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RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 40369 B. E. Nelson Amy J. Roderick 1997 6 18 169 U.S.A. Wyoming Carbon Upper North Platte and Laramie River Drainages: west end of Fort Steele Breaks, W of the North Platte River, ca 6.5 air mi N of Sinclair; ca 10.5 air mi NE of Rawlins. -107.0705 41.8785 1981 2012 Rough breaks of sandstone and mudstone with intervening draws of sand to clay dominated by sagebrush with hopsage, shadscale, Gardners saltbush, and spiny horsebrush. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 57447 Ronald L. Hartman Amy J. Roderick and Cherie Winner 1997 6 11 162 U.S.A. Wyoming Natrona [location and coordinates withheld] 1670 1676 Shale hills and sandy areas and badlands. Phenology: flowering & fruiting. RM RM 913229 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 39942 Erwin F. Evert 2003 6 4 155 U.S.A. Wyoming Big Horn Bighorn Basin: along east side of Lane 42, 3.5 mi S of Burlington. 1320 Saltbush-greasewood community with Atriplex gardneri, Musineon divaricatum, Xylorhiza glabriuscula, and Cymopterus acaulis. Phenology: flowering & fruiting. RM RM 913437 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 40818 Erwin F. Evert 2004 6 11 163 U.S.A. Wyoming Big Horn Bighorn Basin: along Dry Creek 0-1/3 mi E of Wyo Hwy 32, 0.5 mi N of U.S. Hwy 14. 1307 Sagebrush-saltbush steppe on bluff above creek with Artemisia tridentata var. wyomingensis, Atriplex gardneri, and Bouteloua gracilis. RM RM 912748 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 41156 Erwin F. Evert 2005 6 5 156 U.S.A. Wyoming Big Horn Bighorn Basin: ca 1/3 mi W of Wyo Hwy 32 and 1/4 mi W of Coon Creek. 1359 Saltbush-sagebrush-grassland with Atriplex gardneri, Artemisia tridentata var. wyomingensis, Poa secunda, and Musineon divaricatum abundant. Phenology: flowering & fruiting. RM RM 621026 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 18783 Erwin F. Evert 1990 6 10 161 U.S.A. Wyoming Park Bighorn Basin: ca 1/2-3/4 mi SW of Wyo Hwy 294, ca 12 mi NW of Powell. -108.9665 44.7889 1402 Badland bluffs in sagebrush-saltbrush-grassland. Phenology: flowering & fruiting. RM RM 784104 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 28635 Erwin F. Evert 1995 6 6 157 U.S.A. Wyoming Hot Springs Bighorn Basin: ca 0.5 mi NE of Grass Creek, just N of Cottonwood Creek Road, ca 22 mi NW of Thermopolis. -108.3814 43.8655 1524 Shrub steppe with Atriplex confertifolia, Atriplex gardneri, Lappula redowskii, and Xylorhiza glabriuscula. Phenology: fruiting. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 30956 B. E. Nelson Laura Welp 1994 6 3 154 U.S.A. Wyoming Carbon Great Divide Basin Area: Great Divide Basin: along Buzzard Road, ca 2 air mi NE of Rendle Point above Separation Flats, ca 16 air mi NNW of Rawlins. -107.32 42.0081 1990 2057 Rolling plains of sand, clay, and barren clay knolls with several species of Artemisia, Atriplex, and mats of Opuntia. Phenology: flowering & fruiting. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 34962 B. E. Nelson 1995 6 15 166 U.S.A. Wyoming Carbon [location and coordinates withheld] 1987 2160 Anticlinal ridge with bands of sandstones, shales, mudstones, and clay, sandy clay, or sandy soils. Phenology: flowering & fruiting. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 36241 B. E. Nelson 1995 7 5 186 U.S.A. Wyoming Sweetwater Great Divide Basin Area: Great Divide Basin: along Dugout Draw at the west edge of Red Desert Basin, ca 27 air mi WNW of Wamsutter, ca 44 air mi ENE of Rock Springs. -108.4511 41.8372 2012 2021 Salt desert shrub with sparsely vegetated areas and knolls. Phenology: flowering & fruiting. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 540 Kevin J. Taylor 1997 5 26 146 U.S.A. Colorado Delta Northern Gunnison Basin: ca 3 air mi NNE of Crawford. -107.5825 38.7489 1829 1981 Juniper and aspen shrubland (Atriplex). Phenology: flowering. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 56399 Ronald L. Hartman Kevin J. Taylor 1997 5 17 137 U.S.A. Colorado Delta Northern Gunnison Basin: ca 4.5-7 air mi E to ESE Hotchkiss. -107.6198 38.7929 1707 2097 Rolling hills with sagebrush and saltflats, ridges with some pinyon-juniper. Phenology: flowering. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 56697 Ronald L. Hartman Kevin J. Taylor 1997 5 20 140 U.S.A. Colorado Delta Northern Gunnison Basin: ca 3 air mi S of Hotchkiss. -107.7129 38.7636 1737 1768 Breaks in plains. Phenology: flowering. RM 773410 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4828 Kevin J. Taylor 1998 5 14 134 U.S.A. Colorado Delta Northern Gunnison Basin: ca 2 air mi NW of Crawford. -107.6198 38.7342 1829 1859 Sagebrush and saltbush hills. Phenology: flowering & fruiting. RM 773409 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4850 Kevin J. Taylor 1998 5 15 135 U.S.A. Colorado Delta Northern Gunnison Basin: ca 2.5 air mi NNE of Crawford. -107.6011 38.7489 1859 Sagebrush and saltbush meadow; Juniperus. Phenology: buds. RM 773357 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5132 Kevin J. Taylor 1998 5 19 139 U.S.A. Colorado Delta Northern Gunnison Basin: ca 5 air mi SSW of Paonia. -107.508 38.7929 1707 Sagebrush and saltbush meadow. Phenology: