Record Number Database Code Specimen ID Project Herbarium Accession Number Barcode NPS Accession NPS Catalog Family Genus 1 Specific Epithet 1 Specific Author 1 Infraspecific Rank 1 Infraspecific Epithet 1 Infraspecific Author 1 Name 1 Qualifier Name 1 Qualifier Position Hybrid Symbol Genus 2 Specific Epithet 2 Specific Author 2 Infraspecific Rank 2 Infraspecific Epithet 2 Infraspecific Author 2 Name 2 Qualifier Name 2 Qualifier Position Conservation Status Annotations Site Key Collector Collector Number Other Collectors Day Collected Month Collected Year Collected Verbatim Collection Date Country State County Locality Site Description Minimum Elevation Maximum Elevation Elevation Unit LatitudeLongitude UTM TRS Decimal Latitude Decimal Longitude Geodetic Datum Coordinate Uncertainty Coordinate Uncertainty Unit Elevation Georeferenced TRS Georeferenced Georeference Sources Georeference Remarks Georeferenced By Specimen Notes Other Notes Phenology Cultivated Images Type Specimen? TypeDetails 1 RM 111120 Ebertowski 2002 RM Asteraceae Senecio riddellii Torr. & A. Gray 1. Senecio riddellii Torr. & A. Gray
Annotated by Peter J. Ebertowski. RM-14346 B. E. Nelson 58005 Peter Ebertowski 14 8 2002 U.S.A. Wyoming Converse Thunder Basin National Grassland and Vicinity: along the Cheyenne River ca 2 air mi below confluence of Antelope Creek and Dry Fork Cheyenne River, ca 18.5 air mi NE of Bill; ca 50 air mi NNE of Douglas. Sand bars and sandy silt flats along the river. 4280 4360 ft. 43.4275° N, 105.0107° W; uncertainty 1 mi. T40N R68W S22 NW1/4; also NE1/4 S21 43.4275 -105.0107 1 mi. Flowering N N 2 RM 111262 Ebertowski 2002 RM Asteraceae Senecio riddellii Torr. & A. Gray 1. Senecio riddellii Torr. & A. Gray
Annotated by Peter J. Ebertowski. RM-14351 B. E. Nelson 58146 16 8 2002 U.S.A. Wyoming Converse Thunder Basin National Grassland and Vicinity: along Antelope Creek at Phillips or Forest Road 973, ca 17 air mi N of Bill; ca 51 air mi N of Douglas. Sand flats in the stream bottom. 4460 ft. 43.4706° N, 105.1705° W; uncertainty 1 mi. T40N R69W S5 South1/4 43.4706 -105.1705 1 mi. Y Y Nat. Geog. TOPO! NSM Flowering and Fruiting N N 3 RM 113982 Ebertowski 2002 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14451 Peter J. Ebertowski 3401 24 8 2002 U.S.A. Wyoming Converse Thunder Basin National Grassland and Vicinity: Red Hills immediately N of gravel pit on two track off of Forest Road 942, ca 16 air mi N of Bill; ca 24 air mi SE of Wright. Scoria hills. 4700 4840 ft. 43.4562° N, 105.2703° W; uncertainty 0.5 mi. T40N R70W S9 NE1/4 43.4562 -105.2703 1 mi. Flowering and Fruiting N N 4 RM 114179 Ebertowski 2002 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14461 Peter J. Ebertowski 3579 30 8 2002 U.S.A. Wyoming Niobrara Thunder Basin National Grassland and Vicinity: 77 Hills on Wyo Hwy 270, ca 4.8 air mi N of Manville; ca 11 air mi NW of Lusk. Mix ponderosa pine and grassland on silt-sand soil. 5220 5420 ft. 42.8508° N, 104.6292° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T33N R65W S11 N1/2 42.8508 -104.6292 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N N 5 RM 114340 Ebertowski 2002 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14468 Peter J. Ebertowski 3722 2 9 2002 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: along Buzzard Creek on Keeline or Forest Road 930, ca 22 air mi ESE of Wright; ca 45 air mi SSE of Gillette. Sagebrush/grassland with sandy patches of grass. 4620 4660 ft. 43.7001° N, 105.0699° W; uncertainty 0.5 mi. T43N R68W S18 SE1/4 43.7001 -105.0699 1 mi. Flowering and Fruiting N N 6 RM 118215 Ebertowski 2003 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14565 Peter J. Ebertowski 6885 18 7 2003 U.S.A. Wyoming Niobrara Thunder Basin National Grassland and Vicinity: grassland ca 1.8 mi N of Greasewood Creek, on Greasewood or County Road 10, ca 40 air mi N of Lusk; ca 24 air mi NE of Lance Creek. Patch of bare sandy soil and broken rock in grassland. 3960 4060 ft. 43.3302° N, 104.4049° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T39N R63W S27 NE1/4 43.3302 -104.4049 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N N 7 RM 118968 Ebertowski 2003 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14582 Peter J. Ebertowski 7637 4 8 2003 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: upper (northern) part of Fields Draw, on Wyo Hwy 450, ca 32 air mi WSW of Newcastle; ca 33 air mi E of Wright. Hilltop with yucca and prairie sandreed. 4320 4440 ft. 43.6859° N, 104.8505° W T43N R67W S24 43.6859 -104.8505 Fruiting N N 8 RM 119127 Ebertowski 2003 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14587 Peter J. Ebertowski 7796 7 8 2003 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: ravine running NE from Buck Creek, on Forest Road 926, ca 24 air mi E of Wright; ca 39 air mi W of Newcastle. Ravine of sand and sandstone formations. 4480 4540 ft. 43.7568° N, 105.0101° W T44N R68W S27 NE1/4 43.7568 -105.0101 Flowering and Fruiting N N 9 RM 119583 Ebertowski 2003 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14602 Peter J. Ebertowski 8252 15 8 2003 U.S.A. Wyoming Converse Thunder Basin National Grassland and Vicinity: Antelope Creek, on two-track off Forest Road 973, ca 25 air mi SE of Wright; ca 54 air mi SW of Newcastle. Stream terrace. 