: 1.21 $2024-03-28T22:12:01-7:0054.226.126.38searchRMRM679689 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh54439Ronald L. Hartman199669161U.S.A.WyomingParkNorthern Absaroka Area: Sheep Mountain 13-14 air mi SW of Cody (center).-109.264844.47917072073Lower flanks to cut in limestone and plains on northwest corner of mountain. Phenology: flowering.RMRM679688 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh54767Ronald L. Hartman1996613165U.S.A.WyomingParkNorthern Absaroka Area: Hogan Reservoir N and W at base and slopes of Bald Ridge.-109.293544.819114021646Shale wash. Phenology: flowering.RMRM679936 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh59708Ronald L. Hartman1997813225U.S.A.WyomingParkNorthern Absaroka Area: Buffalo Bill Reservoir, ca 10 air mi ESE of Wapiti.-109.244644.43561676Area of water fluxuation and roadside. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh57007B. E. Nelson Peter Ebertowski2002613164U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: Sixmile Basin off Forest Road 918, ca 8.5 air mi SSE of Osage; ca 9 air mi W of Newcastle.-104.389643.865712191250Stream channel in bottom of basin. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1672Peter 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: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2038Peter 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: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh56837Ronald L. Hartman Amy J. Roderick and B. A. Packer199765156U.S.A.WyomingCarbon[location and coordinates withheld]19812012Broken slate (shale) with ponderosa pine, rocky sandstone ridges, and alkaline flats. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh27Peter J. Ebertowski B. E. Nelson2002616167U.S.A.WyomingConverseThunder Basin National Grassland and Vicinity: along Steckley or Forest Road 942 just below Robertson Flat, ca 44.5 air mi N of Douglas; ca 13 air mi NNW of Bill.-105.370243.398815241539Right of way with adjacent grassland and sagebrush. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2919Peter 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: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh739Peter 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4262Peter J. Ebertowski200364155U.S.A.WyomingWestonThunder Basin National Grassland and Vicinity: ridge S and E of Patrick Creek and Thornton on County Road 32, ca 7 air mi NW of Upton; ca 13 air mi SE of Moorcroft.-104.731444.146413231371Sagebrush grassland with rocky clay patches. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6866Peter 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 & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6985Peter J. Ebertowski2003718199U.S.A.WyomingNiobraraThunder Basin National Grassland and Vicinity: grassland ridge separating South Cottonwood and North Oat creeks, on Boner or County Road 18, ca 50 air mi S of Newcastle; ca 29 air mi NE of Lusk.-104.17243.108713101353Grassland with clayey soils. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7162Peter J. Ebertowski2003725206U.S.A.WyomingCrookThunder Basin National Grassland and Vicinity: Duck Creek, on U.S. Hwy 14, ca 3 air mi NE of Moorcroft; ca 22 air mi E of Gillette.-104.912744.31412561262Creek bank lined with snowberry. Phenology: vegetative only.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7945Peter J. Ebertowski200389221U.S.A.WyomingCampbellThunder Basin National Grassland and Vicinity: Porcupine Creek, on two-track off Matheson or County Road 70, ca 13 air mi SE of Wright; ca 49 air mi S of Gillette.-105.369143.600914451454Creek bank. Phenology: fruiting.RMRM913400 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40788Erwin F. Evert2004611163U.S.A.WyomingBig HornBighorn Basin: along Dry Creek 0-1/3 mi E of Wyo Hwy 32, 0.5 mi N of U.S. Hwy 14.1301Weedy riparian area with Salix exigua, Elaeagnus angustifolia, Sporobolus airoides, and in wetter areas Typha latifolia.RMRM913476 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40874Erwin F. Evert2004618170U.S.A.WyomingBig HornBighorn Basin: along Little Dry Creek Road 3/4 mi E of Wyo Hwy 32, 5 mi N of U.S. Hwy 14, 20 mi W of Greybull.1399In and around dry reservoir with Scirpus validus, Typha latifolia, and Tamarix chinensis.RMRM912774 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41182Erwin F. Evert200565156U.S.A.WyomingBig HornBighorn Basin: ca 1/3 mi W of Wyo Hwy 32 and 1/4 mi W of Coon Creek.1359Around small reservoir with Tamarix chinensis, Salix exigua, and Iva axillaris. Phenology: buds.RMRM618837 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh18654Erwin F. Evert199068159U.S.A.WyomingPark[location and coordinates withheld]1426Gully bottom along irrigation runoff channel with Cirsium arvense, Carex lanuginosa, Poa pratensis, Smilacina stellata, and Elaeagnus angustifolia.RMRM619435 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh19235Erwin F. Evert1990626177U.S.A.WyomingParkBighorn Basin: around the western most of the Newton Lakes, ca 4 mi NW of Cody.-109.128544.54281591Wet soil along lake margin with Scirpus acutus, Hordeum jubatum, Scirpus maritimus var. paludosus and Potentilla paradoxa.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh24941Erwin F. Evert1993613164U.S.A.MontanaCarbon[location and coordinates withheld]Marsh immediately west of highway with Juncus balticus, Carex praegracilis, and Triglochin.RMRM780370 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh26644Erwin F. Evert199465156U.S.A.MontanaCarbonShupak Pond, ca 6 mi NNW of Belfry.-109.036445.22621189Disturbed sagebrush-grassland S of pond with Erigeron pumilus, Alyssum desertorum, Lappula redowskii, and Bromus tectorum. Phenology: buds.RMRM788199 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh30778Erwin F. Evert199664156U.S.A.MontanaCarbonRidge 2.5 mi SW of Fromberg and 3/4 mi W of U.S. Highway 310.-108.935245.35591150Along irrigation ditch with Equisetum arvense, Iva axillaris, and Alopecurus arundinaceus. Phenology: flowering & fruiting.RMRM818471 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33064Erwin F. Evert1997621172U.S.A.WyomingHot SpringsBighorn Basin: ridge and sandstone outcroppings N of Upper Cottonwood Creek Road, ca 28 mi NW of Thermopolis.-108.5243.82111585Sagebrush-grassland with Bouteloua gracilis, Bromus tectorum, and Sarcobatus vermiculatus. Phenology: vegetative only.RMRM819715 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33251Erwin F. Evert1997622173U.S.A.WyomingHot SpringsBighorn Basin: Public Fishing Access Site along the west side of the Big Horn River, ca 4 mi N of Thermopolis.1295Weedy, riparian area with Elaeagnus angustifolia, Bromus tectorum, Sporobolus airoides, and Alyssum desertorum. Phenology: flowering & fruiting.RMRM818716 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33297Erwin F. Evert1997622173U.S.A.WyomingHot SpringsBighorn Basin: Public Fishing Access Site along the east side of the Big Horn River, just NE of Lucerne, 7 mi N of Thermopolis.1280Weedy, riparian area in sandy soil with Bromus tectorum, Malcolmia africana, Sporobolus airoides, and Centaurea repens. Phenology: flowering & fruiting.RMRM819961 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh34599Erwin 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.RMRM820312 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh35186Erwin F. Evert1998613164U.S.A.WyomingHot SpringsBighorn Basin: along the railroad tracks at Lucerne, 6 mi N of Thermopolis.-108.16643.73481326With Distichlis stricta, Sisymbrium altissimum, and Kochia scoparia. Phenology: flowering & fruiting.RMRM794952 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh369Jeanette Flaig Cindy Villa and Mike Wisdom2003716197U.S.A.ColoradoRio Grande[location and coordinates withheld]2428Pinyon pine/juniper woodland. Phenology: flowering & fruiting.RM673286 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh30993B. E. Nelson Laura Welp199463154U.S.A.WyomingCarbonGreat Divide Basin Area: Great Divide Basin: Separation Creek along Buzzard Road on Separation Flats, NE of Rendle Point, ca 16 air mi NNW of Rawlins.-107.301142.022219631966Clay flats above creek. Phenology: flowering.RM673284 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh45870Ronald L. Hartman Laura Welp1994531151U.S.A.WyomingSweetwater[location and coordinates withheld]2042Stabilized sand dunes and adjacent pond. Phenology: flowering & fruiting.RM673285 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh45930Ronald L. Hartman1994620171U.S.A.WyomingCarbon[location and coordinates withheld]20732118Sagebrush slopes, area beneath snow fence, and shale and sandstone outcrops. Phenology: fruiting.RM673283 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh46080Ronald L. Hartman1994621172U.S.A.WyomingCarbonGreat Divide Basin Area: Great Divide Basin: Willow Hill area, ca 13 air mi NW of Rawlins.-107.33722241.96583321032164Limestone and sandstone outcrops, sandy and clay slopes with stream and pond below. Phenology: flowering & fruiting.RM674315 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5801Laura Welp1995630181U.S.A.WyomingSweetwaterGreat Divide Basin Area: Great Divide Basin: Buffalo Hump, ca 8 air mi SW of Bastard Butte; ca 10 air mi NE of The Pinnacles.-108.507242.097520882106Partially vegetated south facing slope with grasses and scattered sagebrush; fine soil. Phenology: flowering.RM674314 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6549Laura Welp1995721202U.S.A.WyomingCarbonGreat Divide Basin Area: Great Divide Basin: flat near Riddle Creek, ca 5.5 air mi S of Ferris; ca 3 air mi N of Windy Ridge.-107.143142.1369Low flat at base of sand dunes; clay soil with sand. Phenology: flowering.RM674313 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6855Laura Welp1995725206U.S.A.WyomingCarbon[location and coordinates withheld]1998Shallow lake with dense grasses; clay soil with sand. Phenology: flowering & fruiting.RM674312 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7143Laura Welp199583215U.S.A.WyomingFremontGreat Divide Basin Area: Green Mountain: ca 5.5 air mi SE of Jeffrey City; ca 9 air mi NE of Crooks Peak.-107.782242.441119511981Moist narrow draw with grasses in sandstone hills. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh64551Ronald L. Hartman Joy Handley199965156U.S.A.IdahoWashingtonPayette National Forest and Vicinity: Raft Creek and Snake River-117.069244.6076401021Very weedy area along river and creek, and on shaly slopes. Phenology: flowering.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3806Thomas Cramer1994814226U.S.A.WyomingLincoln[location and coordinates withheld]2210Reservoir edge, meadows, and sagebrush. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4576Thomas 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4658Thomas 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4692Thomas 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh36526B. E. Nelson C. H. Refsdal199578189U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Snow Hollow, ca 1.5 air mi E of Idaho, ca 5.5 air mi SW of Cokeville; ca 29 air mi NW of Kemmerer.-111.014642.015720732103Heavily grazed meadow in the canyon bottom. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh10018Thomas Cramer Jane T. Kellett1995730211U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Underwood Canyon, ca 8 air mi SE of Cokeville.-110.860142.000821952256Creekside willows and meadows with sagebrush edges. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1551Grace M. Kostel200467159U.S.A.NebraskaSiouxOglala National Grassland and Vicinity: ca 22-22.5 air mi NNW of Crawford and 2 mi E of NE Hwy 71 and NE Hwy 2.-103.57583342.99583311121128In alkaline draw and adjacent slopes of clay soils. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2852Grace 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4189Grace M. Kostel2004726208U.S.A.South DakotaCusterBuffalo Gap National Grassland and Vicinity: ca 22 air mi SE of Hermosa on the Cheyenne River.-103.055743.5158792On west bank of river in sand soil. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh446Grace M. Kostel B. E. Nelson2004521142U.S.A.South DakotaFall RiverBuffalo Gap National Grassland and Vicinity: S of U.S. Hwy 18, ca 5 air mi WSW of Edgemont.-103.959643.2895990In wide draw bottom of Artemisia tridentata shrubland and grassland. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4657Grace M. Kostel20031015288U.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 banks of creek. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4703Grace M. Kostel20031013286U.S.A.South DakotaPenningtonBuffalo Gap National Grassland and Vicinity: ca 25 air mi ENE of Hermosa and 3 mi E of Swinehart Hill near the Cheyenne River.-102.68143.8941945Floodplain with clay and rock and sand soil; area is infested with Tamarisk seedlings and young trees to 1.5" dbh. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4715bGrace M. Kostel20031013286U.S.A.South DakotaCusterBuffalo Gap National Grassland and Vicinity: ca 15.5-16 air mi SSE of Hermosa along French Creek.-103.030243.6377929Creek banks with moist clay and silt soils. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8947Grace 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: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8956Grace 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: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9585Grace 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9608Grace 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.RMRM950267 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh83479Ronald L. Hartman2006816228U.S.A.New MexicoTaosCarson National Forest and Vicinity: cut and fill along old Chili Line Railroad Grade and adjacent roadside along U.S. 285.-105.974436.90332500Disturbed areas. Phenology: flowering & fruiting.RMRM802173 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh52628B. E. Nelson Luanne Lum2001610161U.S.A.WyomingBig HornBighorn Basin: along Lane 42 ca 3 air mi N of Sheep Mountain and ca 0.3 mi S of the Greybull River, ca 4 air mi S of Burlington; ca 19.5 air mi W of Basin.-108.419944.37861341Roadside on wooded clay flats with irrigation ditch. Phenology: flowering.RMRM802172 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh52695B. E. Nelson2001612163U.S.A.WyomingWashakieBighorn Basin: along Fifteen Mile or BLM Road 1429, ca 1 air mi W of North Fork Fifteen Mile Creek, ca 14.5 air mi NW of Worland.-108.199344.116713171323Dry flats adjacent to reservoir. Phenology: flowering & fruiting.RMRM802171 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh52753B. E. Nelson2001612163U.S.A.WyomingWashakieBighorn Basin: Flume Reservoir on a tributary of Wildcat Gulch, along BLM Road 1406, ca 4 air mi SE of Neiber; ca 9 air mi SSW of Worland.-108.006243.89913231335Clay flats around the reservoir. Phenology: flowering & fruiting.RMRM802174 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh150Luanne Lum2001618169U.S.A.WyomingHot SpringsBighorn Basin: along County Road 26, ca 5 air mi N of Thermopolis.-108.205843.70613411371Juniper woodland. Phenology: flowering & fruiting.RMRM802175 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh97Luanne Lum2001615166U.S.A.WyomingHot SpringsBighorn Basin: along County Road 4, ca 4 air mi NE of Thermopolis, E of the Big Horn River.-108.146143.691613191364Riparian with Populus (cottonwood) and Salix. Phenology: flowering.RMRM933600 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh57573B. E. Nelson2002716197U.S.A.WyomingParkBighorn Basin: along Fifteenmile Creek at Fifteenmile Creek or BLM Road 1429 crossing, ca 3 air mi W of Dead Indian Hill, ca 14 air mi E of Meeteetse.-108.601544.19051487Silt/sand or cobble bars, banks of stream channel, and sandy flats with mixed species cottonwood woodland. Phenology: flowering & fruiting.RMRM933599 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh57637B. 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.-108.07744.21941295Clay slopes and flats adjacent to the reservoir area, with Atriplex and Artemisia. Phenology: flowering & fruiting.RMRM933598 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh57699B. 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.-108.177844.39311228Muddy to dry flats adjacent to the reservoir. Phenology: flowering & fruiting.RMRM933597 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh57752B. 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.-108.238444.378612431250Open flats. Phenology: flowering & fruiting.RMRM933596 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh57905B. 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 & fruiting.RMRM933595 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh57938B. 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2201Amy J. Roderick1997712193U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: butte S of County Road 324, ca 5 air mi ENE of Sinclair; ca 9.5 air mi E of Rawlins.-107.031741.82032012Dry shale slope dominated by rabbitbrush, sagebrush, snakeweed, and selenium indicators. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2764Luanne Lum2002616167U.S.A.WyomingWashakieBighorn Basin: within Worland ca 0.2 air mi E of Wyoming Street at southern edge of agriculture field on Lower Hanover Canal.-107.938744.0151240Irrigation drainage canal. Phenology: flowering & fruiting.RMRM933607 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2908Luanne Lum2002620171U.S.A.WyomingBig Horn[location and coordinates withheld]12501253Irrigation ditch. Phenology: flowering & fruiting.RMRM933606 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3722Luanne Lum200276187U.S.A.WyomingBig Horn[location and coordinates withheld]1197Agricultural ditch. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2222Amy 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 & fruiting.RMRM933594 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4791Luanne Lum Michelle Wilson2002723204U.S.A.WyomingBig HornBighorn Basin: along Lane 7 and Sage Creek, ca 1.5 air mi E of Deaver and ca 7.8 air mi WNW of Lovell.-108.567244.893312191231Riparian and sagebrush. Phenology: buds.RMRM933605 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4955Luanne 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.RMRM933604 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5079Luanne Lum2002730211U.S.A.WyomingParkBighorn Basin: along Dry Creek at U.S. Hwy 14, 16, and 20 crossing, ca 21 air mi ESE of Cody; ca 29.5 air mi WSW of Greybull.-108.641844.465514631469Sagebrush. Phenology: flowering & fruiting.RMRM933603 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5096Luanne 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 & fruiting.RMRM933602 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5435Luanne Lum200285217U.S.A.WyomingBig HornBighorn Basin: at Five Springs Creek, ca 16 air mi ESE of Lovell.-108.09644.788913031304Sagebrush on sandy soil. Phenology: flowering & fruiting.RMRM933601 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5506Luanne Lum200288220U.S.A.WyomingParkBighorn Basin: at Custer Lake W of County Road 3FK in Oregon Basin, ca 10 air mi SE of Cody.-108.904144.436515761579Sagebrush on sandy soil. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2288Amy 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 & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2308Amy J. Roderick1997714195U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Sage Creek W of County Road 401, ca 22 air mi S of Rawlins; ca 19 air mi W of Saratoga.-107.194941.47582164Along creek; surrounded by greasewood, sagebrush, wild rose, and wild licorice. Phenology: flowering & fruiting.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4719Lynn Marie Moore199562153U.S.A.ColoradoMontezumaUpper Dolores River Drainage and Adjacent Areas: ca 14 air mi NW of Cortez in Sandstone Canyon, County Road W.-108.839737.493718292012Pinyon-juniper woodland, Purshia, Artemesia, and rabbitbrush on west-face of canyon and riparian area along creek. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2545Amy 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: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh64971B. E. Nelson Rob Massatti and Rachel Newton200568159U.S.A.WyomingFremontWetlands and Adjacent Areas: Fivemile Creek Bay of Boysen Reservoir and along Fivemile Creek, ca 4.5 air mi W of Shoshoni; ca 17.5 air mi NE of Riverton.-108.192243.238814391451Along the edge of the reservoir. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh65182B. 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.-108.449343.25241585Sagebrush flats adjacent to the reservoir. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh65239B. E. Nelson2005613164U.S.A.WyomingFremontWetlands and Adjacent Areas: Middle Reservoir along Cottonwood Drain on Sand Mesa, ca 12.5 air mi NW of Shoshoni; ca 20.5 air mi N of Riverton.-108.326143.320415061509Dryer areas around the reservoir. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh65256B. E. Nelson2005613164U.S.A.WyomingFremontWetlands and Adjacent Areas: along Muddy Creek ca 3 air mi WSW of Lake Cameahwait (Bass Lake), ca 10.5 air mi WNW of Shoshoni; ca 18 air mi N of Riverton.-108.30743.28251469Bench along the creek with Russian olive and snowberry. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh65390B. E. Nelson2005617168U.S.A.WyomingFremontWetlands and Adjacent Areas: Carr Reservoir on Twin Creek along Twin Creek or County Road 19, ca 17 air mi SE of Lander.-108.500242.669317831798Edge of reservoir and mud flats above. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1396Rachel Newton200575186U.S.A.WyomingLincolnWetlands and Adjacent Areas: Slate Creek, ca 28 air mi NNE of Kemmerer.-110.087341.98941907Dry creek bed. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1437Rachel Newton200575186U.S.A.WyomingLincolnWetlands and Adjacent Areas: Hams Fork, ca 4 air mi SE of Kemmerer.-110.484341.7512017Moist banks and flood plain. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2595Amy J. Roderick1997720201U.S.A.WyomingCarbon[location and coordinates withheld]2103Moist grassy creek bed. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1502Rachel Newton200576187U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: Green River, ca 25 air mi NW of Rock Springs.-109.706241.70461903Dry uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1591Rachel Newton200577188U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: South Buckboard Recreation Site, Flaming Gorge Reservoir, ca 18 air mi SSE of Green River.-109.613941.23761823Dry rocky shores. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1624Rachel Newton200577188U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: upper Marsh Creek, ca 24 air mi S of Green River.-109.50341.15751852Moist banks. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1756Rachel Newton2005710191U.S.A.WyomingCarbonWetlands and Adjacent Areas: Pass Creek, ca 33 air mi WSW of Medicine Bow.-106.038541.70912000Dry creek banks. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1776Rachel 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1835Rachel Newton2005711192U.S.A.WyomingNatronaWetlands and Adjacent Areas: Pathfinder Reservoir, ca 41 air mi SE of Casper.-107.0642.50811735Dry uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2092Rachel Newton2005719200U.S.A.WyomingCarbonWetlands and Adjacent Areas: Muddy Creek, ca 21 air mi N of Baggs.-107.766941.32531922Moderately grazed banks and flood plains. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2101Rachel Newton2005719200U.S.A.WyomingCarbonWetlands and Adjacent Areas: spring-fed creek, ca 15 air mi NE of Baggs.-107.571341.23441960Dry creek bed and banks. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2454Rachel Newton2005725206U.S.A.WyomingNatronaWetlands and Adjacent Areas: Edness Kimbell Wilkins State Park: North Platte River, ca 8 air mi E of Casper.-106.17542.85831578Dry uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2481Rachel Newton2005725206U.S.A.WyomingAlbanyWetlands and Adjacent Areas: flooded highway easement, ca 12 air mi SE of Medicine Bow.-105.999641.81942089Moist uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2519Rachel 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2728Rachel Newton2005729210U.S.A.WyomingCarbonWetlands and Adjacent Areas: North Platte River, ca 12 air mi NE of Encampment.-106.727241.33172045Dry uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh274Rachel Newton2005615166U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: Pacific Creek, ca 14 air mi NE of Farson.-109.262742.18362067Sandy banks of creek. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2971Rachel Newton200583215U.S.A.WyomingAlbanyWetlands and Adjacent Areas: Rock Creek, 16 air mi SE of Medicine Bow.-106.004741.72282059Moist banks and flood plains. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3057Rachel Newton200584216U.S.A.WyomingCarbonWetlands and Adjacent Areas: Gooseberry Creek, ca 36 air mi NNE of Rawlins.-106.891942.24871694Dry uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3107Rachel 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3146Rachel Newton200586218U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: Salt Wells Creek, ca 15 air mi SE of Rock Springs.-108.936741.40222000Dry uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2611Amy J. Roderick1997720201U.S.A.WyomingCarbon[location and coordinates withheld]2091Grassy creek bed. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3172Rachel 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3183Rachel Newton200586218U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: sagebrush wetlands, ca 36 air mi NW of Rock Springs.-109.80441.87471911Dry uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3211Rachel Newton200587219U.S.A.WyomingSweetwaterWetlands and Adjacent Areas: Green River, ca 45 air mi NW of Rock Springs.-109.920641.92411881Dry uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3245Rachel Newton200587219U.S.A.WyomingLincolnWetlands and Adjacent Areas: Hams Fork, ca 8 air mi NW of Kemmerer.-110.614741.88292123Dry rocky uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3291Rachel Newton200587219U.S.A.WyomingUintaWetlands and Adjacent Areas: Muddy Creek, ca 19 air mi E of Evanston.-110.631941.30052059Dry, rocky uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3296Rachel Newton200587219U.S.A.WyomingUintaWetlands and Adjacent Areas: Muddy Creek, ca 11 air mi NW of Lyman.-110.455541.432002Moist banks and flood plains. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3315Rachel 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3356Rachel Newton2005810222U.S.A.WyomingFremontWetlands and Adjacent Areas: Crooks Creek, ca 6 air mi S of Jeffrey City.-107.849642.42531948Dry uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3394Rachel Newton2005810222U.S.A.WyomingFremontWetlands and Adjacent Areas: Sweetwater River, ca 38 air mi SE of Lander.-108.077342.57991971Dry uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3428Rachel Newton2005810222U.S.A.WyomingFremontWetlands and Adjacent Areas: Carr Reservoir, ca 17 air mi SE of Lander.-108.499942.66791793Dry uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3449Rachel Newton2005811223U.S.A.WyomingFremontWetlands and Adjacent Areas: pond, ca 22 air mi NE of Riverton.-108.738643.19311632Dry uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3490Rachel Newton2005811223U.S.A.WyomingFremontWetlands and Adjacent Areas: Middle Reservoir, ca 21 air mi N of Riverton.-108.336743.32031521Along shoreline. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh54Rachel Newton2005610161U.S.A.WyomingFremontWetlands and Adjacent Areas: Beaver Creek, ca 24 air mi SE of Lander.-108.334842.71981694Streamside, flood plains up to ridgetop. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh812Rachel Newton2005622173U.S.A.WyomingAlbanyWetlands and Adjacent Areas: Twin Buttes Lake, ca 16 air mi SW of Laramie.-105.851941.23642200Sandy, rocky uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh860Rachel Newton2005622173U.S.A.WyomingAlbanyWetlands and Adjacent Areas: Lake Hattie Reservoir, ca 17 air mi SW of Laramie.-105.902841.23852212Moist clay flood plains. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2633Amy 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 & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5030Rachel Newton2006617168U.S.A.WyomingJohnson[location and coordinates withheld]1337Shaded river banks and floodplain. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5268Rachel Newton2006623174U.S.A.WyomingFremontWetlands and Adjacent Areas: Boysen Reservoir, ca 3 air mi WNW of Shoshoni.-108.1612143.246971399Disturbed sandy, rocky uplands. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5273Rachel Newton2006623174U.S.A.WyomingFremontWetlands and Adjacent Areas: Bridger Creek, ca 3 air mi NW of Lysite.-107.7219143.289631572Dry rocky uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5626Rachel Newton2006630181U.S.A.WyomingParkWetlands and Adjacent Areas: Deaver Reservoir, ca 2 air mi NNW of Deaver; ca 12 air mi NE of Powell.-108.6382344.89871354Dry sandy uplands. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2734Amy 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.RMRM196597 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3364C. L. Porter1944624176U.S.A.WyomingCarbonShirley Basin area: Little Medicine Bow River.-106.127142.2539Alkali mud along stream course. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2812Amy 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: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2840Amy J. Roderick1997729210U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: tributary of Second Sand Creek, ca 7.6 air mi NE of Elk Mountain townsite; ca 10.4 air mi SW of Medicine Bow townsite.-106.313941.77662073Dry swale with moist patches. Phenology: flowering & fruiting.RMRM806997 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh76412Ronald L. Hartman2002813225U.S.A.New MexicoRio ArribaSanta Fe National Forest and Vicinity: Jemez Mountains: 6.5 road mi N of Espanola; intersection of U.S. Hwy 285 and NM Hwy 74, to 1 mi SE.-106.10651736.0770671756Roadside. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2858Amy J. Roderick1997729210U.S.A.WyomingCarbon[location and coordinates withheld]2128Dry creek bed. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2899Amy J. Roderick1997729210U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Second Sand Creek, ca 7 air mi NE of Elk Mountain townsite; ca 11 air mi SW of Medicine Bow townsite.-106.352741.77662134Dry creek bottom. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2920Amy 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.RMRM751348 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2507Bonnie Heidel200395248U.S.A.WyomingGoshenSoutheastern Plains: Goshen Hole: Fort Laramie National Historic Site: west boundary along Wyo Hwy 160 ca 2.2 air mi WSW of Fort Laramie (town).-104.563142.20481295Valley flats beside highway r-o-w on gravelly sand loam, southeast slope 2%; Elymus smithii herbaceous vegetation; associated with Sporobolus cryptandrus, Opuntia polyacantha, Bromus tectorum, Kochia scoparia. Common. Phenology: vegetative only.RMRM609482 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6941Erwin F. Evert198479191U.S.A.WyomingParkNorth Fork Shoshone River Drainage: Absaroka Mountains: ca 2 mi S of Wapiti, just S of Stonebridge Reservoir.-109.40644.435619201951Seepage area just above reservoir. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3085Amy 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.RMRM682092 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh210George P. Jones1991621172U.S.A.WyomingNatronaNorth Platte River Valley: South Fork Casper Creek.-106.408942.88781628Herbaceous floodplain community of Elymus smithii and Iva axillaris with patchy shrub cover adjacent to stream on mixed alluvial soil. Phenology: flowering & fruiting.RMRM93102 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.Willard N. Clute1920715197U.S.A.ArizonaCoconinoPainted Desert near Tuba.-111.2288936.11931463Cultivated ground; common. Collected 15-31 Jul 1920. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3141Amy J. Roderick199782214U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Seminoe Reservoir E of County Road 351 on BLM Road 3118, ca 18 air mi NE of Sinclair.-106.895942.00942012Moist sandy road bed dominated by Grindelia squarrosa. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3181Amy 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.RMRM681779 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh193Michele Barlow1991712193U.S.A.WyomingNatronaBates Hole: Bolton Creek, ca 3.5 air mi W of Wyo Hwy 487; ca 1.5 air mi NW of Haystack Buttes; ca 18 air mi S of Casper.-106.509542.56931725Populus angustifolia stand along narrow creek channel on mixed alluvium with understory of Elymus trachycaulus, Agrostis stolonifera, and Melilotus officinalis. Phenology: flowering & fruiting.RMRM682111 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh240Michele Barlow199186218U.S.A.WyomingNatronaNorth Platte River Valley: east bank of North Platte River, ca 0.1 mi N of confluence of Bates Creek.-106.607842.70041597Shepherdia argentea shrub community parallel to main channel at edge of floodplain and on first terrace with understory of Poa pratensis, Agrostis stolonifera, and Cirsium arvense on cobbles and alluvium. Phenology: fruiting.RMRM703745 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh79Michele Barlow199167158U.S.A.WyomingPlatteSoutheastern Plains: north bank of the North Platte River (Wyoming Game and Fish Department Rawhide Unit).-104.313642.18321259Populus deltoides community on north side of river with shrubby understory. Phenology: flowering & fruiting.RMRM726905 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh519Patricia P. Douglas B. E. Nelson, C. A. Popolizio, R. M. Smith1995822234U.S.A.WyomingPlatteCamp Guernsey: mouth of Sawmill Canyon along North Platte River 3.7 km S of Baldy Mountain, ca 2 km NW of Impact Area.1359Sagebrush grassland sandy slope with Artemisia, Bromus, Heterotheca, and Plantago spp. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3215Amy 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: fruiting.RMRM734042 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9264Richard W. Scott1995616167U.S.A.WyomingFremontW of Roger's Mtn.1768Open ridgetops. Phenology: flowering.RMRM734043 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9264Richard W. Scott1995616167U.S.A.WyomingFremontW of Roger's Mtn.1768Open ridgetops. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5967Robert D. Dorn199568159U.S.A.WyomingBig Horn1 mi N of Lucerne.-108.165443.7491310Roadside with Polygonum and Kochia.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6591Robert D. Dorn199591244U.S.A.WyomingSublette10 mi S of Boulder.-109.70542.59992195Roadside with Agropyron and Grindelia.RMRM712187 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh72470Ronald L. Hartman2001721202U.S.A.New MexicoSandovalValles Caldera National Preserve: Jemez Mountains: Redondo Creek, 2.2-1.1 air mi SE of west entrance.-106.59758335.8562782469Meadow, ponderosa pine savanna, stream bank. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3286Amy 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.