flowering & fruiting. RM RM 802102 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 52194 B. E. Nelson Luanne Lum 2001 6 5 156 U.S.A. Wyoming Washakie Bighorn Basin: along Platte Pipeline or BLM Road 1430, ca 3/4-1 air mi S of Red Hill, ca 13.5 air mi W of Worland. -108.1993 44.0428 1 1378 1417 Badland slopes. Phenology: flowering. RM RM 802100 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 52309 B. E. Nelson Luanne Lum 2001 6 5 156 U.S.A. Wyoming Big Horn Bighorn Basin: ca 0.4-0.6 mi S of Elk Creek on Dorsey Creek or BLM Road 1103, ca 9.5 air mi SSW of Otto; ca 16 air mi SW of Basin. -108.3191 44.2628 1 1335 1347 Sagebrush-spiny horsebrush outwash areas at base of badlands. Phenology: flowering. RM RM 802101 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 52338 B. E. Nelson Luanne Lum 2001 6 5 156 U.S.A. Wyoming Big Horn Bighorn Basin: near the head of South Fork Dorsey Creek on Dorsey Creek or BLM Road 1103, ca 4 air SE of Sheep Mountain, ca 8 air mi SSW of Otto; ca 17 air mi WSW of Basin. -108.3594 44.3062 1 1378 1396 Flats below the badlands with scattered shrubs and sandstone outcrop. Phenology: flowering. RM RM 933893 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2473 Luanne Lum 2002 6 10 161 U.S.A. Wyoming Big Horn Bighorn Basin: along Dorsey Creek or BLM Road 1103, ca 7 air mi ESE of Otto and ca 11.5 air mi ESE of Greybull. -108.3997 44.3786 1 1353 1371 Sagebrush on sandy soil. Phenology: flowering & fruiting. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2698 Margarette J. Lyon 1994 5 6 126 U.S.A. Utah Grand San Miguel and Lower Dolores River Drainages: Dolores River Drainage: Dewey: confluence of Dolores and Colorado Rivers. -109.2871 38.8193 1250 Slopes along river; red sandy soils with Atriplex and cheat grass. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 31 Melanie Arnett 1998 6 7 158 U.S.A. Colorado Montrose Uncompahgre Basin: ca 1/4 air mi S of Dry Cedar Creek and southern-most portion of Kinikin Heights Road. -107.7892 38.4017 1897 1920 Adobe hills. Phenology: flowering & fruiting. RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 50723 Ronald L. Hartman 1995 5 27 147 U.S.A. Colorado Montezuma Upper Dolores River Drainage and Adjacent Areas: ca 24 air mi W of center of Cortez. -109.036 37.3055 1585 1615 Pinyon-juniper and grassland following state line, sandstone caprock with shale below. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 64932 B. E. Nelson Rob Massatti and Rachel Newton 2005 6 8 159 U.S.A. Wyoming Fremont Wetlands 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. -108.1922 43.2388 1439 1451 Rocky, sandy slopes. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 65190 B. E. Nelson 2005 6 13 164 U.S.A. Wyoming Fremont Wetlands and Adjacent Areas: Antelope Flats Wetland, between Muddy and Fivemile creeks, ca 15.5-16 air mi N of Riverton. -108.4493 43.2524 1585 Sagebrush flats adjacent to the reservoir. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 65246 B. E. Nelson 2005 6 13 164 U.S.A. Wyoming Fremont Wetlands 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. -108.307 43.2825 1469 Greasewood/saltbush flats. Phenology: flowering. RM RM 222801 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5716 C. L. Porter R. C. Rollins 1951 6 29 180 U.S.A. Wyoming Sweetwater Ca 22 mi S of Green River. -109.6914 41.2912 3 1981 Dry sandy areas in the desert. Phenology: flowering & fruiting. RM RM 10590 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3024 Aven Nelson 1897 5 30 150 U.S.A. Wyoming Sweetwater Green River. -109.4722 41.5242 3 1859 1981 Phenology: buds. RM RM 10591 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3108 Aven Nelson 1897 6 2 153 U.S.A. Wyoming Sweetwater Bitter Creek. -108.5526 41.5535 2 2042 Phenology: buds. RM RM 12724 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4825 Aven Nelson 1898 6 18 169 U.S.A. Wyoming Carbon Fort Steele. -106.9541 41.7766 3 1981 2012 Phenology: flowering & fruiting. RM RM 150356 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4398 C. L. Shear 1895 6 25 176 U.S.A. Wyoming Sweetwater Green River. -109.4722 41.5242 2 1859 River bottom. Phenology: fruiting. RM RM 264573 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. s.n. Dixie R. Smith 1961 6 26 177 U.S.A. Wyoming Big Horn University of Wyoming Experimental Pastures; ca 18 mi NW of Greybull. -108.3215 44.6743 2 1402 Saltsage community. Phenology: flowering & fruiting. RM USFS 401995 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. s.n. Doris W. Hayes J. W. Roller 1952 11 20 325 U.S.A. Wyoming Lincoln Between Opal and Diamondville; ca 2 mi E of Diamondville on U.S. Hwy 30. -110.52861 41.7531 1 2103 Phenology: vegetative only. RM RM 32332 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 652 Elmer D. Merrill E. N. Wilcox 1901 6 18 169 U.S.A. Wyoming Sweetwater Point of Rocks. -108.7824 41.6869 3 1981 2012 Dry soil. Phenology: flowering. RM RM 274177 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 415 James T. Nichols 1962 6 8 159 U.S.A. Wyoming Washakie W of Worland, on the lower part of the Fifteenmile drainage area. Willwood formation. 