Search Results — 2000 specimen records retrieved (1774 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC115  Aristolochia californica F. Roos 1930-3-16 Butte On Oroville road near Chico. 76 Comment
  RSA45488  Lotus corniculatus J. C. Roos 1948-9-6 4023 Contra Costa San Joaquin St., Antioch. Comment
  UCR23662  Elodea nuttallii John C. Roos 1968-8-27 s.n. Fresno Sierra Nevada Mountaiins, Rae Lakes. 3201 Comment
  UCSB45512  Astragalus asymmetricus Roos, John 1940-6-8 Fresno 25 miles west of Fresno on the flats Comment
  CLARK-A1528-1069  Trixis californica John C. Roos 1937-6-10 1510 Imperial Mountain Springs 670 Comment
  CLARK-A1528-2059  Pluchea sericea John C. Roos 1947-3-1 3301 Imperial Fish Springs Comment
  CLARK-A1528-2514  Atriplex elegans subsp. fasciculata John C. Roos 1949-4-6 4141 Imperial Pope Hot Springs Comment
  CLARK-A1528-2586  Monolepis nuttalliana John C. Roos 1949-4-8 4200 Imperial Palo Verde Valley Comment
  CLARK-A1528-3133  Teucrium depressum John C. Roos 1949-4-8 4201 Imperial Palo Verde Valley Comment
  CLARK-A1528-7848  Mentzelia multiflora subsp. longiloba John C. Roos 1949-4-7 4161 Imperial Niland Comment
  LA102382  Helianthus niveus subsp. tephrodes John C. Roos; 1949-4-7 4168 Imperial sand hills W of Yuma Comment
  RSA659178  Eriogonum deserticola J. C. Roos 1947-4-7 4178 Imperial Sand dunes about 45 miles S.E. of Niland. Comment
  RSA89981  Pholisma sonorae J. C. Roos 1949-4-7 4984 Imperial Between Yuma and Imperial Valley 61 Comment
  UCR18984  Astragalus lentiginosus var. borreganus John C. Roos 1949-4-7 4166 Imperial Sonoran (Colorado) Desert, Sand flats west of Yuma sand dunes Comment
  UCR26302  Nama hispida John C. Roos 1949-4-8 4197 Imperial Sonoran (Colorado) Desert, Milpitas Wash. Comment
  CAS-BOT-BC100620  Brickellia oblongifolia var. linifolia John Roos; Lucille Roos 1947-7-15 2868 Inyo Wild Rose Canyon, Panamint Mts. 2133 Comment
  CAS-BOT-BC100809  Chrysothamnus viscidiflorus subsp. viscidiflorus J. C. Roos; A. R. Roos 1955-8-25 6544 Inyo along California-Nevada boundary 2 miles NE of Willow Spring, Last Chance Mts. 2072 Comment
  CAS-BOT-BC105965  Chrysothamnus viscidiflorus subsp. viscidiflorus J. C. Roos 1961-10-22 s.n. Inyo Loretto Road, near Loretto Mine, east side of the Inyo Mtns. Comment
  CAS-BOT-BC106011  Chaetadelpha wheeleri John C. Roos 1955-5-13 6357 Inyo Southeast end Eureka Valley 975 Comment
  CAS-BOT-BC110324  Nitrophila mohavensis John C. Roos 1954-7-18 6194 Inyo Amargosa Desert 3 miles northeast of Death Valley Junction along Ash Meadows road. 624 Comment
  CAS-BOT-BC110332  Nitrophila mohavensis John C. Roos 1954-7-18 6194 Inyo Amargosa Desert 3 miles northeast of Death Valley Junction along Ash Meadows road. 624 Comment
  CAS-BOT-BC127626  Brickellia microphylla var. microphylla J. C. Roos; A. R. Roos 1953-8-14 6029 Inyo Al Rose Canyon, Inyo Mts. 2133 Comment
  CAS-BOT-BC131496  Ericameria albida John Roos; Lucille Roos 1954-9-14 6235 Inyo Amargosa Desert 2.5 miles NE of Death Valley Junction along Ash Meadows road 624 Comment
  CAS-BOT-BC131497  Ericameria albida J. C. Roos; A. R. Roos 1954-8-15 6224 Inyo Lower Warm Spring, Saline Valley 426 Comment
  CAS-BOT-BC135924  Allium atrorubens var. cristatum J. C. Roos 1955-6-19 6439 Inyo Last Chance Mountains 3 mi. south of Willow Spring. 2286 Comment
  CAS-BOT-BC144008  Horkelia hispidula John Roos; Lucille Roos 1952-7-28 5856 Inyo Head of Wyman Canyon, White Mts. 3200 Comment
  CAS-BOT-BC151766  Diplacus mephiticus John Roos; Lucille Roos 1952-7-28 5846 Inyo Wyman Canyon, White Mts. 2621 Comment
  CAS-BOT-BC154311  Phacelia peirsoniana John Roos; Lucille Roos 1952-7-31 5878 Inyo N.W. of Cedar Flat, White Mts. 2438 Comment
  CAS-BOT-BC162938  Eremothera boothii subsp. desertorum John Roos; Lucille Roos 1954-6-26 6165 Inyo Mazourka Canyon, Inyo Mts. 2438 Comment
  CAS-BOT-BC181688  Eremogone kingii var. glabrescens J. C. Roos; A. R. Roos 1953-8-11 5997 Inyo 2 1/2 miles east of Blue Bell Mine 2987 Comment
  CAS-BOT-BC196616  Lupinus argenteus var. palmeri John Roos; Lucille Roos 1951-8-8 5109 Inyo North rim Reed Flat, White Mts. 3169 Comment
  CAS-BOT-BC199558  Tridens muticus var. muticus John C. Roos 1955-5-13 6339 Inyo West base Last Chance Mts., east of Eureka Valley sand dunes 1219 Comment
  CAS-BOT-BC218079  Achnatherum pinetorum J. C. Roos; A. R. Roos 1953-8-8 5939 Inyo Badger Flat, Inyo Mountains 2651 Comment
  CAS-BOT-BC220787  Salvia dorrii var. dorrii J. C. Roos 1955-7-21 6488 Inyo Whitetop Peak, summit Last Chance Mountains 2560 Comment
  CAS-BOT-BC220797  Salvia dorrii var. dorrii John Roos; Lucille Roos 1952-7-30 5859 Inyo East side Reed Flat, White Mts. 3078 Comment
  CAS-BOT-BC226105  Salvia funerea John Roos; Lucille Roos 1954-3-27 6057 Inyo Titus Canyon below Klare Spring, Grapevine Mts. Death Valley 914 Comment
  CAS-BOT-BC238192  Cordylanthus tecopensis J. C. Roos; A. R. Roos 1950-8-7 4929 Inyo Tecopa Hot Springs 426 Comment
  CAS-BOT-BC238267  Keckiella rothrockii J. C. Roos 1955-7-21 6494 Inyo Last Chance Mountains 1 mile south of Willow Spring 2072 Comment
  CAS-BOT-BC256244  Eriogonum deflexum var. baratum J. C. Roos 1955-7-22 6499 Inyo Willow Creek, west slope Last Chance Mountains 1615 Comment
  CAS-BOT-BC258754  Eriogonum ovalifolium var. ovalifolium J. C. Roos 1955-6-17 6405 Inyo 2 miles NE of Willow Spring, Last Chance Mountains 2011 Comment
  CAS-BOT-BC266928  Eriogonum panamintense var. mensicola John Roos; Lucille Roos 1947-7-15 2869 Inyo Wild Rose Canyon at Kilns Panamint Mts. 2133 Comment
  CAS-BOT-BC268733  Eriogonum microthecum var. simpsonii J. C. Roos 1955-7-21 6491 Inyo Last Chance Mountains 1 mile south of Willow Spring 2072 Comment
  CAS-BOT-BC283751  Leymus cinereus J. C. Roos; A. R. Roos 1951-8-12 5185 Inyo Reed Flat, White Mountains 3108 Comment
  CAS-BOT-BC284292  Chaenactis stevioides J. C. Roos 1955-6-20 6461 Inyo Last Chance Mountains near Willow Spring 1767 Comment
  CAS-BOT-BC289129  Hesperostipa comata J. C. Roos 1955-6-19 6453 Inyo Willow Spring, Last Chance Mountains 1828 Comment
  CAS-BOT-BC294438  Ericameria parryi var. aspera J. C. Roos; A. R. Roos 1955-8-26 6551 Inyo Saddle on main ridge between Squaw Peak and Waucoba Mt., Inyo Mts. 2956 Comment
  CAS-BOT-BC294932  Erigeron clokeyi J. C. Roos; A. R. Roos 1953-8-11 5989 Inyo 2 miles east of Blue Bell Mine, Inyo Mts. 2865 Comment
  CAS-BOT-BC308505  Gutierrezia sarothrae John Roos; Lucille Roos 1947-9-19 2802 Inyo Arcane Meadows, Panamint Mts. 2987 Comment
  CAS-BOT-BC340070  Tetradymia glabrata J. C. Roos 1955-6-21 6469 Inyo Along Loretto road 1.5 miles SW of Loretto Mine, east slope Inyo Mountains 1676 Comment
  CAS-BOT-BC413264  Oxytheca dendroidea subsp. dendroidea J. C. Roos 1955-7-23 6504 Inyo Soldier Flat, east base Waucoba Mountain, Inyo Mountains 2194 Comment
  CAS-BOT-BC5641  Stanleya pinnata subsp. inyoensis John C. Roos; L. Roos 1954-6-28 6177 Inyo SE end Eureka Valley 914 Comment
  CAS-BOT-BC60964  Stanleya pinnata var. pinnata John C. Roos 1955-5-13 6353 Inyo Southeast end Eureka Valley. 914 Comment
  CAS-BOT-BC61310  Streptanthus cordatus var. cordatus John Roos; Lucille Roos 1952-7-27 5835 Inyo Southeast rim Reed Flat, White Mountains. 3139 Comment
  CAS-BOT-BC73061  Pinus longaeva John Roos; Lucille Roos 1947-7-13 2819 Inyo Telescope Peak, Panamint Mts. 3322 Comment
  CAS-BOT-BC73062  Pinus longaeva J. C. Roos 1955-7-21 6483 Inyo North face Whitetop Peak, summit Last Chance Mountains. 2499 Comment
  CAS-BOT-BC93344  Ribes cereum John Roos; Lucille Roos 1954-6-29 6190 Inyo The Narrows, Marble Canyon, Inyo Mountains. 2209 Comment
  CLARK-A1528-1005  Agrostis idahoensis John C. Roos 1937-8-8 424 Inyo Lone Pine Comment
  CLARK-A1528-1064  Tetradymia canescens John C. Roos, Alfred R. Roos 1953-8-8 5940 Inyo Inyo Mountains 2651 Comment
  CLARK-A1528-1170  Cuscuta indecora John C. Roos 1965-9-18 Inyo Inyo Mountains Comment
  CLARK-A1528-1191  Chenopodium rubrum John C. Roos 1965-9-18 Inyo Inyo Mountains Comment
  CLARK-A1528-1274  Bromus porteri John C. Roos, Lucille Roos 1951-8-8 5095 Inyo White Mountains 3169 Comment
  CLARK-A1528-1282  Poa nevadensis John C. Roos, Alfred R. Roos 1953-8-11 6000 Inyo Inyo Mountains 3078 Comment
  CLARK-A1528-1556  Arnica chamissonis subsp. foliosa John C. Roos 1937-8-5 1024 Inyo White Mountains Comment
  CLARK-A1528-1582  Artemisia norvegica John C. Roos 1955-8-26 Inyo Inyo Mountains Summit; ; locally common on moist (thunderstorms), open, rocky benches and slopes; with Ribes cereum, Pinus aristata, P. flexilis, etc. 3352 Comment
  CLARK-A1528-1709  Petradoria discoidea John C. Roos 1953-8-8 5935 Inyo Inyo Mountains 2743 Comment
  CLARK-A1528-1733  Chrysothamnus parryi subsp. asper John C. Roos 1956-9-29 6601 Inyo Panamint Mountains Comment
  CLARK-A1528-1753  Chrysothamnus viscidiflorus subsp. pumilus John C. Roos 1953-8-13 6020 Inyo Inyo Mountains 3337 Comment
  CLARK-A1528-1888  Haplopappus gilmanii John C. Roos 1954-8-14 6216 Inyo Inyo Mountains 2179 Comment
  CLARK-A1528-1945  Hieracium horridum John C. Roos 1937-8-8 2463 Inyo Lone Pine Canyon Comment
  CLARK-A1528-2054  Chrysothamnus viscidiflorus subsp. puberulus John C. Roos 1951-8-8 5090 Inyo White Mountains 2590 Comment
  CLARK-A1528-2080  Senecio douglasii John C. Roos 1947-4-18 3472 Inyo Death Valley National Park Comment
  CLARK-A1528-2214  Cryptantha hoffmannii John C. Roos, Lucille Roos 1952-7-28 5849 Inyo White Mountains 2743 Comment
  CLARK-A1528-2244  Lappula redowskii John C. Roos 1965-7-11 Inyo Wildrose Canyon Comment
  CLARK-A1528-2495  Atriplex parryi John C. Roos 1950-4-7 4726 Inyo Tecopa 426 Comment
  CLARK-A1528-2544  Atriplex confertifolia John C. Roos 1953-8-10 5978 Inyo Inyo Mountains 2438 Comment
  CLARK-A1528-2591  Nitrophila mohavensis John C. Roos 1954-9-14 6234 Inyo Death Valley Junction 624 Comment
  CLARK-A1528-2601  Suaeda depressa var. erecta John C. Roos, Lucille Roos 1954-9-14 6236 Inyo Amargosa Desert 624 Comment
  CLARK-A1528-2625  Sedum rosea subsp. integrifolium John C. Roos 1937-8-8 1614 Inyo Lone Pine Canyon Comment
  CLARK-A1528-2636  Euphorbia fendleri John C. Roos 1953-8-13 6022 Inyo Inyo Mountains 2499 Comment
  CLARK-A1528-2768  Dalea fremontii John C. Roos 1947-4-19 3486 Inyo Death Valley Comment
  CLARK-A1528-2871  Prosopis pubescens John C. Roos 1947-4-20 3504 Inyo Death Valley Comment
  CLARK-A1528-3031  Sisyrinchium bellum John C. Roos 1947-4-20 3500 Inyo Death Valley 76 Comment
  CLARK-A1528-3158  Eucnide urens John C. Roos 1947-4-19 3483 Inyo Death Valley National Park Comment
  CLARK-A1528-3263  Boerhavia annulata John C. Roos 1938-4-12 1634 Inyo Death Valley Comment
  CLARK-A1528-3333  Camissonia heterochroma John C. Roos, Alfred R. Roos 1954-8-14 6213 Inyo Inyo Mountains 2316 Comment
  CLARK-A1528-3511  Gilia latifolia John C. Roos 1938-4-17 1636 Inyo Death Valley Comment
  CLARK-A1528-3589  Pellaea breweri John C. Roos, Lucille Roos 1947-7-14 2852 Inyo Panamint Mountains 2651 Comment
  CLARK-A1528-3642  Chorizanthe xanti John C. Roos 1948-7-3 3902 Inyo Panamint Mountains 3047 Comment
  CLARK-A1528-3653  Eriogonum heermannii subsp. argense John C. Roos, Lucille Roos 1951-8-12 5191 Inyo White Mountains 2194 Comment
  CLARK-A1528-3660  Eriogonum intrafractum John C. Roos, Lucille Roos 1954-5-8 Inyo Grapevine Mountains 1280 Comment
  CLARK-A1528-3671  Eriogonum nidularium John C. Roos, Lucille Roos 1947-7-15 2824 Inyo Darwin Mesa Comment
  CLARK-A1528-3719  Eriogonum umbellatum John C. Roos, R. Weatherby 1949-9-2 4637 Inyo 1828 Comment
  CLARK-A1528-3744  Eriogonum polypodum John C. Roos, Alfred R. Roos 1953-8-8 5932 Inyo Badger Flat 2682 Comment
  CLARK-A1528-3752  Oxytheca dendroidea John C. Roos, Alfred R. Roos 1954-8-14 6212 Inyo 2544 Comment
  CLARK-A1528-3770  Polygonum amphibium var. emersum John C. Roos 1937-8-4 1963 Inyo Lone Pine 1127 Comment
  CLARK-A1528-3989  Cowania mexicana var. stansburyana John C. Roos 1941-8-17 71 Inyo Panamint Mountains Comment
  CLARK-A1528-4012  Peraphyllum ramosissimum John C. Roos, Lucille Roos 1952-7-31 Roos No. 5880 Inyo White Mountains 2438 Comment
  CLARK-A1528-4095  Heuchera rubescens John C. Roos 1941-8-17 49 Inyo Panamint Mountains 3200 Comment
  CLARK-A1528-4101  Jamesia americana John C. Roos 1956-9-29 6602 Inyo Panamint Mountains Comment
  CLARK-A1528-4125  Ribes cereum John C. Roos 1941-8-17 26 Inyo Panamint Mountains Comment
  CLARK-A1528-4156  Ribes velutinum John C. Roos 1948-7-3 3900 Inyo Panamint Mountains Comment
  CLARK-A1528-4174  Castilleja chromosa John C. Roos 1947-4-20 3583 Inyo Wildrose Canyon 1584 Comment
  CLARK-A1528-4232  Mimulus bigelovii John C. Roos 1965-7-10 Inyo Panamint Range Comment
  CLARK-A1528-4286  Pedicularis attollens John C. Roos 1937-8-8 1012 Inyo Sierra Nevada Comment
  CLARK-A1528-4301  Penstemon confusus John C. Roos 1958-7-5 Inyo Inyo Mountains Comment
  CLARK-A1528-4454  Andropogon glomeratus John C. Roos 1938-4-17 1622 Inyo Death Valley Comment
  CLARK-A1528-4591  Distichlis spicata John C. Roos 1965-7-11 Inyo Death Valley Junction 622 Comment
  CLARK-A1528-4700  Koeleria macrantha John C. Roos, Alfred R. Roos 1954-6-12 6134 Inyo Panamint Range 2651 Comment
  CLARK-A1528-4741  Eriogonum heermannii John C. Roos, Lucille Roos 1954-6-28 6171 Inyo Inyo Mountains 1615 Comment
  CLARK-A1528-4769  Oryzopsis hymenoides John C. Roos 1947-7-14 2854 Inyo Panamint Range 2621 Comment
  CLARK-A1528-4932  Ephedra viridis John C. Roos 1948-7-3 3906 Inyo Panamint Range 2834 Comment
  CLARK-A1528-4975  Chaenactis douglasii John C. Roos 1941-8-17 51 Inyo Panamint Mountains 3200 Comment
  CLARK-A1528-5092  Fritillaria pinetorum John C. Roos 1967-8-6 Inyo Inyo Mountains 2773 Comment
  CLARK-A1528-5104  Astragalus platytropis Alfred R. Roos, John C. Roos 1953-8-9 5961 Inyo Inyo Mountains 3078 Comment
  CLARK-A1528-5159  Jamesia americana John C. Roos 1954-6-29 6186 Inyo Inyo Mountains 2194 Comment
  CLARK-A1528-5227  Ephedra nevadensis John C. Roos 1949-9-2 4636 Inyo Kingston Mountains 1523 Comment
  CLARK-A1528-5272  Stipa pinetorum John C. Roos, Lucille Roos 1951-8-9 5121 Inyo White Mountains 3139 Comment
  CLARK-A1528-5288  Swallenia alexandrae John C. Roos 1954-6-28 6175 Inyo Eureka Valley 929 Comment
  CLARK-A1528-5294  Trisetum spicatum John C. Roos 1937-8-8 423 Inyo Lone Pine Canyon Comment
  CLARK-A1528-5353  Arctomecon merriamii John C. Roos, Lucille Roos 1954-5-8 6099 Inyo Grapevine Mountains 0 Comment
  CLARK-A1528-5371  Galium hypotrichium subsp. tomentellum John C. Roos 1941-8-17 Inyo Panamint Mountains 3291 Comment
  CLARK-A1528-5390  Lappula redowskii John C. Roos 1965-7-11 Inyo Wildrose Canyon Comment
  CLARK-A1528-5420  Nitrophila mohavensis John C. Roos 1954-7-18 6194 Inyo Death Valley Junction 624 Comment
  CLARK-A1528-5457  Chrysothamnus albidus John C. Roos 1954-8-15 6224 Inyo Saline Valley 426 Comment
  CLARK-A1528-5479  Acer glabrum John C. Roos 1947-7-13 2875 Inyo Panamint Mountains Comment
  CLARK-A1528-5546  Stipa comata John C. Roos 1947-7-12 2833 Inyo Panamint Range 2346 Comment
  CLARK-A1528-5555  Swallenia alexandrae John C. Roos, Lucille Roos 1955-4-10 6320 Inyo Eureka Valley Comment
  CLARK-A1528-5583  Oryzopsis hymenoides John C. Roos 1938-4-18 8717 Inyo Death Valley National Park Comment
  CLARK-A1528-5719  Eriogonum incanum John C. Roos 1937-8-8 Inyo Sierra Nevada Comment
  CLARK-A1528-7792  Chaenactis douglasii var. douglasii John C. Roos, Alfred R. Roos 1953-8-10 5974 Inyo Inyo Mountains 2560 Comment
  HSC78536  Atriplex parryi A. R. Roos 1950-8-7 Inyo Amargosa River Valley, Tecopa Hot Springs, ca. 2 mi. N of Tecopa 427 Comment
  LA102349  Chrysothamnus albidus John C. Roos; Lucille Roos 1954-9-14 6232 Inyo Amargosa River bottomland 3 mi. S of Shoshone 432 Comment
  LA203167  Chrysothamnus albidus J. C. Roos; A. R. Roos 1954-8-15 6224 Inyo Lower Warm Spring, Saline Valley 426 Comment
  LA69886  Salvia dorrii var. pilosa John C. Roos; Lucille Roos 1952-7-30 5859 Inyo White Mountains, E side Reed Flat 3078 Comment
  LA99548  Nitrophila mohavensis John C. Roos; Alfred R. Roos 1954-6-13 6140 Inyo Amargosa Desert, 3 mi NE of Death Valley Junction along Ash Meadows road 624 Comment
  NY215265  Streptanthus cordatus J. C. Roos 1953-8-11 6007 Inyo 3 miles east of Badger Flat, Inyo Mts. 3048.0 Comment
  NY32589  Nitrophila mohavensis J. C. Roos 1954-9-14 6234 Inyo This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY32590  Nitrophila mohavensis J. C. Roos 1954-5-7 6079 Inyo This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY651575  Penstemon scapoides J. C. Roos 1951-8-9 5122 Inyo East side Reed Flat, White Mountains 3048.0 Comment
  NY674619  Astragalus inyoensis J. C. Roos 1955-5-15 6371 Inyo 0.5 mile west of Willow Spring. Last Chance Mountains 1768 Comment
  NY675227  Astragalus kentrophyta var. elatus J. C. Roos 1953-8-9 5952 Inyo Tamarack Canyon, Inyo Mountains 3048 Comment
  NY758700  Physocarpus alternans J. C. Roos 1952-7-28 5842 Inyo Wyman Canyon, White Mountains 2682 Comment
  NY802419  Lupinus polyphyllus var. humicola J. C. Roos 1955-5-15 6374 Inyo 2 miles northeast of Willow Spring, Last Chance Mountains, almost on the Calif-Nevada state line. 2042 Comment
  OBI39262  Eriogonum umbellatum J. C. Roos 1948-7-3 3903 Inyo Arcane Meadows, Panamint Mts Comment
  POM261407  Lupinus excubitus var. excubitus J. C. Roos 1941-8-17 61 Inyo Panamint Mts. 2652 Comment
  POM261423  Viguiera multiflora var. nevadensis J. C. Roos 1941-8-17 72 Inyo Panamint Mountains; Wildrose Canyon at Kilns Comment
  POM263484  Swertia perennis J. C. Roos 1937-8-8 527 Inyo Lone Pine Canyon. 2744 Comment
  POM264156  Sibbaldia procumbens J. C. Roos 1937-8-8 535 Inyo Lone Pine Canyon. 2744 Comment
  POM265647  Silene sargentii J. C. Roos 1937-8-8 1018 Inyo Lone Pine Canyon. 3506 Comment
  POM265667  Draba lemmonii J. C. Roos 1937-8-8 1020 Inyo Steep E slope of Whitney Pass, Sierra Nevada. 3659 Comment
  POM274203  Brickellia multiflora J. C. Roos 1947-9-18 2792 Inyo Wildrose Canyon, Panamint Mts. 1067 Comment
  POM274216  Artemisia tridentata J. C. Roos 1947-9-20 2807 Inyo Panamint Mountain Range, Wildrose Canyon 2378 Comment
  POM274230  Eriogonum heermannii J. C. Roos 2830 Inyo Wildrose Canyon. Panamint Mountain Range. 1280 Comment
  POM301596  Polemonium eximium J. C. Roos 1937-8-8 1013 Inyo Whitney Pass, Southern Sierra Nevada 3354 Comment
Read comments
Mar 30 2012
  RSA100220  Astragalus lentiginosus var. micans J. C. Roos 1954-8-13 6206 Inyo West base of sand dunes, Eureka Valley. 929 Comment
  RSA104137  Chaetadelpha wheeleri J. C. Roos 1955-5-13 6364 Inyo West side Eureka Valley at mouth of Marble Canyon. 1037 Comment
  RSA104293  Eriogonum fasciculatum var. polifolium J. C. Roos 1955-5-13 6347 Inyo West base Last Chance Mountains, east of Eureka Valley sand dunes 1220 Comment
  RSA104829  Scopulophila rixfordii J. C. Roos 1955-5-13 6340 Inyo West base Last Chance Mountains, east of Eureka Valley sand dunes. 1220 Comment
  RSA105006  Aristida purpurea var. nealleyi J. C. Roos 1955-5-13 6338 Inyo West base Last Chance Mountains, east of Eureka Valley sand dunes 1220 Comment
  RSA105017  Corispermum villosum J. C. Roos 1955-5-13 6361 Inyo West side Eureka Valley at mouth of Marble Canyon. 1037 Comment
  RSA105033  Phacelia rotundifolia J. C. Roos 1955-5-13 6327 Inyo West base Last Chance Mountains east of Eureka Valley sand dunes. 1159 Comment
  RSA105043  Phacelia distans J. C. Roos 1955-5-15 6367 Inyo Last Chance Mountains: 0.5 miles west of Willow Springs. 1768 Comment
  RSA105045  Menodora spinescens J. C. Roos 1955-5-15 6369 Inyo Last Chance Mountains: 0.5 miles west of Willow Springs. 1768 Comment
  RSA155646  Crepis intermedia J. C. Roos 1955-6-17 6401 Inyo 2 miles north of Willow Spring, Last Chance Mountains. 2011 Comment
  RSA155659  Chrysothamnus viscidiflorus subsp. viscidiflorus J. C. Roos 1955-8-25 6544 Inyo Along California Nevada boundaary, 2 miles NE of Willow Spring, Last Chance Mts. 2073 Comment
  RSA155660  Chrysothamnus nauseosus subsp. hololeucus J. C. Roos 1955-8-24 6543 Inyo 1mile NE of Willow Spring 1860 Comment
  RSA155671  Calochortus bruneaunis J. C. Roos 1955-6-17 6410 Inyo 2 miles NE of Willow Springs, Last Chance Mountains. 2012 Comment
  RSA155672  Astragalus purshii var. tinctus J. C. Roos 1955-6-17 6409 Inyo 2 miles NE of Willow Springs, Last Chance Mountains. 2012 Comment
  RSA155686  Erigeron breweri var. porphyreticus J. C. Roos 1955-6-20 6456 Inyo 2 miles NE of Willow Spring. 1982 Comment
  RSA155698  Eriogonum deflexum var. baratum J. C. Roos 1955-7-22 6499 Inyo Willow Creek, W slope Last Chance Mtns. 1616 Comment
  RSA155721  Gilia ophthalmoides J. C. Roos 1955-6-17 6393 Inyo 2 miles north of Willow Spring, Last Chance Mountains. 2011 Comment
  RSA155728  Arenaria kingii subsp. compacta J. C. Roos 1955-6-19 6447 Inyo Last Chance Mountains: Whitetop Peak, 2 miles west of Last Chance Spring. 2576 Comment
  RSA155744  Pinus longaeva J. C. Roos 1955-7-21 6483 Inyo Whitetop Peak, summit Last Chance Mountains 2500 Comment
  RSA155749  Chrysothamnus viscidiflorus var. puberulus J. C. Roos 1955-7-21 6478 Inyo Ridge 2.5 mi. S of Willow Spring. 2317 Comment
  RSA157086  Eriogonum umbellatum var. versicolor J. C. Roos 1955-6-19 6432 Inyo One mile SE of Willow Spring, Last Chance Mountains. 1951 Comment
  RSA157091  Erigeron argentatus J. C. Roos 1955-6-18 6424 Inyo 2 mi. NE of Willow Spring. 2012 Comment
  RSA157092  Penstemon floridus J. C. Roos 1955-6-18 6423 Inyo 2 mi. NE of Willow Spring. 2012 Comment
  RSA157104  Allium atrorubens var. inyonis J. C. Roos 1955-6-19 6439 Inyo Last Chance Mountains, 3 miles south of Willow Spring. 2287 Comment
  RSA157865  Stenotus acaulis J. C. Roos 1955-6-19 6445 Inyo Summit ridge Last Chance Mtns., 2 miles W of Last Chance Spring. 2530 Comment
  RSA157867  Petrophytum caespitosum J. C. Roos, A. R. Roos 1955-8-26 6550 Inyo Canyon on east side of saddle between Squaw Peak and Waucoda Mt. Inyo mts. 2683 Comment
  RSA157899  Hazardia brickellioides J. C. Roos, A. R. Roos 1955-8-23 6530 Inyo W base of the mtns, E of Eureka Valley sand dunes 1220 Comment
  RSA158100  Eriogonum brachyanthum J. C. Roos 1955-7-24 6523 Inyo Nelson Range near head of Grapevine Canyon 1890 Comment
  RSA158115  Oxytheca dendroidea subsp. dendroidea J. C. Roos 1955-7-23 6504 Inyo Soldier Flat at east base Waucoba Mountain, Inyo Mountains. 2195 Comment
  RSA158995  Eriogonum panamintense var. mensicola J. C. Roos 1955-7-24 6521 Inyo Nelson Range near head of Grapevine Canyon 1890 Comment
  RSA173350  Nitrophila mohavensis J. C. Roos 1954-7-18 6194 Inyo Amargosa Desert 3 miles NE of Death Valley Junction along Ash Meadows road 625 Comment
  RSA261210  Oenothera cespitosa subsp. crinita J. C. Roos 1941-8-17 24 Inyo Telescope peak, Panamint Mts. 3354 Comment
  RSA34205  Artemisia tridentata J. C. Roos 1947-9-19 2801 Inyo Arcane Meadows, Panamint Mountains Comment
  RSA40553  Gutierrezia sarothrae J. C. Roos 1947-7-11 2842 Inyo Mahogany Flats, Panamint mtns. 2500 Comment
  RSA40580  Astragalus gilmanii J. C. Roos 1947-7-13 2887 Inyo Arcane Meadows, Panamint Mountains. 3049 Comment
  RSA40591  Jamesia americana var. californica J. C. Roos 1947-7-14 2848 Inyo Panamint Mountains, north slope of Baldy Peak 2744 Comment
  RSA40596  Achnatherum nevadense J. C. Roos 1947-7-14 2857 Inyo N slope Bady Peak, Panamint Mts 2591 Comment
  RSA41273  Ribes velutinum J. C. Roos 1941-8-17 60 Inyo Baldy Peak, Panamint Mts. 2683 Comment
  RSA413790  Lupinus magnificus var. magnificus J. C. Roos 1965-7-11 s.n. Inyo Wildrose Canyon. Panamint Mtns. Comment
  RSA424906B  Eriogonum microtheca var. lapidicola J. C. Roos 1967-8-6 s.n. Inyo Inyo Mountains, 1 mile north-east of Badger Flat. 2805 Comment
  RSA44234  Cleomella brevipes J. C. Roos, R. Weatherby 1949-9-3 3565 Inyo Tecopa 427 Comment
  RSA444469  Penstemon newberryi J. C. Roos 1965-8-9 s.n. Inyo Heart Lake, Independence Creek. Comment
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Aug 22 2011
  RSA44895  Lupinus flavoculatus J. C. Roos 1949-4-20 3588 Inyo Darwin Mesa, Mojave Desert. 1524 Comment
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Aug 28 2016
  RSA450232  Ribes montigenum J. C. Roos 1965-7-10 s.n. Inyo Arcane Meadow near Telescope Peak, Panamint Mtns. Comment
  RSA450238  Centaurium exaltatum J. C. Roos 1965-7-11 s.n. Inyo Tecopa Comment
  RSA457389  Poa bigelovii J. C. Roos 1955-4-8 6310 Inyo Last Chance Mtns, E of Eureka Valley sand dunes. aklt 4300ft, Inyo County 1311 Comment
  RSA592493  Cleomella obtusifolia J. C. Roos 1965-7-11 s.n. Inyo Death Valley Junction. Comment
  RSA61539  Cordylanthus tecopensis J. C. Roos 1950-8-7 4929 Inyo Tecopa Hot Springs 427 Comment
  RSA648014  Mirabilis froebelii J. C. Roos 1965-7-11 s.n. Inyo Wildrose Canyon. Panamint Mtns. Comment
  RSA658427  Aster hesperius J. C. Roos 1965-9-18 s.n. Inyo Owens Valley west side of Owens Lake 1098 Comment
  RSA658698  Lepidium flavum J. C. Roos 1969-12-22 3000 Inyo Near Keeler. 915 Comment
  RSA659491  Euphorbia ocellata subsp. ocellata J. C. Roos, L. Roos 1954-6-28 6180 Inyo SE end of Eureka Valley. Comment
  RSA659605  Castilleja nana J. C. Roos 1967-8-5 s.n. Inyo Summit Ridge eadt of Badger flat. 3201 Comment
  RSA659607  Jamesia americana var. rosea J. C. Roos 1956-9-29 6602 Inyo Head of Death Valley Canyon, Panamint Mtns. At the base of limestone cliffs. Comment
  RSA659659  Rosa woodsii J. C. Roos 1948-7-4 s.n. Inyo Thorndykes Spring, Panamint Mtns. Comment
  RSA659660  Sibbaldia procumbens J. C. Roos 1937-8-8 535 Inyo Lone Pine Canyon. 3049 Comment
  RSA662413  Koeleria macrantha J. C. Roos, A. R. Roos 1953-8-9 5948 Inyo Tamarack Canyon, Inyo Mts. 2774 Comment
  RSA71677  Crepis intermedia J. C. Roos, L. Roos 1951-8-10 10500 Inyo Head of Wyman Cnayon, White Mts. 3201 Comment
  RSA71712  Achnatherum webberi J. C. Roos, L. Roos 1952-7-25 5819 Inyo Between Westgaard Pass and Reed Flat, White Mtns. 2439 Comment
  RSA71731  Mimulus nanus var. mephiticus J. C. Roos, Lucille Roos 1952-7-28 5846 Inyo Drying seep with Artemisia nova, lappula Redowskii, etc., Wyman Canyon, White Mts. 2622 Comment
  RSA71736  Penstemon scapoides J. C. Roos, Roos 1952-7-28 5853 Inyo White Mountains: Wyman Canyon 2744 Comment
  RSA71738  Navarretia breweri J. C. Roos, L. Roos 1952-7-28 5855 Inyo White Mountains; head of Wyman Canyon 3201 Comment
  RSA71740  Astragalus oophorus J. C. Roos, Lucille Roos 1952-7-29 5857 Inyo Reed Flat, White Mts. Comment
  RSA71742  Salvia dorrii subsp. dorrii J. C. Roos 1952-7-30 5859 Inyo East side Reed Flat, White Mts. 3049 Comment
  RSA71762  Lupinus caespitosus J. C. Roos 1951-8-8 5108 Inyo Reed flat, White Mts. 3171 Comment
  RSA72063  Leymus cinereus J. C. Roos, L. Roos 1951-8-12 5185 Inyo Reed Flat, White Mountains. 3110 Comment
  RSA72064  Elymus trachycaulus subsp. trachycaulus J. C. Roos, L. Roos 1951-8-12 5184 Inyo Reed Flat, White Mountains 3171 Comment
  RSA72075  Stephanomeria spinosa J. C. Roos, Lucille Roos 1951-8-12 5192 Inyo Westgard Pass, White Mountains. 2195 Comment
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Aug 22 2011
  RSA74555  Elymus X hansenii J. C. Roos, L. Roos 1951-8-8 5094 Inyo Head of Wyman Canyon, White Mountains. 3171 Comment
  RSA74562  Chrysothamnus parryi subsp. asper J. C. Roos 1951-8-8 5114 Inyo SE rim Reed flat, White Mts 3079 Comment
  RSA74602  Cordylanthus kingii subsp. helleri J. C. Roos, Lucille Roos 1952-7-25 5818 Inyo between Westgaard Pass and Reed Flat, White MTs. Comment
  RSA79478  Elymus X hansenii J. C. Roos, A. R. Roos 1952-8-13 6016 Inyo Along crest of Inyo Mountains, 3 miles east of Badger Flat. Alt. 10600 ft. 3232 Comment
  RSA79481  Achnatherum hymenoides J. C. Roos, A. R. Roos 1953-8-13 6013 Inyo Along crest of Inyo Mountains, 3 miles east of Badger Flats 3171 Comment
  RSA79486  Salsola tragus J. C. Roos, A. Roos 1953-8-13 6008 Inyo Tamarack Canyon. 2744 Comment
  RSA79490  Chenopodium atrovirens J. C. Roos, A. Roos 1953-8-11 6004 Inyo In pass 3 miles east of Blue Bell Mine on trail to Side Hill Spring. 3108 Comment
  RSA79502A  Juniperus osteosperma J. C. Roos, A. R. Roos 1953-8-14 6023 Inyo Badger Flat, Inyo Mts. 2621 Comment
  RSA79505  Chrysothamnus viscidiflorus subsp. viscidiflorus J. C. Roos 1953-8-13 6020 Inyo top of ridge, crest of Inyo Mts, 3 miles E of Badger Flat. 3338 Comment
  RSA79542  Stephanomeria spinosa J. C. Roos, A. R. Roos 1953-8-11 5991 Inyo 2 miles east of Blue Bell Mine, Inyo Mts. 2866 Comment
  RSA79555  Silene bernardina J. C. Roos, A. R. Roos 1953-8-11 5996 Inyo Loose alluvial soil on brushy flatss, 2.5 miles east of Blue Bell Mine. 2927 Comment
  RSA79622  Gilia congesta J. C. Roos, A. R. Roos 1953-8-7 5929 Inyo Blue Bell Mine, Badger Flat, Inyo Mtns. 2683 Comment
  RSA79645  Perityle megalocephala var. megalocephala J. C. Roos 1953-8-10 5979 Inyo Juniper belt, Mazourka Canyon, Inyo Mts. 2500 Comment
  RSA79650  Chaenactis douglasii var. douglasii J. C. Roos, A. R. Roos 1953-8-10 5974 Inyo Badger Flat, Inyo Mts 2561 Comment
  RSA79692  Castilleja nana J. C. Roos, A. R. Roos 1953-8-9 5960 Inyo Near head of Tamarack Canyon 3049 Comment
  RSA79702  Hymenopappus filifolius var. nanus J. C. Roos 1953-8-9 5950 Inyo Tamarack Canyon. 2988 Comment
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Aug 3 2010
  RSA79715  Ribes cereum J. C. Roos, A. R. Roos 1953-8-9 5970 Inyo Ridge southeast of Tamarack Canyon, Inyo Mountains 3232 Comment