-106.954141.77661981Gravelly area among fort ruins; disturbed. Phenology: flowering & fruiting.RMRM580275 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh10560Walter Fertig Jane Struttmann199181213U.S.A.WyomingCarbonNorth Platte River Drainage: banks of North Platte River, ca 4 air mi NW of Saratoga.2042Gravelly-sandy riverbank adjacent to mixed willow/cottonwood grove. Phenology: flowering & fruiting.RMRM603106 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh16115Walter Fertig1995726207U.S.A.WyomingSweetwaterGreat Divide Basin: Jack Morrow Hills; dry lake along County Road 15, ca 1.3 mi N of Greasewood Wash.2036Dry alkaline lake bottom dominated by Polygonum aviculare, Iva, and Rorippa. Phenology: flowering.RMRM682438 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh18976Walter Fertig1999828240U.S.A.WyomingCarbonGreat Divide Basin: unnamed drainage on west side of U.S. Hwy 287, ca 2.25 air mi SSE of Lamont; ca 4.5 mi N of Bull Spring Lake.-107.454342.18122003Banks of seasonally wet wash on alkali-affected gray to tan clay soils; meadow along wash dominated by Juncus balticus, Distichlis spicata, and Puccinellia nuttalliana; low clay mounds on bank with Sarcobatus, Atriplex gardneri, and Sporobolus airoides. Phenology: fruiting.RMRM682439 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh18991Walter Fertig1999828240U.S.A.WyomingNatronaSweetwater River Plateau: Jackson Lake, ca 1-1.5 mi S of the Sweetwater River, ca 2 mi N of Wyo Hwy 220, ca 6 mi W of Devils Gate.-107.335142.43821841Scirpus nevadensis-Distichlis spicata community on moist but not flooded alkali-clay soils near banks of lake (on upslope side of denser Scirpus pungens communities). Phenology: fruiting.RMRM703182 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh19732Walter Fertig2001718199U.S.A.WyomingAlbanyLaramie Basin: south side of Spring Creek on south side of Laramie, ca 0.5 mi N of I-80 at Thrid Street exit.-105.584241.29672195Low swale on moist clay-rich soil in dense stand of Elymus smithii/Juncus balticus within matrix of Sarcobatus vermiculatus vegetation. Phenology: fruiting.RMRM782105 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh21203Walter Fertig2004720202U.S.A.WyomingLincolnOverthrust Belt: Twin Creek drainage on north side of railroad 0.2 mi N of U.S. Hwy 30, ca 1.5 air mi SW of Fossil Butte.2057Artemisia tridentata var. tridentata/Chrysothamnus nauseosus/Sarcobatus vermiculatus/Distichlis stricta/Elymus cinereus community bordering stream on clay banks. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3463Amy J. Roderick1997810222U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Dugway Recreation site along North Platte River, ca 6 air mi NE of Sinclair; ca 9.4 air mi NE of Rawlins.-107.051141.86391951Willow thickets, shallow ponds, and gravelly patches in wet, disturbed area. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3488Amy J. Roderick1997812224U.S.A.WyomingCarbon[location and coordinates withheld]2192Grassy meadow near brook. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3591Amy 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3633Amy 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.RMRM106684 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh703Arthur C. McIntosh192577188U.S.A.South DakotaMeadeBear Butte Lake.-103.437744.4598963969On mud flats of lake. Frequent. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3655Amy J. Roderick1997814226U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Pathfinder Reservoir: National Wildlife Refuge N of County Road 410, ca 24 air mi NE of Three Forks Junction.-107.042342.51121786Sagebrush grassland on sandy shelf above reservoir. Phenology: flowering & fruiting.RMRM122780 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh18765W. H. Over1930710191U.S.A.South DakotaHardingLittle Missouri River.Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3770Amy J. Roderick1997817229U.S.A.WyomingCarbon[location and coordinates withheld]2088Big sagebrush draw in surrounding sagebrush grasslands; dry sandy soil. Phenology: flowering.RMRM399629 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4265BBetsy E. Neely S. Galatowitsch1987611162U.S.A.ColoradoMoffatDinosaur National Monument: Gates of Lodore Campground: ca 1/4 mi SE of Lodore Ranger station.1646Sandy soils of flat terrace deposits in bottomland with Chrysothamnus, Agropyron repens and Elymus cinerus. Phenology: flowering.RMRM398574 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1903Bruce A. Stein1984815228U.S.A.ColoradoMoffatYampa River between Craig and Maybell; north side of Duffy Mountain near Sand Spring Gulch.-107.83333340.4166671859Sagebrush scrub along and above river; sandy soil. Phenology: flowering & fruiting.RMRM207538 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4129C. L. Porter194754124U.S.A.ColoradoKiowaAt reservoirs between Lamar and Eads.1219Clayey slopes. Phenology: flowering.RMRM33203 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh110Carl F. Baker1901611162U.S.A.ColoradoMesaRegion of the Gunnison Watershed: Grand Junction.1399Phenology: flowering & fruiting.RMRM133328 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1379Earl F. Castetter1932530151U.S.A.New MexicoSandovalCochiti.-106.331535.617191829Low ground along river. Phenology: flowering & fruiting.RMUSFS480173 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh214E. R. Ware1932910254U.S.A.ColoradoGarfieldWhite River National Forest.1768Level clay, open areas; with Chenopodium, leontodon, Medicago sativa; waste ground. Phenology: flowering.RMRM81886 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh939Edwin B. Payson191598251U.S.A.ColoradoMontroseMontrose.1768Alkaline flats. Phenology: flowering & fruiting.RMRM132886 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh12204Francis Ramaley1929720201U.S.A.ColoradoAlamosaN end of San Luis Valley.Fallow field. Phenology: flowering.RMRM140115 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh14150Francis Ramaley1934710191U.S.A.ColoradoConejosEspinosa.Phenology: flowering & fruiting.RMRM81628 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9896Francis Ramaley1914617168U.S.A.ColoradoJeffersonChurch's Lake.Phenology: flowering.RMRM155432 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh244George E. Osterhout189477188U.S.A.ColoradoWeldWindsorPhenology: flowering.RMRM155430 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4158George E. Osterhout190978189U.S.A.ColoradoWeldWindsor.Phenology: flowering & fruiting.RMRM312255 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.George E. Osterhout1915720201U.S.A.ColoradoMontroseMontrose.Phenology: flowering.RMUSFS480176 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshS-95Leon C. Snyder1938611162U.S.A.ColoradoWeld-104.743440.85031646Clay soil. Phenology: flowering.RMRM47338 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3271no collector189265157U.S.A.ColoradoProwersLamar.Phenology: flowering & fruiting.RM677907 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh43076B. E. Nelson1997819231U.S.A.WyomingNatrona[location and coordinates withheld]18781926Roadside and adjacent bladed areas. Phenology: flowering & fruiting.RMUSFS480188 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh670Paul L. Ginter194292245U.S.A.ColoradoAlamosa3 mi S of Alamosa.2286Level, adobe gravel, along ditches with Lactuca, Salsola and Stianion. Phenology: flowering & fruiting.RMRM172036 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh51Robert M. Muir193772183U.S.A.ColoradoWeld-104.705340.8648Sandy loam, abandoned field. Phenology: flowering.RMRM299490 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1984Ronald L. Hartman1968617169U.S.A.New MexicoColfaxPhilmont Scout Ranch: near Cimarron, 1 me E of Webster Reservoir.-104.9980936.492492134Along road and on plains. Phenology: flowering.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh26352B. E. Nelson Russ Nelson1993625176U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Tunp Range: Gooseberry Spring and vicinity between Boulder and Rock Creek ridges, ca 25 air mi WNW of Kemmerer; ca 6 air mi NE of Sage Junction.-110.90388941.86416720182073Steep slopes and bottom of gully. Phenology: flowering & fruiting.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33479Ronald L. Hartman1992627179U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Commissary Ridge: ca 0.5 air mi SE of Kemmerer Reservoir along powerlines E of paved road; ca 12 air mi NW of Kemmerer.-110.63638941.93194421792256Rolling sagebrush-grasslands, southwest exposure with some aspen on northeast side of gravelly ridge, also along roadside. Phenology: flowering.RM677906 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh58226Ronald L. Hartman1997625176U.S.A.WyomingAlbanyLaramie Range: ridge E of south end of Wheatland Reservoir No. 2, ca 7.5 air mi NW of Morton Pass.-105.615541.776621342256Badlands on east side, sagebrush-grassland above. Phenology: vegetative only.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41486Ronald L. Hartman1993722203U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: ca 6 air mi N of Kemmerer.-110.55361141.89805621952225Sagebrush slopes with serviceberry and coralberry and grassy flats. Phenology: flowering & fruiting.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41533Ronald L. Hartman1993722203U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Commissary Ridge, ca 14 air mi N of Kemmerer.-110.56194441.99972222562408Flats along stream, old homestead in aspen grove, and slope with sandstone outcrops. Phenology: flowering.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41544Ronald L. Hartman1993722203U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Commissary Ridge, ca 14 air mi N of Kemmerer.-110.56194441.99972222562408Flats along stream, old homestead in aspen grove, and slope with sandstone outcrops. Phenology: flowering & fruiting.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41722Ronald L. Hartman1993723204U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Oyster Ridge, ca 9 air mi N of Kemmerer.-110.55055642.10166722102256Streamside and sandy slopes below, sandstone outcrops and sandy ridge above. Phenology: flowering.RMRM632409 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2791Thomas Cramer199484216U.S.A.WyomingLincolnGreen River Basin: south side of Fontenelle Gap, ca 15 air mi W of Fontenelle Reservoir.-110.39694442.08472221342402Hillside sagebrush and Douglas fir stands. Phenology: flowering.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3806Thomas 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.RM670612 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38355B. E. Nelson1996710192U.S.A.WyomingCarbon[location and coordinates withheld]20272042Bottom of a dry wash. Phenology: flowering.RM670613 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39054B. E. Nelson1996718200U.S.A.WyomingSweetwater[location and coordinates withheld]21342140Roadside. Phenology: flowering.RM670614 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39514B. E. Nelson199687220U.S.A.WyomingSweetwater[location and coordinates withheld]20422048Meadow in the creek bottom with areas of salt deposits. Phenology: flowering & fruiting.RM670615 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39553B. 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.-108.648341.011520122057Disturbed sagebrush-greasewood flats along the creek. Phenology: flowering.RM670616 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39568B. 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.RM670617 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39609B. E. Nelson199688221U.S.A.WyomingSweetwaterSouth-central Wyoming: Rock Springs Uplift: along Alkali Wash below Patrick Draw or County Road 24, ca 3.5 air mi WNW of Pine Butte, ca 29 air mi SE of Rock Springs; ca 24 air mi S of Point of Rocks.-108.747841.32372149Sand bars and sandy banks along the channel. Phenology: flowering & fruiting.RM670618 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39643B. E. Nelson1996811224U.S.A.WyomingSweetwaterSouth-central Wyoming: Washakie Basin: along Bitter Creek between Black Buttes and Bitter Creek UPRR sidings, ca 30.5 air mi ESE of Rock Springs; ca 34 air mi WSW of Wamsutter.-108.610241.50920272036Sand bars and low areas along the stream channel. Phenology: flowering.RMRM670619 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39939B. E. Nelson1996815228U.S.A.WyomingCarbonSouth-central Wyoming: along Muddy Creek on the north end of Peach Orchard Flat, ca 14.5 air mi N of Baggs; ca 41 air mi SW of Rawlins.-107.678741.243419571963Banks and low benches along the stream channel. Phenology: flowering.RM670620 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39987B. E. Nelson Beth Ward1996818231U.S.A.WyomingCarbon[location and coordinates withheld]2286Bottom of old stock pond. Phenology: vegetative only.RM670621 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40042B. 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.-107.501441.476121552182Greasewood-sagebrush flat. Phenology: fruiting.RM670622 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40104B. E. Nelson1996820233U.S.A.WyomingCarbonSouth-central Wyoming: along Cottonwood Creek and McCarty Canyon or County Road 503, ca 5 air mi NNE of Dixon; ca 50.5 air mi SSW of Rawlins.-107.507641.098420482060Roadside. Phenology: flowering.RM670607 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2115Beth Ward199675187U.S.A.WyomingSweetwaterSouth-central Wyoming: Rock Springs Uplift: lower slope of Laney Rim adjacent to Gap Creek, ca 0.5 mi N of Titsworth Gap, the confluence of Gap and Beans Spring creeks; ca 26 air mi SSE of Rock Springs.-109.053741.208221582256Rim draw. Phenology: flowering.RM670608 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3082Beth Ward1996721203U.S.A.WyomingCarbon[location and coordinates withheld]21792475Moist draw. Phenology: flowering.RM670609 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3102Beth Ward1996721203U.S.A.WyomingCarbonSouth-central Wyoming: on east side of Atlantic Rim, ca 2 air mi SW of Bridger Pass; ca 20.5 air mi SSW of Rawlins.-107.463241.53422832335Near water pool. Phenology: flowering.RMRM670610 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3542Beth Ward199682215U.S.A.WyomingCarbon[location and coordinates withheld]18531855Riverside. Phenology: flowering.RM799423 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3593Beth Ward199682215U.S.A.WyomingCarbonSouth-central Wyoming: Washakie Basin: along Red Creek just above the confluence of Red and Sand creeks, ca 1 air mi N of the confluence of Sand Creek and Little Snake River; ca 10.5 air mi W of Baggs.18621868Adjacent to creek.RM670611 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3738Beth Ward199683216U.S.A.WyomingCarbonSouth-central Wyoming: Little Snake River floodplain on the south side of the river, ca 1 air mi W of the confluence of the Little Snake River and Sand Creek; ca 12 air mi WSW of Baggs.-107.887841.02618531856Moist terrace above river. Phenology: flowering & fruiting.RMRM672257 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6634Beth Ward1997716197U.S.A.WyomingSweetwater[location and coordinates withheld]18651868Steep, rocky slope immediately adjacent to river. Phenology: flowering & fruiting.RMRM672256 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6948Beth Ward1997723204U.S.A.WyomingSweetwater[location and coordinates withheld]20302288Clay draw, mid-level. Phenology: flowering & fruiting.RMRM657930 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33215Ronald L. Hartman Bruce Embury1992623175U.S.A.WyomingSubletteWyoming/Salt River Ranges: Wyoming Range: west and southwest side of Dead Indian Dome; ca 12.5 air mi NW of Big Piney.-110.268142.672522562332Sagebrush top, badlands on slopes (severe drought conditions). Phenology: flowering.RMRM657929 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33298Ronald L. Hartman Bruce Embury1992625177U.S.A.WyomingSubletteGreen River Basin: Onion Creek, ca 9 air mi SW of Daniel Junction.-110.204742.829222252237Sagebrush-grassland and alkaline stream. Phenology: flowering.RMRM657928 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33479Ronald L. Hartman1992627179U.S.A.WyomingLincolnWyoming/Salt River Ranges: Commissary Ridge: 0.5 air mi SE of Kemmerer Reservoir along powerlines E of paved road; ca 12 air mi NW of Kemmerer.-110.636441.929421792256Rolling sagebrush-grasslands, southwest exposure with some aspen on northeast side of gravelly ridge, also along roadside. Phenology: flowering.RMRM657107 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh26352B. E. Nelson Russ Nelson1993625176U.S.A.WyomingLincolnWyoming/Salt River Ranges: Tunp Range: Gooseberry Spring and vicinity between Boulder and Rock Creek ridges, ca 25 air mi WNW of Kemmerer; ca 6 air mi NE of Sage Junction.-110.903941.857220182073Steep slopes and bottom of gully. Phenology: flowering & fruiting.RMRM657108 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41486Ronald L. Hartman1993722203U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: ca 6 air mi N of Kemmerer.-110.553641.886421952225Sagebrush slopes with serviceberry and coralberry and grassy flats. Phenology: flowering & fruiting.RMRM657109 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41533Ronald L. Hartman1993722203U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Commissary Ridge, ca 14 air mi N of Kemmerer.-110.591941.987522562408Flats along stream, old homestead in aspen grove, and slope with sandstone outcrops. Phenology: flowering.RMRM657110 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41544Ronald L. Hartman1993722203U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Commissary Ridge, ca 14 air mi N of Kemmerer.-110.591941.987522562408Flats along stream, old homestead in aspen grove, and slope with sandstone outcrops. Phenology: flowering & fruiting.RMRM657111 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41722Ronald L. Hartman1993723204U.S.A.WyomingLincolnWyoming/Salt River Ranges: Salt River Range: Oyster Ridge, ca 9 air mi N of Kemmerer.