5 1250 1310 Lowland area in association with greasewood on Willwood Formation in 5-9 inch precipitation zone. Phenology: flowering. RM RM 318962 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1794 Linda M. Barker 1978 5 31 151 U.S.A. Wyoming Washakie Bighorn Basin: Schuster Flats NE Quad. 1341 Saline upland range site. Native shrub. TESP2. Phenology: buds. RM RM 206565 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 9 Lowell E. Larsen 1947 6 1 152 U.S.A. Wyoming Sweetwater Rock Springs. -109.224 41.5831 5 1890 Lower ground. Fairly common, height up to 4 ft. Phenology: vegetative only. RM RM 600947 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5929 Robert D. Dorn 1995 6 6 157 U.S.A. Wyoming Hot Springs 11.5 mi NW of Kirby. -108.3814 43.8655 1 1463 Rocky clay slope with Opuntia and Platyschkuhria. Flowers yellow. Phenology: flowering & fruiting. RM RM 745425 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 25009 Sherel Goodrich 1995 6 22 173 U.S.A. Wyoming Sweetwater Ashley National Forest: Flaming Gorge National Recreation Area: ca 1 mi N of Utah. 1878 Eroding hills. Phenology: flowering & fruiting. RM RM 568543 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 8264 Thomas W. Nelson Jane P. Nelson 1986 6 26 177 U.S.A. Wyoming Sweetwater North side of I-80 at Baxter Road (Exit #111). -109.128 41.6127 1 1890 Grassland. Phenology: flowering & fruiting. RM RM 603002 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 14864 Walter Fertig 1994 6 14 165 U.S.A. Wyoming Sweetwater Great Divide Basin: S of Bitter Creek on County Road 19 on east side of Antelope Creek. -108.5136 41.4051 1 2134 2195 Dry reddish-brown clay flats and lower slopes of sandstone-shale-clay badlands ridges; Atriplex gardneri-Artemisia pedatifida-A. spinescens community. Phenology: flowering & fruiting. RM RM 645424 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 18200 Walter Fertig 1998 6 14 165 U.S.A. Wyoming swet Green River Basin: ridge at the junction of Sugarloaf Marsh Creek and a small tributary draw to the northeast (draining the Sugarloaf Basin), ca 5.3 mi E of Squaw Hollow and 3.5 mi E of Flaming Gorge Reservoir. -109.4553 41.165 1969 1981 South-facing slope of brownish sandy-clay soil with scattered brown sandstone-slate flakes; community of Atriplex confertifolia-Artemisia tridentata with Oryzopsis hymenoides, Elymus elymoides, Artemisia frigida, and Chrysothamnus nauseosus. Phenology: flowering & fruiting. RM RM 526862 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4157 Betsy E. Neely 1987 5 30 150 U.S.A. Colorado Moffat Dinosaur National Monument: East Fork Sand Canyon, W of the Billiard Table. 1676 Sandy soils of gentle N exposure in wash with Sarcobatus, Artemisia tridentata, Clematis and Senecio. Phenology: flowering. RM RM 47500 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3182 C. S. Crandall 1898 5 15 135 U.S.A. Colorado Mesa Palisades. Phenology: flowering. RM RM 13240 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. s.n. C. S. Crandall 1898 5 14 134 U.S.A. Colorado Mesa Palisades. 1448 Phenology: flowering & fruiting. RM RM 13516 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 419 Carl F. Baker F. S. Earle and S. M. Tracy 1898 7 8 189 U.S.A. Colorado Montezuma Mancos. 2134 Sage plains. Phenology: flowering. RM RM 155213 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 419 Carl F. Baker F. S. Earle and S. M. Tracy 1898 7 8 189 U.S.A. Colorado Montezuma Mancos. 2134 Sage plains. Phenology: flowering. RM RM 81868 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 655 Edwin B. Payson 1915 6 13 164 U.S.A. Colorado Montrose Near Montrose. 1768 Dry alkaline hill. Phenology: flowering & fruiting. RM USFS 484527 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. R-399 Felix E. Read 1937 7 13 194 U.S.A. Colorado Delta Gunnison National Forest: Smith Fork Creek. 1981 10% south slope, clay loam, with sage, rabbitbrush and others: dry open hillside. Phenology: flowering & fruiting. RM RM 12199 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2144 George E. Osterhout 1900 6 25 176 U.S.A. Colorado Garfield Rifle. Phenology: flowering & fruiting. RM RM 155211 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2627 George E. Osterhout 1902 6 10 161 U.S.A. Colorado Moffat N of Craig. Phenology: flowering & fruiting. RM RM 38853 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2627 George E. Osterhout 1902 6 10 161 U.S.A. Colorado Moffat N of Craig. Phenology: flowering. RM RM 155212 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4294 George E. Osterhout 1910 5 27 147 U.S.A. Colorado Mesa De Beque. -108.2148 39.3341 1508 Phenology: flowering & fruiting. RM USFS 484512 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. L-25 L. W. Larson 1936 7 27 209 U.S.A. Colorado Rio Blanco 10 mi NW of Rangely. Shadscale. RM USFS 484525 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 12L Larson 1936 7 18 200 U.S.A. Colorado Moffat 1 mi S of Lily Park. Shadscale type. RM USFS 484526 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1687 Ralph K. Gierisch H. E. Schwann 1952 8 27 240 U.S.A. Colorado Rio Blanco 12 mi W of Meeker. 