: 1.21 $2024-03-29T01:14:53-7:0044.200.196.114searchRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5527Timothy W. Chumley199685218U.S.A.ColoradoDouglasEast-central Colorado: Mosquito Range to Plains: Rampart Range: off Forest Road 507 ca 0.2 rd mi E of intersection with Forest Road 300 or Rampart Range Road, ca 3 air mi SE of Shamballah-Ashramah; ca 8.4 air mi NE of Deckers.-105.082639.294523902576Along a wet drainage in ponderosa pine-Douglas fir forest. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5720Timothy W. Chumley1996810223U.S.A.ColoradoParkEast-central Colorado: Mosquito Range to Plains: Morrison Creek: along the creek and slopes to S rising to Forest Road 550, ca 3 air mi SW of town of Buffalo Creek.-105.306239.352421822439On granitic-gravelly uplands in recently burned ponderosa pine forest. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5772Timothy W. Chumley1996810223U.S.A.ColoradoTellerEast-central Colorado: Mosquito Range to Plains: Rampart Range: off Forest Road 360 or Cedar Mountain Road ca 0.7 air mi E of U.S.FS Big Turkey Campground, ca 3 air mi SW of Westcreek.-105.211839.121525362585Dry, granitic-gravelly soils with occasional rock outcrops in ponderosa pine-Douglas fir forest. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5851Timothy W. Chumley1996811224U.S.A.ColoradoDouglasEast-central Colorado: Mosquito Range to Plains: Rampart Range: Turkey Creek: along the creek-105.250339.135222922439Open, grassy areas adjacent to stream. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5934Timothy W. Chumley1996811224U.S.A.ColoradoParkEast-central Colorado: Mosquito Range to Plains: Tarryall Mountains: Platte Springs: off Forest Road 294 at intersection with Forest Road 210 to bluffs above the South Platte River, ca 5.2 air mi N of the town of Lake George.-105.3639.07825302756In ponderosa pine grassland with occasional aspen groves. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6171Timothy W. Chumley1996818231U.S.A.ColoradoParkEast-central Colorado: Mosquito Range to Plains: South Park: Trout Creek Pass: Antero State Wildlife Area: on slopes and ridges N of pass and W of old Colorado Midland railroad grade, ca 1 air mi SW of Antero Junction.-105.967538.920128233024In a broad, moist wetland surrounding a small running stream, with large, dense Salix thickets. Phenology: flowering.RMRM653827 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.58692Ronald L. Hartman Jim Fowler1997726207U.S.A.WyomingParkNorthern Absaroka Area: east side of Sheep Mountain, ca 8 air mi SW of top of Cedar Mountain.-109.305144.421117371829Eroded shales and sandstones with wet spots. Phenology: flowering.RMRM653828 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.59439Ronald L. Hartman1997811223U.S.A.WyomingParkNorthern Absaroka Area: Bobcat Creek Trail.-109.503244.287818901951Sagebrush slope and streamside. Phenology: flowering.RMRM653829 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.59612Ronald L. Hartman1997813225U.S.A.WyomingParkNorthern Absaroka Area: road on south side of the North Fork Shoshone River, ca 5 air mi E of Wapiti.-109.365644.4791707River margins and irrigation ditch and riparian area. Phenology: flowering.RMRM653830 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.59773Ronald L. Hartman1997815227U.S.A.WyomingParkNorthern Absaroka Area: ca 3 air mi SE of Cedar Mountain summit.-109.123644.46451707Clay badlands. Phenology: flowering.RMRM653831 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.59994Ronald L. Hartman1997816228U.S.A.WyomingParkNorthern Absaroka Area: Legg Creek area along the South Fork Shoshone River, South Fork Road, ca 1.8 air mi SW of Hunter Creek Road turnoff.-109.583744.186319512012Along stream and alluvial fan and disturbed areas. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57298B. E. Nelson2002711192U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: ridge between Rough Draw and Sage Creek, SE of Popham Bench Mark, ca 22 air mi SW of Upton; ca 38 air mi W of Newcastle.-104.892343.851713841420Bottom of large wash. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57322B. E. Nelson2002711192U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Forest Road 924 at Lodgepole Creek, ca 33 air mi W of Newcastle; ca 24 air mi SW of Upton.-104.870443.79921332Flats above the stream channel. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57352B. E. Nelson2002711192U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: along Spring Creek and vicinity off Forest Road 914, ca 3.5 air mi E of Upton.-104.550444.090212951310Bottom along the stream. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.58040B. E. Nelson2002815227U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: along Little Thunder Creek ca 1 mi below Little Thunder Reservoir, ca 8 air mi SE of Wright; ca 43 air mi S of Gillette.-105.349243.685914481463Bench and low meadow areas along the stream. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.58154B. E. Nelson2002816228U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: along Antelope Creek at Phillips or Forest Road 973, ca 17 air mi N of Bill; ca 51 air mi N of Douglas.-105.170543.47061359Sand flats in the stream bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1022Peter J. Ebertowski200273184U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: tributary of Mule Creek, 6.5 mi SE of Mule Creek Junction on U.S. Hwy 18, ca 36 air mi S of Newcastle; ca 42 air mi NNE of Lusk.-104.130743.319312191250Gently sloping grassland, soils somewhat clayey. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1170Peter J. Ebertowski200275186U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: broad gully SE of Cheyenne River on Clareton or County Road 7A, ca 37 air mi SE of Wright; ca 44 air mi SW of Newcastle.-104.910343.487613041341Broad grassy gully. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1488Peter J. Ebertowski2002710191U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Black Thunder Creek on Keeline or Forest Road 930, ca 20 air mi E of Wright; ca 43 air mi SSE of Gillette.-105.089943.742613591365Sagebrush. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1547Peter J. Ebertowski2002711192U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Phillips Creek near bentonite mine, on dirt road ca 2 mi W of County Road 31, ca 23 air mi NNE of Glenrock; ca 34 air mi NNW of Douglas.-105.747643.178216091621Creek bed. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1584Peter J. Ebertowski2002711192U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Cheyenne River Draw on County Road 31, ca 27 air mi NNE of Glenrock; ca 36 air mi NNW of Douglas.-105.688243.22115671579Creek bed. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1616Peter J. Ebertowski2002711192U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: side of road along Sand Creek on County Road 31, ca 36 air mi N of Glenrock; ca 32 air mi SSW of Wright.-105.767343.363615701579Roadside in sagebrush/grassland. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1655Peter J. Ebertowski2002713194U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: tributary of Cow Creek, on Cow Creek or County Road 3, ca 18 air mi NNW of Lance Creek; ca 27 air mi WSW of Mule Creek Junction.-104.722443.283312861323Grassy creek bed. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1663Peter J. Ebertowski2002713194U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: Lance Creek on County Road 13, ca 16.5 air mi NNE of Lance Creek; ca 45 air mi SSW of Newcastle.-104.582743.262512071213Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1746Peter J. Ebertowski2002715196U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: tributary of South Deer Creek on County Road 68, ca 12.5 air mi N of Moorcroft; ca 29 air mi ENE of Gillette.-104.973444.449813261341Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1771Peter J. Ebertowski2002715196U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: Brosa Draw on County Road 116, ca 22 air mi N of Moorcroft; ca 36 air mi ENE of Gillette.-104.905644.58312431274Creek bed. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1895Peter J. Ebertowski2002717198U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: spring and head of Holmes Creek on Payne or Forest Road 934, ca 18 air mi SE of Wright; ca 26 air mi N of Bill.-105.229543.600914631496Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1907Peter J. Ebertowski2002717198U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Gibson Draw on Forest Road 973, ca 25 air mi SE of Wright; ca 18.5 air mi NNE of Bill.-105.169743.487613681384Bank along reservoir. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1927Peter J. Ebertowski2002719200U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Skull Creek, ca 0.6 mi N of Wyo Hwy 450 on gravel road, ca 5 air mi WSW of Newcastle; ca 25 air mi SE of Upton.-104.311943.813412251231Side of road above creek. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1967Peter J. Ebertowski2002720201U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: above and N of South Fork Reservoir on County Road 23, ca 20 air mi N of Glenrock; ca 36 air mi NW of Douglas.-105.846543.149616761689Roadside in sagebrush/grassland. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1993Peter J. Ebertowski2002720201U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: tributary of Dry Creek on Dull Center or County Road 38, ca 3 mi E of Bill; ca 35 air mi NNE of Douglas.-105.190543.24081426Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2022Peter J. Ebertowski2002722203U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: hills above and NW of Walker Creek on County Road 43, ca 31 air mi NE of Douglas; ca 17 air mi WNW of Lance Creek.-104.986943.0813841439Grassy ravine with occasional ponderosa pine. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2054Peter J. Ebertowski2002722203U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Lightning Creek on County Road 43, ca 34 air mi NE of Douglas; ca 17 air mi ESE of Bill.-104.970843.140313321341Along creek. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2067Peter J. Ebertowski2002722203U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: tributary of Little Cow Creek on Cow Creek Road, ca 41 air mi NE of Douglas; ca 18.5 air mi E of Bill.-104.891243.239213621365Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2121Peter J. Ebertowski2002724205U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Lodgepole Creek on Wyo Hwy 116, ca 30 air mi W of Newcastle; ca 17 air mi SSW of Upton.-104.791743.879713041310Roadside adjacent to sagebrush/grassland.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2160Peter J. Ebertowski2002724205U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Turner Creek on Forest Road 914, ca 11.5 air mi ESE of Upton; ca 16 air mi NW of Newcastle.-104.429844.020113201332Creek bank. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2183Peter J. Ebertowski2002724205U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Skull Creek on County Road 14, ca 12 air mi E of Upton; ca 19 air mi NNW of Newcastle.-104.389644.090214321445Roadside adjacent to hayfield. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2221Peter J. Ebertowski2002727208U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: hills N of Little Thunder Creek on Wyo Hwy 450, ca 28 air mi ESE of Wright; ca 42 air mi WSW of Newcastle.-104.970243.657613261338Roadside in sagebrush/grassland. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2237Peter J. Ebertowski2002726207U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Soukup Draw on Hall Road, ca 16 air mi NNW of Gillette; ca 17 air mi SSE of Recluse.-105.601244.510212561262Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2309Peter J. Ebertowski2002727208U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Piney Creek on Piney Creek or County Road 17, ca 24 air mi ESE of Wright; ca 27 air mi NNE of Bill.-105.069943.586814201445Creek bed. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2361Peter J. Ebertowski2002729210U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Cheyenne River on Dull Center or County Road 7A, ca 34 air mi ESE of Wright; ca 26 air mi NE of Bill.-104.910343.501812561283Streambank. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2393Peter J. Ebertowski2002731212U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Robbers Roost Creek on Morrisey Road, ca 23 air mi S of Newcastle; ca 9.5 air mi N of Mule Creek Junction.-104.252143.51611461152Rocky wall of reservoir. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2461Peter J. Ebertowski2002731212U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: West Plum Creek on Plum Creek Road, ca 6.5 air mi NW of Newcastle; ca 21 air mi SE of Upton.-104.28943.935913531365Roadside along creek floodplain. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2551Peter J. Ebertowski200282214U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Wild Horse Creek on York or Forest Road 900, ca 27 air mi NNE of Gillette; ca 24 air mi N of Rozet.-105.217844.629212071234Creek bank and floodplain. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2573Peter J. Ebertowski200284216U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: South Branch Beaver Creek on Wyo Hwy 116, ca 6.5 air mi SW of Upton; ca 19 mi SE of Moorcroft.-104.731444.034113291335Roadside in sagebrush/grassland. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2597Peter J. Ebertowski200284216U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: Belle Fourche River off County Road 103, ca 6.5 air mi SW of Moorcroft; ca 25 air mi ESE of Gillette.-105.034244.193212801286Roadside along river. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2639Peter J. Ebertowski200285217U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Stinking Water Creek on County Road 31, ca 34 air mi SSW of Wright; ca 42 air mi NNW of Douglas.-105.727843.306515821597Grassy creek bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2712Peter J. Ebertowski200287219U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Lodgepole Creek on Wyo Hwy 116, ca 30 air mi W of Newcastle; ca 17 air mi SSW of Upton.-104.790743.785113011314Creek bed. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2723Peter J. Ebertowski2002811223U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Wyo Hwy 450, N of Little Thunder Creek, ca 25 air mi ESE of Wright; ca 3 air mi E of Campbell County.-105.0343.657613381344Roadside in sagebrush/grassland. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2782Peter J. Ebertowski2002811223U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Kellog Reservoir on Forest Road 914, ca 9.5 air mi ESE of Upton; ca 18 air mi NW of Newcastle.-104.4744.048113011314Spartina-dominant creek bed with patches of Typha. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2814Peter J. Ebertowski2002811223U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Skull Creek on U.S. Hwy 16, ca 8 air mi NW of Newcastle; ca 18.5 air mi SE of Upton.-104.349443.921812711277Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2923Peter J. Ebertowski B. E. Nelson2002814226U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Cheyenne River ca 0.5 mi E and downstream of Meadow Creek, ca 19 air mi NE of Bill; ca 33 air mi SE of Wright.-105.010743.427513041329Stream bank. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2963Peter J. Ebertowski2002815227U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: along Lodgepole Creek immediately below its confluence with Hay Creek, on Wyo Hwy 450, ca 24 air mi WSW of Newcastle; ca 27 air mi S of Upton.-104.67143.700112651280Low bank of creek. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2990Peter J. Ebertowski2002815227U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Pine Creek on Wyo Hwy 116, ca 0.9 mi NE of Upton; ca 20 air mi SE of Moorcroft.-104.610844.11831310Fenceline along ditch and creek. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3034Peter J. Ebertowski2002816228U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: North Fork Lone Tree Creek on Grieves or County Road 5, ca 19 air mi WSW of Newcastle; ca 24 air mi S of Upton.-104.551343.742612621268Creek bank. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3051Peter J. Ebertowski2002816228U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Beaver Creek at lower end of Sixmile Basin on dirt road ca 0.7 air mi N of Wyo Hwy 450, ca 8.5 air mi WSW of Newcastle; ca 23 air mi SSE of Upton.-104.391743.79921189Creek bank with willow and grasses. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3142Peter J. Ebertowski2002818230U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: playa and grassland ca 1.5 air mi N of North Prong Little Thunder Creek on County Road 89, ca 8 air mi E of Wright; ca 38 air mi SSE of Gillette.-105.329243.742614391448Depressions above playa. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3215Peter J. Ebertowski2002818230U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: creek between Donkey and Buck creeks and ca 1.5 air mi W of their confluence, at the junction of Bishop Road and U.S. Hwy 14-16, ca 1.5 air mi E of Rozet; ca 11 air mi W of Moorcroft.-105.175944.28381298Creek bank. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3421Peter J. Ebertowski2002824236U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: scoria-topped hills N of Dugout Creek on Forest Road 942, ca 12 air mi N of Bill; ca 28 air mi SE of Wright.-105.350243.398814751500Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3744Peter J. Ebertowski200292245U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: along Buzzard Creek on Keeline or Forest Road 930, ca 22 air mi ESE of Wright; ca 45 air mi SSE of Gillette.-105.069943.700114081420Grassy ravine. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.746Peter J. Ebertowski2002628179U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: above and S of reservoir in gully leading to Robbers Roost Creek, on Cheyenne River or County Road 54, ca 24 air mi SSW of Newcastle; ca 44 air mi SSE of Upton.-104.311943.51612131237Grassland with sandstone outcrops. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6139Peter J. Ebertowski200375186U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Cow Creek Buttes along and including Owl Creek, on four wheel drive road off Forest Road 958, ca 15 air mi E of Bill; ca 39 air mi NNE of Douglas.-104.950843.240813711463Creek bed. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6240Peter J. Ebertowski200377188U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: hills E of and draining to East Iron Creek, on four wheel drive road, ca 8 air mi ENE of Upton; ca 23 air mi NW of Newcastle.-104.490144.118313591408Just upland of reservoir shoreline. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6309Peter J. Ebertowski200379190U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Blacktail Creek on U.S. Hwy 85, ca 9.5 air mi S of Newcastle; ca 23 air mi N of Mule Creek Junction.-104.192343.700111891204Tributary of creek, Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6562Peter J. Ebertowski2003711192U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Well Creek, on Stewart Road, ca 10 air mi WNW of Moorcroft; ca 18 air mi E of Gillette.-105.155744.31413041317Upland area around well and pond. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6674Peter J. Ebertowski2003713194U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: tributary W of South Beaver Creek, on Upton-Fairview or County Road 59, ca 20 air mi W of Newcastle; ca 19 air mi S of Upton.-104.631143.813413041341Grassy ravine near confluence with creek. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6784Peter J. Ebertowski2003715196U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: artesian well and creek E of Dugout Creek, ca 1 mi N of its confluence with Dry Fork Cheyenne River, on two-track road, ca 31 air mi SSE of Wright; ca 41 air mi N of Douglas.-105.290343.355714021414Area around well. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6865Peter J. Ebertowski2003718199U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: Lance Creek, 0.5 mi S of confluence with Greasewood Creek on Greasewood or County Road 10, ca 37 air mi N of Lusk; ca 39 air mi SSW of Newcastle.-104.373343.29531155Roadside on floodplain with open canopy of cottonwoods. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7087Peter J. Ebertowski2003723204U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: draw running E off Artesian Draw, on Wyo Hwy 387, ca 26 air mi SW of Wright; ca 21 air mi NE of Midwest.-105.927643.572615911634Small chokecherry thicket in narrow ravine. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7139Peter J. Ebertowski2003725206U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Fiddler Creek, on County Road 36B, ca 13 air mi S of Upton; ca 19 air mi W of Newcastle.-104.570543.921812561271Creek bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7235Peter J. Ebertowski2003727208U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: tributary of Dry Fork Spring Creek, on York or Forest Road 900, ca 30 air mi NE of Gillette; ca 31 air mi NW of Moorcroft.-105.217844.673311951250Gently sloping ravine with silver sagebrush. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7313Peter J. Ebertowski2003727208U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: ridge E of Short Creek, on road continuing Forest Road 1246, ca 34 air mi NW of Moorcroft; ca 24 air mi N of Gillette.-105.444.629212431371Slopes of exposed clayey soils. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7345Peter J. Ebertowski2003729210U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: grassland N of Little Thunder Creek, on Wyo Hwy 450, ca 28 air mi ESE of Wright; ca 39 air mi WSW of Newcastle.-104.970243.657613291341Grassy ravine in sagebrush grassland. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7406Peter J. Ebertowski2003729210U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Turner Creek, on Forest Road 914, ca 16 air mi NW of Newcastle; ca 12 air mi ESE of Upton.-104.409744.034113351384Creek bank, redtop and prairie cordgrass abundant. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7446Peter J. Ebertowski2003731212U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Woody Creek, on two-track off Forest Road 944, ca 29 air mi SE of Wright; ca 11 air mi N of Bill.-105.230443.384413841402Creek bank. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7667Peter J. Ebertowski200384216U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: upper (northern) part of Fields Draw, on Wyo Hwy 450, ca 32 air mi WSW of Newcastle; ca 33 air mi E of Wright.-104.850543.685913171353Ravine floor, with scattered big sagebrush. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7700Peter J. Ebertowski200384216U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Buffalo Creek, on Watt Road, ca 8 air mi SSE of Moorcroft ca 14 air mi ENE of Upton.-105.03344.132413171353Grassy gully with occasional silver sagebrush. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7822Peter J. Ebertowski200387219U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Little Thunder Creek, on Wyo Hwy 450, ca 18 air mi ESE of Wright; ca 48 air mi WSW of Newcastle.-105.149743.671813781384Creek bank. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8002Peter J. Ebertowski2003811223U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Browner Draw, on two-track off Steinle or County Road 40, ca 34 air mi SSE of Wright; ca 42 air mi NNE of Douglas.-105.150543.341313991423Creek bank. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8094Peter J. Ebertowski2003813225U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: West Fork Cottonwood Creek, on Avon Road, ca 15 air mi ENE of Gillette; ca 6 air mi N of Rozet.-105.216444.359212561286Creek bank. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8113Peter J. Ebertowski2003813225U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: hills and ravines ca 0.5 mi E of Soda Well, on Forest Road 1247, ca 31 air mi NNE of Gillette; ca 33 air mi NNW of Moorcroft.-105.258344.68812011231Reservoir shoreline. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8246Peter J. Ebertowski2003815227U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: Antelope Creek, on two-track off Forest Road 973, ca 25 air mi SE of Wright; ca 54 air mi SW of Newcastle.-105.190543.470613471359Stream bank. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8295Peter J. Ebertowski2003817229U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Black Thunder Creek, on Cheyenne River or County Road 54, ca 31 air mi SW of Newcastle; ca 40 air mi ESE of Wright.-104.730843.57261250Creek bank. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8305Peter J. Ebertowski2003817229U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Beaver Creek, ca 0.3 mi N of its confluence with South Beaver Creek, off U.S. Hwy 85, ca 16 air mi S of Newcastle; ca 16 air mi N of Mule Creek Junction.-104.192343.615111401161Creek bank. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8341Peter J. Ebertowski2003819231U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: ridge E of Lone Tree Creek, on Raven Creek or County Road 18, ca 34 air mi W of Newcastle; ca 25 air mi S of Moorcroft.-104.912443.907814081451Grassy ravine floor with silver sagebrush. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8421Peter J. Ebertowski2003819231U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: Little Missouri River, on County Road 200, ca 32 air mi N of Moorcroft; ca 35 air mi NW of Sundance.-104.925744.72431173Steeply sloped river bank. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8579Peter J. Ebertowski2003824236U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Deep Creek, on Elliott or County Road 8, ca 21 air mi W of Newcastle; ca 22 air mi S of Upton.-104.65143.770912921298Creek bank. Phenology: fruiting.RMRM913490 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.40884Erwin F. Evert2004618170U.S.A.WyomingBig HornBighorn Basin: ca 0.5 mi E of Dry Creek Road 5 mi E of Wyo Hwy 32, 20 mi WNW of Greybull.1390Vernally moist swale in sagebrush - saltbush steppe with Typha latifolia, Tamarix chinensis, and Rorippa calycina.RMRM726253 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11378Erwin F. Evert1986823235U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: ca 1 mi E of entrance to Yellowstone National Park, just N of U.S. Hwy 14, 16, and 20.-109.986544.490820882103Disturbed forest of lodgepole pine and Douglas fir.RMRM726373 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11504Erwin F. Evert1986826238U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: canyon just W of The Palisades, ca 1/8-1/4 mi N of U.S. Hwy 14, 16, and 20.-109.76544.461819201951Along stream in canyon bottom.RMRM726411 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11545Erwin F. Evert1986826238U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: immediately N of U.S. Hwy 14, 16, and 20, ca 0.5 mi W of the mouth of Libby Creek.-109.825444.50531978In wet area along highway.RMRM726580 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11716Erwin F. Evert1986829241U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along north side of North Fork Shoshone River, ca 1/8 mi W of Newton Creek Campground.-109.76544.44731890Disturbed riparian community along river.RMRM732491 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.13431Erwin F. Evert1987728209U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: along the south side of North Fork Shoshone River, ca 1/4-1/2 mi E of Blackwater Creek.-109.744944.46181887Riparian community. Phenology: flowering & fruiting.RMRM732862 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.13936Erwin F. Evert1987818230U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: near the head of Fishhawk Creek, 1 mi NE of Chaos Mountain, ca 12 mi S of U.S. Hwy 14, 16, and 20.-109.885844.28782682In avalanche shute dominated by Heracleum sphondylium, Abies lasiocarpa and Arnica longifolia. Phenology: flowering.RMRM621507 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.20065Erwin F. Evert199085217U.S.A.MontanaParkAbsaroka-Beartooth Mountains: Gallatin National Forest: along West Fork Mill Creek, ca 21 mi NNE of Gardiner.-110.565745.29961798Moist spruce forest and riparian edge with Equisetum arvense, Carex deweyana and Linnaea borealis. Phenology: flowering.RMRM739504 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.21117Erwin F. Evert1991627178U.S.A.MontanaStillwater[location and coordinates withheld]1158Riparian area with Populus balsamifera, Toxicodendron rydbergii, and Cornus stolonifera. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.21679Erwin F. Evert199179190U.S.A.MontanaParkYellowstone Valley: south shore of Dailey Lake, ca 15 mi N of Gardiner.-110.807445.25561597Lakeshore with Distichlis stricta, Festuca arundinacea, Spartina gracilis, and Scirpus nevadensis.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.21775Erwin F. Evert1991718199U.S.A.MontanaSweet Grass[location and coordinates withheld]1280Weedy riparian area with Populus balsamifera, Salix lasiandra, Agrostis stolonifera, and Betula occidentalis.RM779609 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.24520Erwin F. Evert1992811224U.S.A.IdahoFremontMadison Range: Henrys Lake Mountains: Targhee National Forest: ca 1 mi W of Howard Spring; ca 10 mi W of West Yellowstone, MT.-111.306344.67122103Opening in Dougals fir forest with Perideridia gairdneri, Cirsium arvense, and Phleum pratense.RMRM783778 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29721Erwin F. Evert199576187U.S.A.MontanaSweet Grass[location and coordinates withheld]1158Disturbed, weedy riparian area and field with Bromus tectorum, Medicago lupulina, and Poa pratensis. Phenology: buds.RMRM818636 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33234Erwin F. Evert1997622173U.S.A.WyomingHot SpringsOwl Creek Mountains: lower end of the Wind River Canyon, along U.S. Hwy 20/Wyo Hwy 789, 4 mi S of Thermopolis.-108.205843.59081350Weedy, rocky riparian area along the river with Bromus inermis, Asclepias speciosa, and Cirsium arvense. Phenology: buds.RMRM819622 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33692Erwin F. Evert1997710191U.S.A.IdahoFremontSnake River Plains: boating access along the east side of the Henrys Fork River, 2.6 mi W of Ashton.1585Dry disturbed areas and roadways with Bromus japonicus, Purshia tridentata, and Euphorbia esula. Phenology: flowering & fruiting.RMRM818954 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.34220Erwin F. Evert1997729210U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: just W of Portal Creek at Golden Trout Lakes Trailhead, 33 mi SSW of Bozeman.2439Lodgepole pine forest with Carex rossii, Astragalus miser var. hylophilus, and Carex geyeri. Phenology: flowering & fruiting.RMRM819192 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.34481Erwin F. Evert199785217U.S.A.MontanaParkParadise Valley: Grey Owl/Chicory Public Fishing accesses along the west side of the Yellowstone River, 19 mi S of Livingston.1487Disturbed riparian community adjacent to corrals with Bromus tectorum, Melilotus officinalis, Centaurea maculosa, and Populus balsamifera. Phenology: flowering & fruiting.RMRM819950 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.34588Erwin F. Evert199786218U.S.A.MontanaCarbonEast Bridger, along Burlington Northern tracks E of town.1106Disturbed area around grain elevators with Distichlis stricta, Bromus tectorum, and Kochia scoparia. Phenology: flowering & fruiting.RMRM821904 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.37992Erwin F. Evert199987219U.S.A.WyomingParkYellowstone Plateau: Yellowstone National Park: along (new) Pelican Creek Trail, ca 4 mi E of Fishing Bridge.-110.302744.57172408Burned former lodgepole pine with Epilobium angustifolium, Carex rossii, and Arnica cordifolia. Phenology: vegetative only.RMRM795707 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1331Jeanette Flaig2003720201U.S.A.ColoradoArchuletaEastern San Juan Mountains: San Juan National Forest: U.S. Hwy 160 W to County Road 600, N to Forest Road 629, W to Forest Road 923 then S; ca 9 air mi from Pagosa Springs. W center-107.141537.31372423Roadside. Phenology: flowering & fruiting.RMRM795706 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1453Jeanette Flaig2003720201U.S.A.ColoradoArchuletaEastern San Juan Mountains: San Juan National Forest: U.S. Hwy 160 W to Forest Road 37 then-106.960637.35752515Roadside of ponderosa pine, Douglas fir and aspen forest. Phenology: flowering & fruiting.RMRM795705 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2020Jeanette Flaig Kurt Flaig2003730211U.S.A.ColoradoMineralEastern San Juan Mountains: Rio Grande National Forest: SW of Spring Creek Reservoir Picnic Ground, ca 13 air mi SW of Creede.-106.598337.79162774Beaver ponds and roadside. Phenology: flowering & fruiting.RMRM795704 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2619Jeanette Flaig2003814226U.S.A.ColoradoRio GrandeEastern San Juan Mountains: Rio Grande National Forest: U.S. Hwy 160 W from Del Norte to County Road 19.-106.591437.67782500Along highway. Phenology: flowering & fruiting.RMRM795703 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2774Jeanette Flaig2003816228U.S.A.ColoradoArchuletaEastern San Juan Mountains: San Juan National Forest: U.S. Hwy 160 W to Forest Road 620 then ca 6 road mi NNW; ca 23 air mi W of Pagosa Springs.-107.410437.28932625White fir and pine forest. Phenology: flowering & fruiting.RMRM795702 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2885Jeanette Flaig2003819231U.S.A.ColoradoArchuletaEastern San Juan Mountains: San Juan National Forest: Coal Creek Trailhead: U.S. Hwy 160 W to Fawn Gulch Road; ca 6 air mi E of Pagosa Springs.-106.87537.323426022661Douglas fir, ponderosa pine and aspen forest with Quercus understory. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.62454B. E. Nelson2004813226U.S.A.ColoradoArchuletaEastern San Juan Mountains: along the Little Navajo River at Trail 577 crossing and vicinity, ca 2 air mi NW of Navajo Peak, ca 17 air mi SE of Pagosa Springs.-106.769537.107327282759Slopes and meadows with snowberry. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.62511B. E. Nelson2004815228U.S.A.ColoradoArchuletaEastern San Juan Mountains: Opal Lake Trailhead and along Opal Lake Trail 564, between Rio Blanco and Flattop Mountain, ca 14.5-15 air mi ESE of Pagosa Springs.-106.762437.203426582804Stony meadow adjacent to the parking area, with patches of willows, cottonwood, and scattered white fir and blue spruce. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.62599B. E. Nelson2004815228U.S.A.ColoradoArchuletaEastern San Juan Mountains: Opal Lake and vicinity, ca 1.5 air mi SW of Flattop Mountain, ca 15 air mi ESE of Pagosa Springs.-106.749737.195528042817Moist to marshy meadow along the lake. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.62638B. E. Nelson2004815228U.S.A.ColoradoArchuletaEastern San Juan Mountains: northeast end of Mesa Cortado, S of U.S. Hwy 84, ca 17.5-18 air mi SE of Pagosa Springs.-106.850537.072723782530Aspen meadow at the head of a drainage. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.62879B. E. Nelson2004818231U.S.A.ColoradoArchuletaEastern San Juan Mountains: along Forest Road 537 at and just below junction with Forest Road 756 along a tributary of Spring Creek, ca 10 air mi NE of Ignacio; ca 7 air mi ESE of Bayfield.-107.477537.191225762637Old stock pond and surrounding area. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.63091B. E. Nelson2004822235U.S.A.ColoradoConejosEastern San Juan Mountains: Osier Park at the head of Toltec Creek and Massey Gulch, ca 1 mi E of Osier Mountain, ca 6.5 air mi SW of Fox Creek; ca 16 air mi WSW of Antonito.-106.305337.025430643079Moist to dry meadows with patches of Potentilla fruticosa and Veratrum. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5465Jeanette Flaig200476188U.S.A.ColoradoRio GrandeEastern San Juan Mountains: Rock Creek Park, Bishop Rock, Forest Road 28, 16 air mi SSE of Del Norte.-106.283337.4922620Roadside and ephemeral drainage. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6236Jeanette Flaig2004718200U.S.A.ColoradoSaguache[location and coordinates withheld]2324Irrigation canal. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7449Jeanette Flaig200488221U.S.A.ColoradoHinsdaleEastern San Juan Mountains: San Juan National Forest: Weminuche Wilderness: Pine Creek Trail, Los Pinos River.-107.458437.46972456Open mesic meadow and standing pond side. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7553Jeanette Flaig200489222U.S.A.ColoradoMineralEastern San Juan Mountains: San Juan National Forest: Windy Pass Trail just S of Treasure Falls pullout, U.S. Hwy 160, ca 17 air mi NNE of Pagosa Springs.-106.881337.438725182686Very mesic mixed conifer forest on a west-facing slope. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3701Erin Foley B. E. Nelson2003728209U.S.A.ColoradoClear CreekArapaho National Forest: Front Range: ca 0.5 mi NW of Empire on secondary Forest Road 261; ca 8.5 air mi SW of Winter Park.-105.688839.77092865Mixed coniferous forest and roadside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3718Erin Foley B. E. Nelson2003728209U.S.A.ColoradoClear CreekArapaho National Forest: Front Range: ca 0.5 mi NW of Empire on secondary Forest Road 261; ca 8.5 air mi SW of Winter Park.-105.688839.77092865Mixed coniferous forest and roadside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4853Erin Foley2003813225U.S.A.ColoradoGrandArapaho National Forest: Front Range: Shadow Mountain Lake: Green Ridge Forest Service Work Station, ca 2.5 air mi SW of Grand Lake.-105.857440.21412560Open disturbed areas and lakeside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5243Erin Foley2003816228U.S.A.ColoradoGrandArapaho National Forest: Rabbit Ears Range: Buffalo Creek, ca 15.5 air mi NW of Granby; ca 15 air mi NE of Parshall.-106.114140.2622707Along small intermittent stream adjacent to sagebrush slope. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5258Erin Foley2003818230U.S.A.ColoradoParkArapaho National Forest: Front Range: just S of Brook Forest where Clear Creek, Jefferson, and Park County lines meet, ca 6 air mi NW of Conifer. /4-105.402139.56322743Regenerating lodgepole pine meadow. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5374Erin Foley2003818230U.S.A.ColoradoClear CreekArapaho National Forest: Front Range: Mount Evans Wilderness Trail: Lost Creek, ca 9.5 air mi S of Idaho Springs.-105.521939.603326822768Along creek. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5619Erin Foley2003826238U.S.A.ColoradoGrandArapaho National Forest: Rabbit Ears Range: North Fork Cabin Creek along Cabin Creek Road, ca 3 mi W of Colo Hwy 125, ca 9 air mi N of Hot Sulphur Springs.-106.091240.20212591Along creek and roadside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10131Erin Foley2004716198U.S.A.ColoradoGrandMiddle Park: Wolford Mountain Dam on Muddy Creek, ca 4 air mi NNW of Kremmling, and ca 1 mi W of Wolford Mountain.-106.419640.111922562304Disturbed rocky area. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10713Erin Foley200482215U.S.A.ColoradoGrandMiddle Park: just W of Williams Fork Reservoir on Big Lake Ditch, ca 4 air mi SW of Parshall and ca 9 air mi ESE of Kremmling.-106.235440.01522408Along irrigation ditch. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11093Erin Foley200487220U.S.A.ColoradoGrandGore Range: Pump House Recreation Area: ca 8.5 air mi SW of Kremmling and ca 3 air mi ENE of Radium.-106.50539.978521342213Well-drained disturbed slope. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11153Erin Foley200487220U.S.A.ColoradoGrandMiddle Park: Corral Creek, ca 11 air mi E of Kremmling and ca 4 air mi W of Hot Sulphur Springs.-106.193640.068322832378Dry sagebrush slope and drainage. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11411Erin Foley2004810223U.S.A.ColoradoGrandRabbit Ears Range: Lindsey Creek to Grannys Nightcap, ca 18.5 air mi NNW of Kremmling and ca 23 air mi SE of Steamboat Springs.-106.443440.325226582871Along creek. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11562Erin Foley2004814227U.S.A.ColoradoGrandMiddle Park: Muddy Creek, ca 1 air mi NE of Kremmling and ca 2.5 air mi SE of Wolford Mountain.