-110.550642.108122102256Streamside and sandy slopes below, sandstone outcrops and sandy ridge above. Phenology: flowering.RMRM613756 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh41959Ronald L. Hartman1993724205U.S.A.WyomingSubletteUpper Green River Basin: Cretaceous Mountain/Hogsback Ridge area: Pine Grove Creek near northwest end of Cretaceous Mountain; ca 15.5 air mi SW of Big Piney.-110.367242.42692408Meadow along stream with patches of shrubs. Phenology: flowering.RMRM613755 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh42363Ronald L. Hartman1993727208U.S.A.WyomingSubletteUpper Green River Basin: Cretaceous Mountain/Hogsback Ridge Area: ca 15 air mi SW of Big Piney.-110.334242.38332256Shady slopes with sagebrush. Phenology: buds.RMRM657112 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh42789Ronald L. Hartman1993730211U.S.A.WyomingSubletteWyoming/Salt River Ranges: Salt River Range: South end of Deadline Ridge, ca 3 air mi NW of Viola.-110.397842.313622192733Rocky slopes and ridges. Phenology: flowering & fruiting.RMRM613754 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh43644Ronald L. Hartman199384216U.S.A.WyomingSubletteUpper Green River Basin: Cretaceous Mountain/Hogsback Ridge Area: Northwest corner of Cretaceous Mountain, ca 15 air mi SW of Big Piney.-110.350642.42672500Limestone outcrops and sandy slopes adjacent to gas well. Phenology: flowering.RMRM613753 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh43781Ronald L. Hartman1993813225U.S.A.WyomingLincolnUpper Green River Basin: Cretaceous Mountain/Hogsback Ridge Area: southeastern corner of Hogsback Ridge, ca 22 air mi SW of Big Piney.-110.290342.252821952317Limey, gravelly slopes and calcareous outcrops. Phenology: fruiting.RMRM613750 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh43832Ronald L. Hartman1993813225U.S.A.WyomingLincolnUpper Green River Basin: Cretaceous Mountain/Hogsback Ridge Area: 1 air mi E of Hogsback Ridge, ca 22 air mi SW of Big Piney.-110.290342.25282134Marshy area and edge of stock pond. Phenology: buds.RMRM661742 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh10661B. E. Nelson198382214U.S.A.WyomingParkBighorn Basin: at the base of Pappapau Butte along the Grey Bull River, ca 10.3 air mi SW of Meeteetse.-109.0661144.100561920Roadside.RMRM661741 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh13731B. E. Nelson1987621172U.S.A.WyomingParkBighorn Basin: Polecat Bench along Cottonwood Creek, ca 6 air mi W of Frannie; ca 14 air mi N of Powell.-108.750244.95131432Stony road banks.RMRM661740 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh13756B. E. Nelson1987621172U.S.A.WyomingParkBighorn Basin: ca 2.3 air mi W of Fannie on the road from Elk Basin Oil Field to Fannie; ca 16 air mi NNE of Powell.-108.668644.97961341Stock pond dam.RMRM661739 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh13831B. E. Nelson1987623174U.S.A.WyomingBig HornBighorn Basin: along Crystal Creek Road above Crystal Creek, ca 17 air mi SE of Lovell.-108.11944.68881280Edge of saline marsh.RMRM661738 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh13921B. E. Nelson1987625176U.S.A.WyomingBig HornBighorn Basin: along Little Dry Creek Road, ca 14 air mi NW of Greybull, ca 10.5 air mi NE of Emblem.-108.277544.62831310Dry reservoir.RMRM662737 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh13928B. E. Nelson1987625176U.S.A.WyomingBig HornBighorn Basin: Sore Finger Reservoir and vicinity, ca 15 air mi S of Lovell, ca 7.5 air mi N of Emblem.-108.4194444.61361371Reservoir margins.RMRM661737 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh14077B. 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.RMRM661736 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh14139B. E. Nelson1987630181U.S.A.WyomingBig HornBighorn Basin: along Coon Creek SW of Wyo Hwy 32, ca 9 air mi NW of Emblem, ca 17.5 air mi SW of Lovell.-108.5211144.59941310Clay flats and slopes.RMRM661735 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh15306B. E. Nelson Erik Nelson198865157U.S.A.WyomingBig HornBighorn Basin: on Fenton Pass Road, ca 6 air mi N of Tatman Mountain, ca 8 air mi SW of Burlington, ca 26 air mi W of Basin.-108.5627844.37861478Reservoir dam and banks.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh21045B. E. Nelson Robin Jones1991611162U.S.A.WyomingHot SpringsBighorn Basin: Gumbo Hills, ca 3 air mi E of Hamilton Dome, ca 17-18 air mi WNW of Thermopolis.-108.521643.766416461724Gumbo clay slopes.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh21830B. E. Nelson1991726207U.S.A.WyomingFremontOwl Creek/Bridger Mountains: Bridger Mountains: along East Fork Dry Creek at the abondoned Berger Ranch, ca 12 air mi NW of Lysite, ca 37 air mi NE of Riverton.-107.863343.39361814Abandoned hay field.RMRM318089 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2430B. E. Nelson1978927270U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: ca 7 air mi NE of Lingle, ca 11 air mi NNW of Torrington, ca 2 mi E of U.S. Hwy 85 on Kettle Rock Road along Rawhide Creek.-104.259742.2181341In upland grassland with Artemisia frigida. Abundant. Phenology: buds.RMRM661750 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7571B. E. Nelson198165156U.S.A.WyomingWashakieBighorn Basin: Six Mile Reservoir and vicinity, ca 12 air mi NNW of Worland; ca 9 air mi SW of Manderson.-108.071444.16031341Around the reservoir.RMRM661749 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7577B. E. Nelson198165156U.S.A.WyomingBig HornBighorn Basin: Six Mile Reservoir and vicinity, ca 9 air mi SW of Manderson; ca 15 air mi S of Basin.-108.067144.17121341On the dam and in the outer areas of reservoir.RMRM661748 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7977B. E. Nelson1981611162U.S.A.WyomingWashakieBighorn Basin: Green Bug Reservoir, ca 7.5 air mi SW of Ten Sleep on Blue Bank Road.-107.556943.94771493Disturbed areas.RMRM661746 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8492B. 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.RMRM661745 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8542B. 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.RMRM661744 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8610B. 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.RMRM661743 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9913B. E. Nelson1983626177U.S.A.WyomingParkBighorn Basin: near the head of Spring Creek, ca 6 air mi S of Cody.-109.0480644.436941676In a drying stock pond.RMRM387486 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4006June Haines Georgia Haines1984527148U.S.A.WyomingFremontWind River Basin: east side of Ocean Lake, just N of Ocean Drain.-108.567243.207515951597Sagebrush slope E of lake edge. Phenology: flowering & fruiting.RMRM387487 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4805June Haines Georgia Haines1985713194U.S.A.WyomingNatronaPathfinder Reservoir, ca 23 3/4 air mi ENE of Muddy Gap Junction (Three Forks).-107.022642.511217831814Sandy beach. Phenology: flowering.RMRM387488 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4873June Haines1985718199U.S.A.WyomingFremontWind River Basin: Lake Cameahwait, ca 20 air mi ENE of Riverton, south side of appraoch of Cottonwood Drain to Lake Cameahwait.-108.271343.294314721484Creek bank. Phenology: flowering.RMRM387489 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4936June Haines1985718199U.S.A.WyomingFremontWind River Basin: Lake Cameahwait, ca 21 air mi ENE of Riverton, N of Cottonwood Drain and northwest corner of Lake Cameawait.-108.271343.294314691481Moist alkali soil near creek. Phenology: flowering & fruiting.RMRM387490 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4987June Haines1985722203U.S.A.WyomingFremontWind River Basin: Boysen Reservoir, ca 23.5 air mi NE of Riverton, west end of Cottonwood Bay.-108.251543.352314391451Alkali beach. Phenology: flowering.RMRM387491 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5387June Haines198587219U.S.A.WyomingFremontGranite Mountain Uplift: Sweetwater River, ca 3 air mi NE of Jeffrey City.-107.7890842.5263518991932Greasewood area adjacent to meadow north of river. Phenology: flowering.RMRM387492 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5713June Haines Georgia Haines1985822234U.S.A.WyomingFremontSage Hen Creek, ca 9.5 air mi NE of Jeffrey City.-107.651742.52581890Flood plain of creek. Phenology: flowering.RMRM387493 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7096June 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.-107.632142.511218841890Moist meadow beside river and moist river bank. Phenology: flowering.RMRM661732 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9374Keith H. Dueholm Ronald L. Hartman1980523144U.S.A.WyomingWashakieBighorn Basin: North Butte, ca 10 air mi SW of Ten Sleep.-107.568943.92671646Large shale butte, loose slopes, sagebrush on lower slopes; slopes.RMRM661728 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9647Keith H. Dueholm Ronald L. Hartman1980528149U.S.A.WyomingBig HornBighorn Basin: Ribbon Canyon, at northwest end of Sheep Mountain.-108.1963944.64281341Saltbush flats, shale and sandstone ridges, with barren flats; flats.RMRM661734 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh10993Ronald L. Hartman Keith H. Dueholm1980523144U.S.A.WyomingWashakieBighorn Basin: ca 1.5 air mi W of Ten Sleep.-107.474844.02321371Shaley ridge and eroded slopes with sparsely scattered Juniperus scopulorum.RMRM661733 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh11095Ronald L. Hartman Keith H. Dueholm1980524145U.S.A.WyomingBig HornBighorn Basin: U.S. Hwy 16-20, 5.7 mi S of Basin.-108.040644.32031189Eroded shaley slopes with scattered cottonwoods and irrigation ditch. No elevation listed in field notebook.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh29613Ronald L. Hartman1991630181U.S.A.WyomingFremontOwl Creek/Bridger Mountains: Bridger Mountains: Birdseye Road, ca 11 air mi N of Shoshoni.-108.083343.379215541585Bench and adjacent slopes with sagebrush.RMRM598563 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh25468B. E. Nelson1993527147U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Goshen Hole: Little Red Bill Hill and vicinity, ca 5.5 air mi W of Yoder; ca 15.5 air mi SW of Torrington.-104.406241.912213141339Roadside and barrow pits. Phenology: flowering.RMRM598562 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh25828B. E. Nelson1993615166U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: ridge W of Hemingway Draw along Thirtythree Mile or County Road 110, ca 24.5 mi NW of Casper.-106.574243.149616951707Rolling plains with a mosaic of grassland, sagebrush-grassland, and semi-barren clay knolls, ridges, and slopes. Phenology: flowering.RMRM598555 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh27333B. E. Nelson1993723204U.S.A.WyomingConverse[location and coordinates withheld]1518Cottonwood woodland with Elaeagnus and Shepherdia. Phenology: fruiting.RMRM598554 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh27423B. 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.-104.957542.484714631493Disturbed areas in sandy grassland. Phenology: fruiting.RMRM598561 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh27654B. E. Nelson1993728209U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Beck, North Natrona, or County Road 126, ca 2.7-3.3 air mi N of Natrona; ca 29 air mi NW of Casper.-106.801143.073917191728Roadside and cuts near drainage channel. Phenology: flowering.RMRM598560 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh27697B. E. Nelson1993728209U.S.A.WyomingNatrona[location and coordinates withheld]17221731Bluffs and slopes of gullies. Phenology: fruiting.RMRM598553 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh27858B. 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.-105.082543.052514291445Sand bars and dry stream channel. Phenology: fruiting.RMRM598552 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh28108B. E. Nelson199382214U.S.A.WyomingGoshenSouthern Powder River Basin/Southeastern Plains: Hartville Uplift: Haystack Range: Hell Gap and vicinity on Whalen Canyon or County Road 202, ca 10 air mi NE of Guernsey; ca 14.5 air mi NW of Fort Laramie.-104.641642.398215421597Sandy meadow in ponderosa pine forest. Phenology: fruiting.RMRM598551 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh29047B. 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: fruiting.RMRM598550 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh29063B. E. Nelson1993824236U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Middle Fork Casper Creek on Oil Camp or County Road 210, ca 2 mi W of the north end of Pine Mountain, ca 3 air mi SSE of Powder River; ca 34.5 air mi WNW of Casper.-106.957842.99271756In drying stream channel, low areas, and adjacent banks. Phenology: fruiting.RMRM598549 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh29109B. 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: fruiting.RMRM598548 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh29153B. E. Nelson1993825237U.S.A.WyomingNatrona[location and coordinates withheld]1560Marshy area in the river bottom. Phenology: fruiting.RMRM598547 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh29193B. E. Nelson1993826238U.S.A.WyomingConverse[location and coordinates withheld]1451Parking lot. Phenology: fruiting.RMRM666779 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5497Amy J. Roderick1998624175U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Stone Cabin Creek crossing Poison Spider or County Road 201, ca 38 air mi NW of Alcova townsite.-107.335842.858419321951Gravelly roadside; disturbed. Phenology: flowering & fruiting.RMRM704723 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh33696B. 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.-106.609242.739716431658Flats near the lake with alkali areas. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5967Robert D. Dorn199568159U.S.A.WyomingBig Horn1 mi N of Lucerne.-108.165443.7491310Roadside with Polygonum and Kochia.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6591Robert D. Dorn199591244U.S.A.WyomingSublette10 mi S of Boulder.-109.70542.59992195Roadside with Agropyron and Grindelia.RMRM598546 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38110Ronald L. Hartman1993623174U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Emigrant Gap Ridge, ca 12 air mi W of Casper.-106.557842.853316911701Sandy and shaly areas with ponderosa pine on ridges. Phenology: flowering & fruiting.RMRM598545 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38141Ronald L. Hartman1993623174U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Poison Spider Oil Field, ca 24 air mi W of Casper.-106.775242.861517371798Sandy slopes and flats with sandstone outcrops in uplands with ponderosa pine. Phenology: flowering & fruiting.RMRM598559 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38433Ronald L. Hartman1993624175U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: north end of Pine Mountain.-106.8842.977918902012Ponderosa pine rimmed mesa. Phenology: flowering & fruiting.RMRM598544 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38457Ronald L. Hartman1993626177U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Wyo Hwy 253, ca 9 air mi SE of Casper.-106.14342.76121652Wide right-of-way with road cut and relatively undistrubed grasslands along fence and drainage with cottonwood and willow. Phenology: flowering & fruiting.RMRM598543 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38528Ronald L. Hartman1993626177U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: U.S. Hwy 20, 26, 87, ca 8 air mi E of Casper.-106.170142.850115851600Sandstone outcrops, sandy slopes and grassland. Phenology: flowering & fruiting.RMRM598542 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38745Ronald L. Hartman1993627178U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Wyoming Game and Fish Access on North Platte River, ca 6.5 air mi E of Glenrock.-105.745942.84041500Riverside and sandy parking lot and flats slightly uphill. Phenology: fruiting.RMRM598541 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh38808Ronald L. Hartman1993627178U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: Wyoming Game and Fish Access area along the North Platte River in vicinity of Carey, ca 10 air mi E of Glenrock.-105.668142.85681502River margin and sandy flats and slopes. Phenology: flowering & fruiting.RMRM598536 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39089Ronald L. Hartman1993629180U.S.A.WyomingConverse[location and coordinates withheld]14631493Sandy plains and road cut. Phenology: flowering.RMRM598535 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39332Ronald L. Hartman199371182U.S.A.WyomingConverse[location and coordinates withheld]14631493River margin and banks. Phenology: fruiting.RMRM598558 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39366Ronald L. Hartman199371182U.S.A.WyomingConverse[location and coordinates withheld]14631493River margin and banks. Phenology: flowering.RMRM598534 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh39404Ronald L. Hartman199371182U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: Southeastern Plains: ca 4 air mi SSE of Douglas.-105.353942.700314631493Sandstone outcrop and sandy slope. Phenology: fruiting.RMRM598181 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40119Ronald L. Hartman199374185U.S.A.WyomingConverse[location and coordinates withheld]1432Sandy soil along river and railroad. Phenology: flowering & fruiting.RMRM598180 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40169Ronald L. Hartman T. W. Nelson199376187U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: U.S. Hwy 20, 26, less than 1 air mi E of Fremont County.