Aceraceae GH: 01870781 Acer glabrum Torrey USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2164 1938-5-26
Asteraceae GH: 01234500 Artemisia spinescens D. C. Eaton USA: Wyoming 2 miles southeast of Green River R. C. Rollins 2251 1938-6-2
GH: 02021408 Cirsium neomexicanum A. Gray USA: Colorado in the canyon of Plateau Creek, 15 miles nor... R. C. Rollins 2186 1938-5-27
GH: 02142656 Crepis modocensis Greene USA: Wyoming Flat Iron Butte, southern Lincoln County R. C. Rollins 2357 1938-6-16
GH: 02142756 Crepis occidentalis costata (A. Gray) Babcock & Stebbins USA: Wyoming Flat Iron Butte, southern Lincoln County R. C. Rollins 2356 1938-6-16
GH: 02348456 Erigeron flettii G. N. Jones USA: Washington [data not captured] R. C. Rollins 2647 1938-8-4
GH: 01835785 Malacothrix sonchoides (Nuttall) Torrey & A. Gray USA: Colorado 2 miles south of Delta R. C. Rollins 2140 1938-5-25
Boraginaceae GH: 02027779 Hackelia patens (Nuttall) I. M. Johnston USA: Wyoming Flat Iron Butte, southern Lincoln County R. C. Rollins 2365 1938-6-16
GH: 02027780 Hackelia patens (Nuttall) I. M. Johnston USA: Wyoming 20 miles east of Evanston R. C. Rollins 2331 1938-6-14
GH: 01996060 Lithospermum incisum Lehmann USA: Colorado near Mesa R. C. Rollins 2199 1938-5-27
GH: 02058005 Mertensia lanceolata (Pursh) de Candolle USA: Colorado 3 miles north of Sargents R. C. Rollins 2085 1938-5-21
GH: 02058674 Mertensia oblongifolia (Nuttall) G. Don USA: Wyoming foothills of the Uinta Mountains, 15 miles s... R. C. Rollins 2378 1938-6-17
GH: 02059729 Oreocarya bakeri Greene USA: Colorado near Meeker R. C. Rollins 2223 1938-5-28
GH: 02059772 Oreocarya caespitosa A. Nelson USA: Wyoming 3 miles west of Fort Bridger R. C. Rollins 2234 1938-5-31
GH: 02059771 Oreocarya caespitosa A. Nelson USA: Wyoming near Big Muddy Creek, Fort Bridger-Evanston R. C. Rollins 2328 1938-6-14
GH: 02059770 Oreocarya caespitosa A. Nelson USA: Wyoming 2 miles southwest of Green River R. C. Rollins 2257 1938-6-2
GH: 02059858 Oreocarya cinerea Greene USA: Colorado 11 miles south of Pueblo R. C. Rollins 2056 1938-5-19
GH: 02060290 Oreocarya flava A. Nelson USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2177 1938-5-26
GH: 02060369 Oreocarya flava A. Nelson USA: Wyoming 5 miles north of Saratoga R. C. Rollins 2393 1938-6-26
GH: 02060368 Oreocarya flava A. Nelson USA: Wyoming 5 miles north of Saratoga R. C. Rollins 2394 1938-6-26
GH: 02060410 Oreocarya flavoculata A. Nelson USA: Colorado 10 miles north of Mesa R. C. Rollins 2192 1938-5-27
GH: 02060409 Oreocarya flavoculata A. Nelson USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2178 1938-5-26
GH: 02060407 Oreocarya flavoculata A. Nelson USA: Colorado 10 miles east of Sapinero R. C. Rollins 2107 1938-5-23
GH: 02060405 Oreocarya flavoculata A. Nelson USA: Colorado 2 miles northeast of Cedaredge R. C. Rollins 2149 1938-5-25
GH: 02060523 Oreocarya flavoculata A. Nelson USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2280 1938-6-3
GH: 02060548 Oreocarya flavoculata A. Nelson USA: Wyoming 20 miles east of Evanston R. C. Rollins 2334 1938-6-14
GH: 02060890 Oreocarya longiflora A. Nelson USA: Colorado canyon of Plateau Creek, 15 miles northeast ... R. C. Rollins 2181 1938-5-27
GH: 02061143 Oreocarya sericea (A. Gray) Greene USA: Wyoming Flat Iron Butte, southern Lincoln County. R. C. Rollins 2355 1938-6-16
GH: 02061142 Oreocarya sericea (A. Gray) Greene USA: Wyoming 3 miles west of Fort Bridger R. C. Rollins 2233 1938-5-31
GH: 02061141 Oreocarya sericea (A. Gray) Greene USA: Wyoming 1 mile south of Green River R. C. Rollins 2243 1938-6-2
Brassicaceae GH: 00309969 Arabis crandallii B. L. Robinson USA: Colorado 6 miles east of Gunnison R. C. Rollins 2093 1938-5-22
GH: 00018663 Arabis gunnisoniana Rollins USA: Colorado Barren rocky knoll near Saguache Creek, 6 mi... R. C. Rollins 2090 1938-5-21
GH: 00096069 Arabis gunnisoniana Rollins USA: Colorado Gunnison: Barren Rocky Knoll near Saguache C... R. C. Rollins 2090 1938-5-21
GH: 00056264 Arabis gunnisoniana Rollins USA: Colorado Barren rocky knoll near Saguache Creek, 6 mi... R. C. Rollins 2090 1938-5-21
GH: 00960653 Arabis hirsuta pycnocarpa (M. Hopkins) Rollins USA: Utah near Sheep Creek, 12 miles southwest of Mani... R. C. Rollins 2267 1938-6-3
GH: 00309969 Arabis pallidifolia Rollins USA: Colorado 6 miles east of Gunnison R. C. Rollins 2093 1938-5-22
GH: 01153802 Barbarea orthoceras Ledebour USA: Wyoming foothills of Uinta Mountains, 15 miles south... R. C. Rollins 2933 1938-6-17