-106.370140.07492256Along creek. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11762Erin Foley2004818231U.S.A.ColoradoGrandMiddle Park: Hot Sulphur Springs State Wildlife Area: Colorado River Fishing Access from parking area to River, ca 1.5 air mi WNW of Parshall and ca 10 air mi E of Kremmling.-106.207440.0622286Disturbed area adjacent to parking lot through sagebrush. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11796Erin Foley2004818231U.S.A.ColoradoGrandMiddle Park: S of Colorado River, ca 1.5 air mi W of Parshall and ca 10.5 air mi E of Kremmling.-106.205240.052222862463Along fork. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11926Erin Foley2004820233U.S.A.ColoradoGrandMiddle Park: Pass Creek just N of Colo Hwy 134, ca 3 air mi NW of Wolford Mountain and ca 6.5 air mi NW of Kremmling.-106.439940.14682317Along creek. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.12252Erin Foley2004827240U.S.A.ColoradoGrandMiddle Park: Wolford Mountain Reservoir, ca 7.5 air mi NNW of Kremmling and ca 3.5 air mi NW of Wolford Mountain.-106.41540.16732286Sedimentary slopes and drainages adjacent to reservoir. Phenology: flowering & fruiting.RMRM650694 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1894Laura Welp199479190U.S.A.WyomingSweetwaterGreat Divide Basin Area: Great Divide Basin: Steamboat Mountain, ca 6.5 air mi WNW of Greasewood Wash; ca 13.5 air mi N of Superior.-108.96194441.9827782408Small open spring on north-facing slope, recently burned over; sagebrush and lupine dominant colonizers; moist soil. Phenology: flowering.RMRM650693 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2075Laura Welp1994712193U.S.A.WyomingFremont[location and coordinates withheld]1798Open stream bank at edge of dense thickets; moist, dark soil. Phenology: flowering.RMRM650692 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2488Laura Welp1994719200U.S.A.WyomingFremontGreat Divide Basin Area: Green Mountain: drainage and associated slopes and beaver ponds ca 4 air mi W of Whiskey Peak; ca 12.5 air mi NE of Bare Ring Butte.-107.626942.32582408Open graminoid meadow around beaver dam. Phenology: flowering & fruiting.RMRM650691 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2648Laura Welp1994720201U.S.A.WyomingFremont[location and coordinates withheld]20302073Side and banks of stream; shaded Salix overstory, grazed understory with scattered birch; wet, gravelly organic soil. Phenology: flowering.RMRM650690 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2910Laura Welp1994725206U.S.A.WyomingFremontGreat Divide Basin Area: Crooks Mountain: O'Brien Creek and adjacent slopes ca 4 air mi NW of Crooks Peak; ca 7 air mi SW of Jeffrey City.-107.919242.428120912158Open gentle slope near creek; dense sagebrush dominant; dry gravel soil. Phenology: flowering.RMRM650689 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3064Laura Welp1994730211U.S.A.WyomingCarbonGreat Divide Basin Area: Great Divide Basin: Snowshoe Canyon on Atlantic Rim, ca 5 air mi SW of Bridger Pass; ca 19 air mi SE of Creston Junction.-107.49916741.50833322252256Moist drainage at base of canyon; dense tall graminoids, scattered Salix thickets; some burned areas. Phenology: flowering.RMRM650688 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3105Laura Welp1994730211U.S.A.WyomingCarbonGreat Divide Basin Area: Great Divide Basin: Jepp Canyon, ca 4.5 air mi W of Bridger Pass; ca 16.5 air mi SE of Creston Junction.-107.49916741.5591672195Small creek cutting through low sagebrush hills at base of canyon; wet sandy soil. Phenology: flowering.RMRM650687 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3295Laura Welp199488220U.S.A.WyomingCarbon[location and coordinates withheld]21702274Open spring on south-facing slope; grazed graminoids, scattered pine and aspen dominant; dry fine soil. Phenology: flowering.RMRM651255 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3339Laura Welp199488220U.S.A.WyomingCarbonGreat Divide Basin Area: Great Divide Basin: Little Camp Creek, ca 3 air mi NE of Bairoil; ca 5 air mi SE of Whiskey Peak.-107.506942.253320672085Small dammed creek on north-facing slope in sagebrush hills; graminoids dominant; dry fine rocky soil. Phenology: flowering.RMRM650686 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3357Laura Welp1994810222U.S.A.WyomingFremont[location and coordinates withheld]17561859Dry spring at canyon bottom; dense graminoids dominant; dry organic soil Phenology: flowering & fruiting.RMRM650685 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3379Laura Welp1994810222U.S.A.WyomingFremontGreat Divide Basin Area: Popo Agie River Drainage: Beaver Creek, ca 6.5 air mi E of Dilabaugh Buttes; ca 12.5 air mi W of Sweetwater Station.-108.409442.517819812000Shaded Salix thicket on side of creek in low sagebrush hills. Phenology: flowering & fruiting.RMRM650684 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3411Laura Welp1994811223U.S.A.WyomingFremontGreat Divide Basin Area: Sweetwater River Drainage: lower Pine Creek, ca 8 air mi S of Atlantic City; ca 9.5 air mi N of Continental Peak.-108.760642.385322562298Side of creek in steep sagebrush hills with uplifted shaley outcrops. Phenology: flowering & fruiting.RMRM650683 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3457Laura Welp1994811223U.S.A.WyomingFremontGreat Divide Basin Area: Sweetwater River Drainage: Sweetwater River, ca 11.5 air mi SW of Atlantic City; ca 11.5 air mi NW of Continental Peak.-108.877242.37032260Dry graminoid meadow between two hills. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3524Laura Welp1994813225U.S.A.WyomingFremont[location and coordinates withheld]1878Berm between river and ditch; Rosa and Salix shrubs dominant; fine sandy soil. Phenology: flowering & fruiting.RMRM650682 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3577Laura Welp1994813225U.S.A.WyomingFremont[location and coordinates withheld]1963Near creek in dry graminoid rolling hills; fine silty soil. Phenology: flowering.RMRM651253 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3624Laura Welp1994815227U.S.A.WyomingFremontGreat Divide Basin Area: Sweetwater River Drainage: Rock Creek, ca 6 air mi W of Radium Springs; ca 8 air mi SE of Atlantic City.-108.603942.35642231Graminoid meadow with scattered Salix. Phenology: flowering.RMRM651254 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3680Laura Welp1994816228U.S.A.WyomingFremontGreat Divide Basin Area: Sweetwater River Drainage: Slate Creek and adjacent slope, ca 2 air mi S of Rock Creek Reservior; ca 2.5 air mi N of Atlantic City.-108.763342.5152481Disturbed roadside. Phenology: flowering.RMRM650326 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6775Laura Welp1995725206U.S.A.WyomingSweetwaterGreat Divide Basin Area: Great Divide Basin: sand dune ca 16 air mi N of Wamsutter; ca 8.5 air mi SE of Circle Bar Lake.-107.879441.9647220762088Disturbed roadside. Phenology: fruiting.RMRM650328 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7351Laura Welp199585217U.S.A.WyomingFremontGreat Divide Basin Area: Popo Agie River Drainage: banks of Beaver Creek, ca 2.5 air mi N of Schoettlin Mountain; ca 4 air mi SE of Weiser Pass.-108.411942.561419202000Moist creekside with dense grasses and scattered sagebrush; rocky sandy soil. Phenology: fruiting.RMRM650327 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7510Laura Welp199588220U.S.A.WyomingFremontGreat Divide Basin Area: Popo Agie River Drainage: Beaver Creek, ca 20 air mi S of Lander; ca 25 air mi W of Sweetwater Station.-108.669742.544223782420Side of stream in moist rocky soil. Phenology: buds.RMRM624670 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.49653Ronald L. Hartman1994819231U.S.A.WyomingTetonGros Ventre Area: southwest end and side of Lower Slide Lake.-110.536643.6342103Shore line and lower wooded slopes. Phenology: flowering & fruiting.RMRM624669 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.49732Ronald L. Hartman1994819231U.S.A.WyomingTetonGros Ventre Area: Alkali Creek from Gros Ventre River Road to river and down stream ca 0.5 air mi.-110.377243.605221952225Stream and river sides. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11607Stuart Markow Heather Marks1998711192U.S.A.WyomingTetonGrand Teton National Park: Teton Science School grounds, 30-40 yds W of Major Laboratory/Murie Museum, 25 air mi N of Jackson, 1/4 mi S of Ditch Creek.2103Sparsely-distributed aspen with Symphoricarpos oreophilus, Rosa woodsii, Bromus carinatus and Geranium viscosissimum.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11739Stuart Markow199887219U.S.A.WyomingTetonGrand Teton National Park: east side of Teton Park Road, ca 2 air mi S of Signal Mountain Campground, ca 23 air mi N of Jackson.2134Sagebrush-steppe dominated by Artemisia tridentata, Poa secunda, Poa pratensis, Bromus carinatus and Elymus spicatus.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9238Donald L. Hazlett Eric Hazlett1995824236U.S.A.WyomingLaramieSoutheastern Plains: along Horse Creek.16001650Riparian. Phenology: fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9393Donald L. Hazlett199599252U.S.A.WyomingLaramieSoutheastern Plains: along Little Horse Creek (Harding property).16501700Riparian. Phenology: flowering & fruiting.RMRM789296 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2769Bonnie Heidel Jeannette Haddock Flaig2005810222U.S.A.WyomingLaramieSoutheastern Plains: F. E. Warren Air Force Base: along Diamond Creek.-104.881241.14422018Meanders in wet meadow. Phenology: flowering & fruiting.RMRM681796 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.541Michael Oliver1991724205U.S.A.WyomingConverseEastern Plains: north bank of the North Platte River, ca 6 air mi W of Orin Junction on I-25; ca 7 air mi S of Douglas.-105.315442.65971445Dense Salix exigua stand on mixed alluvium of first terrace bordering stream; understory of Cirsium arvense, Glycyrrhiza lepidota, and Carex nebrascensis. Phenology: fruiting.RMRM682106 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.200Michele Barlow199186218U.S.A.WyomingNatronaNorth Platte River Valley: east bank of North Platte River, ca 0.1 mi N of confluence of Bates Creek.-106.607842.70041597Salix exigua community with open herbaceous layer of Poa pratensis, Hordeum jubatum, and Cirsium arvense on floodplain of cobbles and alluvium. Phenology: fruiting.RMRM681432 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8488Robert D. Dorn2000810223U.S.A.WyomingCampbellWright.-105.496443.75711524Edge of cattail ditch with Poa and Scirpus. Phenology: flowering & fruiting.RMRM681431 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8489Robert D. Dorn2000810223U.S.A.WyomingJohnsonPowder River at I-90.-106.152744.21461219Roadside ditch with Populus and Elymus. Phenology: buds.RMRM681430 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8491Robert D. Dorn2000912256U.S.A.WyomingSheridanAlong Goose Creek just east of Kendrick Park, Sheridan.1158Moist unstable bank above creek with Populus deltoides and Typha. Phenology: fruiting.RMRM703494 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.615Steve Kettler1991727208U.S.A.WyomingConverseEastern Plains: Wagon Hound Creek at south end of Sheep Mountain, ca 7.5 mi S of Douglas.-105.453142.64521533Dense stand of Carex nebrascensis with occasional Populus angustifolia seedlings along stream on mixed alluvial soil. Phenology: flowering & fruiting.RMRM681931 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.776Steve Kettler1991816228U.S.A.WyomingLaramieSoutheast Plains: North Branch Little Bear Creek, ca 25 air mi N of Cheyenne; ca 6 mi W of I-25.-104.063941.48411984Dense Juncus balticus stand with some Agrostis stolonifera and scattered forbs on terrace slightly above floodplain. Phenology: fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3438Emily A. Holt Brian Elliott200086219U.S.A.ColoradoEagleCentral Colorado: Sawatch Range, West Slope Continental Divide: along East Lake Creek Trail 1880, ca 5 air mi S of Edwards.-106.561239.556325002865Aspen woodland. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4251Emily A. Holt2000821234U.S.A.ColoradoPitkinCentral Colorado: Sawatch Range, West Slope Continental Divide: on New York Creek Trail off County Road 23 from Colo Hwy 82, ca 13 air mi SE of Aspen.-106.67239.092930793475Spruce-fir with open areas. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7618Emily A. Holt200184216U.S.A.ColoradoPitkinCentral Colorado: Sawatch Range, West Slope Continental Divide: along Forest Road 103 just E of end of pavement, ca 4 air mi N of Aspen.-106.832139.25542439Roadside with oak and Symphoricarpos woodlands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7795Emily A. Holt2001811223U.S.A.ColoradoPitkinCentral Colorado: Sawatch Range, West Slope Continental Divide: along Hunter Creek Trail 1992, E of Forest Service sign to second large meadow (ca 1 mi), ca 2 air mi NE of Aspen.-106.75739.299326212743Aspen forest with several open montane meadows. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6265Joy Handley Phillip G. Lawrence2000629181U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: Deer Creek at powerline crossing, ca 5 mi W of Cambridge; ca 20 air mi SW of Council.-116.785844.5639899975Open shrub-grassland, basalt soil; moist meadow/creekside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6792Joy Handley B. E. Nelson2000716198U.S.A.IdahoAdamsPayette National Forest and Vicinity: Weiser River Valley: crossing of Forest Road 206 and Little Weiser River, just below Mill Creek, ca 15 air mi ESE of Cambridge; ca 16.5 air mi S of Council.-116.383644.4902990Roadside riparian area. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7442Joy Handley Erin Peters200081214U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: Burton Lane ditch just S of U.S. Hwy 95, ca 1 air mi SE of Cambridge; ca 16 air mi SW of Council.-116.664444.5639807Weedy roadside irrigation ditch. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7483Joy Handley Erin Peters200081214U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Weiser River Valley: Burton Lane ditch just S of U.S. Hwy 95, ca 1 air mi SE of Cambridge; ca 16 air mi SW of Council.-116.664444.5639807Weedy roadside irrigation ditch. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1711aJoy Handley1999710191U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Hitt Mountains Area: Mann Creek by Forest Road 009 from guard station south ca 0.3 road mi, ca 10.5 air mi WNW of Midvale; ca 14 air mi SSW of Cambridge.-116.947744.505610821097Roadside riparian area; dominated by Populus tricocarpa, Alnus, Philadelphus lewisii, and Pinus ponderosa wildlife tree not collected. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1406Nancy Kastning David Culp198893247U.S.A.ColoradoJacksonSierra Madre/Park Ranges: Park Range: ca 1 air mi E of Delaney Butte by Delaney Lakes.24932500In marshy area by lakes.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.17660B. E. Nelson Steven Nelson198983215U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: Routt National Forest: Along Service Creek ca 0.5-1.5 air mi above the Yampa River, ca 13.5 air mi S of Steamboat Springs.-106.782240.289521342317Meadow.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.17804B. E. Nelson Michelle Nelson198986218U.S.A.ColoradoRoutt[location and coordinates withheld]2317Slope with Symphoricarpos.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.17863B. E. Nelson Michelle Nelson198988220U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: Routt National Forest: In canyon along Rock Creek, ca 16.5 air mi SE of Yampa, ca 4 air mi NNE of McCoy.-106.712239.970721952256Creek banks and low bench.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.18032B. E. Nelson Michelle Nelson198988220U.S.A.ColoradoGrand[location and coordinates withheld]2164Roadside.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.18110B. E. Nelson Michelle Nelson1989810222U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: Routt National Forest: Above Volcano Siding ca 2 air mi SW of Long Park, ca 13.5 air mi SE of Yampa, ca 33 air mi S of Steamboat Springs.-106.724840.009626212682Meadow.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.18326B. E. Nelson Michelle Nelson1989813225U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: Routt National Forest: Along tributary of Muddy Creek ca 5 air mi S of Rabbit Ears Pass, ca 15.5 air mi SE of Steamboat Springs.-106.648340.33372804Roadside.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1406Nancy Kastning198893247U.S.A.ColoradoJacksonSierra Madre\Park Range: Park Range: ca 1 air mi E of Delany Butte by Delany Lakes.-106.457440.705124932500In marshy area by lakes.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4856Neil Snow198983215U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: vicinity of Mad Creek Trail, ca 7 air mi NNW of Steamboat Springs.-106.873240.579121032530Near trail.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5043Neil Snow198984216U.S.A.ColoradoRouttSierra Madre\Park Range: Park Range: along Forest Road 129 at junction of road leading around northwest part of Steamboat Lake.-106.967840.80892439Meadows surrounding small pond.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5622Neil Snow198989221U.S.A.ColoradoRoutt[location and coordinates withheld]2051Ditches along roadside near Holiday Inn and Super 8 Motel.RMRM569624 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1104Nancy Kastning1988813226U.S.A.WyomingCarbonSierra Madre/Park Range: Sierra Madre: Singer Peak.-107.184441.22621Dry open areas in aspen, lodgepole. Phenology: flowering & fruiting.RMRM569622 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.540Nancy Kastning Lee Huston and Joel Kastning1988712194U.S.A.WyomingCarbonSierra Madre/Park Range: Sierra Madre: ca 3 air mi ENE of Battle Mountain, E of Battle Creek.-107.221341.0552179Sage slopes on east side of creek, interspersed with wet areas containing Prunus. Phenology: flowering & fruiting.RMRM569623 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.944Nancy Kastning Lee Huston and Heather Kastning1988728210U.S.A.WyomingCarbonSierra Madre/Park Range: Sierra Madre: ca 9 mi SE of Red Mountain.-106.824941.081726822865Old clear cut in lodgepole pine forest, disturbed. Phenology: flowering & fruiting.RM608095 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2101Thomas Cramer1994720201U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: vicinity of Coal Creek, ca 14 air mi N of Border Junction.-110.91166742.40666720732439Sagebrush hills with aspen groves. Phenology: flowering.RM608094 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3753Thomas Cramer1994814226U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Hams Fork, ca 1 air mi N of Frontier.-110.52861141.8302781835Riverside meadows, sagebrush, and willows. Phenology: flowering.RM608093 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3848Thomas Cramer1994814226U.S.A.WyomingLincoln[location and coordinates withheld]2210Reservoir edge, meadows, and sagebrush. Phenology: flowering.RMRM608092 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3918Thomas Cramer1994815227U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Sublette Range: ca 18 air mi N of Cokeville.-110.931942.329421342195Hillside spring and beaver ponds with adjacent meadows, sagebrush, and lodgepole pine stands. Phenology: flowering.RMRM608091 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3945Thomas Cramer1994815227U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Nugget Canyon, just S of Nugget.-110.818341.825619812073Pondside willows and sagebrush, adjacent sagebrush, and open hillside. Phenology: flowering.RMRM608090 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3981Thomas Cramer1994815227U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Salt Creek, just S of Bridger-Teton National Forest, ca 25 air mi N of Cokeville.-110.977542.441419812073Pondside willows and sagebrush, adjacent sagebrush, and open hillside. Phenology: flowering.RMRM608089 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3987Thomas Cramer1994815227U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Salt Creek, just S of Bridger-Teton National Forest, ca 25 air mi N of Cokeville.-110.977542.441419812073Pondside willows and sagebrush, adjacent sagebrush, and open hillside. Phenology: flowering.RMRM608088 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4560Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Twin Creek, ca 3.5 air mi W of Nugget.-110.895641.80781951Creek edges in ten foot deep creek cut through sagebrush surroundings. Phenology: flowering.RMRM608087 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4644Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: ca 2 air mi E of Leefe.-110.992541.80781914Ditchsides and dry reservoir in surrounding sagebrush. Phenology: flowering.RMRM608086 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4728Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Hams Fork, ca 2.5 air mi S of Kemmerer.-110.528641.75312088Riverside meadows, willows, and sagebrush. Phenology: flowering.RM773287 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10467Kevin J. Taylor1998816228U.S.A.ColoradoDelta[location and coordinates withheld]2591Open meadow, stock pond, and aspen forest along creek. Phenology: flowering & fruiting.RM773286 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10641Kevin J. Taylor1998817229U.S.A.ColoradoGunnison[location and coordinates withheld]2103Along road along creek; cottonwood, willow, and Colorado blue spruce. Phenology: fruiting.RM773288 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8989Kevin J. Taylor John Gutrich1998720201U.S.A.ColoradoGunnison[location and coordinates withheld]2286Along and in ponds of constructed wetlands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.209Gwen Kittel1989719200U.S.A.ColoradoLarimerRiparian Plants of the Cache la Poudre River: ca .5 mi W of Stove Praire Road Junction on Colo Hwy 14.1853Riverbank with Populus angustifolia.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2092Grace M. Kostel2004612164U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 23.5-24 air mi SW of Edgemont at the three state corner of Nebraska, South Dakota and Wyoming in Indian Creek.-104.03583343.989833945In dry creek bottom. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2916Grace M. Kostel2004625177U.S.A.South DakotaCusterBuffalo Gap National Grassland and Vicinity: ca 20 mi SSE of Hermosa, next to the Cheyenne River.-103.05643.567167838In sandy soil on river banks. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2955Grace M. Kostel2004628180U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: ca 5 air mi. N of U.S. Hwy 18 in large side drainage of Moss Agate Creek; left of School Section follow trail across Moss Agate Creek and left up ridge in a SW direction, 0.75 mi from creek bottom.-104.026943.3361975Soils are gravelly, rocky at top of slopes and grade into silt and clay with clay alkali at creek bottom. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3351Grace M. Kostel200476188U.S.A.NebraskaDawesOglala National Grassland and Vicinity: ca 18.5-19 air mi NNW of Crawford and just S of Forest Road 909.-103.45083342.945511731204In Juniper horizontalis draw of rock, gravel and sand. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3413Grace M. Kostel200476188U.S.A.NebraskaDawesOglala National Grassland and Vicinity: ca 15 mi N of Crawford and on Forest Road 919.-103.42566742.90110971128Draw. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3618Grace M. Kostel2004715197U.S.A.NebraskaSiouxOglala National Grassland and Vicinity: ca 18 air mi NW of Crawford and 1/2-3/4 mi N of Orella Road in Whitehead Creek.-103.63383342.89166711281143Soils are silty and moist. Associated plants growing in creek floor are Salix spp., Prunus virginiana and Ribes spp. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3655Grace M. Kostel2004715197U.S.A.NebraskaSiouxOglala National Grassland and Vicinity: ca 20.5-21 air mi NNW of Crawford on Meng Reservoir.-103.56033342.9453331143On and near banks of reservoir. Area is experiencing severe drought conditions. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3887Grace M. Kostel2004716198U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 22 air mi ENE of Hermosa and 1 mi W of Swinehart Hill on Rapid Creek.-102.75666743.920833792On the banks of the creek. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4513Grace M. Kostel200488221U.S.A.NebraskaSiouxOglala National Grassland and Vicinity: ca 22-22.5 air miNW of Crawford and 1.5 mi W of Warbonnet Battlefield Monumen, Antelope Creek.-103.76366742.9158331097In creek. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8366Grace M. Kostel2005710191U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 2 air mi ESE of Cottonwood in Cottonwood Creek.-101.85706743.956767716Soils are silty clay. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8367Grace M. Kostel2005710191U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 4.5 air mi SSE of Cottonwood in Cottonwood Creek.-101.86396743.9033731Soils are silty clay. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8409Grace M. Kostel2005710191U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 4-4.5 air mi SE of Cactus Flats.-101.888543.807883777785Badlands "wall" ridge edge, near a previously altered prairie planted into Agropyron cristatum, soils are silty loam eroding into clay. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8715Grace M. Kostel2005716197U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 14 air mi NE of Hermosa.-102.95383343.933633892In prairie stream drainage cut, soils are clay loam and alkaline. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8911Grace M. Kostel2005720201U.S.A.South DakotaCusterBuffalo Gap National Grassland and Vicinity: ca 19-19.5 air mi E of Fairburn, Battle Creek.-102.81778343.6894800In and along shores of creek, soils are wet clay and clay with gravel sediments. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8980Grace M. Kostel2005720201U.S.A.South DakotaCusterBuffalo Gap National Grassland and Vicinity: ca 1 air mi NW of Redshirt and ca 2 air mi due W of County Road 40, Cheyenne River.-102.91106743.672117815At the shores of river, soils are gravel and sand. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8988Grace M. Kostel2005721202U.S.A.South DakotaCusterBuffalo Gap National Grassland and Vicinity: ca 10.5 air mi SE of Fairburn.-103.036643.60105839Soils are sand overlain with gravel sediments. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9078Grace M. Kostel2005722203U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 2 air mi NE of Cactus Flats in Big Buffalo Creek.-101.8696543.85625750Wooded draw exclosed from grazing, soils are loam and loamy clay. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9224Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 3.5 air mi NW of Cactus Flats.-101.95528343.85305792In reservoir at the head of an ephemeral creek, soils are clay loam. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9237Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 2.5-3 air mi SW of Cactus Flats.-101.93876743.812317769At roadside right-of-way, soils are graveled loam. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9257Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 4 air mi SE of Cactus Flats, Martin Dam.-101.839443.810633767In clay pan drainage of a stock dam, soils are clay. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9276Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: ca 9 air mi SW of Kadoka.-101.66771743.774067711In prairie uplands with clay soil, old revegetated badlands floodplain. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9296Grace M. Kostel2005723204U.S.A.South DakotaJacksonBuffalo Gap National Grassland and Vicinity: near the White River, ca 9 air mi SW of Kadoka.-101.63806743.780167690In large deep cut stream channel emptying into the river, soils are clay. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9571Grace M. Kostel200587219U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 11.5-12 air mi ESE of Farmingdale and adjacent to west bank of Cheyenne River.-102.67853343.898483746In an abandoned channel of river, soil of clay muck.. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9589Grace M. Kostel200587219U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 9 air mi SE of Farmingdale in Cole Draw.-102.72961743.881780Soils are shale and silt. Phenology: flowering & fruiting.RMRM940129 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.65689B. E. Nelson2005727208U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Rancho del Rio Grande Grant: along Rio Chiquito on Forest Road 437, ca 1.5 air mi W of Tombe; ca 4 air mi ESE of Ranchos de Taos.-105.539936.329722562286Canyon bottom. Phenology: flowering.RMRM940130 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.65718B. E. Nelson2005728209U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Rancho del Rio Grande Grant: along Rio Chiquito on Forest Road 437, ca 1 air mi S of Pinoreal Peak, ca 6.5 air mi SE of Ranchos de Taos.-105.506336.304624392560Old beaver ponds and along the river. Phenology: buds.RMRM940121 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.66196B. E. Nelson200583215U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: between Middle and Upper Canjion lakes, ca 8-8.5 air mi NE of Canjilon; ca 16 air mi SE of Tierra Amarilla.-106.329636.55830423054Along lakeshore, beaver ponds, marshes, seeps, and adjacent areas. Phenology: buds.RMRM940135 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2706Jill E. Larson2005719200U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Valle Vidal Unit: upper Costilla Creek from Forest Road 1900, ca 13 air mi NE of Red River.-105.297536.86152789Stream riparian area and meadow uplands with scattered Engelmann spruce. Phenology: flowering.RMRM940134 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3302Jill E. Larson2005729210U.S.A.New MexicoTaosCarson National Forest and Vicinity: Lama Canyon, Forest Road 132A, ca 2 air mi E of Lama and Forest Road 9.-105.589536.64662606Canyon bottom with Rubus in burned area. Phenology: flowering & fruiting.RMRM940133 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3889Jill E. Larson200588220U.S.A.New MexicoTaosCarson National Forest and Vicinity: Sangre de Cristo Range: Valle de los Romeros W through Policarpio Canyon to Forest Road 76, Forest Trail 13, ca 4 air mi E of Tres Ritos.-105.441236.134526522957Roadside. Phenology: flowering.RMRM940132 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4367Jill E. Larson2005815227U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: end of Forest Road 1893 north side of U.S. Hwy 64, N of Buckhorn Canyon, ca 14 air mi NW of Tres Piedras.-106.209436.73592957Logged mixed conifer forest. Phenology: flowering.RMRM940131 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4522Jill E. Larson2005819231U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Cruces Basin Wilderness: Forest Road 686 W of Osier Mesa, ca 3 air mi S of state line, ca 16 air mi W of San Miguel.-106.444436.976632623353Regrowth of logged Engelmann spruce-corkbark fir forest and meadow openings of Thurber fescue. Phenology: buds.RMRM940120 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.81151Ronald L. Hartman2005722203U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Rio de los Pinos, ca 0.6 air mi SW of Los Pinos.-106.073836.982924392560Roadside. Phenology: flowering & fruiting.RMRM949493 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10119Jill E. Larson2006811223U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Cimarron Range: Colin Neblett State Wildlife Area: Tolby Creek ca 1.5 air mi S of Cimarron Canyon and U.S. Hwy 64, ca 3 air mi ESE of Eagle Nest, ca 1.5 air mi E of east shore of Eagle Nest Lake.-105.224736.536625912667Along creek with Alnus tenuifolia, Rosa, Rudbeckia laciniata var. ampla, and Rubus. Phenology: buds.RMRM949492 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10199Jill E. Larson2006811223U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Eagle Nest Lake State Park: Moreno Day Use Area, on south side of U.S. Hwy 64, ca 3/4 air mi SSE fo Eagle Nest.-105.250136.54452498Along north shore of reservoir with Hordeum jubatum, Verbascum thapsis, and Cirsium arvense. Phenology: flowering & fruiting.RMRM949491 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11004Jill E. Larson2006823235U.S.A.New MexicoTaosCarson National Forest and Vicinity: Picuris Pueblo Indian Reservation: southwest corner of Reservation, ca 0.5 air mi W of Chamisal in thinning treatment area.-105.748336.163622402271Moist area where arroyo runs into culvert under road; disturbed area near road. Phenology: flowering.RMRM949499 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7179Jill E. Larson2006627178U.S.A.New MexicoTaosCarson National Forest and Vicinity: Picuris Pueblo Indian Reservation: E of NM Hwy 76, ca 1 air mi NNE of Chamisal and ca 2 air mi SSW of Picuris Pueblo.-105.721336.181123012335Artificial ponds ringed with Schoenoplectus and Typha; surrounding areas disturbed by creation of ponds. Phenology: flowering.RMRM949498 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8336Jill E. Larson2006715196U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Sangre de Cristo Range: Valle Vidal Unit: Forest Road 1913, ca 2.5 air mi S of Shuree Ponds and ca 10 air mi WNW of Red River.-105.21136.72793201Mixed conifer forest of Pinus flexilis, Pseudotsuga menziesii, Picea engelmannii, Abies concolor, and Abies arizonica, and understory with Arctostaphylos uva-ursi and Juniperus communis var. depressa; old logging roads with tree saplings. Phenology: flowering.RMRM949497 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8428Jill E. Larson2006715196U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Sangre de Cristo Range: Valle Vidal Unit: along Middle Ponil Creek S toward Greenwood Canyon from Forest Road 1910, ca 13 air mi E of Red River and ca 2 mi N of Forest Boundary.-105.181836.72472591Disturbed areas along road in stream drainage surrounded by ponderosa pine forest on west exposure and spruce/Abies concolor on east exposure. Phenology: buds.RMRM949496 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8456Jill E. Larson2006715196U.S.A.New MexicoColfaxCarson National Forest and Vicinity: Sangre de Cristo Range: Valle Vidal Unit: Beatty Lakes and vicinity from Forest Road 1914, ca 15 air mi ENE of Red River.-105.149436.73372591On edge of Ponil burn area in burned ponderosa pine forest. Phenology: buds.RMRM949495 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9280Jill E. Larson2006726207U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: Forest Road 80, just N of Rio Tusas, ca 3 air mi NE of Hopewell Lake and ca 12 air mi NW of Tres Piedras.-106.186936.74492789Meadows with Festuca arizonica and groups of Populus tremuloides, Abies concolor, and Pseudotsuga menziesii with Juniperus communis underneath. Phenology: flowering.RMRM949494 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9478Jill E. Larson2006729210U.S.A.New MexicoRio ArribaCarson National Forest and Vicinity: vicinity of Burns Lake, ca 1 air mi S of Trout Lakes, ca 8 air mi NNE of Canjilon.-106.380136.58722850Large meadow opening with groups of Populus tremuloides; moist areas with Alnus tenuifolia, Salix species, and Veratrum californicum. Phenology: flowering.RMRM949490 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.83509Ronald L. Hartman2006816228U.S.A.New MexicoTaosCarson National Forest and Vicinity: Wissmath Craters among La Segita Peaks.-105.947136.818825762591Crater bottom with two tanks and ephemerel ponds. Phenology: flowering & fruiting.RMRM800746 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.52424B. E. Nelson Luanne Lum200167158U.S.A.WyomingHot SpringsBighorn Basin: above the head of Buffalo Springs Creek on a tributary of Nowater Creek, ca 3 air mi N of Hawks Butte, ca 18 air mi SW of Big Trails; ca 32 air mi E of Thermopolis.-107.605143.610516151750Steep, clay slopes and ridgetop with scattered vegetation. Phenology: flowering.RMRM803865 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1043Luanne Lum2001724205U.S.A.WyomingParkBighorn Basin: along Heart Mountain Canal access road, ca 7.5 air mi NNE of Cody and ca 17.5 air mi ESE of Powell.-109.00744.629615731588Drainage channel. Phenology: flowering.RMRM800752 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.158Luanne Lum2001618169U.S.A.WyomingHot SpringsBighorn Basin: along County Road 26, ca 5 air mi N of Thermopolis.-108.205843.70613411371Roadside ditch. Phenology: flowering.RMRM800751 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.329Luanne Lum2001625176U.S.A.WyomingHot SpringsBighorn Basin: along Gooseberry Creek or County Road 14, ca 15 air mi ESE of Meeteetse.-108.580244.013316151670Roadside ditch. Phenology: flowering.RMRM800750 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.383Luanne Lum2001627178U.S.A.WyomingWashakieBighorn Basin: along BLM Road at Little Slick Creek, ca 2.5 air mi SE of Worland.-107.898344.000412751280Riparian. Phenology: flowering.RMRM800749 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.645Luanne Lum200179190U.S.A.WyomingBig HornBighorn Basin: along Beaver Creek or County Road 258, ca 6.4 air mi NNW of Shell and ca 13 air mi ENE of Greybull.-107.832844.586213351349Area surrounding reservoir with sandy to clayey soil. Phenology: flowering.RMRM800748 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.789Luanne Lum2001716197U.S.A.WyomingBig HornBighorn Basin: along Highline Ditch on County Lane 35, ca 13.5 air mi W of Greybull and ca 3.4 air mi ESE of Emblem.-108.319144.494413471353Riparian with Salix and Populus on north bank. Phenology: flowering.RMRM800745 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.929Luanne Lum2001723204U.S.A.WyomingParkBighorn Basin: along Wood River or County Road 4DT crossing Wood River, ca 9.8 air mi SSW of Meeteetse.-108.981144.04281957Riparian with Salix. Phenology: flowering.RMRM800747 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.959Luanne Lum2001723204U.S.A.WyomingParkBighorn Basin: along West Timber Creek, ca 15 air mi WSW of Meeteetse.-109.141544.072420792085Riparian with Salix on sandy soil. Phenology: flowering.RMRM933396 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57451B. E. Nelson2002714195U.S.A.WyomingWashakieBighorn Basin: ridge leading NW off Lightning Ridge on the Nowater Trail or BLM Road 1404, ca 10 air mi SW of Big Trails; ca 36 air mi SE of Worland.-107.460443.664716641676Slopes below sandstone rimrock in small canyon with chokecherry/skunkbush thickets and narrowleaf cottonwood. Phenology: flowering & fruiting.RMRM933395 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57528B. E. Nelson2002716197U.S.A.WyomingParkBighorn Basin: in the vicinity of the confluince of Parker Spring Gulch and Fifteenmile Creek, ca 4 air mi N of Whistle Berry Hill, ca 11.5 air mi ENE of Meeteetse.-108.641844.190515241530Silt/sand or cobble bars and banks along stream channels. Phenology: flowering.RMRM933423 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57588B. E. Nelson2002716197U.S.A.WyomingBig HornBighorn Basin: Road Reservoir and Charco along Fifteenmile Creek or BLM Road 1429, ca 0.5 air mi NW of Dead Indian Hill, ca 28 air mi WSW of Basin.-108.54144.20491460Dry reservoir bottom. Phenology: flowering.RMRM933422 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57621B. E. Nelson2002718199U.S.A.WyomingBig HornBighorn Basin: Montgomery Draw Wetland Protection Project ca 1.5 air mi N of Fivemile Creek, ca 7 air mi SW of Manderson; ca 11.5 air mi S of Basin.-108.07744.21941295Dry reservoir area and areas below the dam. Phenology: flowering.RMRM933421 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57705B. E. Nelson2002718199U.S.A.WyomingBig HornBighorn Basin: at White Reservoir along White Gulch, ca 0.5 air mi W of Dorsey Creek and ca 1.5 mi S of the Greybull River, ca 4.5 air mi ESE of Otto; ca 7 air mi W of Basin.-108.177844.39311228On reservoir dam. Phenology: fruiting.RMRM933420 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57735B. E. Nelson2002718199U.S.A.WyomingBig HornBighorn Basin: along County Lane 43 and along the Greybull River, ca 2 air mi SE of Otto; ca 10 air mi W of Basin.