  RSA85158  Cyperus laevigatus J. C. Roos, L. Roos 1953-11-2 6042 Inyo Tecopa Hot Springs. 427 Comment
  RSA85282  Atriplex confertifolia J. C. Roos, A. Roos 1950-8-7 4925 Inyo Tecopa, Eastern Mojave Desert. Comment
  RSA89888  Cordylanthus tecopensis J. C. Roos 1954-9-14 6231 Inyo Amargosa River bottomland, 3 mi. S of Shoshone. 433 Comment
  SBBG16843  Hazardia brickellioides J. C. Roos, A. R. Roos 1955-8-23 6530 Inyo W base of Last Chance Mtns, E of Eureka Valley sand dunes 1219 Comment
  SD52863  Chrysothamnus viscidiflorus subsp. puberulus J. C. Roos 1955-7-21 6478 Inyo Ridge of Last Chance Mountains, 2.5 miles south of Willow Spring. 2315 Comment
  SD52918  Cordylanthus eremicus subsp. eremicus J. C. Roos 1955-7-24 6522 Inyo Nelson Range near head of Grapevine Canyon 1890 Comment
  SD52928  Chrysothamnus viscidiflorus var. viscidiflorus A. R. Roos, J. C. Roos 1955-8-26 6553 Inyo North shoulder Waucoba Mountain. 3200 Comment
  SD52934  Ericameria nana J. C. Roos, A. R. Roos 1955-8-24 6538 Inyo Summit ridge of Last Chance Mountains, 3.5 miles south of Willow Spring 2440 Comment
  SD52946  Stipa occidentalis var. occidentalis J. C. Roos, A. R. Roos 1955-8-26 6556 Inyo Locally common on moist (thunderstorms) rocky open north slope. North shoulder Waucoba Mountain, Inyo Mountains. 3353 Comment
  SD52950  Swertia albomarginata J. C. Roos 1955-6-19 6437 Inyo 2.5 miles south of Willow Spring; Last Chance Mountains. 2316 Comment
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Sep 5 2013
  SD52997  Ericameria discoidea J. C. Roos, A. R. Roos 1955-8-26 6552 Inyo North shoulder Waucoba Mountain; Inyo Mountains. 3265 Comment
  SD53000  Hazardia brickellioides J. C. Roos 1955-7-23 6513 Inyo Beveridge Canyon, east base Inyo Mountains, Saline Valley 640 Comment
  SD53005  Eriogonum heermannii var. argense J. C. Roos, A. R. Roos 1955-8-24 6537 Inyo Ridge 2 miles south of Willow Spring, Last Chance Mts. 2286 Comment
  SD53017  Streptanthus cordatus J. C. Roos 1955-6-17 6399 Inyo 2.0 miles northeast of Willow Spring, Last Chance Mountains. 2010 Comment
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Nov 4 2011
  SEINET4310255 Image available Lomatium foeniculaceum subsp. inyoense J. C. Roos 1958-1 Inyo Near Badger Flat, Inyo Mts., Inyo Co., Calif. Comment
  UC1010180  Lupinus lepidus var. utahensis John and Lucille Roos 1951-8-8 5108 Inyo Reed Flat White Mountains 3139 Comment
  UC1010186  Eriogonum umbellatum var. versicolor John and Lucille Roos 1951-8-9 5126 Inyo Reed Flat White Mts., Reed Flat 3169 Comment
  UC1010211  Physalis pubescens var. grisea J. C. and A. R. Roos 1954-8-15 6221 Inyo below mouth of Hunter Canyon (Saline Valley); Saline Valley 365 Comment
  UC1010255  Cercocarpus ledifolius var. intermontanus J. C. and A. R. Roos 1953-8-13 6009 Inyo Tamarack Canyon, Inyo Mountains Tamarack Canyon; Inyo Mountains, Tamarack Canyon 2743 Comment
  UC1010257  Astragalus newberryi J. C. and A. R. Roos 1953-8-9 5957 Inyo Tamarack Canyon , Tamarack Canyon (Inyo Mts.) 3048 Comment
  UC1010261  Stenotus acaulis J. C. and A. R. Roos 1953-8-9 5969 Inyo S. E. of head of Tamarack Canyon, Inyo Mts. 3230 Comment
  UC1010262  Ribes cereum J. C. and A. R. Roos 1953-8-9 5970 Inyo se Tamarack Canyon; Inyo Mts. 3230 Comment
  UC1010270  Chaetadelpha wheeleri John and Lucille Roos 1954-6-28 6174 Inyo se end of Eureka Valley 929 Comment
  UC1010326  Cuniculotinus gramineus J. C. and A. R. Roos 1953-8-9 5945 Inyo Inyo Mts., Tamarack Canyon 2682 Comment
  UC1010335  Astragalus kentrophyta var. tegetarius J. C. and A. R. Roos 1953-8-9 5952 Inyo Tamarack Canyon , Tamarack Canyon (Inyo Mts.) 3048 Comment
  UC1010337  Chrysothamnus viscidiflorus subsp. puberulus J. C. and A. R. Roos 1953-8-8 5933 Inyo Blue Bell Mine Inyo Mts., Badger Flat 2682 Comment
  UC1010486  Nitrophila mohavensis John C. Roos 1954-7-18 Inyo along Ash Meadows road 3 mi ne Death Valley Junction; Amorgosa Desert 624 Comment
  UC1023378  Achnatherum John and Lucille Roos 1952-8-8 5092 Inyo 3 mi nw Cedar Flat; White Mts. 2590 Comment
  UC1023398  Achnatherum J. C. and A. R. Roos 1953-8-13 6014 Inyo 3 mi e Badger Flat; Crest of Inyo Mts. 3169 Comment
  UC1023400  Achnatherum parishii J. C. and A. R. Roos 1953-8-14 6025 Inyo Al Rose Canyon Inyo Mts. 2499 Comment
  UC1026577  Achnatherum pinetorum J. C. and A. R. Roos 1954-6-12 6132 Inyo 1 mi ese Wild Rose Peak (ridge between Wild Rose and Trail Canyons); Panamint Mts. 2499 Comment
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Jan 20 2012
  UC1042983  Hesperostipa comata John and Lucille Roos 1954-6-26 6162 Inyo canyon at se end Badger Flat; Inyo Mts., Mazourka Canyon 2621 Comment
  UC1042987  Petalonyx nitidus John and Lucille Roos 1954-6-28 6169 Inyo w. side Eureka Valley (Loretto Rd.); Inyo Mts., Eureka Valley 1676 Comment
  UC1043012  Ericameria albida John and Lucille Roos 1954-11-23 6260 Inyo 1.4 mi s of Lower Warm Springs; Saline Valley 381 Comment
  UC1080599  Oenothera californica subsp. eurekensis John C. Roos 1955-5-13 6356 Inyo se end Eureka Valley 944 Comment
  UC1080601  Acamptopappus shockleyi John C. Roos 1955-5-13 6345 Inyo e, in sand dunes, at w base of Last Chance Mts Eureka Valley; Last Chance Mts. 1280 Comment
  UC1080602  Hecastocleis shockleyi John C. Roos 1955-5-13 6348 Inyo e Eureka Valley sand dunes (w base of mountains); Last Chance Mts. 1310 Comment
  UC1080614  Ribes velutinum John C. Roos 1955-5-15 6368 Inyo 0.5 miles west of Willow Spring Last Chance Mts. 1767 Comment
  UC1080634  Oenothera californica subsp. eurekensis John C. Roos 1955-5-13 6362 Inyo mouth of Marble Canyon Eureka Valley (w side of valley) 1036 Comment
  UC1087305  Tricardia watsonii John C. Roos 1955-5-15 6376 Inyo 1 mile southeast of Willow Spring, Last Chance Mountains 1950 Comment
  UC1117457  Achnatherum thurberianum J. C. Roos 1955-6-21 6462 Inyo 2 mi ne Willow Spring; Last Chance Mountains 1950 Comment
  UC1117461  Muhlenbergia porteri J. C. and A. R. Roos 1955-8-23 6534 Inyo e Eureka Valley sand dunes; west base Last Chance Mts. 1219 Comment
  UC1234678  Eriogonum cernuum var. cernuum J. C. Roos 1955-7-23 6507 Inyo Soldier Flat at e base of Waucoba Mountain Inyo Mountains, Waucoba Mountain 2194 Comment
  UC1234819  Tetradymia glabrata J. C. Roos 1955-6-21 6469 Inyo 1.5 mi sw Loretto mine (along Loretto road, e slope Inyo Mountains); Inyo MOuntains 1676 Comment
  UC1234822  Keckiella rothrockii J. C. Roos 1955-7-21 6494 Inyo 1 mi s Willow Spring; Last Chance Mountains 2072 Comment
  UC1234828  Fraxinus anomala J. C. Roos 1955-6-19 6441 Inyo 3 mi s Willow Springs; Last Chance Mountains 2377 Comment
  UC1234844  Gutierrezia microcephala J. C. and A. R. Roos 1955-8-24 6540 Inyo 1.5 mi ne Willow Springs; Last Chance Mts. 1889 Comment
  UC1234849  Heliomeris multiflora var. nevadensis J. C. Roos 1955-6-17 6400 Inyo 2 mi ne Willow Spring; Last Chance Mountains 2011 Comment
  UC1234856  Swertia albomarginata J. C. Roos 1955-6-19 6437 Inyo 2.5 mi s Willow Spring; Last Chance Mountains 2316 Comment
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Sep 5 2013
  UC1234864  Phacelia curvipes J. C. Roos 1955-6-17 6417 Inyo 2 mi ne Willow Spring; Last Chance Mountains 2011 Comment
  UC1234869  Calochortus bruneaunis J. C. Roos 1955-6-17 6410 Inyo 2 mi ne Willow Spring; Last Chance Mountains 2011 Comment
  UC1234873  Galium multiflorum J. C. Roos 1955-6-17 6419 Inyo 2 mi ne Willow Spring; Last Chance Mountains 2011 Comment
  UC1236238  Ribes velutinum John C. Roos 1955-5-15 6368 Inyo 0.5 mi w Willow Springs; Last Chance Mts. 1767 Comment
  UC1236255  Phacelia perityloides John C. Roos 1955-5-13 6331 Inyo e Eureka Valley sand dunes; west base Last Chance Mts. 1219 Comment
  UC1236257  Chaetadelpha wheeleri John C. Roos 1955-5-13 6357 Inyo se end of Eureka Valley 975 Comment
  UC1236268  Eriogonum fasciculatum var. polifolium John C. Roos 1955-5-13 6347 Inyo e Eureka Valley Sand Dunes (west base Last Chance Mts.); Last Chance Mts. 1219 Comment
  UCD132107  Eriophyllum ambiguum J. C. Roos; A. R. Roos 1954-6-11 6128 Inyo upper Wild Rose Canyon near Wild Rose Peak, Panamint Mountains. 2316 Comment
  UCD135001  Psathyrotes annua J. C. Roos 1965-9-18 s.n. Inyo Argus Mountains, near Crowley Point. Comment
  UCD136547  Symphyotrichum bracteolatum J. C. Roos 1965-9-18 s.n. Inyo west side of Owens Lake. Comment
  UCR18743  Cryptantha tumulosa John C. Roos, A. R. Roos 1954-6-12 6137 Inyo Northern Mojave Desert, Panamint Mountains, Wildrose Peak 2759 Comment
  UCR18766  Arabis perennans John C. Roos 1948-7-2 3907 Inyo Northern Mojave Desert, Panamint Mouontains, Mahogany Flats 2409 Comment
  UCR18797  Cryptantha roosiorum John C. Roos 1958-7-5 s.n. Inyo Northern Mojave Desert, Inyo Mountains, near Badger Flats 2683 Comment
  UCR18800  Cryptantha confertiflora John C. Roos 1947-4-20 3576 Inyo Northern Mojave Desert, Panamint Mountains near Telescope Peak, Wildrose Canyon 1585 Comment
  UCR18886  Scopulophila rixfordii John C. Roos, L. Roos 1954-5-8 6097 Inyo Northern Mojave Desert, Grapevine Mountains, Titus Canyon, below Leadfield 1372 Comment
  UCR18971  Chenopodium leptophyllum John C. Roos 1967-4-6 s.n. Inyo Inyo Mtns, Al Rose Canyon 2054 Comment
  UCR18976  Cordylanthus tecopensis John C. Roos, A. R. Roos 1954-6-13 6139 Inyo Northern Mojave Desert, Amargosa Desert, 3 mi. NE of Death Valley Junction, along Ash Meadows road 625 Comment
  UCR18983  Astragalus kentrophyta John C. Roos, L. Roos 1952-7-26 5820 Inyo White Mtns, east side of Reed Flat, at the head of Birch Creek 3049 Comment
  UCR19022  Monolepis nuttalliana John C. Roos, L. Roos 1952-7-28 5852 Inyo White Mountains, roadside at head of Wyman Canyon 3140 Comment
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May 8 2011
  UCR19117  Mentzelia reflexa John C. Roos 1947-4-19 3480 Inyo Northern Mojave Desert, Death Valley [National Park], near Zabriskie Point 215 Comment
  UCR19477  Pellaea breweri John C. Roos 1947-7-13 2893 Inyo Northern Mojave /Great Basin Desert, Panamint Mountains, Death Valley National Monument [Park], Telescope Peak 3354 Comment
  UCR19502  Pyrrocoma racemosa var. sessiliflora John C. Roos 1965-9-18 s.n. Inyo Owens Valley, Lone Pine 1143 Comment
  UCR19537  Ericameria discoidea John C. Roos 1959-8-20 s.n. Inyo White Mtns., Reed Flat 3049 Comment
  UCR19731  Petradoria discoidea John C. Roos, A. R. Roos 1953-8-9 5945 Inyo Inyo Mtns, Tamarack Canyon 2744 Comment
  UCR19736  Calochortus bruneaunis John C. Roos, L. Roos 1952-7-26 5823 Inyo White Mtns, east side of Reed Flat, at the head of Birch Creek 3049 Comment
  UCR20333  Calochortus panamintensis John C. Roos, L. Roos 1954-6-25 6153 Inyo Inyo Mtns., North end of Badger Flat 2683 Comment
  UCR20340  Cryptantha circumscissa John C. Roos, A. R. Roos 1954-6-11 6126 Inyo Northern Mojave Desert, Panamint Mountains, Mahogany Flats 2500 Comment
  UCR20387  Scrophularia desertorum John C. Roos, A. R. Roos 1953-8-14 6026 Inyo Inyo Mtns., Al Rose Canyon 2500 Comment
  UCR20395  Brickellia longifolia John C. Roos 1956-9-30 6603 Inyo Northern Mojave Desert, Panamint Mtns, Wildrose Cyn, at Wildrose [Ranger] Station Comment
  UCR20425  Astragalus nutans John C. Roos 1947-7-13 2887 Inyo Northern Mojave /Great Basin Desert, Panamint Mtns, Arcane Meadows, between Baldy [=Rogers?] and Telescope Peaks 3018 Comment
  UCR20434  Keckiella rothrockii John C. Roos 1947-7-13 2884 Inyo Northern Mojave /Great Basin Desert, Panamint Mountains, east slope of Baldy [= Rogers?] Peak [near Arcane Meadow] Comment
  UCR20460  Swallenia alexandrae John C. Roos, L. Roos 1954-6-28 6175 Inyo Northern Mojave Desert, N slope of sand dunes at SE end of Eureka Valley 930 Comment
  UCR20610  Sitanion longifolium John C. Roos 1947-7-13 2890 Inyo Panamint Mtns, Near Arcane Meadows, south of Baldy Peak 3018 Comment
  UCR23502  Petrophytum caespitosum John C. Roos, A. R. Roos 1955-8-26 s.n. Inyo In a canyon on the E side of the saddle between Squaw Peak and Waucoba Mountain 2683 Comment
  UCR23588  Cryptantha flavoculata John C. Roos 1955-5-15 6378 Inyo Northern Mojave Desert, Last Chance Mtns, 1 mi SE of Willow Spring 1840 Comment
  UCR23590  Cryptantha confertiflora John C. Roos 1955-5-15 6377 Inyo Last Chance Mtns, 1 mi east of Willow Spring 1951 Comment
  UCR23633  Caulanthus glaucus John C. Roos 1955-5-16 6384 Inyo Inyo Mountains, narrow canyon 1.5 mi SW of Loretto Mine along Loretto Rd. 1677 Comment
  UCR23638  Monardella linoides John C. Roos 1981-8-29 6593 Inyo Northern Mojave Desert, At head of Death Valley Canyon, in the Panamint Mtns 2300 Comment
  UCR23660  Brickellia longifolia John C. Roos 1961-10-22 s.n. Inyo Owens Valley, West side of Owens Lake, near Columbia Southern Chemical Company 1159 Comment
  UCR23777  Hulsea algida John C. Roos 1937-8-8 1019 Inyo Sierra Nevada Mtns., Lone Pine Canyon below Mt. Whitney 3506 Comment
  UCR23801  Haplopappus brickellioides John C. Roos, L. Roos 1955-4-6 6292 Inyo Northern Mojave Desert, Saline Valley, mouth of Craig Canyon, E base of Inyo Mtns. 534 Comment
  UCR23806  Helianthus annuus subsp. jaegeri John C. Roos, L. Roos 1951-8-12 5195 Inyo Lone Pine 1143 Comment
  UCR23856  Trifolium monoense John C. Roos 1962-8-25 s.n. Inyo Northern Mojave Desert, SW shoulder of Waucoba Mtn, Inyo Mtns Comment
  UCR23896  Haplopappus brickellioides John C. Roos 1955-8-23 6530 Inyo Last Chance Mtns., west base of Last Chance Mtns, east of Eureka Valley sand dunes 1220 Comment
  UCR23906  Astragalus layneae John C. Roos, L. Roos 1955-4-7 6300 Inyo Northern Mojave Desert, N end of Saline Valley near Waucoba Wash 1616 Comment
  UCR23956  Astragalus atratus John C. Roos, P. A. Munz 1955-4-8 6304 Inyo Northern Mojave Desert, Last Chance Mtns, east of Eureka Valley sand dunes 1220 Comment
  UCR23969  Bromus trinii John C. Roos 1955-5-13 6330 Inyo Northern Mojave Desert, west base of Last Chance Mtns, east of Eureka Valley sand dunes 1223 Comment
  UCR24111  Chenopodium rubrum John C. Roos, A. R. Roos 1955-8-28 6567 Inyo Owens Valley, on the west side of Owens Lake, 3 miles north of Olancha 1082 Comment
  UCR24116  Atriplex hymenelytra John C. Roos 1954-11-23 s.n. Inyo Northern Mojave Desert, Lower Warm Spring, Saline Valley 427 Comment
  UCR24127  Tetradymia glabrata John C. Roos 1955-6-21 6469 Inyo Inyo Mtns, Narrow canyon along Loretto Rd. 1.5 mi SW of Loretto Mine, E slope of mtns 1677 Comment
  UCR24129  Tetradymia glabrata John C. Roos 1955-5-16 6387 Inyo Northern Mojave Desert, Inyo Mountains, narrow canyon 1.5 mi SW of Loretto Mine along Loretto Rd. 1677 Comment
  UCR24213  Eriogonum trichopes John C. Roos 1955-7-24 6520 Inyo Northern Mojave Desert, Nelson Range near head of Grapevine Canyon 1890 Comment
  UCR24241  Polemonium eximium John C. Roos 1937-8-8 1013 Inyo Sierra Nevada Mtns., Lone Pine Canyon below Mt. Whitney 3506 Comment
  UCR24264  Eriogonum fasciculatum subsp. polifolium John C. Roos 1955-5-13 6347 Inyo Northern Mojave Desert, west base of Last Chance Mountains, east of Eureka Valley sand dunes 1220 Comment
  UCR24300  Swallenia alexandrae John C. Roos, L. Roos 1955-4-10 6320 Inyo Northern Mojave Desert, Eureka Valley 945 Comment
  UCR24337  Gilia filiformis John C. Roos, L. Roos 1961-5-6 s.n. Inyo Northern Mojave Desert, Coso Mountains 1189 Comment
  UCR24474  Cordylanthus tecopensis John C. Roos, L. Roos 1954-9-15 6243 Inyo Northeastern Mojave Desert, between Tecopa and Tecopa Hot Springs 427 Comment
  UCR24478  Cordylanthus kingii subsp. helleri John C. Roos 1955-7-20 6475 Inyo Last Chance Mtns. 2 mi east of Willow Spring, at boundary marker number 80 2134 Comment
  UCR25372  Koeleria macrantha John C. Roos, A. R. Roos 1954-6-12 6134 Inyo Northern Mojave Desert, Panamint Mountains, Wildrose Peak 2652 Comment
  UCR25426  Erigeron aphanactis John C. Roos, L. Roos 1954-6-28 6170 Inyo Inyo Mtns, Loretto Road, above Loretto Mine 1646 Comment
  UCR25623  Stipa pinetorum John C. Roos, A. R. Roos 1953-8-8 5939 Inyo Inyo Mtns, Badger Flat 2652 Comment
  UCR25682  Monardella odoratissima John C. Roos, A. R. Roos 1953-8-9 5951 Inyo Inyo Mtns, Tamarack Canyon 2744 Comment
  UCR25942  Atriplex hymenelytra John C. Roos 1947-1-25 3212 Inyo Northern Mojave Desert, Death Valley National Monument [Park], Badwater -61 Comment
  UCR26132  Eriophyllum ambiguum John C. Roos, A. R. Roos 1954-6-11 6128 Inyo Northern Mojave Desert, Panamint Mountains, upper Wildrose Canyon near Wildrose Peak 2317 Comment
  UCR26148  Mentzelia nitens John C. Roos 1947-4-19 3467 Inyo Northern Mojave Desert, Death Valley National Monument [Park], canyon east of Dantes View 1646 Comment
  UCR26175  Penstemon fruticiformis subsp. fruticiformis John C. Roos 1947-7-15 2867 Inyo Panamint Mtns, Wildrose Canyon in the Mtns, Death Valley National Monument 1677 Comment
  UCR26207  Rosa woodsii John C. Roos 1948-7-4 3912 Inyo Panamint Mtns., Thorndike's Spring 2165 Comment
  UCR26229  Eriogonum rixfordii John C. Roos 1947-1-26 3200 Inyo Emigrant Canyon below Emigrant Spring, Death Valley 1150 Comment
  UCR26261  Mirabilis bigelovii John C. Roos 1965-7-11 s.n. Inyo Northern Mojave Desert, Panamint Mtns: Wildrose Canyon at and below the Charcoal Kilns 2134 Comment
  UCR26266  Apocynum cannabinum John C. Roos 1965-7-11 s.n. Inyo Northern Mojave Desert, Emigrant Spring, Death Valley 1250 Comment
  UCR27470  Eriogonum nummulare John C. Roos, A. R. Roos 1954-8-15 6219 Inyo Northern Mojave Desert, Inyo Mtns., Whipoorwill (or Soldier) flat at east side of Waucoba Mtn. 2165 Comment
  UCR27498  Eriastrum wilcoxii John C. Roos 1948-7-4 3915 Inyo Northern Mojave Desert, Thorndike Camp, upper Wildrose Canyon, Panamint Mountains 2264 Comment
  UCR27544  Phlox viridis John C. Roos 1947-4-20 3580 Inyo Northern Mojave Desert, Panamint Mountains near Telescope Peak, Wildrose Canyon 1585 Comment
  UCR27656  Eriogonum deflexum John C. Roos 1947-4-18 3456 Inyo Northern Mojave Desert, Shoshone 457 Comment
  UCR27667  Orobanche corymbosa John C. Roos 1967-8-5 s.n. Inyo Northern Mojave Desert, Inyo Mtns., Side Hill Spring 3049 Comment
  UCR30473  Salsola gobicola John C. Roos, A. R. Roos 1953-8-13 6008 Inyo Inyo Mtns, Tamarack Canyon 2744 Comment
  UCR30474  Silene bernardina John C. Roos, A. R. Roos 1953-8-11 5996 Inyo Northern Mojave/Great Basin Desert, Inyo Mtns: 2-2.5 mi east of Blue Bell Mine 2866 Comment
  UCR30478  Lesquerella kingii John C. Roos, A. R. Roos 1953-8-11 6006 Inyo Northern Mojave Desert, Canyon 3 mi east of Badger Flat, Inyo Mtns. 3110 Comment
  UCR30555  Astragalus layneae John C. Roos 1938-4-15 1624 Inyo Owens Valley, Olancha 1115 Comment
  UCR30577  Pluchea sericea John C. Roos, A. R. Roos 1950-8-7 s.n. Inyo Northern Mojave Desert, China Ranch near Tecopa Pass 427 Comment
  UCR30600  Tidestromia oblongifolia John C. Roos, A. R. Roos 1950-8-7 s.n. Inyo Northern Mojave Desert, China Ranch near Tecopa Pass 427 Comment
  UCR31671  Cryptantha echinella John C. Roos 1948-7-3 3899 Inyo Northern Mojave Desert, Panamint Mountains, Arcane Meadows 3018 Comment
  UCR31676  Aster pauciflorus John C. Roos, A. R. Roos 1950-8-7 4923 Inyo Northern Mojave Desert, Tecopa in Amargosa River Valley 427 Comment
  UCR34460  Tetradymia spinosa var. longispina John C. Roos 1947-4-19 3479 Inyo Northern Mojave Desert, Death Valley National Monument [Park], canyon east of Dantes View 1646 Comment
  UCSB37343  Chloropyron tecopense Roos, John; Roos, Lucille 1954-9-14 Inyo Flats along Amargosa River bottom 3 miles south of Shoshone 432 Comment
  UCSB37491  Nitrophila mohavensis Roos, J. Inyo Amargosa Desert 3 mi. NE Death Valley Junction along Ash Meadow Road 624 Comment
  UCSB40904  Swallenia alexandrae John C. Roos and Lucille Roos 1954-6-28 6175 Inyo collected in the N-slope of sand dune at SE-end of the Eureka Valley Eureka Valley 929 Comment
  UCSB42199  Prosopis glandulosa var. torreyana Roos, John 1965-7-11 Inyo Warm Springs, Furnace Creek, Death Valley Comment
  UCSB42201  Prosopis pubescens Roos, John 1965-7-11 Inyo Warm Springs, Furnace Creek, Death Valley Comment
  UCSB45532  Penstemon speciosus Roos, John; Roos, Lucille 1954-6-29 Inyo The Narrows, Marble Canyon, Inyo Mtns. 2194 Comment
  UCSB45561  Cryptantha flavoculata Roos, John 1958-7-5 Inyo Near Badger Flat, Inyo Mtns. Comment
  UCSB45562  Cirsium arizonicum Roos, John; Roos, Alfred 1953-8-9 Inyo Tamarack Canyon, Inyo Mts. 2743 Comment
  UCSB45607  Chamaesyce ocellata Roos, John; Roos, Lucille 1954-6-28 Inyo SE end of Eureka Valley 914 Comment
  UCSB45961  Poa bigelovii Roos, John 1955-4-8 Inyo Last Chance Mtns.; east of Eureka Valley sand dunes 1310 Comment
  UCSB46885  Suaeda nigra Roos, A. 1950-8-7 Inyo Tecopa Hot Springs; about 2 miles north of Tecopa; in the Amargosa River Valley 426 Comment
  UCSB51367  Andropogon glomeratus Roos, John 1965-7-11 Inyo Furnace Creek, Death Valley Comment
  CAS-BOT-BC181066  Glossopetalon spinescens J. C. Roos; L. Roos 1955-4-11 6321 Inyo Unspecified 1706 Comment
  CAS-BOT-BC209176  Dichanthelium acuminatum subsp. acuminatum J. C. Roos 1955-7-23 6511 Inyo Mouth of Beveridge Canyon, east base of Inyo Mts., Saline Valley 609 Comment
  CAS-BOT-BC215319  Lupinus excubitus var. excubitus John Roos; Lucille Roos 1947-7-13 2862 Inyo Baldy Peak, Panamint Mountains 2621 Comment
  CAS-BOT-BC241749  Eriogonum brachypodum J. C. Roos 1965-7-10 s.n. Inyo South slope trail to Telescope Peak, Panamint Mtns. 2743 Comment
  CAS-BOT-BC249844  Eriogonum esmeraldense var. esmeraldense J. C. Roos; A. R. Roos 1955-8-26 6549 Inyo East side of saddle between Squaw Peak and Waucoba Mt., Inyo Mts. 2590 Comment
  CAS-BOT-BC265440  Penstemon floridus var. austinii John Roos; Lucille Roos 1954-6-26 6163 Inyo Upper Mazourka Canyon, Inyo Mountains 2438 Comment
  CAS-BOT-BC292157  Dicoria canescens J. C. Roos; Philip A. Munz 1954-9-18 20157 Inyo At s.e. end of Eureka Valley, e. of Inyo Range 914 Comment
  CAS-BOT-BC298129  Ericameria nauseosa var. oreophila John Roos; Lucille Roos 1947-9-19 2804 Inyo E slope Baldy Peak, Panamint Mts 2743 Comment
  CAS-BOT-BC314406  Hecastocleis J. C. Roos; P. A. Munz 1955-4-8 6308 Inyo Last Chance Mtns. east of the Eureka Valley sand dunes 1310 Comment
  CAS-BOT-BC330670  Acer glabrum var. diffusum A. R. Roos; J. C. Roos 1947-7-13 2875 Inyo Ridge between Telescope and Baldy Peaks, Panamint Mts. 3048 Comment
  CAS-BOT-BC375460  Stephanomeria exigua subsp. exigua J. C. Roos; E. C. Jaeger 1955-7-21 6477 Inyo Last Chance Mountains 2 miles NE of Willow Spring 2011 Comment
  CAS-BOT-BC438164  Sesuvium verrucosum J. C. Roos 1955-7-24 6524 Inyo 0.5 mile east of Olancha at south end Owens Lake. 1097 Comment
  CAS-BOT-BC514443  Eriastrum eremicum subsp. eremicum John Roos; Lucille Roos 1947-7-15 2825 Inyo Darwin Mesa 1524 Comment
  CAS-BOT-BC67979  Cystopteris fragilis John Roos; Lucille Roos 1947-7-14 2853 Inyo Panamint Mts. - rocks in steep canyon on north slope of Baldy Peak. 2621 Comment
  CAS-BOT-BC93726  Artemisia ludoviciana subsp. albula John Roos; Lucille Roos 1947-9-20 2814 Inyo Emigrant Wash near Emigrant Spring, Panamint Mts. 1249 Comment
  CAS-BOT-BC99294  Artemisia tridentata subsp. vaseyana J. C. Roos; A. R. Roos 1954-8-14 6210 Inyo 1 1/2 miles east of Andrews Mtn. - Inyo Mts. 2560 Comment
  CLARK-A1528-1128  Oxystylis lutea John C. Roos 1965-7-11 Inyo Eagle Mountain 609 Comment
  CLARK-A1528-1525  Dichelostemma pulchellum John C. Roos, Lucille Roos 1954-5-9 6111 Inyo Panamint Range 1950 Comment
  CLARK-A1528-1686  Brickellia multiflora John C. Roos, Lucille Roos 1947-9-20 2813 Inyo Panamint Range 1249 Comment
  CLARK-A1528-1704  Chrysothamnus albidus John C. Roos, Lucille Roos 1954-11-23 6260 Inyo Saline Valley 380 Comment
  CLARK-A1528-1800  Dicoria canescens subsp. clarkiae John C. Roos, Lucille Roos 1954-6-28 6173 Inyo Eureka Valley 929 Comment
  CLARK-A1528-1931  Hecastocleis shockleyi John C. Roos, Philip A. Munz 1955-4-8 6308 Inyo Last Chance Mountains 1310 Comment
  CLARK-A1528-1940  Helianthus jaegeri John C. Roos 1950-8-7 4928 Inyo Tecopa 426 Comment
  CLARK-A1528-2340  Halimolobos diffusa var. jaegeri John C. Roos 1952-7-28 5844 Inyo White Mountains 2682 Comment
  CLARK-A1528-2379  Cleome sparsifolia John C. Roos, Lucille Roos 1954-6-28 6176 Inyo Eureka Valley 929 Comment
  CLARK-A1528-2439  Arenaria aculeata John C. Roos, Lucille Roos 1951-8-8 5118 Inyo White Mountains 2956 Comment
  CLARK-A1528-2459  Scopulophila rixfordii John C. Roos 1955-4-8 6313 Inyo Last Chance Range 1219 Comment
  CLARK-A1528-2566  Chenopodium leptophyllum John C. Roos 1954-6-26 6161 Inyo Inyo Mountains 2621 Comment
  CLARK-A1528-2575  Chenopodium rubrum John C. Roos 1954-8-15 6223 Inyo Saline Valley 323 Comment
  CLARK-A1528-2700  Euphorbia fendleri John C. Roos 1951-8-12 5193 Inyo White Mountains 2194 Comment
  CLARK-A1528-2747  Astragalus kentrophyta subsp. implexus John C. Roos 1937-8-5 1034 Inyo White Mountains Comment
  CLARK-A1528-2943  Centaurium exaltatum John C. Roos, Alfred R. Roos 1950-8-7 4927 Inyo Tecopa 426 Comment
  CLARK-A1528-3015  Phacelia perityloides John C. Roos 1955-4-6 6287 Inyo Inyo Mountains 609 Comment
  CLARK-A1528-3874  Ranunculus cymbalaria subsp. saximontanus John C. Roos, Lucille Roos 1954-6-24 6151 Inyo Inyo Mountains Comment
  CLARK-A1528-3984  Chamaebatiaria millefolium John C. Roos 1965-8-9 Inyo Independence Creek 2682 Comment
  CLARK-A1528-4918  Stanleya elata John C. Roos 1947-7-15 2822 Inyo Argus Mountains Comment
  CLARK-A1528-4970  Eriogonum deflexum John C. Roos 1947-7-15 2823 Inyo Darwin Mesa 1523 Comment
  CLARK-A1528-5511  Brickellia microphylla John C. Roos, Lucille Roos 1954-11-24 6265 Inyo Inyo Mountains 1676 Comment
  CLARK-A1528-5593  Tidestromia oblongifolia John C. Roos 1948-7-4 3909 Inyo Panamint Valley Comment
  CLARK-A1528-5604  Haplopappus macronema John C. Roos 1959-8-20 Inyo White Mountains 3047 Comment
  HSC78595  Eriogonum brachypodum J. C. Roos 1965-7-10 Inyo S slope trail to Telescope Peak, Panamint Mountains 2744 Comment
  LA102356  Poa nevadensis John C. Roos; Alfred R. Roos 1953-8-11 6000 Inyo Inyo Mountains, pass 3 mi. E of Blue Bell Mine on trail to Side Hill Spring 3078 Comment
  LA25949  Cymopterus cinerarius John C. Roos; Lucille Roos 1952-7-27 5831 Inyo WHITE MOUNTAINS, ridge at SE rim Reed Flat. 3169 Comment
  NY999424  Gayophytum decipiens J. C. Roos 1953-8-11 5999 Inyo 2½ miles east of Blue Bell Mine, Inyo Mountains 2987 Comment
  OBI30461  Delphinium glaucum J. C. Roos 1965-8-9 s.n. Inyo Onion Valley 2743 Comment
  POM251776  Ruppia cirrhosa J. C. Roos 1938-4-17 17 Inyo Springs above Furnace Creek, Death Valley. Comment
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Oct 30 2014
  POM261209  Oenothera cespitosa subsp. marginata J. C. Roos 1941-8-17 25 Inyo Panamint Mountains: 3049 Comment
  POM274225  Pyrrocoma sessiliflora J. C. Roos 1947-9-20 2815 Inyo South end Owen Lake at Olancha Comment
  RSA0002023  Stanleya pinnata var. inyoensis J. C. Roos, L. Roos 1954-6-28 6177 Inyo Southeast end Eureka Valley. 915 Comment
  RSA0002412  Nitrophila mohavensis J. C. Roos, A. Roos 1954-6-13 6140 Inyo Open flats of Amargosa Desert 3 mi. NE of Death Valley Junction along Ash Meadow road. 625 Comment
  RSA0046785  Philadelphus microphyllus var. stramineus J. C. Roos 1941-8-17 46 Inyo Baldy Peak, Panamint Mountains. 2744 Comment
  RSA0057817  Philadelphus microphyllus var. stramineus J. C. Roos, L. Roos 1952-7-28 5843 Inyo Wyman Canyon, White Mountains. 2683 Comment
  RSA0062965  Heuchera rubescens var. alpicola J. C. Roos 1947-7-14 2850 Inyo North slope Baldy Peak, Panamint Mts. 2652 Comment
  RSA0063293  Heuchera rubescens var. alpicola J. C. Roos, A. R. Roos 1953-8-13 6021 Inyo East tributary of Mazourka Canyon, Inyo Mountains. 2500 Comment
  RSA0066408  Phlox caespitosa J. C. Roos, A. R. Roos 1953-8-13 6011 Inyo Along crest of Inyo Mts. east of headwaters of Tamarack Canyon. 3140 Comment
  RSA0094651  Gilia J. C. Roos 1955-6-17 6394 Inyo 2 miles north of Willow Spring, Last Chance Mountains. 2011 Comment
  RSA0110967  Arabis microphylla J. C. Roos, A. R. Roos 1953-8-9 5962 Inyo Inyo Mountains near head of Tamarack Canyon. 3078 Comment
  RSA0124789  Eriastrum wilcoxii J. C. Roos, L. Roos 1954-6-25 6152 Inyo Inyo Mountains: East side Badger Flat. 2652 Comment
  RSA105015  Astragalus coccineus J. C. Roos 1955-5-16 6392 Inyo Waucoba road, 6 miles east of Big Pine, west side Inyo Mtns. 1494 Comment
  RSA10594  Gayophytum decipiens J. C. Roos 1947-7-14 2851 Inyo north slope Baldy Peak, Panamint Mts. 2622 Comment
  RSA155714  Cordylanthus kingii subsp. helleri J. C. Roos, A. R. Roos 1955-8-24 6536 Inyo Last Chance Mts. 1 mile south of Willoq Spring. Comment
  RSA155722  Astragalus calycosus J. C. Roos 1955-6-19 6444 Inyo Summit ridge Last Chance Mtns., 2 miles W of Last Chance Spring. 2530 Comment
  RSA155756  Cuscuta indecora J. C. Roos, A. R. Roos 1955-8-28 6563 Inyo On the West side of Owens Lake, 3 miles North of Olancha 1091 Comment
  RSA40572  Astragalus purshii var. tinctus J. C. Roos 1947-4-20 s.n Inyo Wildrose Canyon, Panamint Mountains. 1585 Comment
  RSA450248  Galium stellatum J. C. Roos, L. Roos 1955-4-6 6293 Inyo Near the mouth of Craig Canyon, on the east base of the Inyo Mtns, Saline Valley, 503 Comment
  RSA658436  Eriogonum brachypodum J. C. Roos 1965-7-10 s.n. Inyo South slope trail to Telescope Peak. Panamint Mtns. 2744 Comment