GH: 01181586 Boechera burkii (Porter) Al-Shehbaz USA: Pennsylvania near the Juniata River, 3 miles east of Ever... R. C. Rollins 2039 1938-5-15
GH: 01181588 Boechera burkii (Porter) Al-Shehbaz USA: Pennsylvania near Tuniata River, 3 miles east of Everett R. C. Rollins 2039 1938-5-15
GH: 01181754 Boechera cobrensis (M. E. Jones) Dorn USA: Wyoming near Black's Fork River, 3 miles north of Ly... R. C. Rollins 2287 1938-6-6
GH: 01153811 Boechera crandallii (Robinson) W. A. Weber USA: Colorado 5 miles east of Parlin R. C. Rollins 2091 1938-5-21
GH: 01153813 Boechera crandallii (Robinson) W. A. Weber USA: Colorado 1 mile east of Sapinero R. C. Rollins 2111 1938-5-23
GH: 01153828 Boechera demissa (Greene) W. A. Weber USA: Colorado near Saguache Creek, 6 miles east of Gunniso... R. C. Rollins 2089 1938-5-21
GH: 01153829 Boechera demissa (Greene) W. A. Weber USA: Colorado near Sargents R. C. Rollins 2086 1938-5-21
GH: 01153833 Boechera demissa (Greene) W. A. Weber USA: Colorado 5 miles north of Sargents R. C. Rollins 2082 1938-5-21
GH: 01153834 Boechera demissa (Greene) W. A. Weber USA: Colorado 4 miles east of Gunnison R. C. Rollins 2099 1938-5-22
GH: 01153839 Boechera demissa languida (Rollins) Dorn USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2279 1938-6-3
GH: 01153861 Boechera demissa russeola (Rollins) N. H. Holmgren USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2272 1938-6-3
GH: 01153869 Boechera divaricarpa (A. Nelson) A. Löve & D. Löve USA: Colorado 5 miles southwest of Craig R. C. Rollins 2227 1938-5-28
GH: 01153958 Boechera fendleri spatifolia (Rydberg) W. A. Weber USA: Colorado 1 mile east of Sapinero R. C. Rollins 2112 1938-5-23
GH: 01153961 Boechera fendleri spatifolia (Rydberg) W. A. Weber USA: Utah near Sheep Creek, 12 miles southwest of Mani... R. C. Rollins 2266 1938-6-3
GH: 00932371 Boechera fendleri spatifolia (Rydberg) W. A. Weber USA: Wyoming 3 miles south of Lonetree R. C. Rollins 2303 1938-6-7
GH: 01153963 Boechera formosa (Greene) Windham & Al-Shehbaz USA: Colorado 10 miles south of Montrose R. C. Rollins 2133 1938-5-24
GH: 00018663 Boechera gunnisoniana (Rollins) W. A. Weber USA: Colorado Barren rocky knoll near Saguache Creek, 6 mi... R. C. Rollins 2090 1938-5-21
GH: 01153979 Boechera gunnisoniana (Rollins) W. A. Weber USA: Colorado 4 miles east of Gunnison R. C. Rollins 2096 1938-5-22
GH: 01153999 Boechera holboelii pinetorum (Tidestrom) Dorn USA: Colorado 6 miles east of Gunnison R. C. Rollins 2095 1938-5-22
GH: 00932856 Boechera howellii (S. Watson) Windham & Al-Shehbaz USA: California North Ridges. among the lava boulders near t... R. C. Rollins 11373 1938-7-28
GH: 00946114 Boechera languida (Rollins) Windham & Al-Shehbaz USA: Wyoming 2 miles southeast of Green River R. C. Rollins 2250 1938-6-2
GH: 01155038 Boechera lignifera (A. Nelson) W. A. Weber USA: Colorado 20 miles north of Rifle R. C. Rollins 2210 1938-5-27
GH: 01155039 Boechera lignifera (A. Nelson) W. A. Weber USA: Colorado near Meeker R. C. Rollins 2222 1938-5-28
GH: 01155046 Boechera lignifera (A. Nelson) W. A. Weber USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2274 1938-6-3
GH: 01155055 Boechera lignifera (A. Nelson) W. A. Weber USA: Wyoming 20 miles north of Baggs R. C. Rollins 2211 1938-5-28
GH: 00946282 Boechera lignifera (A. Nelson) W. A. Weber USA: Wyoming near Black's Fork River, 3 miles north of Ly... R. C. Rollins 2292 1938-6-6
GH: 00946284 Boechera lignifera (A. Nelson) W. A. Weber USA: Wyoming 3 miles south of Lonetree R. C. Rollins 2304 1938-6-7
GH: 00946287 Boechera lignifera (A. Nelson) W. A. Weber USA: Wyoming 3 miles west of Fort Bridger R. C. Rollins 2236 1938-5-31
GH: 00946289 Boechera lignifera (A. Nelson) W. A. Weber USA: Wyoming near Cottonwood Creek, 10 miles north Lonetr... R. C. Rollins 2803 1938-6-7
GH: 00946290 Boechera lignifera (A. Nelson) W. A. Weber USA: Wyoming Flat Iron Butte, extreme southern Lincoln Co... R. C. Rollins 2359 1938-6-16
GH: 00946291 Boechera lignifera (A. Nelson) W. A. Weber USA: Wyoming 2 miles southeast of Green River R. C. Rollins 2246 1938-6-2
GH: 01155064 Boechera oxylobula (Greene) W. A. Weber USA: Colorado 1 mile east of Sapinero R. C. Rollins 2113 1938-5-23
GH: 00309969 Boechera pallidifolia (Rollins) W. A. Weber USA: Colorado 6 miles east of Gunnison R. C. Rollins 2093 1938-5-22
GH: 00946724 Boechera pauciflora (Nuttall) Windham & Al-Shehbaz USA: Utah near Devil's Slide R. C. Rollins 2307 1938-6-12