-108.238444.378612431250Thicket along the road with a seep. Phenology: flowering.RMRM933416 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57773B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: Chimney Reservoir between Chimney Springs Draw and Fiscus Gulch, ca 3 air mi SE of Castle Gardents, ca 6 air mi S of Ten Sleep.-107.471943.9381475Dry reservoir bed. Phenology: fruiting.RMRM933415 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57798B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: Bedstead Reservoir on a tributary of North Fork Bud Kimball Creek, ca 2 air mi S of Castle Gardens, ca 8 air mi SSW of Ten Sleep.-107.512143.92351484Dry reservoir bed. Phenology: flowering.RMRM933394 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57811B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: along Indian Creek, ca 4--5 air mi E of Big Cedar Ridge and 3--4 air mi W of the Nowood River, ca 13.5 air mi S of Ten Sleep.-107.440243.839414631493Edge and dry upper end of reservoir. Phenology: flowering.RMRM933393 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57819B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: along Indian Creek, ca 4--5 air mi E of Big Cedar Ridge and 3--4 air mi W of the Nowood River, ca 13.5 air mi S of Ten Sleep.-107.440243.839414631493Edge and dry upper end of reservoir. Phenology: flowering.RMRM933392 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57840B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: just E of Blue Bank or BLM Road 1411 and ca 0.5 air mi W of Bud Kimball Creek, ca 2 air mi NE of Middle Butte, ca 11.5 air mi SSW of Ten Sleep.-107.532243.88011481Dry reservoir bed. Phenology: flowering & fruiting.RMRM933391 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57851B. E. Nelson2002721202U.S.A.WyomingWashakieBighorn Basin: Green Bug Reservoir area on Little Cottonwood Creek, ca 2 air mi WSW of Castle Gardens, ca 7.5 air mi SW of Ten Sleep.-107.552243.95241481Clay flats in old reservoir bed. Phenology: flowering & fruiting.RMRM933390 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57899B. E. Nelson2002723204U.S.A.WyomingBig HornBighorn Basin: along Nowood River ca 0.5 air mi S of County Road 50, ca 3.5 air mi NW of McDermotts Butte, ca 5.5 air mi E of Manderson; ca 12.5 air mi SE of Basin.-107.85544.262812161231River bank thickets. Phenology: flowering.RMRM933389 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.57935B. E. Nelson2002723204U.S.A.WyomingWashakieBighorn Basin: along Lower and Upper Hanover canals at the end of Lane 7, ca 7.5-8 air mi NNE of Worland.-107.878144.117112311250Disturbed flats with Siberian elm, Russian olive, cottonwood, and shrubs. Phenology: flowering.RMRM933418 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3076Luanne Lum2002624175U.S.A.WyomingWashakieBighorn Basin: along Wyo Hwy 434 E of Nowood River, ca 9 air mi SSE of Ten Sleep.-107.3843.91131378Agricultural ditch. Phenology: buds.RMRM649174 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2220Amy J. Roderick1997714195U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Teton Reservoir E of Wyo Hwy 71, ca 12.4 air mi S of Rawlins.-107.252341.60612134Riparian area surrounding reservoir. Phenology: flowering.RMRM933436 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3627Luanne Lum200273184U.S.A.WyomingWashakieBighorn Basin: along BLM Road 1431 N of Wyo Hwy 431, ca 25.5 air mi W of Worland.-108.459944.01331490Reservoir and sagebrush. Phenology: flowering.RMRM933435 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3734Luanne Lum200276187U.S.A.WyomingBig Horn[location and coordinates withheld]1197Agricultural ditch. Phenology: flowering.RMRM933434 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4477Luanne Lum Michelle Wilson2002717198U.S.A.WyomingParkBighorn Basin: along BLM Road 1314 and Greybull River, ca 14 air mi WSW of Meeteetse.-109.141544.10220062041Riparian. Phenology: flowering.RMRM933433 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4534Luanne Lum Michelle Wilson2002720201U.S.A.WyomingParkBighorn Basin: along the Greybull River at Four Bear oil field, ca 18.5 air mi WSW of Meeteetse.-109.241744.116721342195Riparian. Phenology: flowering.RMRM933432 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4640Luanne Lum Michelle Wilson2002720201U.S.A.WyomingHot SpringsBighorn Basin: along County Road 36 and Grass Creek, ca 2.5 air mi W of Grass Creek (Post Office) and ca 32 air mi NW of Thermopolis.-108.700543.954217621780Juniper and sagebrush. Phenology: flowering.RMRM933431 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4704Luanne Lum Michelle Wilson2002722203U.S.A.WyomingBig HornBighorn Basin: along Coon Creek, ca 2 air mi S of Byron.-108.521144.774412191222Riparian. Phenology: flowering.RMRM933430 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4743Luanne Lum Michelle Wilson2002722203U.S.A.WyomingBig HornBighorn Basin: along Shoshone River, ca 1.5 air mi E of Byron.-108.480644.80331201Riparian. Phenology: flowering.RMRM933429 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4832Luanne Lum Michelle Wilson2002723204U.S.A.WyomingParkBighorn Basin: along County Road-108.628444.907512951298Reservoir. Phenology: flowering.RMRM933428 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4888Luanne Lum Michelle Wilson2002723204U.S.A.WyomingParkBighorn Basin: along Shoshone River W of Willwood Dam and County Road-108.905844.67313441371Riparian. Phenology: flowering.RMRM933427 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4895Luanne Lum2002726207U.S.A.WyomingWashakieBighorn Basin: E of Little Slick Creek, ca 4.9 air mi ESE of Worland.-107.878144.00041292Irrigation ditch. Phenology: flowering.RMRM933426 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4949Luanne Lum2002729210U.S.A.WyomingBig HornBighorn Basin: along Orchard Bench or County Road 1121 and Elk Creek, ca 5 air mi S of Basin.-108.036644.30621189Mixed riparian and sagebrush. Phenology: flowering & fruiting.RMRM933425 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4987Luanne Lum2002729210U.S.A.WyomingParkBighorn Basin: along County Road 6WX and South Fork Shoshone River at Rock Creek, ca 22.5 air mi SW of Cody.-109.408444.320717911810Riparian and sagebrush. Phenology: flowering.RMRM933424 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5022Luanne Lum2002729210U.S.A.WyomingParkBighorn Basin: along County Road 6QS at South Fork Shoshone River and Sheep Creek, ca 13.5 air mi SW of Cody.-109.267244.407616701673Riparian. Phenology: flowering.RMRM933404 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5097Luanne Lum2002730211U.S.A.WyomingWashakieBighorn Basin: on Bighorn Canal W of Wyo Hwy 433, ca 8.6 air mi N of Worland.-107.938744.13161236Irrigation canal. Phenology: flowering.RMRM933403 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5159Luanne Lum200282214U.S.A.WyomingBig HornBig Horn Mountains: along Alkali or Forest Road 338 and Forest Road 17 at Mill Creek, ca 30.5 air mi E of Greybull.-107.455244.453926442670Sagebrush. Phenology: flowering.RMRM933419 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5351Luanne Lum200285217U.S.A.WyomingBig HornBig Horn Mountains: along Forest Road 13 and Bald Mountain Creek, ca 28 air mi E of Lovell; ca 25.3 air mi NNE of Greybull.-107.85344.817827372743Spruce and exposed slope. Phenology: buds.RMRM933402 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5425Luanne Lum200285217U.S.A.WyomingBig HornBighorn Basin: at Five Springs Creek, ca 16 air mi ESE of Lovell.-108.09644.788913031304Riparian. Phenology: flowering.RMRM933401 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5448Luanne Lum200287219U.S.A.WyomingParkBighorn Basin: on Cottonwood Creek at Wyo Hwy 120, ca 7.5 air mi NW of Cody.-109.128544.615116151634Riparian on sandy soil. Phenology: flowering.RMRM933417 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5620Luanne Lum2002810222U.S.A.WyomingParkBighorn Basin: along Forest Road 200 at Wood River, ca 21 air mi SW of Meeteetse.-109.141543.924622462256Riparian and mixed coniferous forest. Phenology: buds.RMRM933400 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5722Luanne Lum2002811223U.S.A.WyomingParkAbsaroka Mountains: along Sunlight Creek at Forest Road 101 crossing in Sunlight Basin, ca 28.5 air mi WNW of Cody.-109.573844.73092079Riparian. Phenology: flowering.RMRM933399 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5802Luanne Lum2002815227U.S.A.WyomingHot SpringsBighorn Basin: on ridge top N of Cottowood Creek between Ota and Twentyone creeks at rain trap, ca 35 air mi ENE of Thermopolis.-108.863243.806923042353Mixed coniferous forest and sagebrush. Phenology: flowering.RMRM933398 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5834Luanne Lum2002816228U.S.A.WyomingHot SpringsBighorn Basin: along Grass Creek and Wyo Hwy 171, ca 25 air mi NW of Thermopolis.-108.5243.924615731577Riparian. Phenology: flowering.RMRM933397 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5873Luanne Lum2002817229U.S.A.WyomingBig HornBighorn Basin: along Dry Creek and drainage canal, ca 8.5 air mi W of Greybull.-108.218244.49441243Riparian. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2431Margarette J. Lyon1993811223U.S.A.ColoradoSan Miguel[location and coordinates withheld]2621In aspen forest and clearing. Phenology: flowering & fruiting.RMRM649149 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2284Amy J. Roderick1997714195U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Kindt Reservioir E of Wyo Hwy 71, ca 14.7 air mi SE of Rawlins; ca 13 air mi S of Sinclair.-107.080241.59162073Dry shores of reservoir lined with Tamarix chinensis. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5554Margarette J. Lyon199476187U.S.A.ColoradoMontrose[location and coordinates withheld]1859Riparian area with Quercus, Rhus, and Crataegus; pinyon-juniper uplands. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6318Margarette J. Lyon1994722203U.S.A.ColoradoSan Miguel[location and coordinates withheld]2256Riparian area with Salix exigua. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6754Margarette J. Lyon199485217U.S.A.ColoradoSan MiguelSan Miguel and Lower Dolores River Drainages: Sunshine Mesa at wilderness boundary.-107.92137.87192987Meadow with mixed forbs and grasses. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6788Margarette J. Lyon199485217U.S.A.ColoradoSan MiguelSan Miguel and Lower Dolores River Drainages: Sunshine Mesa at wilderness boundary.-107.92137.87192987Lake. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7234Margarette J. Lyon1994811223U.S.A.UtahGrand[location and coordinates withheld]2591Open, flat meadow with Solidago and Potentilla. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7800Margarette J. Lyon1994822234U.S.A.ColoradoSan MiguelSan Miguel and Lower Dolores River Drainages: along Whipple Mountain Trail.-107.957637.98792987At beaver ponds. Phenology: flowering & fruiting.RMRM700474 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11499Stuart Markow1996815228U.S.A.WyomingTetonTeton Range East Slope: Rendezvous Mountain, ca 0.5 air mi NW of Teton Village, ca 8 air mi NW of Jackson.-110.835443.590819201951Seepage area in aspen stand on low-angle, east-facing slope with Urtica dioica, Prunus viginiana, Populus tremuloides and Amelanchier alnifolia. Phenology: flowering & fruiting.RMRM699995 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11607Stuart Markow1998711192U.S.A.WyomingTetonGrand Teton National Park: Teton Science School grounds, 50 to 100 yds W of Major Laboratory/Murie Museum, 25 air mi N of Jackson, 1/4 mi S of Ditch Creek.-110.596443.67722103Sparsely - distributed aspen with Symphoricarpos oreophilus, Rosa woodsii, Bromus carinatus and Geranium viscosissimum. Phenology: fruiting.RMUSFS842841 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3044Rob Massatti2005725206U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: Weed Draw to Canyon Creek, ca 12 air mi S of Lander.-108.748842.672923352521River banks and gravel beds in river. Phenology: flowering.RMUSFS842840 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4093Rob Massatti2005813225U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: Frye Lake, ca 8 air mi SW of Lander.-108.873442.70782600Roadside. Phenology: flowering.RMUSFS842839 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4383Rob Massatti200593246U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: Middle Fork Popo Agie at forest boundry, ca 6 air mi SW of Lander.-108.833242.736819601978River banks, mixed coniferous/aspen cover. Phenology: flowering.RMUSFS842838 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9021Rob Massatti Rick Massatti2006825237U.S.A.WyomingFremontEast Slope Wind River Range and Vicinity: Louis Creek below Louis Lake, ca 17 air mi SSE of Lander.-108.83342.596925422628Stream bed. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2690Melanie Arnett199887219U.S.A.ColoradoGunnisonSouthern Gunnison Basin: along south side of U.S. Hwy 50, just S of the cemetary, ca 1.6 road mi E of downtown Gunnison.-106.884238.5362347Roadside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2748Melanie Arnett199887219U.S.A.ColoradoGunnisonSouthern Gunnison Basin: ca 1.5 air mi N of Maple Leaf Mine; ca 5 road mi S of U.S. Hwy 50; ca 10 air mi SE of Gunnison along Colo Hwy 114.-106.756938.46312378Roadside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2791Melanie Arnett199887219U.S.A.ColoradoSaguacheSouthern Gunnison Basin: ca 4.3 air mi NW of Razor Creek Dome; ca 8 air mi NE of Agency Peak; ca 20 air mi WSW of Sargents along Colo Hwy 114.-106.772638.34632530Roadside riparian. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3496Melanie Arnett1998819231U.S.A.ColoradoGunnisonSouthern Gunnison Basin: ca 1.5 air mi due E of Fitzpatrick Reservoir; ca 4.1-4.6 road mi from U.S. Hwy 50; ca 23 air mi ESE of Montrose along County Road 864.-107.475238.357923532439Roadside. Phenology: flowering & fruiting.RMRM748087 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5754Melanie Arnett1999728209U.S.A.ColoradoSaguacheSouthern Gunnison Basin: ca 0.1 road mi W of Colo Hwy 114 on BLM Road 3074, ca 3.6 air mi ESE of Cooper Mountain; ca 4.9 air mi NW of Razor Creek Dome.-106.772638.361525572564Spring and roadside in deep sagebrush ravine. Phenology: flowering & fruiting.RMRM748086 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7448Melanie Arnett1999824236U.S.A.ColoradoGunnisonSouthern Gunnison Basin: Colo Hwy 149 along lower portion of Dutch Gulch, ca 1.3 air mi ESE of Gateview; ca 2.5 air mi WNW of Cap Mountain.-107.196538.28072560Roadside. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3892Lynn Marie Moore1994816228U.S.A.ColoradoDoloresUpper Dolores River Drainage and Adjacent Areas: San Juan National Forest: Lower Scotch Creek, Forest Road 550, just off Colo HWY 145; ca 3.5 air mi south of Rico.-107.914437.6426822743Blue spruce, aspen and Douglas-fir forest and riparian area along creek and surrounding canyon. North to south facing. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4039Lynn Marie Moore1994823235U.S.A.ColoradoMontezumaUpper Dolores River Drainage and Adjacent Areas: San Juan National Forest: Golconda, along south fork of West Mancos river, West Mancos Trail, ca 16 air mi NE of Mancos.-108.150237.464527742804Aspen, blue spruce, serviceberry and cinquefoil; Montane meadow and seepage above river; West facing. Phenology: flowering & fruiting.RMRM649167 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2538Amy J. Roderick1997720201U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: First Sand Creek and ridge to west, ca 7.2 air mi N of Elk Mountain townsite; ca 15.2 air mi SE of Hanna.-106.410941.79122164Dry to muddy creek bed and embankments. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.65202B. E. Nelson2005613164U.S.A.WyomingFremontWetlands and Adjacent Areas: Antelope Flats Wetland, between Muddy and Fivemile creeks, ca 15.5-16 air mi N of Riverton.-108.449343.25241585Around edge of reservoir and along ditch. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1781Rachel Newton2005710191U.S.A.WyomingCarbonWetlands and Adjacent Areas: North Platte River, ca 12 air mi NE of Rawlins.-107.066241.88251946Moist banks and flood plains. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1799Rachel Newton2005710191U.S.A.WyomingCarbonWetlands and Adjacent Areas: North Platte River, ca 32 air mi NE of Rawlins.-106.878742.211796Flooded banks and flood plains. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1840Rachel Newton2005711192U.S.A.WyomingNatronaWetlands and Adjacent Areas: Pathfinder Reservoir, ca 41 air mi SE of Casper.-107.0642.50811735Dry uplands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1921Rachel Newton2005714195U.S.A.WyomingGoshenWetlands and Adjacent Areas: Grayrocks Reservoir, ca 10 air mi NE of Wheatland.-104.7542.13641300Moist mud flats. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1935Rachel Newton2005714195U.S.A.WyomingGoshenWetlands and Adjacent Areas: North Laramie River, ca 7 air mi due N of Wheatland.-104.93842.15161349Exposed riverbed and moist banks. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2018Rachel Newton2005715196U.S.A.WyomingGoshenWetlands and Adjacent Areas: North Platte River, ca 23 air mi SE of Guernsey, 2 air mi S of Lingle.-104.351642.10591226Flooded banks and moist flood plains. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2058Rachel Newton2005715196U.S.A.WyomingPlatteWetlands and Adjacent Areas: wetlands below Glendo Dam, North Platte River, ca 17 air mi NE of Guernsey.-104.944642.46651376Marshy banks. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2461Rachel Newton2005725206U.S.A.WyomingNatronaWetlands and Adjacent Areas: Muddy Creek, ca 16 air mi SE of Casper.-106.118742.73411671Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2507Rachel Newton2005725206U.S.A.WyomingCarbonWetlands and Adjacent Areas: Hunt Creek, ca 32 air mi S of Casper.-106.344442.39572039Dry creek bed. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2527Rachel Newton2005725206U.S.A.WyomingConverseWetlands and Adjacent Areas: North Platte River, ca 20 air mi NW of Douglas.-105.793542.83051534Moist banks and flood plains. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2574Rachel Newton2005727208U.S.A.WyomingAlbanyWetlands and Adjacent Areas: Twin Buttes Reservoir, ca 15 air mi SW of Laramie.-105.854741.23542206Moist sandy beach. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2651Rachel Newton2005729210U.S.A.WyomingAlbanyWetlands and Adjacent Areas: Little Laramie River, ca 5 air mi SE of Centennial.-106.083341.25122259Moist banks and flood plains. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2852Rachel Newton2005731212U.S.A.WyomingGoshenWetlands and Adjacent Areas: Horse Creek, ca 8.5 air mi SW of Yoder.-104.152341.86211278Dry uplands. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2931Rachel Newton2005731212U.S.A.WyomingPlatteWetlands and Adjacent Areas: Antelope Creek and pond formed by damming, ca 14 air mi NNW of Chugwater.-104.898241.94061470Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3017Rachel Newton200583215U.S.A.WyomingCarbonWetlands and Adjacent Areas: Watkins Creek, ca 6 air mi SSE of Medicine Bow.-106.139341.67032157Dry uplands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3082Rachel Newton200584216U.S.A.WyomingNatronaWetlands and Adjacent Areas: confluence of Cottonwood Creek and Alcova Reservoir, ca 30 air mi SW of Casper.-106.745942.52051668Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3109Rachel Newton200584216U.S.A.WyomingNatronaWetlands and Adjacent Areas: confluence of Horse Creek and Fish Creek, ca 34 air mi SW of Casper.-106.964742.60221819Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3115Rachel Newton200586218U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: Bitter Creek, ca 36 air mi E of Rock Springs.-108.55241.55621971Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3154Rachel Newton200586218U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: Green River, ca 30 mi NNW of Rock Springs.-109.73641.76441896Moist river banks and exposed bottoms. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3268Rachel Newton200587219U.S.A.WyomingLincolnWetlands and Adjacent Areas: Hams Fork, ca 11 air mi NW of Kemmerer.-110.639641.92922162Dry uplands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3307Rachel Newton200587219U.S.A.WyomingUintaWetlands and Adjacent Areas: Blacks Fork, ca 6 air mi NE of Lyman.-110.211441.38981979Dry, rocky uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3389Rachel Newton2005810222U.S.A.WyomingFremontWetlands and Adjacent Areas: Sweetwater River, ca 38 air mi SE of Lander.-108.077342.57991971Exposed mud flats and river banks. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3456Rachel Newton2005811223U.S.A.WyomingFremontWetlands and Adjacent Areas: Ocean Lake, ca 18 air mi NW of Riverton.-108.619343.211609Moist shoreline and flood plains. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3481Rachel Newton2005811223U.S.A.WyomingFremontWetlands and Adjacent Areas: Ocean Lake, ca 16 air mi NW of Riverton.-108.577443.19961613Moist shores and flood plains. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3613Rachel Newton2005825237U.S.A.WyomingSubletteWetlands and Adjacent Areas: East Fork River, ca 15 air mi SE of Pinedale.-109.682342.71482086Dry uplands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3647Rachel Newton2005826238U.S.A.WyomingSubletteWetlands and Adjacent Areas: New Fork Lakes, ca 17 air mi N of Pinedale.-109.91643.11422317Moist shores and uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3674Rachel Newton2005826238U.S.A.WyomingSubletteWetlands and Adjacent Areas: irrigation ditch and spring-fed stream, ca 2 air mi SE of Pinedale.-109.828642.84692146Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3778Rachel Newton200593246U.S.A.WyomingPlatteWetlands and Adjacent Areas: Glendo Reservoir, ca 4 air mi N of Glendo.-105.03342.55941402Dry uplands. Phenology: flowering.RMRM649168 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2629Amy J. Roderick1997720201U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Fiddlers Green Reservoir E of County Road 115, ca 6 air mi N of Elk Mountain townsite.-106.410941.77662195Perimeter of reservoir comprised of graminoids and scattered forbs. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5188Rachel Newton2006622173U.S.A.WyomingWashakieWetlands and Adjacent Areas: Brokenback Creek, ca 6 air mi NNW of Ten Sleep.-107.4985444.100381368Along moist creek banks. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6101Rachel Newton2006719200U.S.A.WyomingNatronaWetlands and Adjacent Areas: Dugout Creek, ca 9 air mi W of Midwest.-106.4401243.415481455Growing along stagnant creek. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6112Rachel Newton2006720201U.S.A.WyomingJohnsonWetlands and Adjacent Areas: Rock Creek, ca 10 air mi NW of Buffalo.-106.8473844.443661507Dry, shaded uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6140Rachel Newton2006720201U.S.A.WyomingJohnsonWetlands and Adjacent Areas: man-made lake, ca 15 air mi SSE of Buffalo.-106.5415344.101441390Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6154Rachel Newton2006720201U.S.A.WyomingJohnsonWetlands and Adjacent Areas: North Fork Crazy Woman Creek, ca 14 air mi S of Buffalo.-106.6663144.082771425Dry uplands. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6182Rachel Newton2006720201U.S.A.WyomingJohnsonWetlands and Adjacent Areas: North Fork Powder River, ca 4 air mi NW of Kaycee.-106.7025643.775741497Along moist river banks and flood plains. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6188Rachel Newton2006720201U.S.A.WyomingJohnsonWetlands and Adjacent Areas: Red Fork Powder River, ca 9 air mi W of Kaycee.-106.8155943.695281528Dry flood plains. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6216Rachel Newton2006720201U.S.A.WyomingJohnsonWetlands and Adjacent Areas: Blue Creek, ca 15 air mi WSW of Kaycee.-106.9108643.6541560Dry uplands. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6255Rachel Newton2006725206U.S.A.WyomingHot SpringsWetlands and Adjacent Areas: Big Horn River, ca 4 air mi S of Thermopolis.-108.1640343.691761357Dry uplands. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6655Rachel Newton James Pray200688220U.S.A.WyomingTetonWetlands and Adjacent Areas: Snake River, ca 6 air mi S of Jackson.-110.7512843.385651822Moist flood plains. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6703Rachel Newton James Pray200688220U.S.A.WyomingTetonWetlands and Adjacent Areas: Snake River, ca 4 air mi NW of Jackson.-110.8406943.500821871Moist shores and flood plains of retention pond. Phenology: flowering & fruiting.RMUSFS475921 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.437Dieffenbach Glennon, Holte Mel, Pearson, and Vieth1979812224U.S.A.IdahoBonnevilleNW.1859Phenology: flowering & fruiting.RMRM355372 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.813Ellen Collins1983712193U.S.A.MontanaBig HornEast Cabin Creek along Yellowtail Reservoir.-107.303745.80081158Riparian bottom in populus/acer cover class. Phenology: flowering & fruiting.RMRM354979 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.899Ellen Collins198389221U.S.A.MontanaBig HornSlopes above Fort Smith near substation.-107.938445.31061067Tall grass prairie. Phenology: flowering & fruiting.RMRM359510 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1232Gary I. Baird198479191U.S.A.WashingtonBentonCold Creek, where powerlines cross stream. By Saint Michelle Vineyards.-119.799846.5699312Grows in rocky-silty soil in sagebrush-riparian community. Phenology: flowering & fruiting.RMRM159109 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8161George E. Osterhout1934714195U.S.A.MontanaGlacierGlacier National Park: east entrance.-113.218148.4414Phenology: flowering & fruiting.RMUSFS475926 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.926James C. Whitham193184216U.S.A.MontanaGallatinGallatin National Forest: Gallatin Canyon at Second Bridge.-111.231645.43942042Common on level in sandy clay loam in patches with sage-asters. Phenology: flowering & fruiting.RMUSFS475925 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1616James C. Whitham1934922265U.S.A.MontanaGallatinGalltin National Forest: Montana Hwy. #10 near Manhattan.-111.330845.85631524Common on level in rocky along the roadside with grasses. Phenology: flowering & fruiting.RMRM285103 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1716Johnnie L. Gentry, Jr. Gerrit Davidse1967715196U.S.A.IdahoIdaho1 mi W of highway Junction, U.S. Hwy 95 and Idaho Hwy 13 at Grangeville.-116.234945.93911006In drainage ditch with Typha and Epilobium. Phenology: flowering & fruiting.RMUSFS475924 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.PFS-201Peter F. Stickney1958723204U.S.A.MontanaGraniteNear the Lolo National Forest: Intermountain (MRC) Range Experiment Station: 1 mi S of Drummond.-113.155246.65131219Grows on level along roadside with Agropyron repens. Phenology: flowering & fruiting.RMRM553797 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3332Richard R. Halse1986713194U.S.A.OregonBentonCorvallis, Witham Hill.-123.301244.5804120Grows with Daucus, Dipsacus, Juncus effusus, Festuca, Rumex, Sytisus, and Cirsium vulgare. Phenology: flowering & fruiting.RMRM553784 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3334Richard R. Halse1986716197U.S.A.OregonBentonCorvallis, Witham Hill.-123.301244.5804120Grows with Rubus, Juncus, Hypericum, Rumex, Cirsium vulgare, Festuca, Lathyrus, adn Cytisus. Phenology: flowering & fruiting.RMRM652162 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10720Stuart Markow1992814227U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: between Mack's Inn and Latham Spring, ca 14 air mi SW of Yellowstone, Montana.-111.225344.481120122073Coniferous forest dominated by Pinus contorta and Pseudotsuga menziesii. Phenology: flowering & fruiting.RMRM652161 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10792Stuart Markow1992817230U.S.A.MontanaFremontTarghee National Forest: Henry's Lake Mountains: along Twin Creek, ca 10 air mi SW of West Yellowstone.-106.20147.041620122073Coniferous forest dominated by Pseudotsuga menziesii and Symphoricarpos. Phenology: flowering & fruiting.RMRM652235 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5014Stuart Markow199185217U.S.A.IdahoTetonTarghee National Forest: E Slope Big Hole Mountains: Patterson Creek Trail, ca 7 air mi NW of Victor.-111.231343.542318902012Coniferous forest adjacent to creek, dominated by Abies lasiocarpa, Pinus contorta, and Picea engelmannii, some riparian. Phenology: flowering & fruiting.RMRM652233 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5748Stuart Markow1991813225U.S.A.IdahoFremontTarghee National Forest: Porcupine Creek Campground and surrounding area.-111.224144.09316761737Coniferous forest dominated by Pinus contorta, with openings and adjacent roadside, and some riparian. Phenology: flowering & fruiting.RMRM652232 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5901Stuart Markow1991815227U.S.A.IdahoTetonTarghee National Forest: West Slope Teton Range: Pinochle Rd, 0.5 mi E of entrance to National Forest.-111.089743.904720122103Coniferous forest dominated by Pinus contorta, Pseudotsuga menziesii, and Prunus virginiana. Phenology: flowering & fruiting.RMRM652213 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9299Stuart Markow1992713195U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: Island Park, along small creek ca 50 yds N of Buffalo River; ca 1/4 mi W of U.S. Hwy 20.-111.387244.51041920Swampy, sparsely forested area, dominated by Carex, grasses, and forbs, with scattered Pinus contorta and Salix. Phenology: flowering & fruiting.RMRM765255 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2576Sarah Nunn2001713194U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: Round Mountain off U.S. Hwy 34, ca 8 air mi W of Loveland.-105.292640.412320732195Dry east facing slopes with granite boulder piles with ponderosa pine and Douglas fir. Phenology: flowering.RMRM765254 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3388Sarah Nunn2001724205U.S.A.ColoradoLarimerRoosevelt National Forest: Medicine Bow Mountains: off Forest Road 200 above Hohnholz Lakes, ca 55 air mi NW of Fort Collins.-106.044540.942625912652Dry Chrysothamnus and Artemisia hillsides with scattered aspen glens. Phenology: flowering.RMRM765253 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3841Sarah Nunn2001731212U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: off Pennock Pass Road (County Road 44H) along Sheep Creek off Moody Hill Road (Forest Road 513), ca 11 air mi W of Fort Collins.-105.348540.57122042Lush, shaded creekside down north slope with Alnus and Prunus, in the foothills. Phenology: flowering.RMRM765252 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3997Sarah Nunn200182214U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: Pole Hill Road (Forest Road 122) from U.S. Hwy 36 to Estes Park, ca 16 air mi W of Loveland.-105.426740.364825002560West facing dry slopes with ponderosa pine, Douglas fir and Arctostaphylos, down to creek with aspen stands. Phenology: flowering.RMRM765251 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4279Sarah Nunn200187219U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: George Creek from Trail 886 off Sheep Creek Gaging Station Road, ca 32 air mi NW of Fort Collins.-105.524240.95223782500Dry hillsides with Artemisia and Ribes and creek in draw with aspen and Rosa. Phenology: flowering.RMRM765230 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4620Sarah Nunn2001811223U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: off Deadman Road (County Road 162) at intersection with Forest Road 309, ca 27 air mi NW of Fort Collins.-105.630140.802526522682Ponderosa pine hillsides with Ribes and with aspen in shallow ravines. Phenology: flowering.RMRM765229 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4857Sarah Nunn2001821233U.S.A.ColoradoLarimerRoosevelt National Forest and Vicinity: Front Range: north side of Cache la Poudre River, off Colo Hwy 14 just W of the State Fish Hatchery, ca 30 air mi W of Fort Collins.-105.71640.70192469Riverside forest with Populus, Betula, aspen groves, and Colorado blue spruce. Phenology: flowering.RMRM765228 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5005Sarah Nunn2001822234U.S.A.ColoradoLarimerRoosevelt National Forest: Front Range: Comanche Peak Wilderness: Surprise Pond from Emmaline Lake Trailhead near Pingree Park on Forest Road 145, ca 26 air mi W of Fort Collins.-105.584540.576327432926Lodgepole pine burn with pioneer species; Ceanothus, Epilobium, and Anaphalis, and pond edge: granite substrates with shallow soil. Phenology: flowering.RMRM649169 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2740Amy J. Roderick1997722203U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Seminoe Reservoir, ca 6 air mi SE of Seminoe Dam; ca 21.2 air mi NW of Hanna.-106.831842.10851960Sandy embankments of reservoir with tamarix and at the edge of sagebrush/greasewood flats. Phenology: flowering & fruiting.RMRM207377 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4394C. L. Porter1947816228U.S.A.WyomingAlbany5 mi W of Laramie.-105.6841.32092195Phenology: flowering & fruiting.RMRM649170 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2799Amy J. Roderick1997728209U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Jackson Lake N of Wyo Hwy 220, ca 8.6 air mi NE of Three Forks Junction.-107.337242.43831838Dry saline lake shores dominated by graminoids and bordered by sagebrush and greasewood. Phenology: fruiting.RMRM806488 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.75713Ronald L. Hartman2002712193U.S.A.New MexicoSandovalSanta Fe National Forest and Vicinity: Jemez Mountains: NM Hwy 4, ca 1.5 road mi from NM Hwy 126, Dark Canyon trailhead.-106.63178335.85222234Roadside. Phenology: flowering & fruiting.RMRM649171 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2859Amy J. Roderick1997729210U.S.A.WyomingCarbon[location and coordinates withheld]2128Dry creek bed. Phenology: flowering & fruiting.RMRM649172 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2922Amy J. Roderick1997731212U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Shirley Basin Reservoir N of Wyo Hwy 77, ca 25 air mi NW of Medicine Bow townsite.-106.364542.23852128Saline lake shores bordered by rabbitbrush and greasewood. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2345Robin Jones1991817229U.S.A.WyomingHot SpringsOwl Creek/Bridger Mountains: along Little Grass Creek, ca 9.5 air mi SW of Grass Creek Oil Field.-108.861443.8394421282243Riparian area.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2488Robin Jones1991825237U.S.A.WyomingHot SpringsOwl Creek/Bridger Mountains: Wind River Indian Reservation: Monument Peak.29263079Open, long ridge with slopes and benches.RMRM366067 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.621Andrew Warren1983817229U.S.A.WyomingCarbonSierra Madre: along Tullis Road overlooking Savery Creek, ca 38 air mi S of Rawlins.-107.336541.24342225Common on disturbed roadside with Bromus tectorum and Monolepis nuttalliana. Phenology: flowering & fruiting.RMRM330361 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.708Ann Aldrich1979829241U.S.A.WyomingSweetwaterCa 17 air mi S of Green River.-109.41741.28041906Loam in willow thicket with Melilotus alba, M. officinale, Chenopodium rubrum, Cardaria pubescens, Helianthus nuttallii, and Salix exigua. Phenology: flowering & fruiting.RMRM126243 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10745Aven Nelson192684216U.S.A.WyomingSheridanSheridan.-106.756244.79721143Roadsides and vacant lots. Phenology: flowering.RMRM37173 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.s.n.Aven Nelson1901U.S.A.WyomingLaramieCheyenne.-104.820241.14Phenology: flowering & fruiting.RMUSFS402539 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3267Charles Feddema196586218U.S.A.WyomingAlbanyCa 6 mi E of Centennial, on Wyo Hwy 130.-106.026941.29442378Weedy area along highway. Phenology: flowering.RMRM181573 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.s.n.County Agent1940U.S.A.WyomingPlatteProbably from near Wheatland.-104.952742.0544Phenology: flowering & fruiting.RMRM740739 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.20502N. Duane Atwood1995828240U.S.A.WyomingSweetwaterLittle Mountain state land: Head of Gooseberry Creek.2350Fir/willow/serviceberry in drainage. Phenology: flowering & fruiting.RMRM726741 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.940Donald L. Hazlett Melanie Arnett, Carlos A. Popolizio199679191U.S.A.WyomingPlatteCamp Guernsey: artifical pond ca 0.7 km E of Broom Creek and ca 1.2 km N of Patten Creek.-104.765642.42451500Locally common in a riparian community on a gentle slope of sandy clay loam with Pascopyrum smithii, Asclepias speciosa, and Rumex spp. Phenology: flowering & fruiting.RMRM283731 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.67-141Dale L. Taylor1967829241U.S.A.WyomingTetonYellowstone National Park: Central Plateau.-110.628844.59692500Fire scar, dry area. Phenology: flowering & fruiting.RMRM337633 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1577David L. Martin198172183U.S.A.WyomingBig HornDam at Sixmile Reservoir.-108.066344.15871329On the dam with Chenopodium, Iva axillaris, and Hordeum jubatum. Growing with poten. threatened Rorippa calycina. Phenology: flowering & fruiting.RMRM282714 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.66-17Donald L. Watson1966713194U.S.A.WyomingSublette3 mi SW of Pinedale.-109.901642.833Dry roadside. Phenology: buds.RMRM123788 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.s.n.Donald R. Sabin1930718199U.S.A.WyomingFremontRiverton.-108.380143.0251509Phenology: buds.RMRM578705 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.17932Erwin F. Evert1989727208U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: along the south side of the North Fork Shoshone River, opposite Newton Creek Campground.-109.76544.44731890Open, weedy area adjacent to marsh, prominent species include Cirsium arvense, Bromus inermis, and Urtica dioica ssp. gracilis. Phenology: flowering & fruiting.RMRM341751 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3302Erwin F. Evert1981727208U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: around Green Creek Road Reservoir, ca 1.5 mi S of U.S. Hwy 14, 16, and 20.-109.502644.44731951In wet soil. Phenology: flowering & fruiting.RMRM360914 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4250Erwin F. Evert1982715196U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: Buffalo Bill State Park.-109.247144.49441634Boat launch area. Phenology: flowering.RMRM649173 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3068Amy J. Roderick199782214U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: sand dunes W of County Road 351, ca 4.4 air mi SW of Seminoe Dam; ca 23.5 air mi NE of Sinclair.-106.948642.108518292006Sand dunes; open areas and knolls of Artemisia cana, Psoralidium lanceolatum, and Chrysothamnus sp. Phenology: flowering & fruiting.RMRM622645 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8230Erwin F. Evert198579190U.S.A.WyomingSheridanPowder River Basin: S of Story Fish Hatchery buildings and ponds.-106.917544.570116521664In Pinus ponderosa forest with understory of Acer glabrum and Crataegus columbiana; considerable evidence of past disturbance. Phenology: vegetative only.RMRM622646 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8817Erwin F. Evert1985726207U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: ca 0.5 mi W of the confluence of Elk Fork Creek and Cabin Creek, ca 8 mi S of U.S. Hwy 14, 16, and 20.-109.704644.36032164Spruce forest at edge of wet meadows. Phenology: vegetative only.RMRM622647 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9540Erwin F. Evert1985819231U.S.A.WyomingParkSoutheastern Absarokas: Stratford Ranch, near upper ranch house along east side of South Fork Shoshone River, ca 40 mi SW of Cody.-109.59644.140219812012Riparian areas along spring channels. Phenology: flowering & fruiting.RMRM268632 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.312Francis X. Jozwik1962817229U.S.A.WyomingNatronaCasper Mountain Area: below the road on Gothmore Loop.