-107.506743.14831701Alkaline draw with sandy slopes. Phenology: fruiting.RMRM598557 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40452Ronald L. Hartman T. W. Nelson199376187U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: ca 6 air mi NW of Arminto.-107.326743.24921899Sandy-rocky slope and eroded drainage areas. Phenology: fruiting.RMRM298179 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh40471Ronald L. Hartman Thomas W. Nelson199376187U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: ca 10 air mi SW of Waltman along Powder River.-107.349442.94831951Sandy slopes and sandstone outcrop with juniper. Phenology: fruiting.RMRM632410 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh48656Ronald L. Hartman1994729210U.S.A.WyomingSweetwaterGreen River Basin: Eden Reservoir, south side, ca 8.5 air mi NE of Farson.-109.376142.2152042Reservoir margin and edge of canal. Phenology: flowering.RMRM642783 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2667Thomas 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2791Thomas Cramer199484216U.S.A.WyomingLincolnGreen River Basin: south side of Fontenelle Gap, ca 15 air mi W of Fontenelle Reservoir.-110.396942.093121342402Hillside sagebrush and Douglas fir stands. Phenology: flowering.RMRM642782 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2811Thomas 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.RMRM632408 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2894Thomas 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.RMRM632407 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3192Thomas 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3806Thomas 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.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4044Thomas Cramer1994815227U.S.A.WyomingLincolnGreen River Basin: Slate Creek, ca 7 air mi W of Fontenelle.-110.196941.974219962057Alkali creek flats, meadows with assorted Chenopodiaceae, and adjacent semi-barren bluff. Phenology: flowering.RMRM632406 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4251Thomas Cramer Ben and Becky Cramer1994821233U.S.A.WyomingSubletteGreen River Basin: Chimney Butte Reservoir, ca 13 air mi N of La Barge.-110.198342.44112118Drying reservoir and surrounding sagebrush flats. Phenology: flowering.RMRM632405 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4272Thomas 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.RMRM632404 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4391Thomas 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: flowering.RMRM632403 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4420Thomas 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.RMRM632402 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4525Thomas 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: flowering.RMRM632401 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4864Thomas Cramer1994825237U.S.A.WyomingSubletteGreen River Basin: Muddy Creek, ca 8 air mi NNE of Big Piney.-110.055342.60892088Winding creek through Sarcobatus saltflats. Phenology: flowering.RMRM666777 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5617Amy 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.RMRM638198 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7010Thomas Cramer Ronald L. Hartman1995625176U.S.A.WyomingSubletteGreen River Basin: North Alkali Draw, ca 15 air mi E of Big Piney.-109.841942.52662179Sandy draw off of butte with scattered sagebrush. Phenology: flowering.RMRM638197 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7197Thomas Cramer199575186U.S.A.WyomingLincolnGreen River Basin: south end of Slate Creek Ridge, ca 11.5 air mi NNE of Kemmerer.-110.454441.941321642286Wet meadow draw with sagebrush sides and shrub islands. Phenology: flowering.RMRM638196 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7356Thomas Cramer199575186U.S.A.WyomingLincolnGreen River Basin: south end of Fontenelle Reservoir, ca 2 air mi NW of Fontenelle Dam.-110.087342.04551981Reservoir edge sand bars and weedy meadows. Phenology: flowering.RMRM638195 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7441Thomas Cramer199577188U.S.A.WyomingSubletteGreen River Basin: ca 11.5 air mi SW of Boulder.-109.88142.643921952225Sagebrush draw off of mesa top. Phenology: flowering.RMRM638194 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7786Thomas Cramer Jane T. Kellett1995711192U.S.A.WyomingLincolnGreen River Basin: ca 13 air mi N of Opal.-110.261241.95622060Roadside amid sagebrush flats. Phenology: flowering.RMRM638193 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8630Thomas Cramer1995720201U.S.A.WyomingSubletteGreen River Basin: ca 10 air mi SW of Daniel.-110.19242.75982219Creekside meadows with willows. Phenology: flowering.RMRM638192 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9016Thomas Cramer Jane T. Kellett1995722203U.S.A.WyomingSubletteGreen River Basin: Red Canyon, ca 18.5 air mi WNW of Big Piney.-110.40442.672824842500Steep gravel canyonside with sparse sagebrush. Phenology: flowering.RMRM638191 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9157Thomas Cramer Jane T. Kellett1995723204U.S.A.WyomingSubletteGreen River Basin: Water Hole Draw at Big Sandy River, ca 23.5 air mi N of Farson.-109.450942.45322103Clay alkaline sides of draw bottom. Phenology: flowering.RMRM598556 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh25177B. E. Nelson1993524144U.S.A.WyomingWestonSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Lone Tree Creek off the Morrissey Road just W of U.S. Hwy 85, ca 23 air mi S of Newcastle.-104.210643.517511611170Sagebrush-grassland with sparsely vegetated knolls. Phenology: flowering & fruiting.RMRM831409 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh157Brian Elliott1998525145U.S.A.ColoradoHuerfanoWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: junction of County Road 610 and I-25 at Exit 59 on Interstate right of way.-104.8237.71131875Prairie-grassland. Phenology: flowering.RMRM325653 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4699Keith H. Dueholm1978724205U.S.A.WyomingCrook[location and coordinates withheld]1310Sagebrush plains, shallow drainageways, gravel roadside and wet ditch; wet ditch. Phenology: flowering & fruiting.RMRM325663 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5009Keith H. Dueholm1978726207U.S.A.WyomingCrookPowder River Basin: near Little Missouri River, ca 8 air mi NNE of New Haven.-104.8019444.85671128Plains, flats near river, muddy margins of large holding pond; plains, cut near river. Phenology: fruiting.RMRM333516 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7069Keith H. Dueholm1979619170U.S.A.WyomingWeston[location and coordinates withheld]1219Sagebrush plain, clay slopes, draws; plains. Phenology: buds.RMRM333545 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7289Keith H. Dueholm1979623174U.S.A.WyomingWestonPowder River Basin: above Oil Creek, ca 6 air mi SSW of Newcastle.-104.249443.74911189Rolling plain, greasewood flats above creek; flats. Phenology: buds.RMRM372835 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh15848Ronald L. Hartman1983711192U.S.A.WyomingCrookBlack Hills: Belle Fourche River: ca 16 air mi NE of Alva.-104.224444.8725990Shale bluffs, river bottoms, and sagebrush plains above; shale slopes. Phenology: flowering & fruiting.RMRM372834 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh18235Ronald L. Hartman1984715197U.S.A.WyomingCrookPowder River Basin: just E of U.S. Hwy 14 on Old Sundance Road, 4 air mi NE of Moorcroft.-104.9111144.31561280Rolling sagebrush hills and moist drainages; roadside. Phenology: flowering.RMRM192863 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.J.M. Bates1896617169U.S.A.WyomingCrookNewcastle.Phenology: flowering & fruiting.RMRM337375 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh118Andrew Warren198171182U.S.A.WyomingSweetwaterMonument Lake; 11 to 12 air mi N of Wamsutter.2035Growing in clay loam of Playa with Atriplex suckleyi. Phenology: flowering & fruiting.RMRM335147 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh488Ann Aldrich1979719200U.S.A.WyomingSweetwaterNE of Cedar Mountain; ca 34.5 air mi SW of Green River and 10.5 air mi N of McKinnon.2359Shallow loamy soil in a pond edge in a meadow with Polygonum aviculare, Rumex and Hordeum jubatum. Phenology: flowering & fruiting.RMRM10630 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3525Aven Nelson189762153U.S.A.WyomingSweetwaterBitter Creek.-108.552641.55352042Phenology: flowering & fruiting.RMRM3076 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh476Aven Nelson1894714195U.S.A.WyomingParkPlatte River.Phenology: flowering.RMRM29359 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7595Aven Nelson1900716197U.S.A.WyomingAlbanyDunn's Ranch.On loose banks. Phenology: flowering.RMRM302289 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh661Barry Hammel Ronald L. Hartman197794247U.S.A.WyomingCarbon0.8 mi from Elk Mountain/I-80 turnoff along Rattlesnake Road.2225Common in disturbed ground along road with Cleome serrulata. Phenology: flowering & fruiting.RMRM69735 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4623Elam Bartholomew1911824236U.S.A.WyomingAlbanyRock River.Phenology: flowering & fruiting.RMRM32486 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh711Elmer D. Merrill E. N. Wilcox190171182U.S.A.WyomingSweetwaterNear North Pilot Butte.-109.349241.646122862408Dry soi. Phenology: flowering.RMRM268628 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh348Francis X. Jozwik1962824236U.S.A.WyomingNatronaCasper Mountain Area: roadside of Gothmore Loop.1920Phenology: flowering & fruiting.RMRM566245 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5741Neil Snow1989828240U.S.A.WyomingAlbanyCounty Road 37, ca 1.5 mi S of Wyo Hwy 230.2195Roadside with Helenium, Agropyron, Ambrosia and Alopecurus. Phenology: flowering & fruiting.RMRM193976 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh16133Otto Degener Leroy Peiler1942713194U.S.A.WyomingCarbonRawlins.18292134Prairie. Phenology: flowering & fruiting.RMUSFS402313 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh31Philip V. Woodhead1926626177U.S.A.WyomingCarbonRoutt National Forest: 15 mi N of Baggs.2073Level slope; sandy soil; sesert; sagebrush type. Phenology: flowering & fruiting.RMRM391445 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1339Robert J. Hill1973823235U.S.A.WyomingNatronaSplit Rock: near the Split Rock Ranch.1981Growing in dry soil on and around the rocks. Phenology: flowering & fruiting.RMRM391446 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1370Robert J. Hill1973823235U.S.A.WyomingNatronaDevils Gate, Sweetwater River near the Sun Bell Ranch.1829Growing along the river. Phenology: flowering & fruiting.RMRM330907 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh381R. N. Holmes198084217U.S.A.WyomingCarbonRed Desert: Mud Lake.2054Mud flats of lake. Phenology: flowering & fruiting.RMRM530816 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4955Robert D. Dorn1988811224U.S.A.WyomingLaramie3 mi SW of Cheyenne.-104.871941.8381890Disturbed roadside with Sporobolus, Kochia. Phenology: flowering.RMRM299069 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh399Robert L. Tresler19686153U.S.A.WyomingNatrona15 mi NW of Casper.Roadside. Phenology: flowering.RMRM153700 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.Robert L. Lang1936716198U.S.A.WyomingSweetwater6 mi S of Wamsutter.2042Phenology: flowering.RMRM366189 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshRH 233Steve Kilpatrick J. L. Robinson198269160U.S.A.WyomingGoshenWyoming Game and Fish Department's Rawhide unit along the North Platte River, ca 3.3 air mi SE of Lingle, ca 6.8 air mi WNW of Torrington.-104.30642.10071250Gravelly soil in riparian habitat. Phenology: flowering & fruiting.RMRM68492 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.T. A. WilliamsU.S.A.WyomingNiobraraCheyenne River.Phenology: flowering & fruiting.RMRM666778 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5846Amy J. Roderick199876187U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: East Allen Lake, ca 1 air mi W of County Road 1; ca 1.5 air mi S of Medicine Bow townsite.-106.216941.87851981Greasewood-saltbush flats; disturbed. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh76375B. 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.-108.815545.20712621323Bottom of a dry wash. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh84948Ronald L. Hartman Bernadette Kuhn, Laura E. Lukas2007526146U.S.A.ColoradoLas AnimasComanche National Grassland: Plum Creek, 8.5 air mi W of Kim.-103.518537.25911750Rolling grasslands with stockponds. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5043Bernadette Kuhn200869161U.S.A.ColoradoOtero[location and coordinates withheld]1310Dry creek dominated by Tamarix and Iva axillaris. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5274Bernadette Kuhn2008619171U.S.A.ColoradoOteroComanche National Grassland: Timpas Creek, just N of U.S. Hwy 350 and Bloom, ca 13 air mi SW of Timpas.-103.957337.69421451Scattered Populus and Juniperus monosperma; creek with Juncus sp. and Eleocharis sp. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5593Bernadette Kuhn Cali Hemenway2008624176U.S.A.ColoradoLas AnimasComanche National Grassland: ca 1-1.5 air mi W of Kim on County Road 36.-103.382837.24961771Elm grove along road with heavy cover of Convolvulus arvensis. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5612Bernadette Kuhn Cali Hemenway2008624176U.S.A.ColoradoLas Animas[location and coordinates withheld]1667At grove of Eleagnus and Ulmus with overflowing well. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6253Bernadette Kuhn200878190U.S.A.ColoradoOteroComanche National Grassland: ca 4 air mi NNW of Delhi; ca 34 air mi SW of La Junta.-104.048537.69741535At contructed fishing ponds with low water and heavy cover of Tamarix. Phenology: vegetative only.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6300Bernadette Kuhn200879191U.S.A.ColoradoOteroComanche National Grassland: between North and South Fork Jack Canyon, ca 20 air mi SSW of La Junta.-103.645937.70481392Grazed pasture dominated by Buchloë dactyloides. Phenology: vegetative only.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6341Bernadette Kuhn200879191U.S.A.ColoradoOteroComanche National Grassland: ca 3 air mi NW of Bloom; ca 31 air mi SW of La Junta.-103.986237.7121515Base of shale hills, dominated by Juniperus monosperma and Stipa neomexicana. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6421Bernadette Kuhn2008711193U.S.A.ColoradoLas AnimasComanche National Grassland: near Poitrey Creek, ca 4.5 air mi SW of Villegreen; ca 11.5 air mi W of Kim.-103.56437.24881838At stockpond in pasture dominated by Buchloë dactyloides and Opuntia spp. Phenology: fruiting.RMRM900403 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3984Ben Legler Neil Snow200767158U.S.A.New MexicoColfaxVermejo Park Ranch: along banks of Vermejo River immediately downstream from (SE of) I-25.-104.570361136.495416671785Sandy river bottom dominated by recently killed Salix (Tamarix control), with Glycyrrhiza lepidota, Helianthus annuus, Juncus balticus. Scattered along river. Photographed. Phenology: flowering.RMRM900402 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4004Ben Legler Neil Snow200767158U.S.A.New MexicoColfaxVermejo Park Ranch: southwest shore of No. 2 Lake, 7.5 air mi E of Cimarron.-104.780555636.501111111901Man-made lake with marshy shore dominated by grasses, gently grading into dry flats of Opuntia cylindrica, O. phaeacantha and short-grass prairie. Common around base of dead tree in moist soil at west end of dam. Photographed. Phenology: flowering & fruiting.RMRM666776 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6062Amy J. Roderick199877188U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Bates Creek Reservoir, ca 3 air mi E of County Road 402; ca 13.3 air mi N of Shirley Basin townsite.-106.216642.4822225Wet meadows and edges of reservoir dominated by graminoids; Potentilla anserina common; disturbed. Phenology: buds.RMRM900401 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7751Ben Legler2007816228U.S.A.New MexicoColfaxVermejo Park Ranch: southeast shore of French Lake; 1.4 air mi E of Cimarron.-104.890555636.50751944Shallow man-made lake with exposed muddy shoreline sparsely vegetated with with Chenopodium glaucum and Grindelia squarrosa; lake shallows with patches of Alisma gramineum, Ranunculus aquatilis. Frequent in dry mud. Phenology: fruiting.RMRM900400 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7947Ben Legler2008515136U.S.A.New MexicoColfaxVermejo Park Ranch: fields on south side of Ponil Creek 0.35 air mi SE of where U.S. Hwy 64 crosses creek and 1.3 air mi NE of Cimarron.-104.89279236.5170631940Old hay fields; silty soil; with Cardaria chalapensis, Chenopodium spp., grasses. Common on road shoulder; flowers cream-colored. Specimen GPS: 36.511353, -104.891014. Phenology: flowering.RMRM900399 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8164Ben Legler2008527148U.S.A.New MexicoColfaxVermejo Park Ranch: on north side of Dry Arroyo 2.1 air mi NW of French Corners and 0.8 air mi W of I-25.-104.60173836.4793821789Dry watering pond with dry muddy bottom, ringed by Helianthus annuus, Glycyrrhiza lepidota, Astragalus bisulcatus. Flowers pale yellow; common on dam along edge of pond. Specimen GPS: 36.479298, -104.601105. Phenology: flowering.RMUSFS861176 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh13639Brian Elliott2007524144U.S.A.WyomingParkBeartooth Mountains: ca 1/4-3/4 air mi N of Clarks Fork Yellowstone River, ca 26.5 air mi NNW of Cody.-109.297644.869313781585On multicolored clay soil (gray, red, black). Phenology: flowering.RMRM916814 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh363Laura E. Lukas2007612163U.S.A.WyomingAlbanyLaramie Plains: Twin Buttes Lake and Lake Hattie Canal, ca 14 mi W of Laramie; ca 15 mi E of Centennial.