GH: 01155091 Boechera perennans (S. Watson) W. A. Weber USA: Colorado 3 miles northeast of Cedaredge R. C. Rollins 2148 1938-5-25
GH: 01155092 Boechera perennans (S. Watson) W. A. Weber USA: Colorado 2 miles west of Rifle R. C. Rollins 2203 1938-5-27
GH: 00960258 Boechera pulchra pallens (M. E. Jones) Dorn USA: Colorado 2 miles west of Rifle R. C. Rollins 2201 1938-5-27
GH: 00960260 Boechera pulchra pallens (M. E. Jones) Dorn USA: Colorado 6 miles east of Montrose R. C. Rollins 2120 1938-5-24
GH: 00960261 Boechera pulchra pallens (M. E. Jones) Dorn USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2169 1938-5-26
GH: 00960270 Boechera pulchra pallens (M. E. Jones) Dorn USA: Utah near Sheep Creek, 8 miles south of Manila R. C. Rollins 2281 1938-6-3
GH: 01155133 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Colorado 4 miles east of Gunnison R. C. Rollins 2094a 1938-5-22
GH: 01155134 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Colorado near Sargents R. C. Rollins 2087 1938-5-21
GH: 01155136 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Colorado 3 miles northeast of Cedaredge R. C. Rollins 2147 1938-5-25
GH: 01155142 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Colorado 2 miles northeast of Cedaredge R. C. Rollins 2146 1938-5-25
GH: 01155144 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Colorado 4 miles east of Gunnison R. C. Rollins 20948 1938-5-22
GH: 01155152 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Colorado near Mesa R. C. Rollins 2179 1938-5-27
GH: 01155168 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Utah near Sheep Creek, 12 miles southwest of Mani... R. C. Rollins 2268 1938-6-3
GH: 00948166 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Wyoming 3 miles west of Fort Bridger R. C. Rollins 2235 1938-5-31
GH: 00948167 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Wyoming Flat Iron Butte, extreme southern Lincoln Co... R. C. Rollins 2353 1938-6-16
GH: 00948168 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Wyoming Piedmont Bench, 10 miles west of Fort Bridge... R. C. Rollins 2322 1938-6-14
GH: 00948239 Boechera retrofracta (Graham) A. Löve & D. Löve USA: Wyoming 3 miles south of Lonetree R. C. Rollins 2305 1938-6-7
GH: 00948261 Boechera selbyi (Rydberg) W. A. Weber USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2160 1938-5-26
GH: 00948263 Boechera selbyi (Rydberg) W. A. Weber USA: Colorado 6 miles east of Montrose R. C. Rollins 2122 1938-5-24
GH: 00948271 Boechera selbyi (Rydberg) W. A. Weber USA: Colorado Colorado National Monument 8 miles west of G... R. C. Rollins 2170 1938-5-26
GH: 00944203 Boechera sp. USA: Colorado 4 miles south of Mesa R. C. Rollins 2187 1938-5-27
GH: 00944289 Boechera sp. USA: Colorado 20 miles north of Rifle R. C. Rollins 2205 1938-5-27
GH: 00948529 Boechera sparsiflora subvillosa (S. Watson) Dorn USA: California Sisson Southern Trail R. C. Rollins 11051 1938-6-17
GH: 00948842 Boechera stricta (Graham) Al-Shehbaz USA: Colorado 20 miles north of Rifle R. C. Rollins 2204 1938-5-27
GH: 01155281 Cardamine cordifolia A. Gray USA: Colorado 10 miles west of Salida R. C. Rollins 2080 1938-5-21
GH: 01087399 Caulanthus crassicaulis S. Watson USA: Wyoming 2 miles north of Linwood, Utah R. C. Rollins 2264 1938-6-3
GH: 00986124 Crucihimalaya virgata (Nuttall) D. A. German & A. L. Ebel USA: Utah Mountain Mahogeny near Sheep Creek, 12 miles... R. C. Rollins 2269 1938-6-3
GH: 01155425 Descurainia pinnata brachycarpa (Richardson) Detling USA: Colorado bottom of the Royal Gorge, between Canon Cit... R. C. Rollins 2071 1938-5-19
GH: 01155509 Descurainia pinnata halictorum (Cockerell) Detling USA: Colorado 6 miles east of Montrose; Upper Sonoran Life... R. C. Rollins 2121 1938-5-24
GH: 01084108 Descurainia pinnata halictorum (Cockerell) Detling USA: Wyoming 2 miles north of Linwood, Utah R. C. Rollins 2265 1938-6-3
GH: 01084109 Descurainia pinnata halictorum (Cockerell) Detling USA: Wyoming near Blacks Fork River, 3 miles north of Lym... R. C. Rollins 2806 1938-6-6
GH: 01084258 Descurainia pinnata nelsonii (Rydberg) Detling USA: Colorado 6 miles east of Montrose R. C. Rollins 2118 1938-5-24
GH: 01084907 Draba albertina Greene USA: Wyoming 15 miles south of Mountain View R. C. Rollins 2371 1938-6-17
GH: 01106084 Draba cuneifolia Nuttall ex Torrey & A. Gray USA: Colorado 10 miles west of Canon City R. C. Rollins 2075 1938-5-19