-106.330642.8061920Growing at the edge of a moist willow thicket. Up to 5 ft tall. Phenology: fruiting.RMRM643792 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.816Gillian Walford S. Gottschich and R. Bechloff1993720201U.S.A.WyomingParkShoshone National Forest: South Fork Shoshone River Valley: east side of South Fork Shoshone River, N of South Fork Ranger Station, 37 air mi SW of Cody.-109.594144.1551935Alluvial terrace shrub community wit Salix lasiandra and Poa pratensis. Gravelly alluvium. Phenology: flowering.RMRM382662 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10033Hollis Marriott1986616167U.S.A.WyomingFremontLysite Badlands: Pony Creek #1 gas line site just W of Moneta-Lysite Road, 3.3 road mi N of Moneta.-107.706543.20671737Bottom of wash in Artemisia tridentata-Stipa comata grasland; one small patch. Phenology: buds.RMRM4872 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.20J. F. Lewis18959244U.S.A.WyomingSheridanSheridan Experimental Farm.-106.756244.7972Phenology: flowering & fruiting.RMRM543995 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.174Jan Pollet1989716197U.S.A.WyomingPlatteAlong Cottonwood Creek, 30 road mi NW of Wheatland.-105.17542.29791616Hay meadow, irrigated when water in creek. Phenology: flowering & fruiting.RMRM544209 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.294Jan Pollet1989725206U.S.A.WyomingPlatteCottonwood Creek, 29 road mi NW of Wheatland.-105.214142.29791616Creek banks, live water. Phenology: flowering & fruiting.RMRM543997 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.354Jan Pollet198988220U.S.A.WyomingPlatteLaramie River, 12 road mi NE of Wheatland.-104.861742.12591432Creek banks and grassland. Phenology: flowering.RMRM543852 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.425Jan Pollet198988220U.S.A.WyomingPlatteLaramie River, 12 road mi NE of Wheatland.-104.861742.12591432South bank of river. Phenology: flowering & fruiting.RMRM543996 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.525Jan Pollet1989823235U.S.A.WyomingPlatteAlong Brush Creek, 17 road mi E of Wheatland.-105.108141.83451737Creek banks, dry, some standing water. Phenology: flowering & fruiting.RMRM543868 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.803Jan Pollet198998251U.S.A.WyomingPlatteDeadhead Creek, 6 road mi E of Wyo Hwy 34, 12 road mi SW of Wheatland.-105.169141.83521550Creekbanks and creekbed. Phenology: flowering & fruiting.RMRM276861 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.173Jay N. Holliday, Jr.1964724206U.S.A.WyomingAlbanyLaramie Range: Medicine Bow National Forest: Pole Mountain District: W of Eagle Rock, along the North Branch Middle Fork Lodgepole Creek.-105.374141.28232500Moist bottomland along the creek; on top of a beaver house mixed with C. flodmanii. Phenology: flowering & fruiting.RMRM262637 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.395Jean Finzel1959819231U.S.A.WyomingLaramie7 mi W of Cheyenne; 1 mi N of U.S. Hwy 30.-104.960241.09931829Shortgrass prairie. Phenology: flowering & fruiting.RMRM208802 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1653John F. Reed Mildred S. Reed1947819231U.S.A.WyomingTetonJackson Hole Wildlife Park.-110.525243.85442057Old garden site. Phenology: flowering & fruiting.RMRM395541 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.162L. Strack1987731212U.S.A.WyomingAlbany-106.119141.18182500Growing alongside the road on the east slope with numerous grasses. Phenology: flowering & fruiting.RMRM649175 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3169Amy J. Roderick199784216U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Haines Reservoir and ditch on County Road 640, ca 5.5 air mi SW of Saratoga; ca 14 air mi NW of Encampment.-106.88941.40342140Banks of ditch bordered by willow. Phenology: flowering.RMRM726767 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.967Melanie Arnett Carlos A. Popolizio, Donald L. Hazlett1996710192U.S.A.WyomingPlatteCamp Guernsey: east bank of North Platte River, ca 0.8 km N of U.S. Hwy 26 and ca 1.3 km S Hartville Canyon.1320Scattered on riverbank with gentle to steep slopes of gravelly loamy sand with Clematis ligusticifolia, Equisetum laevigatum, Salix, Scirpus, and Rumex sp. Phenology: flowering & fruiting.RMRM566325 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4676Neil Snow1989723204U.S.A.WyomingAlbanyNear U.S. Hwy 30-287 at crosing of Laramie River, ca 12 air mi SE of Rock River.-105.683141.54482195Moist meadows along river's edge. Phenology: flowering.RMRM293402 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.60R. E. Ries Darold W. Sabinske197377188U.S.A.WyomingCampbellBlack Thunder Strip Mining Area: North Prong of Thunder Creek and Little Thunder Creek.-105.249443.65761463Roadside; western wheatgrass, common Russian thistle, shallow clayey, loamy soil, shale (Shingle series, Shale). Phenology: flowering.RMRM649176 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3202Amy J. Roderick199784216U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Saratoga Lake E of Wyo Hwy 130, ca 1.2 air mi ENE of Saratoga; ca 18 air mi N of Encampment.-106.793441.47582065Wetlands and disturbed gravelly area surrounding lake. Phenology: flowering & fruiting.RMRM290608 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.71-18R. Owen Asplund197177188U.S.A.WyomingAlbanyLaramie.-105.576441.3119Periphery of LaPele Park. Phenology: buds.RMRM146913 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.765Reed C. Rollins1934820232U.S.A.WyomingFremontNear Lander.-108.730742.833Waste land. 1 of 2 Phenology: flowering & fruiting.RMRM146914 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.765Reed C. Rollins1934820232U.S.A.WyomingFremontNear Lander.-108.730742.833Waste land. 2 of 2 Phenology: flowering & fruiting.RMRM293263 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.94Richard F. Harner1974715196U.S.A.WyomingCampbellN of Gillette.1387Roadside. Phenology: flowering.RMRM279842 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.593Richard W. Scott196582214U.S.A.WyomingFremontAlong the Popo Agie River, just S of Lander.-108.716142.86021615Overflow channel of the river. Phenology: flowering & fruiting.RMRM616115 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9008Richard W. Scott1992826239U.S.A.WyomingFremontLittle Popo Agie Moraine.-108.58942.90552591Pond margins. Phenology: fruiting.RMRM293156 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.179Robert C. Gardner197186218U.S.A.WyomingAlbanyCounty Road 37, ca 3 mi S of junction with Wyo Hwy 230.-105.768541.1712195Common along roadside. Phenology: flowering & fruiting.RMRM293155 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.198Robert C. Gardner1971810222U.S.A.WyomingTetonGrand Teton National Park: road to Kelly, ca 5 mi E of U.S. 26/89.-110.664143.62531951Phenology: flowering & fruiting.RMRM594848 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5745Robert D. Dorn1994720201U.S.A.WyomingAlbany7.5 mi SE of Laramie.-105.431441.25362621Disturbed area with Trifolium, Achillea. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6413Robert D. Dorn1995813225U.S.A.WyomingHot SpringsBridger Creek; 1/4 mi N of Fremont County.-107.764443.47891829Meadow with Artemisia and Lupinus.RMRM600468 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6413Robert D. Dorn1995813225U.S.A.WyomingHot SpringsBridger Creek.-107.765643.48071829Meadow with Artemisia, Lupinus. Flowers purple. Phenology: flowering & fruiting.RMRM601079 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6459Robert D. Dorn1995814226U.S.A.WyomingBig Horn6 mi SSE of Manderson.-107.915644.19051219River bank with Hordeum, Iva xanthifolia. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6599Robert D. Dorn199592245U.S.A.WyomingLincoln1 mi E of LaBarge.-110.179842.2572073Shale slope with Chrysothamnus and Sarcobatus.RMRM600432 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6599Robert D. Dorn199592245U.S.A.WyomingLincoln1 mi E of La Barge.-110.179842.25762073Shale slope with Chrysothamnus, Sarcobatus. Corolla lavender Phenology: flowering & fruiting.RMRM681432 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8488Robert D. Dorn2000810223U.S.A.WyomingCampbellWright.-105.496443.75711524Edge of cattail ditch with Poa and Scirpus. Phenology: flowering & fruiting.RMRM681431 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8489Robert D. Dorn2000810223U.S.A.WyomingJohnsonPowder River at I-90.-106.15344.21451219Roadside ditch with Populus and Elymus. Phenology: buds.RMRM681430 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8491Robert D. Dorn2000810223U.S.A.WyomingSheridanGoose Creek just E of Kendrick Park, Sheridan.-106.962344.80091158Moist unstable bank above creek with Populus deltoides and Typha. Phenology: fruiting.RMRM297721 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.32Robert Luce1975513133U.S.A.WyomingGoshenTable Mountain Wildlife Unit.-104.1441.856312191250Phenology: buds.RMRM339145 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4727Robert W. Lichvar1981810222U.S.A.WyomingLaramieF. E. Warren Air Force Base: Diamond Creek.-104.880441.14421859Prarie swale along creek with Euphorbia and Guara. Phenology: fruiting.RMRM304733 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.R--1013Ronald G. Schreibeis197788220U.S.A.WyomingWashakieCa 12.5 mi SW of Worland along Little Gooseberry Creek.-108.159243.9394Common in riparian zone near reservoir. Phenology: fruiting.RMRM649177 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3336Amy J. Roderick199786218U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Fort Steele State Recreation Area, ca 6.6 air mi NW of Walcott Junction; ca 8.4 air mi E of Sinclair.-106.954141.77661981Grassy area near river shaded by cottonwoods. Phenology: flowering & fruiting.RMRM209069 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.s.n.Wilbur T. Brettell1948415106U.S.A.WyomingLaramieJ. G. Lins farm, Divide community.Phenology: vegetative only.RMRM364999 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.116William C. Edwards1983719200U.S.A.WyomingLaramieCampus of Laramie County Community College, SE of Cheyenne.-104.783141.10641859Short grass prairie. Phenology: flowering.RMRM544555 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.203Windsor Copley1989821233U.S.A.WyomingUintaMountain View.-110.229641.17822073Disturbed area. Dry, loamy, slightly alkaline soil. Phenology: flowering & fruiting.RMRM345518 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.889Yoshiko Akashi1983919262U.S.A.WyomingAlbanyMedicine Bow National Forest: Cinnabar Park.-106.218241.22882926Burned forest. Phenology: buds.RMRM711826 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.73831Ronald L. Hartman2001815227U.S.A.New MexicoSandovalValles Caldera National Preserve: Jemez Mountains: upper drainage of East Fork Jemez River S from main ranch road at south tip of Cerro del Medio to NM Hwy 4.-106.44166735.85833322862317Meadows and streamside. Phenology: flowering.RMRM556045 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1934Robert S. Kirkpatrick1983811223U.S.A.WyomingParkAbsaroka Mountains: ca 45 air mi SW of Cody, in the vicinity of the junction of the South Fork of the Shoshone River and Needle Creek.-109.640344.042134Dry lodgepole pine forest. Phenology: flowering & fruiting.RMRM556047 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2479Robert S. Kirkpatrick1983820232U.S.A.WyomingParkAbsaroka Mountains: ca 19 mi SSW of Cody, S of Meeteetse Creek, ca 1 mi S of Foster Reservoir.-109.184144.261925002560Big sage grasslands; disturbed areas along the road. Phenology: flowering & fruiting.RMRM556048 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6107Robert S. Kirkpatrick1984825238U.S.A.WyomingParkAbsaroka Mountains: ca 17 air mi SSE of Cody, upper end of Carter Creek ca 1 mi SE of Hidden Lake.-109.204244.319825002682Picea engelmannii and Abies lasiocarpa forest; weedy areas along road. Phenology: flowering & fruiting.RMRM756345 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.51510B. E. Nelson200087220U.S.A.ColoradoRouttNorth-central Colorado: Park Range: along a tributary of Tennessee Creek E and below Shield Mountain, ca 6.5-7 air mi NW of Columbine; ca 32.5-33 air mi NNW of Steamboat Springs.-107.04440.924124392530Old beaver ponds and dams. Phenology: flowering.RMRM756344 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.51564B. E. Nelson200087220U.S.A.ColoradoRouttNorth-central Colorado: Park Range: along Bedrock Creek ca 2 air mi NE of Shield Mountain, ca 7 air mi NW of Columbine; ca 33.5 air mi NNW of Steamboat Springs.-107.025140.938423622378Stream bottom with willows in aspen forest. Phenology: flowering.RMRM756343 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.51706B. E. Nelson200088221U.S.A.ColoradoRouttNorth-central Colorado: Elkhead Mountains: near the head of Elkhead Creek at the north end of California Park, ca 1.5 air mi E of Saddle Mountain; ca 22.5 air mi NE of Hayden.-107.138640.809125152560Meadows along the stream and old beaver ponds. Phenology: flowering.RMRM756342 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.51808B. E. Nelson2000814227U.S.A.ColoradoMoffatNorth-central Colorado: Elkhead Mountains: on a point ca 1.5 air mi WSW of Sand Point and S of Fourmile Creek drainage, ca 21.5 air mi NNE of Craig.-107.441340.823527312820Open meadows in spruce-fir-aspen forest. Phenology: flowering.RMRM756341 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.51864B. E. Nelson2000815228U.S.A.ColoradoMoffatNorth-central Colorado: Elkhead Mountains: around Freeman Reservoir and along Little Cottonwood Creek below, ca 18.5 air mi NNE of Craig.-107.422440.76626582670Reservoir shore and adjacent meadows. Phenology: flowering & fruiting.RMRM756340 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.51996B. E. Nelson2000817230U.S.A.ColoradoJacksonNorth-central Colorado: Park Range: below Rabbit Ears Peak on the north and east sides, ca 23 air mi W of Rand; ca 27 air mi SW of Walden.-106.603940.421629873079Old (40-50 years?) clearcuts in spruce-fir forest with limited regeneration. Phenology: flowering.RMRM756339 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.52011B. E. Nelson2000817230U.S.A.ColoradoJacksonNorth-central Colorado: Park Range: below Rabbit Ears Peak on the north and east sides, ca 23 air mi W of Rand; ca 27 air mi SW of Walden.-106.603940.421629873079Old (40-50 years?) clearcuts in spruce-fir forest with limited regeneration. Phenology: flowering.RMRM756316 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.52054B. E. Nelson200096250U.S.A.ColoradoJacksonNorth-central Colorado: Rabbit Ears Range: along Middle Fork Arapaho Creek on Forest Road 700, ca 1.5 air mi W of Arapaho Ridge, ca 10.5 air mi SW of Rand; ca 24 air mi S of Walden.-106.358540.387228902902Dry meadow along creek. Phenology: flowering.RMRM756315 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.52114B. E. Nelson200096250U.S.A.ColoradoJacksonNorth-central Colorado: Rabbit Ears Range: Slack-Weiss Reservoir, ca 2 air mi NW of the north end of Arapaho Ridge, ca 10 air mi W of Rand; ca 20.5 air mi S of Walden.-106.358540.43062734Open grassy areas above the reservoir. Phenology: flowering & fruiting.RMRM756314 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.68890Ronald L. Hartman Sarah Nunn2000727209U.S.A.ColoradoJacksonNorth-central Colorado: Park Range: N-S trail just off Fryingpan Trail, 4-5 air mi S of Big Creek Lakes, ca 18 air mi NW of Walden.-106.574140.85022652Forested edge. Phenology: flowering.RMRM756313 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.70016Ronald L. Hartman2000817230U.S.A.ColoradoJacksonNorth-central Colorado: Park Range: Newcomb Park Trail, 0.5-2.5 trail mi W of trail head (to granitic domes and Newcomb Creek angling NW), ca 20-21 air mi SW of Walden.-106.642640.589926822713Meadows and woodland, pond edges. Phenology: flowering.RMRM761396 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.54812B. E. Nelson2001730211U.S.A.ColoradoRouttNorth-central Colorado: Park Range: Hinman Lake and vicinity to Hinman Creek, ca 1.5 air mi N of the Elk River, ca 6.5 air mi NE of Clark; ca 20 air mi N of Steamboat Springs.-106.835440.765824982500Aspen woodlands. Phenology: flowering.RMRM761395 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.54898B. E. Nelson2001730211U.S.A.ColoradoRouttNorth-central Colorado: Park Range: Boulder Park along Forest Road 400 and the Elk River, ca 8 air mi NE of Clark; ca 19.5 air mi N of Steamboat Springs.-106.797540.76582378Roadside and adjacent stony flats. Phenology: flowering & fruiting.RMRM761394 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.54925B. E. Nelson2001731212U.S.A.ColoradoRouttNorth-central Colorado: Elkhead Mountains: Georges Gulch at County 52 E, ca 3 air mi N of The Sleeping Giant, ca 12 air mi NW of Steamboat Springs.-106.986740.60782121Roadside and right of way in rolling open hills. Phenology: flowering & fruiting.RMRM761393 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.55186B. E. Nelson200186218U.S.A.ColoradoRouttNorth-central Colorado: Park Range: northern part of Green Ridge on Forest Road 285, ca 7-7.5 air mi SE of Oak Creek; ca 4.5 air mi NE of Yampa.-106.858840.201127922878Small meadows in mixed conifer forest. Phenology: flowering.RMRM764410 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.55368B. E. Nelson200188220U.S.A.ColoradoRouttNorth-central Colorado: Park Range: along old logging road S and E above Rock Creek, ca 1.5-2.5 air mi ENE of Long Park, ca 15-16 air mi SE of Yampa.-106.648340.053826822713Clearcut. Phenology: flowering.RMRM761392 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.55549B. E. Nelson200188220U.S.A.ColoradoGrandNorth-central Colorado: Park Range: along old logging road between Jolley and Horse creeks, ca 4 air mi WSW of Gore Pass, ca 12.5 air mi W of Kremmling.-106.629140.053826822759Old clearcut. Phenology: flowering & fruiting.RMRM761391 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.55606B. E. Nelson2001813225U.S.A.ColoradoRouttNorth-central Colorado: Elkhead Mountains: along South Fork Slater Creek, ca 1 1/4-1 3/4 air mi N of Lost Park, ca 22-22.5 air mi N of Hayden.-107.289440.808925122652Moist to dry meadow on steep clay slope. Phenology: flowering.RMRM761390 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.56004B. E. Nelson2001820232U.S.A.ColoradoJacksonNorth-central Colorado: Rabbit Ears Range: along the Continental Divide ca 0.5-1 air mi NW of Chimney Rock, ca 8 air mi ESE of Muddy Pass; ca 27.5 air mi SSW of Walden.-106.436240.358328902987Old logged area in mixed conifer-aspen forest. Phenology: flowering & fruiting.RMRM761389 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.56033B. E. Nelson2001821233U.S.A.ColoradoRouttNorth-central Colorado: Park Range: along Forest Road 443 and Trail 1164 between Three Island Creek and South Fork Elk River, ca 19.5 air mi NNE of Steamboat Springs.-106.724140.748725602743Roadside and old logged area. Phenology: flowering & fruiting.RMRM761388 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.56177B. E. Nelson2001822234U.S.A.ColoradoRouttNorth-central Colorado: Park Range: along Forest Road 441 to Floyd Peak above Reed Creek, ca 5-6 air mi E of Clark; ca 15 air mi N of Steamboat Springs.-106.816440.69427132804Logged spruce-fir or mixed conifer forest. Phenology: flowering & fruiting.RMRM761387 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.56267B. E. Nelson2001827239U.S.A.ColoradoJacksonNorth-central Colorado: Rabbit Ears Range: along East Fork Arapaho Creek, ca 1.5-2 air mi W of Arapaho Ridge, ca 9 air mi SW of Rand; ca 24 air mi S of Walden.-106.322540.387329572987Old clearcut with open lodgepole pine regeneration. Phenology: flowering.RMRM761386 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.56357B. E. Nelson2001828240U.S.A.ColoradoRouttNorth-central Colorado: Park Range: along Forest Spur Road 471.1 from Forest Road 471 to upper Long Draw, NE of Mount Candy, ca 2.5 air mi SE of Clark; ca 14 air mi N of Steamboat Springs.-106.873240.679625972670Clearcut with aspen regeneration. Phenology: flowering & fruiting.RMRM761385 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.56409B. E. Nelson2001829241U.S.A.ColoradoJacksonNorth-central Colorado: North Park: along County Road 6 in the vicinity of Trappers Gulch at the south end of Battle Ridge, ca 11 air mi WNW of Cowdrey; ca 17 air mi NW of Walden.-106.514640.893925122536Roadside on rolling sagebrush steppe. Phenology: flowering & fruiting.RMRM761384 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.73609Ronald L. Hartman200186218U.S.A.ColoradoJacksonNorth-central Colorado: Medicine Bow Mountains: Forest Road 889, 6.5 road mi S of Colo Hwy 127, at intersection with Forest Road 889.1B.-106.209840.95227132743Lodgepole pine forest and cleancuts. Phenology: flowering.RMRM649181 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3504Amy J. Roderick1997812224U.S.A.WyomingCarbon[location and coordinates withheld]2192Moist area along river shaded by cottonwood, willow, and birch. Phenology: flowering & fruiting.RMRM768902 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.60013B. E. Nelson2003810222U.S.A.New MexicoSandovalValles Caldera National Preserve: Jemez Mountains: ridge S and E of Valle Jaramillo, ca 1 air mi NW of Cerro Pinyon, ca 12 air mi W of Los Alamos.-106.512435.89932865Clearcut Douglas fir forest with mostly blue spruce/white fir regeneration. Phenology: flowering.RMRM827200 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2499David Scott Nancy Bockino2006730211U.S.A.WyomingTetonGrand Teton National Park and Vicinity: Jackson Hole: near Cow Lake, ca 3 air mi WSW of Moran; ca 14 air mi NE of Moose.-110.56543.82812086Dry banks of pond. Phenology: flowering & fruiting.RMRM827199 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2730David Scott Chuck Schaap200685217U.S.A.WyomingTetonGrand Teton National Park and Vicinity: John D. Rockefeller Jr. Memorial Parkway: near Glade Creek, ca 23 air mi NW of Moran; ca 32 air mi N of Moose.-110.731144.1062184Burned area dominated by Calamagostis rubescens. Phenology: flowering & fruiting.RMRM827198 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2830David Scott Andrew Bishop200688220U.S.A.WyomingTetonGrand Teton National Park and Vicinity: Jackson Hole: near Two Ocean Lake, ca 4 air mi N of Moran; ca 19.5 air mi NNE of Moose.-110.533943.90182126Carex dominated seasonal wetland with scattered willows. Phenology: buds.RMRM827197 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3149David Scott Tacheeni Scott2006816228U.S.A.WyomingTetonBridger-Teton National Forest: Teton Wilderness: near Bailey Meadows, ca 14 air mi NNW of Moran; ca 25.5 air mi NNE of Moose.-110.618344.02262375West-facing slope with mixed conifer patches and herbaceous meadows. Phenology: flowering.RMRM827196 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3307David Scott Nancy Bockino, Tacheeni Scott2006821233U.S.A.WyomingTetonBridger-Teton National Forest: Teton Wilderness: near Coulter Creek, ca 14.5 air mi NNE of Moran; ca 30.5 air mi NE of Moose.-110.426644.0462548Pond shore surrounded by scattered Picea engelmannii. Phenology: buds.RMRM649178 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3589Amy J. Roderick1997812224U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Alpha Ditch along County Road 101, ca 3.5 air mi S of Elk Mountain townsite; ca 10.7 air mi WNW of Arlington.-106.41141.63512314Semi-moist ditch associated with Phleum pratense and sparse stands of cottonwood, willow, and birch. Phenology: flowering & fruiting.RMRM837219 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5305David Scott Klara Varga200789221U.S.A.WyomingTetonGrand Teton National Park and Vicinity: Jackson Hole: on west shore of Jackson Lake near Wilcox Point, ca 15.5 air mi NW of Moran; ca 23.5 air mi N of Moose.-110.716243.99392067Salix wolfii bottomland. Phenology: flowering.RMRM837218 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5527David Scott Ronald L. Hartman2007815227U.S.A.WyomingTetonGrand Teton National Park and Vicinity: John D. Rockefeller Jr. Memorial Parkway: near Huckleberry Hot Springs, ca 1 air mi NW of Flagg Ranch; ca 21.5 air mi NNW of Moran.-110.687744.11552085Warm and hot springs and creeks with adjacent wetlands. Phenology: flowering.RMRM837217 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5684David Scott Klara Varga2007821233U.S.A.WyomingTetonGrand Teton National Park and Vicinity: Teton Range: in Owl Canyon, ca 19.5 air mi NW of Moran; ca 25 air mi NNW of Moose.-110.806744.00222240Montane willow bottomland with stream. Phenology: flowering & fruiting.RMRM837216 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.86812Ronald L. Hartman2007821233U.S.A.WyomingTetonTarghee National Forest: Ashton Ranger District: Winegar Hole Wilderness: from Rock Lake NW towards Winegar Creek.-110.96244.1241986Wetlands. Phenology: flowering.RM647384 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2089Neil Snow1987816228U.S.A.WyomingTetonSouthwestern Absarokas: ca 9.5 air mi E of Moran Juction, along "Rosie's Ridge" (Forest Road 30060).-110.323743.82292256Open sage mixed with lodgepole pine and aspen. Phenology: fruiting.RMRM647385 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3608Neil Snow1988713195U.S.A.WyomingParkSouthwestern Absarokas: Houlihan Creek drainage, ca 29 air mi SW of Cody.-109.503244.302322862591Pseudotsuga forest.RMRM647386 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3625Neil Snow1988713195U.S.A.WyomingParkSouthwestern Absarokas: ca 31 air mi SW of Cody; along the Shoshone River on the TE Ranch.-109.503244.27332042Cottonwood bottoms along river.RMRM649179 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3634Amy J. Roderick1997814226U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Pathfinder Reservoir: National Wildlife Refuge N of County Road 410, ca 22 air mi NE of Three Forks Junction.-107.061942.51121785Sandy grassland at rivers edge. Phenology: flowering & fruiting.RMRM768901 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78709Ronald L. Hartman Brian Jacobs2003818230U.S.A.New MexicoSandovalValles Caldera National Preserve: Jemez Mountains: Rito de los Indios, 1.8 air mi NNE of Pipeline Road.-106.47421735.9941332801Felsenmeer with stream, high flow; roadside. Phenology: flowering.RMRM99231 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.536Arthur C. McIntosh1924729211U.S.A.South DakotaPenningtonRapid City, Tourist Park.-103.220444.0835975Clay soil along railroad. Phenology: flowering & fruiting.RMRM346252 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7912Gary E. Larson1982715196U.S.A.South DakotaBennettLacreek National Wildlife Refuge, Pool 5.-101.551143.1062919Road bank along dike; in marsh; abundant. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.12125Hollis Marriott Patches2000726208U.S.A.South DakotaPenningtonBlack Hills: Black Elk Wilderness, upper Grizzly Bear Creek in Pine Creek Natural Area just upstream from Grizzly Bear Creek Trail (#7), ca 1.4 air mi E of Harney Peak Lookout.-103.501743.86321661Wet meadows in old drying beaver ponds.RMRM698612 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.12125Hollis Marriott Patches2000726208U.S.A.South DakotaPenningtonBlack Hills: Black Elk Wilderness: upper Grizzly Bear Creek in Pine Creek Natural Area just upstream from Grizzly Bear Creek Trail (#7), ca 1.4 air mi E of Harney Peak Lookout.-103.501743.86321661Wet meadows in old drying beaver ponds. Phenology: flowering.RMRM718904 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.0044Brian F. Jacobs Elaine Jacobs2001815227U.S.A.New MexicoSandovalValles Caldera National Preserve: Valle Grande, headwaters of East Fork Jemez River. south side of Cerro Medio, along Road D, S of junction with Road F.-106.428635.8917Phenology: buds.RMRM718919 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.0045Brian F. Jacobs Elaine Jacobs2001815227U.S.A.New MexicoSandovalValles Caldera National Preserve: Valle Grande, headwaters of East Fork Jemez River. south side of Cerro Medio, along Road D, S of junction with Road F.-106.496535.8557Phenology: flowering.RMRM365376 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9871Hollis Marriott1985725206U.S.A.South DakotaCusterJewel Cave National Monument: seep in draw E of Visitors Center and above cliff.-103.825843.73111646Phenology: flowering.RMRM718916 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.0049Brian F. Jacobs Elaine Jacobs2001830242U.S.A.New MexicoSandovalValles Caldera National Preserve: Alamo Canyon, ca 1/2 mi above junction with Sulphur Creek, and above small cattle pond.-106.588435.9152621Along road. Phenology: flowering.RMRM718915 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.0054Brian F. Jacobs Elaine Jacobs2001830242U.S.A.New MexicoSandovalValles Caldera National Preserve: Valle Seco.-106.498235.91762621Wet meadows. Phenology: buds.RMRM718906 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.0072Brian F. Jacobs2001915258U.S.A.New MexicoSandovalValles Caldera National Preserve: Valle Grande, headwaters of East Fork Jemez River, south side of Cerro Medio, off Road D, ca 2.5 mi S of junction with Road F on spur road that leads S across Valle to NM Hwy 4.-106.44335.872621Phenology: flowering.RMRM520962 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.297Stephen Van Sickle1982814226U.S.A.South DakotaJonesMurdo Dam.-100.722343.9188667Shoreline; common. Phenology: flowering.RMRM649180 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3779Amy J. Roderick1997817229U.S.A.WyomingCarbon[location and coordinates withheld]2088Big sagebrush draw in surrounding sagebrush grasslands; dry sandy soil. Phenology: flowering & fruiting.RMRM651296 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1996B. A. Packer J. Brondum and T. McGowan1997722203U.S.A.WyomingAlbanyLaramie Range: Johnson Reservoir, ca 27 air mi NE of Laramie.-105.380141.77619052000Granite outcrop. Phenology: flowering & fruiting.RMRM651297 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2268B. A. Packer J. Brondum and T. McGowan1997728209U.S.A.WyomingAlbanyLaramie Range: along unnamed creek, ca 18.5 air mi SW of Esterbrook; ca 21.5 air mi SW of Douglas.-105.624642.122921792201Granite outcrops. Phenology: flowering & fruiting.RMRM651298 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2364B. A. Packer J. Brondum and T. McGowan1997729210U.S.A.WyomingAlbanyLaramie Range: Baldy Knob, ca 25 air mi S of Douglas.-105.332442.284121642262Tree blown hillside. Phenology: flowering & fruiting.RMRM651299 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2442B. A. Packer J. Brondum and T. McGowan1997730211U.S.A.WyomingConverseLaramie Range: along unnamed branch of Indian Creek, ca 19 air mi SW of Douglas.-105.430342.427518991920Hillside Phenology: flowering & fruiting.RMRM651300 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3014B. A. Packer J. Brondum and T. McGowan1997820232U.S.A.WyomingAlbany[location and coordinates withheld]25002545Roadside Phenology: flowering & fruiting.RMRM651301 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3043B. A. Packer J. Brondum and T. McGowan1997821233U.S.A.WyomingAlbany[location and coordinates withheld]2417Roadside. Phenology: flowering & fruiting.RM651302 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3126B. A. Packer J. Brondum and T. McGowan1997821233U.S.A.WyomingAlbanyLaramie Range: Leazenby Lake, ca 8.5 air mi S of Laramie off of U.S. Hwy 287.-105.583441.182222402262Lakeside. Phenology: flowering & fruiting.RMRM651303 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3164B. A. Packer J. Brondum and T. McGowan1997824236U.S.A.WyomingAlbanyLaramie Range: La Bonte Canyon: La Bonte Creek, ca 16 air mi W of Esterbrook.-105.683142.3832189Along creek. Phenology: flowering & fruiting.RMRM718622 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.341B. Koblitz2000626178U.S.A.ColoradoLarimerRed Feather Lakes Road, ca 5 mi W from its intersection with U.S. Hwy 287.-105.28833340.791829Roadside, sandy soil. Phenology: flowering & fruiting.RMRM718618 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.383B. Koblitz2000628180U.S.A.ColoradoLarimerPhantom Canyon Preserve: ca 25 mi N of Fort Collins along U.S. Hwy 287, along E side of North Fork Cache la Poudre River, Preserve "Reach 6".-105.29666740.8466671839Disturbed area between river and upland shrubs. Phenology: flowering.RMRM651328 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.41440B. E. Nelson1997715196U.S.A.WyomingConverseLaramie Range: along Horseshoe Creek just above Trail Creek, ca 6 air mi N of Laramie Peak, ca 6 air mi SW of Esterbrook; ca 28 air mi S of Douglas.-105.449942.355819391975Disturbed areas. Phenology: flowering & fruiting.RMUSFS475922 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.197E. R. Ware1932101275U.S.A.ColoradoGarfieldWhite River National Forest: Mitchell Creek.-107.362239.571418295 degree south slope, rocky clay loam, woodland, with Populus, Alnus and Poa. Phenology: flowering & fruiting.RMRM81865 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.907Edwin B. Payson1914811223U.S.A.ColoradoMontroseMontrose.1768Along ditches. Phenology: fruiting.RMRM159133 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4399George E. Osterhout191079190U.S.A.ColoradoWeldNew Windsor.Phenology: flowering & fruiting.RMRM651329 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.42650B. E. Nelson1997813225U.S.A.WyomingConverse[location and coordinates withheld]1713Open areas among the thickets in the creek bottom. Phenology: flowering & fruiting.RMRM651330 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.42685B. E. Nelson1997814226U.S.A.WyomingConverseLaramie Range: Downey Park just below School Section Mountain and W of Old Fort Fetterman or County Road 16, ca 18 air mi WNW of Esterbrook; ca 25 air mi SW of Douglas.-105.705442.48222562268Marshes and wet meadows of old beaver ponds. Phenology: flowering & fruiting.RMRM551520 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5281Janet Wingate Richards and Edwards198884217U.S.A.ColoradoLarimerRocky Mountain National Park: Moraine Park.2474Flat, open area; moist soil with Phleum pratense, Thermopsis divaricarpa and Salix sp. Phenology: flowering & fruiting.RMRM793983 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.14L. Blay N. E. Hastings2004811224U.S.A.ColoradoArapahoeBuckley Air Force Base: along Toll Gate Creek; northwest end of transect 990 m NNE of the southwest corner of the installation. 521189E 4393488N.1697Edge of cottonwood/willow (riparian) on up to 10 degrees slope on silt-like loam; with Salix exigua, Ribes aureum, Asclepias speciosa, Helianthus annuus, Melilotus officinalis, Glycyrrhiza lepidota. Phenology: flowering.RM651331 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.42899B. E. Nelson1997817229U.S.A.WyomingConverseLaramie Range: along Roaring Fork between Twin Peaks and Squaw Mountain, ca 0.5-2 air mi W of LaPrele Creek and Cold Springs or County Road 24, ca 24-25.5 WNW of Esterbrook; ca 26.5 air mi S of Glenrock.-105.84342.48223532530Stream bank and adjacent areas. Phenology: flowering & fruiting.RMRM651332 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.42987B. E. Nelson1997819231U.S.A.WyomingNatronaLaramie Range: along Smith Creek below Otter Creek at the east end of Muddy Mountain on Smith Creek or County Road 607, ca 16 air mi SE of Casper.-106.157642.656918841981Open slopes with scattered large limestone boulders and sagebrush and scattered mountain shrub. Phenology: flowering & fruiting.RMRM793984 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.193N. E. Hastings C. Bern2005629180U.S.A.ColoradoArapahoeBuckley Air Force Base: south end of transect 845 m E of southwest corner of the installation. 521979E 4392505N to 521830N 4392675E.1709Level to rolling shortgrass prairie on clay loam; with Rosa arkansana, Verbascum thapsus, Convolvulus arvensis, Nassella viridula, Rumex crispus, Poa, Bromus spp. Phenology: flowering.RMRM755178 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7608Neil Snow S. Snow199881213U.S.A.ColoradoRouttCO Hwy 34, 4.9 mi road mi E of its junction with CO Hwy 131 in Toponas.-106.72083340.0861112660Gravelly roadside. Phenology: flowering & fruiting.RMRM395350 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1493Patricia P. Douglas1986826238U.S.A.ColoradoConejosNear the confluence of Bear Creek and Conejos River, 1 mi W of Aspen Glade Campground.2682Moist meadow with Agrostis, Rumex, Erigeron and Oenothera. Phenology: fruiting.RMRM526668 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1805Patricia P. Douglas1987815227U.S.A.ColoradoConejos1 mi N of Empedrado Lake, 2 mi E of Acascosa Lake.43250Wet, open meadow of gentle western exposure with Poa, Bromus and Eleocharis. Phenology: flowering & fruiting.RMRM526650 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1843Patricia P. Douglas1987821233U.S.A.ColoradoConejos4 mi WNW of Fox Creek, 5 mi ENE of Spruce Hole.-106.263337.0848838On steep SSW facing ridge with Pseudotsuga, Artemisia and Brickellia. Phenology: flowering & fruiting.RMUSFS475923 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.PL-47Paul C. Lemon1938822234U.S.A.ColoradoFremontSan Isabel National Forest.-105.665938.31992134Loam, roadside. Phenology: flowering & fruiting.RMRM717946 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10927Robert Merril King1999624175U.S.A.ColoradoBoulderCity limits of Hygiene, ca 1 mi S of CO Hwy 66.40.2016671580Roadside. Phenology: flowering & fruiting.RMRM717948 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11066Robert Merril King Robert M. Garvey199985217U.S.A.ColoradoEl PasoCa 5 mi W of Colorado Springs on Gold Camp Road.-104.88722238.827222623Phenology: fruiting.RMRM717947 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11143Robert Merril King Robert M. Garvey1999916259U.S.A.ColoradoWeldCa 11 mi NW of Fort Lupton.-104.93666740.2069441575Phenology: fruiting.RMRM299522 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2520Ronald L. Hartman1968729211U.S.A.New MexicoColfaxPhilmont Scout Ranch, near Cimarron: Apache Creek Trail, between Turkey Creek and Bear Creek.-105.1384936.39322865Along road at edge of meadow. Phenology: fruiting.RMRM526358 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3249Steve L. O'Kane1987711192U.S.A.ColoradoConejosRio Grande River where it passes the Pinyon Hills.2268Riverine alluvium, on banks of river with Agropyron, Rhus and Salix. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2101Thomas Cramer1994720201U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: vicinity of Coal Creek, ca 14 air mi N of Border Junction.-110.91166742.40666720732439Sagebrush hills with aspen groves. Phenology: flowering.RM631641 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2763Thomas Cramer199484216U.S.A.WyomingLincolnGreen River Basin: east end of Fontenelle Gap, ca 15 air mi W of Fontenelle Reservoir.-110.41888942.0847222134Creekside meadows, willow thickets, and rockslides. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3753Thomas Cramer1994814226U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Hams Fork River, ca 1 air mi N of Frontier.-110.52861141.8302781835Riverside meadows, sagebrush, and willows. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3848Thomas Cramer1994814226U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Lake Viva Naughton, ca 13 air mi NNW of Kemmerer.-110.65666741.9658332210Reservoir edge, meadows, and sagebrush. Phenology: flowering.RMRM652178 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10044Stuart Markow1992729211U.S.A.IdahoClarkTarghee National Forest: Beaverhead Range: along Crooked Creek in Crooked Creek Canyon at E boundary of National Forest, ca 25 air mi NW of Dubois.-112.725944.25271935Riparian dominated by Ribes, Rosa, and grasses. Phenology: flowering & fruiting.RMRM652177 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10266Stuart Markow199284217U.S.A.IdahoClarkTarghee National Forest: Beaverhead Range: ridge between Gallagher Canyon and Blue Canyon, ca 27 air mi W of Dubois.-112.745944.15172560Coniferous forest dominated by pinus flexilis and Pseudotsuga menziesii, scattered Artemisia. Phenology: flowering & fruiting.RMRM652176 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10365Stuart Markow199286219U.S.A.IdahoClarkTarghee National Forest: Western Centennial Mountains: roadside along Pleasant Valley Creek, ca 8 air mi NW of Spencer.-112.572944.410321952256Mostly roadside weeds and grasses. Phenology: flowering & fruiting.RMRM652175 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10435Stuart Markow199289222U.S.A.IdahoClarkTarghee National Forest; Centennial Mountians: Taylor Creek area, ca 15 air mi NW of Island Park.