4420 4460 ft. 43.4706° N, 105.1905° W T40N R69W S6 43.4706 -105.1905 Flowering and Fruiting N N 10 RM 119886 Ebertowski 2003 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14612 Peter J. Ebertowski 8554 23 8 2003 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: grassland in Mush Creek Oil Field, ca 1 mi NE of South Beaver Creek, on Wyo Hwy 450, ca 14 air mi WSW of Newcastle; ca 23 air mi SSE of Upton. Grassland, Stipa comata and Carex filifolia abundant. 4140 4280 ft. 43.7709° N, 104.5114° W T44N R64W S23 E1/2 43.7709 -104.5114 Flowering and Fruiting N N 11 RM 120048 Ebertowski 2003 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14619 Peter J. Ebertowski 8715 27 8 2003 U.S.A. Wyoming Converse Thunder Basin National Grassland and Vicinity: Red Hills, ca 1 mi S of Antelope Creek, on four-wheel drive road, ca 23 air mi SE of Wright; ca 58 air mi WSW of Newcastle. Slope of yucca and little bluestem. 4580 4800 ft. 43.4706° N, 105.2703° W T40N R70W S4 SW1/4 43.4706 -105.2703 Flowering and Fruiting N N 12 RM 120054 Ebertowski 2003 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-14620 Peter J. Ebertowski 8721 28 8 2003 U.S.A. Wyoming Weston Thunder Basin National Grassland and Vicinity: West Fork Fiddler Creek, on Upton-Fairview or County Road 59, ca 10 air mi S of Upton; ca 23 air mi WNW of Newcastle. Sandy bowl in Stipa comata grassland. 4220 4280 ft. 43.9359° N, 104.651° W T46N R65W S27 NE1/4 43.9359 -104.651 Flowering N N 13 RM 251015 Kostel 2004 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-21711 Grace M. Kostel 4614 15 10 2003 U.S.A. South Dakota Fall River Buffalo Gap National Grassland and Vicinity: ca 10 air mi WNW of Edgemont. In sand and gravel soils of roadside. 3100 ft. 43.3641° N, 104.0061° W; GPS Reading T8S R1E S9 SW1/4 43.3641 -104.0061 GPS Reading Flowering and Fruiting N N 14 RM 251952 Kostel 2005 RM 957352 Asteraceae Senecio riddellii Torr. & A. Gray RM-21758 Grace M. Kostel 10045 2 10 2005 U.S.A. Nebraska Sioux Oglala National Grassland and Vicinity: ca 13 air mi NW of Crawford at the Hudson-Meng Bonebed archeological site. On slopes and drainage of a natural spring, soils are loamy sand. 4100 ft. 42.8287° N, 103.6012° W; GPS Reading T33N R53W S17 SW1/4 42.8287 -103.6012 GPS Reading Flowering N N 15 RM 251954 Kostel 2005 RM 957351 Asteraceae Senecio riddellii Torr. & A. Gray RM-21758 Grace M. Kostel 10047 2 10 2005 U.S.A. Nebraska Sioux Oglala National Grassland and Vicinity: ca 13 air mi NW of Crawford at the Hudson-Meng Bonebed archeological site. On slopes and drainage of a natural spring, soils are loamy sand. 4100 ft. 42.8287° N, 103.6012° W; GPS Reading T33N R53W S17 SW1/4 42.8287 -103.6012 GPS Reading Flowering N N 16 RM 320647 Newton 2005 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-25091 Rachel Newton 2842 31 7 2005 U.S.A. Wyoming Albany Wetlands and Adjacent Areas: Sybille Creek, ca 29 air mi N of Laramie. Dry uplands. 6038 ft. 41.7471° N, 105.4054° W; GPS Reading T21N R72W S36 SE1/4 41.7471 -105.4054 NAD 83 GPS Reading Flowering N N 17 RM 321659 Newton 2005 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-25152 Rachel Newton 3750 3 9 2005 U.S.A. Wyoming Goshen Wetlands and Adjacent Areas: Newell Bay, Guernsey Reservoir, ca 2 air mi NW of Guernsey. Dry rocky banks. 4339 ft. 42.2965° N, 104.7758° W; GPS Reading T27N R66W S22 SW1/4 42.2965 -104.7758 NAD 83 GPS Reading Flowering and Fruiting N N 18 RM 321670 Newton 2005 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-25153 Rachel Newton 3760 3 9 2005 U.S.A. Wyoming Goshen Wetlands and Adjacent Areas: Black Canyon Point, Guernsey Reservoir, ca 3 air mi NW of Guernsey. Rocky dry slopes. 4391 ft. 42.3091° N, 104.7702° W; GPS Reading T27N R66W S15 SW1/4 42.3091 -104.7702 NAD 83 GPS Reading Flowering and Fruiting N N 19 RM 325123 Newton 2006 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-25311 Rachel Newton 6507 29 7 2006 U.S.A. Wyoming Weston Wetlands and Adjacent Areas: seeping spring, ca 7 air mi NE of Newcastle. Dry, sandy Pinus forest. 4834 ft. 43.89099° N, 104.07884° W; GPS Reading T45N R60W S8 NE1/4 of SE1/4 43.89099 -104.07884 NAD 83 GPS Reading Flowering and Fruiting N N 20 RM 340704 Porter RM 253745 RM0310241 Asteraceae Senecio riddellii Torr. & A. Gray RM-32081 C. L. Porter 7441 8 9 1957 U.S.A. Wyoming Goshen On U.S. Hwy 85 near Jay Em. Sandy hills. 4600 ft. 42.4626° N, 104.3638° W; NAD 83, uncertainty 2 mi., Digital Map T29N R63W S25 42.4626 -104.3638 NAD 83 2 mi. Digital Map Located on the east side of US Hwy 85, Rawhide Creek, and Jay Em among the hills; geo-locate.org. EL Flowering and Fruiting N RM0310241 N 21 RM 341151 Porter RM 260131 Asteraceae Senecio riddellii Torr. & A. Gray RM-32293 C. L. Porter 7984 Marjorie W. Porter 4 8 1959 U.S.A. Wyoming Goshen 2-4 mi SW of Ft. Laramie. Common, sandy roadsides. 