-105.852541.24822168In and around canal. Phenology: buds.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh624Amy J. Roderick1977613164U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Rim Lake or BLM Road 3420, ca 7.5 air mi SW of Rawlins.-107.290541.6932195Sandy area surrounding lake. Phenology: flowering.RMRM916816 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8014Laura E. Lukas2008813226U.S.A.WyomingAlbanyLaramie Plains: right-of-way along County Road 424 (Hanson Lane), just W of intersection with County Road 422 (Pahlow Lane) and County Road 44 (Harmony Lane), ca 16 air mi WSW of Laramie; ca 3 air mi N of Harmony.-105.874741.21892157On plains, along road. Phenology: flowering & fruiting.RMRM733606 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh455C. S. Crandall18926153U.S.A.ColoradoLarimerFt. Collins.Halstead's American Weeds #140 Phenology: flowering.RMRM929332 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9032Laura E. Lukas2009617168U.S.A.WyomingCarbonSaratoga Valley: North Platte River E of Savage Meadows, ca 5 air mi SW of I-80 exit 235 (Walcott Junction) and ca 16 air mi NNW of Saratoga.-106.895541.67862010Sandy parking area next to river, meadows and sagebrush hills nearby. Phenology: buds.RMRM929331 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9507Laura E. Lukas2009629180U.S.A.WyomingCarbonHanna Basin: just S of I-80 and along the northeast end of Halleck Ridge, ca 12 air mi WNW of exit 255 (Elk Mountain/Hanna) and ca 1.5 air mi SW of Quealy Gap.-106.559441.7432205Around salt flats in sagebrush. Phenology: flowering.RMRM929330 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9556Laura E. Lukas200971182U.S.A.WyomingCarbonSaratoga Valley: Sand Basin, ca 2 air mi W of Wyo Hwy 130 and ca 6 air mi NNW of Saratoga.-106.844341.58822102Weedy disturbed area where sagebrush has been removed, among sagebrush flats. Phenology: flowering.RMRM824215 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7042Michael Schiebout200571182U.S.A.New MexicoSan MiguelLas Vegas Wildlife Refuge: 4.5 air mi SW of Las Vegas.-105.15888935.5577782002around lake and in ditches. Phenology: flowering & fruiting.RMRM823760 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3318Michael Schiebout2005512132U.S.A.New MexicoHardingKiowa National Grassland: Forest Road K90, 5.5 air mi WSW of Mills.-104.34833336.0705561757Canyon top, rocky ground and around smaller pond. Phenology: fruiting.RMRM666775 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6485Amy 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.RMRM666774 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6629Amy J. Roderick1998718199U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: Blue Gulch N of Wyo Hwy 220, ca 3.2 air mi NW of Alcova townsite.-106.747442.58417071725Draw with sagebrush, rabbitbrush, and wild licorice. Phenology: flowering & fruiting.RMRM268434 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh229Herbert G. Fisser1960712194U.S.A.WyomingFremont1 mi NE of Bonneville.1493In sparse cottonwood stand. Phenology: flowering.RMRM410955 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.T. A. Bell1959615166U.S.A.WyomingFremontSoutheast corner of Game and Fish Department Unit, near Ocean Lake.Dry roadside. Phenology: flowering.RMRM304713 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1061Ronald G. Schreibeis Valerie Schreibeis1977823235U.S.A.WyomingBig Horn8-9 mi W of basin along the Greybull River.Common in riparian zone near reservoir. Phenology: flowering.RMRM348429 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9677Keith H. Dueholm Ronald L. Hartman1980528149U.S.A.WyomingBig HornBig Horn Mountains: John Blue Canyon, ca 4.5 mi NNE of U.S. 14A.14021463Slopes of canyon and roadside. Riparian (along small creek). Phenology: flowering.RMRM318942 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1216David L. Martin197882214U.S.A.WyomingBig HornS of Greybull River, S of Otto.1256Bank of small irrigation ditch. Abundant. Phenology: flowering.RMRM274171 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh451James T. Nichols1962615166U.S.A.WyomingWashakieW of Worland, on the lower part of the 15 mi drainage area.12501310Drainage in Nuttall Saltbrush type vegetation. 5-9 in precipitation zone. Phenology: flowering.RMRM355244 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh860Ellen Collins1983716197U.S.A.WyomingBig HornCrossing of U.S. Alt 14 and Big Horn River.1115Floodplain. Phenology: flowering.RMRM362342 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1340Betsy E. Neely A. Carpenter198374185U.S.A.WyomingLincolnWasatch Formation, E of Fossil Butte National Monument and 2 mi E of the North Fork of Twin Creek.2195Clay soil, dominated by Atriplex gardneri. Phenology: flowering.RMRM325657 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7372Ronald L. Hartman Mary Alice Sanguinetti1978626177U.S.A.WyomingJohnsonCa 0.5 mi N of I-90 at Powder River crossing.1402Bottom land along river and roadside. Phenology: flowering.RMRM325654 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5218Keith H. Dueholm1978729210U.S.A.Eroded slopes, sandy roadcuts. Phenology: vegetative only.RMRM334100 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6535Keith H. Dueholm197965156U.S.A.WyomingJohnsonSouth fork of Powder River, ca 6.5 air mi SE of Kaycee.1432Greasewood flats along river. Phenology: fruiting.RMRM344964 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6363Almut G. Jones1983813225U.S.A.WyomingBig HornNear Lovell.Gravelly soil near salt marsh surrounding lake. Phenology: flowering.RMRM334621 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2278Erwin F. Evert1981731212U.S.A.WyomingParkBuffalo Bill State Park: Absaroka Mountains: north fork of Shoshone River drainage, Rattlesnake Creek along Hwy 14,16, and 20.1646Phenology: flowering.RMRM348431 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3158B. E. Nelson197976187U.S.A.WyomingBig HornBig Horn Mountains: ca 20.5 air mi ESE of Lovell on U.S. 14 alt, ca 22.5 air mi W of Burgess Junction.1920Disturbed areas. Phenology: flowering.RMRM348430 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5479B. E. Nelson1980612164U.S.A.WyomingBig HornBig Horn Mountains: along U.S. alt 14, above Five Springs Creek, ca 20 air mi W of Lovell.1768Rocky juniper-sagebrush slopes. Phenology: fruiting.RMRM333542 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7036Keith H. Dueholm1979618169U.S.A.WyomingNiobraraCa 1.5 air mi E of Redbird.1189Along roadside. Phenology: flowering.RMRM333541 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8807Keith H. Dueholm197989221U.S.A.WyomingConverseNorth Platte River, ca 6.5 air mi E of Glenrock.1493River floodplain, willow thicket, small backwater, sandy terrace above river, sagebrush plains terrace. Phenology: flowering.RMRM333515 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8742Keith H. Dueholm197988220U.S.A.WyomingNatronaCa 5.5 air mi W of Midwest.1524Sagebrush plain, sandstone outcrops and ridge, sandy roadsides. Phenology: buds.RMRM341869 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3066Erwin F. Evert1981710191U.S.A.WyomingParkAbsaroka Mountains: North Fork Shoshone River Drainage: Rattlesnake Creek Road, Forest Road 402, ca 6 mi N of U.S. Hwy 14, 16, and 20.2073Along the road. Phenology: flowering.RMUSFS402314 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.E. A. V. Murphy1939U.S.A.WyomingFremontWashakie National Forest: Diversion Dam.Phenology: flowering.RMRM293514 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh204R. E. Ries D. W. Sabinske1973621172U.S.A.WyomingCampbellBlack Thunder Strip Mining Area: North Prong of Thunder and Little Thunder creeks.-105.290643.69911417Dry lake bottom with western wheatgrass and foxtail barley; clayey overflow. Phenology: flowering.RMRM354496 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2186June Haines1983825237U.S.A.WyomingFremontGas Hills.1922Growing in the wall of a drainage ditch below plot. Plot 6. Phenology: buds.RMRM354495 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2166June Haines198385217U.S.A.WyomingFremontGas Hills, section 3, plot (25, 83).1902In a drainage. West of plot 25, 83. Phenology: flowering & fruiting.RMRM96214 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.Mrs. Joseph Clemens1911815227U.S.A.WyomingUintaPhenology: flowering.RMRM391817 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh631Robert J. Hill197371182U.S.A.WyomingNatronaDevils Gate, along the Sweetwater River near the Sun Bell Ranch.Along roadside. Common. Phenology: flowering.RMRM131433 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh11767County Agent1931910253U.S.A.WyomingParkDitch banks. Phenology: flowering.RMRM598181 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh29193B. E. Nelson1993826238U.S.A.WyomingConverseSouthern Powder River Basin/Southeastern Plains: along the North Platte River on Wyo Hwy 94, ca 0.8 mi S of Bed Tick Creek, ca 4.5 air mi S of Douglass.1451Parking lot. Phenology: flowering.RMRM608003 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4692Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Hams Fork, ca 2.5 air mi S of Kemmerer.2088Riverside meadows, willows, and sagebrush. Phenology: fruiting.RMRM608004 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4658Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: ca 2 air mi E of Leefe.1914Ditchsides and dry reservoir in surrounding sagebrush. Phenology: flowering.RMRM608005 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4576Thomas Cramer Ronald L. Hartman1994823235U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Twin Creek, ca 3.5 air mi W of Nugget.1951Creek edges in 10 ft deep creek cut through sagebrush surroundings. Phenology: fruiting.RMRM608006 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3806Thomas Cramer1994814226U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Lake Viva Naughton, ca 13 air mi NNW of Kemmerer.2210Reservoir edge, meadows, and sagebrush. Phenology: fruiting.RMRM600424 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6591Robert D. Dorn199591244U.S.A.WyomingSublette10 mi S of Boulder.2195Roadside with Agropyron and Grindelia. Phenology: flowering.RMRM601010 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5967Robert D. Dorn199568159U.S.A.WyomingHot Springs1 mi N of Lucerne.1310Roadside with Polygonum and Kochia. Phenology: buds.RMRM396747 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4620Robert D. Dorn198769160U.S.A.WyomingLincolnCa 12 mi S of Kemmerer.2042Disturbed area with Lepidium and Malcolmia. Phenology: fruiting.RMRM544493 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh229Windsor Copley1989821233U.S.A.WyomingUintaMountain View.2073Disturbed meadow with dry, loamy, slightly alkaline soil. Phenology: flowering.RMRM646165 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4044Thomas Cramer1994815227U.S.A.WyomingLincolnGreen River Basin: Slate Creek, ca 7 air mi W of Fontenelle.19962057Alkali creek flats, meadows with assorted Chenopodiaceae, and adjacent semi-barren bluff. Phenology: flowering & fruiting.RMRM645546 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh36526B. E. Nelson C. H. Refsdal199578189U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Snow Hollow, ca 1.5 air mi E of Idaho, ca 5.5 air mi SW of Cokeville, ca 29 air mi NW of Kemmerer.20732103Heavily grazed meadow in the canyon bottom. Phenology: flowering & fruiting.RMRM645547 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh10018Thomas Cramer Jane T. Kellett1995730211U.S.A.WyomingLincolnSouthern Salt River Range and Vicinity: Underwood Canyon, ca 8 air mi SE of Cokeville.21952256Creekside willows and meadows with sagebrush edges. Phenology: flowering.RMRM831203 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh10484Brian Elliott Elizabeth Mark199985217U.S.A.ColoradoCusterWet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Reed Gulch, ca 9 air mi NW of Westcliffe, at the junction of Colo Hwy 69 and County Road 203.-105.566438.23942323Roadside. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh79515B. E. Nelson Joseph L. M. Charboneau201068159U.S.A.MontanaValleyOn Little Beaver Road just inside BLM boundary, ca 1 air mi NE of January Reservoir, ca 8.5 air mi SW of Glasgow.-106.745648.0947701736Rolling grassland-forbs on clay soil with gullies and drainages. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh79774B. E. Nelson Joseph L. M. Charboneau2010610161U.S.A.MontanaValleyOff of Theony Road at Lighthouse Hill BM and vicinity above Chambers and First coulees, ca 19 air mi W of Opheim.-106.817148.8816792839Clay slope with bentonite areas. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh80079B. E. Nelson Joseph L. M. Charboneau2010613164U.S.A.MontanaValleyOn ridge between Lena Coulee and Cut Throat Coulee on the Timber Creek Trail, ca 41 air mi SW of Glasgow.-107.311447.7659740798Clay and bentonite badlands with ponderosa pine. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh81381B. E. Nelson2010919262U.S.A.MontanaValleyAt the head of South Fork Duck Creek below Glen Reservoir off The Pines Road, ca 15 air mi WSW of Fort Peck; ca 21 air mi S of Glasgow.-106.728347.9149740746In the reservoir and adjacent mud flats. Phenology: vegetative only.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh25Joseph L. M. Charboneau2010615166U.S.A.MontanaValleyOn The Pines Road at intersection with Ridge Road, ca 2 air mi SE of Pines Reservoir, ca 15.5 air mi WSW of Fort Peck.-106.727447.9262728759Rolling grasslands on badlands clay soil with drainages with occasional junipers. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh387Joseph L. M. Charboneau2010624175U.S.A.MontanaValleyOn Triple Crossing Road, ca 1/4 air mi N of Whitetail Reservoir, ca 28 air mi SW of Glasgow.-107.115447.9598753759Grasslands with occasional sagebrush on clay soil. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh419Joseph L. M. Charboneau2010624175U.S.A.MontanaValleyOn Ridge Road, on ridge above Tony Coulee, ca 2.5 air mi SW of Finn Reservoir, ca 36 air mi SW of Glasgow.-107.25947.91868954Sandy roadside. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh628Joseph L. M. Charboneau2010627178U.S.A.MontanaPhillipsMatador Ranch: on Dry Fork Road, on top of Dry Fork Ridge, ca 2.5 air mi N of Wrangler Reservoir, ca 16.5 air mi ESE of Zortman.-108.204747.8103896926Badland clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh669Joseph L. M. Charboneau2010627178U.S.A.MontanaPhillipsOff of Regina Road, on ridge overlooking Flat Creek and The Big Sag, ca 4 air mi SSW of Whitcomb Lake, ca 30 air mi S of Malta.-107.865347.9343771795Sagebrush-grasslands on stony clay soil with hills and swales. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh746Joseph L. M. Charboneau2010630181U.S.A.MontanaPhillipsOn North Frenchman Road, on ridge above Steelman Coulee, ca 8.5 air mi NE of Gray Reservoir, ca 37.5 air mi N of Saco; ca 51 air mi NNE of Malta.-107.350148.9904804865Clay soil. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1223Joseph L. M. Charboneau201078189U.S.A.MontanaValleyE of Rock Creek Trail in hills W of Deep Creek, ca 1 air mi SE of Antelope Pass, ca 26 air mi NNE of Hinsdale; ca 42 air mi NNW of Glasgow.-106.925348.7472768783Clay trailside. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1427Joseph L. M. Charboneau2010710191U.S.A.MontanaPhillipsW of U.S. Hwy 191 in Black Coulee, ca 1 air mi NE of West Alkali Reservoir, ca 14.5 air mi SW of Malta.-108.068748.2152756771Badlands clay. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1472Joseph 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.-108.786947.7589853932Wooded steep hillsides on clay soil. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1573Joseph L. M. Charboneau2010713194U.S.A.MontanaValleyE of Ridge Road around Craig Reservoir, ca 2.5 air mi W of Clover Reservoir, ca 32 air mi WSW of Glasgow.-107.267748.0209792807Saline clay/reservoir edge. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1608Joseph L. M. Charboneau2010713194U.S.A.MontanaValleyE of Skyview Ridge Road, ca 2.5 air mi E of Horace Reservoir, ca 21.5 air mi NNW of Glasgow.-107.088548.2198740759Hard badlands clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1814Joseph L. M. Charboneau2010717198U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: E of CK Ridge Road just S of Refuge Road, ca 5.5 air mi S of Wrangler Reservoir, ca 23 air mi SE of Zortman; ca 49 air mi SSW of Malta.-108.201947.6967817862Sagebrush-grasslands on clay soil with occasional open ponderosa pine woodlands. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1890Joseph L. M. Charboneau2010718199U.S.A.MontanaPhillipsWapati Reservoir, S of BLM Road 1143, ca 3.5 air mi W of Indian Lake, ca 43 air mi S of Malta.-107.910447.7462817829Sagebrush-grasslands on stony clay soil. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1934Joseph L. M. Charboneau2010718199U.S.A.MontanaPhillipsE of Regina Road adjacent to Nelson Reservoir, ca 2.5 air mi SSE of Button Butte, ca 22 air mi S of Malta.-107.880848.0543734743Sagebrush-grassland hills with clay soil. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2233Joseph 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.-108.879647.7953768878Semi-barren clay slopes. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2309Joseph L. M. Charboneau2010727208U.S.A.MontanaValleyBull Pasture Coulee and above, E of Windy Ridge Road, ca 1.5 air mi NE of Erie Reservoir, ca 17 air mi N of Hinsdale; ca 36.5 air mi NNW of Glasgow.-107.055548.6347768817Clay to sandy semi-barren hillsides. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2410Joseph L. M. Charboneau2010727208U.S.A.MontanaValleyBitter Creek Wilderness Study Area: along Chisholm Creek, ca 8 air mi NNW of Newberry Flat Reservoir, ca 36 air mi NNE of Glasgow.