  RSA664188  Chenopodium rubrum J. C. Roos 1965-9-18 s.n. Inyo Inyo Mountains; Darwin Mesa. Comment
  RSA71705  Eriogonum ovalifolium var. ovalifolium J. C. Roos 1952-7-31 5877 Inyo 1 mile south of Reed Flat, White Mountains. 2835 Comment
  RSA71734  Cryptantha virginensis J. C. Roos, L. Roos 1952-7-28 5849 Inyo White Mountains:Wyman Canyon 2744 Comment
  RSA71777  Penstemon floridus J. C. Roos, L. Roos 1951-8-7 5083 Inyo West side Westgard Pass, near Batchelder Spring; White Mts. 1829 Comment
  RSA71779  Penstemon speciosus J. C. Roos, L. Roos 1951-8-7 5085 Inyo 3 mi. NW of Cedar Flat, White Mts. 2591 Comment
  RSA85154  Mohavea breviflora J. C. Roos, Lucille Roos 1954-3-27 6049 Inyo Mud Canyon, Death Valley. 244 Comment
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Aug 26 2014
  RSA90550  Chrysothamnus albidus J. C. Roos, L. Roos 1954-11-23 6260 Inyo 1.4 miles south of Lower Warm Spring, Saline Valley; 381 Comment
  RSA92061  Pleuraphis jamesii J. C. Roos 1954-5-8 6095 Inyo Grapevine Mountains above Leadfield 1584 Comment
  RSA92068  Triglochin maritima J. C. Roos, L. Roos 1954-5-7 6078 Inyo Amargosa Desert 3 miles NE of Death Valley Junction, along Ash Meadows road. 625 Comment
  RSA92467  Aliciella ripleyi J. C. Roos, L. Roos 1954-5-8 6105 Inyo Titus Canyon, Grapevine Mountains 1280 Comment
  RSA92753  Artemisia nova J. C. Roos, A. R. Roos 1954-8-14 6210 Inyo 1 1/2 miles east of Andrews Mountain, Inyo Mountains 2561 Comment
  RSA92756  Chrysothamnus viscidiflorus var. puberulus J. C. Roos 1954-8-14 6218 Inyo 2.5 mi. NE of Andrews Mtn. 2378 Comment
  SD52873  Castilleja exilis John C. Roos, A. R. Roos 1955-8-28 6568 Inyo west side Owens Lake 3 miles north of Olancha 1091 Comment
  SD52917  Sesuvium verrucosum J. C. Roos 1955-7-24 6524 Inyo 0.5 miles east of Olancha at south end Owens Lake 1095 Comment
  SD52952  Muhlenbergia porteri John C. Roos, A. R. Roos 1955-8-25 6546 Inyo Loretto road, 1 mile west of Loretto Mine, east slope Inyo Mts. 1584 Comment
  SEINET10693594 Image available Lomatium inyoense John C. Roos, Lucile Roos 1954-6-24 Roos 6149 Inyo Common on open rocky dry slopes and around pines with Astragalus calycosus, Pinus aristata, Artemisia nova, etc. Crest of Inyo Mts. 3 miles east of Badger Flat in headwaters of Marble Canyon watershed. 3170 Comment
  SEINET12325161  Sambucus caerulea J. C. Roos 1965-1 s.n. Inyo Upper Wildrose Canyon, Panamint Mountains Comment
  SEINET13944432 Image available Lomatium foeniculaceum J. C. Roos 1958-1 sn Inyo Near Badger Flat, Inyo mtns. Comment
  SEINET7881993 Image available Haplopappus brickellioides J. C. Roos, A. R. Roos 1955-1 6530 Inyo West Base Last Chance Mts. east of Eureka Valley sand dunes Comment
  UC1042985  Oxytheca dendroidea subsp. dendroidea John and Lucille Roos 1954-6-27 6166 Inyo flats 1.5 mi e Andrews Mtn.; Inyo Mts. 2545 Comment
  UC1043009  Chenopodium rubrum John and Lucille Roos 1954-11-23 6258 Inyo Salt Lake Saline Valley (marsh at sw side) 323 Comment
  UC1234666  Lotus oblongifolius var. oblongifolius J. C. and A. R. Roos 1955-8-28 6566 Inyo 3 mi n Olancha (w side Owens Lake); Owens Lake 1091 Comment
  UC1234814  Cordylanthus kingii subsp. helleri J. C. Roos 1955-7-20 6475 Inyo 2 mi e Willow Springs (at boundary marker #80); Last Chance Mts. 2133 Comment
  UC1234821  Eriogonum baileyi var. baileyi J. C. Roos and E. C. Jaeger 1955-7-21 6496 Inyo Willow Spring Last Chance Mountains, Willow Spring 1828 Comment
  UC1234839  Eriogonum nummulare J. C. and A. R. Roos 1955-8-25 6545 Inyo e Willow Spring (0.1 mi nw of boundary marker #80); Last Chance Mts. 2072 Comment
  UC1236261  Astragalus coccineus John C. Roos 1955-5-16 6392 Inyo Waucoba Road 6 mi e Big Pine (w side Inyo Mts., n side rock outcrop); w side Inyo Mts., e of Big Pine 1493 Comment
  UC1236262  Stanleya pinnata John C. Roos 1955-5-16 6391 Inyo Waucoba Road 6 mi e Big Pine; w side Inyo Mts., e of Big Pine 1493 Comment
  UCSB37793  Physocarpus alternans Roos, John 1965-7-10 Inyo Eagle Springs, Panamint Mtns Comment
  UCSB45548  Eriogonum brachypodum Roos, John 1965-7-10 Inyo South slope trail to Telescope Peak, Panamint Mtns 2743 Comment
  UCSB45962  Poa bigelovii Roos, John 1955-4-6 Inyo Beveridge Canyon, on the east base of the Inyo Mtns. 670 Comment
  CLARK-A1528-1962  Hymenoclea salsola Alfred R. Roos 1937-3-26 Kern Maricopa Comment
  CLARK-A1528-2454  Herniaria cinerea John C. Roos 1957-7-9 6653 Kern Keene Comment
  CLARK-A1528-3473  Linanthus dichotomus John C. Roos 1937-3-25 1322 Kern Comment
  POM263283  Lupinus densiflorus var. palustris J. C. Roos 1937-3-26 689 Kern East of Maricopa. Comment
  RSA155691  Senna armata J. C. Roos 1955-6-21 6471 Kern 4 miles NW of Searles Station, Mojave Desert. 1067 Comment
  RSA309657  Schedonorus arundinaceus J. C. Roos 1950-7-24 4822 Kern Shafter, along edge of building 122 Comment
  UCR23947  Lupinus formosus John C. Roos 1937-8-10 2522 Kern 12 mi N of Caliente 1903 Comment
  UCR24089  Endolepis covillei John C. Roos 1969-5-10 s.n. Kern Western Mojave Desert, Red Rock Canyon 793 Comment
  UCR24846  Castilleja exserta John C. Roos 1937-5-26 444 Kern east of Maricopa Comment
  UCR25940  Atriplex rosea John C. Roos 1949-11-27 4702 Kern Tehachapi Mtns., Monolith Dry Lake [= Proctor Lake] 1204 Comment
  POM265633  Eriogonum nudum var. pubiflorum J. C. Roos 1937-8-10 1044 Kern Bodfish. Comment
  RSA0016964  Lupinus albicaulis subsp. wolfianus J. C. Roos 1937-8-10 2522 Kern Valley 12 miles north of Caliente. Comment
  RSA49470  Atriplex J. C. Roos 1937-8-11 2150 Kern Monolith Lake, south side of Tehachapi Mts. Comment
  POM262793  Ptelea baldwinii subsp. crenulata J. C. Roos 1939-4-22 287 Lake W shore of Clear Lake. Comment
  UCR26211  Cephalanthus occidentalis John C. Roos 1948-8-31 3930 Lake Edge of Clear Lake. Lucerne 408 Comment
  CLARK-A1528-1207  Lycium cooperi John C. Roos 1937-5-31 690 Los Angeles Comment
  CLARK-A1528-1256  Chloris gayana John C. Roos, Alfred R. Roos 1950-9-16 4987 Los Angeles Los Angeles 60 Comment
  CLARK-A1528-1540  Ambrosia psilostachya John C. Roos 1947-7-21 Los Angeles Lancaster Comment
  CLARK-A1528-1785  Corethrogyne filaginifolia John C. Roos 1942-9-12 1719 Los Angeles Westwood Comment
  CLARK-A1528-1893  Haplopappus venetus John C. Roos 1942-9-12 1720 Los Angeles Comment
  CLARK-A1528-2136  Verbesina encelioides subsp. exauriculata John C. Roos 1937-6-29 2485 Los Angeles Oxnard Comment
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Dec 5 2014
  CLARK-A1528-2301  Cardamine oligosperma Alfred R. Roos 1958-6-3 Los Angeles Brentwood Comment
  CLARK-A1528-2356  Tropidocarpum gracile John C. Roos 1937-3-25 1335 Los Angeles Comment
  CLARK-A1528-2532  Allenrolfea occidentalis John C. Roos 1947-7-21 Los Angeles Lancaster Comment
  CLARK-A1528-2763  Astragalus trichopodus subsp. antisellii John C. Roos 1937-7-29 1245 Los Angeles Santa Monica Mountains Comment
  CLARK-A1528-2842  Lupinus horizontalis var. platypetalus John C. Roos 1941-4-12 181 Los Angeles Palmdale Comment
  CLARK-A1528-3288  Forestiera neomexicana John C. Roos 1937-8-11 22 Los Angeles Lancaster Comment
  CLARK-A1528-3608  Chorizanthe staticoides John C. Roos 1937-7-19 1803 Los Angeles Comment
  CLARK-A1528-3622  Eriogonum cinereum John C. Roos 1942-9-26 1727 Los Angeles Santa Monica Comment
  CLARK-A1528-3665  Eriogonum cinereum John C. Roos 1942-9-26 1727 Los Angeles Santa Monica Comment
  CLARK-A1528-3998  Horkelia cuneata John C. Roos 1937-7-7 1931 Los Angeles San Gabriel Mountains Comment
  CLARK-A1528-4060  Salix scouleriana John C. Roos 1937-7-16 620 Los Angeles San Gabriel Mountains Comment
  CLARK-A1528-4120  Ribes californicum var. hesperium John C. Roos 1966-2-4 Los Angeles Claremont Comment
  CLARK-A1528-4157  Ribes viburnifolium John C. Roos 1966-2-26 Los Angeles Claremont Comment
  CLARK-A1528-4379  Solanum xanti var. intermedium John C. Roos 1937-6-29 1485 Los Angeles Malibu Beach Comment
  CLARK-A1528-4403  Verbena lasiostachys John C. Roos 1937-3-25 1332 Los Angeles Comment
  CLARK-A1528-4586  Digitaria ischaemum John C. Roos 1949-10-19 4692 Los Angeles San Gabriel 121 Comment
  CLARK-A1528-4726  Melica imperfecta John C. Roos 1937-3-25 442 Los Angeles Lancaster Comment
  CLARK-A1528-4794  Phalaris canariensis Alfred R. Roos 1958-5-21 Los Angeles Brentwood Comment
  CLARK-A1528-4913  Astragalus bicristatus John C. Roos 1937-5-31 491 Los Angeles San Gabriel Mountains Comment
  CLARK-A1528-4924  Astragalus douglasii var. douglasii John C. Roos 1937-5-31 2045 Los Angeles San Gabriel Mountains Comment
  CLARK-A1528-4929  Medicago lupulina John C. Roos 1937-5-31 2033 Los Angeles San Gabriel Mountains Comment
  CLARK-A1528-4981  Lupinus longifolius John C. Roos 1937-6-29 1707 Los Angeles Santa Monica Mountains Comment
  CLARK-A1528-5109  Phacelia viscida John C. Roos 1937-7-7 404 Los Angeles La Crescenta 478 Comment
  CLARK-A1528-5171  Lithophragma heterophyllum John C. Roos 1942-4-18 1082 Los Angeles San Gabriel Mountains Comment
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Aug 22 2016
  CLARK-A1528-5247  Trifolium wormskioldii John C. Roos 1937-5-31 756 Los Angeles San Gabriel Mountains Comment
  CLARK-A1528-5599  Polystichum munitum John C. Roos 1937-7-3 Los Angeles La Canada Comment
  CLARK-A1528-7813  Physalis neomexicana John C. Roos 1942-8-26 1749 Los Angeles San Gabriel Comment
  CLARK-A1528-7861  Barbarea orthoceras John C. Roos 1947-5-31 3664 Los Angeles San Gabriel Mountains Comment
  CLARK-A1528-7870  Convolvulus althaeoides John C. Roos 1950-5-9 4793 Los Angeles Los Angeles 91 Comment
  POM263063  Malacothamnus davidsonii J. C. Roos 1937-7-7 331 Los Angeles Near San Fernando Comment
  POM263114  Achnatherum occidentale subsp. occidentale J. C. Roos 1937-7-18 398 Los Angeles Mt. Wilson observatory grounds 2651 Comment
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Nov 13 2011
  POM263247  Eriogonum davidsonii J. C. Roos 1937-7-18 403 Los Angeles San Antonio Canyon, between Los Angeles and San Bernardino counties. Comment
  POM263552  Allium monticola J. C. Roos 1937-7-16 636 Los Angeles Los Angeles - San bernardino counties. Mt. San Antonio 2744 Comment
  POM265665  Lithophragma heterophyllum J. C. Roos 1942-4-18 1083 Los Angeles Santa Anita Canyon, San Gabriel Mts Comment
  POM265683  Dudleya cymosa subsp. pumila J. C. Roos 1942-5-23 1062 Los Angeles near Chantry Flats, Santa Anita Canyon. Comment
  POM266283  Ericameria parishii var. parishii J. C. Roos 1937-10-30 2261 Los Angeles Lytle Creek, east end of San Gabriel Mts. Comment
  POM266898  Eleusine indica J. C. Roos 1942-10-1 1735 Los Angeles Los Angeles. Comment
  POM301691  Paspalum dilatatum J. C. Roos 1942-10-1 1736 Los Angeles North Boyle and Brooklyn Ave. Comment
  RSA450229  Ribes malvaceum var. viridifolium J. C. Roos 1966-2-11 s.n. Los Angeles Claremont. Comment
  RSA658345  Ribes malvaceum var. viridifolium J. C. Roos 1966-2-11 s.n. Los Angeles Claremont. Comment
  RSA89978  Digitaria ciliaris J. C. Roos, A. R. Roos 1950-9-16 4989 Los Angeles Los Angeles. 61 Comment
  UC1010238  Lepidospartum latisquamum John C. Roos 1951-7-30 5073 Los Angeles Swartout Valley between Wrightwood and Big Pines; San Gabriel Mts., Swartout Valley between Wrightwood and Big 1981 Comment
  UCR18945  Quercus lobata John C. Roos 1946-11-23 3157 Los Angeles Transverse Range, Placerita Canyon [in Santa Clarita] Comment
  UCR19000  Trifolium gracilentum John C. Roos 1950-4-1 4720 Los Angeles Los Angeles Basin Region, Los Angeles [West Los Angeles/ Westwood], hill just east of [Ralph Waldo] Emerson Junior High School [1650 Selby Ave.] 87 Comment
  UCR19660  Paspalum dilatatum John C. Roos 1947-5-11 3605 Los Angeles Los Angeles; lawn in Hollenbeck Park 91 Comment
  UCR21045  Eragrostis pectinacea var. pectinacea John C. Roos 1940-9-6 s.n. Los Angeles Westwood Village, Los Angeles 90 Comment
  UCR23573  Sarcodes sanguinea John C. Roos 1966-6-15 s.n. Los Angeles San Gabriel Mountains, North slope of Mt. Baden-Powell near Lamel Spring 2378 Comment
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Aug 18 2012
  UCR23642  Arbutus menziesii John C. Roos 1942-3-21 1095 Los Angeles San Gabriel Mtns, Santa Anita Canyon 244 Comment
  UCR23738  Chaenactis santolinoides John C. Roos 1947-5-31 3667 Los Angeles San Gabriel Mountains, Big Pines 2134 Comment
  UCR23819  Hedypnois cretica Alfred R. Roos 1954-5-17 s.n. Los Angeles Hollywood, near North Kenmore & Oakdale [=Oakwood?] Streets 91 Comment
  UCR23851  Medicago lupulina John C. Roos 1954-5-31 s.n. Los Angeles Hollywood parking lot, Los Angeles Comment
  UCR24118  Atriplex lentiformis subsp. breweri John C. Roos 1942-9-12 1724 Los Angeles South Coast/Santa Monica Mtns., northwest of Santa Monica 30 Comment
  UCR24490  Penstemon heterophyllus John C. Roos 1942-6-6 984 Los Angeles Western Transverse Range, Placerita Canyon near Newhall 610 Comment
  UCR26144  Geranium robertianum Alfred R. Roos 1958-6-3 s.n. Los Angeles Evans and Reeves Nursery, Brentwood, West Los Angeles Comment
  UCR26244  Frasera neglecta John C. Roos 1937-5-31 2037 Los Angeles San Gabriel Mtns., Big Pines 2195 Comment
  UCR27496  Linanthus breviculus John C. Roos 1947-5-3 3654 Los Angeles San Gabriel Mtns, Big Pines 1890 Comment
  UCSB42183  Sarcodes sanguinea Roos, John 1966-6-15 Los Angeles N slope of Mount Baden-Powell near Laurel Spring, San Gabriel Mtns. 2377 Comment
  CLARK-A1528-2783  Hoffmannseggia densiflora John C. Roos 1947-5-11 3607 Los Angeles Monterey Park Comment
  CLARK-A1528-2996  Phacelia cicutaria John C. Roos 1947-5-17 3627 Los Angeles Placerita Canyon Comment
  POM262932  Eriogonum saxatile J. C. Roos 1937-7-17 391 Los Angeles San Gabriel Mountains: trail to Telegraph Peak 2591 Comment
  POM265685  Melilotus albus J. C. Roos 1942-9-26 1729 Los Angeles Westwood Village, Los Angeles. Comment
  POM266299  Ambrosia psilostachya J. C. Roos 1942-9-28 1716 Los Angeles Beverly Blvd. Los Angeles Comment
  POM266382  Agoseris heterophylla var. heterophylla J. C. Roos 1937-3-17 2458 Los Angeles San Fernando Valley. Comment
  POM301607  Nemacladus sigmoideus J. C. Roos 1796 Los Angeles Mojave Desert, north of Adelanto. Comment
  RSA309653  Hedypnois cretica A. R. Roos 1954-5-17 s.n. Los Angeles Hollywood, near North Kenmore & Oakdale Streets. 91 Comment
  RSA659192  Geranium robertianum A. R. Roos 1958-6-3 s.n. Los Angeles Evans-Reeves Nursery, Brentwood, West Los Angeles. Comment
  RSA85108  Medicago lupulina J. C. Roos 1952-4-30 5604 Los Angeles Edge of lawn, March Air Force Base 488 Comment
  POM301698  Phalaris lemmonii J. C. Roos 1940-6-11 1913 Marin junction of Highway 37 and 10, north of San Rafael Comment
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Jun 10 2015
  CLARK-A1528-4137  Ribes montigenum John C. Roos 1942-7-1 1251 Mariposa Yosemite Comment
  POM266338  Poa secunda J. C. Roos 1942-7-1 1270 Mariposa Between Clouds Rest and Half Dome, Yosemite National Park. 2287 Comment
  POM266489  Melica stricta J. C. Roos 1942-7-1 1256 Mariposa Rocky gorge north of Nevada Falls, Yosemite National Park. Comment
  RSA78233  Lupinus vallicola subsp. vallicola J. C. Roos, Lucille Roos, A. R. Roos 1951-5-27 5052 Mariposa About 8 miles east of Marposa. 1006 Comment
  UCR20336  Calochortus venustus John C. Roos, L. Roos 1951-5-27 5048 Mariposa Sierra Nevada Mtns., hills about 8 miles east of Mariposa 1006 Comment
  UCR23412  Apocynum cannabinum John C. Roos 1958-6-20 s.n. Mariposa Sierra Nevada Mtns., Mariposa Grove near Yosemite Park [location may be in error] Comment
  UCR23578  Cynoglossum occidentale John C. Roos 1942-7-1 1253 Mariposa Sierra Nevada Mtns, Yosemite National Park, south slope of Cloud's Rest 2591 Comment
  UCR23891  Danthonia unispicata John C. Roos 1942-6-29 1258 Mariposa Sierra Nevada Mtns., Yosemite National Park, north of North Dome 2439 Comment
  UCR24033  Melica aristata John C. Roos 1942-7-1 1255 Mariposa Sierra Nevada Mtns., Yosemite National Park, between Cloud's Rest and Half Dome 2287 Comment
  UCR24034  Melica bulbosa John C. Roos 1942-6-26 1257 Mariposa 4 Mile Trail north of Yosemite Valley 2145 Comment
  UCR24040  Poa nervosa John C. Roos 1942-6-25 1267 Mariposa Sierra Nevada Mtns., Yosemite National Park, top of Half Dome 2683 Comment
  UCR25160  Geranium carolinianum John C. Roos, Lucille Roos 1951-5-26 5045 Mariposa Sierra Nevada Mtns, hills about 7 miles east of Mariposa 1037 Comment
  UCR25187  Mimulus torreyi John C. Roos, L. Roos 1951-5-26 5041 Mariposa Sierra Nevada Mtns, hills about 7 miles east of Mariposa 1037 Comment
  UCR25189  Sidalcea hirsuta John C. Roos, Lucille Roos 1951-5-26 5044 Mariposa Sierra Nevada Mtns, hills about 7 miles east of Mariposa 1037 Comment
  UCSB45542  Castilleja lineariloba Roos, John 1951-5-26 Mariposa about 7 miles east of Mariposa 1036 Comment
  CLARK-A1528-2442  Arenaria douglasii John C. Roos, Lucille Roos 1951-5-27 5054 Mariposa Comment
  POM301678  Pinus monticola J. C. Roos 1942-6-25 1261 Mariposa Just north of Half Dome, Yosemite National Park. 2378 Comment
  UCSB45541  Aira caryophyllea Roos, John 1951-5-26 Mariposa Hills ca. 7 mi E of Mariposa 1036 Comment
  CLARK-A1528-1937  Helenium bolanderi John C. Roos 1957-7-2 6640 Mendocino Point Arena Comment
  CLARK-A1528-3045  Arctostaphylos nummularia John C. Roos 1957-7-1 6622 Mendocino Little River Comment
  CLARK-A1528-4459  Anthoxanthum odoratum John C. Roos 1957-7-1 6628 Mendocino Albion 9 Comment
  UCR23592  Myrica californica John C. Roos 1957-7-1 6623 Mendocino Little River Comment
  UCR23970  Briza maxima John C. Roos 1957-7-2 6636 Mendocino Point Arena Lighthouse, on the coast 15 Comment
  CLARK-A1528-5133  Drosera rotundifolia John C. Roos 1957-7-1 6624 Mendocino Little River Comment
  CAS-BOT-BC315853  Hulsea algida John Roos; Lucille Roos 1951-8-10 5156 Mono 1 mile SE of White Mtn. Peak, White Mts. 4023 Comment
  CAS-BOT-BC332948  Senecio spartioides John Roos; Lucille Roos 1951-8-8 5102 Mono Big Prospector Meadow at head of Crooked Creek, Whtie Mountains 3169 Comment
  CAS-BOT-BC425020  Heuchera parvifolia John Roos; Lucille Roos 1952-7-30 5874 Mono Crooked Creek, White Mts. 3078 Comment
  CLARK-A1528-1489  Cystopteris fragilis John C. Roos, Lucille Roos 1951-8-11 5177 Mono White Mountains 3474 Comment
  CLARK-A1528-1562  Artemisia cana John C. Roos, Lucille Roos 1952-7-30 5865 Mono White Mountains 2895 Comment
  CLARK-A1528-2948  Gentiana amarella John C. Roos, Lucille Roos 1952-7-30 5864 Mono White Mountains 2834 Comment
  CLARK-A1528-3658  Eriogonum incanum John C. Roos 1937-8-5 1660 Mono White Mountains 2743-3048 Comment
  CLARK-A1528-3801  Rumex paucifolius John C. Roos, Lucille Roos 1951-8-10 5132 Mono White Mountains 3657 Comment
  CLARK-A1528-4080  Selaginella watsonii John C. Roos, Lucille Roos 1951-8-10 5147 Mono White Mountain 4297 Comment
  CLARK-A1528-4275  Mimulus rubellus John C. Roos, Lucille Roos 1951-8-11 5173 Mono White Mountains 3322 Comment
  CLARK-A1528-5333  Androsace septentrionalis subsp. subumbellata John C. Roos, Lucille Roos 1951-8-10 5137 Mono White Mountains 3657 Comment
  NY833090  Potentilla morefieldii J. C. Roos 1951-8-10 5140 Mono Saddle 1 mile southeast of White Mountain Peak, White Mountains 3962 Comment
  NY833502  Potentilla pensylvanica J. C. Roos 1951-8-10 5159 Mono 1 mile north of Sheep Mountain , White Mountains 3627 Comment
  RSA45492  Eriogonum spergulinum var. reddingianum J. C. Roos, L. Roos 1948-9-7 3989 Mono Crestview. Comment
  RSA71379  Draba oligosperma J. C. Roos, L. Roos 1951-8-10 5151 Mono 1 mile SE of White Mtn Peak, White Mtns. 4024 Comment
  RSA71387  Potentilla pensylvanica J. C. Roos, L. Roos 1951-8-10 5159 Mono 1 mile north of Sheep Mountain. 3628 Comment
  RSA71395  Eriogonum cernuum var. cernuum J. C. Roos, L. Roos 1951-8-11 5167 Mono White Mountains: NW side Big Prospector Meadow 3262 Comment
  RSA71679  Achnatherum pinetorum J. C. Roos 1951-8-10 5130 Mono 1.5 miles N of Piute Mts, White Mts. 3567 Comment
  SEINET13680183  Agropyron desertorum J. C. Roos 1960-7-4 Mono Crooked Creek, White Mtns. 3099 Comment
  UC1010178  Erigeron clokeyi var. pinzliae John and Lucille Roos 1951-8-8 5100 Mono Big Prospector Meadow White Mts., Big Prospector Meadow 3200 Comment
  UC1010191  Draba oligosperma var. oligosperma John and Lucille Roos 1951-8-10 5151 Mono 1 mi se White Mtn Peak; White Mts., se of White Mtn Peak 4023 Comment
  UC1010192  Potentilla pensylvanica John and Lucille Roos 1951-8-10 5159 Mono 1 mi n Sheep Mtn.; White Mts., n of Sheep Mtn. 3627 Comment
  UC1010198  Pyrrocoma apargioides John and Lucille Roos 1951-8-11 5169 Mono Campito Meadow White Mts. 3322 Comment
  UC1010209  Cystopteris fragilis John and Lucille Roos 1952-7-30 5871 Mono Crooked Creek; White Mts 3048 Comment
  UCR18852  Gentiana amarella John C. Roos, L. Roos 1952-7-30 5864 Mono White Mountains, along Crooked Creek 2835 Comment
  UCR19119  Smilacina stellata John C. Roos 1960-7-4 s.n. Mono White Mtns, Crooked Creek 3293 Comment
  UCR27548  Stellaria longipes var. longipes John C. Roos 1960-7-4 s.n. Mono White Mtns, Crooked Creek 3293 Comment
  UCSB45596  Agropyron desertorum John C. Roos 1960-7-4 Mono collected in Crooked Creek in the White Mountains Crooked Creek Comment
  CAS-BOT-BC271308  Koeleria pyramidata John Roos; Lucille Roos 1951-8-10 5157 Mono Slopes 1 mile SE of White Mtn. Peak, White Mountains 3962 Comment
  CLARK-A1528-1050  Lemmonia californica John C. Roos 1951-8-8 5106 Mono White Mountains 3200 Comment
  RSA0063047  Heuchera parvifolia J. C. Roos, L. Roos 1952-7-30 5874 Mono Crooked Creek. White Mtns. 3079 Comment
  RSA71405  Astragalus calycosus J. C. Roos, Lucille Roos, A. R. Roos 1951-8-11 5178 Mono East slope of Sheep Mountain, White Mountains 3476 Comment
  RSA71755  Senecio multilobatus J. C. Roos, Lucille Roos 1951-8-8 5101 Mono Big Prospector Meadow, White Mountains. 3201 Comment
  CLARK-A1528-2913  Quercus wislizeni John C. Roos 1939-4-16 284 Napa Angwin Comment
  POM262789  Trifolium fucatum var. fucatum J. C. Roos 1939-4-15 279 Napa Pope Valley Comment
  POM262889  Prunus subcordata J. C. Roos 1939-3-31 307 Napa Angwin. Howell Mtns. Comment
  POM263156  Calochortus amabilis J. C. Roos 1939-4-18 278 Napa Howell Mountain, Angwin. Comment
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Feb 15 2006
  POM263164  Ranunculus muricatus J. C. Roos 1939-4-18 314 Napa Howell Mountain, Angwin. Comment
  POM264935  Hesperolinon clevelandii J. C. Roos 1939-5-13 266 Napa Angwin, Howell Mt. Comment
  RSA444489  Quercus chrysolepis J. C. Roos 1939-5-14 255 Napa Pacific Union College, Anguin. Comment
  RSA591760  Athysanus pusillus J. C. Roos 1939-4-18 277 Napa Snell Valley, Pacific Union College, Angwin. Comment
  UCR23605  Athysanus pusillus John C. Roos 1939-4-18 277 Napa North Coast Range, Pacific Union College; Angwin 549 Comment
  UCR24144  Fritillaria recurva var. coccinea John C. Roos 1939-3-3 301 Napa North Coast Range, Snell Valley, Angwin, Pacific Union College 549 Comment
  UCR24352  Trisetum canescens John C. Roos 1939-5-7 297 Napa North Coast Range, Pacific Union College, Angwin 549 Comment
  UCR24390  Saxifraga californica John C. Roos 1939-3-27 304 Napa North Coast Range, Snell Valley, Pacific Union College, Angwin 549 Comment
  UCR25317  Lepidium nitidum John C. Roos 1939-3-18 s.n. Napa North Coast Range, Snell Valley, [near] Pacific Union College, Angwin 183 Comment
  UCR25326  Trientalis latifolia John C. Roos 1939-4-29 290 Napa North Coast Range, Pacific Union College, Angwin 549 Comment
  UCR25608  Elymus glaucus John C. Roos 1939-5-13 256 Napa North Coast Range, Pacific Union College, Angwin 503 Comment
  UCR30481  Ribes divaricatum John C. Roos 1939-4-1 312 Napa W of Calistoga Comment
  UCR30536  Torreyochloa pallida var. pauciflora John C. Roos 1939-5-13 271 Napa North Coast Range, Pacific Union College, Angwin 503 Comment
  UCSB46883  Hesperocyparis macnabiana Roos, John 1938-11-19 Napa Pope Valley, Aetha Springs, along creek Comment
  CLARK-A1528-2918  Quercus douglasii John C. Roos 1939-3-27 280 Napa Angwin Comment
  CAS-BOT-BC435232  Mesembryanthemum crystallinum J. C. Roos 1965-6-16 s.n. Orange Dana Point. Comment
  CLARK-A1528-1072  Haplopappus venetus subsp. vernonioides John C. Roos 1936-10-13 1531 Orange Newport Beach Comment
  CLARK-A1528-1186  Atriplex leucophylla John C. Roos 1949-10-1 4677 Orange Doheney Beach Comment
  CLARK-A1528-1790  Corethrogyne filaginifolia var. virgata John C. Roos 1937-9-1 2519 Orange Laguna Beach Comment
  CLARK-A1528-1906  Haplopappus venetus John C. Roos 1949-10-1 4683 Orange Doheney Beach Comment
  CLARK-A1528-2529  Atriplex leucophylla John C. Roos 1937-2-23 1307 Orange Laguna Beach Comment
  CLARK-A1528-3766  Oxytheca trilobata John C. Roos 1960-6-11 Orange Santa Ana Mountains 975 Comment
  CLARK-A1528-5031  Spartina foliosa John C. Roos 1937-9-1 427 Orange Seal Beach Comment
  CLARK-A1528-5622  Madia sativa John C. Roos 1960-5-30 Orange Santa Ana Mountains Comment
  POM265679  Dudleya lanceolata J. C. Roos 1937-5-21 2338 Orange Lemon Heights, near Santa Ana Comment
  RSA48859  Ludwigia peploides subsp. peploides J. C. Roos 1949-10-1 4685 Orange Doheney Beach. [Now Capistrano Beach] Comment
  UCD96994  Mesembryanthemum crystallinum J. C. Roos 1965-6-16 s.n. Orange Dana Point. Comment
  UCD97413  Amaranthus hypochondriacus A. R. Roos 1937-12-2 s.n. Orange Santa Ana. Comment
  UCR19078  Mimulus aurantiacus var. puniceus John C. Roos 1965-6-16 s.n. Orange Dana Point Comment
  UCR19247  Phyllospadix torreyi John C. Roos 1960-8-27 s.n. Orange Dana Point Comment
  UCR24218  Plantago indica John C. Roos 1957-7-29 6657 Orange Southern Coast, Newport Beach Comment
  UCSB38063  Chorizanthe fimbriata var. fimbriata Roos, John 1965-6-16 Orange Dana Point near Doheney Beach. Comment
  UCSB42219  Acmispon americanus Roos, John 1965-6-16 Orange Dana Point near Doheney Beach Comment
  POM266619  Gastridium phleoides J. C. Roos 1937-5-21 2284 Orange Lemon Heights Comment
  POM301692  Paspalum dilatatum J. C. Roos 1942-6-20 990 Orange Anaheim, Telegraph Road, east of Los Angeles Comment
  RSA48861  Chenopodium macrospermum var. farinosum J. C. Roos 1949-10-1 4681 Orange Doheney Beach. [Now Capistrano Beach] Comment
  CAS-BOT-BC106191  Brickellia desertorum John Roos; Lucille Roos 1950-9-9 4986 Riverside Mt. Rubidoux, Riverside 396 Comment
  CAS-BOT-BC139874  Adenostoma sparsifolium J. C. Roos 1965-8-18 s.n. Riverside Thomas Valley, summit Palms to Pines Hwy., San Jacinto Mtns. Comment
  CAS-BOT-BC145639  Bouteloua curtipendula var. caespitosa John C. Roos 1946-8-27 2786 Riverside Near Pinon Flats, Santa Rosa Mountains. 1371 Comment
  CAS-BOT-BC167853  Malosma laurina John Roos; Lucille Roos 1954-7-10 6191 Riverside North side Pigeon Pass, Box Springs Mts. 487 Comment
  CAS-BOT-BC178386  Garrya flavescens J. C. Roos 1966-4-23 s.n. Riverside Skyline Drive, Santa Ana Mtns., above Corona Comment
  CAS-BOT-BC199285  Calystegia sepium subsp. limnophila J. C. Roos; A. R. Roos 1950-8-7 4919 Riverside Riverbottom along Spring Brook between Lake Evans (Fairmont Park) and the Santa Ana River at the Mission Bridge, along bike path, vicinity of old Boy Scout camp 238 Comment
  CAS-BOT-BC30793  Ambrosia ilicifolia J. C. Roos 1958-3-15 s.n. Riverside 2 1/2 miles S.E. of Desert Center, in the Chuckwalla Mtns. Comment
  CAS-BOT-BC312304  Heterotheca villosa var. nana John Roos; Lucille Roos 1950-10-21 5011 Riverside Wonderland of Rocks, Little San Bernardinno Mts. 1219 Comment
  CAS-BOT-BC365818  Soliva sessilis John Roos; Lucille Roos 1953-5-9 5916 Riverside Fairmount Park, Riverside 259 Comment
  CAS-BOT-BC72839  Pinus quadrifolia J. C. Roos 1965-8-18 s.n. Riverside Summit of Pines to Palm Hwy., Thomas Valley, San Jacinto Mtns. Comment
  CLARK-A1528-1152  Astragalus tricarinatus John C. Roos 1973-3-31 Riverside Whitewater 457 Comment
  CLARK-A1528-1167  Berberis dictyota John C. Roos 1952-2-29 5379 Riverside Comment
  CLARK-A1528-1201  Aesculus californica John C. Roos 1966-1-1 Riverside Box Springs Mountains 579 Comment
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Nov 26 2016
  CLARK-A1528-1240  Imperata brevifolia John C. Roos 1965-7-22 Riverside Palm Springs 149 Comment
  CLARK-A1528-1262  Tridens muticus John C. Roos 1946-11-30 3173 Riverside Chuckawalla Mountains Comment
  CLARK-A1528-1279  Muhlenbergia asperifolia John C. Roos 1946-9-14 3002 Riverside San Jacinto Mountains 1066 Comment
  CLARK-A1528-1386  Trianthema portulacastrum John C. Roos 1965-9-5 Riverside Chuckwalla Valley Comment
  CLARK-A1528-1387  Sesuvium verrucosum John C. Roos 1937-5-10 2332 Riverside Lake Elsinore Comment
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Jun 24 2014
  CLARK-A1528-1397  Amaranthus fimbriatus John C. Roos 1946-9-14 3019 Riverside Asbestos Mountain 1097 Comment
  CLARK-A1528-1405  Amaranthus retroflexus John C. Roos 1965-8-4 Riverside Arlington Comment
  CLARK-A1528-1421  Apiastrum angustifolium John C. Roos 1952-4-9 5503 Riverside Riverside 396 Comment
  CLARK-A1528-1427  Caucalis microcarpa John C. Roos 1952-4-9 5502 Riverside Riverside 396 Comment
  CLARK-A1528-1430  Cymopterus panamintensis var. acutifolius John C. Roos 1947-2-15 3243 Riverside Eagle Mountains Comment
  CLARK-A1528-1464  Asclepias subulata John C. Roos 1946-12-7 3179 Riverside Pushawalla Wash Comment
  CLARK-A1528-1469  Sarcostemma hirtellum John C. Roos 1937-4-18 Riverside Colorado Desert Comment