-111.646644.49631768Clearing in confierous forest, dominated by grasseaand forbs. Phenology: flowering & fruiting.RMRM652163 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10593Stuart Markow1992812225U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: Eccles Road, W of intersection with Mesa Falls Road, ca 16.5 air mi NE of Ashton.-111.405344.323918591890Clearcut in Pinus contorta, dominated by forbs and grasses, with scattered Pinus contorta regeneration. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10720Stuart Markow1992814227U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: between Mack's Inn and Latham Spring, ca 14 air mi SW of West Yellowstone, Montana.-111.225344.481120122073Coniferous forest dominated by Pinus contorta and Pseudotsuga menziesii.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10792Stuart Markow1992817230U.S.A.IdahoFremontTarghee National Forest: Henrys Lake Mountains: along Twin Creek, ca 10 air mi SW of West Yellowstone, Montana.-111.306344.612720122073Coniferous forest dominated by Pseudotsuga menziesii and Symphoricarpos.RMRM652160 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10931Stuart Markow1992819232U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: intersection of U.S. Hwy 20 and Sheep Falls Rd., ca 8 air mi N or Ashton.-111.445544.1941859Clearcut Pinus contorta with mostly weedy forbs and grasses, scattered Pinus contorta. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5014Stuart Markow199185217U.S.A.IdahoTetonTarghee National Forest: East Slope Big Hole Mountains: Patterson Creek Trail, ca 7 air mi NW of Victor.-111.231543.629518902012Coniferous forest adjacent to creek, dominated by Abies lasiocarpa, Pinus contorta, and Picea engelmannii, some riparian.RMRM652234 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5189Stuart Markow199187219U.S.A.WyomingTetonTarghee National Forest: West Slope Teton Range: Green Lakes Trail, ca 13 air mi NW of Tetonia, Idaho.-110.94643.84921342378Coniferous forest dominated by Abies lasiocarpa and Picea pungens, with many clearings and some riparian. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5606Stuart Markow1991811223U.S.A.WyomingTetonTarghee National Forest: East Slope Snake River Range: Divide Trail, S of Mosquito Creek Road.-110.923343.42819512012Roadside and adjacent coniferous forest, dominated by Pinus contorta, Abies lasiocarpa, and Picea engelmannii, with some riparian.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5748Stuart Markow1991813225U.S.A.IdahoFremontTarghee National Forest: West Slope Teton Range: Porcupine Creek Campground and surrounding area.-111.224144.09316761737Coniferous forest dominated by Pinus contorta, with openings and adjacent roadside, and some riparian.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5901Stuart Markow1991815227U.S.A.IdahoTetonTarghee National Forest: West Slope Teton Range: Pinochle Road, 0.5 mi E of entrance to National Forest.-111.089743.904720122103Coniferous forest dominated by Pinus contorta, Pseudotsuga menziesii, and Prunus virginiana.RMRM652231 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6190Stuart Markow1991819231U.S.A.WyomingTetonTarghee National Forest: West Slope Teton Range: trail from Grand Targhee Ski Area to Miles Creek Trail, ca 10 air mi NE of Driggs, Idaho.-110.954243.792223782439Coniferous forest and roadside, dominated by Abies lasiocarpa, Picea engelmannii and Lonicera utahensis. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6383Stuart Markow1991819231U.S.A.WyomingTetonTarghee National Forest: West Slope Teton Range: Game Creek Trail, ca 4 air mi SE of Victor, Idaho.-111.053843.60519512012Coniferous forest, dominated by Picea engelmannii and Abies lasiocarpa with some areas of roadside weeds and riparian.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9299Stuart Markow1992713195U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau: Island Park, along small creek ca 50 yds N of Buffalo River; ca 300 yds W of U.S. Hwy 20.-111.387244.42261920Swampy, sparsely forested area, dominated by Carex, grasses, and forbs, with scattered Pinus contorta and Salix.RMRM652212 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9605Stuart Markow1992720202U.S.A.IdahoFremontTarghee National Forest: Island Park Plateau; along Warm River, just E of Union Pacific Railroad bed, ca 7 air mi SE of Island Park.-111.304644.338318901920Adjacent to river in logged area dominated by forbs and grasses, some Pinus contorta. Phenology: flowering & fruiting.RMRM652211 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9613Stuart Markow1992720202U.S.A.IdahoClarkTarghee National Forest: Centennial Mountains: Bear Gulch at head of trail to Mule Meadows and Table Mountain, ca 7 air mi NW of Kilgore.-111.988944.4822103Along roadside adjacent to coniferous forest dominated by Pseudotsuga menziesii and Pinus contorta, some Picea englemannii. Phenology: flowering & fruiting.RMRM652179 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9822Stuart Markow1992724206U.S.A.IdahoClarkTarghee National Forest; Western Centennial Mountains.: 0.5 mi N of entrance to Huntley Canyon, ca 1 air mi NW of Spencer.-112.18644.36811829Open slope dominated by Artemisia, Sumphoricarpos, and grasses, with many roadside weeds. Phenology: flowering & fruiting.RMRM651555 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4346B. A. Packer T. McGowan1998715196U.S.A.WyomingConverseLaramie Range: along Rabbit Creek, ca 20 air mi SW of Douglas.-105.764442.540321642225Roadside. Phenology: flowering & fruiting.RMRM651556 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4941B. A. Packer T. McGowan and J. Brondum1998731212U.S.A.WyomingAlbanyLaramie Range: Medicine Bow National Forest: along the Middle Branch Middle Lodgepole Creek, ca 11 air mi ESE of Laramie.-105.335141.268423782469Sagebrush grassland with granite outcroppings. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1570James P. Vanderhorst1990811223U.S.A.ColoradoRio BlancoFlat Tops/White River Plateau: Flat Tops Wilderness: South Fork White River Valley, ca 22 air mi NNW of Glenwood Springs.-107.456339.862424392530South-facing slope above river with aspen, oak, sagebrush, and chokecherry.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1887James P. Vanderhorst1990817229U.S.A.ColoradoRio BlancoFlat Tops/White River Plateau: Flat Tops Wilderness: Marvine Creek, ca 27 air mi E of Meeker.-107.418639.99332560Meadows and creekside.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1981James P. Vanderhorst1990827239U.S.A.ColoradoRio BlancoFlat Tops/White River Plateau: Sterry Lake, ca 16 air mi SE of Meeker.-107.606839.92062621Heavily grazed meadows around lake.RMRM651557 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5096B. A. Packer T. McGowan199885217U.S.A.WyomingAlbanyLaramie Range: off of U.S. Hwy 287, ca 15 air mi SE of Laramie.-105.468841.038623782500Creekside. Phenology: flowering & fruiting.RMRM651558 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5186B. A. Packer T. McGowan and J. Brondum199886218U.S.A.WyomingAlbanyLaramie Range: Roger Canyon Road, ca 10 air mi NE of Laramie.-105.412141.399122862378Roadside. Phenology: flowering & fruiting.RMRM651559 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5198B. A. Packer T. McGowan and J. Brondum1998811223U.S.A.WyomingConverseLaramie Range: along Root Creek, ca 11 air mi SE of Glenrock; ca 19 air mi SW of Douglas.-105.78442.700618902103Grazed cow pasture in sagebrush grassland. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3710James P. Vanderhorst199184216U.S.A.ColoradoRio BlancoFlat Tops/White River Plateau: Cyclone Creek, ca 19 air mi WSW of Oak Creek.-107.298940.18642621Meadow above creek, with Veratrum, Dugaldia, and Rudbeckias.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4133James P. Vanderhorst1991812224U.S.A.ColoradoRio Blanco[location and coordinates withheld]2134Creek bottom along road.RMRM651560 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5406B. A. Packer T. McGowan and J. Brondum1998815227U.S.A.WyomingNatronaLaramie Range: off of Wyo Hwy 487, along Big Red Creek on County Road 505; ca 30 air mi SE of Capser .-106.452542.656917071798Sarcobatus-Chrysothamnus scrubland. Phenology: flowering & fruiting.RMRM651520 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5579B. A. Packer T. McGowan and J. Brondum1998829241U.S.A.WyomingAlbanyLaramie Range: along North Laramie River.-105.35242.19819812103Along trail to river. Phenology: flowering & fruiting.RMRM648424 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39558B. E. Nelson199688221U.S.A.WyomingSweetwaterSouth-central Wyoming: along Vermillion Creek above Hiawatha or County Road 25 and ca 2/3 mi N of Colorado, ca 48 air mi SE of Rock Springs.-108.648341.011520122057Sand bars and stream margins. Phenology: flowering.RMRM648425 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39566B. E. Nelson199688221U.S.A.WyomingSweetwaterSouth-central Wyoming: along Bitter Creek S or County Road 19S at the west base of Kinney Rim, ca 41.5 air mi SE of Rock Springs; ca 35 air mi S of Point of Rocks.-108.591341.170921732195Drained stock pond on red clays. Phenology: flowering & fruiting.RMRM648426 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39780B. E. Nelson Beth Ward1996813226U.S.A.WyomingCarbonSouth-central Wyoming: Sierra Madre: along Dirtyman Fork and area to the south, 0.8-1.5 air mi SW of Dexter Peak, ca 5-5.5 air mi E of Tullis; ca 36 air mi S of Rawlins; ca 26.5 air mi NE of Baggs.-107.203441.243424142612On an old beaver dam. Phenology: flowering.RMRM648427 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39834B. E. Nelson1996813226U.S.A.WyomingCarbonSouth-central Wyoming: Sierra Madre: along a small tributary of Savery Creek and Browns Hill or County Road 602, ca 2.3 air mi NW of Tullis; ca 36.5 air mi S of Rawlins; ca 21 air mi NE of Baggs.-107.336541.243422072256Meadow, willow thickets, and banks of a small stream. Phenology: flowering.RMRM648428 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39960B. E. Nelson1996818231U.S.A.WyomingCarbonSouth-central Wyoming: ca 0.5 mi SW of Bridger Pass on the southeast edge of Atlantic Rim, ca 20 air mi SW of Rawlins.-107.44441.548522622292Stock pond dams. Phenology: flowering.RMRM648429 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39990B. E. Nelson Beth Ward1996818231U.S.A.WyomingCarbon[location and coordinates withheld]2286Bottom of old stock pond. Phenology: flowering.RMRM648423 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.40021B. E. Nelson1996819232U.S.A.WyomingCarbonSouth-central Wyoming: along Muddy Creek and the Overland Trail, ca 6 air mi SW of Bridger Pass, ca 25 air mi SW of Rawlins; ca 31.5 air mi NNE of Baggs.-107.501441.476121552182Banks and flats along the creek. Phenology: flowering & fruiting.RMRM648413 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1879Beth Ward199674186U.S.A.WyomingSweetwaterSouth-central Wyoming: Green River Basin: adjacent to and mainly S of the confluence of Middle Marsh Creek and Flaming Gorge Reservoir, ca 36 air mi SSW of Rock Springs.-109.512641.092818321868Close proximity to creek or reservoir. Phenology: flowering.RMRM648414 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2927Beth Ward1996720202U.S.A.WyomingSweetwaterSouth-central Wyoming: Washakie Basin: sagebrush flat between drainages to Willow Creek and roadside, ca 1.5 mi SW of Courthouse Butte; ca 1 mi NE of Church Butte; ca 28.5 air mi SSW of Wamsutter.-108.001941.243420442045Roadside. Phenology: flowering.RMRM648415 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3133Beth Ward1996724206U.S.A.WyomingCarbonSouth-central Wyoming: bottom and north side of Deep Gulch, ca 3 air mi SW of Cow Creek Butte; ca 35 air mi SSW of Rawlins.-107.564641.315920702213Moist creek bottom. Phenology: flowering.RMRM648416 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3260Beth Ward1996724206U.S.A.WyomingCarbonSouth-central Wyoming: spring area and adjacent land along Cherokee Creek, ca 1 air mi NNW of Smiley Draw; ca 40 air mi SSW of Rawlins.-107.583641.243420302048Dry land adjacent to spring. Phenology: flowering.RMRM648417 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3404Beth Ward1996727209U.S.A.WyomingSweetwaterSouth-central Wyoming: along Vermillion Creek, ca 2.5 air mi SE of Wyo Hwy 430 intersection with Vermillion Creek; ca 42 air mi SSE of Rock Springs.-108.747841.078421262140Creek bottom. Phenology: flowering.RMRM648418 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3494Beth Ward1996730212U.S.A.WyomingSweetwaterSouth-central Wyoming: Washakie Basin: top and northeastern slope of Wamsutter Rim, ca 4.5 air mi SSW of Wamsutter.-107.976541.612820572126Possible ephemeral spring in rim draw. Phenology: flowering.RMRM648419 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3528Beth Ward199682215U.S.A.WyomingCarbon[location and coordinates withheld]18531855Floodplain above river. Phenology: flowering.RMRM648420 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3648Beth Ward199682215U.S.A.WyomingSweetwaterSouth-central Wyoming: Washakie Basin: Rotten Springs and adjacent area, ca 2.5 air mi N of Powder Rim; ca 1 air mi S of Reader Cabin Draw; ca 20.5 air mi WNW of Baggs.-108.058941.098420332048Spring area. Phenology: flowering.RMRM648421 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3874Beth Ward1996818231U.S.A.WyomingCarbonSouth-central Wyoming: Sierra Madre: below Rendle Rim, ca 1 air mi SSW of Rendle Butte; ca 30.5 air mi SSW of Rawlins.-107.412541.344922692402Near spring fed pond. Phenology: flowering.RMRM814138 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6042Brian F. Jacobs2003814226U.S.A.New MexicoSandovalValles Caldera National Preserve: near summit of Cerro Rubio on northwest slopes, NW of Los Alamos.3170On old logging road on northwest-facing slopes. Phenology: flowering.RMRM648422 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3973Beth Ward1996820233U.S.A.WyomingCarbonSouth-central Wyoming: Sierra Madre: northwest slopes of Battle Mountain, ca 3 air mi N of Colorado; ca 18 air mi E of Baggs.-107.298441.040521952524Moist, sunny area. Phenology: flowering.RMRM648896 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7053Beth Ward1997725206U.S.A.WyomingSweetwaterSouth-Central Wyoming: slopes and draw bottom draining from Little Mountain SE to Red Creek, ca 0.5 air mi SE of U.S. Hwy 191; ca 4 air mi NW of Red Creek; ca 33 air mi S of Rock Springs.-109.244941.092822742349In draw bottom, with grass. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2902Jean Wood199586218U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Chewelah Mountain, ca 7 air mi E of Chewelah, along Tenmile Creek W of ski area road.-117.573348.301111891250Mature cedar/hemlock forest, crossed by old road with conifer saplings and alders. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3020Jean Wood199586218U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Cottonwood Creek Drainage: ca 9 air mi SE of Chewelah along Forest roads 4342 and 250.-117.573348.1418853Carex meadows with old and sporadically active beaver dams; ponderosa pine and lodgepole pine on flats; spruce and Douglas fir on slopes. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3460Jean Wood1995814226U.S.A.WashingtonPend OreilleWestern Colville National Forest and Vicinity: Little Pend Oreille Lakes, ca 20 air mi NE of Colville along south shore of Lake Leo, along Wash Hwy 20.-117.485348.7358964Lakeshore and forest edge; mixed subalpine fir/spruce/lodgepole pine. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6533Jean Wood1996727209U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Smackout Swamp, ca 7 air mi NW of Ione; ca 1 air mi NW of Smackout Pass.-117.573748.79399451006Meadow. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6708Jean Wood199681214U.S.A.WashingtonStevensWestern Colville National Forest and Vicinity: Little Twin Lakes, ca 11 air mi E of Colville.-117.638348.56171128Lake shore. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7405Jean Wood Madilane Perry1996810223U.S.A.WashingtonFerryWestern Colville National Forest and Vicinity: Curlew Lake, ca 4 air mi NNE of Republic.-118.668448.7072731Lake and shoreline. Phenology: flowering & fruiting.RMRM646393 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.19846B. E. Nelson1990818230U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Willow Creek Drainage: ca 0.5 air mi ENE of Anns Peak, ca 5 air mi SE of Hoback Junction, ca 16 air mi SE of Jackson.-110.662843.27142042Drier areas around large pond. Phenology: flowering & fruiting.RMRM646392 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.19887B. E. Nelson1990818230U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Willow Creek Drainage: along lower Willow Creek between Sourdough and Sob creeks, ca 3.5-4.5 air mi SE of Hoback Junction, ca 15-16 air mi SSE of Jackson.-110.682543.27141920Moist meadow at base of slope along creek. Phenology: flowering & fruiting.RMRM646391 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.19977B. E. Nelson1990821233U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: along Red Creek, S of the Hoback River, ca 8.5 air mi ESE of Hoback Junction, ca 17 air mi SE of Jackson.-110.563643.2851920Moist open slope above a spring. Phenology: flowering & fruiting.RMRM646390 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.20093B. E. Nelson Walter Fertig1990821233U.S.A.WyomingTetonWyoming/Salt River Ranges: Wyoming Range: Palmer Creek Trail, ca 1.5 air mi SE of Hoback Junction, ca 12.5 air mi S of Jackson.-110.70543.29972317Shore of beaver pond. Phenology: fruiting.RMRM646503 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.23664B. E. Nelson Russ Nelson1992720202U.S.A.WyomingLincolnWyoming/Salt River Ranges: Caribou Range: along Jensen Creek, ca 5 air mi N of Auburn, ca 11 air mi NW of Afton.-111.022542.85922012Creek banks. Phenology: flowering.RMRM646504 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.23756B. E. Nelson Russ Nelson199287220U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: along South Fork North Horse Creek, ca 35 air mi W of Pinedale.-110.538142.918625602621Old clearcut in spruce-fir forest. Phenology: flowering.RMRM646505 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.23849B. E. Nelson Russ Nelson199287220U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: along North Horse Creek, ca 0.5 mi N of Merna Butte; ca 2 air mi W of Merna; ca 27 air mi WNW of Pinedale.-110.380642.94582378Meadows with scattered Artemisia cana, Potentilla fruticosa and willow thickets. Phenology: flowering.RMRM646506 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.23964B. E. Nelson Russ Nelson1992810223U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: at the head of Fire Trail Creek drainage, ca 7.5 air mi SE of Alpine; ca 26 air mi N of Afton.-110.884243.104724692591Clearcut. Phenology: flowering.RMRM646507 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.23976B. E. Nelson Russ Nelson1992810223U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: along Fire Trail Creek, ca 7 air mi SE of Alpine; ca 27 air mi N of Afton.-110.903643.11922378On logging road. Phenology: flowering & fruiting.RMRM646508 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.24121B. E. Nelson Russ Nelson1992812225U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: along Hot Foot Creek between Greys River and Middle Ridge, ca 11 air mi SE of Alpine; ca 25.5 air mi NNE of Afton.-110.82543.093320122073Southerly-facing slopes with scattered sagebrush and small aspen stands. Phenology: flowering.RMRM646509 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.24275B. E. Nelson Russ Nelson1992814227U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: north slope of South Rim above Muddy Creek and Coyote Gulch, ca 9-9.5 air mi SSE of Bondurant; ca 29 air mi NW of Pinedale.-110.343143.07523172408Open aspen stand. Phenology: flowering.RMRM646510 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.24318B. E. Nelson Russ Nelson1992814227U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: along North Fork Middle Beaver Creek on South Rim, ca 10.5 air mi S of Bondurant, ca 30 air mi NW of Pinedale.-110.402543.04692469Meadows in stream bottom. Phenology: flowering.RMRM646511 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.24438B. E. Nelson Russ Nelson1992817230U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: Porcupine Creek on the slopes of Middle Ridge, ca 1-1.5 air mi E of Greys River; ca 22.5 air mi NNE of Afton.-110.783343.032221642225Edge of marshy area below large spring. Phenology: flowering.RMRM646512 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.24552B. E. Nelson Russ Nelson1992818231U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: south end of Middle Ridge between upper Moose Creek and Greys River, ca 20.5 air mi NNE of Afton.-110.743943.003123472621Disturbed areas. Phenology: flowering.RMRM646513 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.24574B. E. Nelson Russ Nelson1992819232U.S.A.WyomingLincolnWyoming/Salt River Ranges: Wyoming Range: on the divide between North Horse Creek and Blind Bull Creek drainages above the old Blind Bull Mine, ca 22.5-23 air mi NE of Afton.-110.612242.962698Small meadows along small stream. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2428Heather Bradtke2001716197U.S.A.OregonUmatillaUmatilla National Forest and Vicinity: Black Mountain Circle, Forest Road 80 off Forest Road 3128, ca 10 air mi ENE of Emmigrant State Park.-118.242545.60055614631570Dry area of mixed conifer woods; soil fine, deep, pale; slope 0-15; aspect east. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2488Heather Bradtke2001718199U.S.A.OregonUnionUmatilla National Forest and Vicinity: Phillips Creek near National Forest boundary, ca 5 air mi WSW of Elgin.-118.01833345.63388911581219Riparian area; soil organic to fine, deep, brown; slope 0-10; aspect ravine. Phenology: fruiting.RMRM646514 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.35963Ronald L. Hartman1992817230U.S.A.WyomingLincoln[location and coordinates withheld]1798Streamside and wetlands and roadside. Phenology: flowering.RMRM646515 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.36464Ronald L. Hartman1992821234U.S.A.WyomingLincoln[location and coordinates withheld]1737Streamside and adjacent uplands. Phenology: flowering & fruiting.RMRM646516 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.36667Ronald L. Hartman1992822235U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Star Peaks, on drainage W of peak 9988 (feet).-110.881743.003623782743Limestone outcrops and loose remnants with islands of grass-herb patches and coniferous forests. Phenology: flowering.RMRM647899 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10582B. E. Nelson1983731212U.S.A.WyomingHot SpringsBighorn Basin: along Gooseberry Creek, ca 1 mi W of Wyo Hwy 120; ca 3.5 air mi E of Dickie (LU Ranch); ca 34.5 air mi NW of Thermopolis.-108.679443.99921676Willow-rose-gooseberry thickets in creek bottom. Phenology: fruiting.RMRM647898 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10643B. E. Nelson1983731212U.S.A.WyomingParkBighorn Basin: along Gooseberry Creek, ca 10.5 air mi SSE of Meeteetse.-108.8005644.013061829Creek bottom. Phenology: fruiting.RMRM647897 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10702B. E. Nelson198382214U.S.A.WyomingHot SpringsBighorn Basin: along Grass Creek, ca 4.5 air mi WSW of Grass Creek (town); ca 33 air mi NW of Thermopolis.-108.739443.925281829Flats along the creek. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3627Heather Bradtke200181213U.S.A.OregonUmatillaUmatilla National Forest and Vicinity: Forest Road 21 near Bear Camp Springs, ca 10 air mi NNW of La Grande.-118.18080645.51261114781579Under mixed conifers; soil fine, semi-deep; slope 0-20; aspect westerly. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3684Heather Bradtke200181213U.S.A.OregonUmatillaUmatilla National Forest and Vicinity: Forest roads 31 and 3128, ca 10 mi W of Elgin.-118.13338945.59202814631524Spruce and grand fir woods with shrubs and forbs; soil fine, deep; slope 0-20; aspect southwest and northeast. Phenology: flowering.RMRM537351 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.12996B. E. Nelson1985819231U.S.A.WyomingParkNorthern Absarokas: red ridge between Paint and Blaine Creeks on County Road 7RO, ca 5 air mi N of Pat O'Hara Mountain, ca 18.5 air mi NW of Cody.-109.2902844.730561859Grassy draws in redbeds. Phenology: flowering & fruiting.RMRM537353 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.13050B. E. Nelson1985819231U.S.A.WyomingParkNorthern Absarokas: Elk Creek near mouth on Sunlight Creek, ca 2.5 air mi W of Dead Indian Hill, ca 24.7 air mi NW of Cody.-109.432244.75942012Meadow on travertine terraces. Phenology: flowering & fruiting.RMRM647895 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.13664B. E. Nelson1987621172U.S.A.WyomingParkBighorn Basin: on road between Silvertip and Elk Basin Oil Fields, ca 1.5 mi SE of Silvertip Oil Field; ca 15 air mi NW of Powell.-108.913444.93711432Flat in a drainage.RMRM647894 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.14078B. E. Nelson1987630181U.S.A.WyomingParkBighorn Basin: Shearing Pens Reservoir above West Branch Whistle Creek, ca 12 air mi SE of Powell.-108.6630644.600561341Along shores of reservoir. Phenology: flowering.RMRM647388 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.14344B. E. Nelson Neil Snow198783215U.S.A.WyomingTetonSouthwestern Absarokas: flats along Blackrock Creek near Blackrock Ranger Station, ca 8 air mi E of Moran, ca 31.3 air mi NE of Jackson.-110.353143.82582103Disturbed areas among sagebrush. Phenology: fruiting.RMRM647387 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.14727B. E. Nelson Neil Snow198788220U.S.A.WyomingTetonSouthwestern Absarokas: Gravel Lake, ca 7 air mi S of Yellowstone National Park, ca 42.3 air mi NNE of Jackson.-110.364244.02422439Lake shore. Phenology: fruiting.RMRM537355 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.16471B. E. Nelson198887220U.S.A.WyomingParkNorthern Absarokas: basin ca 1.5 mi SE of Dead Indian Pass, ca 20.5 air mi NW of Cody.-109.3511144.73082286Roadside. Phenology: flowering & fruiting.RMRM537352 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.16502B. E. Nelson198887220U.S.A.WyomingParkNorthern Absarokas: along Dead Indian Creek in Sunlight Basin, ca 24 air mi NW of Cody.-109.4119444.74531859Creek banks. Phenology: flowering & fruiting.RMRM599027 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.17125B. E. Nelson Jan Pollet1989718199U.S.A.WyomingPlatteLaramie Mountains: Cottonwood Creek above the falls, ca 23 air mi NW of Wheatland; ca 11 air mi ENE of Laramie Peak.-105.253942.31281676Stream bank and bench. Phenology: flowering & fruiting.RMRM599026 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.17242B. E. Nelson Jan Pollet1989719200U.S.A.WyomingPlatte[location and coordinates withheld]1667Plum thicket along stream bottom. Phenology: flowering & fruiting.RMRM591071 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.20105B. E. Nelson1990823235U.S.A.WyomingTetonWest Slope Wind River Range: Fish Creek/Moccasin Basin area, along South Fork Fish Creek between Buck and Devils Basin Creeks, ca 34 air mi ENE of Jackson.-110.076443.52972439Meadow along the creek. Phenology: flowering & fruiting.RMRM591070 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.20341B. E. Nelson1990825237U.S.A.WyomingTetonWest Slope Wind River Range: Fish Creek/Moccasin Basin area, along South Fork Fish Creek just above confluence with North Fork, ca 30-31 air mi ENE of Jackson.-110.160543.57312347Along old road in creek bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4177Heather Bradtke200185217U.S.A.OregonWallowaUmatilla National Forest and Vicinity: Elk Flats Trail, ca 30 air mi E of Milton-Freewater.-117.77341745.91858841463Flat land near a river; soil fine, deep; slope 0-20; aspect southeast. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.21784B. E. Nelson1991726207U.S.A.WyomingFremontOwl Creek/Bridger Mountains: Bridger Mountains: slopes and drainage from Fuller Peak to East Fork Dry Creek on Copper Mountain; ca 11.5 air mi NW of Lysite, ca 38-39 air mi NE of Riverton.-107.823343.407820422103Bottom of a draw along a spring drainage.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.21914B. E. Nelson1991731212U.S.A.WyomingHot SpringsOwl Creek/Bridger Mountains: Bridger Mountains: Ditch Creek Canyon, S and above Buffalo Creek, ca 14 air mi ESE of Thermopolis.-107.966943.58117981890Streambanks.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.21940B. E. Nelson199182214U.S.A.WyomingHot SpringsOwl Creek/Bridger Mountains: Bridger Mountains: Klondike Peak and ridges NE and SW, NNW of Lysite Mountain; ca 24.5-25 air mi ESE of Thermopolis.-107.746443.566420122188In limber pine forest on steep northerly facing slope.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.22005B. E. Nelson199184216U.S.A.WyomingHot SpringsOwl Creek/Bridger Mountains: Bridger Mountains: along Ackles Fork ca 1.5 mi above confluence with East Kirby Creek, ca 20 air mi ESE of Thermopolis.-107.827543.56611646Clay soil in wet creek bottom.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.22021B. E. Nelson199185217U.S.A.WyomingHot SpringsOwl Creek/Bridger Mountains: Bridger Mountains: along upper Grass Creek, ca 1.3 air mi N of Birdseye Pass, ca 14 air mi SE of Thermopolis.-108.063143.47752012Meadows in stream bottom.RMRM318043 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2472B. E. Nelson1978928271U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole: Springer Reservoir (Goshen Hole Reservoir) ca 1.5 air mi S of Yoder, ca 13.5 air mi SSW of Torrington.-104.30141.89681310Sandy clay in disturbed area with Xanthium and Muhlenbergia. Abundant. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4274Heather Bradtke200187219U.S.A.OregonUnionUmatilla National Forest and Vicinity: near Phillips Creek, ca 6 mi WNW of Elqin.-118.03194445.5891679751006Sunny disturbed area leading down to the creek; soil fine, deep; slope 0-20; aspect ravine. Phenology: flowering.RMRM333261 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3857B. E. Nelson1979716197U.S.A.WyomingSheridanPowder River Basin: ca 6.5 air mi WNW of Parkman, ca 12 air mi NW of Dayton.-107.4705644.97581524Brushy slope. Phenology: flowering & fruiting.RMRM333352 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3929B. E. Nelson1979716197U.S.A.WyomingSheridanPowder River Basin: ca 6 air mi N of Dayton, ca 6.5 air mi NW of Ranchester along Cooper Draw.-107.286944.95921250Grassy slopes. Phenology: flowering & fruiting.RMRM333381 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3959B. E. Nelson1979717198U.S.A.WyomingJohnsonPowder River Basin: ca 5.5 air mi S of Kaycee on TTT Road (Lone Bear Road on map).-106.644443.63641493Disturbed areas. Phenology: flowering & fruiting.RMRM333380 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4008B. E. Nelson1979717198U.S.A.WyomingJohnsonPowder River Basin: ca 7 air mi SSE of Kaycee on I-25, along the South Fork Powder River.-106.58543.62171402Slopes along the river. Phenology: flowering & fruiting.RMRM348665 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4248B. E. Nelson197981213U.S.A.WyomingFremontBig Horn Mountains: ca 10 air mi NE of Lost Cabin on Big Horn Trail, ca 32.5 air mi ENE of Shoshoni.-107.523643.40611920Moist meadow near small stream. Phenology: flowering & fruiting.RMRM348666 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5872B. E. Nelson198078190U.S.A.WyomingWashakieBighorn Basin: in Cornell Gulch on the Nowater Trail, ca 2 air mi W of Nowood, ca 30.5 air mi S of Ten Sleep.-107.46443.59561707Roadside and disturbed areas. Phenology: flowering & fruiting.RMRM348667 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6709B. E. Nelson1980720202U.S.A.WyomingJohnsonBig Horn Mountains: along Clear Creek just off U.S. Hwy 16, ca 5.3 air mi WSW of Buffalo.-106.8113944.33141676Disturbed areas and roadside. Phenology: flowering & fruiting.RMRM348668 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7106B. E. Nelson Gael Fonken1980814227U.S.A.WyomingWashakieBig Horn Mountains: at the head of Tensleep Canyon on an old section of U.S. Hwy 16, ca 12.5 air mi NE of Ten Sleep.-107.2411144.14562271Disturbed area. Phenology: flowering & fruiting.RMRM348662 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7166B. E. Nelson Gael Fonken1980815228U.S.A.WyomingJohnsonBig Horn Mountains: along U.S. Hwy 16 above Hondo Creek, ca 2 air mi S of Hunter Mesa; ca 13 air mi WSW of Buffalo.-106.951944.28782347Roadside. Phenology: flowering & fruiting.RMRM348664 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8270B. E. Nelson1981717198U.S.A.WyomingWashakieBig Horn Mountains: along Nowood River at the foot of Mahogany Butte, ca 27 air mi S of Ten Sleep, ca 9.5 air mi SSW of Big Trails.-107.381143.65061524Both entire and pinnatifid leaf forms together. Phenology: flowering & fruiting.RMRM647905 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8346B. E. Nelson1981719200U.S.A.WyomingHot SpringsBighorn Basin: Wind River Indian Reservation: overflow area along South Fork Owl Creek, ca 25 air mi WNW of Thermopolis; ca 8 air mi SW of Hamilton Dome on Wyo Hwy 174.-108.705343.71431798Around the edges of the ponds. Phenology: flowering.RMRM647904 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8427B. E. Nelson1981721202U.S.A.WyomingBig HornBighorn Basin: Owl Charco Reservoir, ca 18 air mi SW of Basin on Fifteenmile Creek Road.-108.2602844.17471371In the reservoir area. Phenology: flowering.RMRM647903 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8460B. E. Nelson1981721202U.S.A.WyomingWashakieBighorn Basin: Rock Waterhole Reservoir, ca 22 air mi NW of Worland on Fifteenmile Creek Road.-108.338344.160561371Clay slopes around the reservoir.RMRM647902 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8488B. E. Nelson1981721202U.S.A.WyomingBig HornBighorn Basin: Neves Reservoir: at the foot of Tatman Mountain on the south side, ca 23 air mi WSW of Basin; ca 11.5 air mi S of Burlington.-108.482844.291391615Disturbed areas. Phenology: flowering.RMRM647901 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8540B. E. Nelson1981722203U.S.A.WyomingParkBighorn Basin: along the Greybull River between YU Bench and Sheets Flat, ca 23.5 air mi NE of Meeteetse.-108.6830644.33531524Roadside and disturbed areas at foot of the bluff. Phenology: flowering.RMRM647900 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8614B. E. Nelson1981723204U.S.A.WyomingHot SpringsBighorn Basin: along the Big Horn River, ca 7 air mi NNE of Thermopolis; ca 1 air mi ENE of Lucerne.-108.156543.74681310Sandy soil in disturbed sites. Phenology: flowering.RMRM296253 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.949B. E. Nelson1973813225U.S.A.WyomingCarbonMedicine Bow Mountains:-106.464441.25192500Phenology: flowering & fruiting.RMRM296260 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.965B. E. Nelson1973815227U.S.A.WyomingAlbanyMedicine Bow Mountains: in the canyon along Johns Creek on the northeast corner of Sheep Mountain, 23 1/4 mi W of Laramie.-106.024741.26832439Common in moist sandy soil along the stream with Rubus. 1 of 2 sheets Phenology: vegetative only.RMRM296261 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.965B. E. Nelson1973815227U.S.A.WyomingAlbanyMedicine Bow Mountains: in the canyon along Johns Creek on the northeast corner of Sheep Mountain, 23 1/4 mi W of Laramie.-106.024741.26832439Common in moist sandy soil along the stream with Rubus. 2 of 2 sheets Phenology: flowering & fruiting.RMRM348663 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1065Gael Fonken1980826239U.S.A.WyomingJohnsonBig Horn Mountains: ca 1/2 mi E of Lame Deer Lake, ca 7 air mi SW of Hunter Ranger Station, ca 18 air mi WSW of Buffalo.-107.052544.25832896Among boulders. Phenology: flowering & fruiting.RMRM387258 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5132June Haines Georgia Haines1985727208U.S.A.WyomingFremontSoutheast edge of Trail Lake at inlet of Torrey Creek, ca 8.2 air mi SSE of Dubois; ca 6.9 mi S on Trail Lake Road.-109.545843.43452256Meadow beside road to head of trail. Phenology: flowering & fruiting.RMRM387259 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5299June Haines Georgia Haines198584216U.S.A.WyomingFremontGreen Mountain Park, West Fork Middle Cottonwood Creek, ca 9.5 air mi SSE of Jeffrey City.-107.727442.38323782500Creek banks and wet meadows. Phenology: flowering & fruiting.RMRM387260 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5415June Haines198587219U.S.A.WyomingFremontGranite Mountain Uplift: Sweetwater River, ca 3 air mi NE of Jeffrey City.-107.7890842.5263518991932Sand bars on edge of stream and banks of stream. Phenology: flowering & fruiting.RMRM387261 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5509June Haines Georgia Haines1985812224U.S.A.WyomingFremontWind River Basin: Ocean Lake, east side, ca 3 air mi WSW of Midvale.-108.567243.207515951609Meadow at edge of lake. Phenology: flowering & fruiting.RMRM387262 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5660June Haines1985820232U.S.A.WyomingFremontGranite Mountain Uplift: Green Mountains: Cottonwood Campground along branch of East Cottonwood Creek.-107.687542.38392210Meadow beside creek. Phenology: flowering & fruiting.RMRM387263 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7015June Haines Georgia Haines1986727208U.S.A.WyomingFremontGranite Mountain Uplift: Beaver Rim: W of Rock Creek Mountain, tributary of Rock Creek, ca 17.5 air mi NNE of Sweetwater Station.-108.043342.775920362079Edge of creek. Phenology: flowering & fruiting.RMRM387264 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7110June Haines Georgia Haines1986830242U.S.A.WyomingFremontSweetwater River, south of bridge across river on Agate Flats Road, ca 9.5 air mi ENE of Jeffrey City.-107.632142.511218841890Dry area above river bank. Phenology: flowering & fruiting.RMRM523790 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10919Keith H. Dueholm1980822235U.S.A.WyomingSweetwaterRock Springs Uplift: above Dry Canyon, and along Salt Wells Creek, ca 24 air mi SE of Rock Springs.-108.937841.29582134Sandstone uplift above canyon, with sandy areas, and Juniperus osteosperma, Pinus flexilis, Pseudotsuga, Cercocarpus montanus and C. ledifolius, on broad expanse of exposed rock, flats along creek; along creekbed. Phenology: flowering & fruiting.RMRM523791 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10960Ronald L. Hartman Keith H. Dueholm1980522143U.S.A.WyomingWashakieBig Horn Mountains: Spring Creek Road 6.7 mi E and S of junction with Wyo Hwy 434.1524Seepage areas along small stream, sagebrush slopes, thickets of serviceberry and aspen; along creek. Phenology: flowering & fruiting.RMRM523792 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11765Keith H. Dueholm1981719200U.S.A.WyomingCampbellPowder River Basin: ca 18 air mi SE of Reno Junction.-105.2543.55691463Streambed with standing water, slopes of deep cut gully, margins of dried holding pond, upland terraces; gully. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10667Heather Bradtke2002812224U.S.A.OregonGrantUmatilla National Forest and Vicinity: Granite Creek near mouth of Lick Creek, ca 2 mi N and 5 mi W of Granite.-118.517544.8463891341Weedy creek bank; slope 0. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10787Heather Bradtke2002812224U.S.A.OregonGrantUmatilla National Forest and Vicinity: North Fork Ruby Creek off Forest Road 10, ca 2 mi S and 4 mi W of Granite.