1829 10% west slope, clay loam, woodland-saltbush type. Phenology: flowering & fruiting. RM RM 368681 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 23412 Stanley L. Welsh B. T. Welsh and R. Kass 1985 5 12 132 U.S.A. Colorado Mesa Ca 5 mi SE of Clifton. -108.4133 39.0415 1 1451 Mancos Shale, saltbush-galleta community. Phenology: flowering. RM USFS 484524 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. s.n. V. H. Reid Glen L. Ranck 1972 6 7 159 U.S.A. Colorado Mesa Badger Wash Experimental Area. 1524 Salt desert shrub. Phenology: fruiting. RM RM 211573 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3768 William A. Weber 1948 5 21 142 U.S.A. Colorado Mesa Colorado National Monument: 3 mi S of Fruita, W of highway approach to Monument. 466 Low rocky hogbacks beneath northwest escarpment. Phenology: flowering & fruiting. RM RM 229275 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 7474 William A. Weber 1952 5 30 151 U.S.A. Colorado Montrose Hills N of highway, 7 mi E of Montrose. 1829 Gypsum hills. Phenology: flowering & fruiting. RM RM 789968 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1604 Beth Ward 1996 6 27 179 U.S.A. Wyoming Sweetwater South-central Wyoming: Washakie Basin: between Cherokee Basin and Cherokee Rim, ca 14.5 air mi W of Baggs. 1935 1987 Sandy slope. Phenology: flowering. RM RM 789969 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1706 Beth Ward 1996 6 28 180 U.S.A. Wyoming Sweetwater South-central Wyoming: Washakie Basin: Grindstone Wash drainage and base of Prehistoric Rim along its northeastern face, ca 25 air mi WNW of Baggs. 1954 1978 Clay/sandy soil. Phenology: flowering. RM RM 789970 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1750 Beth Ward 1996 6 28 180 U.S.A. Wyoming Sweetwater South-central Wyoming: Washakie Basin: southeast side of butte overlooking Sand Creek, ca 2 air mi W of McPherson Springs; ca 17.5 air mi WNW of Baggs. 1987 2081 Sandy/gumbo slopes. Phenology: flowering. RM RM 789971 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1829 Beth Ward 1996 7 4 186 U.S.A. Wyoming Sweetwater South-central Wyoming: Green River Basin: northeastern slope of Flattop Mountain, ca 2.5 air mi W of Wyo Hwy 191; ca 15 air mi SSW of Rock Springs. 1990 2054 Sagebrush flat. Phenology: flowering. RM RM 789972 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1851 Beth Ward 1996 7 4 186 U.S.A. Wyoming Sweetwater South-central Wyoming: Green River Basin: Slippery Jim Bottom on Flaming Gorge Reservoir, ca 1 air mi N of Little Firehole Canyon; ca 14 air mi SSW of Rock Springs. -109.4166 41.42 1841 1871 Hillside above bottom. Phenology: flowering. RM RM 789973 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 1899 Beth Ward 1996 7 4 186 U.S.A. Wyoming Sweetwater South-central Wyoming: Green River Basin: adjacent to and mainly S of the confluence of Middle Marsh Creek and Flaming Gorge Reservoir, ca 36 air mi SSW of Rock Springs. 1832 1868 Hillside above creek and reservoir. Phenology: flowering. RM RM 789974 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2224 Beth Ward 1996 7 10 192 U.S.A. Wyoming Sweetwater [location and coordinates withheld] 1972 1996 Hillsides adjacent to creek. Phenology: vegetative only. RM RM 789967 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 697 Beth Ward 1996 6 16 168 U.S.A. Wyoming Carbon South-central Wyoming: Washakie Basin: Tree Draw leading from Hangout Ridge W to Hangout Wash, ca 2-2.5 air mi from the confluence of Hangout Wash and Sand Creek; ca 12 air mi WNW of Baggs. 1908 2018 Wash terrace. Phenology: flowering. RM RM 798360 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4066 Beth Ward 1997 5 26 146 U.S.A. Wyoming Sweetwater South-Central Wyoming:: Rock Springs Uplift: Hills and draws sloping down to the W towards Killpecker Creek; ca 1 air mi E of Killer Creek; ca 3.0 air mi N of Rock Springs. -109.2246 41.6277 1945 1963 Sandy hills with rock and clay outcrops; greasewood and spiny hopsafe. Phenology: buds. RM RM 798359 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4349 Beth Ward 1997 5 30 150 U.S.A. Wyoming Sweetwater South-Central Wyoming: Green River Basin: greasewood flats and cottonwoods adjacent to Big Island Wash and Green River, ca 26 air mi WNW of Rock Springs. -109.7182 41.7482 1890 1896 Greasewood flats. Phenology: flowering. RM RM 798358 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4702 Beth Ward 1997 6 7 158 U.S.A. Wyoming Sweetwater [location and coordinates withheld] 2051 2106 Sagebrush flat. Phenology: buds. RM RM 798357 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4940 Beth Ward 1997 6 9 160 U.S.A. Wyoming Sweetwater South-Central Wyoming: low buttes and flats, ca 1 air mi N of Canyon Creek; ca 0.5 air mi W of Wyo Hwy 430; ca 42 air mi SSE of Rock Springs. -108.8052 41.0351 2189 2234 Sagebrush slope. Phenology: flowering & fruiting. RM RM 798356 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5270 Beth Ward 1997 6 14 165 U.S.A. Wyoming Sweetwater South-Central Wyoming: Green River Basin: slopes and draws draining from the west directly into Flaming Gorge Reservoir, ca 2 air mi SW of South Chimney Rock; ca 20.5 air mi SSW of Rock Springs. -109.4553 41.3381 1853 1884 South-facing slate, clay slope. Phenology: flowering. RM RM 798355 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5346 Beth Ward 1997 6 14 165 U.S.A. Wyoming Sweetwater [location and coordinates withheld] 2064 2160 Clay, shale slope. Phenology: flowering. RM RM 798354 