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Mar 3 2014
  CLARK-A1528-1501  Washingtonia filifera John C. Roos 1943-12-19 2762 Riverside Pushawalla Canyon Comment
  CLARK-A1528-1574  Artemisia dracunculus John C. Roos 1948-10-16 Riverside Beaumont Comment
  CLARK-A1528-159  Aster hesperius John C. Roos 1951-9-25 5258 Riverside Riverside 259 Comment
  CLARK-A1528-1613  Aster menziesii John C. Roos 1951-10-19 Riverside San Timoteo Canyon dry, semi-alkaline road side; with Artemisia douglasiana and Distichlis stricta; ; El Casco 7.5'Q 609 Comment
  CLARK-A1528-1619  Baccharis brachyphylla John C. Roos 1958-9-27 Riverside San Jacinto Mountains 914 Comment
  CLARK-A1528-1623  Baccharis emoryi John C. Roos 1948-11-6 4077 Riverside Box Springs Mountains Comment
  CLARK-A1528-1632  Baccharis sergiloides John C. Roos 1937-8-20 2500 Riverside San Jacinto Mountains Comment
  CLARK-A1528-165  Baccharis emoryi John C. Roos 1951-9-25 5285 Riverside Riverside 259 Comment
  CLARK-A1528-1652  Bidens frondosa John C. Roos 1951-9-25 5265 Riverside Riverside 259 Comment
  CLARK-A1528-1667  Brickellia desertorum John C. Roos 1946-9-14 3023 Riverside San Jacinto Mountains 1097 Comment
  CLARK-A1528-1670  Brickellia desertorum John C. Roos 1951-10-19 5328 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1691  Carthamus tinctorius John C. Roos 1965-7-7 Riverside Beaumont Comment
  CLARK-A1528-171  Bidens frondosa John C. Roos 1951-9-25 5265 Riverside Riverside 259 Comment
  CLARK-A1528-1739  Chrysothamnus teretifolius John C. Roos 1942-10-24 2577 Riverside Joshua Tree National Park 1523 Comment
  CLARK-A1528-174  Brickellia californica John C. Roos 1951-10-19 5324 Riverside Badlands 609 Comment
  CLARK-A1528-1771  Chrysopsis villosa John C. Roos 1965-8-18 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1777  Cirsium occidentale John C. Roos 1952-4-13 5523 Riverside Box Springs Mountains 487 Comment
  CLARK-A1528-1805  Eclipta alba John C. Roos 1951-9-22 5233 Riverside Riverside Comment
  CLARK-A1528-1811  Encelia virginensis subsp. actonii John C. Roos 1941-8-2 84 Riverside 609 Comment
  CLARK-A1528-1841  Eriophyllum multicaule John C. Roos 1952-5-19 5960 Riverside Moreno 502 Comment
  CLARK-A1528-1847  Gnaphalium bicolor John C. Roos 1952-2-29 5374 Riverside Reche Canyon 548 Comment
  CLARK-A1528-1863  Gutierrezia bracteata John C. Roos 1937-7-11 1506 Riverside Reche Canyon Comment
  CLARK-A1528-1920  Hemizonia kelloggii John C. Roos 1965-6-27 Riverside Reche Canyon Comment
  CLARK-A1528-1951  Hulsea vestita John C. Roos 1965-6-13 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1978  Lasthenia chrysostoma John C. Roos 1952-5-21 5706 Riverside San Jacinto River 426 Comment
  CLARK-A1528-2003  Machaeranthera tortifolia John C. Roos 1949-4-10 4225 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-202  Eclipta alba John C. Roos 1951-9-22 5233 Riverside Riverside 243 Comment
  CLARK-A1528-2022  Perityle emoryi John C. Roos 1946-12-7 3183 Riverside Pushawalla Palms Comment
  CLARK-A1528-2039  Brickellia desertorum John C. Roos 1950-9-30 4994 Riverside Box Springs Mountains 457 Comment
  CLARK-A1528-2110  Stephanomeria virgata John C. Roos 1965-10-7 Riverside Beaumont Comment
  CLARK-A1528-2125  Tetradymia spinosa var. longispina John C. Roos 1943-5-23 2671 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-2174  Baccharis brachyphylla John C. Roos 1963-10-19 Riverside Whitewater Wash 579 Comment
  CLARK-A1528-2223  Cryptantha micrantha John C. Roos 1949-4-11 4239 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2232  Cryptantha racemosa John C. Roos 1948-5-1 3815 Riverside Whitewater 609 Comment
  CLARK-A1528-2248  Pectocarya linearis subsp. ferocula John C. Roos 1937-3-24 1338 Riverside Pigeon Pass Comment
  CLARK-A1528-2249  Pectocarya linearis John C. Roos 1952-2-29 5371 Riverside Reche Canyon 457 Comment
  CLARK-A1528-2252  Pectocarya platycarpa John C. Roos 1937-5-2 1838 Riverside Frost Reservoir Comment
  CLARK-A1528-2270  Berberis nevinii John C. Roos 1955-3-5 6237 Riverside Scott's Canyon 426 Comment
  CLARK-A1528-2281  Chilopsis linearis John C. Roos 1946-9-2 2938 Riverside San Timoteo Canyon 701 Comment
  CLARK-A1528-2291  Arabis pulchra John C. Roos 1962-3-24 Riverside Whitewater Comment
  CLARK-A1528-2297  Athysanus pusillus John C. Roos 1952-2-29 5366 Riverside Reche Canyon 457 Comment
  CLARK-A1528-2325  Lepidium lasiocarpum John C. Roos 1948-5-15 3841 Riverside Eagle Mountains Comment
  CLARK-A1528-2336  Rorippa nasturtium-aquaticum John C. Roos 1948-4-24 3795 Riverside Whitewater Comment
  CLARK-A1528-2357  Tropidocarpum gracile John C. Roos 1937-2-21 1315 Riverside La Sierra Comment
  CLARK-A1528-2374  Nemacladus longiflorus var. breviflorus John C. Roos 1937-4-18 1795 Riverside Snow Creek Comment
  CLARK-A1528-2408  Lonicera subspicata var. johnstonii John C. Roos 1952-7-16 5813 Riverside 487 Comment
  CLARK-A1528-2409  Lonicera subspicata var. johnstonii John C. Roos 1952-7-16 5813 Riverside 487 Comment
  CLARK-A1528-2460  Silene antirrhina John C. Roos 1952-4-28 5590 Riverside Box Springs Mountains 396 Comment
  CLARK-A1528-2523  Atriplex lentiformis John C. Roos 1936-9-21 Riverside Indio Comment
  CLARK-A1528-2549  Atriplex polycarpa John C. Roos 1943-12-19 2763 Riverside Mecca Hills Comment
  CLARK-A1528-2552  Beta vulgaris John C. Roos 1937-5-23 2059 Riverside La Sierra Comment
  CLARK-A1528-2561  Chenopodium fremontii John C. Roos 1946-8-27 9212 Riverside Santa Rosa Mountains 2438 Comment
  CLARK-A1528-2607  Calystegia macrostegia John C. Roos 1950-4-22 4748 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-2662  Cupressus stephensonii John C. Roos 1962-5-19 Riverside Loma Linda Comment
  CLARK-A1528-2735  Astragalus didymocarpus John C. Roos 1938-4-28 1618 Riverside La Sierra Comment
  CLARK-A1528-2808  Lotus strigosus John C. Roos 1954-5-15 6120 Riverside Reche Canyon 731 Comment
  CLARK-A1528-2809  Lotus strigosus John C. Roos 1937-3-24 1339 Riverside Pigeon Pass Comment
  CLARK-A1528-2853  Lupinus truncatus John C. Roos 1938-4-4 730 Riverside La Sierra Comment
  CLARK-A1528-2858  Medicago polymorpha John C. Roos 1952-4-9 5487 Riverside Fairmont Park Comment
  CLARK-A1528-2860  Medicago sativa John C. Roos 1965-6-30 Riverside Perris Comment
  CLARK-A1528-2885  Trifolium microcephalum John C. Roos 1952-4-29 5600 Riverside Reche Canyon 457 Comment
  CLARK-A1528-295  Solidago occidentalis John C. Roos 1951-9-25 5282 Riverside Riverside 259 Comment
  CLARK-A1528-2975  Eucrypta micrantha John C. Roos 1966-3-26 Riverside Comment
  CLARK-A1528-2987  Nemophila menziesii John C. Roos 1947-3-21 3371 Riverside Reche Canyon Comment
  CLARK-A1528-3006  Phacelia distans John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3103  Mentha spicata John C. Roos 1952-8-6 5881 Riverside Fairmont Park 259 Comment
  CLARK-A1528-3104  Salvia apiana John C. Roos 1948-5-8 3823 Riverside Whitewater Comment
  CLARK-A1528-3122  Salvia mohavensis John C. Roos 1965-6-23 Riverside Lost Palms Canyon Comment
  CLARK-A1528-3165  Mentzelia involucrata John C. Roos 1948-4-24 3801 Riverside Whitewater 518 Comment
  CLARK-A1528-3185  Calochortus albus John C. Roos 1960-5-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-3221  Eremalche exilis John C. Roos 1949-3-19 4115 Riverside Indio Comment
  CLARK-A1528-3226  Hibiscus denudatus John C. Roos 1939-4-6 4145 Riverside Orocopia Mountains Comment
  CLARK-A1528-3247  Sphaeralcea ambigua subsp. rosacea John C. Roos 1937-8-19 1655 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3255  Abronia villosa var. aurita John C. Roos 1942-6-20 1279 Riverside San Jacinto Valley Comment
  CLARK-A1528-3269  Boerhavia torreyana John C. Roos 1946-11-29 3178 Riverside Hayfield Comment
  CLARK-A1528-3322  Camissonia cardiophylla John C. Roos 1946-12-7 3181 Riverside Pushawalla Wash Comment
  CLARK-A1528-3377  Epipactis gigantea John C. Roos 1941-8-2 87 Riverside San Jacinto Mountains 2133 Comment
  CLARK-A1528-3380  Epipactis gigantea John C. Roos 1948-4-24 3793 Riverside Whitewater 609 Comment
  CLARK-A1528-3390  Orobanche cooperi John C. Roos 1949-3-26 4125 Riverside Mecca Comment
  CLARK-A1528-3415  Platystemon californicus John C. Roos 1966-3-24 Riverside Winchester Comment
  CLARK-A1528-3431  Plantago erecta John C. Roos 1937-2-21 1311 Riverside Riverside Comment
  CLARK-A1528-3451  Navarretia hamata John C. Roos 1965-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-3462  Leptodactylon californicum John C. Roos 1965-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-3500  Gilia angelensis John C. Roos 1966-3-22 Riverside Edgemont Comment
  CLARK-A1528-3535  Langloisia schottii John C. Roos 1943-5-23 2663 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-3541  Notholaena newberryi John C. Roos 1936-11-21 Riverside La Sierra Comment
  CLARK-A1528-3547  Pinus coulteri John C. Roos 1948-6-19 3884 Riverside San Jacinto Mountains 1981 Comment
  CLARK-A1528-3563  Pinus quadrifolia John C. Roos 1936-9-15 2513 Riverside San Jacinto Mountains 1493 Comment
  CLARK-A1528-3588  Pellaea andromedifolia John C. Roos 1937-5-2 1417 Riverside La Sierra Comment
  CLARK-A1528-3599  Chorizanthe fimbriata John C. Roos 1937-4-23 1807 Riverside White Water Comment
  CLARK-A1528-3603  Chorizanthe procumbens John C. Roos 1937-5-2 1802 Riverside La Sierra Comment
  CLARK-A1528-362  Raphanus sativus John C. Roos, Lucille Roos 1951-10-24 5342 Riverside Pedley 243 Comment
  CLARK-A1528-3677  Eriogonum nudum subsp. pauciflorum John C. Roos 1943-10-16 2740 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-3695  Eriogonum pusillum John C. Roos 1943-5-23 2667 Riverside Little San Bernardino Mountains 914 Comment
  CLARK-A1528-3723  Eriogonum wrightii John C. Roos 1967-10-28 Riverside Whitewater 426 Comment
  CLARK-A1528-3797  Rumex californicus John C. Roos 1952-5-26 5719 Riverside Reche Canyon 457 Comment
  CLARK-A1528-3815  Calyptridium monandrum John C. Roos 1952-4-23 5581 Riverside Box Springs Mountains Comment
  CLARK-A1528-3836  Dodecatheon clevelandii John C. Roos 1952-2-29 5370 Riverside Box Springs Mountains 457 Comment
  CLARK-A1528-3862  Delphinium parishii subsp. parishii John C. Roos 1948-4-24 3791 Riverside Cabazon Comment
  CLARK-A1528-3947  Galium angustifolium John C. Roos 1937-5-2 1413 Riverside La Sierra Comment
  CLARK-A1528-3969  Thamnosma montana John C. Roos 1937-4-23 806 Riverside Whitewater Comment
  CLARK-A1528-3972  Adenostoma sparsifolium John C. Roos 1965-8-18 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4034  Prunus ilicifolia John C. Roos 1940-5-4 Riverside San Timoteo Canyon Comment
  CLARK-A1528-4054  Salix hindsiana var. leucodendroides John C. Roos 1937-5-23 617 Riverside Riverside Comment
  CLARK-A1528-4162  Antirrhinum filipes John C. Roos 1947-2-15 3238 Riverside Comment
  CLARK-A1528-4219  Linaria canadensis var. texana John C. Roos 1952-4-9 5504 Riverside Mount Rubidoux Comment
  CLARK-A1528-4223  Mohavea confertiflora John C. Roos 1958-3-29 Riverside Orocopia Mountains 304 Comment
  CLARK-A1528-4229  Mimulus bigelovii John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4270  Mimulus puniceus John C. Roos 1941-5-17 123 Riverside March Field Comment
  CLARK-A1528-4315  Penstemon pseudospectabilis John C. Roos 1949-4-10 4227 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4340  Datura discolor John C. Roos 1949-3-5 4094 Riverside Colorado Desert Comment
  CLARK-A1528-4356  Physalis acutifolia John C. Roos 1965-9-5 Riverside Blythe Comment
  CLARK-A1528-4374  Solanum wallacei John C. Roos 1938-3-28 727 Riverside La Sierra Comment
  CLARK-A1528-4412  Viola pedunculata John C. Roos 1952-3-19 5395 Riverside Box Springs Mountains 457 Comment
  CLARK-A1528-4434  Larrea tridentata John C. Roos 1947-2-1 3218 Riverside Coachella Valley Comment
  CLARK-A1528-4480  Aristida purpurea John C. Roos 1951-10-19 5325 Riverside Old Jackrabbit Trail 609 Comment
  CLARK-A1528-4495  Avena fatua John C. Roos 1952-4-9 5472 Riverside Riverside 274 Comment
  CLARK-A1528-4502  Bothriochloa barbinodis John C. Roos 1946-9-14 3027 Riverside Santa Rosa Mountains 1158 Comment
  CLARK-A1528-4544  Bromus mollis John C. Roos 1939-5-27 Riverside Reche Canyon Comment
  CLARK-A1528-4552  Bromus rubens John C. Roos 1937-5-1 1409 Riverside La Sierra Comment
  CLARK-A1528-4607  Elymus triticoides John C. Roos 1951-10-24 5344 Riverside Riverside 259 Comment
  CLARK-A1528-4640  Eragrostis curvula John C. Roos 1965-9-16 Riverside Lakeview Comment
  CLARK-A1528-4656  Festuca megalura John C. Roos, Lucille Roos 1950-4-15 4741 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-4674  Gastridium ventricosum John C. Roos 1965-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-4711  Leptochloa filiformis John C. Roos 1958-9-28 Riverside Coachella Comment
  CLARK-A1528-4717  Lolium perenne subsp. multiflorum John C. Roos 1953-4-21 5915 Riverside March Air Force Base 457 Comment
  CLARK-A1528-4755  Muhlenbergia microsperma John C. Roos 1937-5-1 1406 Riverside La Sierra Comment
  CLARK-A1528-4763  Muhlenbergia rigens John C. Roos 1947-11-1 Riverside Eagle Mountain Comment
  CLARK-A1528-4788  Panicum urvilleanum John C. Roos 1737-4-28 1283 Riverside Whitewater Comment
  CLARK-A1528-4799  Phalaris paradoxa John C. Roos 1952-5-21 5702 Riverside San Jacinto River 426 Comment
  CLARK-A1528-4838  Poa scabrella John C. Roos 1942-5-1 1158 Riverside Dry Morongo Canyon 609 Comment
  CLARK-A1528-4853  Eriophyllum confertiflorum var. trifidum John C. Roos 1937-4-18 1369 Riverside Snow Creek Comment
  CLARK-A1528-4854  Viguiera deltoidea var. parishii John C. Roos 1937-4-18 1376 Riverside Snow Creek Comment
  CLARK-A1528-4877  Erigeron foliosus John C. Roos 1938-5-26 474 Riverside La Sierra Comment
  CLARK-A1528-4880  Rorippa nasturtium-aquaticum John C. Roos 1937-5-23 2341 Riverside La Sierra Comment
  CLARK-A1528-4885  Nemacladus rubescens John C. Roos 1937-4-28 1290 Riverside Comment
  CLARK-A1528-4943  Hulsea vestita subsp. callicarpha John C. Roos 1942-6-20 1275 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4948  Hulsea heterochroma John C. Roos 1942-6-20 1274 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4987  Eriophyllum confertiflorum var. tridactylum John C. Roos 1942-6-20 1277 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4991  Encelia virginensis subsp. actonii John C. Roos 1948-4-24 3798 Riverside Whitewater Comment
  CLARK-A1528-4996  Ambrosia dumosa John C. Roos 1948-4-24 3796 Riverside Whitewater Comment
  CLARK-A1528-5006  Antennaria rosea John C. Roos 1937-8-18 2409 Riverside San Jacinto Mountains 2743 Comment
  CLARK-A1528-5007  Chenopodium murale John C. Roos 1937-8-17 2408 Riverside San Jacinto Comment
  CLARK-A1528-5010  Silene laciniata John C. Roos 1937-6-7 2399 Riverside Comment
  CLARK-A1528-5015  Dithyrea californica John C. Roos 1937-4-18 1367 Riverside Comment
  CLARK-A1528-5122  Chenopodium ambrosioides var. anthelminticum John C. Roos 1965-8-4 Riverside Comment
  CLARK-A1528-5138  Descurainia pinnata John C. Roos 1952-3-26 5414 Riverside Riverside 259 Comment
  CLARK-A1528-5177  Melica imperfecta John C. Roos 1950-4-22 4752 Riverside Box Springs Mountains 792 Comment
  CLARK-A1528-5185  Solanum sarrachoides John C. Roos 1953-6-29 5925 Riverside Cherry Valley 975 Comment
  CLARK-A1528-5200  Salix hindsiana var. leucodendroides John C. Roos, Lucille Roos 1952-3-1 5382 Riverside Moreno 609 Comment
  CLARK-A1528-5217  Ambrosia dumosa John C. Roos 1937-4-28 766 Riverside Hayfield Comment
  CLARK-A1528-5226  Baccharis brachyphylla John C. Roos 1949-9-17 4659 Riverside Whitewater Wash 548 Comment
  CLARK-A1528-5230  Draba sonorae John C. Roos 1952-3-19 5402 Riverside Box Springs Mountains 457 Comment
Read comments
Oct 23 2014
  CLARK-A1528-5235  Amaranthus retroflexus John C. Roos 1937-8-17 2406 Riverside San Jacinto Comment
  CLARK-A1528-5241  Microseris linearifolia John C. Roos 1950-4-5 4721 Riverside Pigeon Pass 426 Comment
  CLARK-A1528-5255  Stipa speciosa John C. Roos 1940-5-4 877 Riverside Reche Canyon Comment
  CLARK-A1528-5268  Stipa pulchra John C. Roos 1952-5-7 5621 Riverside Edgemont 487 Comment
  CLARK-A1528-5283  Tridens muticus John C. Roos 1947-1-11 3198 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5299  Tridens muticus John C. Roos 1949-4-23 Riverside Eagle Mountains Comment
  CLARK-A1528-5304  Stipa pulchra John C. Roos 1937-5-10 430 Riverside Perris Comment
  CLARK-A1528-5309  Stipa pulchra John C. Roos 1950-4-22 4747 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-5312  Sporobolus poiretii John C. Roos, Lucille Roos 1951-9-25 5277 Riverside Riverside 259 Comment
  CLARK-A1528-5377  Pluchea sericea John C. Roos, Lucille Roos 1951-10-24 5340 Riverside Pedley 228 Comment
  CLARK-A1528-5437  Phacelia crenulata John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5445  Aster menziesii John C. Roos 1951-10-19 Riverside San Timoteo Canyon dry, semi-alkaline road side; with Artemisia douglasiana and Distichlis stricta; ; El Casco 7.5' 609 Comment
  CLARK-A1528-5492  Forestiera neomexicana John C. Roos 1965-7-25 Riverside Santa Rosa Mountains Comment
  CLARK-A1528-5500  Aster spinosus John C. Roos 1965-7-5 Riverside Blythe Comment
  CLARK-A1528-5505  Brickellia desertorum John C. Roos 1951-10-19 5328 Riverside San Jacinto Mountains 457 Comment
  CLARK-A1528-5547  Stipa coronata John C. Roos 1937-5-1 1291 Riverside Badlands Comment
  CLARK-A1528-5564  Scirpus olneyi John C. Roos, Lucille Roos 1952-6-10 5762 Riverside Riverside 259 Comment
  CLARK-A1528-5633  Berberis nevinii John C. Roos 1948-2-21 3772 Riverside San Timoteo Canyon Comment
  CLARK-A1528-5638  Coldenia canescens John C. Roos 1948-5-15 3859 Riverside Eagle Mountains Comment
  CLARK-A1528-5690  Lepechinia cardiophylla John C. Roos 1960-5-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-5713  Linanthus liniflorus subsp. pharnaceoides John C. Roos 1960-5-30 Riverside Santa Ana Mountains 1066 Comment
  CLARK-A1528-5723  Colubrina californica John C. Roos 1960-4-8 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5728  Ruta graveolens John C. Roos 1948-2-21 3771 Riverside Reche Canyon 457 Comment
  CLARK-A1528-573  Mentha citrata John C. Roos 1951-9-25 5289 Riverside Riverside 259 Comment
  CLARK-A1528-5749  Fagonia californica var. glutinosa John C. Roos 1947-2-1 3220 Riverside Painted Canyon Comment
  CLARK-A1528-61  Eriochloa acuminata John C. Roos 1951-9-25 5294 Riverside Riverside 259 Comment
  CLARK-A1528-666  Ludwigia peploides John C. Roos 1951-9-25 5250 Riverside Riverside 259 Comment
  CLARK-A1528-6880  Ribes indecorum John C. Roos 1946-12-27 3194 Riverside Box Springs Mountains Comment
  CLARK-A1528-7824  Agrostis scabra John C. Roos 1937-8-18 494 Riverside San Jacinto Mountains Comment
  CLARK-A1528-7852  Epipactis gigantea John C. Roos 1948-5-15 3838 Riverside Eagle Mountains Comment
  CLARK-A1528-7881  Galium angustifolium subsp. angustifolium John C. Roos 1948-5-8 3819 Riverside Whitewater Canyon 548 Comment
  LA102177  Bouteloua aristidoides var. aristidoides John C. Roos; 1946-10-26 3139 Riverside Chuckwalla Mountains Comment
  LA102179  Elymus condensatus John C. Roos; 1963-8-10 sn Riverside Blythe Comment
Read comments
Mar 10 2014
  LA102370  Brickellia nevinii John C. Roos; 1965-9-12 sn Riverside Santa Ana Mountains, Tin Mine Canyon, 3 mi. SW of Corona 548 Comment
  LA105134  Eriochloa aristata var. aristata John C. Roos; 1985-12-22 5962 Riverside Deep Canyon, Coachella Valley, 0.25 NW of Valerie Jean, W of Hwy 86, SE 0.25 -30 Comment
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Mar 23 2014
  LA105321  Muhlenbergia microsperma John C. Roos; 1946-10-26 3144 Riverside Chuckwalla Mountains, near tanks Comment
  OBI33596  Nemacladus longiflorus J. C. Roos 1947-3-15 3343 Riverside 1 mi E of Valle vista, San Jacinto Valley 549 Comment
  POM250764  Petunia parviflora J. C. Roos 1937-6-7 514 Riverside South foot of Jackrabbit Trail, near San Jacinto. Comment
  POM251782  Muhlenbergia minutissima J. C. Roos 1937-8-18 2 Riverside Hidden Lake, San Jacinto Mountains. Comment
  POM251788  Samolus parviflorus J. C. Roos 1937-6-19 23 Riverside Murrietta Hot Springs. Comment
  POM262895  Wislizenia refracta subsp. refracta J. C. Roos 1936-4-22 606 Riverside 10 miles E of Indio Comment
  POM262897  Pinus quadrifolia J. C. Roos 1938-8-7 585 Riverside Summit Pines to Palms Road, San Jacinto Mt. Comment
  POM262957  Layia platyglossa subsp. platyglossa J. C. Roos 1941-5-10 130 Riverside Meadow above Hemet Lake, San Jacinto Mts. Comment
  POM263357  Phalaris lemmonii J. C. Roos 1937-5-10 456 Riverside Lake Elsinore. Comment
  POM264311  Nemophila menziesii var. integrifolia J. C. Roos 1937-5-10 666 Riverside Lake Elsinore. Comment
  POM265652  Wislizenia refracta subsp. palmeri J. C. Roos 1937-4-29 792 Riverside Northeast of Desert Center. Comment
  POM265699  Lastarriaea coriacea J. C. Roos 1937-5-2 1802 Riverside La Sierra, western Riverside. [Collection is Jack Frost Lake. aka Frost Reservoir, apparently a part of La Sierra, Loma Linda University Campus] ca. 1937 south of Indiana Avenue and west of Sayward Circle, near Pierce. Comment
  POM265788  Chaenactis artemisiifolia J. C. Roos 1937-5-10 2070 Riverside South of Lake Elsinore Comment
  POM265809  Daucus pusillus J. C. Roos 1937-5-2 1399 Riverside La Sierra, western Riverside. [Collection is Jack Frost Lake. aka Frost Reservoir, apparently a part of La Sierra [Loma Linda University Campus] ca. 1937 south of Indiana Avenue and west of Sayward Circle, near Pierce., Owned by city of Riverside ca. 2000 Comment
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May 21 2009
  POM265812  Gayophytum diffusum subsp. parviflorum J. C. Roos 1937-8-18 2529 Riverside Round Valley, San Jacinto Mountains. 2744 Comment
  POM266274  Lolium perenne subsp. multiflorum J. C. Roos 1937-5-2 1397 Riverside La Sierra, western Riverside. [Collection is Jack Frost Lake. aka Frost Reservoir, apparently a part of La Sierra [Loma Linda University Campus] ca. 1937 south of Indiana Avenue and west of Sayward Circle, near Pierce;, Owned by city of Riverside ca. 2000 Comment
  POM266279  Heterotheca horrida subsp. cinerascens J. C. Roos 1942-10-24 2571 Riverside Wonderland of Rocks' Joshua Tree National Monument. Comment
  POM266318  Anthemis cotula J. C. Roos 1937-5-23 23434 Riverside La Sierra. Comment
  POM266331  Vulpia microstachys var. pauciflora J. C. Roos 1937-5-2 1282 Riverside La Sierra, western Riverside. [Collection is Jack Frost Lake. aka Frost Reservoir, apparently a part of La Sierra [Loma Linda University Campus] ca. 1937 south of Indiana Avenue and west of Sayward Circle, near Pierce;, Owned by city of Riverside ca. 2000 Comment
  POM266353  Quercus cornelius-mulleri J. C. Roos 1942-5-1 1132 Riverside Morongo Canyon. Comment
  POM274196  Bouteloua curtipendula J. C. Roos 1948-8-27 2786 Riverside Near Pinon Flat, Santa Rosa Mountains. 1372 Comment
  RSA351415  Atriplex muelleri J. C. Roos 1965-10-17 s.n. Riverside 20 miles west of Blythe Comment
  RSA40567  Pectocarya setosa J. C. Roos 1947-4-5 3417 Riverside Pinyon Flats, Santa Rosa Mtns. 1220 Comment
  RSA40569  Erigeron divergens J. C. Roos 1947-4-5 3418 Riverside on stony slope, SE of Pinyon Flats, Santa Rosa Mts. 1372 Comment
  RSA40607  Baccharis brachyphylla J. C. Roos 1946-9-14 3008 Riverside Dry desert near Dos Palmos Spring, E of Asbestos Mountain. 1067 Comment
  RSA40611  Sporobolus contractus J. C. Roos 1946-9-14 3028 Riverside 1 mile east of Pinyon Flats, Santa Rosa Mountains Comment
  RSA444464  Mohavea confertiflora J. C. Roos 1966-3-20 s.n. Riverside Wash 2 miles SE of Desert Center Comment
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Aug 22 2011
  RSA444475  Olneya tesota J. C. Roos 1965-12-4 s.n. Riverside 2 miles SE of Desert Center. 366 Comment
  RSA444484  Nemophila menziesii J. C. Roos 1966-4-5 s.n. Riverside Winchester. Comment
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Mar 20 2011
  RSA444664  Fagonia laevis J. C. Roos 1966-3-26 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA444677  Brickellia nevinii J. C. Roos 1965-9-12 s.n. Riverside Tin Mine Canyon, 3 mi. SW of Corona. 549 Comment
  RSA444791  Chamaesyce setiloba J. C. Roos 1958-9-28 s.n. Riverside Pinyon Flats, Santa Rosa Mtns. 1220 Comment
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Apr 3 2011
  RSA44860  Epilobium canum subsp. latifolium J. C. Roos, L. Roos 1947-11-1 3754 Riverside Eagle Mountains, Lost Palms Canyon. Comment
  RSA449941  Salvia greatae J. C. Roos 1958-3-29 s.n. Riverside Salt Creek Wash, 3 miles N of Coachella Canal on E base of Orocopia Mtns. 305 Comment
  RSA450053  Sorghum bicolor subsp. arundinaceum J. C. Roos 1965-10-25 s.n. Riverside Coachella: S of Indio. Comment
  RSA450140  Mirabilis laevis var. villosa J. C. Roos 1966-3-26 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA450180  Juniperus californica A. R. Roos 1934-1-22 s.n. Riverside Morongo Canyon. Comment
  RSA450253  Eriogonum wrightii var. nodosum J. C. Roos 1965-9-26 s.n. Riverside Rocky point near Palm Springs Station. Comment
  RSA450255  Prunus virginiana var. demissa J. C. Roos 1965-7-3 s.n. Riverside Dark Canyon, north fork of San Jacinto River. Comment
  RSA450315  Lupinus bicolor J. C. Roos 1966-3-22 s.n. Riverside Edgemont. Comment
  RSA450446  Pectocarya penicillata J. C. Roos 1966-4-5 s.n. Riverside Winchester Comment
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Mar 20 2011
  RSA450460  Bouteloua aristidoides J. C. Roos 1946-9-14 3026 Riverside Pinyon Flats, Santa Rosa Mountains. 1220 Comment
  RSA450491  Hemizonia kelloggii J. C. Roos 1965-6-27 s.n. Riverside Reche Canyon Comment
  RSA450654  Sporobolus cryptandrus J. C. Roos 1965-8-15 s.n. Riverside Gilman Hot Springs, San Jacinto Valley. Comment
  RSA450769  Atrichoseris platyphylla J. C. Roos 1966-3-26 s.n. Riverside 2 mi S.E. of Desert Center. Comment
  RSA45211  Dudleya saxosa subsp. aloides J. C. Roos, L. Roos 1949-4-23 4285 Riverside Monson Canyon, Eagle Mountains. Comment
  RSA45227  Salvia greatae J. C. Roos 1949-3-19 4101 Riverside Salt Creek Wash, about 7 miles northeast of Dos Palmos Spring. Comment
  RSA45510  Calycoseris wrightii J. C. Roos, L. Roos 1949-4-9 4209 Riverside 30 mi. N of Blythe, near Riverside Mts Comment
  RSA45531  Fagonia pachyacantha J. C. Roos, L. Roos 1949-4-6 4146 Riverside Orocopia Mts., 2.5 mi. northeast of Dos Palmos Springs. 183 Comment
  RSA45533  Baccharis brachyphylla J. C. Roos 1949-4-2 4133 Riverside Near Palm oasis in the side canyon of Whitewater Canyon. 549 Comment
  RSA45536  Astragalus aridus J. C. Roos 1949-3-26 4117 Riverside Coachella Valley, Indio. Comment
  RSA45538  Sphaeralcea emoryi subsp. variabilis J. C. Roos, L. Roos 1949-3-19 4104 Riverside near Dos Palmos Spring, N side of Salton Sea Comment
  RSA477112  Quercus cornelius-mulleri J. C. Roos 1965-9-26 s.n. Riverside Pinyon Flats, Santa Rosa Mts. Comment
  RSA48866  Baccharis brachyphylla J. C. Roos, L. Roos 1949-9-17 4659 Riverside Canyon bottom near oasis with Palms, a side canyon, E side Whitewater Wash, W slope Painted Hill, 2.2 miles N of Hwy 99 Comment
  RSA648667  Kallstroemia californica J. C. Roos 1963-10-24 s.n. Riverside Hayfields, Colorado Desert. Comment
  RSA648674  Aristida adscensionis J. C. Roos 1946-10-26 3143 Riverside in the Chuckwalla Mtns., Colorado Desert. Comment
  RSA659480  Mirabilis laevis var. villosa J. C. Roos 1966-3-26 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA659610  Ribes malvaceum var. viridifolium J. C. Roos 1947-3-15 3341 Riverside Chaparral on a burn. The west face of the San Jacinto Mtns. Comment
  RSA659623  Plagiobothrys leptocladus J. C. Roos 1952-4-23 5572 Riverside 1 miles southeast of Perris. 427 Comment
  RSA659691  Plagiobothrys collinus var. californicus J. C. Roos 1952-2-29 5368 Riverside Reche Canyon. 457 Comment
  RSA659692  Cryptantha racemosa J. C. Roos 1948-5-1 3815 Riverside Whitewater. 610 Comment
  RSA659714  Hemizonia kelloggii J. C. Roos 1965-6-27 s.n. Riverside Reche Canyon Comment
  RSA659721  Eriochloa acuminata var. acuminata J. C. Roos 1937-11-28 s.n. Riverside East Washington St., Riverside. Comment
  RSA659722  Gutierrezia bracteata J. C. Roos 1965-9-26 s.n. Riverside Rocky point near Palm Springs Station. Comment
  RSA659764  Tridens muticus J. C. Roos 1966-11-12 s.n. Riverside Spring Tank, Chuckwalla Mtns. Comment
  RSA659769  Plagiobothrys canescens var. canescens J. C. Roos 1952-4-30 5605 Riverside Hills between Camp Haan and Riverside 518 Comment
  RSA659789  Lupinus arizonicus J. C. Roos 1947-2-15 3268 Riverside Lost Palms Cyn. S face of Eagle Mtns., west of Hayfeilds. Comment
  RSA662539  Bergia texana J. C. Roos 1952-5-28 5730 Riverside San Jacinto River bottomland 1 mile south-east of Perris. 427 Comment
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May 15 2016
  RSA664940  Polygala cornuta var. fishiae J. C. Roos 1960-5-30 s.n. Riverside Ridge east of Sugarloaf Pk. 1067 Comment
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Sep 15 2008
  RSA69814  Muhlenbergia asperifolia J. C. Roos 1951-9-25 5257 Riverside West end Fairmount Park 259 Comment
  RSA69818  Eriochloa acuminata J. C. Roos 1951-9-25 5294 Riverside Riverside 259 Comment