4600 ft. 42.1987° N, 104.5672° W; NAD 83, uncertainty 2 mi., Digital Map T26N R64W S29 42.1987 -104.5672 NAD 83 2 mi. N Y Digital Map Located at the crossing of WY Hwy 160 and the Laramie River; ca 3 road miles SW of Fort Laramie, the city that is, on WY Hwy 160; ca 0.5 air miles SW of Ft. Laramie; geo-locate.org. EL Flowering and Fruiting N N 22 RM 358106 RMHERB1 RM 7593 RM0310245 Asteraceae Senecio riddellii Torr. & A. Gray RM-34645 Aven Nelson 2571 31 7 1896 U.S.A. Wyoming Niobrara Lusk. 5100 ft. 42.7649° N, 104.4512° W; NAD 83, uncertainty 1 mi., Nat. Geog. TOPO! T32N R63W S8 42.7649 -104.4512 NAD 83 1 mi. Y Y Nat. Geog. TOPO! BEN On RR bank--Field book Flowering and Fruiting N RM0310245 N 23 RM 360516 RMHERB1 RM 65388 RM0310243 Asteraceae Senecio riddellii Torr. & A. Gray RM-35959 Aven Nelson 8412 17 7 1907 U.S.A. Wyoming Niobrara Manville. Sandy banks. 5250 ft. 42.7791° N, 104.6177° W; NAD 83, uncertainty 1 mi., Nat. Geog. TOPO! T32N R65W S1 42.7791 -104.6177 NAD 83 1 mi. Y Y Nat. Geog. TOPO! BEN Flowering N RM0310243 N 24 RM 360572 RMHERB1 RM 65387 RM0310244 Asteraceae Senecio riddellii Torr. & A. Gray RM-36009 Aven Nelson 8562 4 8 1901 U.S.A. Wyoming Platte Uva. Sandy creek bottoms. 4460 ft. T25N R67W S20 42.1306 -104.9203 NAD 83 1 mi. Y Y Nat. Geog. TOPO! Flowering and Fruiting N RM0310244 N 25 RM 361139 RMHERB1 RM 7591 RM0310242 Asteraceae Senecio riddellii Torr. & A. Gray RM-34648 Aven Nelson s.n. 1 8 1896 U.S.A. Wyoming Platte Chug Creek. 4600 ft. 42.0397° N, 104.895° W; uncertainty 5 mi. T24N R67W S21 42.0397 -104.895 5 mi. Flowering and Fruiting N RM0310242 N 26 RM 361955 RMHERB1 RM 302138 RM0310286 Asteraceae Senecio riddellii Torr. & A. Gray RM-37021 Barry Hammel 740 16 9 1977 U.S.A. Wyoming Albany Ca 1 mi S of Woods Landing, along the Laramie River. Bank of irrigation ditch along river; several in disturbed ground. 7500 ft. T13N R77W S15 E1/2 41.0955 -106.0158 NAD 83 1 mi. N N Nat. Geog. TOPO! Flowering and Fruiting N RM0310286 N 27 RM 364141 RMHERB1 RM 294001 RM0310240 Asteraceae Senecio riddellii Torr. & A. Gray RM-38593 David J. Cooper s.n. 22 8 1975 U.S.A. Wyoming Converse Antelope Creek. Common: growing in moderate shade of Cottonwood forest near creek. 4000 4500 ft. 43.4562° N, 105.1505° W; uncertainty 5 mi. T40N R69W S9 43.4562 -105.1505 5 mi. Flowering N RM0310240 N 28 RM 376129 RMHERB1 RM 183860 RM0310237 Asteraceae Senecio riddellii Torr. & A. Gray RM-43456 Gerald B. Ownbey 627 25 8 1940 U.S.A. Wyoming Goshen Ca 15 mi S of Torrington on Cheyenne Hwy (U.S. Hwy 85). Native sod. 4300 ft. 41.8698° N, 104.2666° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T22N R62W S23 41.8698 -104.2666 NAD 83 1 mi. Nat. Geog. TOPO! Measured from intersection of U.S. Hwys 26 and 85 in Torrington. BEN Flowering N RM0310237 N 29 RM 379290 RMHERB1 RM 544439 RM0310284 Asteraceae Senecio riddellii Torr. & A. Gray RM-18706 Jan Pollet 622 2 9 1989 U.S.A. Wyoming Platte North Platte River: S of U.S. Hwy 26, 0.5 road mi S of Guernsey. 4340 ft. 42.2549° N, 104.7443° W; uncertainty 1 mi. T26N R66W S2 42.2549 -104.7443 1 mi. Flowering and Fruiting N RM0310284 N 30 RM 379357 RMHERB1 RM 543883 RM0310285 Asteraceae Senecio riddellii Torr. & A. Gray RM-45318 Jan Pollet 705 1 9 1989 U.S.A. Wyoming Platte Guernsey Reservoir, east shore, 6 road mi NW of Guernsey. 4340 ft. 42.3266° N, 104.7834° W; uncertainty 4 mi. T27N R66W S9; also S15 and S22 42.3266 -104.7834 4 mi. Flowering and Fruiting N RM0310285 N 31 RM 379392 RMHERB1 RM 544438 RM0310283 Asteraceae Senecio riddellii Torr. & A. Gray RM-18708 Jan Pollet 746 3 9 1989 3 Sept 1989 U.S.A. Wyoming Platte Between Fish Creek and Fish Creek Road, 18 road mi NW of Wheatland. Stock ponds and drainage of ponds. 4748 ft. 42.2262° N, 105.0575° W; uncertainty 1 mi. T26N R68W S18 42.2262 -105.0575 1 mi. N N Flowering and Fruiting N RM0310283 N 32 RM 381622 RMHERB1 RM 398889 RM0310282 Asteraceae Senecio riddellii Torr. & A. Gray RM-46622 Karin M. Guernsey 158 9 11 1987 U.S.A. Wyoming Laramie Pine Bluffs: SE of rest area on top of bluffs, 0.8 air mi SW of Pine Bluffs (town). Ponderosa pine/grassland ecotone. 5250 ft. 41.1818° N, 104.0752° W; uncertainty 1 mi. T14N R60W S15 41.1818 -104.0752 1 mi. Flowering N RM0310282 N 33 RM 385005 RMHERB1 RM 568837 RM0310287 Asteraceae Senecio riddellii Torr. & A. Gray RM-48722 Neil Snow 4579 20 7 1989 U.S.A. Wyoming Albany Dirt road leading N along east side of Sheep Mountain, ca 3 mi NNE of Woods Landing. Roadside, in gravelly soil. 7500 ft. 41.1531° N, 106.0045° W; uncertainty 1 mi. T14N R77W S26 41.1531 -106.0045 1 mi. N N Flowering N RM0310287 N 34 RM 386246 RMHERB1 RM 197399 RM0310238 Asteraceae Senecio riddellii Torr. & A. Gray RM-49708 Robert E. Pfadt 112 U.S.A. Wyoming Laramie 4 or 5 mi E of Cheyenne on U.S. Hwy 30. 6100 ft. 41.1531° N, 104.6865° W; uncertainty 2 mi. T14N R65W S29 41.1531 -104.6865 2 mi. Flowering N RM0310238 N 35 RM 386326 RMHERB1 RM 197369 RM0310239 Asteraceae Senecio riddellii Torr. & A. Gray RM-49759 Robert E. Pfadt s.n. 1 9 1944 U.S.A. Wyoming Goshen 18 mi S of Lusk. 4980 ft. 42.5267° N, 104.3624° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T30N R63W S36 42.5267 -104.3624 NAD 83 1 mi. Y Y Nat. Geog. TOPO! BEN Fruiting N RM0310239 N 36 RM 392661 RMHERB1 RM 764634 RM0310269 Asteraceae Senecio riddellii Torr. & A. Gray RM-54325 Robert D. Dorn 9959 24 8 2004 U.S.A. Wyoming Goshen Fort Laramie National Historic Site. In grassland with Artemisia filifolia and Hesperostipa. 