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5617 Beth Ward 1997 6 17 168 U.S.A. Wyoming Sweetwater South-Central Wyoming: slopes and draws ca 1 air mi S of Powder Rim draining to West Fork Cherokee Creek, ca 9 air mi E of Powder Mountain; ca 20 air mi W of Baggs. -108.0589 41.0405 2018 2085 Clay/sand flat, no sagebrush. Phenology: flowering. RM RM 798353 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 6127 Beth Ward 1997 6 24 175 U.S.A. Wyoming Sweetwater South-Central Wyoming: Green River Basin: flats and badlands slopes and draws draining to Starvation Wash, ca 3 air mi NE of Blue Rim; ca 12 air mi E of the Green River; ca 16 air mi SSW of Farson. -109.5637 41.8822 1990 2044 Sandy/clay flat. Phenology: flowering. RM RM 798352 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 6170 Beth Ward 1997 6 24 175 U.S.A. Wyoming Sweetwater South-Central Wyoming: Green River Basin: east-facing draws and slopes and butte top of part the Blue Rim, ca 6 air mi NE of the Green River; ca 3 air mi NW of Alkali Creek; ca 19.5 air mi NW of Rock Springs. -109.5702 41.7463 2048 2091 Rocky butte top. Phenology: flowering. RM 798351 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 6200 Beth Ward 1997 6 24 175 U.S.A. Wyoming Sweetwater South-Central Wyoming: Green River Basin: draws and slopes draining to Alkali Creek, ca 5 air mi E of the Green River; ca 1 air mi W of Alkali Creek; ca 18 air mi WNW of Rock Springs. -109.5702 41.687 1969 2033 Sandy draw, sagebrush and Tetradymia. Phenology: flowering. RM RM 798350 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 6355 Beth Ward 1997 6 26 177 U.S.A. Wyoming Sweetwater South-Central Wyoming: draws and slopes draining S to Red Creek, ca 0.5 air mi N of Red Creek; ca 5 air mi NW of Pine Mountain; ca 34.5 air mi SSE of Rock Springs. -109.0729 41.0784 2225 2332 South-facing badlands slope. Phenology: flowering & fruiting. RM RM 930938 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 14125 B. E. Nelson 1987 6 30 181 U.S.A. Wyoming Park Bighorn Basin: along West Branch Whistle Creek, ca 11 air mi SE of Powell. -108.6833 44.60056 1371 Sandy flats along creek. RM RM 930937 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 14860 B. E. Nelson Erik Nelson 1988 5 27 148 U.S.A. Wyoming Washakie Bighorn Basin: along South Fork Fifteenmile Creek, ca 14 air mi WNW of Worland. -108.2172 44.0736 4400 Clay flats with Atriplex gardneri and Artemisia spinescens. RM RM 930936 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 14899 B. E. Nelson Erik Nelson 1988 5 27 148 U.S.A. Wyoming Washakie Bighorn Basin: Middle Fork Fifteenmile Creek near end of Paradise Alley, ca 24.5 air mi WNW of Worland. -108.4389 44.0878 1463 Small sand dune with Grayia and Artemisia. RM RM 930935 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 14969 B. E. Nelson Erik Nelson 1988 5 29 150 U.S.A. Wyoming Big Horn Bighorn Basin: along Elk Creek on Dorsey Creek Road, ca 16 air mi WSW of Basin, ca 9 air mi SSW of Otto. -108.3219 44.27639 4400 Sandy clay slopes in badlands. RM RM 930934 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 15307 B. E. Nelson Erik Nelson 1988 6 5 157 U.S.A. Wyoming Big Horn Bighorn 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. -108.56278 44.3786 1478 Reservoir dam and banks. RM RM 930941 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 7619 B. E. Nelson 1981 6 7 158 U.S.A. Wyoming Big Horn Bighorn Basin: S of Fivemile Creek, ca 12 air mi WSW of Manderson; ca 22 air mi SW of Basin. -108.1857 44.2194 1 1402 Sandstone breaks and slopes below badlands. RM RM 930940 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 7702 B. E. Nelson 1981 6 7 158 U.S.A. Wyoming Big Horn Bighorn Basin: Fox Mountain, ca 9 air mi E of Greybull. -107.8695 44.4939 1 1371 Sandy clay soil on the sides of the butte. RM RM 930939 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 7754 B. E. Nelson 1981 6 7 158 U.S.A. Wyoming Big Horn Bighorn Basin: Potato Ridge, ca 14 air mi ESE of Greybull. -107.79389 44.4364 1 1493 Shaly sagebrush-saltsage slopes. RM RM 387650 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4127 June Haines 1985 6 11 162 U.S.A. Wyoming Fremont Wind River Basin: west side of Ocean Lake; Longpoint Peninsula. -108.6264 43.1785 2 1595 1603 Shaley sagebrush slopes and hilltops. Phenology: flowering & fruiting. RM RM 930933 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 9629 Keith H. Dueholm Ronald L. Hartman 1980 5 28 149 U.S.A. Wyoming Big Horn Bighorn Basin: along U.S. Hwy 14, ca 0.5 mi E of Greybull. -108.04333 44.4975 1 1219 Sandstone outcrops, sandy plain along highway; plain. RM RM 387651 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 19940 Ronald L. Hartman June Haines 1985 5 28 148 U.S.A. Wyoming Fremont Wind River Basin: Cottonwood Creek, 7 air mi NE of Lysite. -107.6039 43.3494 2 1646 1707 Sandy ridge, sandstone outcrops, eroded slopes and creek bottoms. Phenology: buds. RM RM 600947 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5929 Robert D. Dorn 1995 6 6 157 U.S.A. Wyoming Hot Springs 11.5 mi NW of Kirby. -108.3814 43.8655 1 1463 Rocky clay slope with Opuntia and Platyschkuhria. Phenology: flowering & fruiting. RM RM 632198 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 557 Thomas Cramer 