  RSA69827  Aster bernardinus J. C. Roos 1951-10-19 5323 Riverside San Timoteo Canyon, El Casco. 610 Comment
  RSA69830  Machaeranthera asteroides J. C. Roos 1951-10-19 5330 Riverside Gilman Hot Springs 459 Comment
  RSA78225  Nolina parryi J. C. Roos, L. Roos 1952-10-18 5904 Riverside Hidden Valley Campground 1220 Comment
  RSA85081  Astragalus didymocarpus J. C. Roos 1952-4-30 5607 Riverside Hills between Camp Haan and Riverside 518 Comment
  RSA85086  Hordeum intercedens J. C. Roos 1952-4-23 5571 Riverside 1 miles southeast of Perris 427 Comment
  RSA85090  Phacelia distans J. C. Roos 1952-4-9 5493 Riverside Riverside, W face of Mt. Rubidoux. 400 Comment
  RSA85101  Stylocline gnaphaloides J. C. Roos 1952-4-23 5580 Riverside Box Springs Mtns; 1 yr old burn 457 Comment
  RSA85117  Gilia capitata subsp. abrotanifolia J. C. Roos, Lucille Roos 1952-4-27 5585 Riverside San Timoteo Canyon south of Redlands. 427 Comment
  RSA85119  Hypochaeris glabra J. C. Roos 1952-4-30 5611 Riverside Hills between Camp Haan and Riverside 518 Comment
  RSA85121  Clarkia epilobioides J. C. Roos 1952-5-7 5618 Riverside Box Springs Mountains, north of Canyon Crest Heights 488 Comment
  RSA85126  Bromus arizonicus J. C. Roos 1952-4-9 5473 Riverside east base of Mt. Rubidoux 274 Comment
  RSA85153  Myosurus minimus subsp. apus J. C. Roos 1952-4-9 5515 Riverside Edgemont near Box Springs. 488 Comment
  RSA85405  Silene antirrhina J. C. Roos, L. Roos 1952-4-28 5590 Riverside Box Springs Mtns. 396 Comment
  RSA85442  Crassula solieri J. C. Roos 1952-4-9 5514 Riverside Edgemont, near Box Springs 488 Comment
  RSA85460  Sphaeralcea ambigua subsp. ambigua J. C. Roos 1952-4-16 5542 Riverside Box Springs 488 Comment
  RSA85571  Medicago polymorpha var. brevispina J. C. Roos 1952-4-9 5487 Riverside Fairmount Park. 259 Comment
  RSA85583  Allium praecox J. C. Roos 1952-4-2 5468 Riverside Box Springs grade east of Riverside. 427 Comment
  RSA85584  Nasturtium officinale J. C. Roos 1950-4-9 5477 Riverside Fairmont Park, Riverside. 259 Comment
  RSA85588  Vulpia microstachys var. ciliata J. C. Roos 1952-4-9 5482 Riverside Fairmount Park 259 Comment
  SBBG53832  Colubrina californica J. C. Roos 1967-11-11 Riverside Chuckwalla Mtns, 3 mi SE of Desert Center Comment
  SD167194  Cryptantha barbigera var. fergusoniae J. C. Roos 1948-4-24 3807 Riverside East San Bernardino Mountains/Sopnoran Desert; Whitewater Wash. 518 Comment
  SEINET14214762  Aristida purpurea J. C. Roos 1965-8-15 Riverside Gilman Hot Springs, San Jacinto Valley Comment
  UC1010313  Brickellia desertorum John and Lucille Roos 1950-9-30 4996 Riverside .5 mi se of Citrus Experiment Station (Box Springs Grade); Box Springs Grade 396 Comment
  UC1010317  Brickellia desertorum John and Lucille Roos 1950-10-14 5006 Riverside near corner of Alta and Canal Sts (e end of Jurupa Hills, West Riverside); Jurupa Hills 304 Comment
  UC1023391  Portulaca halimoides John and Lucille Roos 1952-10-18 5900 Riverside Little San Bernardino Mountains, Hidden Valley Campground Hidden Valley Campground; Little San Bernardino Mountains, Hidden Valley Campground 1219 Comment
  UC1043018  Bromus trinii John and Lucille Roos 1952-5-24 5711 Riverside hills n of Moreno 518 Comment
  UC1043024  Loeflingia squarrosa var. squarrosa John C. Roos 1952-5-14 5664 Riverside along roadside 2 mi nw Perris 487 Comment
  UCD129703  Brickellia californica J. C. Roos 1937-10-3 Riverside In Temescal Canyon. Comment
  UCD130386  Chaenactis glabriuscula var. glabriuscula J. C. Roos 1937-4-18 s.n. Riverside Cabazon. Comment
  UCD135049  Pseudognaphalium biolettii John Roos 1947-3-21 3372 Riverside Plateau', Reche Canyon. Comment
  UCD56512  Aristida purpurea J. C. Roos 1965-8-15 s.n. Riverside San Jacinto Valley, Gilman Hot Springs. Comment
  UCR17558  Triodanis biflora John C. Roos, L. Roos 1952-5-30 5732 Riverside One year old burn on hills of North Moreno between Moreno and Redlands. In branch of San Timoteo Canyon. 503 Comment
  UCR17609  Tridens muticus John C. Roos, Lucille Roos 1949-4-23 4286 Riverside Sonoran (Colorado) Desert, south foot Eagle Mtns, west side of mouth of Lost Palms Wash, north of Shavers [=Chiriaco] Summit Comment
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Apr 24 2011
  UCR18572  Senecio californicus John C. Roos 1966-4-5 s.n. Riverside Winchester Comment
  UCR18591  Helianthus niveus subsp. canescens John C. Roos 1952-3-27 5423 Riverside Sonoran (Colorado) Desert, Ramon road about 2 mi east of Palm Springs 122 Comment
  UCR18593  Tetradymia comosa John C. Roos, L. Roos 1952-7-8 5808 Riverside Reche Canyon 488 Comment
  UCR18627  Pulicaria paludosa John C. Roos 1962-10-19 s.n. Riverside Western Colorado Desert/ San Bernardino Mtns., Whitewater 549 Comment
  UCR18629  Senecio mohavensis John C. Roos, Lucille Roos 1949-4-10 4223 Riverside Sonoran (Colorado) Desert, Chuckwalla Mts, canyon 3.5 mi. SE of Desert Center 612 Comment
  UCR18630  Trifolium truncatum John C. Roos 1952-4-2 5458 Riverside Edgemont 488 Comment
  UCR18663  Solidago californica John C. Roos 1952-8-27 5892 Riverside Reche Canyon, Haas Ranch 457 Comment
  UCR18785  Adiantum capillus-veneris John C. Roos 1948-5-15 3850 Riverside Sonoran (Colorado) Desert, Eagle Mountains, upper Lost Palms Canyon 1037 Comment
  UCR18799  Tiquilia palmeri John C. Roos 1965-10-17 s.n. Riverside Sonoran (Colorado) Desert, 10 mi. west of Blythe Comment
  UCR18878  Cressa truxillensis John C. Roos 1952-5-21 5703 Riverside Perris-Aguanga Basin region, San Jacinto River bottomland 1.5 mi. SE of Perris. 427 Comment
  UCR18881  Juglans californica John C. Roos 1952-6-25 5789 Riverside Thickets at W end of Fairmont Park, Riverside 260 Comment
  UCR18902  Atriplex lentiformis John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Blythe 76 Comment
  UCR18922  Prunus fasciculata John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns, Lost Palm Canyon Comment
  UCR18937  Astragalus insularis var. harwoodii John C. Roos, Lucille Roos 1949-4-10 4222 Riverside Sonoran (Colorado) Desert, N base of the Chuckwalla Mountains Comment
  UCR18939  Psoralea californica John C. Roos 1941-5-10 125 Riverside Santa Rosa Mtns, Pinyon Flats Campground 1220 Comment
  UCR18965  Calystegia sepium subsp. binghamiae John C. Roos, L. Roos 1952-6-10 5763 Riverside San Bernardino Valley Region, Fairmont Park in Riverside, edge of lake 259 Comment
  UCR18988  Quercus berberidifolia John C. Roos 1965-9-14 s.n. Riverside hills SW of Beaumont. Comment
  UCR19015  Deschampsia danthonioides var. gracilis John C. Roos 1952-4-16 5543 Riverside Edgemont, near Box Springs 488 Comment
  UCR19083  Berberis dictyota John C. Roos 1952-2-29 5379 Riverside SW of Reche Canyon 610 Comment
  UCR19101  Malacothamnus densiflorus John C. Roos 1960-6-5 s.n. Riverside Peninsular Range; Santa Ana Mtns., off the Ortega Hwy, NE slope of Sugarloaf Peak [=Pleasants Peak] 1067 Comment
  UCR19106  Boerhavia coccinea John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Desert Center Comment
  UCR19121  Petalonyx linearis John C. Roos, Lucille Roos 1949-4-6 4143 Riverside Sonoran (Colorado) Desert, Canyon in the Orocopia Mountains, 2.5 mi. NE of Dos Palmas Spring 152 Comment
  UCR19126  Petalonyx thurberi John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns, Lost Palms Wash Comment
  UCR19156  Epipactis gigantea John C. Roos 1948-5-15 3838 Riverside Sonoran (Colorado) Desert, Eagle Mtns., Lost Palms Canyon Comment
  UCR19167  Navarretia atractyloides John C. Roos 1950-5-27 4818 Riverside Peninsular Range, Hills NE of summit of Reche Canyon 762 Comment
  UCR19172  Phacelia distans John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 miles southeast of Desert Center 366 Comment
  UCR19180  Krameria erecta John C. Roos 1948-5-15 3857 Riverside Sonoran (Colorado) Desert, S foot of the Eagle Mtns, mouth of Lost Palms Wash Comment
  UCR19191  Chloracantha spinosa John C. Roos 1965-7-5 s.n. Riverside Sonoran (Colorado) Desert, Blythe 75 Comment
  UCR19204  Calandrinia ciliata John C. Roos 1966-3-24 s.n. Riverside Winchester 457 Comment
  UCR19208  Pinus monophylla John C. Roos 1947-4-5 3435 Riverside Santa Rosa Mtns., Pinyon Flats 1311 Comment
  UCR19249  Chorizanthe parryi var. parryi John C. Roos 1950-5-27 4819 Riverside Peninsular Range, Hills NE of summit of Reche Canyon 762 Comment
  UCR19256  Brickellia incana John C. Roos 1947-11-1 3751 Riverside Sonoran (Colorado) Desert, Eagle Mountains, mouth of Lost Palms Canyon, & up the canyon some distance Comment
  UCR19270  Eriogonum apiculatum John C. Roos 1946-8-27 2925 Riverside Santa Rosa Mountains, Santa Rosa Mtn., roadside 2195 Comment
  UCR19294  Stipa lepida John C. Roos 1950-5-6 4778 Riverside 2-3 miles SW of Corona Comment
  UCR19495  Baccharis brachyphylla John C. Roos 1963-10-19 s.n. Riverside San Bernardino Mtns., Whitewater Wash near Painted Hill 581 Comment
  UCR19539  Lepidospartum squamatum John C. Roos 1965-10-12 s.n. Riverside San Bernardino Mtns./Sonoran (Colorado) Desert, Whitewater Comment
  UCR19662  Paspalum distichum John C. Roos 1965-6-30 s.n. Riverside Perris-Aguanga Basin region, Perris Comment
  UCR19689  Avena barbata John C. Roos 1966-3-22 s.n. Riverside San Jacinto Valley, Gilman [Hot] Springs 610 Comment
  UCR19710  Trifolium gracilentum John C. Roos 1952-4-9 5485 Riverside Hill by Fairmont Park, Riverside 259 Comment
  UCR19712  Crassula aquatica John C. Roos 1952-4-9 5514 Riverside Rolling flats at Edgemont, near Box Springs 488 Comment
  UCR20310  Amaranthus blitoides John C. Roos 1965-7-27 s.n. Riverside Hemet Comment
  UCR20331  Filago californica John C. Roos 1952-4-9 5510 Riverside San Bernardino Basin Region, Riverside, southeast face of Mount Rubidoux 335 Comment
  UCR20389  Lithophragma affine John C. Roos, L. Roos 1954-4-17 6067 Riverside Canyon [1 mile] SE of [summit of] Reche Canyon 686 Comment
  UCR20438  Myosurus minimus subsp. apus John C. Roos 1952-4-9 5515 Riverside Rolling flats at Edgemont, near Box Springs 488 Comment
  UCR20584  Bromus arizonicus John C. Roos 1952-4-9 5473 Riverside Riverside, E base of Mt. Rubidoux 274 Comment
  UCR23254  Rumex salicifolius var. denticulatus John C. Roos 1952-5-26 5719 Riverside Haas' Ranch, Reche Canyon 457 Comment
  UCR23272  Brickellia desertorum John C. Roos 1950-10-15 5009 Riverside San Bernardino Mtns., Dry Morongo Canyon, c. l mi south of Riverside-San Bernardino county line 612 Comment
  UCR23296  Gnaphalium canescens John C. Roos, L. Roos 1950-10-21 5014 Riverside Mojave Desert, Little San Bernardino Mountains, Wonderland of Rocks [Joshua Tree National Park] 1220 Comment
  UCR23410  Rhus integrifolia John C. Roos 1944-1-29 2766 Riverside Box Springs Mtns. east of Riverside near Pigeon Pass 750 Comment
  UCR23479  Ceanothus papillosus John C. Roos 1962-5-5 s.n. Riverside Peninsular Range, Santa Ana Mtns., east slope Strawberry [=Santiago? Sugarloaf?] Peak [on the Orange County line] Comment
  UCR23515  Adenostoma sparsifolium John C. Roos 1936-9-15 2514 Riverside San Jacinto Mtns., Near the summit of the Pines to Palms Hwy 1494 Comment
  UCR23520  Epilobium campestre John C. Roos 1952-6-18 5779 Riverside Moreno Valley, Edgemont [now part of city of Moreno Valley] 457 Comment
  UCR23545  Pectocarya penicillata John C. Roos 1966-4-5 s.n. Riverside Hills near Winchester Comment
  UCR23552  Capsella bursa-pastoris John C. Roos 1966-3-24 s.n. Riverside Hemet, in a vacant lot Comment
  UCR23574  Monardella macrantha subsp. hallii John C. Roos 1962-6-30 s.n. Riverside Peninsular Range/Santa Ana Mtns., Sugarloaf [=Pleasants Peak, possibly Orange Co., near line] 1220 Comment
  UCR23584  Cryptantha muricata John C. Roos 1950-4-15 4732 Riverside The summit of Reche Canyon 793 Comment
  UCR23687  Githopsis diffusa subsp. diffusa John C. Roos 1950-4-22 4750 Riverside Hills NE of the summit of Reche Canyon 823 Comment
  UCR23710  Arenaria macradenia John C. Roos 1943-5-23 2673 Riverside S Mojave Desert, Little San Bernardino Mtns 1524 Comment
  UCR23733  Heterotheca sessiliflora subsp. echioides John C. Roos 1965-9-16 s.n. Riverside On State Street, near Florida St., in Hemet 486 Comment
  UCR23734  Heterotheca sessiliflora subsp. echioides John C. Roos 1937-8-19 2499 Riverside San Jacinto Mtns, Idyllwild Comment
  UCR23760  Fagonia laevis John C. Roos 1966-3-26 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 mi SE of Desert Center 366 Comment
  UCR23826  Gutierrezia californica John C. Roos 1965-9-26 s.n. Riverside Sonoran (Colorado) Desert, rocky point near Palm Springs Station [Windy Point?] Comment
  UCR23854  Astragalus nuttallianus John C. Roos 1958-3-15 s.n. Riverside Sonoran (Colorado) Desert, 3 mi. SE of Desert Center, Chuckwalla Mtns. Comment
  UCR23867  Aristida purpurea var. nealleyi John C. Roos 1965-9-26 s.n. Riverside Mojave Desert, Palm Springs, in a parkway 122 Comment
  UCR23917  Bromus grandis John C. Roos 1942-6-20 995 Riverside Peninsular Range; San Jacinto Mtns, Dark Canyon Camp, North Fork San Jacinto River 1829 Comment
  UCR23935  Festuca myuros John C. Roos, L. Roos 1950-4-15 4741 Riverside Peninsular Range, Box Springs Mtns., Pigeon Pass 457 Comment
  UCR23972  Bouteloua barbata John C. Roos 1946-9-14 3025 Riverside Santa Rosa Mtns., Pinyon Flats 1220 Comment
  UCR23982  Bromus trinii John C. Roos 1962-3-24 s.n. Riverside San Bernardino Mtns., Whitewater Canyon 854 Comment
  UCR23991  Eragrostis curvula var. curvula John C. Roos 1965-9-16 s.n. Riverside Lakeview Comment
  UCR23993  Peucephyllum schottii John C. Roos 1966-2-5 s.n. Riverside Western Colorado Desert, Pushawalla Wash near 1000 Palms, Indio Hills Comment
  UCR23998  Phalaris aquatica John C. Roos 1962-6-30 s.n. Riverside Santa Ana Mtns, Head of Tin Mine Canyon Comment
  UCR24005  Crypsis schoenoides John C. Roos 1969-11-22 s.n. Riverside San Jacinto Valley, east of Moreno. Quail Lake at the S end of Jack Rabbit Trail. 427 Comment
  UCR24143  Hesperocallis undulata John C. Roos 1949-3-19 4114 Riverside Western Colorado Desert, Sandy flats 2 or 3 miles east of Mecca Comment
  UCR24197  Nolina parryi John C. Roos, Lucille Roos 1949-4-23 4282 Riverside Sonoran (Colorado) Desert, Eagle Mtns., Munsen Canyon Comment
  UCR24259  Oxytheca trilobata John C. Roos 1943-5-23 2672 Riverside S Mojave Desert, Little San Bernardino Mtns 1524 Comment
  UCR24320  Eriogonum plumatella John C. Roos 1943-10-17 2742 Riverside Sonoran (Colorado) Desert, Dry Morongo Wash 671 Comment
  UCR24378  Tridens muticus John C. Roos 1966-11-12 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns, Spring Tank 457 Comment
  UCR25195  Schismus barbatus John C. Roos, L. Roos 1951-3-24 5033 Riverside San Bernardino Valley, Riverside, Mount Rubidoux 396 Comment
  UCR25367  Platystemon californicus John C. Roos 1952-4-13 5532 Riverside N side of the Box Springs Mountains 457 Comment
  UCR25369  Dryopteris arguta John C. Roos 1952-4-13 5519 Riverside Peninsular Range, Box Springs Mountains 520 Comment
  UCR25380  Fagonia pachyacantha John C. Roos, Lucille Roos 1949-4-6 4146 Riverside Sonoran (Colorado) Desert, Canyon in the Orocopia Mountains, 2.5 mi. NE of Dos Palmas Spring 152 Comment
  UCR25406  Galium stellatum subsp. eremicum John C. Roos, Lucille Roos 1949-4-6 4144 Riverside Sonoran (Colorado) Desert, Canyon in the Orocopia Mountains, 2.5 mi. NE of Dos Palmas Spring 152 Comment
  UCR25421  Plagiobothrys canescens John C. Roos 1952-4-16 5559 Riverside Box Springs Mountains, Pigeon Pass 457 Comment
  UCR25458  Gastridium ventricosum John C. Roos 1939-5-27 s.n. Riverside Reche Canyon Comment
  UCR25544  Layia platyglossa John C. Roos 1941-4-19 170 Riverside Peninsular Range, Loma Linda Hills/Box Springs Mtns.; plateau in Reche Canyon 671 Comment
  UCR25546  Eucrypta chrysanthemifolia var. chrysanthemifolia John C. Roos 1941-9-14 174 Riverside Plateau in Reche Canyon Comment
  UCR25604  Castilleja exserta John C. Roos 1952-4-16 5558 Riverside Box Springs Mountains, Pigeon Pass 457 Comment
  UCR25621  Muhlenbergia asperifolia John C. Roos 1951-9-25 5257 Riverside City of Riverside, west end of Fairmount Park 259 Comment
  UCR25770  Brickellia desertorum John C. Roos 1943-8-17 2709 Riverside Plateau in Reche Canyon Comment
  UCR25782  Tauschia arguta John C. Roos 1952-4-13 5521 Riverside Peninsular Range, Box Springs Mountains 520 Comment
  UCR25793  Cerastium glomeratum John C. Roos 1952-4-16 5556 Riverside Box Springs Mountains, Pigeon Pass 457 Comment
  UCR25794  Silene gallica John C. Roos 1952-4-16 5555 Riverside Reche Canyon. 457 Comment
  UCR25798  Geranium carolinianum John C. Roos 1952-5-7 5620 Riverside Box Springs Mountains above Canyon Crest Heights 503 Comment
  UCR25812  Rumex conglomeratus John C. Roos 1952-6-10 5759 Riverside San Bernardino Valley Region, Fairmont Park in Riverside, edge of lake 259 Comment
  UCR25855  Psorothamnus emoryi John C. Roos, Lucille Roos 1949-4-6 4139 Riverside Sonoran (Colorado) Desert, east of Mecca Comment
  UCR25931  Spergularia marina John C. Roos 1947-3-15 3349 Riverside Santa Rosa Mountains/Colorado Desert, Deep Canyon 366 Comment
  UCR25988A  Nemacladus glanduliferus John C. Roos 1947-3-15 3354 A Riverside Sonoran (Colorado) Desert, Santa Rosa Mountains, mouth of Deep Canyon at foot of mtns. 366 Comment
  UCR26079  Baccharis brachyphylla John C. Roos 1946-9-14 3008 Riverside Santa Rosa Mtns, Dos Palmas Spring, east of Asbestos Mountain 1070 Comment
  UCR26227  Cymopterus panamintensis var. acutifolius John C. Roos 1947-2-15 3243 Riverside Sonoran (Colorado) Desert, Lost Palms Canyon, south face of Eagle Mtns., west of Hayfield Dry Lake 997 Comment
  UCR26264  Erodium brachycarpum John C. Roos 1966-3-22 s.n. Riverside Moreno Valley, Edgemont. Comment
  UCR26300  Justicia californica John C. Roos, Lucille Roos 1949-4-11 4233 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, Corn Spring Comment
  UCR26337  Phalaris lemmonii John C. Roos 1966-3-24 s.n. Riverside Winchester (near Hemet) 457 Comment
  UCR27651  Eschscholzia parishii John C. Roos 1947-2-15 3262 Riverside Sonoran (Colorado) Desert, Lost Palms Canyon, Eagle Mtns Comment
  UCR27654  Eriogonum thomasii John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 miles southeast of Desert Center 366 Comment
  UCR28721  Nemacladus ramosissimus John C. Roos 1947-3-15 3344 Riverside San Jacinto Valley, Valle Vista, east of Hemet 549 Comment
  UCR30540  Setaria verticillata John C. Roos 1952-5-14 5660 Riverside San Bernardino Valley, Riverside, corner of Iowa Avenue and 8th Street 305 Comment
  UCR30589  Rhus ovata John C. Roos 1948-5-29 3872 Riverside San Bernardino Mtns., Whitewater Canyon 856 Comment
  UCSB37352  Styrax redivivus Roos, John 1966-4-23 Riverside Santa Ana Mtns. S. of Corona Comment
  UCSB37379  Aphanes occidentalis Roos, John 1950-4-22 Riverside hills N.E. of the summit of Reche Canyon 822 Comment
  UCSB37795  Aristida purpurea Roos, John 1965-9-26 Riverside Palm Springs 121 Comment
  UCSB37797  Helianthus niveus Roos, John 1965-4-28 Riverside Palm Springs Comment
  UCSB37801  Ericameria paniculata Roos, John 1965-11-6 Riverside Whitewater 304 Comment
  UCSB37834  Bergia texana Roos, John 1952-5-28 Riverside San Jacinto river bottomland 1 mile southeast of Perris Comment
  UCSB37889  Krameria bicolor Roos, John 1965-6-23 Riverside Colorado Desert, Lost Palms Canyon in the Eagle Mtns. Comment
  UCSB41534  Adenostoma sparsifolium Roos, John 1965-8-18 Riverside Thomas Valley, summit Palms to Pines Hwy., San Jacinto Mtns. Comment
  UCSB41544  Fagonia laevis Roos, John 1966-3-26 Riverside Rocky slopes 2 miles S.E. of Desert Center Comment
  UCSB42115  Camissoniopsis bistorta Roos, John 1966-4-5 Riverside Winchester Comment
  UCSB42151  Epilobium campestre Roos, John 1952-6-18 Riverside Edgemont 457 Comment
  UCSB42179  Eucrypta micrantha Roos, John 1958-2-21 Riverside Corn Springs, Chuckawalla Mtns. Comment
  UCSB42221  Acmispon heermannii Roos, John 1952-6-13 Riverside Pigeon Pass 426 Comment
  UCSB42284  Bouteloua barbata John C. Roos 1965-9-5 Riverside collected 18.0 mi W Blythe - Blythe Comment
  UCSB45529  Leptochloa fusca subsp. uninervia Roos, John; Roos, Lucille 1951-10-24 Riverside Flats between Arlington and Pedley 228 Comment
Read comments
Apr 2 2011
  UCSB45531  Callitriche marginata Roos, John 1952-4-16 Riverside Edgemont; near Box springs 487 Comment
  UCSB45553  Trifolium depauperatum var. amplectens Roos, John 1966-3-24 Riverside Flats west of Hemet Comment
  UCSB45581  Plagiobothrys canescens Roos, John 1952-4-30 Riverside Hills between Camp Haan and Riverside 518 Comment
  UCSB45588  Bergia texana Roos, John 1952-5-28 Riverside San Jacinto river bottomland 1 mile southeast of Perris 426 Comment
Read comments
May 15 2016
  UCSB45623  Aristida purpurea Roos, John; Roos, Lucille 1950-10-21 Riverside Wonderland of Rocks, Little San Bernardino Mtns 1219 Comment
  UCSB45957  Gutierrezia californica Roos, John 1965-6-21 Riverside The hills 2 miles south of Beaumont Comment
  UCSB46879  Frankenia palmeri Roos, John 1965-6-30 Riverside Perris Comment
  UCSB51403  Bouteloua aristidoides John C. Roos 1946-9-14 3026 Riverside collected in in the Inyon Flats, in the Santa Rosa Mountains Pinyon Flats 1219 Comment
  UCSB51405  Sporobolus cryptandrus Roos, John 1965-8-15 Riverside Along a roadside in Gilman Hot Springs Comment
  UCSB51407  Eriochloa acuminata Roos, A. 1937-11-28 Riverside East Washington St., Riverside Comment
  UCSB57020  Suaeda nigra Roos, John 1952-5-14 Riverside Along San Jacinto River; 1 mile east of Perris 426 Comment
  POM263173  Chloris virgata J. C. Roos 1957-8-20 356 Riverside Blythe. Comment
  POM301541  Solanum triflorum J. C. Roos 1937-6-7 1453 Riverside Aguanga. Comment
  POM301714  Digitaria sanguinalis J. C. Roos 1937-8-17 2547 Riverside San Jacinto. Comment
  RSA0037330  Astragalus insularis var. harwoodii John C. Roos 1958-3-15 s.n. Riverside Chuckwalla Mtns., 3 miles SE of Desert Center. Comment
  RSA0051251  Polypogon monspeliensis John C. Roos 1952-4-23 5576 Riverside West side of Box Springs Mts. above Canyon Crest Heights. 457 Comment
  RSA0080080  Melica frutescens A. R. Roos 1937-4-18 s.n. Riverside Snow Creek, N. side of the San Jacinto Mtns. Comment
  RSA0117408  Collinsia concolor J. C. Roos 1952-4-13 5530 Riverside Box Springs Mts. 488 Comment
  RSA40609  Mollugo cerviana J. C. Roos 1946-9-14 3015 Riverside Thomas Valley, San Jacinto Mountains. 1372 Comment
  RSA444675  Amaranthus retroflexus J. C. Roos 1965-8-4 s.n. Riverside Arlington Comment
  RSA449948  Senecio vulgaris J. C. Roos 1967-2-7 s.n. Riverside City of Hemet. Comment
  RSA450130  Bidens pilosa J. C. Roos 1965-8-18 s.n. Riverside In Corona. Comment
  RSA457393  Agrostis stolonifera A. R. Roos 1937-8-19 10693 Riverside Idyllwild, San Jacinto Mountains. Comment
  RSA47452  Schedonorus arundinaceus J. C. Roos 1949-5-21 4317 Riverside Temecula. 304 Comment
  RSA658425  Veronica persica J. C. Roos 1965-6-21 s.n. Riverside Hemet. Comment
  RSA69813  Digitaria ischaemum J. C. Roos 1951-9-25 5276 Riverside Fairmount Park 259 Comment
  RSA78210  Chloris virgata J. C. Roos 1952-9-3 5897 Riverside Citrus Experiment Station, Riverside. Comment
  RSA92546  Gilia angelensis J. C. Roos, Lucille Roos 1954-4-17 6069 Riverside Pass at summit of Reche Canyon. 732 Comment
  RSA92568  Astragalus gambelianus J. C. Roos, L. Roos 1952-5-19 5689 Riverside On hills N of Moreno. 518 Comment
  RSA92585  Atriplex coronata var. notatior J. C. Roos 1952-5-14 5668 Riverside San Jacinto river bottomlands 1 miles southeast of Perris. 426 Comment
  RSA92723  Epilobium pygmaeum J. C. Roos 1952-5-14 5662 Riverside Edgemont, near Box Springs. 488 Comment
  RSA92724  Loeflingia squarrosa J. C. Roos 1952-5-14 5664 Riverside 2 mi. northwest of Perris. 503 Comment
Read comments
May 21 2011
  RSA92747  Clarkia purpurea subsp. quadrivulnera J. C. Roos 1952-5-26 5716 Riverside Hass Ranch. Reche Canyon. 457 Comment
  RSA92749  Lasthenia gracilis J. C. Roos 1952-5-21 5706 Riverside San Jacinto River bottomland 1.5 miles southeast of Perris 426 Comment
  SEINET13945547 Image available Fagonia laevis J. C. Roos 1965-1 sn Riverside Lost Palm Canyon, Eagle Mts., Colorado Desert Comment
  UCR24038  Phalaris paradoxa John C. Roos 1940-6-10 1912 Sacramento Sacramento Valley, lowlands west of Sacramento 4 Comment
  CAS-BOT-BC106152  Brickellia desertorum John Roos; Lucille Roos 1950-9-20 4993 San Bernardino N.W. base of Blue (Rattlesnake) Mtn. at east end DeBerry Stree, Midway beetween Loma Linda and Highgrove. 381 Comment
  CAS-BOT-BC106237  Brickellia californica J. C. Roos 1965-9-11 s.n. San Bernardino San Bernardino Mountains - Mill Creek Comment
  CAS-BOT-BC108726  Ribes cereum J. C. Roos 1965-6-26 s.n. San Bernardino Upper Santa Ana Basin near Fish Creek, San Bernardino Mountains. Comment
  CAS-BOT-BC136040  Ericameria parishii var. parishii J. C. Roos 1955-9-3 6571 San Bernardino Summit Little Pigeon Pass 2 miles west of Loma Linda. 335 Comment
  CAS-BOT-BC137835  Andropogon glomeratus var. glomeratus John Roos; Lucille Roos 1950-11-4 5023 San Bernardino Arrowhead Hot Springs, south base San Bernardino Mountains. 609 Comment
  CAS-BOT-BC143380  Horkelia wilderae J. C. Roos 1955-8-20 6505 San Bernardino Barton Flats near Barton Creek, San Bernardino Mountains 1889 Comment
  CAS-BOT-BC148734  Bromus carinatus var. marginatus J. C. Roos 1965-7-17 s.n. San Bernardino San Bernardino Mountains. Barton Flats. Comment
  CAS-BOT-BC170143  Alnus rhombifolia J. C. Roos 1965-9-11 s.n. San Bernardino Mill Creek, San Bernardino Mountains Comment
  CAS-BOT-BC172131  Clarkia dudleyana J. C. Roos 1981-7-1 s.n. San Bernardino Igo's near Mountain Home Village and Mill Creek, San Bernardino Mtns. Comment
  CAS-BOT-BC172566  Clarkia purpurea subsp. purpurea J. C. Roos 1965-6-12 s.n. San Bernardino Igo's near Mountain Home Village in Mill Creek Canyon, San Bernardino Mtns. Comment
  CAS-BOT-BC177316  Astragalus acutirostris John Roos; Lucille Roos 1952-5-10 5631 San Bernardino Kramer Hills, [Mohave] Mojave Desert 853 Comment
  CAS-BOT-BC186420  Atriplex torreyi J. C. Roos; A. R. Roos 1950-8-8 4930 San Bernardino 1 mile N. of Oro Grande, Mohave [Mojave] Desert 792 Comment
  CAS-BOT-BC196829  Lupinus breweri var. grandiflorus J. C. Roos 1965-7-18 s.n. San Bernardino Bear Valley, San Bernardino Mtns. Comment
  CAS-BOT-BC209078  Digitaria sanguinalis J. C. Roos 1965-7-5 s.n. San Bernardino Loma Linda Comment
  CAS-BOT-BC209079  Digitaria sanguinalis John Roos; Lucille Roos 1950-10-7 4997 San Bernardino 163 West Barton Road, Grand Terrace 304 Comment
  CAS-BOT-BC210916  Achnatherum parishii subsp. depauperatum J. C. Roos; A. R. Roos 1950-8-5 4895 San Bernardino North slope Clark Mtn., about 1 1/2 miles S.W. of Coliseum Mine, eastern Mohave [Mojave] Desert 1737 Comment
  CAS-BOT-BC213602  Eragrostis mexicana subsp. mexicana A. R. Roos 1937-11-25 s.n. San Bernardino Highland Comment
  CAS-BOT-BC213893  Elymus trachycaulus subsp. trachycaulus J. C. Roos 1965-7-18 s.n. San Bernardino Moonridge, Bear Valley, San Bernardino Mountains Comment
  CAS-BOT-BC216429  Achnatherum lettermanii J. C. Roos 1965-7-17 s.n. San Bernardino Stetson Creek, Barton Flats, San Bernardino Mountains Comment
  CAS-BOT-BC227038  Leptosiphon floribundus subsp. floribundus J. C. Roos 1965-6-26 s.n. San Bernardino Barton Flats, San Bernardino Mtns. Comment
  CAS-BOT-BC227764  Elymus elymoides J. C. Roos 1965-7-17 s.n. San Bernardino Barton Flats, San Bernardino Mtns. Comment
  CAS-BOT-BC235449  Sporobolus cryptandrus John C. Roos 1950-9-1 4948 San Bernardino Valley Wells Station, Mojave Desert 1127 Comment
  CAS-BOT-BC236666  Sporobolus airoides J. C. Roos 1965-6-7 s.n. San Bernardino Victorville Comment
  CAS-BOT-BC243046  Poa secunda subsp. secunda J. C. Roos 1967-5-30 s.n. San Bernardino Ridge on the E end of Broom Flat, N of Onyx Peak, San Bernardino Mountains Comment
  CAS-BOT-BC243472  Schismus barbatus J. C. Roos 1965-6-6 s.n. San Bernardino Mill Creek near Fallsvale, San Bernardino Mtns. Comment
  CAS-BOT-BC265555  Eriogonum parishii J. C. Roos 1965-10-2 s.n. San Bernardino Camp Angelus, San Bernardino Mtns. Comment
  CAS-BOT-BC284148  Eragrostis pectinacea var. pectinacea J. C. Roos 1965-7-5 s.n. San Bernardino Loma Linda 304 Comment
  CAS-BOT-BC294858  Erigeron breweri var. porphyreticus John Roos; Lucille Roos 1949-6-27 4508 San Bernardino N. side Kingston Mts., NE San Bernardino Co. 1828 Comment
  CAS-BOT-BC298557  Erigeron divergens J. C. Roos 1965-6-26 s.n. San Bernardino Upper Santa Ana Canyon, near the Heart Bar area, San Bernardino Mtns. Comment
  CAS-BOT-BC305800  Helianthus petiolaris John Roos; Lucille Roos 1951-9-9 5199 San Bernardino Highway 99 at Etiwanda Ave. between Ontario and Fontana 304 Comment
  CAS-BOT-BC306710  Helenium bigelovii J. C. Roos 1965-9-11 s.n. San Bernardino Bank of Mill Creek, San Bernardino Mtns. Comment
  CAS-BOT-BC328146  Sanvitalia abertii J. C. Roos; A. R. Roos 1950-8-5 4893 San Bernardino 1 mile south of Coliseum Mine, Clark Mountains, eastern Mohave Desert 1645 Comment
  CAS-BOT-BC328912  Tetradymia argyraea J. C. Roos 1950-9-2 4965 San Bernardino 1 mile SE of Coliseum Mine, Clark Mtns., Mojave Desert 1615 Comment
  CAS-BOT-BC365330  Solidago confinis J. C. Roos 1946-9-21 3043 San Bernardino Lucerne Valley in the southern Mojave Desert. Box S Spring 1082 Comment