GH: 00992035 Draba juniperina Dorn USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2275 1938-6-3
GH: 00992051 Draba nemorosa Linnaeus USA: Colorado Royal Gorge between Canon City and Salida R. C. Rollins 2076 1938-5-19
GH: 00992095 Draba reptans (Lamarck) Fernald USA: Colorado near Meeker R. C. Rollins 2221 1938-5-28
GH: 01561139 Draba smithii Gilg & O. E. Schulz USA: Colorado on the north slope of Raton Mesa, at the hea... R. C. Rollins 1849 1938-7-11
GH: 01538232 Erysimum capitatum argillosum (Greene) R. J. Davis USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2174 1938-5-26
GH: 01538233 Erysimum capitatum argillosum (Greene) R. J. Davis USA: Colorado near the Royal Gorge Bridge, Canon City-Sali... R. C. Rollins 2070 1938-5-19
GH: 01538352 Erysimum capitatum argillosum (Greene) R. J. Davis USA: Wyoming 20 miles north of Baggs R. C. Rollins 2212 1938-5-28
GH: 01538857 Erysimum inconspicuum (S. Watson) MacMillan USA: Wyoming on the main divide between Fort Bridger and ... R. C. Rollins 2342 1938-6-14
GH: 01546664 Lepidium alyssoides A. Gray USA: Colorado 6 miles east of Montrose R. C. Rollins 2117 1938-5-24
GH: 01548094 Lepidium densiflorum Schrader USA: Colorado Royal Gorge between Canyon City and Salida R. C. Rollins 2073 1938-5-19
GH: 01548303 Lepidium densiflorum macrocarpum G. A. Mulligan USA: Colorado 2 miles south of Delta R. C. Rollins 2142 1938-5-25
GH: 01549181 Lepidium montanum jonesii (Rydberg) C. L. Hitchcock USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2276 1938-6-3
GH: 01549185 Lepidium montanum jonesii (Rydberg) C. L. Hitchcock USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2162 1938-5-26
GH: 01549210 Lepidium montanum wyomingense (C. L. Hitchcock) C. L. Hitchcock USA: Wyoming 25 miles south of Green River R. C. Rollins 2262 1938-6-3
GH: 01549213 Lepidium montanum wyomingense (C. L. Hitchcock) C. L. Hitchcock USA: Wyoming 5 miles west of Laramie R. C. Rollins [data not captured] 2397 1938-6-27
GH: 01549405 Lepidium perfoliatum Linnaeus USA: Colorado Canyon of Plateau Creek, 15 miles northeast ... R. C. Rollins 2184 1938-5-27
GH: 01550670 Noccaea fendleri glauca (A. Nelson) Al-Shehbz & M. Koch USA: Colorado 5 miles north of Sargents R. C. Rollins 2081 1938-5-21
GH: 01550673 Noccaea fendleri glauca (A. Nelson) Al-Shehbz & M. Koch USA: Colorado 11 miles south of Pueblo. R. C. Rollins 208 1938-5-19
GH: 01573493 Physaria acutifolia Rydberg USA: Colorado 10 miles south of Montrose R. C. Rollins 2134 1938-5-24
GH: 01573500 Physaria acutifolia Rydberg USA: Colorado Colorado Nat. Monument; 8 miles west of Gran... R. C. Rollins 2176 1938-5-26
GH: 01573502 Physaria acutifolia Rydberg USA: Colorado 20 miles north of Rifle R. C. Rollins 2209 1938-5-27
GH: 01573503 Physaria acutifolia Rydberg USA: Colorado near Meeker R. C. Rollins 2220 1938-5-28
GH: 01573600 Physaria acutifolia Rydberg USA: Wyoming foothills of Bridges Butte, 3 mi w. Fort Bri... R. C. Rollins 2387 1938-6-24
GH: 01573604 Physaria acutifolia Rydberg USA: Wyoming 3 mi. west of Fort Bridges R. C. Rollins 2229 1938-5-31
GH: 01573606 Physaria acutifolia Rydberg USA: Wyoming 1 mile south of Green River R. C. Rollins 2241 1938-6-2
GH: 01575102 Physaria calcicola (Rollins) O'Kane & Al-Shehbaz USA: Colorado near Portland, 6 miles east of Florence R. C. Rollins 2067 1938-5-19
GH: 00019424 Physaria condensata Rollins USA: Wyoming Foothills of Bridger Butte, 3 miles west of ... R. C. Rollins 2385 1938-6-24
GH: 01575528 Physaria fendleri (A. Gray) O'Kane & Al-Shehbaz USA: Colorado 3 miles northwest of Pueblo R. C. Rollins 2065 1938-5-19
GH: 01575529 Physaria fendleri (A. Gray) O'Kane & Al-Shehbaz USA: Colorado between Las Animas and La Junta R. C. Rollins 2054 1938-5-18
GH: 01575732 Physaria floribunda Rydberg USA: Colorado 3 miles N.E. Cedaredge R. C. Rollins 2150 1938-5-25
GH: 01575733 Physaria floribunda Rydberg USA: Colorado near Mesa R. C. Rollins 2197 1938-5-27
GH: 01575734 Physaria floribunda Rydberg USA: Colorado 10 miles north of Mesa, Mesa-De Beque R. C. Rollins 2194 1938-5-27
GH: 01575760 Physaria floribunda Rydberg USA: Colorado 3 miles east of Sapinero R. C. Rollins 2108 1938-5-23
GH: 01687458 Physaria ludoviciana (Nuttall) O'Kane & Al-Shehbaz USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2171 1938-5-26
GH: 01687459 Physaria ludoviciana (Nuttall) O'Kane & Al-Shehbaz USA: Colorado near Mesa on the northern slope of the Grand... R. C. Rollins 2198 1938-5-27