-118.53138944.7938891768In parking lot; slope 0; aspect none. Phenology: flowering & fruiting.RMRM324200 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3511Keith H. Dueholm Mary Alice Sanguinetti197877188U.S.A.WyomingCampbell[location and coordinates withheld]1189Streambank, shaded ravine, gravel slope, highway right-of-way; ravine. Phenology: flowering & fruiting.RMRM324201 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3910Keith H. Dueholm Mary Alice Sanguinetti1978710191U.S.A.WyomingCampbell[location and coordinates withheld]1189Sagebrush plains, shallow draw, eroded slope, gravel roadside; roadside. Phenology: flowering & fruiting.RMRM324202 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4030Keith H. Dueholm Mary Alice Sanguinetti1978712193U.S.A.WyomingCampbell[location and coordinates withheld]1158Plains and flats along creek, ditches; ditch. Phenology: flowering & fruiting.RMRM324207 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4269Keith H. Dueholm Mary Alice Sanguinetti1978714195U.S.A.WyomingCampbell[location and coordinates withheld]1432Plains, flats, along draw; flats. Phenology: flowering & fruiting.RMRM324204 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4350Keith H. Dueholm Mary Alice Sanguinetti1978715196U.S.A.WyomingCampbell[location and coordinates withheld]1463Eroded plains, draw, holding pond; near pond. Phenology: flowering & fruiting.RMRM324203 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4617Keith H. Dueholm1978723204U.S.A.WyomingCampbellPowder River Basin: along Cottonwood Creek, ca 1.5 air mi NNE of Adon.-105.2213944.533061189Eroded plain and flats along creek, gravel roadside; along stream. Phenology: flowering & fruiting.RMRM324196 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5332Keith H. Dueholm197884216U.S.A.WyomingConversePowder River Basin: ca 1 air mi N of Orpha.-105.502242.86031524Plains along highway right-of-way, dry ditches; ditch. Phenology: flowering & fruiting.RMRM324206 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5521Keith H. Dueholm197885217U.S.A.WyomingCampbellPowder River Basin: ca 6 air mi NE of Soda Wells.-105.1986144.69251280Eroded slopes, ravines, ponderosa pine slopes, wet ditches, plains; ravine. Phenology: flowering & fruiting.RMRM324194 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5630Keith H. Dueholm197887219U.S.A.WyomingJohnson[location and coordinates withheld]1341Drainage in ditches. Phenology: flowering & fruiting.RMRM324199 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5687Keith H. Dueholm197887219U.S.A.WyomingJohnson[location and coordinates withheld]1341Disturbed flats. Phenology: flowering & fruiting.RMRM324198 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5898Keith H. Dueholm1978810222U.S.A.WyomingJohnson[location and coordinates withheld]1250Shaley bluffs, floodplain of creek; ditch. Phenology: flowering & fruiting.RMRM324193 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5975Keith H. Dueholm1978811223U.S.A.WyomingSheridan[location and coordinates withheld]1310Plains, flats along dry creekbed; near creekbed. Phenology: flowering & fruiting.RMRM324205 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6237Keith H. Dueholm1978826238U.S.A.WyomingCampbellPowder River Basin: South Middle Pumpkin Butte.-105.876143.729417071829Limber pine slopes, rocky slopes, small pools of water on upper east slopes, plains and outcrops on summit; slopes. Phenology: flowering & fruiting.RMRM333237 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7521Keith H. Dueholm1979629180U.S.A.WyomingJohnsonPowder River Basin: Ninemile Creek, ca 8 air mi W of Powder River.-106.3402843.89811371Flats around holding pond, drying muddy margins of pond; flats. Phenology: flowering & fruiting.RMRM333353 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7983Keith H. Dueholm1979711192U.S.A.WyomingNiobrara[location and coordinates withheld]1402Large seepage area along small creek below holding dam, sagebrush plains; on holding dam. Phenology: flowering & fruiting.RMRM333379 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8083Keith H. Dueholm1979712193U.S.A.WyomingJohnson[location and coordinates withheld]1432Sagebrush plains, wet draw, hills with clinker outcrops; draw. Phenology: flowering & fruiting.RMRM333262 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8307Keith H. Dueholm1979721202U.S.A.WyomingJohnson[location and coordinates withheld]1585Sedge meadow along wet draw, flats near draw; flats. Phenology: flowering & fruiting.RMRM333260 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8433Keith H. Dueholm1979721202U.S.A.WyomingJohnson[location and coordinates withheld]1402Sandy flats along lake, edges and meadows along creek; meadow. Phenology: flowering & fruiting.RMRM333239 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8528Keith H. Dueholm197982214U.S.A.WyomingJohnsonPowder River Basin: ca 21 air mi ESE of Buffalo.-106.287544.21781341Sagebrush plain, deeply cut ravine with shaley slopes, occasional coal faces; ravine. Phenology: flowering & fruiting.RMRM333259 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8641Keith H. Dueholm197983215U.S.A.WyomingJohnsonPowder River Basin: Jack Moore Reservoir, along Boxelder Creek, ca 1.5 air mi E of south end of Lake De Smet.-106.6933344.46191371Flats around margin of holding pond, meadow along creek, gravelly roadside, hilly plains on clinker; roadside. Phenology: flowering & fruiting.RMRM333378 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8739Keith H. Dueholm197988220U.S.A.WyomingNatronaPowder River Basin: ca 5.5 air mi W of Midwest.-106.377543.42111524Sagebrush plain, sandstone outcrops and ridge, sandy roadsides; roadside. Phenology: flowering & fruiting.RMRM333377 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8808Keith H. Dueholm197989221U.S.A.WyomingConversePowder River Basin: North Platte River, ca 6.5 air mi E of Glenrock.-105.738642.84531493Floodplain of river, willow thicket, small backwater, sandy terrace above river, sagebrush plains; thicket. Phenology: flowering & fruiting.RMRM333351 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8892Keith H. Dueholm197989221U.S.A.WyomingSheridanPowder River Basin: along U.S. Hwy 87, ca 2 road mi NW of Ranchester.-107.224244.92941463Wet ditches, meadows along small stream, tall grass prairie of big bluestem and slough grass, between railroad and wet ditch; meadow. Phenology: flowering & fruiting.RMRM333236 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9031Keith H. Dueholm1979812224U.S.A.WyomingSheridanPowder River Basin: Prairie Dog Creek, along Wyo Hwy 336, ca 2 air mi E of Sheridan.-106.9019444.82751128Meadows and willow thickets along creek; meadows. Phenology: flowering & fruiting.RMRM556046 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2007Robert S. Kirkpatrick1983813225U.S.A.WyomingParkAbsaroka Mountains: ca 18 mi WSW of Meeteetse, along Timber Creek in the vicinity of the Timber Creek Ranger Station.-109.183444.04282317Along the creek in wet areas and adjacent banks; rocky floodplains.RMRM333350 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10031Ronald L. Hartman1979712193U.S.A.WyomingNatronaOil field, ca 4.2 air mi N of Waltman.-107.193643.11921890Eroded shale slopes with sandstone outcrops and drainages. Phenology: flowering & fruiting.RMRM537354 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.22008Ronald L. Hartman1985819231U.S.A.WyomingParkNorthern Absarokas: Paint Creek, 10-11 air mi E of Sunlight Ranger Station.-109.330844.716720732256Wooded slopes and stream bottom. Phenology: flowering & fruiting.RMRM591069 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28421Ronald L. Hartman1990825237U.S.A.WyomingTetonWest Slope Wind River Range: South Fork Fish Creek between Purdy and Hackamore Creeks.-110.120843.573123622378Meadows, gravel bars, and adjacent lodgepole pine forests. Phenology: flowering & fruiting.RMRM314294 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5003Ronald L. Hartman Barry Hammel197793246U.S.A.WyomingCarbonMedicine Bow Mountains: spring ca 1 mi NW of Sheephead Mountain.-106.641441.67612286Moist soil below spring. Common. Phenology: flowering & fruiting.RMRM324195 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7467Ronald L. Hartman Mary Alice Sanguinetti1978626177U.S.A.WyomingJohnsonPowder River Basin: ca 2.5 air mi N of I-90 at the Powder River.-106.1666744.24811402Roadside. Phenology: flowering & fruiting.RMRM333238 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9941Ronald L. Hartman1979711192U.S.A.WyomingCarbonHanna Basin: Seminoe Reservoir, ca 10 air mi SSE of Seminoe Dam.-106.838342.04941939Sandy beach mostly in shade of Tamarix but occasionally in open. Associates include Potentilla, Astragalus, Physaria, Halogeton, Verbena, Iva, Potentilla anserina, and Lupinus. Phenology: flowering & fruiting.RMRM585144 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10546Walter Fertig1991727208U.S.A.WyomingSubletteWest Slope Wind River Range: Boulder Creek Canyon between confluence of Macs Creek with Boulder Creek and the confluence of Divide Creek with Boulder Creek, ca 16 air mi E of Pinedale.-109.533942.858123782439Weedy margin of trail on disturbed, rocky soil. Phenology: flowering & fruiting.RMRM585143 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.12354Walter Fertig1991827239U.S.A.WyomingSubletteWest Slope Wind River Range: Adjacent to Green River Lakes Road, ca 0.5 mi S of Kendall Guard Station, 0.25 mi E of Green River, ca 25 air mi NNW of Pinedale.-110.013143.24032378Open canopy, dry weedy roadside ditch bordered by sagebrush-grassland. Phenology: flowering & fruiting.RMRM585142 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.12358Walter Fertig1991827239U.S.A.WyomingSubletteWest Slope Wind River Range: Kendall Warm Springs, ca 28 air mi NNW of Pinedale.-110.013143.28282378Moist, grassy, open banks of warm springs on east side of Green River Lakes Road. Phenology: flowering.RMRM591074 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4651Walter Fertig1990728209U.S.A.WyomingSubletteWest Slope Wind River Range: Kendall Warm Springs and bank of Green River adjacent to Warm Springs Falls, ca 30 air mi NNW of Pinedale.-110.021943.28062378Open bank of Warm Springs. Phenology: flowering & fruiting.RMRM591073 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5100Walter Fertig199082214U.S.A.WyomingSubletteWest Slope Wind River Range: north shore of New Fork Lakes, ca 17 air mi N of Pinedale.-109.947843.10312384Rocky/sandy beach. Phenology: flowering & fruiting.RMRM591072 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5789Walter Fertig199089221U.S.A.WyomingSubletteWest Slope Wind River Range: Along Gypsum Creek Road, ca 28 air mi N of Pinedale.-109.95543.25672560Weedy roadside. Phenology: flowering & fruiting.RMRM599025 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27097B. E. Nelson1993719200U.S.A.WyomingGoshen[location and coordinates withheld]13501356Roadside and fence line. Phenology: flowering & fruiting.RMRM599024 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27342B. E. Nelson1993723204U.S.A.WyomingConverse[location and coordinates withheld]1518Cottonwood woodland with Elaeagnus and Shepherdia. Phenology: flowering.RMRM599023 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27433B. E. Nelson1993726207U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Hartville Uplift: just N of Glendo Dam on Glendo Park Road, ca 4.2 air mi ESE of Glendo; ca 18.3 air mi NW of Guernsey.-104.957542.484714631493Bottom of dry stock pond in sandy grassland. Phenology: flowering & fruiting.RMRM599022 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27597B. E. Nelson1993726207U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Hartville Uplift: along North Platte River ca 0.6-0.8 air mi SE of Guernsey Dam, ca 1 air mi NW of Guernsey.-104.763342.28513231341River bank. Phenology: flowering & fruiting.RMRM599021 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27678B. E. Nelson1993728209U.S.A.WyomingNatrona[location and coordinates withheld]17221731Broad floodplain between bluffs with extensive meadows. Phenology: flowering & fruiting.RMRM599020 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27708B. E. Nelson1993728209U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: ca 1 air mi SW of Notches Dome off Notches or County Road 106, ca air mi NNW of Powder River; ca 43 air mi NW of Casper.-107.030843.175617981829Weedy slope of sandstone draw. Phenology: flowering.RMRM599019 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27816B. E. Nelson1993730211U.S.A.WyomingConverse[location and coordinates withheld]15601567Moist swale in rolling plains. Phenology: flowering.RMRM599018 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27869B. E. Nelson1993730211U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Walker Creek just N of Manning or County Road 53, ca 20 air mi NE of Douglas.-105.082543.052514291445Floodplain meadows and sparsely wooded stream banks. Phenology: flowering & fruiting.RMRM599017 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27963B. E. Nelson1993730211U.S.A.WyomingNiobraraSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Deep Creek on Field or County Road 50 SE of Cow Creek Buttes, ca 17 air mi NW of Lance Creek, ca 30.5 air mi NW of Lusk.-104.890843.2113411356Roadside and adjacent roadcuts. Phenology: flowering & fruiting.RMRM599016 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28011B. E. Nelson1993730211U.S.A.WyomingConverse[location and coordinates withheld]1371Moist meadows and banks of reservoir. Phenology: flowering.RMRM599015 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28168B. E. Nelson199383215U.S.A.WyomingNiobrara[location and coordinates withheld]14481454Moist meadows around reservoir. Phenology: flowering & fruiting.RMRM599014 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28448B. E. Nelson1993817229U.S.A.WyomingLaramie[location and coordinates withheld]17831829Disturbed area adjacent to and under the bridge. Phenology: flowering & fruiting.RMRM599013 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28513B. E. Nelson1993817229U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek on Marsh or County Road 245-1, ca 3/4 mi W of (upside down V)X Ranch, ca 25.5 air mi ENE of Iron Mountain (Farthing); ca 35 air mi N of Cheyenne.-104.7451941.6337816461670Drier cobblestone gravel bars. Phenology: flowering & fruiting.RMRM599012 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28595B. E. Nelson1993817229U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek ca 1/4 mi above Little Bear Creek on County Road 153, ca 14.3 air mi SE of Chugwater; ca 38.5 air mi SW of Torrington.-104.618641.616615731579Meadows and low benches along the stream. Phenology: flowering.RMRM599011 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28803B. E. Nelson1993822234U.S.A.WyomingConverse[location and coordinates withheld]15941612Fence row, road cut, and adjacent sandy sagebrush-grassland. Phenology: flowering & fruiting.RMRM599010 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.28978B. E. Nelson1993822234U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along a tributary of Twentymile Creek on Manning or County Road 53, ca 24.5 air mi NE of Douglas; ca 14 air mi N of Lost Springs.-104.962542.96671463Benches and banks along drainage channel. Phenology: flowering.RMRM599009 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29046B. E. Nelson1993824236U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Goldeneye Wildlife and Recreation Area: Burlington Lake, ca 1 air mi NE of U.S. Hwy 20 and 26, ca 6 air mi E of Natrona; ca 23 air mi NW of Casper.-106.702243.01611676Flats near the lake. Phenology: flowering & fruiting.RMRM598998 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29105B. E. Nelson1993824236U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Poison Spider Creek on Poison Spider or County Road 201 between Emigrant Gap Ridge and Oil Mountain, ca 18.5 air mi W of Casper.-106.683942.828616761695Sand bars, stream bank, and low moist benches. Phenology: flowering & fruiting.RMRM599008 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29140B. E. Nelson1993825237U.S.A.WyomingNatrona[location and coordinates withheld]1560Moist open Russian olive-cottonwood woodland. Phenology: flowering.RMRM599007 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29195B. E. Nelson1993826238U.S.A.WyomingConverse[location and coordinates withheld]1451Thickets along the river. Phenology: flowering & fruiting.RMRM599006 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29314B. E. Nelson1993826238U.S.A.WyomingConverse[location and coordinates withheld]1554Thickets in the stream bottom. Phenology: flowering.RMRM599005 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29454B. E. Nelson1993829241U.S.A.WyomingNiobraraSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Indian Creek or County Road 60 ca 1.3 air mi W of Nebraska and ca 4 air mi N of Hat Creek Breaks, ca 22.3 air mi NE of Lusk; ca 18.5 air mi N of Van Tassell.-104.079942.930212561262Steep slopes and low bluffs around the reservoir. Phenology: flowering.RMRM599004 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.29649B. E. Nelson1993831243U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: along the North Platte River on London Flats, ca 2.2 air mi S of Lingle, ca 9.5 air mi WNW of Torrington.-104.356642.10721262Thickets in the river bottom. Phenology: flowering.RMRM654649 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.31817B. E. Nelson1994621172U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Cow Creek and the north end of Cow Creek Buttes, ca 15 air mi ENE of Bill; ca 43 air mi NE of Douglas.-104.990343.355914321481Seep area with sagebrush on scoria butte. Phenology: flowering.RMRM654671 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.31949B. E. Nelson1994621172U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: on the divide between Archie Draw, Coal Draw and Middle Creek just W of Cow Creek Buttes, ca 14 air mi ENE of Bill; ca 40.5 air mi NE of Douglas.-104.990343.284114751481In and at the edge of a stock pond in clay badlands. Phenology: flowering.RMRM654650 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.32043B. E. Nelson David Reilly1994623174U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: along the Laramie River ca 0.5 mi E of the old fort, ca 1.7 air mi SW of Fort Laramie (town); ca 21 air mi NW of Torrington.-104.547342.20251289Rocky sand bars. Phenology: flowering & fruiting.RMRM654651 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.32661B. E. Nelson1994711192U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Hartville Uplift: along a draw leading into Rawhide Creek ca 1 mi W of Middle Rawhide Butte, ca 11 air mi NW of Jay Em; ca 38.5 air mi NW of Torrington.-104.522442.569915391573Chokecherry-boxelder thicket at the edge of a vernal pool. Phenology: flowering & fruiting.RMRM654652 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.32794B. E. Nelson1994713194U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: upper Gillam Draw on the west side of Pine Ridge, ca 53 air mi NW of Douglas; ca 11.5 air mi SW of Ross.-106.065543.33616761695Meadows along stream bottom. Phenology: flowering.RMRM654653 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.32843B. E. Nelson1994713194U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Salt Creek between Pine and Little Pine ridges ca 2 air mi E of Naval Petroleum Reserve No. 3, ca 12 air mi SE of Midwest; ca 29.5 air mi NNE of Casper.-106.124943.26471603Flats along the stream bottom with areas of sand, silt and clay. Phenology: flowering & fruiting.RMRM654654 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.32888B. E. Nelson1994715196U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Box Creek just below Bobby Draw off Highland Loop or County Road 32, ca 12.7 air mi SW of Bill; ca 22 air mi N of Douglas.-105.384443.080814931500Sandy flats in the stream bottom with patches of silver sage and scattered cottonwoods. Phenology: flowering & fruiting.RMRM654656 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.32963B. E. Nelson1994718199U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Lost Creek at U.S. Hwy 18-20 just ESE of Lost Springs, ca 23 air mi E of Douglas.-104.921242.76181487Stream bottom with willows. Phenology: flowering & fruiting.RMRM654655 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33092B. E. Nelson David Reilly and Jim Cahill1994720201U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: S of the Laramie River along the north side of the Fort Laramie Canal, ca 2 air mi SW of Fort Laramie (town); ca 21 air mi NW of Torrington.-104.551642.196112921298Seep area along small drainage. Phenology: flowering & fruiting.RMRM654657 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33154B. E. Nelson1994720201U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: off the west edge of Slater flats ca 1.5 air mi W of Goshen Hole Rim, ca 11 air mi SE of Wheatland; ca 1.5-2 air mi E of Bordeaux.-104.818341.937315481567Steep sandy slopes in siltstone breaks. Phenology: flowering.RMRM654658 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33282B. E. Nelson Tim Chumley and Robbin Romberg199482214U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek ca 0.5 mi above the mouth of Spring Run, ca 17.7 air mi W of LaGrange, ca 34.5 air mi SSW of Torrington.-104.503941.61971518Sandy flats in the creek bottom with patches of snowberry, prunus or boxelder. Phenology: flowering.RMRM654659 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33365B. E. Nelson Tim Chumley and Robbin Romberg199483215U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Chugwater Creek SE of Degans Butte, ca 7.5-8.5 air mi SW of Chugwater; ca 25 air mi S of Wheatland.-104.949241.691116891701Hay meadows and valley bottom with scattered patches of boxelder. Phenology: flowering & fruiting.RMRM654660 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33469B. E. Nelson Tim Chumley and Robbin Romberg199484216U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: Sinnard Reservoir and vicinity, ca 4.5 air mi WNW of Hawk Springs; ca 19 air mi SSW of Torrington.-104.347841.807713261338Clay slopes near the reservoir with scattered greaswood. Phenology: flowering.RMRM654661 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33510B. E. Nelson Tim Chumley and Robbin Romberg199484216U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek ca 3/4 mi W of the mouth of Dater Creek and ca 4 air mi S of Castle Rocks, ca 11 air mi W of La Grange; ca 30 air mi SSW of Torrington.-104.377241.64951463Creek banks and adjacent woodlands and meadows. Phenology: flowering & fruiting.RMRM654672 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33684B. E. Nelson Tim Chumley and Robbin Romberg199489221U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Rasmus Lee Lake ca 3 air mi W of Bessemer Mountain, ca 17 air mi WSW of Casper.-106.609242.739716431658Moist to wet areas created by siphon leakage. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33713B. E. Nelson Tim Chumley and Robbin Romberg199489221U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Rasmus Lee Lake ca 3 air mi W of Bessemer Mountain, ca 17 air mi WSW of Casper.-106.568542.71516061609Moist to wet flats along the creek. Phenology: flowering & fruiting.RMRM654662 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33713B. E. Nelson Tim Chumley and Robbin Romberg199489221U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Poison Spring Creek ca 3/4 air mi N of the North Platte River and ca 2 air mi SW of Bessemer Mountain, ca 16 air mi SW of Casper.-106.568542.71516061609Moist to wet flats along the creek. Phenology: flowering & fruiting.RMRM654673 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33874B. E. Nelson Tim Chumley and Robbin Romberg1994812224U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along the Laramie River above and below Chugwater Creek and along Chugwater Creek, ca 7.5 air mi NE of Wheatland.-104.858342.125613471353Riparian benches, streambanks and adjacent meadows. Phenology: flowering.RMRM654674 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.33962B. E. Nelson Tim Chumley and Robbin Romberg1994810222U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Thirtythree Mile Reservoir on South Fork Casper Creek, ca 13 air mi NW of Casper.-106.509642.97511621On shores of reservoir and surrounding flats and drainages. Phenology: flowering.RMRM654663 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.34165B. E. Nelson1994821233U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Ross or County Road 31 between Dry Fork Cheyenne River and Cheyenne River Draw and along Cheyenne River Draw, ca 36 air mi NNW of Douglas.-105.689543.221815731588Meadows and grassy channel in the draw. Phenology: flowering & fruiting.RMRM654664 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.34213B. E. Nelson1994821233U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Antelope Creek and Ross or County Road 31, ca 31 air mi WNW of Bill, ca 50.5 air mi NNW of Douglas, ca 3.5 air mi SE of Ross.-105.82843.421615571573Moist meadows in the valley bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6413Robert D. Dorn1995813225U.S.A.WyomingHot SpringsBridger Creek; 1/4 mi N of Fremont County.-107.764443.47891829Meadow with Artemisia and Lupinus.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6459Robert D. Dorn1995814226U.S.A.WyomingBig Horn6 mi SSE of Manderson.-107.913444.18961219River bank with Cirsium and Hordeum.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6599Robert D. Dorn199592245U.S.A.WyomingLincoln1 mi E of LaBarge.-110.179842.2572073Shale slope with Chrysothamnus and Sarcobatus.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9506Heather Bradtke2002727208U.S.A.WashingtonGarfieldUmatilla National Forest and Vicinity: Hard-to-get-to Ridge at end of Forest Road 4027; ca 4 mi N and 17 mi W of Anatone.-117.48055646.19083315851615Ponderosa pine and Douglas fir; slope 5-15, aspect northwest. Phenology: flowering & fruiting.RMRM599003 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39933Ronald L. Hartman199374185U.S.A.WyomingPlatte[location and coordinates withheld]1493Calcareous slopes and sandy flats. Phenology: flowering.RMRM599002 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.40003Ronald L. Hartman199374185U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Johnson Reservoir 3, ca 6 air mi NNW of Wheatland.-104.99542.12561371Sandy slopes and lake margin. Phenology: flowering & fruiting.RMRM599001 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.40854Ronald L. Hartman1993711192U.S.A.WyomingPlatteSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: Wyo Hwy 34 and I-25 interchange, ca 7 mi S of Wheatland.-104.951741.96751493Sandy slopes and stream bottom. Phenology: flowering.RMRM599000 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.41080Ronald L. Hartman1993713194U.S.A.WyomingLaramie[location and coordinates withheld]1996Disturbed areas along railroad. Phenology: flowering & fruiting.RMRM598999 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.41097Ronald L. Hartman1993713194U.S.A.WyomingLaramie[location and coordinates withheld]1996Disturbed areas along railroad. Phenology: flowering.RMRM631598 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.48789Ronald L. Hartman Tom Cramer1994730211U.S.A.WyomingSubletteGreen River Basin: Boulder Creek, 0.5 air mi NW of Boulder.-109.723342.75722134Streamside, marshy areas, and beneath Populus angustifolia. Phenology: flowering & fruiting.RMRM631599 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.48879Ronald L. Hartman Thomas Cramer1994730211U.S.A.WyomingSubletteGreen River Basin: New Fork River, ca 10 air mi SW of Boulder, from old wooden bridge NE to section line.-109.956442.632820882103Streamside and slope. Phenology: flowering.RMRM654665 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.113Timothy W. Chumley1994816228U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Lodgepole Creek on both sides of County Road 148, 5 air mi N of I-80, ca 23.4 air mi ENE of Cheyenne; ca 2 1/2 air mi N of Burns.-104.369141.23181658Flats above the creek. Phenology: flowering.RMRM654666 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.133Timothy W. Chumley1994817229U.S.A.WyomingLaramieLaramie Mountains: along Crow Creek W of County Road 109, ca 18 air mi W of Cheyenne; ca 11.1 air mi NE of Buford.-105.149241.216720212057On shores of spring-fed pond surrounded by willow thickets. Phenology: flowering & fruiting.RMRM654667 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.191Timothy W. Chumley1994818230U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along North Crow Creek off County Road 109, ca 1 1/2 air mi N from junction with Wyo Hwy 210 or Happy Jack Road, ca 16.4 air NW of Cheyenne.-105.086841.19661987Drier flats and slopes above the creek. Phenology: flowering.RMRM654668 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.237Timothy W. Chumley1994819231U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Crow Creek E of County Road 217 ca 1/2 mi, ca 16.2 air mi ESE of Cheyenne.-104.508541.10631716Along creek. Phenology: flowering & fruiting.RMRM654669 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.277Timothy W. Chumley1994824236U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: along Horse Creek between County Road 180 and County Road 182, ca 1/2 air mi E of Hawk Springs, ca 19.3 air mi SSW of Torrington.-104.255241.79113171323Along open banks of creek, in grazed pasture and along irrigation ditches in the pasture. Phenology: flowering & fruiting.RMRM654670 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.357Timothy W. Chumley1994825237U.S.A.WyomingLaramieSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: along Horse Creek ca 1 air mi W of I-80 off Nimmo, True or County Road 120, ca 22 air mi N of Cheyenne.-104.925641.455817681841Along creek with heavy willow thickets. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2101Thomas Cramer1994720201U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: vicinity of Coal Creek, ca 14 air mi N of Border Junction.-110.911742.420732439Sagebrush hills with aspen groves. Phenology: flowering.RMRM631644 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2229Thomas Cramer1994722203U.S.A.WyomingSubletteGreen River Basin: ca 12 air mi N of Cora.-110.006943.103623782439Pothole lakes and nearby meadows, aspen hillsides, Douglas fir stands, and sagebrush hillsides. Phenology: fruiting.RMRM631643 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2633Thomas Cramer1994731212U.S.A.WyomingSubletteGreen River Basin: McNinch Reservoirs 1 and 2, ca 8.5 air mi NW of Big Piney.-110.268942.60082179Reservoir edge, meadows, and sagebrush with outflow stream meadowed edges. Phenology: flowering & fruiting.RMRM631642 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2693Thomas Cramer1994731212U.S.A.WyomingSubletteGreen River Basin: Green River Supply Canal, ca 7 air mi S of Daniel.-110.056442.75862164Canal edge, meadows, willows, and sagebrush. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2763Thomas Cramer199484216U.S.A.WyomingLincolnGreen River Basin: east end of Fontenelle Gap, ca 15 air mi W of Fontenelle Reservoir.-110.418942.09312134Creekside meadows, willow thickets, and rockslides. Phenology: flowering.RMRM642551 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2814Thomas Cramer199484216U.S.A.WyomingLincolnGreen River Basin: Fontenelle Reservoir at Fontenelle Creek entrance, ca 6.5 air mi NW of Fontenelle Dam.-110.14542.09061981Reservoir edge, flats, sagebrush and rabbitbrush, and willow lined dry irrigation ditch. Phenology: flowering.RMRM631640 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2854Thomas Cramer199484216U.S.A.WyomingSubletteGreen River Basin: edge of Green River, ca 1 air mi N of La Barge.-110.191342.2742006Riverside mudflats, meadows, and willows. Phenology: flowering.RMRM631639 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3054Thomas Cramer199486218U.S.A.WyomingSubletteGreen River Basin: Blucher Creek just S of Bridger-Teton National Forest, ca 12 air mi E of Buckskin Crossing.-109.138642.556425302621Creekside meadows, sagebrush, and lodgepole pine stands. Phenology: flowering & fruiting.RMRM631638 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3206Thomas Cramer199488220U.S.A.WyomingLincolnGreen River Basin: County Road 315, ca 1 air mi SE of Viola.-110.34542.25422157Roadside meadows and willow lined ditches between irrigated fields. Phenology: flowering.RMRM631637 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3287Thomas Cramer199488220U.S.A.WyomingSubletteGreen River Basin: Sheep Creek, ca 8.5 air mi NW of Viola.-110.511142.346123472591Sagebrush canyon bottom and side with aspen and various conifer stands and a hillside spring. Phenology: flowering.RMRM631636 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3314Thomas Cramer1994810222U.S.A.WyomingSubletteGreen River Basin: Warren Bridge, ca 9 air mi N of Daniel Junction.-110.123343.01862286Riverside meadows, willows, and sagebrush. Phenology: flowering & fruiting.RMRM631635 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3446Thomas Cramer1994810222U.S.A.WyomingSubletteGreen River Basin: South Rim, ca 8 air mi NW of Warren Bridge.-110.224443.103622562591Douglas fir and lodgepole pine forest hillside, ridgetop meadows, and bottom sagebrush wetlands. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3753Thomas Cramer1994814226U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Hams Fork, ca 1 air mi N of Frontier.-110.528641.82581835Riverside meadows, sagebrush, and willows. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3848Thomas Cramer1994814226U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Lake Viva Naughton, ca 13 air mi NNW of Kemmerer.-110.656741.95832210Reservoir edge, meadows, and sagebrush. Phenology: flowering.RMRM631634 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4100Thomas Cramer Ben and Becky Cramer1994819231U.S.A.WyomingFremontGreen River Basin: Sweetwater River, ca 8.5 air mi SW of South Pass City.-108.916442.38422271Riverside meadows, willows, and sagebrush. Phenology: flowering & fruiting.RMRM631633 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4222Thomas Cramer Ben and Becky Cramer1994819231U.S.A.WyomingSweetwaterGreen River Basin: Big Sandy Reservoir and River, ca 9.5 air mi N of Farson.-109.415342.25862042Reservoir edge sagebrush, riverside meadows and sagebrush. Phenology: flowering.RMRM631632 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4286Thomas Cramer Ben and Becky Cramer1994821233U.S.A.WyomingSubletteGreen River Basin: Green River, ca 9 air mi S of Big Piney.-110.100342.40862027Riverside meadows, sagebrush, and sagebrush bluff. Phenology: flowering & fruiting.RMRM631606 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4364Thomas Cramer Ben and Becky Cramer1994821233U.S.A.WyomingSweetwaterGreen River Basin: Big Sandy River at Gasson Bridge, ca 20 air mi E of Fontenelle Dam.-109.676441.94221935Riverside meadows, sagebrush, and open hillsides. Phenology: fruiting.RMRM631605 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4395Thomas Cramer Ben and Becky Cramer1994821233U.S.A.WyomingSweetwaterGreen River Basin: Big Sandy River, ca 1 air mi SW of Farson.-109.4642.09812003Riverside meadows, sagebrush, and open hillsides. Phenology: flowering.RMRM631604 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4498Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnGreen River Basin: Green River, ca 6 air mi S of La Barge.-110.182942.17471984Riverside meadows and willows. Phenology: fruiting.RMRM631603 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4761Thomas Cramer1994825237U.S.A.WyomingSubletteGreen River Basin: Green River, ca 6.5 air mi W of Pinedale.-109.988142.872221642195Riverside mudbanks, sloughs, meadows, and willows and sandstone bluffside. Phenology: flowering & fruiting.RMRM631602 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4844Thomas Cramer1994825237U.S.A.WyomingSubletteGreen River Basin: South Cottonwood Creek, ca 11 air mi WSW of Daniel.-110.283642.78612271Creekside meadows, willows, and mudholes. Phenology: flowering.RMRM631601 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4951Thomas Cramer1994825237U.S.A.WyomingSubletteGreen River Basin: New Fork River, ca 3 air mi WNW of Boulder.-109.761442.765721342164Riverside meadows, willows and cottonwoods, stagnant ponds, irrigation ditchsides, and piney bluffside. Phenology: fruiting.RMRM631600 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4999Thomas Cramer1994827239U.S.A.WyomingSubletteGreen River Basin: ca 2 air mi S of Boulder.-109.709442.71662121Gravel roadsides and irrigation ditchsides. Phenology: flowering.RMRM649627 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5645Amy J. Roderick1998627178U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Platte River Parkway, ca 0.3 air mi N of Wyo Hwy 220; ca 1 air mi S of Mills.-106.371942.82921554Thickets along river and adjacent gravelly areas; canary grass common. Phenology: flowering.RMRM372103 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11930B. E. Nelson1984916260U.S.A.WyomingCrookBlack Hills: on the divide between Sand Creek and Shepherds Gulch; ca 10.3 air mi S of Beulah; ca 15.8 air mi E of Sundance.-104.062244.39421768Meadow around old beaver pond and on dam. Phenology: flowering & fruiting.RMRM372104 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9320B. E. Nelson Hollis Marriott1982714195U.S.A.WyomingCrookBlack Hills: Guidinger Spring S of Cement Ridge at the head of Rattlesnake Canyon, ca 4 air mi NE of Moskee; ca 16 air mi ESE of Sundance.-104.061744.351890Wet meadows and old beaver ponds. Phenology: flowering & fruiting.RMRM372119 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1784Hollis Marriott Dennis Horning198282214U.S.A.WyomingWeston[location and coordinates withheld]1890Moist meadow with grazed willow thickets. Phenology: vegetative only.RMRM372118 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1877Hollis Marriott198285217U.S.A.WyomingWeston[location and coordinates withheld]1341Disturbed soil near lake. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2007Hollis Marriott1982810222U.S.A.WyomingCrookBlack Hills: Devils Tower National Monument: Prairie Dog Town SE of road near culvert.-104.707444.5861173Along road. Phenology: flowering & fruiting.RMRM372108 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3859Hollis Marriott198375186U.S.A.WyomingCrookBlack Hills: between Goldie Road and Elkhorn Creek, ca 6 air mi WNW of Seely.-104.7458344.825561158Roadside in sagebrush grassland. Phenology: flowering & fruiting.RMRM372107 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4480Hollis Marriott1983712193U.S.A.WyomingCrook[location and coordinates withheld]1371Grassland and disturbed soil around lake. Phenology: flowering & fruiting.RMRM372106 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4791Hollis Marriott1983721202U.S.A.WyomingCrook[location and coordinates withheld]1310Deciduous thickets in north-trending draw. Phenology: flowering & fruiting.RMRM372117 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4851Hollis Marriott1983721202U.S.A.WyomingCrookBlack Hills: Keyhole Reservoir, south side W of Coulter Bay, ca 10 air mi NE of Moorcroft.-104.8144.36221250Disturbed sandy soil along lake margin. Phenology: flowering & fruiting.RMRM372116 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5123Hollis Marriott1983728209U.S.A.WyomingCrookBlack Hills, Redwater Creek ca 2.2 air mi WNW of Beulah.-104.140344.55331097Streambank Phenology: flowering & fruiting.RMRM371872 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5237Hollis Marriott198382214U.S.A.WyomingCrookBlack Hills: Goldie Divide near junction of Goldie and New Haven roads, ca 5 air mi NW of Hulett.-104.670344.72331371Ponderosa pine-bur oak forest, roadside. Phenology: flowering & fruiting.RMRM372115 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5290Hollis Marriott198382214U.S.A.WyomingCrookBlack Hills: Goldie Divide near junction of Goldie and New Haven roads, ca 5 air mi NW of Hulett.-104.670344.72331371Deciduous woods in moist draw below reservoir. Phenology: flowering & fruiting.RMRM371871 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5473Hollis Marriott198384216U.S.A.WyomingCrookBlack Hills, Coal Divide just N of I-90 (near parking area), ca 9 air mi SW of Sundance.-104.512344.32091463Grassland. Phenology: fruiting.RMRM372114 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5492Hollis Marriott198384216U.S.A.WyomingCrookBlack Hills, Coal Divide just N of I-90 (near parking area), ca 9 air mi SW of Sundance.-104.508144.31971463Ponderosa pine-bur oak forest, draw with small spring. Phenology: flowering & fruiting.RMRM371953 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5496Hollis Marriott198384216U.S.A.WyomingCrookBlack Hills, Coal Divide just N of I-90 (near parking area), ca 9 air mi SW of Sundance.