  CAS-BOT-BC38171  Caulanthus amplexicaulis J. C. Roos 1947-6-21 3690 San Bernardino San Bernardino Mountains. Roadside near Big Bear Lake. 1889 Comment
  CAS-BOT-BC388484  Herniaria hirsuta var. cinerea John C. Roos 1954-6-5 6123 San Bernardino Loma Linda, San Bernardino Valley 320 Comment
  CAS-BOT-BC434563  Boerhavia wrightii John Roos; Lucille Roos 1950-10-21 5018 San Bernardino Twenty-nine Palms, Mohave Desert. 579 Comment
  CAS-BOT-BC62399  Quercus chrysolepis John C. Roos 1947-3-8 3306 San Bernardino South edge of Mojave Desert at Deep Creek Public Camp, north base of San Bernardino Mts. 914 Comment
  CAS-BOT-BC73719  Celtis reticulata John C. Roos 1950-9-2 4964 San Bernardino East slope of Clark Mts., about 1 1/2 miles S.E. of Coliseum Mine, eastern [Mohave] Mojave Desert. 1524 Comment
  CAS-BOT-BC84677  Anthemis cotula J. C. Roos 1965-6-29 s.n. San Bernardino Bryn Mawr 304 Comment
  CAS-BOT-BC90844  Artemisia nova John C. Roos 1946-8-29 2768 San Bernardino Eagle Point, Bear Valley, San Bernardino Mts. 2042 Comment
  CLARK-A1528-1011  Calochortus splendens John C. Roos 1941-5-6 135 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-1016  Veronica serpyllifolia subsp. humifusa John C. Roos 1937-7-21 San Bernardino San Bernardino Mountains 1920 Comment
  CLARK-A1528-1021  Sidalcea pedata John C. Roos 1937-7-29 1980 San Bernardino San Bernardino Mountains 2316 Comment
  CLARK-A1528-1098  Madia elegans John C. Roos 1937-7-18 401 San Bernardino San Antonio Canyon Comment
  CLARK-A1528-113  Amaranthus retroflexus John C. Roos 1951-9-17 5217 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-1197  Grayia spinosa John C. Roos 1941-4-5 193 San Bernardino Dry Morongo Canyon Comment
  CLARK-A1528-1236  Cordylanthus filifolius John C. Roos 1940-9-1 231 San Bernardino Cajon Pass 761 Comment
  CLARK-A1528-1292  Claytonia spathulata var. tenuifolia John C. Roos 1937-6-5 1474 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-1323  Prunella vulgaris subsp. vulgaris John C. Roos 1959-7-2 San Bernardino Loma Linda 365 Comment
  CLARK-A1528-1324  Prunella vulgaris subsp. lanceolata John C. Roos 1937-7-21 2007 San Bernardino San Bernardino Mountains 1920 Comment
  CLARK-A1528-1349  Populus trichocarpa var. ingrata John C. Roos 1948-7-10 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-1352  Galium parishii John C. Roos 1936-7-30 958 San Bernardino San Bernardino Mountains 3047 Comment
  CLARK-A1528-1366  Leptodactylon pungens John C. Roos 1943-7-4 2723 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-1370  Acer macrophyllum John C. Roos 1946-8-31 2936 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-1391  Amaranthus albus John C. Roos 1965-7-4 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-1416  Rhus ovata John C. Roos 1966-3-27 San Bernardino Loma Linda Hills 304 Comment
  CLARK-A1528-1450  Perideridia parishii John C. Roos 1937-7-29 1682 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-147  Ambrosia psilostachya var. californica John C. Roos 1951-9-24 5243 San Bernardino Loma Linda Comment
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Aug 20 2014
  CLARK-A1528-1484  Aralia californica John C. Roos 1937-7-15 383 San Bernardino San Gabriel Mountains Comment
  CLARK-A1528-1493  Agave utahensis var. nevadensis John C. Roos 1948-9-18 4028 San Bernardino Clark Mountain Range 1523 Comment
  CLARK-A1528-1498  Nolina parryi subsp. wolfii John C. Roos 1949-6-27 4502 San Bernardino Kingston Mountains 1828 Comment
  CLARK-A1528-1499  Yucca baccata John C. Roos 1948-9-19 4027 San Bernardino Clark Mountains 1067-1219 Comment
  CLARK-A1528-1510  Allium nevadense var. cristatum John C. Roos 1949-5-29 4369 San Bernardino Clark Mountain 1676 Comment
  CLARK-A1528-1536  Ambrosia eriocentra John C. Roos 1949-5-29 4370 San Bernardino Clark Mountain 1523 Comment
  CLARK-A1528-1573  Artemisia dracunculus John C. Roos 1968-9-21 San Bernardino San Bernardino Mountains 2438 Comment
  CLARK-A1528-1579  Artemisia ludoviciana John C. Roos 1937-3-1 2480 San Bernardino Victorville Comment
  CLARK-A1528-1618  Ageratina herbacea John C. Roos 1950-9-2 4969 San Bernardino Clark Mountain 1706 Comment
  CLARK-A1528-1644  Baileya pauciradiata John C. Roos 1937-4-28 2479 San Bernardino Rice Comment
  CLARK-A1528-1666  Brickellia desertorum John C. Roos 1957-10-19 6658 San Bernardino Loma Linda 438 Comment
  CLARK-A1528-1722  Chrysothamnus nauseosus John C. Roos 1950-10-11 5005 San Bernardino Mojave Desert 914 Comment
  CLARK-A1528-1765  Chrysanthemum leucanthemum John C. Roos 1966-6-26 San Bernardino Loma Linda Comment
  CLARK-A1528-1817  Erigeron breweri John C. Roos 1949-6-27 4508 San Bernardino Kingston Mountains 1828 Comment
  CLARK-A1528-1826  Conyza bonariensis John C. Roos 1951-9-18 5219 San Bernardino Loma Linda 335 Comment
  CLARK-A1528-1835  Eriophyllum confertiflorum John C. Roos 1952-5-11 5652 San Bernardino Scott's Canyon 426 Comment
  CLARK-A1528-1855  Galinsoga parviflora John C. Roos 1954-5-11 6116 San Bernardino Loma Linda 320 Comment
  CLARK-A1528-1864  Gutierrezia microcephala John C. Roos 1950-8-4 San Bernardino Clark Mountain Comment
  CLARK-A1528-1868  Gutierrezia sarothrae John C. Roos 1966-8-6 San Bernardino San Bernardino Mountains 2438 Comment
  CLARK-A1528-1894  Haplopappus venetus subsp. vernonioides John C. Roos 1951-9-24 5248 San Bernardino Loma Linda Comment
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Aug 20 2014
  CLARK-A1528-1899  Haplopappus palmeri John C. Roos 1946-10-23 3133 San Bernardino Loma Linda Comment
  CLARK-A1528-196  Conyza canadensis John C. Roos 1951-9-17 5212 San Bernardino Loma Linda 320 Comment
  CLARK-A1528-1992  Hymenoxys biennis John C. Roos 1948-9-18 4063 San Bernardino Clark Mountains 1828 Comment
  CLARK-A1528-2076  Sanvitalia abertii John C. Roos, Alfred R. Roos 1950-8-5 4893 San Bernardino Clark Mountain Range 1645 Comment
  CLARK-A1528-2077  Sanvitalia abertii John C. Roos 1950-9-1 4954 San Bernardino Clark Mountain 1645 Comment
  CLARK-A1528-2095  Solidago occidentalis John C. Roos 1946-10-2 San Bernardino San Bernardino 304 Comment
  CLARK-A1528-2107  Stephanomeria virgata John C. Roos 1965-7-18 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2115  Taraxacum californicum John C. Roos 1959-5-16 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2156  Haplopappus cuneatus John C. Roos 1941-11-15 870 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2162  Senecio fremontii subsp. occidentalis John C. Roos 1936-7-30 954 San Bernardino San Bernardino Mountains 3352 Comment
  CLARK-A1528-2219  Cryptantha jamesii var. abortiva John C. Roos 1937-7-21 San Bernardino Lost Creek 1981 Comment
  CLARK-A1528-2228  Cryptantha muricata John C. Roos 1948-6-13 3879 San Bernardino San Gabriel Mountains 1219 Comment
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Mar 20 2014
  CLARK-A1528-2243  Lappula redowskii John C. Roos 1937-5-29 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2286  Arabis parishii John C. Roos 1967-5-30 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2307  Caulanthus crassicaulis John C. Roos 1949-5-28 San Bernardino Clark Mountain 1645 Comment
  CLARK-A1528-2310  Dithyrea californica John C. Roos 1969-6-12 San Bernardino Mojave Desert Comment
  CLARK-A1528-2320  Lepidium dictyotum John C. Roos 1950-4-7 4725 San Bernardino Rabbit Springs Comment
  CLARK-A1528-2337  Rorippa obtusa John C. Roos 1946-9-15 3033 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2362  Opuntia ramosissima John C. Roos 1937-4-26 San Bernardino Providence Mountains Comment
  CLARK-A1528-2403  Amaranthus palmeri John C. Roos 1951-9-19 5223 San Bernardino Loma Linda 335 Comment
  CLARK-A1528-2412  Sambucus mexicana John C. Roos 1965-6-27 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-242  Heterotheca grandiflora John C. Roos 1951-9-19 5224 San Bernardino Loma Linda 335 Comment
  CLARK-A1528-2519  Atriplex argentea subsp. expansa John C. Roos 1938-8-19 2756 San Bernardino Loma Linda Comment
  CLARK-A1528-2528  Atriplex lentiformis John C. Roos, Lucille Roos 1954-10-2 6252 San Bernardino San Bernardino Comment
  CLARK-A1528-2597  Salsola iberica John C. Roos 1965-7-5 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-2610  Cressa truxillensis John C. Roos 1954-7-18 6202 San Bernardino Mojave Desert 60 Comment
  CLARK-A1528-2640  Euphorbia peplus John C. Roos 1946-8-30 2992 San Bernardino Loma Linda Comment
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Jan 21 2015
  CLARK-A1528-2674  Ephedra viridis John C. Roos 1950-8-4 San Bernardino Clark Mountain Comment
  CLARK-A1528-2682  Pyrola minor John C. Roos 1937-7-22 1169 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2711  Ricinus communis John C. Roos 1937-9-5 2554 San Bernardino Loma Linda Comment
  CLARK-A1528-2717  Tragia ramosa John C. Roos 1950-9-3 4978 San Bernardino Clark Mountain Range 1859 Comment
  CLARK-A1528-2755  Astragalus pomonensis John C. Roos 1965-6-27 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-2788  Cucurbita foetidissima John C. Roos 1952-6-13 5764 San Bernardino Reche Canyon 365 Comment
  CLARK-A1528-2799  Lotus grandiflorus John C. Roos 1965-6-16 San Bernardino Comment
  CLARK-A1528-2833  Lupinus flavoculatus John C. Roos 1949-6-20 4415 San Bernardino Little San Bernardino Mountains 1676 Comment
  CLARK-A1528-2865  Oxytropis oreophila John C. Roos 1941-8-27 38 ? San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2895  Trifolium wormskioldii John C. Roos 1965-6-26 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-2919  Quercus dumosa John C. Roos, Lucille Roos 1952-11-1 5907 San Bernardino San Bernardino Valley 365 Comment
  CLARK-A1528-2961  Geranium carolinianum John C. Roos 1943-4-27 2630 San Bernardino Comment
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Dec 17 2016
  CLARK-A1528-2967  Eriodictyon angustifolium John C. Roos 1949-6-20 4410 San Bernardino New York Mountains 1615 Comment
  CLARK-A1528-2981  Nama hispida John C. Roos 1949-4-9 4221 San Bernardino Vidal 15' quadrangle Comment
  CLARK-A1528-3051  Pyrola picta John C. Roos 1941-9-9 78 San Bernardino San Bernardino Mountains 2224 Comment
  CLARK-A1528-3056  Lupinus excubitus John C. Roos 1965-7-18 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3057  Lupinus excubitus John C. Roos 1965-6-6 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3073  Cystopteris fragilis John C. Roos 1937-7-20 1991 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3078  Nicolletia occidentalis John C. Roos 1950-10-21 5017 San Bernardino Little San Bernardino Mountains 914 Comment
  CLARK-A1528-3092  Cheilanthes covillei John C. Roos 1941-11-15 872 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3142  Monardella linoides John C. Roos, Alfred R. Roos 1950-8-6 4913 San Bernardino Kingston Mountains 2163 Comment
  CLARK-A1528-3153  Monardella odoratissima John C. Roos 1965-7-17 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3160  Mentzelia albicaulis John C. Roos 1937-4-25 544 San Bernardino Mojave Desert Comment
  CLARK-A1528-3190  Calochortus kennedyi John C. Roos 1949-4-30 4264 San Bernardino Hesperia 914 Comment
  CLARK-A1528-3195  Calochortus nuttallii John C. Roos 1937-7-17 630 San Bernardino San Gabriel Mountains Comment
  CLARK-A1528-3235  Malacothamnus orbiculatus John C. Roos 1946-9-21 3048 San Bernardino San Bernardino Mountains 1828 Comment
  CLARK-A1528-3241  Sidalcea malviflora John C. Roos 1965-7-18 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3268  Boerhavia coulteri John C. Roos 1950-9-3 4980 San Bernardino Valley Wells 1127 Comment
  CLARK-A1528-3283  Oxybaphus pumilus John C. Roos 1937-8-25 11 San Bernardino Mountain Pass Comment
  CLARK-A1528-3299  Epilobium exaltatum John C. Roos 1965-7-31 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3304  Ludwigia repens John C. Roos 1965-9-15 San Bernardino Victorville Comment
  CLARK-A1528-3309  Zauschneria californica John C. Roos 1965-9-11 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3338  Epilobium glaberrimum John C. Roos 1965-7-18 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3353  Zauschneria californica subsp. latifolia John C. Roos 1936-8-15 571 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3371  Clarkia rhomboidea John C. Roos 1947-6-14 3680 San Bernardino San Bernardino Mountains 1523 Comment
  CLARK-A1528-3376  Eburophyton austiniae John C. Roos 1934-5-15 613 San Bernardino Crestline Comment
  CLARK-A1528-3385  Habenaria sparsiflora John C. Roos 1965-9-11 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3406  Canbya candida John C. Roos, Lucille Roos 1952-5-10 5633 San Bernardino Mojave Desert Comment
  CLARK-A1528-3445  Navarretia atractyloides John C. Roos 1948-6-13 3878 San Bernardino Fontana Comment
  CLARK-A1528-3457  Allophyllum divaricatum John C. Roos 1965-6-12 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3478  Linanthus nuttallii John C. Roos 1937-7-20 2365 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3517  Gilia splendens subsp. splendens John C. Roos 1937-7-20 2366 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3568  Notholaena sinuata var. cochisensis John C. Roos 1949-5-29 3532 San Bernardino Clark Mountain 1462 Comment
  CLARK-A1528-3604  Chorizanthe rigida John C. Roos 1965-6-16 San Bernardino Comment
  CLARK-A1528-3609  Chorizanthe watsonii John C. Roos 1949-4-30 San Bernardino Hesperia Comment
  CLARK-A1528-3685  Eriogonum parishii John C. Roos 1940-8-10 1844 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-370  Stanleya pinnata subsp. pinnata John C. Roos 1971-4-26 San Bernardino Joshua Tree National Park 609 Comment
  CLARK-A1528-3714  Eriogonum umbellatum John C. Roos 1946-10-5 3117 San Bernardino San Bernardino Mountains 2133 Comment
  CLARK-A1528-3749  Nemacladus rubescens John C. Roos 1937-4-24 1797 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3761  Oxytheca perfoliata John C. Roos 1965-6-16 San Bernardino Comment
  CLARK-A1528-3786  Polygonum douglasii subsp. johnstonii John C. Roos 1937-7-20 2368 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3791  Polygonum punctatum John C. Roos 1937-8-23 1784 San Bernardino Snow Creek Comment
  CLARK-A1528-3807  Plantago hirtella John C. Roos 1938-6-5 472 San Bernardino Loma Linda Comment
  CLARK-A1528-3825  Lewisia brachycalyx John C. Roos 1939-5-26 715 San Bernardino San Bernardino Mountains 2285 Comment
  CLARK-A1528-3856  Delphinium cardinale John C. Roos 1947-5-11 3611 San Bernardino Fontana Comment
  CLARK-A1528-3879  Thalictrum fendleri John C. Roos 1937-7-22 2371 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3905  Rhamnus californica John C. Roos 1968-9-21 San Bernardino San Bernardino Mountains 1219 Comment
  CLARK-A1528-3950  Galium johnstonii John C. Roos 1965-7-17 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3964  Sherardia arvensis John C. Roos 1952-5-19 5684 San Bernardino Loma Linda Comment
  CLARK-A1528-3993  Geum macrophyllum John C. Roos 1937-7-21 2364 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3999  Horkelia bolanderi subsp. parryi John C. Roos 1937-7-21 Roos No. 2374 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4003  Horkelia wilderae John C. Roos 1965-6-26 San Bernardino San Bernardino Mountains 2133 Comment
  CLARK-A1528-4008  Cercocarpus intricatus John C. Roos 1948-9-18 4067 San Bernardino Clark Mountain Range 1706 Comment
  CLARK-A1528-402  Atriplex polycarpa John C. Roos 1951-9-15 5208 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-4039  Rosa californica John C. Roos 1965-7-18 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4042  Rubus leucodermis John C. Roos 1965-7-17 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4059  Salix scouleriana John C. Roos 1939-5-26 723 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4107  Lithophragma parviflorum John C. Roos 1965-6-26 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4110  Parnassia cirrata John C. Roos 1946-9-4 2972 San Bernardino San Bernardino Mountains 2438 Comment
  CLARK-A1528-4136  Ribes montigenum John C. Roos 1946-9-4 2949 San Bernardino San Gorgonio Peak 3413 Comment
  CLARK-A1528-4140  Ribes montigenum John C. Roos 1949-7-4 4536 San Bernardino San Bernardino Mountains 3498 Comment
  CLARK-A1528-4179  Castilleja foliolosa John C. Roos 1937-4-17 1384 San Bernardino Highland Comment
  CLARK-A1528-4182  Castilleja miniata John C. Roos 1940-7-16 1853 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4214  Limosella aquatica John C. Roos 1937-7-19 1160 San Bernardino San Bernardino Comment
  CLARK-A1528-4228  Mimulus rubellus John C. Roos 1949-5-29 4377 San Bernardino Clark Mountain 1676 Comment
  CLARK-A1528-4261  Mimulus palmeri John C. Roos 1937-5-24 2041 San Bernardino Deep Creek Comment
  CLARK-A1528-4291  Pedicularis semibarbata John C. Roos 1939-5-26 716 San Bernardino San Bernardino Mountains 2285 Comment
  CLARK-A1528-4297  Penstemon caesius John C. Roos 1937-7-22 1171 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4310  Penstemon labrosus John C. Roos 1965-7-17 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4325  Veronica americana John C. Roos 1936-8-15 577 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4336  Veronica persica John C. Roos 1947-2-8 3231 San Bernardino San Bernardino County Hospital Comment
  CLARK-A1528-4362  Physalis hederifolia var. cordifolia John C. Roos 1948-9-18 4070 San Bernardino Clark Mountain 1615 Comment
  CLARK-A1528-438  Euphorbia peplus John C. Roos 1951-9-17 5215 San Bernardino Loma Linda 323 Comment
  CLARK-A1528-4382  Celtis reticulata John C. Roos 1949-6-25 4493 San Bernardino Clark Mountain 1523 Comment
  CLARK-A1528-4422  Phoradendron macrophyllum John C. Roos 1965-12-11 San Bernardino San Bernardino Mountains 1097 Comment
  CLARK-A1528-4439  Tribulus terrestris John C. Roos 1951-9-21 5232 San Bernardino Loma Linda 323 Comment
  CLARK-A1528-4442  Agropyron parishii John C. Roos 1939-6-16 914 San Bernardino Crestline 1523 Comment
  CLARK-A1528-4460  Aristida adscensionis John C. Roos 1937-6-26 San Bernardino Redlands Comment
  CLARK-A1528-4476  Aristida parishii John C. Roos, Lucille Roos 1952-5-11 5655 San Bernardino Loma Linda 426 Comment
  CLARK-A1528-4514  Bouteloua curtipendula John C. Roos 1949-5-28 4364 San Bernardino Clark Mountain 1615-1646 Comment
  CLARK-A1528-4519  Bouteloua eriopoda John C. Roos 1949-6-23 4462 San Bernardino Hackberry Mountain 1310 Comment
  CLARK-A1528-4523  Bouteloua eriopoda John C. Roos 1937-8-25 436 San Bernardino New York Mountains Comment
  CLARK-A1528-4543  Bromus marginatus John C. Roos 1965-6-26 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4566  Bromus willdenowii John C. Roos 1950-6-9 4828 San Bernardino San Bernardino Comment
  CLARK-A1528-4581  Deschampsia danthonioides John C. Roos 1937-7-27 451 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4610  Elymus triticoides John C. Roos 1965-6-16 San Bernardino Victorville 914 Comment
  CLARK-A1528-4625  Erioneuron pilosum John C. Roos 1949-5-28 3537 San Bernardino Clark Mountain 1646-1829 Comment
  CLARK-A1528-4636  Eragrostis cilianensis John C. Roos 1940-8-22 1609 San Bernardino Loma Linda Comment
  CLARK-A1528-4657  Festuca megalura John C. Roos 1965-6-12 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4662  Festuca octoflora John C. Roos 1950-4-26 4765 San Bernardino Lucerne Valley 883 Comment
  CLARK-A1528-4679  Hilaria jamesii John C. Roos 1949-5-29 3538 San Bernardino Clark Mountain 1676 Comment
  CLARK-A1528-4682  Holcus lanatus John C. Roos 1950-6-11 4832 San Bernardino San Bernardino Valley 323 Comment
  CLARK-A1528-4721  Melica aristata John C. Roos 1941-7-19 116 San Bernardino San Bernardino Mountains 2224 Comment
  CLARK-A1528-4735  Melica stricta John C. Roos 1950-6-17 San Bernardino San Bernardino Mountains 2133 Comment
  CLARK-A1528-4747  Muhlenbergia asperifolia John C. Roos 1938-8-14 580 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4768  Oryzopsis bloomeri John C. Roos 1946-9-28 3090 San Bernardino San Bernardino Mountains 0 Comment
  CLARK-A1528-4783  Panicum capillare John C. Roos 1937-7-19 377 San Bernardino Santa Ana River Comment
  CLARK-A1528-4804  Phleum alpinum John C. Roos 1937-7-22 1173 San Bernardino South Fork Meadows Comment
  CLARK-A1528-4809  Phleum pratense John C. Roos 1937-7-31 968 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4822  Poa fendleriana John C. Roos 1965-6-26 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4833  Poa scabrella John C. Roos 1950-8-4 San Bernardino Clark Mountain Comment
  CLARK-A1528-4834  Poa scabrella John C. Roos 1939-5-26 713 San Bernardino Bluff Lake 2285 Comment
  CLARK-A1528-4858  Sanicula bipinnatifida John C. Roos 1937-4-17 1380 San Bernardino Redlands Comment
  CLARK-A1528-4871  Quercus wislizeni var. frutescens John C. Roos 1939-6-10 720 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-4876  Berberis nevinii John C. Roos 1937-2-27 476 San Bernardino San Timoteo Canyon Comment
  CLARK-A1528-4902  Astragalus layneae John C. Roos 1937-4-23 488 San Bernardino Twentynine Palms Comment
  CLARK-A1528-4952  Petradoria pumila subsp. pumila John C. Roos 1948-9-10 4066 San Bernardino Clark Mountain Comment
  CLARK-A1528-4961  Salvia mohavensis John C. Roos 1949-6-24 4476 San Bernardino Clark Mountain 1676 Comment
  CLARK-A1528-4967  Phyllodoce breweri John C. Roos 1941-6-5 109 San Bernardino Mount San Gorgonio 2895 Comment
  CLARK-A1528-5037  Sporobolus airoides John C. Roos 1946-9-21 3077 San Bernardino San Bernardino Mountains 1081 Comment
  CLARK-A1528-5045  Sporobolus cryptandrus John C. Roos 1950-8-5 4897 San Bernardino Clark Mountain Range 1706 Comment
  CLARK-A1528-5051  Sporobolus cryptandrus John C. Roos 1949-8-13 4619 San Bernardino New York Mountains 1828 Comment
  CLARK-A1528-5073  Astragalus tricarinatus John C. Roos 1941-4-5 187 San Bernardino Dry Morongo Canyon Comment
  CLARK-A1528-5078  Phacelia ramosissima John C. Roos 1947-5-10 3619 San Bernardino San Timoteo Canyon Comment
  CLARK-A1528-5153  Veronica persica John C. Roos 1947-3-21 3376 San Bernardino Loma Linda Comment
  CLARK-A1528-5165  Artemisia tridentata Alfred R. Roos 1948-10-29 San Bernardino Cajon Pass 1219 Comment
  CLARK-A1528-5190  Sherardia arvensis John C. Roos 1948-4-21 3776 San Bernardino Loma Linda Comment
  CLARK-A1528-5211  Heteromeles arbutifolia John C. Roos 1965-12-11 San Bernardino San Bernardino Mountains 1097 Comment
  CLARK-A1528-5263  Stipa occidentalis John C. Roos 1946-9-15 3032 San Bernardino San Bernardino Mountains 2956 Comment
  CLARK-A1528-5322  Haplopappus laricifolius John C. Roos 1950-9-1 4956 San Bernardino Clark Mountains 1615 Comment
  CLARK-A1528-5358  Ambrosia confertiflora John C. Roos 1949-10-12 4691 San Bernardino Loma Linda Comment
  CLARK-A1528-5365  Fraxinus anomala John C. Roos 1948-9-18 San Bernardino Clark Mountain Comment
  CLARK-A1528-54  Echinochloa colona John C. Roos 1965-9-14 5202 San Bernardino Loma Linda 323 Comment
  CLARK-A1528-5406  Euphorbia palmeri John C. Roos 1965-6-26 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-5415  Chenopodium pumilio John C. Roos 1965-7-4 San Bernardino Loma Linda Comment
  CLARK-A1528-5431  Gentiana amarella John C. Roos 1946-9-4 2971 San Bernardino San Bernardino Mountains 2438 Comment
  CLARK-A1528-5517  Encelia californica John C. Roos 1965-6-20 San Bernardino Ontario Comment
  CLARK-A1528-5535  Setaria verticillata John C. Roos 1965-8-5 San Bernardino Loma Linda Comment
  CLARK-A1528-5541  Sorghum halepense Alfred R. Roos 1938-2-13 San Bernardino Loma Linda Comment
  CLARK-A1528-5588  Poa nevadensis John C. Roos 1937-7-28 1951 San Bernardino San Bernardino Mountains 2194 Comment
  CLARK-A1528-5594  Muilla maritima John C. Roos 1937-6-25 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-5598  Rhus integrifolia John C. Roos 1950-2-25 4709 San Bernardino Santa Ana River 396 Comment
  CLARK-A1528-5609  Helianthus gracilentus John C. Roos 1937-5-10 San Bernardino Crafton Hills near Redlands; Yucaipa 7.5'Q Comment
  CLARK-A1528-5653  Atriplex confertifolia John C. Roos 1937-3-1 San Bernardino Victorville Comment
  CLARK-A1528-5659  Lactuca serriola f. integrifolia John C. Roos 1938-8-19 584 San Bernardino Loma Linda Comment
  CLARK-A1528-5677  Quercus wislizeni var. frutescens John C. Roos 1968-9-21 San Bernardino San Bernardino Mountains 1219 Comment
  CLARK-A1528-5685  Hesperochiron californicus John C. Roos 1949-4-30 4269 San Bernardino Lucerne Valley 883 Comment
  CLARK-A1528-5718  Eriogonum racemosum John C. Roos, R. Weatherby 1949-9-2 4640 San Bernardino Kingston Mountains 2096 Comment
  CLARK-A1528-5732  Castilleja affinis John C. Roos 1943-4-11 2605 San Bernardino Norton Air Force Base Comment
  CLARK-A1528-5744  Veronica persica John C. Roos 1943-4-1 2624 San Bernardino San Bernardino County Hospital Comment
  CLARK-A1528-5810  Habenaria leucostachys John C. Roos 1967-7-8 San Bernardino San Bernardino Mountains 2499 Comment
  CLARK-A1528-693  Plantago hirtella subsp. galeottiana John C. Roos, Lucille Roos 1951-9-29 5309 San Bernardino San Bernardino 304 Comment
  CLARK-A1528-7757  Horkelia californica John C. Roos 1937-7-31 8 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-7773  Veronica americana John C. Roos 1949-6-28 4525 San Bernardino Kingston Range 1371 Comment
  CLARK-A1528-7778  Asclepias californica John C. Roos 1965-7-24 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-7802  Eragrostis mexicana John C. Roos 1950-5-16 4811 San Bernardino Highland 457 Comment
  CLARK-A1528-7829  Poa secunda John C. Roos 1950-5-13 4808 San Bernardino Lucerne Valley 883 Comment
  CLARK-A1528-7843  Machaeranthera arida John C. Roos 1949-6-26 3561 San Bernardino Mesquite Valley 792 Comment
  CLARK-A1528-7867  Aristida purpurea var. nealleyi John C. Roos, Lucille Roos 1950-10-21 5012 San Bernardino Little San Bernardino Mountains 1219 Comment
  CLARK-A1528-7875  Festuca californica John C. Roos 1951-6-9 5061 San Bernardino San Bernardino Mountains 1767 Comment
  CLARK-A1528-82  Paspalum dilatatum John C. Roos 1951-9-20 5231 San Bernardino Loma Linda 335 Comment
  HSC78531  Atriplex truncata A. R. Roos 1950-8-8 San Bernardino Rabbit Springs, Lucerne Valley, S Mojave Desert. 915 Comment
  LA102187  Distichlis spicata John C. Roos; 1949-5-14 4309 San Bernardino Lucerne Valley, Rabbit Springs 883 Comment
  LA102205  Puccinellia parishii John C. Roos; 1950-4-26 4767 San Bernardino Rabbit Springs 883 Comment
  LA102304  Populus tremuloides J. C. Roos; 1965-6-26 sn San Bernardino San Bernardino Mountains, Fish Creek, near Barton Flats Comment
  LA206376  Eriochloa acuminata var. acuminata John C. Roos; 1950-8-22 4945 San Bernardino San Bernandino Valley, Highland 457 Comment
  NY802603  Pediomelum castoreum J. C. Roos 1952-5-10 5642 San Bernardino 4 miles northwest of Adelanto, near Red Haven Mine 823 Comment
  POM251753  Boerhavia intermedia J. C. Roos 1937-8-25 13 San Bernardino Mountain Pass, Ivanpah Mts., eastern San Bernardino Co. Comment
  POM25676  Ribes quercetorum J. C. Roos 1940-5-4 879 San Bernardino Reche Canyon, San Bernardino Valley. Comment
  POM261394  Cryptogramma acrostichoides J. C. Roos 1941-6-5 113 San Bernardino San Bernardino Mountains: Above Dollar Lake. 2896 Comment
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Mar 4 2008
  POM261405  Antennaria dimorpha J. C. Roos 1941-5-30 105 San Bernardino Big Meadows. upper Santa Ana River. Comment
  POM262869  Pseudognaphalium biolettii J. C. Roos 1941-2-1 227 San Bernardino Rocky mountain south of Reche Canyon Comment
  POM262875  Lupinus truncatus J. C. Roos 1941-3-8 215 San Bernardino San Timoteo Canyon, near Redlands. Comment
  POM262884  Potentilla glandulosa subsp. nevadensis J. C. Roos 1937-7-22 539 San Bernardino Near South Fork Santa Ana River, San Bernardino Mountains 2287 Comment
Read comments
May 20 2009
  POM262904  Malaxis brachypoda J. C. Roos 1937-7-22 329 San Bernardino South Fork, Santa Ana River 2439 Comment
  POM262909  Castanopsis sempervirens J. C. Roos 1936-7-30 696 San Bernardino High Creek, San Bernardino Mts. 2591 Comment
  POM262929  Arenaria lanuginosa subsp. saxosa J. C. Roos 1937-7-20 380 San Bernardino Along Lost Creek, San Bernardino Mountains. 1981 Comment
  POM262955  Pterostegia drymarioides J. C. Roos 1941-5-6 150 San Bernardino Hills at Loma Linda. Comment
  POM262961  Salix exigua J. C. Roos 1937-4-27 619 San Bernardino Colorado River bottom lands, Needles. Comment
  POM262962  Salix scouleriana J. C. Roos 1939-5-26 723 San Bernardino Bluff Lake. Comment
  POM262970  Lupinus densiflorus var. lacteus J. C. Roos 1941-4-19 164 San Bernardino Near Loma Linda, San Bernadino Co. Comment
  POM263020  Suaeda moquinii J. C. Roos 1937-7-7 393 San Bernardino San Bernardino. Comment
  POM263035  Eriogonum kennedyi var. austromontanum J. C. Roos 1937-7-26 346 San Bernardino Bear Valley, San Bernardino Mountains. Comment
  POM263045  Deschampsia danthonioides J. C. Roos 1937-7-27 451 San Bernardino Bear Valley, Boulder Bay, San Bernardino Mountains. Comment
  POM263047  Polygonum amphibium var. stipulaceum J. C. Roos 1937-7-22 506 San Bernardino Dry lake, in the water, San Bernardino Mtns. 2744 Comment
  POM263051  Lupinus concinnus subsp. optatus J. C. Roos 1937-5-15 686 San Bernardino Crestline, San Bernardino Mts. Comment