4200 ft. 42° 12' N, 104° 32.3' W; unknown, , GPS reading T26N R64W S28 SE1/4 NE1/4 42.2 -104.538333 unknown N N GPS reading Common; flowers yellow. Flowering N RM0310269 N 37 RM 398571 WYNDD RM 602377 RM0310268 Asteraceae Senecio riddellii Torr. & A. Gray RM-58298 Walter Fertig 14620 Jane Struttmann 21 9 1993 U.S.A. Wyoming Platte Foothills of Laramie Range: northwest shore of Wheatland Reservoir #1, ca 6 air mi SW of Wheatland. Sagebrush-grassland on low bluff on dry, gravelly soil. 4920 ft. 41.9958° N, 105.05° W; uncertainty 0.25 mi. T23N R68W S6 NE1/4 NE1/4 41.9958 -105.05 0 mi. N N Flowering N RM0310268 N 38 RM 437013 South Dakota RM 106680 RM0311149 Asteraceae Senecio riddellii Torr. & A. Gray RM-459416 Arthur C. McIntosh 895 6 9 1926 U.S.A. South Dakota Fall River 8 mi SE of Hot Springs. Clump along road. Flowering and Fruiting N RM0311149 N 39 RM 437547 South Dakota USFS 483048 USFS0072135 Asteraceae Senecio riddellii Torr. & A. Gray RM-66916 Charles P. Pase 791 28 8 1956 U.S.A. South Dakota Custer Black Hills National Forest: W Pass Creek. On 5% east slope; silt, loam soil; mixed prairie with Bouteloua gracilis, Buchloe dactyloides, and Stipa comata. 4600 4800 ft. 43.6153° N, 103.8458° W; uncertainty 1 mi. T5S R2E S14 43.6153 -103.8458 1 mi. Flowering and Fruiting N USFS0072135 N 40 RM 441968 South Dakota RM 568194 RM0311150 Asteraceae Senecio riddellii Torr. & A. Gray RM-68522 James R. Johnson 093 14 9 1991 U.S.A. South Dakota Fall River Along U.S. Forest Service Road 318 SE of Pilger Mountain. Roadside. 4270 ft. 43.4447° N, 103.8429° W; uncertainty 0.5 mi. T7S R2E S14; also NE1/4 43.4447 -103.8429 1 mi. Occasional. Flowering and Fruiting N RM0311150 N 41 RM 441969 South Dakota RM 568196 RM0311151 Asteraceae Senecio riddellii Torr. & A. Gray RM-68523 James R. Johnson 100 14 9 1991 U.S.A. South Dakota Custer Sandy soil in mixed grass prairie. 4750 ft. 43.6058° N, 103.7319° W; uncertainty 0.5 mi. T5S R3E S23 NW1/4 43.6058 -103.7319 1 mi. Common. Flowering and Fruiting N RM0311151 N 42 RM 477264 So Rocky Mts RM 192037 Asteraceae Senecio riddellii Torr. & A. Gray Senecio riddellii Torr. & A. Gray
Annotated by B. E. Nelson in 2004. RM-87621 Aven Nelson 4573 3 9 1940 U.S.A. Colorado Larimer Rocky Mountain National Park: North Fork Big Thompson Canyon. Road banks and ravines. Flowering N N 43 RM 477635 So Rocky Mts RM 718698 Asteraceae Senecio riddellii Torr. & A. Gray RM-87809 B. Koblitz 404 29 6 2000 U.S.A. Colorado Larimer Along Larimer County Road 37 (Red Mountain Road), 4 mi E of intersection with U.S. Hwy 287. Roadside, red soils, with Chrysothamnus nauseosa and Rhus trilobata. 1951 m. 40° 52.9' N, 105° 16.4' W 40.881667 -105.273333 Flowering N N 44 RM 480985 So Rocky Mts RM 345007 Asteraceae Senecio riddellii Torr. & A. Gray Senecio riddellii Torr. & A. Gray
Annotated by B. E. Nelson in 2004. RM-89238 Dieter H. Wilken 13889 29 9 1982 U.S.A. Colorado Logan Along U.S. Hwy 6, 2.8 mi E of junction with I-76. Perennial on sandy soil with Dalea, Muhlenbergia and Artemisia filifolia. 4060 ft. 40.6331° N, 103.1294° W; uncertainty 1 mi. T8N T52W S25 40.6331 -103.1294 1 mi. Flowering and Fruiting N N 45 RM 481398 So Rocky Mts RM 745818 Asteraceae Senecio riddellii Torr. & A. Gray RM-89486 Dina Clark 560 17 9 1994 U.S.A. Colorado Las Animas Mesa de Maya Region: upper Pacheco Canyon. Mixed grass prairie above canyon with Chondrosum hirsutum, Bothriochloa laguroides and Aristida divaricata. 5740 ft. T34S R56W S28 NE1/4 Flowering and Fruiting N N 46 RM 481796 So Rocky Mts RM 128171 Asteraceae Senecio riddellii Torr. & A. Gray RM-89671 Earl F. Castetter 891 1931 U.S.A. New Mexico Sandoval Near Domingo. Roadside. 5300 ft. 35.512 -106.326 NAD 83 3 mi. Y Nat. Geog. TOPO! Flowering N N 47 RM 482445 So Rocky Mts RM 63526 Asteraceae Senecio riddellii Torr. & A. Gray Senecio riddellii Torr. & A. Gray
Annotated by C. L. Porter in 1953. RM-71227 Earl L. Johnston 228C 1909 U.S.A. Colorado Weld Evans. Flowering N N 48 RM 485134 So Rocky Mts RM 172591 Asteraceae Senecio riddellii Torr. & A. Gray RM-91163 Francis Ramaley 16341 J. Ewan 15 9 1937 U.S.A. Colorado Morgan 4 mi S of Brush. Sand hill. Flowering and Fruiting N N 49 RM 487067 So Rocky Mts RM 169991 Asteraceae Senecio riddellii Torr. & A. Gray RM-91544 George E. Osterhout 2329 11 9 1900 U.S.A. Colorado Weld New Windsor. Flowering N N 50 RM 488053 So Rocky Mts RM 169985 Asteraceae Senecio riddellii Torr. & A. Gray RM-91560 George E. Osterhout 3900 9 1901 U.S.A. Colorado Weld New Windsor. Flowering and Fruiting N N 51 RM 489775 So Rocky Mts RM 169984 Asteraceae Senecio riddellii Torr. & A. Gray RM-81300 George E. Osterhout 6878 19 9 1927 U.S.A. Colorado Larimer Canyon of the Thompson. Flowering N N 52 RM 491988 So Rocky Mts RM 92752 Asteraceae Senecio riddellii Torr. & A. Gray RM-92671 Ira W. Clokey 2945 3 9 1917 U.S.A. Colorado Denver Denver. Prairie. 5300 ft. Flowering and Fruiting N N 53 RM 491989 So Rocky Mts RM 92975 Asteraceae Senecio riddellii Torr. & A. Gray RM-92671 Ira W. Clokey 2945 3 9 1917 U.S.A. Colorado Denver Denver. Prairie. 5300 ft. Flowering and Fruiting N N 54 RM 492505 So Rocky Mts RM 669093 Asteraceae Senecio riddellii Torr. & A. Gray Senecio riddellii Torr. & A. Gray
Annotated by B. E. Nelson in 2004. RM-92955 J. H. Christ 1697 28 8 1935 U.S.A. Colorado El Paso Jimmy Camp Creek; south side of Farmer's Highway. Flowering and Fruiting N N 55 RM 493490 So Rocky Mts RM 580582 Asteraceae Senecio riddellii Torr. & A. Gray Senecio riddellii Torr. & A. Gray