-104.512344.32091463Ponderosa pine-bur oak forest, draw with small spring. Phenology: flowering & fruiting.RMRM372113 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6031Hollis Marriott198391244U.S.A.WyomingCrook[location and coordinates withheld]1280Margins of reservoir in grassland. Phenology: flowering & fruiting.RMRM372112 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8229Hollis Marriott1984730212U.S.A.WyomingCrook[location and coordinates withheld]1402Creek bottom in grassland-- streambanks. Phenology: flowering & fruiting.RMRM372111 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8371Hollis Marriott198482215U.S.A.WyomingWeston[location and coordinates withheld]1432Draw with pines and junipers, on sandy-rocky soil. Phenology: flowering & fruiting.RMRM336108 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.841Hollis Marriott1981722203U.S.A.WyomingCrookDevils Tower National Monument: below Spring #1.-104.71944.58581219Sandy soil at runoff pipe below spring with Pinus ponderosa. Common, lavendar heads, plant 4 ft tall. Phenology: flowering & fruiting.RMRM372110 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8538Hollis Marriott Dennis Horning198484217U.S.A.WyomingWeston[location and coordinates withheld]1768Creek bottom in spruce-pine forest. Phenology: flowering & fruiting.RMRM372109 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8829Hollis Marriott Dennis Horning198488221U.S.A.WyomingWestonBlack Hills: Elk Mountain area, east side near USFS Rd 818; ca 14 air mi SE of Newcastle.-104.050343.69111524Roadcut. Phenology: flowering & fruiting.RMRM372090 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8901Hollis Marriott1984810223U.S.A.WyomingWeston[location and coordinates withheld]1783Sedge meadow next to reservoir. Phenology: flowering & fruiting.RMRM372105 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9185Hollis Marriott1984818231U.S.A.WyomingCrookBlack Hills: Inyan Kara Mountain (east half); ca 13.5 air mi S of Sundance.-104.344744.201391615In draw east of mountain with chokecherry, hawthorne, and snowberry. Phenology: flowering & fruiting.RMRM324197 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4949Keith H. Dueholm1978726207U.S.A.WyomingCrookPowder River Basin: along Little Missouri River, ca 7 air mi N of Oshoto.-104.910844.693061189Flats and floodplain along river; floodplain. Phenology: flowering & fruiting.RMRM324192 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6043Keith H. Dueholm1978814226U.S.A.WyomingWestonPowder River Basin: ca 2.5 air mi S of Clareton.-104.709243.66171310Plains along right-of-way, sandstone outcrops, ditch; ditch. Phenology: flowering & fruiting.RMRM372102 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.15889Ronald L. Hartman1983711192U.S.A.WyomingCrookBlack Hills: Belle Fourche River: 16 air mi NE of Alva.-104.224444.87253250Shale bluffs, riverbottoms, and sagebrush plains above; flood plains. Phenology: flowering & fruiting.RMRM372101 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.18176Ronald L. Hartman1984715197U.S.A.WyomingCrookBlack Hills: Tomcat Creek Oil Field, ca 19 air mi SW of Sundance.-104.7080644.27691310Pinus ponderosa woodland on rolling hills of shale with wet drainages, shale badlands, Sarcobatus vermiculatus flats, and sandy sagebrush Artemisia slopes; open wetlands. Phenology: flowering & fruiting.RMRM793828 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.236Patricia P. Douglas N. Hastings199777188U.S.A.WyomingSheridanSheridan Training Area: stock pond ca 0.6 km N of Peak 4290 (336500, 4967320), ca 2.3 km SW of Peak 4244 (338560, 4969020). 336420E, 4967820N.1240Level palustrine in clay (mud), soil series Parmleed-Bidman association and Samday-Gayhart-Hilight clay loams, with Ranunculus aquatilis, Sagittaria cuneata, Carex sparganioides, Juncus sp. Phenology: flowering.RMRM290608 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.71-18R. Owen Asplund197177188U.S.A.WyomingAlbanyLaramie.-105.576441.3119Periphery of LaPele Park. Phenology: buds.RMRM823326 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10544Robert D. Dorn2008730212U.S.A.WyomingCrookBear Lodge Mountains: ca 2 mi SE of Cook Lake.-104.36833344.5683331463Stream bank with Rumex and Bromus. Flower lavender; 1 m high. Phenology: flowering & fruiting.RMRM823334 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10553Robert D. Dorn2008731213U.S.A.WyomingWestonNear Morrisey.-104.36833343.5233331189Moist depression with Helianthus and Elymus. Flower lavender. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.75021B. E. Nelson2008714196U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: Sage Creek Campground and vicinity on Sage Creek, ca 19 air mi ESE of Bridger.-108.552145.211716821731In campground, most of which are pure stands of smooth brome. Phenology: buds.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.75404B. E. Nelson2008720202U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: ridge between Dry Head and Punch Bowl creeks from Crow Indian Reservation boundary SW along trail, ca 28-29 air mi ESE of Bridger.-108.369845.21611981Brushy spring and seep area. Phenology: buds.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.76179B. E. Nelson2008812225U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: spring complex near the head of Dry Head Creek S of Harsten Flat, ca 26 air mi ESE of Bridger.-108.420945.195820122073Wet to dry meadow, around springs, and along stream. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.76388B. E. Nelson2008815228U.S.A.MontanaCarbonBighorn Basin: along a tributary of South Fork Bridger Creek just W of Pryor Mountain Road, ca 8 air mi SE of Bridger.-108.815545.20712621323Along stream through redbeds and adjacent wet to dry meadows dominated by Glycyrrhiza. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.76505B. E. Nelson2008819232U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: west side of Cave Ridge ca 1/2-3/4 mi W of Big Ice Cave, ca 26.5 air mi ESE of Bridger.-108.40845.163522312292Clear cut in Douglas fir forest with little regrowth. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.76600B. E. Nelson2008819232U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: between Tibbs Hollow and Mill Hollow just S of Tie Flat or Forest Road 2104 on the lower slope of Big Pryor Mountain, ca 25 air mi ESE of Bridger.-108.452545.1572134Disturbed area on red clay. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6925B. E. Nelson1980810223U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: on Big Pryor Mountain, ca 26 air mi SE of Bridger.-108.440745.10523782439Disturbed area around an old shack. Phenology: flowering.RMRM827906 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4088Brian Elliott1998724205U.S.A.ColoradoCusterWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: along Forest Road 198 from Luthern Camp to Balman Reservoir, NW of Westcliffe.-105.66638.265425602865Mixed conifer and Quercus gambellii. Phenology: fruiting.RMRM827905 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4551Brian Elliott1998731212U.S.A.ColoradoFremontWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: on the Rainbow Trail from the end of Forest Road 6 to junction of Bushnell Lakes Trail, SW of Coaldale.-105.832938.320723782865Mixed conifer. Phenology: flowering & fruiting.RMRM827904 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4770Brian Elliott199882214U.S.A.ColoradoSaguache[location and coordinates withheld]2439Pasture; swampy area in bottom of valley; roadside. Phenology: flowering.RMRM840003 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6424Ben Legler2007723204U.S.A.New MexicoColfaxVermejo Park Ranch: 0.4 air mi SE of junction of Lookout Canyon and Cerrososo Canyon; 18 air mi NNW of Cimarron.-105.009833336.764361112455Sandy road shoulders of small dirt road leading to oil well pad, with scattered non-native grasses and weeds. Heads pinkish-purple; stems scattered from deep rhizomes; locally common. Photographed. Phenology: flowering & fruiting.RMRM840002 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6568Ben Legler2007726207U.S.A.New MexicoColfaxVermejo Park Ranch: old coal strip mine on west side of York Canyon just upsteam of its junction with Road Canyon; near west end of NM Hwy 555.-104.928305636.870888892309Coal strip mine covering many acres, now capped with a thin layer of soil and revegetated with Atriplex canescens, grasses, and herbaceous cover. Heads pinkish-purple; occasional. Phenology: flowering & fruiting.RMRM840001 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6817Ben Legler2007731212U.S.A.New MexicoColfaxVermejo Park Ranch: small pond on ridgeline between Frankies Canyon and East Fork Chimney Canyon, 6.6 air mi NE of Casa Grande and 1.7 air mi S of NM Hwy 555.-104.8636.907583332533Natural seasonal pond dominated by Carex pellita, Agrostis, Eleocharis acicularis. Flowers reddish-purple; occasional in dry soil in surrounding meadows. Phenology: flowering & fruiting.RMRM840456 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7615Ben Legler2007813225U.S.A.New MexicoColfaxVermejo Park Ranch: pond on south side of Vermejo River in Vermejo Park just W of employee housing area; 1.6 air mi WNW of Casa Grande.-105.00636.897805562305Shallow muddy pond in old river oxbow, with Juncus spp., Sparganium emersum, Potamogeton spp., Carex spp. Heads pale purple; abundant in moist soil around pond. Phenology: flowering & fruiting.RMRM840455 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7664Ben Legler2007814226U.S.A.New MexicoColfaxVermejo Park Ranch: south and east shores of Bartlett Lake; 8.2 air mi W of Casa Grande.-105.123888936.901666672646Lake shallows with sandy bottom, dominated by Potamogeton natans, P. foliosus, Myriophyllum sibiricum, and Ceratophyllum demersum; shoreline dominated by Schoenoplectus acutus. Heads purple; frequent along edge of shoreline in wet sand. Phenology: flowering & fruiting.RMRM840454 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7832Ben Legler2007816228U.S.A.New MexicoColfaxVermejo Park Ranch: along banks of Ponil Creek 0.7 air mi downstream (SE of) junction of North Ponil Creek and South Ponil Creek; 5.3 air mi NW of Cimarron.-104.956388936.579972222027Sandy creek bottoms dominated by dense growth of Symphoricarpos occidentalis, Conyza canadensis, and Bromus, with scattered Alnus incana and Juniperus scopulorum. Heads purple; scattered along creek bottoms. Phenology: flowering & fruiting.RMRM840452 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9750Ben Legler2008715197U.S.A.New MexicoColfaxVermejo Park Ranch: in Tin Pan Canyon 1.0 air mi upstream from (W of) its junction with Dillon Canyon; 6.4 air mi NW of Raton.-104.54130636.9421622178Moist stream bottoms and barely flowing stream; with Robinia neomexicana, Juniperus scopulorum, Eleocharis, Juncus, and grasses. Flowers pink-purple; large patch by stream. Specimen GPS: 36.942055, -104.541679. Phenology: flowering.RMRM840451 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9925Ben Legler2008719201U.S.A.New MexicoColfaxVermejo Park Ranch: along banks of the Cimarron River 2.6 air mi W of Cimarron.-104.96175436.5144541993Silty river bottoms, with Ribes aureum, Rudbeckia laciniata, and Chenopodium. Heads pink; common. Specimen GPS: 36.514473, -104.961754. Phenology: flowering.RMRM840450 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10331Ben Legler200885218U.S.A.New MexicoColfaxVermejo Park Ranch: crest of ridge at north end of Spring Canyon between Spring Canyon and the Canadian River, 0.2 air mi S of Colorado.-105.03976436.9909552764Old burn with scattered standing dead trees, now dominated by mesic meadows with Danthonia parryi, Carex spp., Erigeron flagellaris, and Poa; some areas salvage logged. Flowers pure white; large patch of plants in disturbed rocky soil. Photographed. Specimen GPS: 36.990562, -105.040215. Phenology: flowering.RMRM840449 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10532Ben Legler2008810223U.S.A.New MexicoColfaxVermejo Park Ranch: on south side of Vermejo River 2.2 air mi due W of I-25 and 3.5 air mi SW of Maxwell.-104.60163136.5093121799Moist, silty river bottoms with Tamarix chinensis, Helianthus annuus, Kochia scoparia, and Mirabilis nyctaginea. Heads pink; rhizomatous, forming large patches along river. Specimen GPS: 36.51342, -104.601494. Phenology: flowering & fruiting.RMUSFS867642 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.73379B. E. Nelson2007728209U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Porcupine Creek from trailhead ro 3/4 air mi ESE, ca 3-3.5 air mi SSE of intersection of U.S. Hwy 191 and Mont Hwy 64 (Big Sky), ca 33 air mi SSW of Bozeman.-111.24245.223418651926Meadow draw on steep, stony slope. Phenology: flowering.RMUSFS867643 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.73387B. E. Nelson2007728209U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Forest Road 984 ca 1/4 above the Portal Creek bridge, ca 6 air mi ENE of intersection of U.S. Hwy 191 and Mont Hwy 64 (Big Sky), ca 27 air mi S of Bozeman.-111.140445.294421822207Roadside and adjacent road cut. Phenology: flowering.RMUSFS867644 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.73679B. E. Nelson200781213U.S.A.MontanaSweet GrassBeartooth Mountains: Gallatin National Forest: East Boulder Plateau: along East Boulder River in Placer Basin just above Forge Creek, ca 27 air mi SSW of Big Timber.-110.086345.42126522664Moist to wet meadows and along spring flows. Phenology: flowering.RMUSFS867645 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.73793B. E. Nelson200783215U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Big Bear Creek at crossing of Cliff Creek or Forest Road 6989 ca 1.5 air mi NW of Wheeler Mountain, ca 11.5 air mi SSW of Bozeman.-111.111945.517617861841Logging road and other disturbed areas in and near the canyon bottom. Phenology: flowering.RMUSFS867646 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.73951B. E. Nelson200784216U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: saddle between head of Yankee and Jack creeks on Forest Road 3138 ca 3/4 air mi SW of Noon Point, ca 15 air mi SW of Bozeman.-111.222845.496821822195Along abandoned logging road. Phenology: flowering & fruiting.RMUSFS867633 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2403Emily Elliott Ken Elliott200776187U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Forest Road 1046, ca 12 air mi S of Bozeman.-111.009945.503820122073Mixed conifer overstory with a Vaccinium understory and a stream. Phenology: fruiting.RMUSFS867634 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2635Emily Elliott Ken Elliott200776187U.S.A.MontanaGallatinGallatin Range: Gallatin National Forest: along Forest Road 62, ca 1 road mi from forest boundary, ca 8.5 air mi S of Bozeman.-111.071745.563717311743Roadside, disturbed area, and creek area. Phenology: fruiting.RMUSFS867635 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2773Emily Elliott Ken Elliott200778189U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: along Forest Road 348 near Sixmile Creek, ca 30 air mi SSW of Livingston.-110.752345.243217921804Riparian area between road and creek. Phenology: flowering.RMUSFS864415 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3176Emily Elliott Dean Sherman2007716197U.S.A.MontanaStillwaterBeartooth Mountains: Custer National Forest: trail along Stillwater River up to Sioux Charley Lake, ca 34.5 air mi WNW of Red Lodge.-109.905545.351415851768Mixed conifer forest along river, with streamlets and cottonwoods interspersed; granite cliffs at beginning of trail. Phenology: flowering & fruiting.RMUSFS864416 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3667Emily Elliott Brian Elliott and Bonnie Hiedel2007727208U.S.A.MontanaParkBeartooth Mountains: Custer National Forest: E of U.S. Hwy 212 and Clarks Fork Yellowstone and Broadwater rivers on trail to Vernon Lake, ca 31-32.5 air mi WSW of Red Lodge.-109.869345.017323992530Moist spruce-fir forest with Vaccinium dominating the understory. Phenology: flowering.RMUSFS867636 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4129Emily Elliott Brian Elliott200781213U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: at the end of Forest Road 2508 between Passage and Mill creeks, ca 28 air mi SSE of Livingston.-110.496245.265521032109Spruce-fir forest that was logged 20-30 years ago. Phenology: flowering & fruiting.RMRM916765 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3132Laura E. Lukas2007725206U.S.A.WyomingAlbanyMedicine Bow Mountains: near Lake Owen Creek, ca 1 air mi E of Lake Owen, ca 11 air mi S of Centennial.-106.065241.144823282506Margin between burnt sagebrush steppe and burnt pine-spruce dominated draw. Phenology: flowering & fruiting.RMRM916764 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4430Laura E. Lukas2007813225U.S.A.WyomingCarbonMedicine Bow Mountains: along Forest Road 208 1F, ca 1 air mi S of South Fork Corral Creek, ca 5 air mi S of Ryan Park; ca 21 air mi SE of Saratoga.-106.493841.25532735Clear-cut lodgepole pine forest with some regrowth of trees 2-3 feet tall, partially burnt. Phenology: flowering.RMRM916766 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4773Laura E. Lukas2007817229U.S.A.WyomingAlbanyMedicine Bow Mountains: Jelm Mountain, ca 1 mi E of New Jelm, ca 2 air mi SE of Woods Landing.-105.997541.06422410In draw. Phenology: flowering.RMRM929566 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.75948B. E. Nelson200884217U.S.A.WyomingCarbonHanna Basin: Halleck Ridge from Rattlesnake Pass NE ca 2 air mi, ca 10-12 air mi S of Hanna; ca 8.5-9 air mi W of the town of Elk Mountain.-106.583441.699622922447Moist to wet meadow and along small stream. Phenology: flowering & fruiting.RMRM929565 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.76020B. E. Nelson200885218U.S.A.WyomingCarbonSierra Madre: Miner Creek and canyons and ridge to the NW, ca 1/4 below confluence of North and South forks, ca 4 air mi SSW of Encampment.-106.818341.148523322487Meadows along the stream. Phenology: flowering & fruiting.RMRM916756 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8256Laura E. Lukas2008818231U.S.A.WyomingAlbanyLaramie Plains: right-of-way along west side of U.S. Hwy 287 and Grant Creek, ca 1.5 air mi SE of Tie Siding; ca 18 air mi S of Laramie.-105.482241.06682312Right-of-way on plains, along tiny creek. Phenology: flowering.RMRM916759 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8544Laura E. Lukas2008831244U.S.A.WyomingCarbonMedicine Bow Mountains: Carlson Creek N and S of Forest Road 114, ca 15 air mi NW of Centennial; ca 7 air mi SW of Arlington.-106.276241.50062873Picea-Abies forest along creek edge. Phenology: flowering.RMRM929567 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11048Laura E. Lukas2009821233U.S.A.WyomingAlbanyMedicine Bow Mountains: S of Ring Mountain, area of Maggie Creek, ca 1 air mi SE of intersection of Wyo Hwy 10 and Gyp Quarry Road, ca 7 air mi SSE of Woods Landing and ca 10 air mi SE of Foxpark.-105.983941.01472441Banks of creek in gully surrounded by sagebrush hills. Phenology: flowering.RM916758 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.176Linda Shoemaker Halli Buller1992822235U.S.A.WyomingAlbanyMedicine Bow Mountains: Red Mountain and vicinity: two track road to summit of Red Mountain, ca 5.5 air mi SE of Jelm Mountain.-105.966141.0236124392454Disturbed area on sagebrush-grassland flats. Phenology: flowering.RMRM755921 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.36Jeanette Haddock199796249U.S.A.WyomingAlbanySherman Mountains: I-80 from Laramie E 11 mi to exit 323 (Happy Jack); turn left off exit on Wyo Hwy 210, right on Forest Road 705 entering into Summit Information Center.2652Along roadside in sandy loam, east-facing. Abundant; flowers purple; herb 3-4 dm tall. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3634Rick McNeill2008814227U.S.A.MontanaTetonLewis and Clark National Forest: Front Range: Cave Mountain Campground, on Forest Road 144, junction of West Fork and Middle Fork Teton River, ca 7 air mi SE of West Fork Teton River Campground, ca 7 air mi NE of Rocky Mountain.-112.722547.88841565Riparian with numerous beaver dams. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.88310Ronald L. Hartman2008812225U.S.A.MontanaMeagherBair Reservoir on North Fork Musselshell River along U.S. Hwy 12.-110.569846.58361629Receding shoreland and slope above. Phenology: flowering.RMUSFS867637 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5078Emily Elliott Brian Elliott2008624176U.S.A.MontanaSweet GrassBeartooth Mountains: Gallatin National Forest: NE of Derby Mountain off Forest Road 6674, ca 17.5 air mi SSE of Big Timber.-109.833745.59931737Reparian area and moist meadow in recently burned area. Phenology: flowering & fruiting.RMUSFS867638 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6792Emily Elliott Brian Elliott200882215U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: from West Boulder Trailhead, along trail and West Boulder River to West Boulder Meadows, ca 26-27 air mi SW of Big Timber.-110.308245.546616821737Moist aspen grove with Pinus contorta encroachment and a mixed forb understory. Phenology: flowering & fruiting.RMUSFS867639 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7311Emily Elliott Bernadette Kuhn2008812225U.S.A.MontanaCarbonBeartooth Mountains: Gallatin National Forest: from Wyoming along trail NNE towards Crazy Mountain, ca 26-27.5 air mi WSW of Red Lodge.-109.747244.99824392926Mixed conifer forest dominated by Pinus contorta with scattered dry meadows. Phenology: flowering & fruiting.RMUSFS867640 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7889Emily Elliott Brian Elliott2008823236U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: Absaroka/ Beartooth Wilderness: along Lake Abundance Creek to Rock Creek, ca 7-10 air mi NW of Cooke City, .-110.025645.09572530Approximately 20-year-old burn area; now forb dominated with Pinus contorta regeneration, scattered wet areas. Phenology: fruiting.RMUSFS867641 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7941Emily Elliott Brian Elliott2008824237U.S.A.MontanaParkAbsaroka Range: Gallatin National Forest: Absaroka/ Beartooth Wilderness: along Rock Creek Trail above Lake Abundance Creek, ca 10 air mi NW of Cooke City, .-110.093745.105622072585Approximately 20-year-old burned area, now forb dominated with Pinus contorta regeneration. Phenology: flowering & fruiting.RMRM827931 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.61193Ronald L. Hartman1998615166U.S.A.ColoradoPuebloWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: old highway at Stem Beach exit of I-25.-104.523338.16641493Disturbed roadside. Phenology: flowering & fruiting.RMRM649628 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6472Amy J. Roderick1998714195U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Goldeneye Wildlife and Recreation Area: Burlington Lake, N of U.S. Hwy 20-26, ca 22 road mi to Casper.-106.706343.01891676Greasewood-sagebrush flats; alkaline lake shores. Phenology: flowering.RMUSFS885686 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78198B. E. Nelson2009725206U.S.A.MontanaPowder RiverCuster National Forest: Ashland District: vicinity of Cow Creek Camp/ Picnicground on Cow Creek ca 5.5 air mi W of Fort Howes Work Center, ca 25 air mi S Ashland.-106.244745.312911731219Open, southerly-facing slope with scattered ponderosa pine and adjacent open ridge-top. Phenology: flowering.RMUSFS885685 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78271B. E. Nelson2009726207U.S.A.MontanaPowder RiverCuster National Forest: Ashland District: ridge and slope between Yankee Spring and South Fork Bloom Creek and along the creek, ca air 28.5 mi SW of Broadus.-105.915445.23281170Stream bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78336B. E. Nelson2009728209U.S.A.MontanaCarterAlong Little Missouri River or South Camp Crook Road just S of Clay Pigeon Road, ca 10 air mi NE of Albion; ca 23 air mi NE of Alzada.-104.152745.2991990Stream bank and adjacent clay flats. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78362B. E. Nelson2009728209U.S.A.MontanaCarterAlong North Butte Creek between Hamilton Creek and Little Missouri River on the south side of Mont Hwy 323, ca 2 air mi NW of Albion; ca 13.5 air mi N of Alzada.-104.309645.20510091012Dry stream bed and adjacent steep banks and bench with green ash and occasional boxelder and snowberry thickets. Phenology: flowering & fruiting.RMUSFS885684 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78671B. E. Nelson200982214U.S.A.South DakotaHardingCuster National Forest: East Short Pine Hills: along a draw leading into Ward Gulch and to Spring No. 1, ca 17 air mi SW of Buffalo.-103.716845.371211151189Slash burn areas. Phenology: flowering & fruiting.RMUSFS885683 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78710B. E. Nelson200982214U.S.A.South DakotaHardingCuster National Forest: East Short Pine Hills: vicinity of Spring No. 3 just below and NE of Moreau Peak, ca 18 air mi SSW of Buffalo.-103.707145.346510971146Narrow bushy draw with aspen, green ash, and chokecherry with wet areas. Phenology: flowering & fruiting.RMUSFS885682 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78756B. E. Nelson200984216U.S.A.MontanaCarterCuster National Forest: Long Pines: on the divide SE of Devils Canyon, ca 21 air mi SE of Ekalaka.-104.227945.680612071243Slopes and ravines of a burned area. Phenology: flowering & fruiting.RMUSFS885681 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.78849B. E. Nelson200984216U.S.A.MontanaCarterCuster National Forest: Long Pines: at the mouth of Spring Canyon and just below at the northwest base of Rustler Ridge, ca 20.5 air mi SE of Ekalaka.-104.216245.70811091189Bushy stream bank and adjacent moist bench in open ponderosa pine forest. Phenology: flowering.RMUSFS883303 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1587Hans Hallman200974185U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: along Beaver Creek Road or Forest Road 4133 at and around Road Creek Reservoir, ca 2 air mi NW of Holiday Campground and ca 14.5 air mi ENE of Ashland.-105.997745.653210971109In and around drainage and reservoir, dominated by sedges and grasses. Phenology: flowering.RMUSFS885694 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1888Hans Hallman2009710191U.S.A.MontanaCarterCuster National Forest: Long Pines: just W of the state line, from Forest Road 3118 to an unnamed reservoir ca 1 air mi N of road, ca 7-8 air mi NNW of Camp Crook, SD.-104.049245.640810181030Grass-dominated meadow. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2234Hans Hallman2009716197U.S.A.South DakotaHardingUnnamed tributary of South Fork Moreau River, ca 0.5 air mi SW of County Road 897 and ca 3 air mi S of junction of 897 and Dillon Road, ca 21 air mi SSE of Camp Crook.-103.80845.2632948963Grazing land dominated by grasses. Phenology: flowering & fruiting.RMUSFS885693 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2423Hans Hallman2009717198U.S.A.South DakotaHardingCuster National Forest: Slim Buttes: just SW of Summit Pass on SD Hwy 79, ca 23.5 air mi SE of Buffalo.-103.165745.372310061012Green ash and grass-dominated roadside. Phenology: flowering.RMUSFS885692 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2635Hans Hallman2009722203U.S.A.MontanaRosebudCuster National Forest: Ashland Ranger District: in and around Blacks Pond off of Forest Road 4021, ca 17 air mi S of Ashland.-106.288345.347211121121Mixed ponderosa pine and green ash upland. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2706Hans Hallman2009722203U.S.A.MontanaPowder RiverCa 0.5 air mi E of Mont Hwy 484 or Otter Creek Road, ca 6.5 air mi N of Fort Howes and ca 15 air mi SSE of Ashland.-106.16245.39359871003Grass-dominated grazing land. Phenology: flowering & fruiting.RMUSFS885691 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2759Hans Hallman2009723204U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in and around Seymour Reservoir, ca 0.5 air mi N of Taylor Creek or Forest Road 4127, ca 7 air mi SE of Fort Howes and ca 27 air mi SSE of Ashland.-106.031645.246511341158About reservoir. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3106Hans Hallman2009728209U.S.A.MontanaCarterIn and around a drainage near the head of Ewalt Draw, off of Ridge Road, ca 7 air mi WNW of its junction with Mont Hwy 323, ca 25.5 air mi S of Ekalaka.-104.568245.528610511082Rolling grazing land dominated by sagebrush and grasses. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3208Hans Hallman2009728209U.S.A.MontanaCarterIn and along Chito Creek SW of Dead Boy Divide and ca 10.5 air mi E of Saddle Butte, ca 18.5 air mi SSW of Ekalaka.-104.569345.606810181024In and around creek bottom surrounded by grass-dominated grazing land. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3250Hans Hallman2009728209U.S.A.MontanaCarterJust off of Mont Hwy 323 at Skull Creek, ca 3 road mi S of junction with Tie Creek Road, ca 23.5 air mi SSE of Ekalaka.-104.38145.5679931003Mixed grass and badlands. Phenology: flowering.RMUSFS885690 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3311Hans Hallman2009730211U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: in the vicinity of Russel Spring just S of Camp Needmore off of Forest Road 3104, ca 6.5 air mi SE of Ekalaka.-104.457145.823311611167Moist riparian area dominated by grasses. Phenology: flowering.RMUSFS883304 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3543Hans Hallman200981213U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: Cook Mountain Hiking and Riding Area: in the vicinity of Cliff Spring and areas SE, W of Forest Road 4772, ca 9 air mi NE of Ashland.-106.135145.671310791091Draw dominated by boxelder, ponderosa pine, and snowberry. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3688Hans Hallman200982214U.S.A.MontanaCarterJust E of Beaver Creek Road ca 1.5 air mi NW of Red Butte, ca 15.5 air mi NNE of Ashland.-106.160445.7987963981Grass-dominated upland with scattered ponderosa pine. Phenology: fruiting.RMUSFS885689 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4017Hans Hallman2009811223U.S.A.MontanaCarterCuster National Forest: Long Pines: in Cheesman Draw, just NE of Pioneer Cemetery off of Forest Road 3045, ca 8.5 air mi WNW of Camp Cook, SD.-104.14445.586211061118In and near margin of reservoir. Phenology: flowering & fruiting.RMUSFS885688 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4072Hans Hallman2009813225U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: just N of Fifteenmile Creek or Forest Road 4094, ca 1 air mi NNE of Dalzells Spring, ca 21 air mi ESE of Ashland.-105.925145.403711521170Green ash-dominated draw. Phenology: flowering.RMRM909240 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4200Hans Hallman G. Gust2009816228U.S.A.South DakotaHardingCuster National Forest: North Cave Hills: in a tributary of Schleichart Draw above Schleichart Draw Reservoir, W of Forest Road 3130, ca 17 air mi NNE of Buffalo.-103.468945.82521006Green ash and chokecherry-dominated draw. Phenology: flowering.RMRM909239 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4358Hans Hallman G. Gust2009816228U.S.A.MontanaCarterCuster National Forest: Long Pines: just E of Forest Road 3117, ca 1/4 air mi SE of Iron Spring, ca 18 air mi NW of Camp Crook, SD.-104.219245.724310601091Grass-dominated meadow into wind-thrown ponderosa pine woodland. Phenology: flowering & fruiting.RMUSFS909238 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4488Hans Hallman G. Gust2009818230U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: in and around McNab Pond, at terminus of Forest Road 1401, ca 0.5 air mi NE of Mont Hwy 323, ca 7 air mi SE of Ekalaka.-104.431445.836210421073In and around pond dominated by Scirpus and Typha spp. and grasses on its margin. Phenology: flowering & fruiting.RMRM909237 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4686Hans Hallman G. Gust2009818230U.S.A.MontanaCarterCuster National Forest: Ekalaka Hills: in the vicinity of Gundlach Well off of Forest Road 3103, ca 6 air mi ESE of Ekalaka.-104.436745.865811581207Grass and ponderosa pine-dominated open woodland. Phenology: flowering.RMRM827930 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.62450Ronald L. Hartman1998722203U.S.A.ColoradoLas AnimasWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Picketwire Valley, ca 1 mi E of Cordova Plaza.-104.80237.12722042Roadside. Phenology: flowering & fruiting.RMRM304838 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.959L. M. Mayer I. J. Mayer1977823235U.S.A.WyomingSheridanWhitney Coal Site: Acme Quadrangle.-106.918544.959810791155Dry soil in shade of populus trees; riparian woodland. Acme Quad. Phenology: flowering.RMRM914226 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.42130Erwin F. Evert2007820232U.S.A.WyomingTetonYellowstone Plateau: Yellowstone National Park: along the east shore of Shoshone Lake, ca 2.5 mi SSE of the mouth of DeLacy Creek.-110.670244.38642375Gravel berm on beach with Rubus idaeus, Fragaria virginiana, Smilacina stellata, and Juniperus communis var. depressa. Acc. No. YELLO-0030, YELLO 9145 Phenology: flowering & fruiting.RMRM908729 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.39641Erwin F. Evert2002731212U.S.A.IdahoFremontYellowstone Plateau: Targhee National Forest: along Rock Creek, ca 8 mi W of Cave Falls Campground, ca 16 mi E of Ashton.-111.169944.10061753Riparian community with Salix geyeriana, Alnus incana ssp. tenuifolia, and Crataegus chrysocarpa. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.12769Stuart Markow2004812225U.S.A.OregonUnionBlue Mountains: Wallowa-Whitman National Forest: Starkey Experimental Forest and Range: west side of Forest Road 100, ca 0.3 air mi S of intersection with Forest Road 2120, ca 1/4 air mi N of Bally Mountain summit, ca 24 air mi SW of La Grande.13411371Regenerating burned coniferous forest with Abies grandis, Pinus ponderosa, Pinus contorta, Larix occidentalis, Linnaea borealis, Carex geyeri, Poa pratensis, and Bromus marginatus. Phenology: flowering.RMRM649629 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6705Amy J. Roderick1998718199U.S.A.WyomingNatrona[location and coordinates withheld]1676Wet pasture surrounded by sagebrush, greasewood, and gramma grass. Phenology: flowering & fruiting.RMRM841079 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.451Bethany Lewis2007718199U.S.A.ColoradoJacksonNorth Park: Arapaho National Wildlife Refuge: ca 5 air mi SW of Walden.-106.35413340.6677172490Near open water, grassland meadow and willow riparian area. Purple flowers. 7.5' Walden Quad Phenology: flowering.RMRM841238 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.503Bethany Lewis2007728209U.S.A.WyomingAlbanyLaramie Plains: Hutton Lake National Wildlife Refuge: ca 10 air mi SW of Laramie.-105.71786741.1687832207Greasewood/grassland uplands. Purple flowers. 7.5' hutton Lake Quad Phenology: flowering.RMRM831992 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10206Brian Elliott Pete Schneider1999731212U.S.A.ColoradoCostillaWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: San Luis Valley: Forbes Trinchera Ranch: ca 2 mi E of Fort Garland on U.S. Hwy 160.-105.394437.42922408Along the railroad right-of-way and roadside. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5566Hans Hallman2010630181U.S.A.MontanaPowder RiverCa 1 air mi N of Belle Creek Road, ca 4 air mi E of its junction with Mont Hwy 59, ca 19 air mi SSE of Broadus.-105.244945.197610361091Grass and sagebrush-dominated grazing land with some moist draws and scattered small areas of badlands. Phenology: flowering.RMRM909236 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5765Hans Hallman201074185U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: just N of Forest Road 4410, ca 2 air mi E of Yager Butte, ca 17 air mi ESE of Ashland.-105.984345.458611151158In and around flowing-water hardwood draw with green ash, boxelder, chokecherry, snowberry, and Monarda. Phenology: flowering.RMRM832034 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10267Brian Elliott Pete Schneider1999731212U.S.A.ColoradoCostillaWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: San Luis Valley: ca 0.5 air mi N of New Mexico on Colo Hwy 159.-105.519437.00282347Roadside. Phenology: flowering & fruiting.RMRM832033 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10283Brian Elliott Pete Schneider1999731212U.S.A.ColoradoHuerfano[location and coordinates withheld]1966Around a large pond; riparian. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5975Hans Hallman201078189U.S.A.MontanaPowder RiverAlong Powderville Road East in vicinity of Oliphant Butte, ca 31-33 air mi WSW of Ekalaka.-105.122545.6831871Stream bank dominated by Juncus and grasses. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6467Hans Hallman2010719200U.S.A.MontanaPowder RiverIn the vicinity of unnamed reservoir on Flood Creek, ca 0.5 air mi E of Moorehead Road, ca 15 air mi SW of Broadus.-105.634445.29419871024Grass and sagebrush-dominated grazing land with scattered badlands and gravelly slopes. Phenology: fruiting.RMRM909235 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6516Hans Hallman2010721202U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Cabin Spring near the junction of Forest roads 4425 and 4776D, ca 1.5 air mi N of U.S. Hwy 212, ca 15 air mi E of Ashland.-105.955445.575811121158Ponderosa pine woodland with grass-dominated understory. Phenology: flowering.RMRM909234 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6586Hans Hallman2010723204U.S.A.South DakotaHardingCuster National Forest: Slim Buttes: in the vicinity of Road Draw Spring No. 2, SE of JB Pass, E of Forest Road 3148, ca 20 air mi SE of Buffalo.-103.21445.407410421060In the vicinity of hardwood draw with green ash, boxelder, and chokecherry. Phenology: flowering.RMRM909233 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6838Hans Hallman2010727208U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Cow Creek, just S of Forest Road 4095, ca 1.5 air mi W of Otter Creek Road or Mont Hwy 484, ca 2 air mi WSW of Fort Howes.-106.182745.29210481097Burned hillside with rocky, sandy soils and scattered rock outcrops. Phenology: flowering.RMRM909232 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6939Hans Hallman2010728209U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Dry Gulch Reservoir E of Forest Road 4432D, ca 3.5 air mi E of Fort Howes.-106.087245.300211581164In and near shore of reservoir. Phenology: flowering & fruiting.RMRM909231 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7094Hans Hallman2010730211U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in Bridge Canyon, ca 1 air mi E of Taylor Butte, ca 2 air mi ESE of Fort Howes.-106.117945.2869East-facing slope in hardwood draw with Prunus and grass-dominated understory. Phenology: flowering.RMUSFS885687 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7564Hans Hallman2010815227U.S.A.MontanaRosebudCuster National Forest: Ashland Ranger District: Tongue River Breaks Hiking and Riding Area: in the vicinity of Black Eagle Spring N of Forest Road 4023, ca 3.5 air mi WNW of Poker Jim Butte, ca 19 air mi SSW of Ashland.-106.430445.341711821207Hardwood draw dominated by Crataegus and Prunus. Phenology: flowering & fruiting.RMRM832032 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10447Brian Elliott Elizabeth Mark199985217U.S.A.ColoradoFremontWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: ca 2 air mi up Box Canyon, ca 5 air mi SE of Salida on south side of U.S. Hwy 50.-105.925538.47422134Riparian, Pinus edulis. Phenology: flowering & fruiting.RMRM649630 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6744Amy J. Roderick1998718199U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Alcova Reservoir: Fremont Canyon at end of Lake Shore Drive, ca 4 air mi SW of Alcova townsite.-106.786742.51121689Rocky canyon opening into reservoir. Phenology: flowering.RMRM830184 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10729Brian Elliott Elizabeth mark199989221U.S.A.ColoradoLas Animas[location and coordinates withheld]2210Pinus ponderosa, riparian. Phenology: flowering & fruiting.RMRM832031 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10773Brian Elliott Elizabeth Mark199989221U.S.A.ColoradoLas AnimasWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Bosque de Oso Wildlfe Area, mine reclamation site, ca 0.5 mi S of Zamora.