GH: 01687551 Physaria ludoviciana (Nuttall) O'Kane & Al-Shehbaz USA: Wyoming foothills of Bridger Butte, 3 miles west of ... R. C. Rollins 2237 1938-5-31
GH: 01687621 Physaria montana (A. Gray) Greene USA: Colorado 4 miles south of Salida R. C. Rollins 2078 1938-5-20
GH: 01687637 Physaria montana (A. Gray) Greene USA: Colorado 11 miles south of Pueblo R. C. Rollins 2055 1938-5-19
GH: 01687647 Physaria montana (A. Gray) Greene USA: Colorado 10 miles west of Canon City R. C. Rollins 2068 1938-5-19
GH: 01687692 Physaria nelsonii O'Kane & Al-Shehbaz USA: Wyoming Flat Iron Butte, extreme southern end of Lin... R. C. Rollins 2360 1938-6-16
GH: 01687693 Physaria nelsonii O'Kane & Al-Shehbaz USA: Wyoming 2 miles south of Green River R. C. Rollins [data not captured] 2244 1938-6-2
GH: 01687846 Physaria ovalifolia (Rydberg) O'Kane & Al-Shehbaz USA: Colorado between Las Animas and La Junta R. C. Rollins 2052 1938-5-18
GH: 01687856 Physaria ovalifolia (Rydberg) O'Kane & Al-Shehbaz USA: Kansas on a tributary of the Pawnee River, 10 miles... R. C. Rollins 2050 1938-5-18
GH: 01687996 Physaria parvula (Greene) O'Kane & Al-Shehbaz USA: Wyoming near Beaver Creek, 3 miles south of Lonetree R. C. Rollins 2302 1938-6-7
GH: 01691062 Physaria prostrata (A. Nelson) O'Kane & Al-Shehbaz USA: Wyoming near Big Muddy Creek, between Fort Bridger a... R. C. Rollins 2326 1938-6-14
GH: 01691377 Physaria rollinsii G. A. Mulligan USA: Colorado 5 miles east of Parlin R. C. Rollins 2088 1938-5-21
GH: 01691380 Physaria rollinsii G. A. Mulligan USA: Colorado 10 miles east of Sapinero R. C. Rollins 2106 1938-5-23
GH: 01693052 Rorippa sinuata (Nuttall) Hitchcock USA: Kansas near Little River R. C. Rollins 2047 1938-5-18
GH: 01693099 Rorippa sinuata (Nuttall) Hitchcock USA: Wyoming 25 miles south of Green River R. C. Rollins 2260 1938-6-3
GH: 01716063 Sisymbrium linifolium (Nuttall) Nuttall ex Torrey & A. Gray USA: Colorado 4 miles east of Gunnison R. C. Rollins 2097 1938-5-22
GH: 01716584 Stanleya albescens M. E. Jones USA: Colorado 12 miles south Grand Junction R. C. Rollins 2156 1938-5-25
ECON: 01716585 Stanleya albescens M. E. Jones USA: Colorado 6 miles east of Montrose R. C. Rollins 2123 1938-5-24
GH: 01716587 Stanleya albescens M. E. Jones USA: Colorado 6 miles east of Montrose R. C. Rollins 2123 1938-5-24
GH: 01716588 Stanleya albescens M. E. Jones USA: Colorado 2 miles south of Delta R. C. Rollins 2139 1938-5-25
GH: 01716592 Stanleya albescens M. E. Jones USA: Colorado 6 miles east of Montrose R. C. Rollins 2123 1938-5-24
ECON: 01716651 Stanleya pinnata (Pursh) Britton USA: Colorado near Arkansas River, 5 miles east of Florenc... R. C. Rollins 2066 1938-5-19
GH: 01716661 Stanleya pinnata (Pursh) Britton USA: Colorado near Arkansas River, 5 mi. east of Florence R. C. Rollins 2066 1938-5-19
GH: 00019679 Stanleya pinnata gibberosa Rollins USA: Wyoming Foothills of Bridger Butte, 3 miles west of ... R. C. Rollins 2383 1938-6-24
GH: 00019678 Stanleya pinnata gibberosa Rollins USA: Wyoming Foothills of Bridger Butte, 3 miles west of ... R. C. Rollins 2383 1938-6-24
ECON: 00241879 Stanleya pinnata gibberosa Rollins USA: Wyoming Foothills of Bridger Butte, 3 miles west of ... R. C. Rollins 2383 1938-6-24
GH: 01716801 Stanleya pinnata gibberosa Rollins USA: Wyoming 3 mi west Fort Bridger R. C. Rollins 2228 1938-5-31
GH: 01716796 Stanleya pinnata bipinnata (Greene) Rollins USA: Wyoming 2 miles south Carter R. C. Rollins 2351 1938-6-16
GH: 01716797 Stanleya pinnata bipinnata (Greene) Rollins USA: Wyoming 3 miles west Fort Bridger R. C. Rollins 2388 1938-6-24
GH: 01716798 Stanleya pinnata bipinnata (Greene) Rollins USA: Wyoming 3 miles northwest of Fort Bridger R. C. Rollins 2320 1938-6-14
GH: 01716799 Stanleya pinnata bipinnata (Greene) Rollins USA: Wyoming 5 mi. west of Laramie R. C. Rollins 2396 1938-6-27
GH: 01716813 Stanleya pinnata integrifolia (E. James) Rollins USA: Colorado 10 miles southwest Craig R. C. Rollins 2224 1938-5-28
GH: 01716816 Stanleya pinnata integrifolia (E. James) Rollins USA: Colorado Colorado Nat. Monument, 8 mi. west Grand Jun... R. C. Rollins 2173 1938-5-26
GH: 01716819 Stanleya pinnata integrifolia (E. James) Rollins USA: Wyoming 1 mile south of Green River R. C. Rollins 2240 1938-6-2
GH: 01716820 Stanleya pinnata integrifolia (E. James) Rollins USA: Wyoming near Green River R. C. Rollins 2390 1938-6-26
GH: 01716836 Stanleya pinnata integrifolia (E. James) Rollins USA: Wyoming 3 mi. east Rock Springs R. C. Rollins 2391 1938-6-26