1994 6 14 165 U.S.A. Wyoming Lincoln Green River Basin: east side of Upper Fontenelle Reservoir, ca 9 air mi S of La Barge. -110.1578 42.1336 1981 Sagebrush flats and open reservoir edge. Phenology: flowering. RM RM 638060 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 6669 Thomas Cramer Jane T. Kellett 1995 6 21 172 U.S.A. Wyoming Lincoln Green River Basin: Slate Creek Butte, ca 5 air mi SW of Fontenelle Dam. -110.0873 41.9711 1 2027 2057 Clay badlands hillside. Phenology: flowering. RM RM 638059 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 7432 Thomas Cramer 1995 7 7 188 U.S.A. Wyoming Sublette Green River Basin: ca 11.5 air mi SW of Boulder. -109.881 42.6439 1 2195 2225 Steep eroded clay slope mesa sides. Phenology: flowering. RM RM 638058 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 7547 Thomas Cramer 1995 7 8 189 U.S.A. Wyoming Sublette Green River Basin: ca 9.5 air mi E of La Barge. -110.0241 42.2863 2195 2219 Cobblestone sagebrush mesa top. Phenology: flowering. RM RM 638091 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 8322b Thomas Cramer Jane T. Kellett 1995 7 18 199 U.S.A. Wyoming Sweetwater Green River Basin: ca 5.5 air mi E of Fontenelle Dam. -109.952 42.031 1990 Sand dune sagebrush hills with Grayia and Tetradymia. Phenology: flowering & fruiting. RM RM 938683 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 71063 B. E. Nelson Emily Elliott, Brian Elliott 2007 5 22 142 U.S.A. Montana Carbon Bighorn Basin: along Grove Creek Road, ca 2.5 air mi W of Clarks Fork Yellowstone River, ca 5 air mi SW of Belfry. -109.0832 45.0848 1262 1304 Clay slopes and ridges with sandstone outcrop, with sagebrush and saltbush. Phenology: flowering & fruiting. RM RM 818041 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 23221 Walter Fertig 2007 6 3 154 U.S.A. Wyoming Sweetwater Green River Basin: badlands ca 0.2 mi E of County Road 1 at mile post 9 and E of tributary wash of Buckboard Wash, ca 8 air mi W of Flaming Gorge Reservoir and 3 mi W of Black Mountain. -109.7625 41.2181 1987 Rocky terrace within wash bottom and on lowermost bank; vegetation cover 20%; community of scattered Artemisia tridentata var. wyomingensis, Chrysothamnus viscidiflorus, and Poa secunda. Scattered, spiny shrubs to 2 ft tall. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 639 Amy J. Roderick 1997 6 14 165 U.S.A. Wyoming Carbon [location and coordinates withheld] 2057 2073 Sagebrush draws and barren sandy grasslands with hills of gypsum. Phenology: flowering. RM USFS 898215 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 656 Michael K. Kirkpatrick 2010 5 27 147 U.S.A. Colorado Mesa Black Mountain, W of the De Beque Cutoff Road, ca 8-9 air mi SSE of De Beque. -108.1588 39.2257 1670 2012 Juniper woodland with scattered sagebrush on eastern flanks of mountain below sandstone and shale outcrops. Phenology: flowering. RM USFS 484528 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 411 Jack E. Schmautz 1963 7 30 211 U.S.A. Montana Carbon Custer National Forest: Gypsum Creek. 914 Southeast 5% slope; on heavy gravelly clay; desert shrub with Artemesia spinescens, Atriplex, Chrysothamnus. Scattered; 2 ft tall. Phenology: vegetative only. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4805 Michael K. Kirkpatrick 2011 5 17 137 U.S.A. Colorado Mesa Colorado River Valley: unnamed side canyon E of De Beque Canyon, N of Kimbell Mesa, ca 21 air mi ENE of Grand Junction. -108.2396 39.27 1570 1585 Clay slopes and badlands. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5090 Michael K. Kirkpatrick 2011 5 24 144 U.S.A. Colorado Mesa Unnamed mesa N of Plateau Creek, ca 6 air mi E of Colo Hwy 65 at I-70 and ca 5 air mi W of Molina. -108.1667 39.1926 1621 1725 Clay slopes and badlands with greasewood and shadscale. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5297 Michael K. Kirkpatrick 2011 5 30 150 U.S.A. Colorado Mesa Colorado River Valley: canyon SE of De Beque Reservoir, ca 1 air mi NNE of De Beque off of the W.50 Road. -108.213 39.3407 1539 1570 Ruderal meadow and roadside in bottom of canyon. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5467 Michael K. Kirkpatrick 2011 6 1 152 U.S.A. Colorado Garfield Colorado River Valley: W of the mouth of Smith Gulch, N of I-70 along a frontage road, ca 5 air mi SW of Parachute. -108.1373 39.3986 1615 1646 Shrink-swell clay slopes dominated by Atriplex, Sarcobatus, and Stanleya. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 7519 Lori E. Brummer 2012 5 13 134 U.S.A. Colorado Montrose Uncompahgre Basin: adobe hills N of Cedar Creek off Kinnikin Road, ca 7.5 air mi SE of Montrose. -107.75956 38.41648 1957 2073 Adobe hillside. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5476 Joshua J. Irwin 2011 6 23 174 U.S.A Idaho Custer Salmon River: benchland on the south side of the Salmon River between Gerry Gulch and Shep Creek, 10.4 air mi NNE of Challis. -114.12452 44.63608 30 1495 &lt;25 plants estimated in xeric soil within desert scrub vegetation, no slope, trachyandesite geology. Phenology: flowering. RM USFS Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 5467 Michael K. Kirkpatrick 2011 6 1 152 U.S.A. Colorado Garfield Colorado River Valley: W of the mouth of Smith Gulch, N of I-70 along a frontage road, ca 5 air mi SW of Parachute. -108.1373 39.3986 1615 1646 Shrink-swell clay slopes dominated by Atriplex, Sarcobatus, and Stanleya. Phenology: flowering & fruiting. RM RM 914798 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 24791 Walter Fertig 2009 6 28 179 U.S.A. Wyoming Sweetwater Green River Basin: ca 0.8 mi NW of Meadow Springs Wash, 1.1 mi SE of Wildcat Butte, 15 mi ENE of Lyman. 