Annotated by B. E. Nelson in 2004. RM-73507 Kanya Santanachote 96 2 9 1988 U.S.A. Colorado Boulder Colorado Tallgrass Prairie Natural Area: Parcel 7; S of Boulder; at the beginning of Highway 93. Xeric tallgrass community; moderately steep terraces; soil very cobble-like and sandy. 1700 m. Flowering and Fruiting N N 56 RM 495719 So Rocky Mts RM 47487 Asteraceae Senecio riddellii Torr. & A. Gray Senecio riddellii Torr. & A. Gray
Annotated by B. E. Nelson in 2004. RM-83673 no collector 3049 18 10 1896 U.S.A. Colorado Larimer Above Prairie Hill. Flowering and Fruiting N N 57 RM 496976 So Rocky Mts RM 580446 Asteraceae Senecio riddellii Torr. & A. Gray RM-74533 Ronald C. Wittmann 18468 William A. Weber 7 9 1991 U.S.A. Colorado Baca Picture Canyon. Canyon floor. 37.0247° N, 102.7514° W; uncertainty 2 mi. T35S R47W S6; also S7 37.0247 -102.7514 2 mi. Flowering N N 58 RM 502812 So Rocky Mts RM 579520 Asteraceae Senecio riddellii Torr. & A. Gray RM-76477 Walter Fertig 13045 17 7 1992 U.S.A. Colorado Larimer Eastern foothills of Colorado Front Range: adjacent to KOA Campground and U.S. Hwy 287, ca 12 air mi N of Fort Collins. Open canopy blue grama/needle and thread shortgrass grassland and slopes. Flowering N N 59 RM 502996 So Rocky Mts RM 580951 Asteraceae Senecio riddellii Torr. & A. Gray RM-98154 William A. Weber 18270 13 7 1991 U.S.A. Colorado Baca N of head of Picture Canyon, 0-4 mi S on road 18 from road J. Fields and roadsides. Flowering N N 60 RM 567868 SE WY 1984 RM 598068 RM0310251 Asteraceae Senecio riddellii Torr. & A. Gray RM-104270 B. E. Nelson 11503 9 9 1984 U.S.A. Wyoming Laramie [location and coordinates withheld] Sandy slopes below rough breaks. 5200 ft. Flowering N RM0310251 N 61 RM 567947 SE WY 1984 RM 598067 RM0310256 Asteraceae Senecio riddellii Torr. & A. Gray RM-104279 B. E. Nelson 11575 10 9 1984 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: "Five Buttes", ca 5.3 air mi of Jay Em; ca 27.5 air mi N of Lingle, just E of U.S. Hwy 85. Slopes of the buttes. 4900 ft. 42.5349° N, 104.3632° W; NAD 83, uncertainty 700 ft., Nat. Geog. TOPO! T30N R63W S36 42.5349 -104.3632 NAD 83 700 ft. N N Nat. Geog. TOPO! BEN Flowering N RM0310256 N 62 RM 567970 SE WY 1984 RM 598066 RM0310254 Asteraceae Senecio riddellii Torr. & A. Gray RM-104283 B. E. Nelson 11596 10 9 1984 U.S.A. Wyoming Niobrara Southern Powder River Basin/Southeastern Plains: Hat Creek Breaks: ridge between S Bar and East Indian Creeks, ca 1.5 air mi SW of Whitman; ca 18 air mi NE of Lusk. Sandy slopes and flats in rough breaks. 4700 ft. 42.8688° N, 104.1291° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T33N R61W S1 42.8688 -104.1291 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310254 N 63 RM 574681 SE WY 1978 RM 317982 RM0310274 Asteraceae Senecio riddellii Torr. & A. Gray RM-104849 B. E. Nelson 2318 25 9 1978 U.S.A. Wyoming Laramie Southern Powder River Basin/Southeastern Plains: Southeastern Plains: ca 26 air mi NE of Cheyenne; ca 19.5 air mi WSW of Albin on U.S. Hwy 85. In gravelly roadcut with Machaeranthera and Heterotheca. 5750 ft. 41.40055° N, 104.4665° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T17N R63W S31 NE1/4 41.40055 -104.4665 NAD 83 0 mi. N N Nat. Geog. TOPO! TB Frequent. Fruiting N RM0310274 N 64 RM 574802 SE WY 1978 RM 317981 RM0310271 Asteraceae Senecio riddellii Torr. & A. Gray RM-104864 B. E. Nelson 2438 27 9 1978 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: ca 11.5 air mi NNE of Lingle, ca 17.5 air mi NNW of Torrington on U.S. Hwy 85, by Dry Rawhide Creek. Common in sandy borrow pit with Machaeranthera and Artemisia frigida. 4400 ft. 42.3015° N, 104.3039° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T27N R62W S21 NW1/4 42.3015 -104.3039 NAD 83 0 mi. Y N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310271 N 65 RM 574823 SE WY 1978 RM 317980 RM0310272 Asteraceae Senecio riddellii Torr. & A. Gray RM-104867 B. E. Nelson 2459 27 9 1978 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: ca 6 air mi WSW of Jay Em, ca 31 air mi NW of Torrington on Ft. Laramie Road by Muskrat Creek. On sandy roadside with Croton and Artemisia dracunculus. 4750 ft. 42.4491° N, 104.4866° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T29N R64W S36 NW1/4 42.4491 -104.4866 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Common. Flowering and Fruiting N RM0310272 N 66 RM 574842 SE WY 1978 RM 317979 RM0310273 Asteraceae Senecio riddellii Torr. & A. Gray RM-104873 B. E. Nelson 2478 28 9 1978 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole: Springer Reservoir (Goshen Hole Reservoir) ca 1.5 air mi S of Yoder, ca 13.5 air mi SSW of Torrington. In upland with Artemisia filifolia and Haplopappus. 4300 ft. 41.8968° N, 104.301° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T22N R62W S10 NE1/4 41.8968 -104.301 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Common. Fruiting N RM0310273 N 67 RM 574898 SE WY 1978 RM Asteraceae Senecio riddellii Torr. & A. Gray RM-104878 B. E. Nelson 2534 28 9 1978 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole: Hawk Springs Reservoir, ca 6.5 air mi SE of Hawk Springs, ca 25 air mi S of Torrington. On sandy roadside with Croton. 