  POM263052  Eriogonum pusillum J. C. Roos 1941-4-5 197 San Bernardino Dry Morongo Canyon, Colorado Desert. Comment
  POM263074  Galium johnstonii J. C. Roos 1937-7-20 485 San Bernardino Camp Angelus, San Bernardino Mountains. Comment
  POM263087  Agrostis scabra J. C. Roos 1937-7-23 411 San Bernardino Big Meadows, Upper Santa Ana River, San Bernardino Mountains. 2073 Comment
  POM263094  Galium hallii J. C. Roos 1937-7-15 384 San Bernardino Stockton Flats, San Gabriel Mountains. Comment
  POM263099  Athysanus pusillus J. C. Roos 1941-3-8 208 San Bernardino Reche Canyon, San Bernardino Valley. Comment
  POM263108  Conyza canadensis J. C. Roos 1940-9-14 227 San Bernardino Loma Linda, San Bernardino Valley Comment
  POM263128  Delphinium parishii J. C. Roos 1937-4-23 541 San Bernardino Desert slope west of 29 Palms, Colorado Desert. Comment
  POM263139  Veronica americana J. C. Roos 1936-8-15 577 San Bernardino Upper Santa Ana Canyon. 1982 Comment
  POM263189  Agrostis scabra J. C. Roos 1937-7-25 410 San Bernardino Clark's Grade, San Bernardino Mountains. Comment
  POM263193  Achnatherum nelsonii subsp. dorei J. C. Roos 1937-7-26 337 San Bernardino Bear Valley, Pine Knot, San Bernardino Mts. Comment
  POM263274  Euphorbia peplus J. C. Roos 1937-6-26 625 San Bernardino Smiley Park, Redlands Comment
  POM263355  Leucopoa kingii J. C. Roos 1937-7-22 408 San Bernardino South Fork Santa Ana River, San Bernardino Mountains Comment
  POM263493  Elatine brachysperma J. C. Roos 1937-7-28 325 San Bernardino Bluff Lake, San Bernardino Mountains. Comment
  POM263551  Phacelia pedicellata J. C. Roos 1937-4-27 677 San Bernardino 20 miles south of Needles. Comment
  POM264149  Juncus bufonius J. C. Roos 1937-7-14 621 San Bernardino Near San Bernardino. Comment
  POM265643  Claytonia parviflora subsp. tenuifolia J. C. Roos 1937-6-5 1474 San Bernardino Crestline Comment
  POM265811  Elatine californica J. C. Roos 1937-7-27 1673 San Bernardino Boulder Bay, Bear Lake, San Bernardino Mts. Comment
  POM266332  Glyceria striata J. C. Roos 1940-8-3 1584 San Bernardino South of Pine Knot, Bear Valley. Comment
  POM266341  Poa howellii J. C. Roos 1939-6-24 918 San Bernardino Sawpit Canyon, near Cedar Spring, San Bernardino Mts. Comment
  POM274188  Ranunculus cymbalaria var. saximontanus J. C. Roos 1946-8-29 2771 San Bernardino Eagle Point, Bear Valley. 2043 Comment
  POM301529  Limosella acaulis J. C. Roos 1937-7-19 1160 San Bernardino South of San Bernardino Comment
  POM301532  Arctostaphylos pungens J. C. Roos 1942-4-25 1109 San Bernardino Cedar Springs, north side of San Bernardino Mts. 1067 Comment
  POM302486  Epilobium ciliatum subsp. glandulosum J. C. Roos 1943-7-31 2694 San Bernardino Kuffle Canyon, near Lake Arrowhead. San Bernardino Mountains. 1677 Comment
  POM302491  Fremontodendron californicum J. C. Roos 1943-7-4 2712 San Bernardino Greenspot, north base of Sugarloaf Mountains Comment
  POM302492  Euphorbia peplus J. C. Roos 1943-3-30 2623 San Bernardino County hospital, San Bernardino. Comment
  POM302498  Diplotaxis muralis J. C. Roos 1943-4-11 2603 San Bernardino County Hospital. Comment
  POM302509  Oxytheca trilobata J. C. Roos 1943-5-23 2672 San Bernardino Little San Bernardino Mountains. 1524 Comment
  POM302511  Quercus X morehus J. C. Roos 1943-2-28 2591 San Bernardino Near north foot of Grayback trail, Barton Flats, San Bernardino Mts. 2073 Comment
  POM302512  Muhlenbergia andina J. C. Roos 1943-8-14 2706 San Bernardino Along Vivian Creek 2226 Comment
  POM302518  Acourtia microcephala J. C. Roos 1943-7-15 2734 San Bernardino San Timoteo Canyon, south of Redlands Comment
  POM302524  Plantago subnuda J. C. Roos 1943-7-31 2686 San Bernardino Along irrigation ditch, between San Bernardino and Loma Linda Comment
  POM302568  Arctostaphylos glauca J. C. Roos 1943-5-23 2654 San Bernardino Little San Bernardino Mountains. 1524 Comment
  POM431204  Muhlenbergia californica J. C. Roos 1962-9-29 s.n. San Bernardino Mill Creek 2043 Comment
  POM444679  Helianthus petiolaris J. C. Roos 1965-6-20 s.n. San Bernardino Ontario: Vineyard Comment
  RSA265723  Eriogonum elongatum var. elongatum J. C. Roos 1937-10-30 2260 San Bernardino San Gabriel Mountains: junction of two forks of Lytle Creek. Comment
  RSA309655  Galium angustifolium subsp. gabrielense J. C. Roos 1967-7-15 s.n. San Bernardino Ridge between south and north fork of Mission Creek 2591 Comment
  RSA393357  Eriogonum fasciculatum var. polifolium A. R. Roos 1922-11-8 s.n. San Bernardino Near Loma Linda 915 Comment
  RSA40556  Achnatherum occidentale subsp. occidentale J. C. Roos 1946-9-4 3041 San Bernardino Rocky slopes W of Dollar Lake, San Bernardino Mts 2927 Comment
  RSA40558  X Stiporyzopsis bloomeri J. C. Roos 1946-9-28 3090 San Bernardino Fish Creek, San Bernardino Mts. 2195 Comment
  RSA41286  Poa atropurpurea J. C. Roos 1939-5-26 714 San Bernardino Bluff Lake, San Bernardino Mountains 2287 Comment
  RSA425018  Phacelia ramosissima var. latifolia J. C. Roos 1965-6-27 s.n. San Bernardino Loma Linda Hills. 305 Comment
  RSA425029  Machaeranthera carnosa J. C. Roos 1956-8-2 6591 San Bernardino San Bernardino Valley [Loma Linda] north side of Hwy 99, 0.2 miles west of Waterman Ave. Comment
  RSA44233  Machaeranthera arida J. C. Roos 1949-6-26 3561 San Bernardino Mesquite Valley, 2 mi S of Kingston 793 Comment
  RSA44238  Penstemon eatonii subsp. undosus J. C. Roos 1949-5-29 3527 San Bernardino Edge of rocky was, north slope of Clark Mountain 1646 Comment
  RSA44242  Penstemon eatonii J. C. Roos 1949-6-24 3530 San Bernardino Rocky ridge, on ledge near summit of Clark Mt. 2378 Comment
  RSA44260  Piptatherum micranthum J. C. Roos 1949-6-24 3543 San Bernardino canyon bottom, north slope of Clark Mountain, eastern Mojave Desert 1982 Comment
  RSA443401  Phleum alpinum J. C. Roos 1965-7-31 s.n. San Bernardino South Fork, San Bernardino Mountains. 2287 Comment
  RSA443543  Chorizanthe brevicornu J. C. Roos 1965-6-16 s.n. San Bernardino 4 miles N of Adelanto. Comment
  RSA444477  Chamaesyce supina J. C. Roos 1965-7-28 s.n. San Bernardino Loma Linda: Garden in Loma Linda Comment
  RSA444673  Salpichroa origanifolia J. C. Roos 1965-6-29 s.n. San Bernardino Bloomington. Comment
  RSA444792  Prunus virginiana var. demissa J. C. Roos, L. Roos 1956-5-26 6581 San Bernardino Oakland Glen School. Comment
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Nov 26 2014
  RSA444798  Purshia stansburyana J. C. Roos 1950-8-4 s.n. San Bernardino N side of Clark Mountain, east Mojave Desert. Comment
  RSA44925  Collinsia childii J. C. Roos 1947-6-14 3679 San Bernardino in canyon behind Bowl, Crestline. 1524 Comment
  RSA449942  Moluccella laevis J. C. Roos 1965-6-20 s.n. San Bernardino Lawn in Loma Linda. Comment
  RSA449953  Clarkia purpurea subsp. quadrivulnera J. C. Roos 1965-6-12 s.n. San Bernardino Igo's near Mountain Home Village and Mill Creek. San Bernardino Mountains. [Note: Igo s is present location of Mountain Home Village, Hwy. 38, San Bernardino Mtns. -SDW 2006] Comment
  RSA450082  Calochortus invenustus J. C. Roos 1965-7-18 s.n. San Bernardino Bear Valley, San Bernardino Mountains. Comment
  RSA450096  Ceanothus crassifolius J. C. Roos 1966-3-31 s.n. San Bernardino In the hills of San Timoteo Canyon, near Redlands Blvd. 305 Comment
  RSA450116  Lupinus lepidus var. confertus J. C. Roos 1965-7-18 s.n. San Bernardino Along Bear Valley, San Bernardino Mtns. Comment
  RSA450125  Mahonia nevinii J. C. Roos 1966-2-10 s.n. San Bernardino San Timoteo Canyon, south of Redlands. Comment
  RSA450127  Apocynum androsaemifolium subsp. pumilum J. C. Roos 1965-7-17 s.n. San Bernardino Stetson Creek, Barton Flats, San Bernardino Mountains. Comment
  RSA450134A  Lupinus excubitus var. austromontanus J. C. Roos 1947-2-22 3290 San Bernardino Deep Creek, San Bernardino Mtns Comment
  RSA450154  Rumex salicifolius var. denticulatus J. C. Roos 1965-7-17 s.n. San Bernardino Dry Lake, San Bernardino Mtns. Comment
  RSA450204  Frankenia grandifolia J. C. Roos 1950-6-24 4843 San Bernardino Rabbit Springs, Mojave Desert Comment
  RSA450257  Horkelia rydbergii J. C. Roos 1965-7-18 s.n. San Bernardino Snow Valley, San Bernardino Mountains. Comment
  RSA450317  Dalea mollis J. C. Roos 1965-10-17 s.n San Bernardino W of Blythe: 20 miles W on desert. Comment
  RSA450423  Erigeron divergens J. C. Roos 1965-6-26 s.n. San Bernardino San Bernardino Mountains probably near Barton Flats. Comment
  RSA450436  Juniperus occidentalis var. australis J. C. Roos 1965-6-26 s.n. San Bernardino Upper Santa Ana Basin, near Fish Creek. San Bernardino Mtns. Comment
  RSA450472  Trichostema parishii J. C. Roos 1965-6-6 s.n. San Bernardino Mill Creek. San Bernardino Mountains. Comment
  RSA450486  Gnaphalium chilense J. C. Roos 1965-7-18 s.n. San Bernardino Bear Valley, San Bernardino Mtns. Comment
  RSA450492  Hemizonia fasciculata J. C. Roos 1965-6-27 s.n. San Bernardino Loma Linda Hills. 305 Comment
  RSA450744  Lepidospartum squamatum J. C. Roos 1965-10-2 s.n. San Bernardino Mill Creek 976 Comment
  RSA45207  Arabis pulchra J. C. Roos, L. Roos 1949-4-30 4260 San Bernardino 6 miles SW of Hesperia. 1067 Comment
  RSA45209  Chorizanthe watsonii J. C. Roos, Lucille Roos 1949-4-30 4273 San Bernardino 4 miles west of Hesperia. Comment
  RSA45214  Calochortus striatus J. C. Roos, L. Roos 1949-5-14 4290 San Bernardino Rabbit Springs, Mojave Desert. 884 Comment
  RSA45216  Tetradymia stenolepis J. C. Roos, Lucille Roos 1949-5-14 4296 San Bernardino Near Rock Corral, north base San Bernardino Mts. 1098 Comment
  RSA45218  Penstemon incertus J. C. Roos, L. Roos 1949-5-14 4299 San Bernardino 5 miles west of The Windmill; Burns-Pipes Wash, east end San Bernardino Mts. 1220 Comment
  RSA45476  Artemisia bigelovii L. Roos 1948-9-18 4059 San Bernardino in steep limestone gulch, N slope, Clark Mts. 1829 Comment
  RSA45483  Helianthus annuus subsp. jaegeri J. C. Roos, L. Roos 1948-9-19 4039 San Bernardino Soda Springs, W. side Soda Lake. Comment
  RSA45484  Cressa truxillensis J. C. Roos, Lucille Roos, A. R. Roos 1948-9-10 4038 San Bernardino Soda Springs, west side of Soda Lake, Mojave Desert. Comment
  RSA45505  Machaeranthera asteroides J. C. Roos 1949-4-9 4215 San Bernardino 5 mi NE of Earp along the Colorado River. Comment
  RSA45540  Ericameria cuneata var. spathulata J. C. Roos, L. Roos 1948-9-25 4076 San Bernardino Arrowhead Highlands 1524 Comment
  RSA45542  Menodora scoparia J. C. Roos 1948-9-18 4068 San Bernardino N slopes Clark Mts, S og Green s Mine 1677 Comment
  RSA47197  Mimulus tilingii J. C. Roos 1949-7-4 4540 San Bernardino Along stream at High Creek. 2744 Comment
  RSA47199  Salvia pachyphylla subsp. pachyphylla J. C. Roos, L. Roos 1949-6-27 4507 San Bernardino Kingston Mtns, on high ridge. 2134 Comment
  RSA47315  Arabis platysperma J. C. Roos 1949-7-23 4576 San Bernardino Canyon above Moonridge Ski Area, Bear Valley, San Bernardino Mts. 2348 Comment
  RSA47320  Agave utahensis var. nevadensis J. C. Roos, L. Roos 1949-6-28 4522 San Bernardino Kingston Mountains, (Tecopa Pass) 1524 Comment
  RSA47322  Aristida purpurea var. fendleriana J. C. Roos, L. Roos 1949-6-22 4443 San Bernardino Barnwell, New York Mountains 1463 Comment
  RSA47415  Cryptantha gracilis J. C. Roos 1949-6-19 4397 San Bernardino Southeastern base Clark Mtn. 1921 Comment
  RSA47420  Galium parishii J. C. Roos, L. Roos 1949-6-27 4514 San Bernardino North slope Kingston Mts. 1982 Comment
  RSA47445  Langloisia setosissima subsp. punctata J. C. Roos, L. Roos 1949-5-28 4355 San Bernardino North slope of Clark Mt. 1646 Comment
  RSA47465  Erigeron breweri var. covillei J. C. Roos, L. Roos 1949-6-23 4467 San Bernardino Near Rock Springs, Mid-hills, New York Mountains. 1463 Comment
  RSA47471  Hymenoxys acaulis var. arizonica J. C. Roos 1949-5-28 4348 San Bernardino N slope Clark, Mts 1829 Comment
  RSA47473  Erigeron uncialis J. C. Roos 1949-5-28 4361 San Bernardino Clark Mountain. 1890 Comment
  RSA47474  Machaeranthera gracilis J. C. Roos, L. Roos 1949-6-18 4393 San Bernardino Mountain Pass, Clark Mountains 1524 Comment
  RSA47476  Hymenoxys cooperi J. C. Roos, L. Roos 1949-6-20 4418 San Bernardino Keystone Canyon, New York Mts 1829 Comment
  RSA47478  Psilostrophe cooperi J. C. Roos, Lucille Roos 1949-6-22 4457 San Bernardino Lecyr Well, New York Mountains. 1524 Comment
  RSA47536  Forsellesia nevadensis J. C. Roos, L. Roos 1949-6-22 4451 San Bernardino New York Mtns, Keystone Canyon. 1829 Comment
  RSA47540  Amelanchier utahensis subsp. covillei J. C. Roos 1949-5-28 4349 San Bernardino North slope of Clark Mountains 1890 Comment
  RSA48683  Eriogonum wrightii var. wrightii J. C. Roos 1949-8-13 4610 San Bernardino Copper Queen Mine, Keystone Canyon, New York Mtns. 1829 Comment
  RSA48684  Ericameria cuneata var. spathulata J. C. Roos, L. Roos 1949-8-13 4609 San Bernardino Copper Queen Mine, Keystone Canyon, New York Mtns. 1829 Comment
  RSA48688  Gutierrezia sarothrae J. C. Roos 1949-8-13 4605 San Bernardino Copper Queen Mine, Keystone Canyon, New York Mtns. 1829 Comment
  RSA48841  Eriogonum wrightii var. wrightii J. C. Roos 1949-9-2 4647 San Bernardino Kingston Mountain; NE of Kingston Peak 2134 Comment
  RSA48843  Cirsium nidulum J. C. Roos 1949-8-13 4615 San Bernardino Near Springs and along rocky canyon bottom, Keystone Canyon, New York Mts 1707 Comment
  RSA48846  Nolina parryi J. C. Roos, L. Roos 1949-6-27 4502 San Bernardino North side Kingston Mountains 1829 Comment
  RSA48863  Aster subulatus var. ligulatus J. C. Roos 1949-9-25 4668 San Bernardino Shops buildings, Loma Linda 320 Comment
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May 21 2011
  RSA48875  Brickellia californica J. C. Roos 1949-9-3 4649 San Bernardino Tecopa Pass, Kingston Mountains. 1524 Comment
  RSA52775  Chrysothamnus nauseosus subsp. hololeucus J. C. Roos 1950-9-3 4972 San Bernardino Clark Mtn, south slope. 1890 Comment
  RSA592428  Atriplex canescens J. C. Roos 1965-7-21 s.n. San Bernardino Victorville Comment
  RSA592489  Sedum niveum J. C. Roos 1965-7-31 s.n. San Bernardino South fork. 2134 Comment
  RSA594031  Helianthus annuus subsp. lenticularis J. C. Roos 1965-10-3 s.n. San Bernardino Loma Linda Comment
  RSA61545  Poa secunda J. C. Roos 1950-5-13 4808 San Bernardino Lucerne Valley, Rabbit Springs. Alt 2900ft 884 Comment
  RSA648738  Forsellesia nevadensis J. C. Roos 1949-6-19 4402 San Bernardino southeastern base of Clark Mts, eastern San Bernardino Co. 1950 Comment
  RSA658343  Arceuthobium divaricatum J. C. Roos 1949-9-2 4635 San Bernardino Kingston Mtns Comment
  RSA658423  Sporobolus cryptandrus J. C. Roos 1965-6-7 s.n. San Bernardino Victorville. Comment
  RSA659191  Myriophyllum sibiricum J. C. Roos 1966-9-9 s.n. San Bernardino In Big Bear Lake, San Bernardino Mtns. Comment
  RSA659492  Euphorbia maculata J. C. Roos, L. Roos 1951-7-28 s.n. San Bernardino Hwy 99, near Alabama St. west of Redlands, San Bernardino Valley. 366 Comment
  RSA659719  Tetradymia comosa J. C. Roos 1965-6-27 s.n. San Bernardino Loma Linda Hills. 305 Comment
  RSA659784  Lotus argyraeus var. multicaulis J. C. Roos 1949-6-21 3556 San Bernardino New York Mountain (New York Peak) 2225 Comment
  RSA662420  Leucopoa kingii J. C. Roos 1937-7-7 408 San Bernardino South Fork (of Santa Ana River). San Bernardino Mtns. 1829 Comment
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Oct 26 2013
  RSA662433  Poa pratensis J. C. Roos 1965-7-18 s.n. San Bernardino Moonridge, Bear Valley, San Bernardino Mountains. Comment
  RSA662437  Atriplex polycarpa J. C. Roos 1965-7-6 1965 San Bernardino At the cement plant, Victorville. Comment
  RSA664196  Atriplex confertifolia J. C. Roos 1965-7-6 s.n. San Bernardino At the cement plant, Victorville. Comment
  RSA69863  Polygonum lapathifolium J. C. Roos, Lucille Roos 1951-9-11 5200 San Bernardino Loma Linda. 320 Comment
  RSA69864  Polygonum punctatum J. C. Roos, Lucille Roos 1951-9-11 5201 San Bernardino Loma Linda. 320 Comment
  RSA69868  Amaranthus fimbriatus J. C. Roos 1951-9-19 5222 San Bernardino In irrigated orhard with Amaranthus Palmeri, Tribulus terrestris, Loma Linda Comment
  RSA78234  Eriogonum heermannii var. heermannii J. C. Roos 1951-7-30 5078 San Bernardino Sheep Creek, NE of Wrightwood. 1585 Comment
  RSA78328  Plagiobothrys torreyi J. C. Roos 1951-6-9 5062 San Bernardino Running Springs 1829 Comment
  RSA78370  Imperata brevifolia J. C. Roos 1950-1-20 5031 San Bernardino Arrowhead Hot Springs 610 Comment
  RSA78382  Chrysothamnus viscidiflorus subsp. viscidiflorus J. C. Roos 1951-7-28 5070 San Bernardino Head of Rathbone Creek. 2591 Comment
  RSA85167  Monolepis nuttalliana J. C. Roos, L. Roos 1954-3-25 6047 San Bernardino The Pinnacles, 10 miles south of Trona, Mojave Desert. 549 Comment
  RSA85679  Muhlenbergia porteri J. C. Roos, A. R. Roos 1950-8-5 4907 San Bernardino East end of Kingston Mountains 1067 Comment
  RSA86874  Frasera albomarginata J. C. Roos 1950-9-2 4967 San Bernardino Clark Mountains, 1 mile south of coliseum Mine 1707 Comment
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Sep 5 2013
  RSA86878  Chenopodium incanum J. C. Roos 1950-9-1 4960 San Bernardino Vicinity of Coliseum Mine, Clark Mountains 1646 Comment
  RSA86881  Allionia incarnata J. C. Roos 1950-9-1 4953 San Bernardino North slopes Clark Mts., eastern Mohave Desert 1280 Comment
  RSA89973  Chrysothamnus nauseosus subsp. consimilis J. C. Roos 1950-10-11 5002 San Bernardino Cajon Pass 1 mile N of Cajon 976 Comment
  RSA89974  Chrysothamnus nauseosus subsp. consimilis J. C. Roos 1950-10-11 5001 San Bernardino Cajon Pass at Cajon 915 Comment
  RSA89976  Ericameria palmeri var. pachylepis J. C. Roos, L. Roos 1950-10-7 498 San Bernardino West end of Palm Ave., at foot of hills, 2 mi. S of Colton. 305 Comment
  RSA89984  Amaranthus fimbriatus J. C. Roos 1950-9-3 4981 San Bernardino Valley Wells 1128 Comment
  RSA89986  Hedeoma nana subsp. californica J. C. Roos 1950-9-3 4977 San Bernardino South of Clark Mountains, NW of Mountain Pass 1829 Comment
  SBBG28470  Berberis nevinii J. C. Roos 1949-3-6 3525 San Bernardino branch of San Timoteo Cyn, S of Redlands 426 Comment
  SBBG53853  Lepidium didymum J. C. Roos 1953-4-16 5913 San Bernardino Loma Linda, San Bernardino Valley 320 Comment
  SD122694  Coronopus didymus John C. Roos 1953-4-16 5913 San Bernardino Loma Linda, San Bernardino Valley. 320 Comment
  SEINET226237  Artemisia tridentata subsp. tridentata A. R. Roos 1950-8-6 San Bernardino East Mohave Desert; North side of the Kingston Range, pass on the road to Tecopa and the slopes above 1524 Comment
  SEINET227611 Image available Eragrostis mexicana J. C. Roos 1951-1 5221 San Bernardino West Barton Ave. in Loma Linda. At intersection with San Bernardino St. 335 Comment
  SEINET3885354  Calochortus invenustus J. C. Roos 1965-7-18 s.n. San Bernardino Bear Valley, San Bernardino Mtns.; 0 Comment
  SEINET6328885  Eriogonum baileyi J. C. Roos 1965-10-17 s.n. San Bernardino Phelan Road, south of Victorville Comment
  SEINET956212  Phlox condensata J. C. Roos 1949-1 4580 San Bernardino Holcomb Valley, San Bernardino Mountains. 2195 Comment
  UC1010212  Quercus palmeri John C. Roos 1947-3-8 3306 San Bernardino s edge Mojave Desert (at Deep Creek Public Camp, n base of San Bernardino Mts.); San Bernardino Mts., Mojave Desert 914 Comment
  UC1010218  Quercus turbinella John and Lucille Roos 1949-6-22 4452 San Bernardino Keystone Canyon New York Mts. 1737 Comment
  UC1010224  Helianthus ciliaris John C. Roos 1947-6-20 3684 San Bernardino in deserted grain field along Richardson Street near the Zanja; San Bernardino Valley, Victoria 304 Comment
  UC1010268  Ericameria nauseosa var. hololeuca John C. Roos 1950-9-3 4972 San Bernardino nw of Mountain Pass (canyon on s slope of Clark Mtn., e Mohave Desert); Mohave Desert, Clark Mtn. 1889 Comment
  UC1010290  Acer glabrum var. diffusum J. C. and A. R. Roos 1950-8-6 4915 San Bernardino Kingston Peak eastern Mohave Desert, , Kingston Peak (Kingston Mts.) 2164 Comment
  UC1010306  Artemisia bigelovii John C. Roos 1950-9-3 4973 San Bernardino nw of Mountain Pass (canyon on s side of Clark Mtn.); eastern Mohave Desert, Clark Mtn. 1828 Comment
  UC1010315  Ericameria palmeri var. pachylepis John and Lucille Roos 1950-10-7 4998 San Bernardino w end Palm Avenue (at foot of hills, 2 mi s of Colton) 304 Comment
  UC1010320  Boerhavia wrightii John and Lucille Roos 1950-10-21 5018 San Bernardino Mohave Desert, Twenty-nine Palms 579 Comment
  UC1023392  Digitaria ischaemum John C. Roos 1952-9-25 5898 San Bernardino San Bernardino Valley Loma Linda; , Loma Linda 320 Comment
  UC1023413  Achnatherum parishii J. C. and A. R. Roos 1950-8-5 4895 San Bernardino 1 1/2 mi sw on n slope of Clark Mtn. Coliseum Mine; eastern Mohave Desert, Clark Mtn. 1737 Comment
  UC1023415  Sporobolus cryptandrus J. C. and A. R. Roos 1950-8-6 4909 San Bernardino between Horse Spring and Beck's Spring (Tecopa Pass); Kingston Mts., Tecopa Pass 1524 Comment
  UC1023417  Sporobolus cryptandrus John C. Roos 1950-8-12 4932 San Bernardino Mill Creek near junction of Vivian Creek; San Bernardino Mts., Mill Creek 1828 Comment
  UC1023426  Portulaca halimoides John C. Roos 1950-9-1 4951 San Bernardino Valley Wells Eastern Mohave Desert 1127 Comment
  UC1023433  Hydrocotyle umbellata John C. Roos 1950-9-22 4990 San Bernardino Loma Linda San Bernardino Valley, Loma Linda 335 Comment
  UC1042974  Galinsoga parviflora var. parviflora John C. Roos 1954-5-11 6116 San Bernardino corner of Central and Anderson; Loma Linda 320 Comment
  UC1043011  Amaranthus powellii John C. Roos 1954-11-21 6257 San Bernardino Loma Linda 335 Comment
  UC1234680  Horkelia wilderae J. C. Roos 1955-8-20 6505 San Bernardino Barton Flats near Barton Creek; San Bernardino Mountains, Barton Flats near Barton Creek 1889 Comment
  UC1494262  Celtis reticulata J. C. Roos 1962-5-7 San Bernardino 9.3 mi w of corner of Bryant St. and Oak Glen Road (Yucaipa); Yucaipa 822 Comment
  UC1494270  Ambrosia monogyra J. C. Roos 1947-5-11 3608 San Bernardino n of Rialto (Fontana Power Station) Comment
  UCD117866  Gilia ochroleuca John Roos; Lucille Roos 1952-5-17 5676 San Bernardino 8 miles west of Adelanto, Mohave desert. 944 Comment
  UCD130451  Chrysothamnus viscidiflorus J. C. Roos; R. Weatherby 1949-9-2 4643 San Bernardino Kingston Mountains. 1828 Comment
  UCD65711  Eriochloa acuminata A. R. Roos 1937-11-25 San Bernardino San Bernardino County. Comment
  UCD91948  Poa pratensis J. C. Roos 1965-7-18 s.n. San Bernardino at Moonridge in Bear Valley, San Bernardino Mountains. Comment
  UCR13322  Bromus tectorum John C. Roos 1952-4-1 5452 San Bernardino San Bernardino Valley, sandy hills west of Slover Mtn., Colton 305 Comment
  UCR18567  Petradoria pumila John C. Roos 1948-9-18 s.n. San Bernardino Eastern Mojave Desert, north slope of Clark Mountain 1829 Comment
  UCR18569  Allium praecox John C. Roos 1950-3-27 4718 San Bernardino San Bernardino Valley, steep north slope of Slover Mtn. 351 Comment
  UCR18632  Hymenoclea monogyra John C. Roos 1947-5-11 3608 San Bernardino San Bernardino Valley, Fontana Power Station, N. of Rialto 488 Comment
  UCR18646  Rhus aromatica John C. Roos 1950-8-4 s.n. San Bernardino Eastern Mojave Desert, north side of Clark Mountain 1220 Comment
  UCR18744  Glechoma hederacea John C. Roos 1954-4-7 6059 San Bernardino San Bernardino Valley, Loma Linda Hospital grounds, Loma Linda. 351 Comment
  UCR18748  Senecio multilobatus John C. Roos 1949-5-28 4350 San Bernardino Eastern Mojave Desert, Clark Mountain [north side] 1890 Comment
  UCR18761  Descurainia sophia John C. Roos 1966-3-27 s.n. San Bernardino San Bernardino Valley, Loma Linda 396 Comment
  UCR18837  Sherardia arvensis John C. Roos 1948-4-21 3776 San Bernardino San Bernardino Valley, Loma Linda 396 Comment
  UCR18865  Machaeranthera gracilis John C. Roos 1949-6-18 4393 San Bernardino Eastern Mojave Desert, Mountain Pass, on the south side of Clark Mountain 1524 Comment
  UCR18873  Prunella vulgaris John C. Roos 1965-7-31 s.n. San Bernardino San Bernardino Mtns, South Fork of the Santa Ana River in the San Gorgonio Wilderness Area 2439 Comment
  UCR18874  Mentzelia dispersa John C. Roos 1947-6-14 3676 San Bernardino San Bernardino Mtns, Crestline 1585 Comment
  UCR18973  Quercus X morehus John C. Roos 1946-9-1 2980 San Bernardino San Bernardino Mtns, Oak Glen Comment
  UCR19020  Monolepis nuttalliana John C. Roos 1954-3-5 6047 San Bernardino Northern Mojave Desert, Trona Pinnacles, 10 mi. south of Trona Comment
  UCR19039  Cordylanthus parviflorus John C. Roos 1949-8-13 4602 San Bernardino Eastern Mojave Desert, Keystone Canyon, New York Mtns. 1768 Comment
  UCR19052  Mimulus moschatus John C. Roos 1965-7-18 s.n. San Bernardino San Bernardino Mtns, Snow Valley Comment
  UCR19065  Oxytheca parishii var. parishii John C. Roos, L. Roos 1950-9-23 4991 San Bernardino San Bernardino Mtns., at junction of Deep [Little Bear] and Hooks creeks 1448 Comment
  UCR19073  Penstemon labrosus John C. Roos 1965-7-17 s.n. San Bernardino San Bernardino Mtns., Barton Flats Comment
  UCR19074  Castilleja tenuis John C. Roos 1940-7-16 1848 San Bernardino San Bernardino Mtns., Green Valley Comment
  UCR19081  Berberis haematocarpa John C. Roos 1949-6-23 4461 San Bernardino Eastern Mojave Desert, Rock Spring, Mid Hills 1463 Comment
  UCR19086  Symphoricarpos parishii John C. Roos 1965-6-26 s.n. San Bernardino San Bernardino Mtns, Upper Santa Ana River Basin, near Fish Creek 2134 Comment
  UCR19090  Hornungia procumbens John C. Roos 1950-4-26 4763 San Bernardino Mojave Desert, Rabbit Springs, north of Lucerne Valley 884 Comment
  UCR19153  Platanthera sparsiflora John C. Roos 1964-8-1 s.n. San Bernardino San Bernardino Mtns., Mill Creek near quarry 2073 Comment
  UCR19154  Platanthera sparsiflora John C. Roos 1949-7-4 4542 San Bernardino San Bernardino Mtns., Vivian Creek 2165 Comment
  UCR19158  Ipomopsis polycladon John C. Roos 1949-6-18 4394 San Bernardino Eastern Mojave Desert, Mountain Pass, on the south side of Clark Mountain 1524 Comment
  UCR19169  Hypericum anagalloides John C. Roos 1937-7-22 1167 San Bernardino San Bernardino Mtns., South Fork Meadows, upper Santa Ana River, San Gorgonio Wilderness Area. 2439 Comment
  UCR19203  Pyrola aphylla John C. Roos 1937-7-21 1999 San Bernardino San Bernardino Mtns, South Fork Campground at the mouth of Lost Creek 1921 Comment
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May 21 2011
  UCR19224  Ribes velutinum John C. Roos 1949-6-27 4503 San Bernardino Eastern Mojave Desert, Kingston Mountains 1982 Comment
  UCR19228  Populus tremuloides John C. Roos 1967-7-8 s.n. San Bernardino San Bernardino Mtns., Fish Creek 2134 Comment
  UCR19235  Antennaria marginata John C. Roos 1947-6-27 3718 San Bernardino San Bernardino Mtns, South Fork of Santa Ana River, near Barton Flats 2348 Comment
  UCR19293  Stipa elmeri John C. Roos 1946-9-4 2960 San Bernardino San Bernardino Mtns., San Gorgonio Ridge 3445 Comment
  UCR19305  Setaria italica John C. Roos 1965-8-1 s.n. San Bernardino San Bernardino Valley, Loma Linda 305 Comment
  UCR19342  Festuca saximontana John C. Roos 1946-9-4 2958 San Bernardino San Bernardino Mtns., High Creek 2744 Comment
  UCR19355  Sporobolus cryptandrus John C. Roos 1949-7-27 4567 San Bernardino San Bernardino Valley, Loma Linda, residential lawn on Stewart Street 323 Comment
  UCR19360  Sorghum halepense John C. Roos 1965-9-3 s.n. San Bernardino San Bernardino Valley, Loma Linda 305 Comment
  UCR19545  Bidens laevis John C. Roos 1965-9-13 s.n. San Bernardino Mojave Desert, Victorville, Mojave River bottom 762 Comment
  UCR19550  Veronica arvensis John C. Roos 1950-5-28 4820 San Bernardino San Bernardino Valley, Loma Linda; Loma Linda University Campus 323 Comment
  UCR19677  Bouteloua curtipendula John C. Roos 1949-5-28 4364 San Bernardino Eastern Mojave Desert, Clark Mountain 1646 Comment
  UCR20334  Chenopodium incanum var. occidentale John C. Roos, A. R. Roos 1950-8-7 4922 San Bernardino Northeastern Mojave Desert, Beck Spring, Kingston Mountains 1372 Comment
  UCR20433  Holodiscus microphyllus John C. Roos, R. J. Weatherby 1949-9-2 4648 San Bernardino Eastern Mojave Desert, north slope of Kingston Peak 2165 Comment
  UCR20479  Muhlenbergia richardsonis John C. Roos 1950-8-12 4934 San Bernardino San Bernardino Mtns., Vivian Creek 2195 Comment
  UCR20583  Eragrostis minor John C. Roos, A. R. Roos 1950-8-7 4921 San Bernardino Northeastern Mojave Desert, Beck Spring, Kingston Mountains 1372 Comment
  UCR23247  Hesperocnide tenella John C. Roos 1969-5-17 s.n. San Bernardino San Bernardino Valley, Loma Linda Hills 367 Comment
  UCR23280  Centaurea repens John C. Roos 1950-10-27 5019 San Bernardino San Bernardino Valley, San Bernardino, corner of 9th Street and Waterman Avenue 336 Comment
  UCR23312  Quercus berberidifolia John C. Roos, L. Roos 1952-11-1 5907 San Bernardino San Bernardino Valley, hills 1 mi south of Loma Linda 366 Comment
  UCR23331  Plantago aristata John C. Roos 1950-6-11 4831 San Bernardino San Bernardino Valley, Loma Linda, W Central Street 305 Comment
  UCR23340  Notholaena sinuata var. cochisensis John C. Roos 1949-5-29 3532 San Bernardino Eastern Mojave Desert, North side of Clark Mountain 1463 Comment