2064 Wyoming big sagebrush grassland on gravelly clay soil; with scattered cushion plant openings with Eremogone hookeri, Eriogonum caespitosum, Stenotus acaulis, Achnatherum hymenoides. Vegetative cover 40-50%. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 76 Lori E. Brummer B. E. Nelson 2010 6 3 154 U.S.A. Colorado Montrose Gunnison Gorge National Conservation Area: Eagle Valley Trailhead in Adobe Hills about 5.5 air mi E of Olathe. -107.8843 38.6042 1756 1774 Adobe hills. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 11 Michael K. Kirkpatrick B. E. Nelson, Lori E. Brummer 2010 5 5 125 U.S.A. Colorado Delta Grand Mesa: foothills at west end of the mesa at the end of Wells Gulch Road in upper Wells Gulch, ca 11.5 air mi NW of Delta. -108.2162 38.8646 1890 2067 Pinyon/juniper woodland and mixed shrub community on ridges and slopes. Phenology: buds. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2592 Lori E. Brummer 2011 5 16 136 U.S.A. Colorado Delta Gunnison Gorge National Conservation Area: Smith Mountain River Overlook, ca 8 air mi ENE of Delta. -107.932 38.7732 1707 Sandstone mesa on adobe hillside; desert grassland and shrub community. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2683 Lori E. Brummer 2011 5 17 137 U.S.A. Colorado Delta Uncompahgre Plateau: Escalante Canyon, McCarthy Trail, ca 11.5 air mi W of Delta. -108.2674 38.738 1509 1859 Juniper grasslands on clay hillsides with sandstone mesa tops. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2831 Lori E. Brummer 2011 5 21 141 U.S.A. Colorado Delta BLM Lands near Delta, lower slopes of Grand Mesa, ca 12.5 air mi NW of Delta. -108.2544 38.8518 1786 1829 Desert shrub and grasslands on adobe mesas and hills with basalt boulders. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 2872 Lori E. Brummer 2011 5 21 141 U.S.A. Colorado Mesa Kannah Creek Road, ca 3.5 road mi E of U.S. Hwy 50, mesas and hills of lower Grand Mesa. -108.3318 38.9299 1564 1640 Desert shrub and grasslands on adobe mesa with basalt boulders. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3029 Lori E. Brummer 2011 5 23 143 U.S.A. Colorado Montrose Uncompahgre Plateau: BLM lands near Colona, off BLM Road 3515, ca 8.5 mi S of Montrose. -107.8574 38.3729 1935 1993 Desert grasslands with scattered juniper on adobe hills. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3225 Lori E. Brummer 2011 5 27 147 U.S.A. Colorado Mesa Plateau Valley: lower north slopes of Indian Peak, ca 25 air mi NE of Grand Junction. -108.1284 39.2072 1597 1719 Scattered juniper and desert grassland on clay hills with sandstone outcrops. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3465 Lori E. Brummer 2011 5 31 151 U.S.A. Colorado Montrose Uncompahgre Basin: BLM lands N of Buckhorn Road, ca 10-11.5 air mi SE of Montrose. -107.7566 38.3763 2033 2143 Desert shrub and grassland on adobe hills. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3554 Lori E. Brummer 2011 6 2 153 U.S.A. Colorado Delta McDonald Mesa: adobe hills N of McDonald Creek, ca 24 air mi ENE of Delta. -107.6144 38.7782 1807 1914 Adobe hills and slopes. Phenology: flowering. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3593 Lori E. Brummer 2011 6 2 153 U.S.A. Colorado Delta Grand Mesa: Petrie Mesa, ca 7 air mi NNW of Delta. -108.0996 38.83269 1737 1914 Basalt covered mesa with adobe slopes; desert grassland. Phenology: flowering & fruiting. RM RM Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3836 Lori E. Brummer 2011 6 11 162 U.S.A. Colorado Delta Uncompahgre Basin: Peach Valley, north end of Candy Lane, ca 12 air mi N of Montrose. -107.9017 38.6344 1701 1731 Adobe badlands. Phenology: flowering & fruiting. RM RM 634660 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 35292 B. E. Nelson C. H. Refsdal and Laura Welp 1995 6 20 171 U.S.A. Wyoming Sweetwater Basins and Mountains of Southwest Wyoming: Flaming Gorge National Recreation Area: small cove on east side ca 1.5 mi below Blacks Fork, ca 4 air mi NE of Buckboard Crossing; ca 17.5 air mi S of Green River. -109.5308 41.2811 1 1841 1917 Shaly benches and slopes, sandstone outcrops, cobblestone ridgetops, and sandy areas with scattered desert shrubs and greasewood bottom. Phenology: flowering & fruiting. RM RM 634659 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 35349 B. E. Nelson C. H. Refsdal and Laura Welp 1995 6 20 171 U.S.A. Wyoming Sweetwater Basins and Mountains of Southwest Wyoming: Flaming Gorge National Recreation Area: canyon N of North Chimney Rock and E of the Green River, ca 11 air mi S of Green River. -109.4167 41.3808 2 1841 2100 Steep slopes with areas of thin talus vegetated with areas of sagebrush, desert shrubs, or juniper. Phenology: flowering & fruiting. RM RM 634658 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 35423a B. E. Nelson C. H. Refsdal and Laura Welp 1995 6 20 