4450 ft. 41.7094° N, 104.2046° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T20N R61W S16 NW1/4 41.7094 -104.2046 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Common. N N 68 RM 597664 Dueholm 1978 RM 325411 RM0310281 Asteraceae Senecio riddellii Torr. & A. Gray RM-106579 Keith H. Dueholm 6062 24 8 1978 U.S.A. Wyoming Niobrara [location and coordinates withheld] Sandy plains and draw, sandy roadcut and stream cut bank, sandy hill; right-of-way. 4800 ft. Flowering N RM0310281 N 69 RM 638368 SE WY 1993 RM 598065 RM0310252 Asteraceae Senecio riddellii Torr. & A. Gray RM-108305 B. E. Nelson 26961 18 7 1993 U.S.A. Wyoming Laramie [location and coordinates withheld] Grassy slopes in the rough breaks. 5160 5280 ft. Flowering N RM0310252 N 70 RM 638461 SE WY 1993 RM 598064 RM0310250 Asteraceae Senecio riddellii Torr. & A. Gray RM-108306 B. E. Nelson 27053 18 7 1993 U.S.A. Wyoming Laramie [location and coordinates withheld] On stabilized sand dunes. 4860 4980 ft. Flowering and Fruiting N RM0310250 N 71 RM 638655 SE WY 1993 RM 598063 RM0310264 Asteraceae Senecio riddellii Torr. & A. Gray RM-108313 B. E. Nelson 27241 23 7 1993 U.S.A. Wyoming Converse Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: just W of 55 Ranch or County Road 23 and just NW of Rolling Hills, ca 4.2 air mi N of Glenrock; ca 3.5 air mi N of the North Platte River. Sand dunes with active and stabilized areas and blowouts. 5480 5520 ft. 42.9175° N, 105.8569° W T34N R75W S16 & S17 42.9175 -105.8569 Flowering N RM0310264 N 72 RM 638680 SE WY 1993 RM 598062 RM0310263 Asteraceae Senecio riddellii Torr. & A. Gray RM-108315 B. E. Nelson 27265 23 7 1993 U.S.A. Wyoming Converse Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along 55 Ranch or County Road 23, ca 5.8 air mi N of Glenrock or ca 5 air mi N of the North Platte River. Rolling sandy plains of Artemisia cana-grassland. 5540 5580 ft. 42.9458° N, 105.8569° W T34N R75W S4 SW1/4 42.9458 -105.8569 Flowering N RM0310263 N 73 RM 639576 SE WY 1993 RM 598061 RM0310255 Asteraceae Senecio riddellii Torr. & A. Gray RM-108346 B. E. Nelson 28151 3 8 1993 U.S.A. Wyoming Niobrara [location and coordinates withheld] Cracks and adjacent to sandstone or siltstone pavement. 4750 4770 ft. Flowering N RM0310255 N 74 RM 639740 SE WY 1993 RM 598060 RM0310276 Asteraceae Senecio riddellii Torr. & A. Gray RM-108352 B. E. Nelson 28309 3 8 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: at the end of County Road 30 ca 1.5 mi W of Nebraska; ca 3 air mi S of Lone Sand Hill, ca 24.2 air mi NNE of Torrington; ca 15 air mi ESE of Jay Em. Rolling plains with sandstone or siltstone knolls, small blowouts. 4780 4820 ft. 42.404° N, 104.0832° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T28N R60W S16 NW1/4 42.404 -104.0832 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310276 N 75 RM 640067 SE WY 1993 RM 598059 RM0310248 Asteraceae Senecio riddellii Torr. & A. Gray RM-108359 B. E. Nelson 28634 17 8 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek ca 1/4 mi above Little Bear Creek on County Road 153, ca 14.3 air mi SE of Chugwater; ca 38.5 air mi SW of Torrington. Sandy flats between the creeks and bluffs. 5160 5180 ft. 41.6166° N, 104.6186° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T19N R65W S14 NE1/4 41.6166 -104.6186 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310248 N 76 RM 640870 SE WY 1993 RM 598058 RM0310261 Asteraceae Senecio riddellii Torr. & A. Gray RM-108400 B. E. Nelson 29427 29 8 1993 U.S.A. Wyoming Niobrara Southern Powder River Basin/Southeastern Plains: Hat Creek Breaks: between S Bar or County Road 62 and S Bar Creek, ca 18 air mi NE of Lusk; ca 15 air mi N of Van Tassell. Sandy slopes with sandstone outcrops and scattered ponderosa pine. 4540 4720 ft. 42.877° N, 104.1291° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T34N R61W S36 SE1/4 42.877 -104.1291 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310261 N 77 RM 640956 SE WY 1993 RM 598057 RM0310253 Asteraceae Senecio riddellii Torr. & A. Gray RM-108403 B. E. Nelson 29510 29 8 1993 U.S.A. Wyoming Niobrara Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Indian Creek off Hat Creek or County Road 64, ca 16 air mi NE of Lusk; ca 19.8 air mi NW of Van Tassell. Steep banks along the stream bottom. 4280 4300 ft. 42.9287° N, 104.2273° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T34N R61W S18 N1/4 42.9287 -104.2273 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310253 N 78 RM 641049 SE WY 1993 RM 598056 RM0310279 Asteraceae Senecio riddellii Torr. & A. Gray RM-108408 B. E. Nelson 29601 31 8 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Goshen Hole: along the North Platte River on London Flats, ca 2.2 air mi S of Lingle, ca 9.5 air mi WNW of Torrington. Bench in the river bottom. 4140 ft. 42.1072° N, 104.3566° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T25N R62W S30 SW1/4 42.1072 -104.3566 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310279 N 79 RM 641171 SE WY 1993 RM 598055 RM0310249 Asteraceae Senecio riddellii Torr. & A. Gray RM-108415 B. E. Nelson 29720 23 9 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Horse Creek and adjacent plains W of County Road 191, ca 4 air mi S of La Grange; ca 34 air mi S of Torrington. Gullies and steep slopes along the creek. 