GH: 01716842 Stanleya pinnata integrifolia (E. James) Rollins USA: Wyoming 4 miles east Parco R. C. Rollins 2392 1938-6-26
ECON: 01716904 Stanleya viridiflora Nuttall USA: Wyoming 3 miles east of Green River R. C. Rollins 2809 1938-6-26
GH: 01716910 Stanleya viridiflora Nuttall USA: Wyoming 3 miles east Green River R. C. Rollins 2809 1938-6-26
GH: 01716916 Stanleya viridiflora Nuttall USA: Wyoming on the "divide" between Far Bridge and Evans... R. C. Rollins 2343 1938-6-14
GH: 01736005 Streptanthella longirostris (S. Watson) Rydberg USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2168 1938-5-26
GH: 01736185 Streptanthus cordatus Nuttall ex Torrey & A. Gray USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2172 1938-5-26
GH: 01736303 Streptanthus cordatus Nuttall ex Torrey & A. Gray USA: Wyoming 6 miles north of Fort Bridger R. C. Rollins 2317 1938-6-13
GH: 00422389 Streptanthus tortuosus Kellogg USA: California Horse Camp Flats, Flora of Mount Shasta R. C. Rollins 11555 1938-8-21
GH: 01736432 Strigosella africana (Linnaeus) Botschantzev USA: Colorado 5 miles south of Debeque R. C. Rollins 2200 1938-5-27
GH: 01736632 Thelypodiopsis elegans (Jones) Rydberg USA: Colorado 10 miles north of Mesa R. C. Rollins 2195 1938-5-27
GH: 01736633 Thelypodiopsis elegans (Jones) Rydberg USA: Colorado 2 miles south of Delta R. C. Rollins 2137 1938-5-25
GH: 01736635 Thelypodiopsis elegans (Jones) Rydberg USA: Colorado 2 miles west of Rifle R. C. Rollins 2202 1938-5-27
GH: 01736639 Thelypodiopsis elegans (Jones) Rydberg USA: Colorado 3 miles east of Sapinero R. C. Rollins 2110 1938-5-23
GH: 01736649 Thelypodiopsis elegans (Jones) Rydberg USA: Colorado 6 miles east of Montrose R. C. Rollins 2115 1938-5-24
GH: 01736669 Thelypodiopsis elegans (Jones) Rydberg USA: Wyoming near Green River R. C. Rollins 2217 1938-5-28
GH: 01733064 Turritis glabra Linnaeus USA: California Bear Springs. Transition. drier portions of ... R. C. Rollins 11200 1938-7-15
Cactaceae GH: 00244334 Cereus aggregatus (Engelmann ex Emory) J. M. Coulter USA: Colorado near the Gunnison River, 15 miles west of De... R. C. Rollins 2153 1938-5-25
Capparaceae GH: 01872133 Peritoma lutea (Hooker) Rafinesque USA: Colorado 2 miles south of Grand Junction R. C. Rollins 2157 1938-5-25
GH: 01872216 Peritoma lutea (Hooker) Rafinesque USA: Wyoming 3 miles east of Rock Springs R. C. Rollins 2391a 1938-6-26
GH: 01872397 Peritoma serrulata (Pursh) de Candolle USA: Wyoming 20 miles east of Evanston R. C. Rollins 2339 1938-6-14
Caprifoliaceae GH: 02035150 Symphoricarpos vaccinioides Rydberg USA: Utah 6 miles north of Fort Bridger R. C. Rollins 2315 1938-6-13
Ephedraceae GH: 00933867 Ephedra viridis Coville USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2271 1938-6-3
Fabaceae GH: 02064471 Astragalus asclepiadoides M. E. Jones USA: Colorado 6 miles east of Montrose R. C. Rollins 2124 1938-5-24
GH: 02064501 Astragalus atratus S. Watson USA: Wyoming near Blacks Fork, 3 miles north of Lyman R. C. Rollins 2798 1938-6-6
GH: 02064722 Astragalus bisulcatus (Hooker) A. Gray USA: Wyoming 6 miles north of Fort Bridger R. C. Rollins 2318 1938-6-13
GH: 02047355 Astragalus chamaeleuce A. Gray USA: Wyoming 2 miles southeast of Green River R. C. Rollins 2256 1938-6-2
GH: 02047357 Astragalus chamaeleuce A. Gray USA: Wyoming near Blacks Fork River, 8 miles east of Lyma... R. C. Rollins 2381 1938-6-19
GH: 02052049 Astragalus jejunus S. Watson USA: Wyoming 20 miles east of Evanston R. C. Rollins 2333 1938-6-14
GH: 02052050 Astragalus jejunus S. Watson USA: Wyoming Bleak top of Flat Iron Butte, southern edge ... R. C. Rollins 2362 1938-6-16
GH: 02052051 Astragalus jejunus S. Watson USA: Wyoming 2 miles southeast of Green River R. C. Rollins [data not captured] 2252 1938-6-2
GH: 02052873 Astragalus megacarpus (Nuttall) A. Gray USA: Wyoming near Cottonwood Creek, 10 miles north of Lon... R. C. Rollins 2800 1938-6-7
GH: 02049153 Astragalus missouriensis Nuttall USA: Colorado 2 miles south of Delta R. C. Rollins 2144 1938-5-25
GH: 02048233 Astragalus purshii Douglas ex Hooker USA: Wyoming Flat Iron Butte, southern edge of Lincoln Co... R. C. Rollins 2361 1938-6-16
GH: 02048695 Astragalus simplicifolius (Nuttall) A. Gray USA: Wyoming 20 miles north of Baggs R. C. Rollins 2219 1938-5-28
GH: 01958397 Hedysarum occidentale Greene USA: Wyoming near Big Muddy Creek, between Fort Bridger a... R. C. Rollins 2323 1938-6-14