-106.814948.6941774792Sagebrush-grasslands on clay flats with greasewood. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2455Joseph 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.-106.562248.5247832835Semi-barren clay patches. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2772Joseph 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.-107.378347.7863765878Dry clay above creek bottom. Phenology: fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3290Joseph L. M. Charboneau2010812224U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: Carpenter Coulee, S of Harper Ridge Road, ca 9 air mi SSW of Halfpint Reservoir, ca 41.5 air mi SW of Glasgow.-107.167747.7474786844Disturbed clay areas. Phenology: fruiting.RMRM355625 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5992Robert W. Lichvar1983610161U.S.A.MontanaCarbonNorth Fork of Trail Creek.-108.203945.10841204Cottonwood bottom. Phenology: vegetative only.RMRM252734 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh56984W. E. Booth1956620172U.S.A.MontanaDeer LodgeCa 10 mi NW of Anaconda.-112.807646.2382In dry bunchgrass, grassland. Phenology: vegetative only.RMRM121969 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.J. W. Blankinship1903825237U.S.A.MontanaPhillipsMalta: Lake Bowdoin.Phenology: vegetative only.RMRM89476 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.J. W. Blankinship19068213U.S.A.MontanaCascadeGreat Falls.Phenology: vegetative only.RMRM117361 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh51Esther L. Larsen1927621172U.S.A.MontanaSheridanWestby.Phenology: vegetative only.RMRM300471 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4526Marvin L. Roberts1976515136U.S.A.MontanaBig Horn10 mi NW of Hardin, 11 mi E of Yellowstone County line on I-90.On sagebrush covered hillside. Uncommon. Phenology: vegetative only.RMUSFS480177 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshW-63E. J. Woolfolk193777188U.S.A.MontanaCusterNorthern Rocky Mountain Experimental Station: Fossil Spring Pasture J.792On draws and pastures, in rocky soil. Few. Phenology: vegetative only.RMUSFS480175 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshJES-112Jack E. Schmautz1953723204U.S.A.MontanaMadisonBeaverhead National Forest.1920On roadside, in gravelly clay soil. Common. Phenology: vegetative only.RMUSFS480174 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1723James C. Whitham G. Kirby Whitham193469160U.S.A.MontanaGallatinGallatin National Forest: Roadside 10, 4 mi W of Logan.1402On open roadside, in alkaline soil. Common. Phenology: vegetative only.RMRM73231 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.Wyatt W. Jones1902725206U.S.A.MontanaGallatinBozeman.Phenology: vegetative only.RMRM532578 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh582Herb L. Karcher198865157U.S.A.NebraskaScotts BluffBridgeport, HW L79E, miniature cutoff, N of river channel bridge.Roadside, both sides of HW. Abundant within isolated population; flowers axillary, green-yellow, Rhixomatous root. Phenology: flowering.RMRM604190 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.Neil Hotchkiss1942619170U.S.A.North DakotaWardDes Lacs National Wildlife Refuge: west side of Upper Des Lacs Lake, 6 mi N of Kenmare.On coal mine waste and by roadside. Phenology: flowering.RMRM105574 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh751Lycurgus R. Moyer1915822234U.S.A.North DakotaLittle Missouri Valley: Marmarth.Clay cliffs, bad lands. Phenology: flowering.RMRM44712 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh370H. L. Bolley189289222U.S.A.North DakotaBottineau.Phenology: vegetative only.RMRM154009 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPurshs.n.O. A. Stevens1934630181U.S.A.North DakotaBarnesValley City.Bare hillside. Phenology: flowering.RMRM840807 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh517Bethany Lewis2007728209U.S.A.WyomingAlbanyLaramie Plains: Mortenson Lake National Wildlife Refuge: ca 11 air miles SW of Laramie.-105.79291741.2135172207Greasewood/grassland uplands. Phenology: buds.RMRM666773 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7011Amy J. Roderick1998720201U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Pathfinder Reservoir: North Platte River E of BLM Road 3108, ca 4.2 air mi N of Kortes Dam.-106.890242.23851786Greasewood flats at rivers edge; disturbed. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh81644B. E. Nelson2011617168U.S.A.MontanaPhillipsAlong Black Coulee Road near the head of Coburg Coulee, ca 20 air mi N of Dodson; ca 29 air mi NW of Malta.-108.265348.6889878926Clay flats with Atriplex. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh81670B. E. Nelson2011618169U.S.A.MontanaPhillipsUpper Missouri River Breaks National Monument: along Bull Creek Road just W of the boundary, ca 3.5 air mi WNW of DY Junction, ca 54 air mi SW of Malta.-108.703947.8122975987Sagebrush-grassland on dark clay soil. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh81713B. E. Nelson2011620171U.S.A.MontanaValleyAlong Roosevelt Trail ca 0.5 mi E of Porcupine Creek and Fort Peck Indian Reservation, ca 5 air mi N of Nashua.-106.393848.205661676Rolling terrain below and slope of rim with meadows, bare areas, drainage channels, with clay soil, and cobblestone covered areas. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh81945B. E. Nelson2011622173U.S.A.MontanaValleyAlong Willow Creek Road S of Archambeault Flats, ca 13 air mi W of Fort Peck; ca 15 air mi S of Glasgow.-106.721247.99664689Grassy and weedy clay flats. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh81988B. E. Nelson2011622173U.S.A.MontanaValleyAlong Willow Creek Road above and E of Barber Coulee, ca 36 air mi SW of Glasgow.-107.11647.8133768829Clay "bald". Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh82088B. E. Nelson2011624175U.S.A.MontanaPhillipsAlong Stage Road (Mont Hwy 204) ca 1/2-3/4 mi N of Wild Horse Creek, ca 16 air mi S of Dodson; ca 23 air mi SW of Malta.-108.268548.1693786804Badlands with gravel to cobblestone size rocks, with drainage channels, bentonite boils, grassy patches, and grassland on the flats above. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh82223B. E. Nelson2011624175U.S.A.MontanaPhillipsLarb Hills (North): above and S of Old U.S. Hwy 2 and BNSF tracks, ca 5.5 air mi W of Saco; ca air mi ENE of Malta.-107.469348.457701774Rough breaks with clay slopes, swales, and drainage channels. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh82327B. E. Nelson2011626177U.S.A.MontanaValleyAlong Rock Creek Road at the south edge of Rock Creek Flats, ca 5 air mi S of Thoeny; ca 24 air mi W of Opheim.-106.919948.8011750768Open lower clay slopes and outwash areas. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4339Joseph L. M. Charboneau201161152U.S.A.MontanaValleyE of Anderson Road, E of Timber Creek, ca 12 air mi WSW of Triple Crossing Reservoir, ca 44.5 air mi WSW of Fort Peck; ca 40 air mi WSW of Glasgow.-107.364147.914771774Badlands clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4410Joseph L. M. Charboneau201164155U.S.A.MontanaPhillipsAssiniboine Creek and ridge to the NE, ca 2.5 air mi W of the Milk River, ca 8 air mi NNE of Malta.-107.848848.4619710774Badlands clay. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4483Joseph L. M. Charboneau201164155U.S.A.MontanaPhillipsSpring Coulee, W of U.S. Hwy 191, ca 1.5 air mi W of the Milk River, ca 10.5 air mi NNE of Malta.-107.764948.496692762Badlands clay. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4536Joseph L. M. Charboneau201166157U.S.A.MontanaPhillipsE of Content Road, E of Sun Prairie Flats, ca 5 air mi WSW of Buckley Lake, ca 42 air mi E of Zortman; ca 33 air mi SSE of Malta.-107.641147.9215728768Badlands clay. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4577Joseph L. M. Charboneau201166157U.S.A.MontanaPhillipsE of Content Road, ca 2 air mi SW of Tallow Creek, ca 44 air mi E of Zortman; ca 30 air mi SSE of Malta.-107.604847.9681719746Badlands clay. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4728Joseph L. M. Charboneau201168159U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: Fifth Ridge and Sixth Coulee S of The Pines Road (Refuge Road 102) ca 2 air mi SSW of Berger Reservoir, ca 24 air mi SW of Fort Peck; ca 24.5 air mi SSW of Glasgow.-106.6947.8589731807Barren silty areas. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4845Joseph L. M. Charboneau2011612163U.S.A.MontanaPhillipsN of Mont Hwy 208, hills between Lush Coulee and Martins Coulee, ca 3 air mi SW of Austin Lake, ca 6.5 air mi SSW of Whitewater; ca 24.5 air mi NNE of Malta.-107.70648.6831768804Grasslands with scattered silver sagebrush on clay soil. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5085Joseph L. M. Charboneau2011614165U.S.A.MontanaPhillipsHills W of Camp Creek, N of Dry Fork Road, ca 2.5 air mi NNE of Big Sage Reservoir, ca 9 air mi SE of Zortman; ca 48 air mi SSW of Malta.-108.438947.8077939981Clay hardpan. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5395Joseph L. M. Charboneau2011619170U.S.A.MontanaPhillipsRidge W of Frenchman Creek, N of Frenchman Road, ca 1/4 air mi SW of Frenchman Reservoir, ca 22.5 air mi NNW of Hinsdale; ca 45 air mi NW of Glasgow.-107.207948.7035731762Silty-sandy badlands hillslopes. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5505Joseph L. M. Charboneau Alice Sawyer2011621172U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: Sixth Ridge, ca 9 air mi SSE of Pines Reservoir, ca 25 air mi SW of Fort Peck; ca 26.5 air mi S of Glasgow.-106.660747.8296621731On badlands clay. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5529Joseph L. M. Charboneau2011621172U.S.A.MontanaValleyNE of Lone Tree Creek and Triple Crossing Access Road, ca 6 air mi E of Skull Reservoir, ca 21 air mi WSW of Fort Peck; ca 22 air mi SW of Glasgow.-106.869647.9355692719Big-sagebrush steppe on thick clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5633Joseph L. M. Charboneau2011623174U.S.A.MontanaPhillipsAmerican Prairie Reserve: Dry Fork Ridge, S of West Fork Dry Fork Creek, ca 3.5 air mi ENE Wrangler Reservoir, ca 29 air mi ESE of Zortman; ca 43 air mi SSW of Malta.-108.134447.7879850884Thick clay and silty hardpans. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5690Joseph L. M. Charboneau2011623174U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: hills N of outlet of Fourchette Creek into Fourchette Bay, E of Refuge Road 858, ca 3 air mi NNE of Fowler Reservoir, ca 39 air mi ESE of Zortman; ca 47 air mi SSE of Malta.-107.76647.7035704740Big-sagebrush steppe with greasewood on heavy clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5714Joseph L. M. Charboneau Mark Majerus, Michael Dolan, Noorjahan Parwana, Katie Butts, and Mary Frieze2011624175U.S.A.MontanaPhillipsAmerican Prairie Reserve: Box Elder Creek and hills above, ca 4 air mi E of Indian Lake, ca 38.5 air mi ESE of Zortman; ca 44 air mi SSE of Malta.-107.767447.735704728Big-sagebrush steppe with greasewood on clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5906Joseph L. M. Charboneau2011625176U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: Reynolds Hill, ca 2 air mi N of Fourchette Creek Recreation Area, ca 44 air mi ESE of Zortman; ca 38 air mi SSE of Malta.-107.653647.69743841Sagebrush-greasewood steppe on silty clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6123Joseph L. M. Charboneau2011628179U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: CK Ridge, W of Refuge Road 206, ca 10 air mi ESE of Taint Reservoir, ca 24 air mi SE of Zortman; ca 52 air mi SSW of Malta.-108.191447.6616804884Sagebrush-grasslands on stony clay soil with disturbed areas. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6158Joseph L. M. Charboneau2011628179U.S.A.MontanaPhillipsRidge E of Spring Creek, W of CK Ridge Road, ca 2.5 air mi E of Blizzard Reservoir, ca 18 air mi SE of Zortman; ca 48 air mi SSW of Malta.-108.276147.7335865905Sagebrush-grasslands on rolling hills of clay to loamy soil with swales and areas of stony silty hardpans. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6404Joseph L. M. Charboneau2011630181U.S.A.MontanaPhillipsLarb Hills (North): E of Lower Harb Road, ca 1.5 air mi E of Beaver Creek, ca 15 air mi SW of Saco; ca 15.5 air mi ESE of Malta.-107.559148.3039710762Badlands clay slopes. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6278Joseph L. M. Charboneau2011630181U.S.A.MontanaValleyLarb Hills (North): S of Beaver Creek, ca 4.5 air mi NNW of Ashford Spring, ca 6.5 air mi WNW of Hinsdale; ca 31.5 air mi NW of Glasgow.-107.222648.4098673722Big sagebrush steppe with greasewood on silty clay. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6634Joseph L. M. Charboneau201173184U.S.A.MontanaValleyUhlan Coulee, ca 2.5 air mi W of Porcupine Creek, ca 23 air mi N of Fort Peck; ca 12 air mi NE of Glasgow.-106.450448.3321777823Badlands clay slopes. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6889Joseph L. M. Charboneau201175186U.S.A.MontanaPhillipsCottonwood Creek at confluence with Black Coulee, ca 9.5 air mi SW of Horseshoe Lake, ca 15 air mi WSW of Loring; ca 30.5 air mi NNW of Malta.-108.190348.7393801823Saltbush and greasewood on silty flats with alkaline seeps and badlands clay slopes. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6916Joseph L. M. Charboneau201177188U.S.A.MontanaValleyLittle Beaver Creek, S of Grub Detention Reservoir, ca 7.5 air mi W of Last Reservoir, ca 23 air mi WNW of Fort Peck; ca 17.5 air mi SW of Glasgow.-106.915648.0378682685Big sagebrush steppe with greasewood and saltbush on silty and clay flats. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6947Joseph L. M. Charboneau201177188U.S.A.MontanaValleySage Hen Creek and ridge to the S, along Beaver Branch Road (Little Beaver Road), ca 3 air mi W of January Reservoir, ca 19 air mi WNW of Fort Peck; ca 13 air mi SW of Glasgow.-106.827148.0782689719Loose shale hillsides with creeping juniper. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7029Joseph L. M. Charboneau201177188U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: N of Refuge Road 108, ca 6.5 air mi ENE of Willow Flat Reservoir, ca 6 air mi WSW of Fort Peck; ca 15 air mi SSE of Glasgow.-106.559747.9998689722Big sagebrush steppe on badlands clay hills with large patches of yellow sweetclover. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7254Joseph L. M. Charboneau201179190U.S.A.MontanaValleyBitter Creek Wilderness Study Area: ridge S of Cow Coulee, ca 7.5 air mi SSW of Last Chance Reservoir, ca 21 air mi WSW of Opheim; ca 41 air mi NNW of Glasgow.-106.830548.7652792804Shalely and clayey slopes with creeping juniper. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7339Joseph 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.-108.270648.2154789792Grasslands on loamy soil with occasional silver sagebrush, alkaline areas, and large patches of crested wheatgrass, yellow sweetclover, and alfalfa. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7369Joseph L. M. Charboneau2011711192U.S.A.MontanaPhillipsAmerican Prairie Reserve: North Fork White Rock Coulee, ca 4.5 air mi ESE of Little Warm Reservoir, ca 24.5 air mi ENE of Zortman; ca 24 air mi SSW of Malta.-108.049848.0479792804Grassland hills with big sagebrush on clay to loamy soil. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7588Joseph L. M. Charboneau2011714195U.S.A.MontanaValleySeventh Ridge, ca 4.5 air mi NE of Graveyard Hill, ca 22 air mi SW of Fort Peck; ca 27 air mi SSW of Glasgow.-106.820347.8326743829Areas reseeded with crested wheatgrass and yellow sweetclover. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7638Joseph L. M. Charboneau2011714195U.S.A.MontanaValleyCharles M. Russell National Wildlife Refuge: Middle Eighth Ridge, ca 2.5 air mi ENE of Graveyard Hill, ca 24 air mi SW of Fort Peck; ca 30 air mi SSW of Glasgow.-106.819947.7911731804Ponderosa pine woodland with juniper understory. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7847Joseph 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 & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7983Joseph L. M. Charboneau2011719200U.S.A.MontanaPhillipsSand Hills: ca 3.5 air mi SSE of Silver Peak, ca 5.5 air mi SSW of Zortman; ca 49 air mi SW of Malta.-108.565747.843610121048Sandstone ridge with occasional ponderosa pine, juniper, and big sagebrush. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8070Joseph L. M. Charboneau2011721202U.S.A.MontanaPhillipsCharles M. Russell National Wildlife Refuge: Mickey Butte, ca 4 air mi ENE of Dry Lake, ca 43 air mi ESE of Zortman; ca 54.5 air mi S of Malta.-107.786247.5891807884Big sagebrush-grasslands on clay hills. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8103Joseph L. M. Charboneau2011721202U.S.A.MontanaPhillipsUL Bend National Wildlife Refuge: Dry Lake along Refuge Road 897, ca 6 air mi SSE of Fish Fossil Reservoir, ca 40 air mi SE of Zortman; ca 56 air mi S of Malta.-107.865747.5697719731Dry, silty lake bed. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8348Joseph 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.-108.408948.6947887905Grassland hills with scattered silver sagebrush on stony loamy soil. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8476Joseph 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.-107.735248.3844682689Alkaline flats. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8484Joseph L. M. Charboneau2011731212U.S.A.MontanaPhillipsHewitt Lake National Wildlife Refuge: W of Hewitt Lake, ca 4 air mi S of the Milk River, ca 8 air mi ESE of Fanny Hill, ca 17 air mi NE of Malta.-107.611648.5365673698Reservoir edge. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8538Joseph L. M. Charboneau201182214U.S.A.MontanaValleyNorth Fork Sutherland Creek, along Murray Road, ca 2.5 air mi SSW of Murray Hill, ca 34 air mi WSW of Fort Peck; ca 36 air mi SW of Glasgow.