4660 4780 ft. 41.5708° N, 104.1408° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T19N R61W S36 41.5708 -104.1408 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310249 N 80 RM 641214 SE WY 1993 RM 598054 RM0310275 Asteraceae Senecio riddellii Torr. & A. Gray RM-108418 B. E. Nelson 29762 24 9 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Goshen Hole: between Horse Creek and Table Mountain on Wyoming Game and Fish Table Mountain Wildlife Habitat Management Area, ca 4 air mi SSE of Huntley; ca 14 air mi S of Torrington. Rolling mixed grass plains. 4120 4160 ft. 41.8756° N, 104.1193° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T22N R60W S18 41.8756 -104.1193 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310275 N 81 RM 641281 SE WY 1993 RM 598053 RM0310278 Asteraceae Senecio riddellii Torr. & A. Gray RM-18513 B. E. Nelson 29827 27 9 1993 U.S.A. Wyoming Goshen [location and coordinates withheld] Sandy-gravelly floodplain with scattered cottonwoods, Russian olives, and patches of snowberries. 4130 ft. Fruiting N RM0310278 N 82 RM 641318 SE WY 1993 RM 598052 RM0310277 Asteraceae Senecio riddellii Torr. & A. Gray RM-108422 B. E. Nelson 29864 27 9 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Fort Laramie or County Road 8, ca 3.8 air mi NNE of Fort Laramie; ca 21.3 air mi NW of Torrington. Mixed grass plains with low sandstone outcrops. 4480 4520 ft. 42.2649° N, 104.4931° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T27N R64W S36 SW1/4 42.2649 -104.4931 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310277 N 83 RM 641339 SE WY 1993 RM 598051 RM0310265 Asteraceae Senecio riddellii Torr. & A. Gray RM-108425 B. E. Nelson 29885 27 9 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Hartville Uplift: along Whalen Canyon Road ca 3/4 mi NE of Hell Gap, ca 14.5 air mi NW of Fort Laramie; ca 33 air mi NW of Torrington. Mixed grass plains. 4900 ft. 42.4044° N, 104.6341° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T28N R65W S14 NW1/4 42.4044 -104.6341 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310265 N 84 RM 641376 SE WY 1993 RM 598050 RM0310260 Asteraceae Senecio riddellii Torr. & A. Gray RM-108430 B. E. Nelson 29922 29 9 1993 U.S.A. Wyoming Niobrara [location and coordinates withheld] Road banks along abandoned highway. 4800 5000 ft. Flowering and Fruiting N RM0310260 N 85 RM 641427 SE WY 1993 RM 598117 RM0310259 Asteraceae Senecio riddellii Torr. & A. Gray RM-108435 B. E. Nelson 29973 29 9 1993 U.S.A. Wyoming Niobrara Southern Powder River Basin/Southeastern Plains: Southern Powder River Basin: above Spring Creek along a County Road between Redbird or County Road 11 and Wasserburger or County Road 13, ca 19 air mi NE of Lance Creek; ca 25 air mi N of Lusk. Rough breaks and flats at the bottom. 3940 4050 ft. 43.2311° N, 104.3795° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T38N R63W S36 NW1/4 43.2311 -104.3795 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310259 N 86 RM 641514 SE WY 1993 RM 598116 RM0310262 Asteraceae Senecio riddellii Torr. & A. Gray RM-108441 B. E. Nelson 30060 1 10 1993 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Hartville Uplift: Sandy Beach along Guernsey Reservoir in Guernsey State Park, ca 4 air mi NW of Guernsey. Sandy sagebrush-grassland. 4440 ft. 42.3139° N, 104.8028° W; uncertainty 0.5 mi. T27N R66W S17 SW1/4 42.3139 -104.8028 1 mi. Flowering and Fruiting N RM0310262 N 87 RM 645066 SE WY 1994 RM 704477 RM0310343 Asteraceae Senecio riddellii Torr. & A. Gray RM-108566 B. E. Nelson 34071 18 8 1994 U.S.A. Wyoming Laramie Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along County Road 143 ca 1 air mi S of Little Horse Creek and ca 2.5 air mi N of U.S. Hwy 85 at Midway, ca 18.7 air mi W of Albin; ca 28 air mi NE of Cheyenne. Sandy road right-of-way adjacent to mixed grass plains. 5550 5730 ft. 41.44121° N, 104.45726° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T17N R63W S17 W1/4 41.44121 -104.45726 NAD 83 1 mi. N N Nat. Geog. TOPO! TB Flowering N RM0310343 N 88 RM 645464 SE WY 1994 RM 704476 RM0310267 Asteraceae Senecio riddellii Torr. & A. Gray RM-108581 B. E. Nelson 34427 24 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along County Road 21 ca 6 air mi E of the confluence of Red Cloud Slough and Rawhide Creek, ca 7.8 air mi ESE of Jay Em; ca 28 air mi N of Torrington. Roadside, adjacent right-of-way and fence row. 4720 4730 ft. 42.4365° N, 104.2211° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T28N R61W S5 NW1/4 42.4365 -104.2211 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310267 N 89 RM 645578 SE WY 1994 RM 704475 RM0310280 Asteraceae Senecio riddellii Torr. & A. Gray RM-108584 B. E. Nelson 34540 28 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Goshen Hole: Bump-Sullivan Reservoir, ca 4 air mi S of Yoder; ca 15 air mi SSW of Torrington. Sand sage-grassland. 4290 ft. 41.8615° N, 104.3114° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T22N R62W S21 South1/2 41.8615 -104.3114 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310280 N 90 RM 645651 SE WY 1994 RM 704481 RM0310266 Asteraceae Senecio riddellii Torr. & A. Gray RM-108589 B. E. Nelson 34612 David Reilly 30 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Fort Laramie National Historic Site: vicinity of the Oregon Trail ruts above the North Platte River, ca 3 air mi W of Fort Laramie (town), ca 23 air mi NW of Torrington. Sandy plains of sand sage-grassland. 