GH: 02086478 Lupinus alpestris (A. Nelson) D. B. Dunn & J. M. Gillett USA: Wyoming near Blacks Fork River, 3 miles north of Lym... R. C. Rollins 2284 1938-6-6
GH: 02129208 Lupinus wyethii S. Watson USA: Colorado 20 miles north of Rifle R. C. Rollins 2207 1938-5-27
GH: 02131506 Oxytropis sericea Nuttall USA: Wyoming 1 mile south of Green River R. C. Rollins 2239 1938-6-2
GH: 02133079 Pediomelum megalanthum (Wooton & Standley) Rydberg USA: Colorado 10 miles north of Mesa, between Mesa and Deb... R. C. Rollins 2193 1938-5-27
GH: 02137936 Trifolium andinum Nuttall USA: Wyoming near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2277 1938-6-3
GH: 02345321 Vicia americana minor Hooker USA: Wyoming Dry bank of Green River, at the city of Gree... R. C. Rollins 2218 1938-5-28
Geraniaceae GH: 01866426 Geranium viscosissimum incisum (Torrey & A. Gray) N. H. Holmgren USA: Wyoming steep slope on the divide between Evanston a... R. C. Rollins 2341 1938-6-14
Hydrangeaceae GH: 01750782 Fendlera falcata Thornber ex Wooton & Standley USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2163 1938-5-26
Iridaceae GH: 01747535 Iris missouriensis Nuttall USA: Wyoming Blacks Fork River, 3 miles north of Lyman R. C. Rollins 2282 1938-6-6
Lamiaceae GH: 01696568 Salvia regla Cavanilles USA: Texas Chisos Mountains, Big Bend State Park. R. C. Rollins 2775 1938-9-6
Linaceae GH: 02053343 Linum lewisii Pursh USA: Wyoming 2 miles southeast of Green River R. C. Rollins 2247 1938-6-2
Nyctaginaceae GH: 01642342 Abronia elliptica A. Nelson USA: Colorado 6 miles east of Montrose R. C. Rollins 2127 1938-5-24
GH: 01642387 Abronia elliptica A. Nelson USA: Wyoming Lime-rock point, 2 miles southeast of Green ... R. C. Rollins 2254 1938-6-2
Oleaceae GH: 01848225 Fraxinus anomala Torrey ex S. Watson USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2167 1938-5-26
Onagraceae GH: 01625971 Camissonia scapoidea (Torrey & A. Gray) P. H. Raven USA: Wyoming 25 miles south of Green River R. C. Rollins 2261 1938-6-3
GH: 01780899 Oenothera albicaulis Nuttall USA: Colorado 2 miles south of Delta R. C. Rollins 2145 1938-5-25
GH: 01643285 Oenothera pallida trichocalyx (Nuttall) Munz & W.M. Klein USA: Wyoming near Blacks Fork River, 3 miles north of Lym... R. C. Rollins 2285 1938-6-6
Orobanchaceae GH: 01876128 Castilleja chromosa A. Nelson USA: Colorado 5 miles southwest of Craig R. C. Rollins 2225 1938-5-28
GH: 01876241 Castilleja chromosa A. Nelson USA: Wyoming 10 miles south of Mountain View R. C. Rollins 2370 1938-6-17
GH: 01876810 Castilleja flava S. Watson USA: Wyoming Flat Iron Butte, extreme southern Lincoln Co... R. C. Rollins 2808 1938-6-16
Plantaginaceae GH: 02001834 Penstemon acaulis L. O. Williams USA: Utah near Flaming Gorge, 15 miles south west of M... R. C. Rollins 2270 1938-6-3
GH: 02002208 Penstemon arenicola A. Nelson USA: Wyoming 20 miles north of Baggs. R. C. Rollins 2214 1938-5-28
GH: 02002454 Penstemon auriberbis Pennell USA: Colorado between Las Animas and La Junta. R. C. Rollins 2051 1938-5-18
GH: 02118004 Penstemon calycosus Small USA: Illinois [data not captured] R. C. Rollins 2043 1938-5-16
GH: 02118279 Penstemon cleburnei M. E. Jones USA: Wyoming 1 mile south of Green River. R. C. Rollins 2238 1938-6-2
GH: 02118278 Penstemon cleburnei M. E. Jones USA: Wyoming Cottonwood Creek, 10 miles north of Lonetree... R. C. Rollins 2802 1938-6-7
GH: 02118539 Penstemon crandallii A. Nelson USA: Colorado 4 miles south of Mesa R. C. Rollins 2189 1938-5-27
GH: 02118637 Penstemon cyananthus Hooker USA: Wyoming Flat Iron Butte, extreme southern Lincoln co... R. C. Rollins 2364a 1938-6-16
GH: 02118687 Penstemon cyanocaulis Payson USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2158 1938-5-26
GH: 02120507 Penstemon humilis Nuttall ex A. Gray USA: Wyoming near Big Muddy Creek, between Fort Bridger a... R. C. Rollins 2324 1938-6-14
GH: 02120506 Penstemon humilis Nuttall ex A. Gray USA: Wyoming Flat Iron Butte, extreme southern Lincoln Co... R. C. Rollins 2364 1938-6-16
GH: 02121395 Penstemon pachyphyllus (A. Gray) Rydberg USA: Wyoming 2 miles north of Linwood, Utah. R. C. Rollins 2263 1938-6-3
GH: 02121433 Penstemon pallidus Small USA: Missouri [data not captured] R. C. Rollins 2044 1938-5-17
GH: 02121633 Penstemon paysoniorum D. D. Keck USA: Wyoming 6 miles north of Fort Bridger. R. C. Rollins 2314 1938-6-13
GH: 02121632 Penstemon paysoniorum D. D. Keck USA: Wyoming bottom of Cottonwood Creek, 10 miles north o... R. C. Rollins 2799 1938-6-7