-107.066447.7787713725Big sagebrush steppe with greasewood on clay hills. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8681Joseph L. M. Charboneau201182214U.S.A.MontanaValleyCorral Reservoir and Timber Creek, S of Triple Crossing Access Road, ca 9.5 air mi WNW of Halfpint Reservoir, ca 41 air mi W of Fort Peck; ca 36 air mi WSW of Glasgow.-107.309947.9436804807Grasslands with greasewood and big sagebrush on clay to stony loamy soil. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8713Joseph L. M. Charboneau201182214U.S.A.MontanaValleyBlanche Coulee near its confluence with Larb Creek, ca 4 air mi WNW of Trailerhouse Reservoir, ca 19 air mi SW of Hinsdale; ca 30.5 air mi W of Glasgow.-107.287448.1584713716Grasslands with big sagebrush and greasewood. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8832Joseph L. M. Charboneau201184216U.S.A.MontanaValleyUpper reaches of Chisholm Creek, ca 4.5 air mi SSW of Pikes Peak, ca 13.5 air mi SW of Opheim; ca 38 air mi N of Glasgow.-106.643748.7287862878Grasslands with scattered silver sagebrush on clay soil. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8914Joseph L. M. Charboneau201184216U.S.A.MontanaValleyWillow Creek near its confluence with Eagles Nest Coulee and ridge to the W, ca 7.5 air mi WNW of Newberry Flat Reservoir, ca 15 air mi NNE of Hinsdale; ca 32 air mi NW of Glasgow.-106.970248.5868682701Steep sandy slope. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9378Joseph 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.-107.650948.406676679Drying alkaline areas at edge of lake. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh9477Joseph 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8282Lori E. Brummer201262154U.S.A.ColoradoMontroseUncompahgre Plateau: Dry Creek SE of Transfer Road, ca 10.5 air mi ENE of Montrose.-108.0649638.533961725Salt desert shrub community. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh11520Lori E. Brummer2012829242U.S.A.ColoradoOuraySan Juan Mountains: Uncompahgre National Forest: Uncompahgre Gorge; along U.S. Hwy 550 just NE of Climax Creek, ca 2.5 air mi SE of Ouray.-107.649337.98892701Along cliff base, steep montane canyon. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2438Joshua J. Irwin Craig Scott2010719200U.S.A.IdahoCusterEast Fork Salmon Mountains: Spar Canyon at the confluence with the East Fork Salmon River, 6.5 air mi ESE of Clayton.-114.2792344.2221703Sandy or gravelly soil in xeric dry wash vegetation; 4° slope, SSW aspect; alluvial geology. 26-75 individuals apparent. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6627Joshua 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 mesic soil within herbaceous riparian vegetation, no slope, alluvial geology. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6746Joshua J. Irwin2011723204U.S.AIdahoCusterSalmon River: mouth of first unnamed gulch S of Malm Gulch along Ida Hwy 75, 11.0 air mi N of Challis.-114.2645944.348391603>150 plants estimated in xeric soil within roadside vegetation, no slope, alluvial geology. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8188Joshua J. Irwin2011820232U.S.AIdahoCusterTarghee National Forest: Lemhi Range: North Fork Eightmile Canyon, 32.0 air mi ENE of Mackay.-113.004344.06323232325-75 plants estimated in xeric soil within roadside vegetation, 6 degree slope, ENE aspect, limestone geology. 25-75 plants estimated. Phenology: flowering & fruiting.RMRM664131 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2057C. H. Refsdal1994725206U.S.A.WyomingSweetwater[location and coordinates withheld]2262Roadside, flats, and farmlands; gravelly clay soils. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6789Emma E. Freeland2013715196U.S.A.MontanaBeaverheadBlacktail Valley: along Blacktail Road, ca 11 air mi SSE of Dillon, ca 3 air mi N of Ashbough Peak.-112.583845.06681704Roadside. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7471Emma E. Freeland2013727208U.S.A.MontanaBeaverheadBeaverhead River, ca 1 air mi W of Dillon at Cornell Park.-112.65945.21511557Disturbed ground in a city park along a river. Phenology: flowering.RMRM664159 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2163C. H. Refsdal1994727208U.S.A.WyomingSweetwater[location and coordinates withheld]1873Shoreline and uplands of river; alternating sand and clay sediments. Phenology: flowering & fruiting.RMRM664228 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2180C. H. Refsdal1994727208U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: Linwood Canyon, ca 3 air mi NE of Manila, UT; junction of Henrys Fork and Wyo Hwy 530.-109.666141.00231920Creek drainage in arid desert. Phenology: flowering & fruiting.RMRM666772 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7549Amy J. Roderick199881213U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Freezeout Mountains: Petes Gap, ca 6 air mi W of Wyo Hwy 487; ca 10.8 air mi NW of Medicine Bow.-106.294542.0242057Creek banks and adjacent flatland of birdfoot sage and shadscale. Phenology: fruiting.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2385C. 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.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2486C. 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1573Lori E. Brummer201084216U.S.A.ColoradoMontroseUncompahgre Plateau: mesa area W of Linscott Canyon, ca 10 air mi SW of Montrose.-108.017538.39122502256Pinyon/juniper on sandstone mesa. Phenology: flowering & fruiting.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh1976Lori E. Brummer2010813225U.S.A.ColoradoMontroseUncompaghre Plateau: 25 Mesa: Monitor Creek, ca 20.5 air mi SW of Delta.-108.317538.530521342256Meadow area in pinyon/juniper. Phenology: flowering.RMRM664164 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2673C. H. Refsdal199489221U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: Seedskadee National Wildlife Refuge: ca 27 air mi NW of Green River; 0.8 mi NE of Refuge Headquarters.-109.858141.91431926Dry meadow, prairie, sandy. Phenology: flowering.RMRM664163 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2721C. H. Refsdal199489221U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: Seedskadee National Wildlife Refuge: ca 26 air mi NW of Green River; 2.3 mi S of Refuge Headquarters on through waterfowl viewing gate on north side of river.-109.814841.892619111916Upland, gravelly semi-barren sagebrush slopes. Phenology: vegetative only.RMRM666771 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7605Amy 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 & fruiting.RMRM664162 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2815C. H. Refsdal1994814226U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: ca 1 air mi W of Green River; 0.6 mi W of junction of Wyo Hwy 374 and East Flaming Gorge Road.-109.487941.54291853River bottom, river rock, clays, willows, grasses. Phenology: flowering & fruiting.RMRM664161 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2831C. H. Refsdal1994815227U.S.A.WyomingUinta[location and coordinates withheld]1981Upland, semi-barren sagebrush slopes. Phenology: flowering & fruiting.RMRM689967 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2896C. H. Refsdal199493246U.S.A.WyomingSweetwater[location and coordinates withheld]1905Upland sandy soils, clay river banks. Phenology: flowering.RMRM664170 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2925C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]19541963Dry irrigation ditch, sandy soils. Phenology: flowering & fruiting.RMRM664169 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2928C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]19541963Dry irrigation ditch, sandy soils. Phenology: flowering & fruiting.RMRM664168 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2939C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]19541963Dry irrigation ditch, sandy soils. Phenology: vegetative only.RMRM664167 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh2946C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]2070Upland. Phenology: flowering & fruiting.RMRM664229 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh3013C. H. Refsdal199493246U.S.A.WyomingLincoln[location and coordinates withheld]2121Willow thickets along the creek. Phenology: flowering.RMRM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7059Lori E. Brummer2011814226U.S.A.ColoradoMontroseUncompahgre Plateau: BLM lands off of H54 Road, ca 12 air mi S of Delta.-108.074638.57681728Along irrigation ditch in desert scrub. Phenology: flowering & fruiting.RMRM634034 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh36368B. E. Nelson C. H. Refsdal199577188U.S.A.WyomingUintaBasins and Mountains of Southwest Wyoming: Bridger Butte, ca 5.5 air mi WSW of Fort Bridger; ca 25.5 air mi E of Evanston.-110.477241.27922252286Badland slopes with bentonite and cobblestones, with patches of juniper and sagebrush on the flatter areas. Phenology: flowering & fruiting.RMRM634044 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5194C. H. Refsdal B. E. Nelson1995710191U.S.A.WyomingLincolnBasins and Mountains of Southwest Wyoming: west end of Fossil Ridge, ca 16 air mi W of Kemmerer; 7.3 mi SW on Northwest Pipeline access road.-110.837541.767522562365Roadside. Phenology: flowering & fruiting.RMRM634043 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5248C. H. Refsdal1995713194U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: ca 6.2 air mi N of McKinnon; ca 6.1 mi N on County Road 1 from Wyo Hwy 414.-109.895341.107221342164Roadside. Phenology: flowering & fruiting.RMRM981951 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh4509Bonnie Heidel2018525145U.S.A.WyomingSweetwaterGreat Divide Basin Area: Oregon Buttes Wilderness; Study Area: ca 1.2 air mi ENE of Oregon Butte summit, ca 15.3 air mi SSW of South Pass City.-108.839542.25782341Midslope shale outcrop; with Atriplex gardenri var. utahensis, Poa spp. Phenology: flowering.RMRM634042 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh5823C. H. Refsdal1995723204U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: west flank of Cedar Mountain, ca 5 air mi NE of Lonetree; 2.6 mi E of junction of Sage Creek Mountain Road/County Road 4-1 on both sides of county road.-110.060341.106724812518Loose clay soils, aspen/sagebrush, spring. Phenology: flowering & fruiting.RMRM259993 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7T. A. Bell1959615166U.S.A.WyomingFremontSoutheast corner of Game and Fish Department Unit, near Ocean Lake.Dry roadside.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6409C. 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.-109.137340.879816461670Upland, sandy soils, scattered juniper, salt desert shrubs. Phenology: flowering & fruiting.RM Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6429C. 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 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6457C. H. Refsdal Barbara McNight199581213U.S.A.UtahDaggettSouthwestern Wyoming and Adjacent Utah: Browns Park: Green River, ca 12.2 air mi ESE of Dutch John.-109.137340.86531646Sandy soils. Phenology: flowering & fruiting.RMRM634038 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh6956C. H. Refsdal1995815227U.S.A.WyomingUinta[location and coordinates withheld]20362054Salt desert shrubs, sandy soils, calcium carbonate deposits from a mineral spring. Phenology: flowering & fruiting.RMRM634037 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7712C. 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.RMRM634036 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7783C. H. Refsdal199591244U.S.A.WyomingUinta[location and coordinates withheld]2048Creekside, Salix. Phenology: flowering & fruiting.RMRM634035 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh7796C. H. Refsdal199592245U.S.A.WyomingSweetwaterBasins and Mountains of Southwest Wyoming: Linwood Canyon, ca 2.8 air mi NE of Manila, Utah on both sides of Wyo Hwy 530.-109.645841.020919141957Semi-barren desert hills, scattered juniper, red sandstone outcrops. Phenology: flowering & fruiting.RMRM666770 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8297Amy J. Roderick1998815227U.S.A.WyomingNatronaUpper North Platte and Laramie River Drainages: along Poison Spider Road, ca 19.4 air mi SE of Waltman.-107.040742.81471859Sagebrush-grassland and roadside; red sandy soil. Phenology: flowering & fruiting.RMRM666769 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8317Amy 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.-106.372141.90762042Sagebrush-grassland with greasewood. Phenology: flowering.RMRM666768 Iva axillarisphysical specimenAsteraceaeIvaaxillarisPursh8412Amy J. Roderick1998817229U.S.A.WyomingCarbonUpper North Platte and Laramie River Drainages: Edson N of U.S. Hwy 30-287, ca 12 air mi SW of Hanna.-106.779541.80572079Saline flats near holding pond. Phenology: flowering.RMTRM909608 Iva axillaris var. parvifolia var. nov.physical specimenAsteraceaeIvaaxillarisvar. parvifoliaS. L. Welsh and A. HuberIsotype for <i>Iva</i> <i>axillaris</i> Pursh var. <i>parvifolia</i> S. L. Welsh and A. Huber. W. N. Amer. Naturalist 72(4): 445-446. 2012.28183S. Goodrich and A. Huber201177188U.S.A.ColoradoMoffatBlue Hill.-108.71755640.8528612065Desert shrub community on light colored clay soil. Ca 2076 m elevation. Phenology: flowering & fruiting. Type Specimen.RMTCOLO544341 Iva axillaris var. parvifolia var. nov.physical specimenAsteraceaeIvaaxillarisvar. parvifoliaS. L. Welsh and A. HuberIsotype for <i>Iva</i> <i>axillaris</i> Pursh var. <i>parvifolia</i> S. L. Welsh and A. Huber. W. N. Amer. Naturalist 72(4):445 (-446). 2012 [Dec ? 2012].28183(9)Sherel Goodrich A. Huber201177188U.S.A.ColoradoMoffatBlue Hill.-108.71755640.8528612065Desert shrub community on light colored clay soil. (ca 2076) Phenology: flowering & fruiting. Type Specimen.RMRM Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.78335B. 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.RMRM908465 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.940Hans Hallman2009621172U.S.A.MontanaPowder RiverS of U.S. Hwy 212 and E of Titus Creek, ca 22.5 air mi ESE of Ashland.-105.789845.527610911128Grass-dominated grazing land interspersed with badlands. Phenology: flowering.RMRM908466 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.3171Hans Hallman2009728209U.S.A.MontanaCarterCa 0.5 air mi S of Ridge Road at the head of Keith Creek, ca 4 air mi SE of Saddle Butte and ca 23.5 air mi SSW of Ekalaka.-104.747745.582510511158Top and slopes of grass and sagebrush-dominated butte. Phenology: flowering.RMRM598180 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.40169Ronald L. Hartman T. W. Nelson199376187U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: U.S. Hwy 20, 26, less than 1 air mi E of Fremont County.1701Alkaline draw with sandy slopes. Phenology: flowering.RMRM612987 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.14600Walter Fertig Jane Struttmann199396249U.S.A.WyomingFremontSweetwater River Valley: banks of Sweetwater River, ca 6 air mi SW of Sweetwater Station (TNC Sweetwater Preserve).2018Wet, grass-rush banks below sandy bluffs on north side of river. Phenology: flowering.RMRM598179 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.40471Ronald L. Hartman T. W. Nelson199376187U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: ca 10 air mi SW of Waltman along Powder River.1951Sandy slopes and sandstone outcrop with juniper. Phenology: flowering.RMRM612058 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.24941Erwin F. Evert1993613164U.S.A.MontanaCarbonAlong west side of U.S. Hwy 310 ca 3 mi S of Fromberg.-108.913645.3412Marsh immediately W of highway with Juncus balticus, Carex praegracilis, and Triglochin. Phenology: vegetative only.RMRM914598 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.10761Robert D. Dorn2013728209U.S.A.WyomingGoshenCa 4 air mi NE of Lingle.-104.28166742.1751310Moist meadow, with Distichlis. Phenology: flowering.RMRM958312 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.12187Robert D. Dorn201881213U.S.A.South DakotaFall RiverCheyenna River at SD Hwy 71, ca 9 mi SSW of Hot Springs.-103.56333343.305975River bank with Spartina and Salix. Phenology: fruiting.RMRM961539 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.117Patricia P. Douglas Nancy E. Hastings199999252U.S.A.WyomingFremontLander Training Area: west end of transect ca 0.8 km E of Smith Creek, ca 3.3 km NW of Little Popo Agie River.16501676West-facing slope (0-30°); greasewood desert shrubland; Frontier/Mowry formation, clay loam to sandy clay loam; ephemeral stream; with Sarcobatus vermiculatus, Chrysothamnus nauseosus, Artemisia tridentata, Atriplex confertifolia, Grindelia squarrosa, Gutierrezia sarothrae. Common; decumbent, taprooted, perennial herb; 3 dm in diameter. Phenology: flowering.RMRM961510 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.147Patricia P. Douglas Nancy E. Hastings1999910253U.S.A.WyomingFremontLander Training Area: drying seep with mineral deposits, ca 1.4 km E of Smith Creek, ca 3.7 km NW of Little Popo Agie River.16951707West-facing slope (up to 15°); Wyoming big sagebrush/desert shrubland with salt grass; Muddy formation; clay with mineral deposits; with Artemisia tridentata, Gutierrezia sarothrae, Grindelia squarrosa, Atriplex gardneri, Distichlis stricta, Koeleria macrantha. Local; erect, rhizomatous, perennial herb; 15 cm tall. Phenology: flowering.RMRM618837 Iva axillaris var. robustiorphysical specimenAsteraceaeIvaaxillarisvar. robustiorHook.18654E. Evert199068159U.S.A.WyomingJust E of Hwy. Alt. 14 and S of Shoshone River NE of Cody.1426Gully bottom along irrigation run-off channel with Cirsium arvense, Carex lanuginos, Poa pratensis, Smilacina stellata and Elaeagnus angustifolia. Phenology: flowering & fruiting.36003,1,0true