171 U.S.A. Wyoming Sweetwater Basins and Mountains of Southwest Wyoming: Flaming Gorge National Recreation Area: west side of Flaming Gorge Reservoir between Firehole Canyon and Sage Creek Basin, ca 13 air mi S of Green River. -109.455 41.3383 1 1841 1902 Sandy clay slopes with scattered rock, dominated by desert shrubs. Phenology: flowering & fruiting. RM RM 634657 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 35496 B. E. Nelson C. H. Refsdal and Laura Welp 1995 6 20 171 U.S.A. Wyoming Sweetwater Basins and Mountains of Southwest Wyoming: Flaming Gorge National Recreation Area: south peninsula at the confluence of Blacks Fork and Green River, ca 17 air mi S of Green River. -109.55 41.2814 1 1865 1909 Sandy slopes dominated by desert shrubs. Phenology: flowering & fruiting. RM RM 634656 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 36083 B. E. Nelson C. H. Refsdal 1995 7 3 184 U.S.A. Wyoming Lincoln Basins and Mountains of Southwest Wyoming: benchland between Zieglers Wash and Dry Muddy Creek ca 9 air mi WNW of Granger; ca 24.5 air mi SE of Kemmerer. -110.1239 41.6431 1969 1981 Salt desert shrub on soft clays and clay-chert ridgetops, sagebrush bottoms and sparsely vegetated slopes, some areas of gray-green shale. Phenology: flowering & fruiting. RM RM 634655 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 36195 B. E. Nelson C. H. Refsdal 1995 7 3 184 U.S.A. Wyoming Lincoln Basins and Mountains of Southwest Wyoming: benchland between Zieglers Wash and Dry Muddy Creek ca 13 air mi WNW of Granger; ca 22 air mi SE of Kemmerer. -110.2008 41.6711 1 2009 2036 Desert shrubs on vegetated low sand dunes, clay slopes, conglomerate ridges, and sparsely vegetated slopes. Phenology: flowering & fruiting. RM RM 634654 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 36365 B. E. Nelson C. H. Refsdal 1995 7 7 188 U.S.A. Wyoming Uinta Basins and Mountains of Southwest Wyoming: Bridger Butte, ca 5.5 air mi WSW of Fort Bridger; ca 25.5 air mi E of Evanston. -110.4772 41.279 1 2225 2286 Badland slopes with bentonite and cobblestones, with patches of juniper and sagebrush on the flatter areas. Phenology: flowering & fruiting. RM RM 634664 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 3890 C. H. Refsdal 1995 6 10 161 U.S.A. Wyoming Sweetwater Basins and Mountains of Southwest Wyoming: ca 19 air mi SW of Green River; 12.6 mi W from Wyo Hwy 530 on gravel access road. -109.8483 41.3284 1 1951 1975 Badlands, chert, dry clays with sand. Phenology: flowering & fruiting. RM RM 961344 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 195 Patricia P. Douglas Nancy E. Hastings 2000 5 20 141 U.S.A. Wyoming Big Horn Lovell Training Area: hogback and slope ca 4.2 km SW of Levell Peak (1573 m), ca 2.0 km E of U.S. Hwy 310. 1280 Northwest to west-facing (up to 40 deg) Wyoming big sagebrush; Oceanet-Rock Outcrop complex; sandy clay to silty clay with pebbles to cobbles and rock outcrops; with Artemisia tridentata, A. frigida, A. spinescens, Grayia spinosa, Sarcobatus vermiculatus, Atriplex gardneri, Rhus trilobata, Psoralidium lanceolatum, Opuntia polyacantha. Scattered; ascending to erect shrub; 4 dm tall; disk yellow. Phenology: flowering & fruiting. RM RM 961345 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 230 Patricia P. Douglas Nancy E. Hastings 2000 5 21 142 U.S.A. Wyoming Big Horn Lovell Training Area: drainage, west end of area ca 4.4 km SW of Levell Peak (1573 m), ca 2.2 km E of U.S. Hwy 310. 1280 1305 Level to 20 deg; greasewood desert shrubland/Wyoming big sagebrush; badland; silty clay to sandy clay loam; Sarcobatus vermiculatus, Artemisia tridentata, Tamarix chinensis, Schoenocrambe linifolia, Chorispora tenella, Camissonia scapoidea. Infrequent; ascending shrub; 3 dm tall; disk yellow. Phenology: flowering & fruiting. RM RM 634663 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4421 C. H. Refsdal 1995 6 27 178 U.S.A. Wyoming Sweetwater [location and coordinates withheld] 1908 1939 Sandy plateaus and clay bottoms, rolling hills with salt desert shrub. Phenology: flowering & fruiting. RM RM 634662 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4616 C. H. Refsdal 1995 6 30 181 U.S.A. Wyoming Lincoln Basins and Mountains of Southwest Wyoming: ca 12 air mi SE of Opal; 18.3 mi E of junction U.S. Hwy 30/Wyo Hwy 240. -110.0647 41.6847 1 1951 1981 Semi-barren desert slopes, shale ridgetops and slopes, some vegetated sand dunes. Phenology: flowering & fruiting. RM RM 634661 Tetradymia spinosa physical specimen Asteraceae Tetradymia spinosa Hook. and Arn. 4698 C. H. Refsdal 1995 6 30 181 U.S.A. Wyoming Lincoln Basins and Mountains of Southwest Wyoming: ca 10 air mi ENE of Opal. -110.2681 41.9158 2042 2045 Gravelly clay soils, semi-barren sagebrush slopes, north aspect and ridgetop, some sandy bottoms. Phenology: flowering & fruiting. RMT RM 63964 Tetradymia spinosa var. longispina var. nov. physical specimen Asteraceae Tetradymia spinosa var. longispina M. E. Jones Isotype for <i>Tetradymia</i> <i>spinosa</i> Hook. and Arn. var. <i>longispina</i> M. E. Jones. Proc. California Acad. Sci. II. 5: 698. 1895. 5110 Marcus E. Jones 1894 4 26 116 U.S.A. Utah Washington St. George. [County not given on label.] 914 Phenology: flowering. Type Specimen. 3600 3,1,0 true