4360 4460 ft. 42.2213° N, 104.5731° W; NAD 83, uncertainty 0.25 mi., Nat. Geog. TOPO! T26N R64W S17 SW1/4 42.2213 -104.5731 NAD 83 0 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310266 N 91 RM 648336 SE WY 1993 RM 598115 RM0310258 Asteraceae Senecio riddellii Torr. & A. Gray RM-109342 Ronald L. Hartman 39992 4 7 1993 U.S.A. Wyoming Platte Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Johnson Reservoir 3, ca 6 air mi NNW of Wheatland. Sandy slopes and lake margin. 4500 ft. 42.1256° N, 104.995° W T25N R68W S22 N1/2 42.1256 -104.995 Flowering N RM0310258 N 92 RM 649151 SE WY 1993 RM 598114 RM0310257 Asteraceae Senecio riddellii Torr. & A. Gray RM-109359 Ronald L. Hartman 40799 11 7 1993 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: Goshen Hole Rim: Mers Hill, ca 10 air mi E of Slater. Sandstone outcrops and sandy slopes. 4700 4950 ft. 41.8789° N, 104.615° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T22N R65W S13 W1/2; and also E1/2 S14 41.8789 -104.615 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Flowering N RM0310257 N 93 RM 651336 SE WY 1994 RM 704457 RM0310270 Asteraceae Senecio riddellii Torr. & A. Gray RM-109486 Timothy W. Chumley 457 26 8 1994 U.S.A. Wyoming Goshen Southern Powder River Basin/Southeastern Plains: Southeastern Plains: along Bear Creek off Marsh or County Road 151, ca 17.5 air mi SW of Chugwater. Along creek. 5010 5050 ft. 41.6221° N, 104.529° W; NAD 83, uncertainty 0.5 mi., Nat. Geog. TOPO! T19N R64W S15 41.6221 -104.529 NAD 83 1 mi. N N Nat. Geog. TOPO! BEN Flowering and Fruiting N RM0310270 N 94 RM 660852 WY Black Hills RM 7594 RM0310247 Asteraceae Senecio riddellii Torr. & A. Gray RM-109902 Aven Nelson 2527 29 7 1896 U.S.A. Wyoming Weston Cambria Canyon. 4400 5200 ft. 43.9078° N, 104.2086° W; uncertainty 3 mi. T45N R61W S5; also S8, S17; also S20 43.9078 -104.2086 3 mi. Flowering N RM0310247 N 95 RM 660886 WY Black Hills RM 126607 RM0310246 Asteraceae Senecio riddellii Torr. & A. Gray RM-109923 Aven Nelson 9289 31 8 1909 U.S.A. Wyoming Weston Upton. Railroad grade. 4400 ft. 44.0902° N, 104.6309° W; uncertainty 3 mi. T48N R65W S35 44.0902 -104.6309 3 mi. Flowering N RM0310246 N 96 RM 671088 Marriott 1984 RM 373417 RM0310288 Asteraceae Senecio riddellii Torr. & A. Gray RM-105679 Hollis Marriott 9393 3 9 1984 3 Sept 1984 U.S.A. Wyoming Weston Black Hills: U. S. Hwy 16 near State Line (Gillette Canyon), ca 9.5 air mi SE of Newcastle. Roadside. 4450 ft. 43.763° N, 104.0497° W; uncertainty 1 mi. T44N R60W S27 43.763 -104.0497 1 mi. Flowering N RM0310288 N 97 RM 709546 Legler 2008 RM 900220 RM0027140 Asteraceae Senecio riddellii Torr. & A. Gray 1. Senecio riddellii Torr. & A. Gray
Annotated by Ben Legler on 2/23/2009. RM-120285 Ben Legler 10345 5 8 2008 U.S.A. New Mexico Colfax Vermejo Park Ranch: road along crest of ridgeline between Left Fork and Right Fork of York Canyon; 4.3 air mi N of Casa Grande. Gravel road maintained for oil well access, with dry gravelly shoulders and scattered weeds; located in recently burned Pinus ponderosa forest. 8662 ft. 36.951576° N, 104.971764° W; WGS 84, GPS reading 36.951576 -104.971764 WGS 84 GPS reading Stems several from a stout rootstalk, much branched above; flowers yellow; uncommon in gravelly roadside ditch. Photographed. Specimen GPS: 36.951561, -104.971855. Flowering N VPR11457,VPR11460,VPR11462,VPR11463,RM0027140 N 98 RM 81276 Elliott, Brian 1999 RM 831877 Asteraceae Senecio riddellii Torr. & A. Gray RM-13334 Brian Elliott 8134 Elizabeth Mark 3 7 1999 U.S.A. Colorado Fremont Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Arkansas River Valley, ca 1.5 mi W of Parkdale on the south side of U.S. Hwy 50. Steep rocky hills with pinyon-juniper-Quercus woodlands. 6200 ft. 38.4832° N, 105.4117° W T18S R72W S14 SW1/4 38.4832 -105.4117 Flowering N N 99 RM 81770 Elliott, Brian 1999 RM 831876 Asteraceae Senecio riddellii Torr. & A. Gray 1. Senecio riddellii Torr. & A. Gray
Annotated by Ronald L. Hartman. RM-13348 Brian Elliott 8627 Elizabeth Mark 9 7 1999 U.S.A. Colorado Pueblo Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: on Colo Hwy 96 at the junction of Siloam Road, ca 6 air mi E of Wetmore. Roadside and grassland. 5450 ft. 38.254° N, 104.9808° W T21S R68W S3 NE1/4 38.254 -104.9808 Flowering and Fruiting N N 100 RM 906000 RMHERB2 RM 957932 RM0213207 Asteraceae Senecio riddellii Torr. & A. Gray RM-451939 Nancy E. Hastings 87 29 9 2013 U.S.A. Wyoming Platte Camp Guernsey: east end of transect 1.3 km due W of Emigrant Hill Road, 3.8 km due S of Range Guard 1. Rolling; drainage in mixed grass prairie; silty loam; with Hesperostipa comata, Bouteloua gracilis, Koeleria macrantha, Calamovilfa longifolia, Yucca glauca, Gutierrezia sarothrae, Liatris punctata, Artemisia frigida, A. dracunculus, Heterotheca villosa. 1580 m. 512796E, 4698803N to 512603E, 4698800N; unknown, GPS reading N Scattered; ascending to erect, taprooted, perennial herb; 3 dm tall; disk yellow; ray yellow. Flowering and Fruiting N RM0213207 N