-105.916737.14442195Mixed grasses and forbs; highly disturbed. Phenology: flowering & fruiting.RMRM830186 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10828Brian Elliott Elizabeth Mark1999810222U.S.A.ColoradoLas Animas[location and coordinates withheld]3048Meadow, mixed grass and forb. Phenology: flowering.RMRM649705 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6786Amy J. Roderick1998719200U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Shirley Basin: Dome Rock Reservoir E of County Road 291, ca 4.5 air mi N of Leo.-106.773442.31082036Cottonwoods, willows, and graminoids on reservoir banks. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4403Michael K. Kirkpatrick2010812224U.S.A.ColoradoEagleSawatch Range: White River National Forest: Homestake Road, ca 13 air mi S of Dowds Junction and 6 mi W of U.S. Hwy 24.-106.426739.41712792Ponds and wet meadows. Phenology: flowering.RMRM604380 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6812Neil Hotchkiss1942725206U.S.A.North DakotaWardDes Lacs National Wildlife Refuge: between units 4A and 5, 1.5 mi SE of Kenmare.Dike. Phenology: flowering.RMRM54345 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2369W. S. Baird190481214U.S.A.North DakotaCavalier.Phenology: flowering.RMRM159134 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.s.n.J. Lunell1909816228U.S.A.North DakotaBensonLeeds.In fields. Phenology: flowering.RMRM522500 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.14714Marshal R. Crosby1983811223U.S.A.North DakotaGrand ForksUniversity of North Dakota Prairie reserve, ca 3 km E of Emerado-97.447.55Phenology: flowering & fruiting.RMRM394003 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9636Gary E. Larson1983729210U.S.A.South DakotaFaulkBuss Waterfowl Production Area.Alkaline wet meadow zone. Phenology: fruiting.RMRM394031 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9611aGary E. Larson1983728209U.S.A.South DakotaSpinkCottonwood Lake.Among cattails, marshy area. Common. Phenology: flowering.RMRM394024 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9485Gary E. Larson1983726207U.S.A.South DakotaKingsburyLake Henry.Interspersed among cattails in drawdown zone of shallow marsh. Common. Phenology: flowering.RMRM394291 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9231Gary E. Larson1983715196U.S.A.South DakotaMarshallBuffalo Lake: Public Access Area on west side of lake.Sandy gravelly lake shore. Common. Phenology: flowering.RMRM394275 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9169Gary E. Larson1983714195U.S.A.South DakotaDayWaubay National Wildlife Refuge: diked northeast portion of Spring Lake.Wet meadow zone. Common. Phenology: flowering & fruiting.RMRM394424 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9054Gary E. Larson198376187U.S.A.South DakotaHamlinLake Marsh.Disturbed edge of marsh. Common. Phenology: flowering.RMRM830183 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11144Brian Elliott1999819231U.S.A.ColoradoCostilla[location and coordinates withheld]3475Picea engelmannii, Abies lasiocarpa with scattered old clearcuts. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.80663B. E. Nelson2010729210U.S.A.MontanaPhillipsLarb Hills (South): at the head of Telegraph Creek, ca 47 air mi S of Saco; ca 44 air mi SSE of Malta.-107.492847.7983884945Boxelder-chokecherry-buffaloberry-Rocky Mountain juniper-cottonwood thickets in the valley bottom and ravenes. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.80702B. E. Nelson2010729210U.S.A.MontanaPhillipsLarb Hills (South): near the head of South Fork Shotgun Coulee ca 1 air mi N of Coal Mine Hill, ca 44-45 air mi S of Saco; ca 40 air mi SSE of Malta.-107.532747.8508914969Toxicodendron-Rhus-Acer-Symphoricarpos thickets in the bottoms. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.80926B. E. Nelson201081213U.S.A.MontanaPhillipsWhitewater Lake Wildlife Management Area: at Whitewater Reservoir off of Border Road, ca 5.5 air mi N of Whitewater; ca 36 air mi NNE of Malta.-107.631748.8416731734Dry bed of former reservoir covered with Hordeum and Kochia. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.81064B. E. Nelson2010910253U.S.A.MontanaPhillipsLittle Rocky Mountains: ridge between Mission Creek and Damon Hill above King Creek, ca 5.5 air mi SE of Hays; ca 46.5 air mi SW of Malta.-108.615347.927314631487Disturbed areas and roadside. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.81498B. E. Nelson2010921264U.S.A.MontanaPhillipsLittle Rocky Mountains: Camp Creek upstream of Camp Creek Campground, ca 1 air mi NE of Zortman; ca 43 air mi SW of Malta.-108.506247.92811243Stream bottom with aspen forest and chokecherry-hawthorn-willow understory. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1476Joseph L. M. Charboneau2010711192U.S.A.MontanaPhillipsUpper Missouri River Breaks National Monument: on Antelope Ridge and in East Fork Hideaway Coulee, ca 4 air mi NNE of Grand Island, ca 17 air mi SW of Zortman; ca 61 air mi SW of Malta.-108.786947.7589853932Clay coulee bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1695Joseph L. M. Charboneau2010715196U.S.A.MontanaPhillipsE of North Dodson Road, ca 11 air mi SW of Hubert Hill, ca 23.5 air mi NW of Malta.-108.253448.5766862868Roadside slopes. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1865Joseph L. M. Charboneau2010718199U.S.A.MontanaPhillipsAlong Midale Road/Refuge Road 212, ca 3 air mi SSE of Karsten Coulee Reservoir, ca 31.5 air mi SE of Zortman; ca 51.5 air mi SSW of Malta.-108.011347.6326768780Moist areas above and below reservior and dam. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2238Joseph L. M. Charboneau B. E. Nelson2010725206U.S.A.MontanaPhillipsUpper Missouri River Breaks National Monument: along Bull Creek and badlands to the W, ca 0.5 mi below the confluence with Winter Creek, ca 16 air mi SW of Hays; ca 62 air mi SW of Malta.-108.879647.7953768878Clay flats at the canyon bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2444Joseph L. M. Charboneau2010729210U.S.A.MontanaValleyMont Hwy 24 at bridge over Dry Fork Creek, ca 8.5 air mi SE of Forsman Reservoir, ca 23.5 air mi NNE of Glasgow.-106.562248.5247832835Moist bottoms along stream/roadside with clay soil. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2720Joseph L. M. Charboneau201081213U.S.A.MontanaValleyConehead Reservoir on South Creek, N of Thoeny Road, ca 3.5 air mi NE of Last Chance Reservoir, ca 15 air mi WNW of Opheim.-106.711448.9053798801On clay soil slightly higher than creek bed. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2780Joseph L. M. Charboneau201083215U.S.A.MontanaValleyBurnt Lodge Wilderness Study Area: Larb Hills (South): Plum Coulee on Plum Creek Trail, ca 3 air mi SSE of Castle Butte, ca 46 air mi SW of Glasgow.-107.378347.7863765878Draw bottoms. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2875Joseph L. M. Charboneau201083215U.S.A.MontanaValleyTroika Reservoir, S of Willow Creek Road, ca 2 air mi SE of Wagner Spring, ca 36.5 air mi SW of Glasgow.-107.123847.812768783Drying mud in coulee bottom. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2886Joseph L. M. Charboneau201085217U.S.A.MontanaPhillipsN of Old U.S. Hwy 2 and Bowdoin National Wildlife Refuge, along South Canal, ca 1/4 air mi N of Lake Bowdoin, ca 10.5 air mi ENE of Malta.-107.674548.4309682685Moist ditch bottoms. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2978Joseph L. M. Charboneau201088220U.S.A.MontanaPhillipsW of Rocky Point Road, ca 4 air mi S of Point of Rocks Reservoir, ca 6.5 air mi SSE of Dodson; ca 8 air mi WSW of Malta.-108.211948.3064768771Moist clay soil surrounding reservoir. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3009Joseph L. M. Charboneau201088220U.S.A.MontanaPhillipsShore of Ester Lake, N of Hog Farm Road, ca 3.5 air mi SW of Wild Horse Reservoir, ca 26 air mi SW of Malta.-108.254548.0962807810Moist areas of loamy to clay soil around lake. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3123Joseph L. M. Charboneau2010810222U.S.A.MontanaValleyN of Kerr Road, Wards Reservoir, ca 6.5 air mi NE of Forsman Reservoir, ca 17 air mi SW of Opheim.-106.622348.6651893896Moist clay soil surrounding reservoir. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3490Joseph L. M. Charboneau2010821233U.S.A.MontanaPhillipsLittle Rocky Mountains: Beaver Creek, ca 1.5 air mi ENE of the intersection of the road from Camp Creek and the Beaver Creek Trail, ca 2 air mi E of Beaver Mountain, ca 3 air mi NNE of Zortman; ca 41 air mi SW of Malta.-108.491547.95812401320Creek bottom with sandy soil and stones and surrounding area. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3577Joseph L. M. Charboneau2010821233U.S.A.MontanaPhillipsLittle Rocky Mountains: along road between Camp Creek and Beaver Creek, ca 0.5 air mi N of top of Old Scraggy Peak, ca 2 air mi N of Zortman; ca 41.5 air mi SW of Malta.-108.525147.944114571490Roadside. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3659Joseph L. M. Charboneau2010822234U.S.A.MontanaPhillipsLittle Rocky Mountains: White Horse Canyon, ca 1 air mi N of Beaver Mountain, ca 4 air mi N of Zortman; ca 41 air mi SW of Malta.-108.529847.978811951231Stony riparian area on creek bottom. Phenology: flowering.RMRM831997 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8386Brian Elliott Elizabeth Mark199976187U.S.A.ColoradoHuerfano[location and coordinates withheld]1829Aquatic and pondside. Phenology: flowering & fruiting.RMRM831996 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8522Brian Elliott Elizabeth Mark199979190U.S.A.ColoradoCusterWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountains: San Isabel National Forest: north side of Colo Hwy 96, ca 1 mi E of McKenzie Junction (jct of Colo hwys 165 and 96).-105.163838.1812439Pinus ponderosa-Pseudotsuga menziesii woodland. Phenology: flowering.RMRM831995 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8671aBrian Elliott Elizabeth Mark199979190U.S.A.ColoradoPuebloWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: on Colo Hwy 96 at the junction of Siloam Road, ca 6 air mi E of Wetmore.-104.980838.2541661Irrigation ditch and roadside. Phenology: flowering & fruiting.RMRM831994 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8811bBrian Elliott Elizabeth Mark and Kenneth Elliott1999716197U.S.A.ColoradoCusterWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Wet Mountain Valley: ca 7 air mi S of Silver Cliff on County Road 119.-105.438338.03512451Roadside ditch and irrigated pasture. Phenology: flowering.RMRM831993 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8858aBrian Elliott Elizabeth Mark1999710191U.S.A.ColoradoCostilla[location and coordinates withheld]2423Below dam in ditch. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7293Joseph L. M. Charboneau2011711192U.S.A.MontanaPhillipsKorsbeck Waterfowl Production Area: W of Stage Road, ca 8 air mi N of Ester Lake, ca 24 air mi NNE of Zortman; ca 21.5 air mi SW of Malta.-108.270648.2154789792Pond-edge wetlands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7846Joseph L. M. Charboneau Damien Austin2011719200U.S.A.MontanaPhillipsAmerican Prairie Reserve: Parrot Coulee at confluence with Beaver Creek, ca 1.5 air mi SW of Veseth Reservoir, ca 16 air mi E of Zortman; ca 36 air mi SSW of Malta.-108.200447.8969829835Riparian area around creek bottom surrounded by hay field. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8122Joseph L. M. Charboneau2011721202U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: Bell Ridge, E of CMR Auto Tour Route (Refuge Road 101), ca 2.5 air mi N of the Missouri River, ca 19 air mi S of Zortman; ca 60 air mi SW of Malta.-108.568347.6433832868North-facing slopes with ponderosa pine and Douglas-fir on shale to clay. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8375Joseph L. M. Charboneau2011730211U.S.A.MontanaBlaineBlack Coulee National Wildlife Refuge: Black Coulee, ca 10.5 air mi S of Turner, ca 21 air mi NE of Harlem; ca 34.5 air mi NW of Malta.-108.408948.6947887905Coulee bottom. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8433Joseph L. M. Charboneau2011731212U.S.A.MontanaPhillipsBowdoin National Wildlife Refuge: along Refuge Tour Road, near Black Coulee Pond, ca 6 air mi NW of Le Noir Reservoir, ca 3.5 air mi E of the Milk River, ca 7 air mi ENE of Malta.-107.735248.3844682689Wetlands interspersed with groves of cottonwood and Russian olive and chokecherry-willow thickets. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8646Joseph L. M. Charboneau201182214U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: Cut Throat Coulee at terminus of Refuge Road 325, ca 4.5 air mi N of Bonetrail Boat Ramp, ca 44 air mi WSW of Fort Peck; ca 43 air mi SW of Glasgow.-107.254247.7396829890Moist areas surrounding reservoir. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8758Joseph L. M. Charboneau201184216U.S.A.MontanaValleyGlasgow Base Ponds, W of Mont Hwy 24, ca 4.5 air mi W of Porcupine Creek, ca 3.5 air mi NW of St. Marie; ca 18 air mi N of Glasgow.-106.579148.4481829835Moist grasslands surrounding pond with willows, Russian olive, and snowberry thickets. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8879Joseph L. M. Charboneau201184216U.S.A.MontanaValleyHell Creek, ca 4 air mi SSE of Johnnys Hill, ca 20 air mi SW of Opheim; ca 44 air mi NE of Glasgow.-106.064748.6826862868Riparian coulee bottom. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9188Joseph L. M. Charboneau201186218U.S.A.MontanaPhillipsLittle Rocky Mountains: Antoine Butte, ca 2.5 air mi WSW of Old Scraggy Peak, ca 3 air mi NW of Zortman; ca 45 air mi SW of Malta.-108.577847.93217221743Bottom of dry runoff-containment pond. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9195Joseph L. M. Charboneau201189221U.S.A.MontanaPhillipsMilk River Dodson Dam Unit Wildlife Management Area: ca 3.5 air mi NW of Dodson; ca 21 air mi WNW of Malta.-108.308648.4152701707Wetlands and thickets. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9399Joseph L. M. Charboneau2011811223U.S.A.MontanaPhillipsBowdoin National Wildlife Refuge: along Refuge Tour Road, near Teal Pond Complex, ca 5 air mi W of Beaver Creek, ca 15 air mi WSW of Saco; ca 11 air mi ENE of Malta.-107.650948.406676679Russian olive thicket. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9478Joseph L. M. Charboneau2011813225U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: Manning Bottoms along Rock Creek, ca 10 air mi E of Fred Robinson Bridge, ca 21.5 air mi S of Zortman; ca 60 air mi SW of Malta.-108.473247.6128695701Floodplain with some groves of willows and cottonwoods on silty soil. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9558Joseph L. M. Charboneau2011813225U.S.A.MontanaPhillipsUnnamed reservoir S of the intersection of Emond and First Creek Hall Roads, ca 10.5 air mi NW of Indian Lake, ca 26 air mi ESE of Zortman; ca 35 air mi S of Malta.-107.984247.8684817823On rip-rap of dam. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9578Joseph L. M. Charboneau2011813225U.S.A.MontanaPhillipsAmerican Prairie Reserve: Telegraph Creek, ca 4.5 air mi NE of Indian Lake, ca 38 air mi ESE of Zortman; ca 41.5 air mi S of Malta.-107.769447.7749716719Riparian cottonwood grove with snowberry understory. Phenology: flowering & fruiting.RMUSFS898332 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.83569B. E. Nelson2011815227U.S.A.ColoradoGrandBlue River Valley: between the river and the north end of Lawson Ridge E of Colo Hwy 9, ca 4 air mi S of Kremmling.-106.370840.006122742292Clay slopes and bottom of gully in sagebrush. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.83889B. E. Nelson2011822234U.S.A.ColoradoSummitWilliams Fork Mountains: Arapaho National Forest: lower end of Miller Gulch above Green Mountain Reservoir and Colo Hwy 9, ca 18 air mi NNW of Silverthorne at I-70.-106.235139.853924232500Canyon bottom with scattered Douglas fir. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7522Michael K. Kirkpatrick B. E. Nelson2011714195U.S.A.ColoradoEagleSawatch Range: White River National Forest: Grouse Creek Trail, ca 0.5 air mi N of Minturn.-106.437239.59242408Montane meadow with scattered sagebrush and lodgepole pine, and riparian corridor with willow and alder. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6925B. E. Nelson1980810223U.S.A.MontanaCarbonPryor Mountains: Custer National Forest: on Big Pryor Mountain, ca 26 air mi SE of Bridger.-108.440745.10523782439Disturbed area around an old shack. Phenology: flowering.RMRM909230 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7414Hans Hallman2010810222U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: in the vicinity of Mud Turtle Reservoir, N of Forest Road 4432, ca 3 air mi NW of Diamond Butte, ca 25.5 air mi SE of Ashland.-105.966845.284911951219Steppe dominated by Artemisia, Psoralidium, and grasses. Phenology: fruiting.RMRM649706 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7233Amy J. Roderick1998724205U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Rattlesnake Hills: northwest end of range S of Dry Creek Road, ca 17.8 air mi SW of Waltman.-107.434142.8732103Wet meadow of graminoids and forbs. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1587Hans Hallman200974185U.S.A.MontanaPowder RiverCuster National Forest: Ashland Ranger District: along Beaver Creek Road or Forest Road 4133 at and around Road Creek Reservoir, ca 2 air mi NW of Holiday Campground and ca 14.5 air mi ENE of Ashland.-105.997745.653210971109In and around drainage and reservoir, dominated by sedges and grasses. Phenology: flowering.RMRM649707 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7290Amy J. Roderick1998727208U.S.A.WyomingAlbanyUpper North Platte and Laramie River Drainages: Laramie Plains: Wheatland Reservoir No. 3 along Garrett Road, ca 16.4 air mi NE of Rock River.-105.731941.8932103Sagebrush, rabbitbrush, and mixed grasses around reservoir. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.9680Lori E. Brummer201279191U.S.A.ColoradoOurayUncompahgre Basin: Pleasant Valley, County Road 24, just N of Colo Hwy 62, ca 5 1/4 air mi WSW of Ridgway.-107.850638.13223272373Along roadside through irrigated meadow and along irrigation ditch. Phenology: flowering.RMRM831991 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.65927Ronald L. Hartman199984216U.S.A.ColoradoSaguacheWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Cochetopa Hills: Colo Hwy 114, 1 road mi NW of Buffalo Pass Campground.-106.536538.200429873048Igneous outcrop and ponderosa pine forest. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11509Lori E. Brummer2012829242U.S.A.ColoradoOuraySan Juan Mountains: Uncompahgre National Forest: Ironton Park; pond in iron fen just N of Full Moon Gulch, ca 4.5 air mi SSW of Ouray.-107.6707337.949632949Iron fen. Phenology: flowering.RMRM831990 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.66599Ronald L. Hartman1999823235U.S.A.ColoradoFremontWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: Spring Gulch.-105.925538.474224392682Streamside and slope. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4538Joshua J. Irwin2010625176U.S.A.IdahoLemhiSalmon National Forest: Salmon River Mountains: Colson Creek near first switchback on Colson Creek Road, 12.7 air mi W of Shoup.-114.5363945.350891468Well developed soil in mesic forb dominated vegetation; 30° slope, WSW aspect; granite geology. 26-75 individuals apparent. Phenology: fruiting.RMRM649708 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7440Amy J. Roderick1998729210U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Pedro Mountains: Pyramid Mountain, ca 6.3 air mi W of County Road 291; ca 7.3 air mi NW of Leo.-106.870742.339724692530Granite outcrops and slope of lodgepole pine; recent burn. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4341Joshua J. Irwin2010816228U.S.A.IdahoCusterChallis National Forest: Pioneer Mountains: valley slopes on the north side of Left Fork Iron Bog Creek, along trail, 20.6 air mi SSW of Mackay.-113.823843.659392519Sandy or gravelly soil in mesic herbaceous riparian vegetation; 35° slope, ESE aspect; siliciclastic sedimentary geology. 1-25 individuals apparent. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4170Joshua J. Irwin2010815227U.S.A.IdahoCusterChallis National Forest: Pioneer Mountains: "Iron Bog", 20.1 air mi SSW of Mackay.-113.7565743.643362144Well developed soil in xeric woody riparian vegetation; 6° slope, SE aspect; siliciclastic sedimentary geology. 26-75 individuals apparent. Phenology: fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6622Joshua J. Irwin2011721202U.S.AIdahoCusterThousand Springs Valley: Thousand Springs recreation site just S of Whiskey Springs, 16.3 air mi SW of Mackay.-113.8416444.08378191625-75 plants estimated in xeric coarse textured soil within roadside vegetation, no slope, alluvial geology. 25-75 plants estimated. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6628Joshua J. Irwin2011722203U.S.AIdahoButteLittle Lost River Valley: irrigation ditch at the base of the East Canyon alluvial fan, 22.1 air mi NE of Arco.-112.9664343.845461488Dominant population in xeric soil within roadside vegetation, no slope, alluvial geology. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7910Joshua J. Irwin2011814226U.S.AIdahoCusterNorth end of Lost River Range: along U.S. Hwy 93, vicinity of pump station just N of Eagle Rock, 13.1 air mi NNE of Challis.-114.0763144.6611437>150 plants estimated in mesic soil within herbaceous riparian vegetation, no slope, trachyandesite geology. Phenology: flowering.RMRM653236 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1581C. H. Refsdal199476187U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: Seedskadee National Wildlife Refuge: ca 30 air mi NW of Green River; ca 2.3 road mi S of Headquarters along irrigation ditch.-109.827741.90411899Irrigation ditch for wetland ponds. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.90833Ronald L. Hartman201081213U.S.A.IdahoLemhiSalmon National Forest: Salmon River Mountains: Forest Road 055 at junction with Forest Road 076 to Leesburg; Panther Creek and Napias Creek area.-114.217145.13791485Roadside and seasonally wet fields; also adjacent to stream. Phenology: flowering.RMRM914567 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10730Robert D. Dorn2013727208U.S.A.WyomingGoshenCa 4 mi NE of Lingle, along Rawhide Creek.-104.28333342.1733331310Stream bank, with Glycyrrhiza and Elaeagnus. Flowers purple. Phenology: flowering.RMRM914515 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10851Robert D. Dorn2013814226U.S.A.WyomingGoshenNorth Platte River at Nebraska, south bank.-104.05333341.9883331250River bank, with Oenothera villosa and Potentilla paradoxa. Flowers lavender. Phenology: flowering.RMRM915082 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.91795Ronald L. Hartman201187219U.S.A.New MexicoColfaxEagle Nest Lake at rest stop at north-northeast corner of lake after switchback on U.S. Hwy 64, W of the dam, ca 1 air mi SE of Eagle Nest.-105.250136.545424872498Receding shoreline (down 30-40 ft). Phenology: flowering & fruiting.RMRM653235 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1780C. H. Refsdal Duane Atwood1994720201U.S.A.WyomingUinta[location and coordinates withheld]23232332Moist irrigation ditches; grasses and aspens. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.92080Ronald L. Hartman2011816228U.S.A.IdahoCusterChallis National Forest: Southern Salmon River Mountains: ca 3 road mi N of Ida Hwy 75 on Squaw Creek Road, along road for ca 100 m, ca 19.5 air mi SW of Challis.-114.4669544.2799331736Talus slopes and roadside.RMRM649709 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7514Amy J. Roderick199881213U.S.A.WyomingCarbon[location and coordinates withheld]2073Holding pond and creek at edge of sagebrush and rabbitbrush; graminoids dominant. Phenology: flowering & fruiting.RMRM653233 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2056C. H. Refsdal1994725206U.S.A.WyomingSweetwater[location and coordinates withheld]2262Roadside, flats, and farmlands; gravelly clay soils. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7519Emma E. Freeland2013731212U.S.A.MontanaMadisonTobacco Root Mountains: North Willow Creek, ca 2 air mi SW of Pony, ca 4.5 air mi NE of Hollowtop Mountain.-111.922745.63931850Thicket of Salix and Cornus along a creek. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7545Emma E. Freeland2013731212U.S.A.MontanaMadisonTobacco Root Mountains: North Willow Creek, ca 2 air mi SW of Pony, ca 4.5 air mi NE of Hollowtop Mountain.-111.915145.6361993Along a seep at ecotone between grasslands and open Pseudotsuga menziesii forest. Phenology: flowering.RMRM653232 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2145C. H. Refsdal1994727208U.S.A.WyomingSweetwater[location and coordinates withheld]1873Shoreline and uplands of river; alternating sand and clay sediments. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7667Emma E. Freeland201381213U.S.A.MontanaMadisonMadison Valley: Eight Mile Ford Fishing Access site, ca 4 air mi S of Ennis, along County Road 36.-111.755745.29891536Moist to wet meadow along a river and next to a boat access gravel road. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8007Emma E. Freeland2013810222U.S.A.MontanaMadisonMadison Valley: BLM Palisades Recreation Area, ca 26 air mi S of Ennis, ca 12 air mi NE of Black Butte.-111.656944.987217221731Dry, disturbed grasslands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8008Emma E. Freeland2013810222U.S.A.MontanaMadisonMadison Valley: BLM Palisades Recreation Area, ca 26 air mi S of Ennis, ca 12 air mi NE of Black Butte.-111.656944.987217221731Dry, disturbed grasslands. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8093Emma E. Freeland2013810222U.S.A.MontanaMadisonHorn Mountains: Cliff Lake, the inlet at Horn Creek, NE of Antelope Prong, ca 5 air mi SW of junction of Mont Hwy 87 and U.S. Hwy 287.-111.537144.7631939Boat launch parking lot. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2355C. H. Refsdal Duane Atwood and Lucy Jordan199482214U.S.A.UtahDaggettSouthwestern Wyoming and Adjacent Utah: Grasshopper Island in the Green River, ca 11 air mi E of Dutch John.-109.290240.90881664Shoreline. Phenology: flowering & fruiting.RMRM914699 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.27002Walter Fertig2011823235U.S.A.WyomingLincolnOverthrust Belt: drainage below east-west oriented ridge system on south side of South Fork Twin Creek, ca 1.5 mi N of Bear River Divide, 7.5 mi S of Fossil, and 10 air mi SW of Kemmerer.2147Rocky north-facing wash of Green River Shale draining adjacent semi-barren knobs; gray clay soil with 10% rock cover; with Machaeranthera canescens, Eriogonum umbellatum, Linum lewisii, and Castilleja flava. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2458C. H. Refsdal Duane Atwood and Lucy Jordan199483215U.S.A.UtahUintahSouthwestern Wyoming and Adjacent Utah: ca 17 air mi SE of Dutch John; 4.9 mi W of Colorado on both sides of Crouse Creek Road.-109.09940.807318751890Steep creek side, Acer. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2498C. H. Refsdal Duane Atwood and Lucy Jordan199483215U.S.A.UtahUintahSouthwestern Wyoming and Adjacent Utah: Browns Park: ca 1.2 air mi W of Swinging Bridge, north side of the Green River.-109.060840.83631646Riparian shoreline. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1037Lori E. Brummer201074185U.S.A.ColoradoMontroseFruitland Mesa: Green Mountain, ca 14 road mi W of Black Canyon Road, ca 18.5 air mi ESE of Delta.-107.777338.643323292518Dry stock pond. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1222Lori E. Brummer2010728209U.S.A.ColoradoOurayUncompahgre National Forest: area between Cow Creek and Green Mountain trailheads, where County Road 12 ends at Cow Creek, ca 32 air mi SSW of Montrose.-107.6090538.09412530Roadside in mixed coniferous forest. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1969Lori E. Brummer2010813225U.S.A.ColoradoMontroseUncompaghre Plateau: 25 Mesa: Monitor Creek, ca 20.5 air mi SW of Delta.-108.317538.530521342256Roadside in pinyon/juniper on sandstone mesa. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2165Lori E. Brummer2010817229U.S.A.ColoradoGunnisonGunnison National Forest: S of McClure Pass, Raggeds Trail 820, ca 23 air mi NW of Paonia.-107.320139.067625602926Opening in mixed aspen/spruce/fir forest. Phenology: flowering.RMRM653228 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2715C. H. Refsdal199489221U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: Seedskadee National Wildlife Refuge: ca 27 air mi NW of Green River; 1.3 mi NE of Refuge Headquarters on river access road.-109.862741.91441920Clay streambanks, sometimes river rock, with Carex and Salix. Phenology: flowering & fruiting.RMRM653227 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2744C. H. Refsdal1994811223U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: 3/4 mi E of Green River on FMC road along the Green River by the bridge.-109.433941.49471849River bottom, river rock, willows, grasses. Phenology: flowering & fruiting.RMRM653226 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2847C. H. Refsdal1994815227U.S.A.WyomingUinta[location and coordinates withheld]1981Wetland, willows. Phenology: flowering & fruiting.RMRM649710 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7610Amy J. Roderick199882214U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Hanna Basin: Medicine Bow River at County Road 291, ca 10.1 air mi N of Hanna.-106.507942.00941951Sagebrush-greasewood in disturbed area. Phenology: flowering.RMRM653225 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2866C. H. Refsdal1994815227U.S.A.WyomingUinta[location and coordinates withheld]22102225Meandering stream, river channel rock, grasses, sedges. Phenology: flowering & fruiting.RMRM653224 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2901C. H. Refsdal199493246U.S.A.WyomingSweetwater[location and coordinates withheld]1905Upland sandy soils, clay river banks. Phenology: flowering & fruiting.RMRM653223 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2959C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]2070River bottom and wetland, cottonwoods, willows. Phenology: flowering & fruiting.RMRM653222 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2984C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]20392042Meadow, pasture. Phenology: flowering & fruiting.RMRM653221 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3027C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]2121Willow thickets along the creek. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6951Lori E. Brummer2011814226U.S.A.ColoradoMontroseUncompahgre Plateau: small canyon between Spring Creek and Dave Wood Road, ca 2/3 road mi SW of Dave Wood Road on BLM road, ca 9.5 air mi SW of Montrose.-107.964238.355622132237Along intermittent stream in shallow sandstone canyon. Phenology: fruiting.RMRM649711 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7634Amy J. Roderick Kevin J. Taylor199886218U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Ferris Mountains: Miners Canyon on northeastern side of range, ca 16 air mi N of Independence Rock.-107.123842.267419512012Along creek; chokecherry, hawthorn, willow, boxelder, and sagebrush common. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3093C. H. Refsdal199494247U.S.A.UtahDaggettNorth Slope Uinta Mountains: Flaming Gorge National Recreation Area: Sheep Creek, ca 4 air mi S of Manila; junction of Forest Road 218 and Utah Hwy 44 on west side of Forest Road.-109.729940.92331902Upland, sagebrush, and scattered junipers. Phenology: flowering & fruiting.RMRM921436 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.11430Robert D. Dorn2014717198U.S.A.WyomingConverseCa 1.5 mi NE of Esterbrook.-105.33833342.4251981Meadow, with Erigeron and Agoseris. Flowers purple. Phenology: flowering.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2000Georgia G. Thomas201388220U.S.A.IdahoIdahoNez Perce National Forest: Selway River Drainage: Forest Road 286 to Kooskia, ca 20 air mi ESE of Kooskia.-115.660346.1111346Exposed hillside, logged area. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5250Georgia G. Thomas2014820232U.S.A.IdahoIdahoNez Perce National Forest: Selway River Drainage: Limber Luke, Forest Road 464, ca 13.5 air mi ENE of Kooskia.-115.708246.18971048Mixed coniferous forest. Phenology: fruiting.RMRM963835 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.1639Cheryl Mayer Andrew Lyons-Gould201671183U.S.A.WyomingCrookDevils Tower National Monument, sloping "Meadows" area below summit on southeast side of Devils Tower.1524Central part of Meadows, on lower edge; in shaded area under boulder. Uncommon. Phenology: vegetative only.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2223Crista L. O'Conner2016711193U.S.A.IdahoClearwaterClearwater Mountains: confluence of North Fork Clearwater River and Kelly Creek, nearby Kelly Forks Work Center, ca 30 air mi NE of Pierce.-115.26846.7222841853Roadside and other disturbed areas, including gravel pit. Phenology: flowering & fruiting.RMRM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2432Crista L. O'Conner Emily Poor2016716198U.S.A.IdahoLatahM. M. McCrosky Memorial State Park: unnamed spur road of Forest Road 4716, ca 8 1/4 air mi N of Potlatch and ca 3.5 air mi SE of Mission Mountain.-116.892247.0453945975Early-seral community with evident history of intensive timber harvest and management; dominated by Pinus ponderosa and Pseudotsuga menziesii in overstory with common Abies grandis regeneration beneath. Phenology: flowering.RMRM981725 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4799Bonnie Heidel201885217U.S.A.WyomingAlbanyWest slope Laramie Range: ca 1.5 mi NE of U.S. Hwy 30, ca 3.7 air mi E of downtown Laramie.-105.523941.31582277Berms above shallow excavated wetlands, dry soil; with Bromus inermis. Phenology: flowering.RMRM523791 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.10960Keith H. Dueholm1980825238U.S.A.WyomingSweetwaterRock Springs Uplift: ca 12 air mi NE of Minnies Gap.2317Seepage areas along small stream, sagebrush slopes, thickets of aspen and serviceberry; along creek. Phenology: fruiting.RMRM184573 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.s.n.County Agent1940U.S.A.WyomingPlatteFrom near Wheatland.Phenology: flowering.RMRM651332 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.42987B. E. Nelson1997819231U.S.A.WyomingNatronaLaramie Range: along Smith Creek below Otter Creek at the east end of Muddy Mountain on Smith Creek or County Road 607, ca 16 air mi SE of Casper.-106.157642.656918841981open slopes with scattered large limestone boulders and sagebrush and scattered mountain shrub. Phenology: fruiting.RMRM649712 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8070Amy J. Roderick1998812224U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Seminoe Mountains: Morgan and Marking Pen creeks on County Road 351, ca 2 air mi W of Seminoe Dam.-106.948642.16632073Along creek; thickets of Salix, Betula, Prunus, Acer, and Cornus. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6357C. H. Refsdal Barbara McNight199581213U.S.A.UtahDaggettSouthwestern Wyoming and Adjacent Utah: Browns Park: Green River, ca 13 air mi ESE of Dutch John; 1.8 mi S of junction of Jarvie Ranch/Browns Park roads on west side Browns Park Road.-109.137340.879816461670River's edge, river rock, clay soils. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6422C. H. Refsdal Barbara McNight199581213U.S.A.UtahDaggettSouthwestern Wyoming and Adjacent Utah: Browns Park: Swallow Canyon, ca 16 air mi SE of Dutch John.-109.079940.850816461682River's edge, sandy soils, Salix, Tamarix. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6487C. H. Refsdal Barbara McNight199581213U.S.A.UtahDaggettSouthwestern Wyoming and Adjacent Utah: Browns Park: Green River, ca 12.2 air mi ESE of Dutch John.-109.137340.86531646River's edge, mostly sandy, Salix, Carex. Phenology: flowering & fruiting.RMRM634237 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.6961C. H. Refsdal1995815227U.S.A.WyomingUinta[location and coordinates withheld]20362054Salt desert shrubs, sandy soils, calcium carbonate deposits from a mineral spring. Phenology: flowering & fruiting.RMRM634236 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7704C. H. Refsdal199591244U.S.A.WyomingLincolnBasins and Mountains of Southwest Wyoming: ca 6.8 air mi W of Kemmerer; 2.1 mi S on County Road 328.-110.702241.782220972170Rolling sagebrush hills, clay soils. Phenology: flowering & fruiting.RMRM634235 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.7781C. H. Refsdal199591244U.S.A.WyomingUinta[location and coordinates withheld]2048Creekside, Salix. Phenology: flowering & fruiting.RMRM649713 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8214Amy J. Roderick1998815227U.S.A.WyomingNatrona[location and coordinates withheld]20302073Along creek; birch, chokecherry, willow, limber pine, and snowberry common. Phenology: flowering & fruiting.RMRM649714 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8346Amy J. Roderick1998817229U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Como Lake S of U.S. Hwy 30-287, ca 9 air mi W of Medicine Bow townsite.-106.372141.90762042Greasewood flats; alkaline. Phenology: flowering.RMRM649715 Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.8366Amy J. Roderick1998817229U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Hanna Basin: Sand Ridge N of U.S. Hwy 30-287, ca 4.4 air mi NW of Hanna.-106.643741.90762164Cattail draw. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.2715Timothy W. Chumley199584216U.S.A.ColoradoJeffersonEast-central Colorado: Mosquito Range to Plains: Lost Creek Wilderness: along Wigwam Creek and adjacent slopes, loosely following the Wigwam or Forest Trail 609, ca 7 air mi W of Deckers.-105.380739.265624752804Along roadside. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.3444Timothy W. Chumley1996531152U.S.A.ColoradoEl Paso[location and coordinates withheld]1859Waste ground along roadside and railroad tracks. Phenology: buds.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4570Timothy W. Chumley1996714196U.S.A.ColoradoFremontEast-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: East Gulch: along East Gulch and surrounding slopes and ridges, at end of County Road 27, ca 5.2 air mi N of town of Texas Creek. C1/2-105.578538.468921952560In moist flats along the stream with gravelly-sandy soils. Phenology: buds.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4610Timothy W. Chumley1996714196U.S.A.ColoradoFremontEast-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: along the N bank of the Arkansas River and adjacent uplands off County Road 45, ca 2 air mi NW of Howard.-105.853138.474220792310Along the banks of the river and adjacent roadside. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4869Timothy W. Chumley1996721203U.S.A.ColoradoDouglasEast-central Colorado: Mosquito Range to Plains: Rampart Range: slopes and ridges ca 1 mi E of Noddleheads, off Colo Hwy 67 near trailhead for Forest Trail Road 677, ca 7.2 air mi NE of Deckers.-105.138539.323522682390In a moist drainage in open Douglas fir forest. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.4993Timothy W. Chumley1996722204U.S.A.ColoradoFremontEast-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Beaver Creek State Wildlife Area: along Beaver Creek and adjacent meadows, ridges and gulches off County Road 132 at terminus, ca 15 air mi NE of Canon City.-105.003538.570818531914On the sandy-gravelly banks of the creek. Phenology: flowering & fruiting.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5266Timothy W. Chumley Irene Thien1996728210U.S.A.ColoradoParkEast-central Colorado: Mosquito Range to Plains: Arkansas River Drainage: Cals Fork Gulch: off Forest Road 187 or County Road 187 W along stream at head of gulch, ca 12 air mi SE of Buena Vista.-105.930438.761728782914Along the muddy shores of a beaver pond. Phenology: flowering.RM Cirsium arvensephysical specimenAsteraceaeCirsiumarvense(L.) Scop.5301Timothy W. Chumley1996730212U.S.A.ColoradoTellerEast-central Colorado: Mosquito Range to Plains: Rampart Range: off Forest Road 341A ca 0.2 air mi N of intersection with Forest Road 341 or County Road 782, ca 7.3 air mi NW of Woodland Park.-105.137739.07824632585Along a moist drainage in grassy ponderosa pine forest with granitic-gravelly soils. Phenology: flowering.36003,1,0true