GH: 02121630 Penstemon paysoniorum D. D. Keck USA: Wyoming Flat Iron Butte, southern Lincoln County. R. C. Rollins 2354 1938-6-16
GH: 02122075 Penstemon radicosus A. Nelson USA: Wyoming near Cottonwood Creek, 4 miles north of Lone... R. C. Rollins 2807 1938-6-7
GH: 02122106 Penstemon retrorsus Payson USA: Colorado 6 miles east of Montrose. R. C. Rollins 2125 1938-5-24
GH: 01801221 Penstemon versicolor Pennell USA: Colorado 11 miles south of Pueblo. R. C. Rollins 2063 1938-5-19
Polemoniaceae GH: 01000988 Giliastrum acerosum (A. Gray) Rydberg USA: Colorado between Las Animas and La Junta R. C. Rollins 2053 1938-5-18
GH: 01104223 Ipomopsis polycladon (Torrey) V. E. Grant USA: Colorado 2 miles south of Delta R. C. Rollins 2143 1938-5-25
GH: 01104269 Ipomopsis roseata (Rydberg) V. E. Grant USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2166 1938-5-26
GH: 01104372 Ipomopsis spicata (Nuttall) V. E. Grant USA: Colorado 11 miles south of Pueblo R. C. Rollins 2059 1938-5-19
GH: 01104388 Ipomopsis spicata (Nuttall) V. E. Grant USA: Wyoming 1 mile north of Lonetree R. C. Rollins 2300 1938-6-7
GH: 01105978 Linanthus caespitosus (Nuttall) J. M. Porter & L. A. Johnson USA: Wyoming 2 miles southeast of Green River R. C. Rollins 2248 1938-6-2
GH: 00954314 Linanthus pungens (Torrey) J. M. Porter & L. A. Johnson USA: Wyoming near Blacks Fork River, 3 miles north of Lym... R. C. Rollins 2290 1938-6-6
GH: 01574280 Phlox hoodii Richardson USA: Colorado 5 miles east of Parlin R. C. Rollins 2092 1938-5-21
GH: 01574363 Phlox hoodii canescens (Torrey & A. Gray) Wherry USA: Wyoming 2 miles north of Lonetree R. C. Rollins 2805 1938-6-7
GH: 01574385 Phlox kelseyi Wherry USA: Wyoming near Lonetree R. C. Rollins 2295 1938-6-7
GH: 01574524 Phlox longifolia compacta (Brand) Wherry USA: Colorado 11 miles south of Pueblo R. C. Rollins 2064 1938-5-19
GH: 01574499 Phlox longifolia calva Wherry USA: Wyoming Piedmont Bench, 10 miles west of Fort Bridge... R. C. Rollins 2321 1938-6-14
GH: 01574544 Phlox longifolia cortezana (A. Nelson) Wherry USA: Colorado 10 miles east of Sapinero R. C. Rollins 2105 1938-5-23
GH: 01574761 Phlox multiflora A. Nelson USA: Wyoming near Big Muddy Creek, between Fort Bridger a... R. C. Rollins 2325 1938-6-14
Polygonaceae GH: 02005373 Rumex hymenosepalus Torrey USA: Wyoming near Zealer's Ranch about 18 miles north of ... R. C. Rollins 2352 1938-6-16
GH: 02004704 Stenogonum salsuginosum Nuttall USA: Wyoming near Blacks Fork River, 8 miles east of Lyma... R. C. Rollins 2379 1938-6-19
Potamogetonaceae GH: 00449471 Potamogeton alpinus tenuifolius (Rafinesque) Ogden USA: Utah Bridger Lake, about 20 miles south of Mounta... R. C. Rollins 2319 1938-6-22
Primulaceae GH: 01922793 Dodecatheon pulchellum (Rafinesque) Merrill USA: Wyoming near Lonetree R. C. Rollins 2294 1938-6-7
Pucciniaceae FH: 00998201 Gymnosporangium inconspicuum Kern USA: Colorado northeast of Cedaredge R. C. Rollins 1958 1938-8-25
FH: 00997656 Gymnosporangium nelsonii Arthur USA: Colorado 3 miles northeast of Cedaredge R. C. Rollins 2151 1938-5-25
FH: 00940896 Puccinia aristidae Tracy USA: Wyoming near Blake Fork River, 3 mi. north of Lyman R. C. Rollins 2283 1938-6-6
Ranunculaceae GH: 01659013 Delphinium geyeri Greene USA: Wyoming near Blacks Fork River, 8 miles east of Lyma... R. C. Rollins 2380 1938-6-19
GH: 00038520 Thalictrum alpinum hebetum Boivin USA: Wyoming Near Lonetree R. C. Rollins 7 Jun 1938 1938-6-7
Rosaceae GH: 01587297 Cercocarpus ledifolius intricatus (S. Watson) M. E. Jones USA: Colorado Colorado National Monument, 8 miles west of ... R. C. Rollins 2165 1938-5-26
GH: 01587474 Cercocarpus montanus Rafinesque USA: Wyoming 6 miles north of Fort Bridger R. C. Rollins 2313 1938-6-13
GH: 01566024 Ivesia gordonii (Hooker) Torrey & A. Gray USA: Wyoming table land 10 miles south of Mountain View R. C. Rollins 2369 1938-6-17
GH: 01556682 Purshia tridentata (Pursh) de Candolle USA: Wyoming 3 miles west of Fort Bridger R. C. Rollins 2232 1938-5-31
Saxifragaceae GH: 01735599 Heuchera parvifolia Nuttall ex Torrey & A. Gray USA: Utah near Flaming Gorge, 15 miles southeast of Ma... R. C. Rollins 2278 1938-6-3
Solanaceae GH: 01542049 Quincula lobata (Torrey) Rafinesque USA: Colorado 11 miles south of Pueblo R. C. Rollins 2060 1938-5-19
Violaceae GH: 02147875 Viola nuttallii Pursh USA: Colorado 11 miles south of Pueblo R. C. Rollins 2061 1938-5-19