  UCR23355  Athyrium filix-femina John C. Roos 1961-8-6 s.n. San Bernardino San Bernardino Mountains, north slope of Green Canyon 2500 Comment
  UCR23377  Pinus attenuata John C. Roos 1942-1-24 1007 San Bernardino San Bernardino Mtns., City Creek Comment
  UCR23431  Thelypodium integrifolium John C. Roos 1946-9-21 3046 San Bernardino N slope San Bernardino Mtns/S Mojave Desert, Box 'S' Springs 1082 Comment
Read comments
Jul 5 2014
  UCR23436  Rorippa sphaerocarpa John C. Roos 1965-7-18 s.n. San Bernardino San Bernardino Mtns, Bear Valley Comment
  UCR23440  Lepidium virginicum John C. Roos 1950-6-24 4838 San Bernardino San Bernardino Mtns, Moonridge, Bear Valley 2226 Comment
  UCR23455  Clematis lasiantha John C. Roos 1952-6-21 5784 San Bernardino San Bernardino Mtns., Mill Creek 915 Comment
  UCR23462  Potentilla gracilis John C. Roos 1965-7-18 s.n. San Bernardino San Bernardino Mtns, Moonridge, Bear Valley 2226 Comment
  UCR23477  Ceanothus tomentosus subsp. olivaceus John C. Roos 1966-3-31 s.n. San Bernardino San Bernardino Valley, in the hills of San Timoteo Canyon, near Redlands Blvd 305 Comment
  UCR23487  Ivesia argyrocoma John C. Roos 1965-7-18 s.n. San Bernardino San Bernardino Mtns, Bear Valley near Fawnskin Comment
  UCR23500  Ivesia argyrocoma John C. Roos 1937-7-28 1938 San Bernardino San Bernardino Mountains, Holcomb Valley, north of Delamar Mtn. 2287 Comment
  UCR23565  Petunia parviflora John C. Roos 1967-6-20 s.n. San Bernardino San Bernardino Valley, Loma Linda 396 Comment
  UCR23576  Mentha suaveolens John C. Roos 1969-5-18 s.n. San Bernardino San Bernardino Valley, Loma Linda 396 Comment
  UCR23581  Tiquilia canescens John C. Roos 1949-5-29 3534 San Bernardino Eastern Mojave Desert, north base of Clark Mountain 1345 Comment
  UCR23586  Cryptantha jamesii John C. Roos 1947-6-21 3687 San Bernardino San Bernardino Mtns., east end of Bear Valley 2134 Comment
  UCR23610  Halimolobos diffusa var. jaegeri John C. Roos 1949-6-21 4429 San Bernardino Eastern Mojave Desert, New York Mtns, New York Peak 2256 Comment
  UCR23625  Salvia leucophylla John C. Roos 1940-5-25 1901 San Bernardino San Bernardino Valley, at mouth of Santa Ana River, above Highland Comment
  UCR23634  Caulanthus crassicaulis var. glaber John C. Roos 1949-6-21 4434 San Bernardino Eastern Mojave Desert, New York Mtns, Keystone Canyon. 1768 Comment
  UCR23689  Cuscuta indecora John C. Roos 1946-10-5 3109 San Bernardino San Bernardino Mtns./Southern Mojave Desert, The Pipes, a desert slope on the E side of the mountains, north of Yucca Valley. At mouth of canyon 1357 Comment
  UCR23695  Frasera albomarginata John C. Roos 1949-6-20 4419 San Bernardino Eastern Mojave Desert, New York Mountains, Keystone Canyon 1738 Comment
  UCR23705  Spergularia marina John C. Roos 1952-4-14 5538 San Bernardino San Bernardino Valley, Loma Linda. 305 Comment
  UCR23725  Phacelia lemmonii John C. Roos 1949-6-20 4422 San Bernardino Eastern Mojave Desert, New York Mountains, Keystone Canyon 1738 Comment
  UCR23742  Bahia dissecta John C. Roos 1946-9-28 3100 San Bernardino San Bernardino Mtns., Near Fish Creek 2241 Comment
  UCR23787  Gnaphalium canescens subsp. beneolens John C. Roos 1961-10-28 s.n. San Bernardino San Bernardino Mtns., Mill Creek, at the Marble Quarry Comment
  UCR23789  Erigeron lonchophyllus John C. Roos 1966-8-6 s.n. San Bernardino San Bernardino Mtns., Upper Fish Creek at Fish Creek Meadows. 2439 Comment
  UCR23795  Eriophyllum wallacei John C. Roos 1940-5-25 1904 San Bernardino San Bernardino Valley, at mouth of Santa Ana River, above Highland Comment
  UCR23817  Helenium puberulum John C. Roos 1940-6-23 1894 San Bernardino San Bernardino Valley, Rattlesnake Mountain above Reche Canyon near Loma Linda. Comment
  UCR23821  Helianthus nuttallii subsp. nuttallii John C. Roos 1965-9-22 s.n. San Bernardino Mojave Desert, near the cement plant, Victorville 823 Comment
  UCR23853  Astragalus douglasii John C. Roos 1965-7-18 s.n. San Bernardino San Bernardino Mtns, east end of Bear Valley Comment
  UCR23869  Elymus elongatus John C. Roos 1967-11-25 s.n. San Bernardino San Bernardino Mtns., Mill Creek Comment
  UCR23872  Bromus richardsonii John C. Roos 1940-7-30 1576 San Bernardino San Bernardino Mtns., Bear Valley near Boulder Bay 2134 Comment
  UCR23880  Aristida purpurea var. fendleriana John C. Roos 1949-6-22 4440 San Bernardino Eastern Mojave Desert, New York Mtns., at and near Lecyr Well 1524 Comment
  UCR23901  Lotus grandiflorus John C. Roos 1947-6-27 3713 San Bernardino San Bernardino Mtns., Glen Martin 1738 Comment
  UCR23903  Ericameria cuneata John C. Roos 1942-10-17 1737 San Bernardino San Bernardino Mtns, Mill Creek Canyon at Vivian Creek 2043 Comment
  UCR23904  Glycyrrhiza lepidota John C. Roos 1937-5-29 825 San Bernardino San Bernardino Mtns, Deep Creek Comment
  UCR23908  Astragalus minthorniae John C. Roos 1949-5-29 3540 San Bernardino Eastern Mojave Desert, near Green's Mine, north side of Clark Mountain 1585 Comment
  UCR23923  Aristida adscensionis John C. Roos 1937-6-26 1246 San Bernardino San Bernardino Valley, Redlands, Smiley Heights Comment
  UCR23924  Aristida adscensionis John C. Roos 1942-1-1 875 San Bernardino Mojave Desert, Los Padres Mine, south of Emerson Dry Lake 800 Comment
  UCR23994  Muhlenbergia andina John C. Roos 1962-9-29 s.n. San Bernardino San Bernardino Mtns, Mill Creek 2043 Comment
  UCR23996  Melica stricta John C. Roos 1950-6-17 s.n. San Bernardino San Bernardino Mtns., north slope of Butler Peak 2134 Comment
  UCR24010  Stipa X bloomeri John C. Roos 1946-9-28 s.n. San Bernardino San Bernardino Mtns., Near Fish Creek 2241 Comment
  UCR24025  Lessingia glandulifera var. glandulifera John C. Roos 1946-8-29 2769 San Bernardino San Bernardino Mtns, East end of Bear Valley 2073 Comment
  UCR24031  Muhlenbergia asperifolia John C. Roos 1937-7-27 1761 San Bernardino San Bernardino Mtns, Baldwin Lake Comment
  UCR24036  Glyceria elata John C. Roos 1940-8-3 1584 San Bernardino San Bernardino Mtns., S of Pine Knot [vicinity of Pine Knot Blvd., city of Big Bear Lake] Comment
  UCR24042  Poa pratensis John C. Roos 1940-8-3 1586 San Bernardino San Bernardino Mtns., Bluff Lake 2317 Comment
  UCR24060  Muhlenbergia californica John C. Roos 1962-8-11 s.n. San Bernardino San Bernardino Mtns., quarry in Mill Creek Canyon. 2043 Comment
  UCR24087  Hordeum brachyantherum subsp. californicum John C. Roos 1947-6-21 3708 San Bernardino San Bernardino Mtns, Running Springs 1838 Comment
  UCR24095  Atriplex torreyi John C. Roos 1946-9-21 3059 San Bernardino Southern Mojave Desert, Lucerne Valley 884 Comment
  UCR24107  Sparganium eurycarpum John C. Roos 1943-4-27 2628 San Bernardino San Bernardino Valley, swamp south of San Bernardino 305 Comment
  UCR24109  Atriplex truncata John C. Roos 1950-6-24 4844 San Bernardino Mojave Desert, Rabbit Springs 884 Comment
  UCR24114  Chenopodium fremontii John C. Roos 1966-8-6 s.n. San Bernardino San Bernardino Mtns., Cienaga Seca Creek, Heart Bar Ranch 2073 Comment
  UCR24132  Madia gracilis John C. Roos 1950-6-24 4833 San Bernardino San Bernardino Mtns., [Dry] Creek drainage near Running Springs 1677 Comment
  UCR24148  Lilium parryi John C. Roos 1957-7-28 6656 San Bernardino San Bernardino Mtns, Vivian Creek Comment
  UCR24161  Senecio ionophyllus John C. Roos 1937-7-22 332 San Bernardino San Bernardino Mtns, Trail to South Fork Meadows 2500 Comment
  UCR24166  Solidago confinis John C. Roos 1940-7-30 1578 San Bernardino San Bernardino Mtns., near Bear Valley Comment
  UCR24185  Atriplex canescens var. laciniata John C. Roos 1965-9-22 s.n. San Bernardino Mojave Desert, Barstow Comment
  UCR24214  Suaeda moquinii John C. Roos 1946-9-20 3056 San Bernardino Southern Mojave Desert, alkalai flat near Lucerne Valley Comment
  UCR24227  Gilia latiflora subsp. davyi John C. Roos 1949-4-30 4275 San Bernardino Mojave Desert, north of Hesperia, at intersection of Apple Valley Road and the railroad tracks 854 Comment
  UCR24230  Ipomopsis arizonica John C. Roos 1949-6-22 4448 San Bernardino Eastern Mojave Desert, New York Mtns, Keystone Canyon. 1829 Comment
  UCR24246  Navarretia hamata John C. Roos, L. Roos 1952-6-14 5769 San Bernardino San Bernardino Mtns. foothills/San Bernardino Valley, Yucaipa, abandoned grain field 915 Comment
  UCR24263  Eriogonum heermannii var. argense John C. Roos 1946-9-21 3078 San Bernardino San Bernardino Mtns., Cushenbury Spring 1280 Comment
  UCR24268  Eriogonum parishii John C. Roos 1966-8-6 s.n. San Bernardino San Bernardino Mtns., Fish Creek Comment
  UCR24275  Polygonum amphibium Alfred R. Roos 1937-11-20 s.n. San Bernardino San Bernardino Valley, East Highland; Edward's Reservoir 488 Comment
  UCR24365  Arnica chamissonis John C. Roos 1937-7-28 1942 San Bernardino San Bernardino Mountains, Holcomb Valley, north of Delamar Mtn. 2287 Comment
  UCR24373  Stipa parishii John C. Roos 1949-6-24 3544 San Bernardino Eastern Mojave Desert, summit of Clark Mountain 2409 Comment
  UCR24374  Tridens muticus John C. Roos 1949-5-28 3536 San Bernardino Eastern Mojave Desert, near Coloseum Mine, on the N slopes of Clark Mountain 1829 Comment
  UCR24381  Populus trichocarpa var. ingrata John C. Roos 1940-8-10 1551 San Bernardino San Bernardino Mtns., upper Santa Ana River, Big Meadows 2088 Comment
  UCR24400  Machaeranthera canescens John C. Roos 1946-9-21 3080 San Bernardino San Bernardino Mtns, Bear Valley, east of Grout Bay 2043 Comment
  UCR24420  Ribes velutinum John C. Roos 1949-6-21 4432 San Bernardino Eastern Mojave Desert, New York Peak, New York Mountains 2134 Comment
  UCR24452  Viola purpurea John C. Roos 1966-5-7 s.n. San Bernardino San Bernardino Mtns., Barton Flats 1829 Comment
  UCR24465  Verbena bracteata John C. Roos 1949-6-20 4413 San Bernardino Eastern Mojave Desert, Mountain Pass, Clark Mountain Comment
  UCR24481  Collinsia heterophylla var. austromontana John C. Roos 1956-5-26 6579 San Bernardino San Bernardino Mtns., Wildwood Cyn, near Yucaipa Comment
  UCR24486  Antirrhinum kingii John C. Roos 1949-5-29 3531 San Bernardino Eastern Mojave Desert, near [north of] the Coloseum Mine, Clark Mountain 1768 Comment
  UCR24650  Brickellia oblongifolia John C. Roos 1946-10-5 3116 San Bernardino San Bernardino Mtns., Pipes Creek, in a rocky wash 2287 Comment
  UCR25066  Ivesia jaegeri John C. Roos 1949-5-28 4362 San Bernardino Eastern Mojave Desert, north slope Clark Mountain 1829 Comment
  UCR25068  Fimbristylis thermalis John C. Roos, L. Roos 1951-8-25 5197 San Bernardino San Bernardino Mountains, Arrowhead Hot Springs 610 Comment
  UCR25125  Brickellia californica John C. Roos 1946-10-5 3115 San Bernardino San Bernardino Mtns., Pipes Creek, [upper] Pipes Canyon 2134 Comment
  UCR25240  Eragrostis mexicana subsp. virescens Alfred R. Roos 1937-11-25 s.n. San Bernardino San Bernardino Valley/San Bernardino Mtns. Foothills, Highland, east of San Bernardino 457 Comment
  UCR25287  Gilia leptomeria John C. Roos 1949-5-28 3541 San Bernardino Eastern Mojave Desert, below Coloseum Mine, north slope Clark Mountain 1616 Comment
  UCR25301  Gilia leptantha John C. Roos 1961-9-30 s.n. San Bernardino San Bernardino Mtns., Cienaga Seca Creek 2348 Comment
  UCR25356  Stipa lettermanii John C. Roos, L. Roos 1952-8-23 5886 San Bernardino San Bernardino Mtns, Stetson Creek, Barton Flats 1890 Comment
  UCR25358  Platystemon californicus John C. Roos 1952-5-10 5647 San Bernardino Mojave Desert, Adelanto 915 Comment
  UCR25391  Plantago ovata John C. Roos 1937-4-23 777 San Bernardino Little San Bernardino Mtns/Southern Mojave Desert, near Morongo Pass Comment
  UCR25396  Verbena scabra John C. Roos 1937-7-31 964 San Bernardino San Bernardino Valley, San Bernardino 305 Comment
  UCR25401  Baileya pleniradiata John C. Roos 1946-10-4 3125 San Bernardino Mojave Desert, Lone Star Ranch [Yucca Valley; the site of a gas station north of Joshua Tree Nat. Mon.] Comment
  UCR25417  Lasthenia gracilis John C. Roos, L. Roos 1952-5-10 5643 San Bernardino Mojave Desert, Adelanto 915 Comment
  UCR25419  Amsinckia tessellata John C. Roos, L. Roos 1952-5-10 5627 San Bernardino Mojave Desert, Kramer Hills Comment
  UCR25753  Brodiaea terrestris subsp. kernensis John C. Roos 1937-7-31 2349 San Bernardino Transverse Ranges/San Bernardino Mtns, Twin Peaks Post Office 1768 Comment
  UCR25756  Salazaria mexicana John C. Roos 1937-4-23 785 San Bernardino Mojave Desert, 20 mi. west of Twentynine Palms (near Yucca Valley) 915 Comment
  UCR25862  Astragalus acutirostris John C. Roos, L. Roos 1952-5-10 5631 San Bernardino Mojave Desert, Kramer Hills Comment
  UCR25910  Lotus strigosus John C. Roos 1947-2-22 3280 San Bernardino San Bernardino Mtns, along Deep Creek Comment
  UCR25925  Eremogone kingii var. glabrescens John C. Roos 1949-6-27 4510 San Bernardino Eastern Mojave Desert, Kingston Mountains 2134 Comment
  UCR25933  Sedum niveum John C. Roos 1949-7-2 4533 San Bernardino San Bernardino Mtns, Snow Canyon [= Rattlesnake Creek, off Mill Creek Cyn. above Forest Falls] 2195 Comment
  UCR25934  Calystegia fulcrata John C. Roos 1949-7-16 4565 San Bernardino San Bernardino Mtns., Moonridge Ski Area, Bear Valley 2256 Comment
  UCR25936  Glossopetalon spinescens John C. Roos 1949-6-19 4402 San Bernardino Eastern Mojave Desert, SE foot of Clark Mountain 1951 Comment
  UCR25938  Astragalus lentiginosus var. sierrae John C. Roos 1941-5-30 98 San Bernardino San Bernardino Mtns, Big Meadows in Heart Bar State Park 2073 Comment
  UCR25989  Nemacladus orientalis John C. Roos, Lucille Roos 1949-4-9 4205 San Bernardino Sonoran (Colorado) Desert, NW of Cross Roads, Whipple Mtns. 183 Comment
  UCR26077  Baccharis sergiloides John C. Roos 1947-8-2 3731 San Bernardino San Bernardino Mtns., North of Burns Wash, on the E slope of the mtns. 1315 Comment
  UCR26087  Ericameria cuneata John C. Roos 1948-9-25 4076 San Bernardino San Bernardino Mtns, Arrowhead Highlands 1524 Comment
  UCR26141  Ericameria cooperi John C. Roos 1949-5-29 4371 San Bernardino Eastern Mojave Desert, Coloseum Mine, Clark Mountain 1707 Comment
  UCR26146  Lycium cooperi John C. Roos 1949-4-30 4255 San Bernardino Mojave Desert, 2 miles north of Hesperia along railroad tracks Comment
  UCR26163  Stephanomeria pauciflora John C. Roos 1947-4-18 3451 San Bernardino Central Mojave Desert, Cronese Dry Lake Comment
  UCR26168  Camissonia campestris John C. Roos 1952-4-22 5568 San Bernardino San Bernardino Valley, 1 mi west of Colton along Hwy 99 305 Comment
  UCR26209  Potentilla biennis John C. Roos 1949-7-16 4547 San Bernardino San Bernardino Mtns., [Big] Bear Lake, Bear Valley 2256 Comment
  UCR26216  Ranunculus eschscholtzii John C. Roos 1941-7-5 110 San Bernardino San Bernardino Mtns., slopes SE of Dollar Lake, San Gorgonio Mtn 2896 Comment
Read comments
Mar 16 2012
  UCR26243  Trichostema micranthum John C. Roos 1937-8-27 2345 San Bernardino Mojave Desert, [Along the Mojave River], Victorville. Comment
  UCR26248  Gentianopsis simplex John C. Roos 1937-7-21 1996 San Bernardino San Bernardino Mtns, South Fork of Santa Ana River 1921 Comment
Read comments
Oct 26 2013
  UCR26285  Hordeum depressum John C. Roos 1952-4-22 5566 San Bernardino San Bernardino Valley, Waterman Ave. west of Loma Linda 305 Comment
  UCR26297  Asclepias asperula John C. Roos 1949-6-25 4490 San Bernardino Eastern Mojave Desert, near Coloseum Mine, north side Clark Mountain 1738 Comment
  UCR26299  Salvia pachyphylla John C. Roos 1949-6-19 4406 San Bernardino Eastern Mojave Desert, SE foot of Clark Mountain 1951 Comment
  UCR26322  Bloomeria crocea var. crocea John C. Roos 1948-5-22 3867 San Bernardino San Bernardino Valley, San Timoteo Canyon, south of Redlands 457 Comment
  UCR26339  Puccinellia nuttalliana John C. Roos 1949-7-16 4549 San Bernardino San Bernardino Mtns., [Big] Bear Lake, Bear Valley 2256 Comment
  UCR27543  Calochortus palmeri John C. Roos, L. Roos 1952-7-12 5809 San Bernardino San Bernardino Mtns., NE shoulder of Strawberry Peak 1829 Comment
  UCR27597  Chorizanthe leptotheca John C. Roos 1948-5-22 3863 San Bernardino San Bernardino Valley, San Timoteo Canyon, south of Redlands 457 Comment
  UCR28723  Lonicera subspicata var. johnstonii John C. Roos 1948-6-13 3880 San Bernardino San Gabriel Mtns., above Glenn Ranch, Lytle Creek Comment
  UCR30531  Hilaria rigida John C. Roos 1949-5-14 4301 San Bernardino Southern Mojave Desert/San Bernardino Mtns., Rock Corral, north base of the mountains 1067 Comment
  UCR30560  Erigeron breweri var. porphyreticus John C. Roos 1947-6-21 3691 San Bernardino San Bernardino Mtns, Fawnskin, Bear Valley Comment
  UCR30562  Anisocoma acaulis John C. Roos 1949-5-28 4339 San Bernardino Eastern Mojave Desert, wash near Green's Mine, north side Clark Mountain 1646 Comment
  UCR30813  Lupinus latifolius var. parishii John C. Roos 1947-6-21 3703 San Bernardino San Bernardino Mtns, Bear Valley: N shore of Big Bear Lake near the dam 2073 Comment
  UCR30814  Lilium parryi John C. Roos 1965-7-18 s.n. San Bernardino San Bernardino Mtns, Moonridge, Bear Valley 2226 Comment
  UCR30816  Petrophytum caespitosum John C. Roos 1949-8-13 4601 San Bernardino Eastern Mojave Desert, New York Mountains, Keystone Canyon. 1829 Comment
  UCR30863  Cleome serrulata John C. Roos 1950-5-11 4794 San Bernardino San Bernardino Valley, South 'E' Street near the Santa Ana River bridge, San Bernardino 305 Comment
  UCR31683  Galium angustifolium subsp. gabrielense John C. Roos 1967-7-15 s.n. San Bernardino San Bernardino Mtns., ridge between South and North Forks of Mission Creek 2591 Comment
  UCR32865  Bromus carinatus John C. Roos 1949-6-25 4494 San Bernardino Eastern Mojave Desert, east slope of Clark Mountain [probably Colosseum Gorge] 1524 Comment
  UCR34462  Pyrola dentata John C. Roos 1937-7-23 344 San Bernardino San Bernardino Mountains, Fish Creek, upper Santa Ana River 1982 Comment
  UCSB37777  Eriophyllum confertiflorum Roos, John 1965-6-26 San Bernardino Upper Santa Ana Basin, near Fish Creek, San Bernardino Mtns. Comment
  UCSB37784  Achnatherum occidentale subsp. occidentale Roos, John 1965-7-18 San Bernardino Bear Valley, San Bernardino Mtns. Comment
  UCSB37822  Helenium bigelovii Roos, John 1965-9-11 San Bernardino Bank of Mill Creek, San Bernardino Mtns. Comment
  UCSB37828  Heterotheca villosa Roos, John 1965-9-11 San Bernardino In Mill Creek Canyon, San Bernardino Mts. Comment
Read comments
Jan 23 2012
  UCSB42117  Clarkia purpurea Roos, John 1965-6-12 San Bernardino Igo's near Mountain Home Village; in Mill Creek Canyon; San Bernardino Mtns Comment
  UCSB42126  Castilleja minor subsp. spiralis Roos, John 1965-6-12 San Bernardino Igos near Mountain Home tillage and Hill Creek, San Bernardino Mtns. Comment
  UCSB42133  Persicaria lapathifolia Roos, John 1965-9-15 San Bernardino Mohave River at Victorville. Comment
  UCSB42135  Veronica americana Roos, John 1965-6-26 San Bernardino Upper Santa Ana Canyon; Heart Bar area, San Bernardino Mtns Comment
  UCSB42137  Cleomella parviflora Roos, John 1949-4-30 San Bernardino Rabbit Springs, Lucerne Valley, southern Mojave Valley 883 Comment
  UCSB42143  Phlox austromontana Roos, John 1967-5-30 San Bernardino Arrastre Creek, on the upper slopes of the San Bernardino Mtns Comment
  UCSB42152  Moluccella laevis Roos, John 1969-5-18 San Bernardino Loma Linda Comment
  UCSB42165  Plantago virginica Roos, A. 1938-6-12 San Bernardino Loma Linda Comment
  UCSB42167  Monardella australis subsp. australis Roos, John 1965-7-17 San Bernardino Kilpecker Creek, San Bernardino Mtns. Comment
  UCSB42174  Stellaria longipes Roos, John 1965-6-26 San Bernardino Upper Santa Ana Canyon, Heart Bar Park, San Bernardino Mtns. Comment
  UCSB42202  Lobelia cardinalis Roos, John 1965-10-2 San Bernardino Dripping Spring, Monkey Face, Mill Creek, San Bernardino Mtns. Comment
  UCSB42222  Astragalus douglasii Roos, John 1965-7-18 San Bernardino Bear Valley, San Bernardino Mtns. Comment
  UCSB42269  Polygonum douglasii Roos, John 1965-7-18 San Bernardino Moonridge, Bear Valley, San Bernardino Mtns. Comment
  UCSB45582  Digitaria sanguinalis John C. Roos 1965-7-5 San Bernardino collected in Loma Linda Loma Linda 304 Comment
  UCSB45605  Nemacladus glanduliferus Roos, Lucille; Roos, John 1952-5-10 San Bernardino Kremer Hills, Mojave Desert 853 Comment
  UCSB45610  Castilleja plagiotoma Roos, John 1949-4-30 San Bernardino 5-6 miles S.W. of Hesperia 1127 Comment
Read comments
Jul 17 2019
  UCSB45938  Bassia hyssopifolia Roos, John 1965-7-3 San Bernardino Loma Linda Comment
  UCSB45955  Pseudognaphalium stramineum Roos, John 1965-7-18 San Bernardino Bear Valley, San Bernardino Mtns. Comment
  UCSB46758  Hesperoyucca whipplei Roos, John 1965-6-6 San Bernardino Mill Creek near Fallsvale, San Bernardino Mtns. Comment
  UCSB51276  Poa pratensis Roos, John 1965-6-26 San Bernardino Upper Santa Ana River near Heart Bar Park, San Bernardino Mtns. Comment
  UCSB51281  Poa compressa Roos, John; Roos, Lucille 1950-7-5 San Bernardino 414 Steward St. Loma Linda 323 Comment
  UCSB51282  Polypogon viridis Roos, John 1965-6-12 San Bernardino Igo's near Mountain Home Village and Mill Creek; San Bernardino Mtns. Comment
  UCSB51363  Schismus barbatus Roos, John 1965-6-6 San Bernardino Mill Creek near Fallsvale, San Bernardino Mtns. Comment
  UCSB51365  Hordeum jubatum Roos, John 1965-7-18 San Bernardino Big Bear Lake, San Bernardino Mtns. Comment
  UCSB51410  Echinochloa crus-galli Roos, John 1965-7-4 San Bernardino Loma Linda 304 Comment
  CLARK-A1528-1027  Eriodictyon trichocalyx John C. Roos 1941-5-13 132 San Bernardino San Bernardino Mountains 761 Comment
  CLARK-A1528-1314  Clematis ligusticifolia John C. Roos 1946-9-3 2973 San Bernardino Oak Glen Comment
  CLARK-A1528-1332  Nepeta cataria John C. Roos 1946-8-31 2989 San Bernardino Oak Glen Comment
  CLARK-A1528-1472  Apocynum androsaemifolium John C. Roos 1936-9-2 1538 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-1649  Bellis perennis John C. Roos 1965-6-21 San Bernardino San Gabriel Mountains Comment
  CLARK-A1528-1758  Chaenactis glabriuscula var. lanosa John C. Roos 1952-4-22 5569 San Bernardino 304 Comment
Read comments
Dec 1 2015
  CLARK-A1528-1915  Helianthus petiolaris John C. Roos, Lucille Roos 1954-4-30 6071 San Bernardino 304 Comment
  CLARK-A1528-2202  Coldenia canescens John C. Roos 1949-5-29 3534 San Bernardino Clark Mountain 1219 Comment
  CLARK-A1528-2266  Impatiens balfourii John C. Roos 1957-6-22 6615 San Bernardino Zanja Creek 548 Comment
  CLARK-A1528-2822  Lupinus breweri John C. Roos 1946-8-29 2773 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3001  Phacelia curvipes John C. Roos 1937-7-18 673 San Bernardino San Gabriel Mountains Comment
  CLARK-A1528-3109  Salvia dorrii John C. Roos 1947-2-22 3288 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3138  Molucella laevis John C. Roos 1969-5-18 San Bernardino Loma Linda Comment
  CLARK-A1528-3177  Monardella lanceolata John C. Roos 1940-8-10 1553 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-3555  Pinus monophylla John C. Roos 1935-7-18 699 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-5385  Coronopus didymus John C. Roos 1953-4-16 5913 San Bernardino San Bernardino Valley 320 Comment
  CLARK-A1528-5526  Euphorbia setiloba John C. Roos 1946-11-2 3153 San Bernardino Comment
  CLARK-A1528-5665  Dudleya cymosa John C. Roos 1937-6-5 1494 San Bernardino San Bernardino Mountains Comment
  CLARK-A1528-5671  Lupinus bicolor subsp. microphyllus John C. Roos 1937-3-24 1351 San Bernardino San Bernardino Comment
  CLARK-A1528-995  Lupinus concinnus subsp. orcuttii John C. Roos 1937-4-23 685 San Bernardino Twentynine Palms 609 Comment
  LA102242  Mimulus guttatus John C. Roos; 1951-9-24 5241 San Bernardino along Gage Canal, Loma Linda 304 Comment
Read comments
Aug 20 2014
  POM263006  Verbesina encelioides subsp. exauriculata J. C. Roos 1940-9-15 228 San Bernardino Orchard near Loma Linda Comment
  POM263037  Phyla lanceolata J. C. Roos 1937-7-15 368 San Bernardino [Unspecified] Comment
  POM264309  Phacelia distans J. C. Roos 1937-4-28 676 San Bernardino Turtle Mountains. Comment
  POM264312  Oenanthe sarmentosa J. C. Roos 1937-6-6 660 San Bernardino San Bernardino. Comment
  POM264414  Lycium cooperi J. C. Roos 1937-4-23 692 San Bernardino Pass toward 29 Palms, Mojave Desert. Comment
  POM265645  Cerastium fontanum subsp. vulgare J. C. Roos 1937-3-8 1303 San Bernardino Loma Linda, San Bernardino Valley. Comment
  POM266368  Artemisia rothrockii J. C. Roos 1940-8-3 1561 San Bernardino E end of Bear Valley Comment
  POM302561  Veronica persica J. C. Roos 1943-4-1 2624 San Bernardino County Hospital. Comment
  POM302562  Veronica serpyllifolia var. humifusa J. C. Roos 1943-7-4 2724 San Bernardino along stream, north base of Sugarloaf Mt. Comment
  RSA0029557  Xanthisma gracile J. C. Roos 1949-6-23 4466 San Bernardino Lanfair Valley, NW of Hackberry Mtn. 1311 Comment
  RSA0034569  Clarkia rhomboidea J. C. Roos 1965-6-12 s.n. San Bernardino Igo's near Mountain Home Village and Mill Creek. San Bernardino Mountains. [Note: Igo s is present location of Mountain Home Village, Hwy. 38, San Bernardino Mtns. -SDW 2006] Comment
  RSA0034570  Epilobium exaltatum J. C. Roos 1965-7-31 s.n. San Bernardino South Fork Meadows, upper Santa Ana River, San Bernardino Mtns. 2287 Comment
  RSA0036055  Eriochloa gracilis A. R. Roos 1937-11-25 s.n. San Bernardino Highland Comment
  RSA0066181  Heuchera rubescens var. alpicola J. C. Roos, L. Roos 1949-5-28 4351 San Bernardino North slopes of Clark Mountain. 1890 Comment
  RSA0113026  Cirsium vulgare J. C. Roos 1955-8-8 6525 San Bernardino Loma Linda 320 Comment
  RSA251778  Boerhavia wrightii J. C. Roos 1937-8-22 14 San Bernardino North of Blythe, Colorado Desert Comment
  RSA449976  Polygonum convolvulus J. C. Roos 1965-6-9 6587 San Bernardino Victoria St. in San Bernardino. Comment
  RSA450076  Nicotiana glauca J. C. Roos 1965-6-27 s.n. San Bernardino Loma Linda Hills. 305 Comment
  RSA48857  Gaura sinuata J. C. Roos 1949-10-8 4689 San Bernardino Jurupa Hills at south end Poplar Ave., Fontana. 305 Comment
  RSA659793  Acacia dealbata J. C. Roos 1938-3-15 s.n. San Bernardino Loma Linda. Comment
  RSA85489  Phalaris minor J. C. Roos 1952-4-21 5564 San Bernardino Loma Linda 305 Comment
  RSA89965  Chrysothamnus nauseosus subsp. hololeucus J. C. Roos 1950-10-17 5010 San Bernardino Little Pigeon Pass, Barton Road ca. 2 mi. W of Loma Linda. 320 Comment
  RSA92557  Oenothera californica subsp. californica J. C. Roos, L. Roos 1952-5-9 5624 San Bernardino Near Santa Ana River, at Colton. 274 Comment
  RSA92559  Caulanthus inflatus J. C. Roos 1952-5-10 5629 San Bernardino Kremer Hills {Kramer Hills} 854 Comment
  RSA92564  Malacothrix coulteri J. C. Roos, Lucille Roos 1952-5-10 5637 San Bernardino 4 miles northwest of Adelanto, near Red Raven Mine 823 Comment
  RSA92575  Amsinckia tessellata J. C. Roos, L. Roos 1952-5-10 5627 San Bernardino Kremer Hills {Kramer Hills} 854 Comment
  RSA92604  Aristida purpurea var. purpurea J. C. Roos, L. Roos 1952-5-11 5655 San Bernardino Scott's Canyon, 2.5 miles southeast of Loma Linda. 427 Comment
  RSA92735  Cressa truxillensis J. C. Roos 1954-7-18 6202 San Bernardino Saratoga Springs, Mojave desert. 61 Comment
  RSA92770  Atriplex lentiformis J. C. Roos, L. Roos 1954-10-2 6252 San Bernardino 237 S Waterman. 320 Comment
  SD121305  Chenopodium album J. C. Roos 1965-7-4 San Bernardino Loma Linda 305 Comment
  SEINET10460645  Heterocodon rariflorum Roos 1937-5-28 Roos 821 San Bernardino LAS FLORES RANCH, W FORK OF MOHAVE R. Comment
  SEINET13387085 Image available Achnatherum hymenoides J. C. Roos 1965-1 San Bernardino Victorville, Mohave Desert Comment
  SEINET3351935 Image available Lupinus shockleyi J. C. Roos 1949-1 4210 San Bernardino Sand flat near Freda, Ward Valley, sourth of the Turtle Mountains 305 Comment
  SEINET4172004 Image available Acer glabrum subsp. diffusum J. C. Roos 1940-1 837 San Bernardino Snow Cyn., San Bernardino Mts., 2042 Comment
  UCD129506  Baileya pauciradiata J. C. Roos 1947-4-18 3448 San Bernardino Cronise Lake. Comment
  UCD133287  Hulsea vestita J. C. Roos 1943-7-4 2718 San Bernardino Sugarloaf Mountain, San Bernardino Mountains. 2987 Comment
  UCSB37358  Salpichroa origanifolia Roos, John 1965-6-29 San Bernardino Bloomington Comment
  CAS-BOT-BC130971  Deinandra floribunda J. C. Roos 1965-10-10 s.n. San Diego 8 miles S.E. of Dulzura Comment
  CAS-BOT-BC184927  Chloris gayana J. C. Roos 1965-10-10 s.n. San Diego Roadside of Highway 395, 0.1 miles south of the San Diego/Riverside county line. Comment
  CAS-BOT-BC220749  Salvia clevelandii John Roos; Lucille Roos 1950-8-19 4943 San Diego Torrey Pines Park 60 Comment
  CAS-BOT-BC314521  Guizotia J. C. Roos 1955-7-2 6473 San Diego Escondido 182 Comment
  CLARK-A1528-1132  Cardionema ramosissimum John C. Roos 1937-6-17 1523 San Diego Carlsbad 12 Comment
  CLARK-A1528-1507  Allium haematochiton John C. Roos 1935-2-24 San Diego National City Comment
  CLARK-A1528-1759  Chaenactis glabriuscula var. tenuifolia John C. Roos 1937-6-11 2488 San Diego Barrett Comment
  CLARK-A1528-1898  Haplopappus palmeri John C. Roos 1965-10-9 San Diego La Mesa Comment
  CLARK-A1528-1957  Hulsea vestita John C. Roos 1937-6-18 1238 San Diego Palomar Mountain Comment
  CLARK-A1528-2140  Viguiera laciniata John C. Roos 1937-6-11 1443 San Diego Barrett Comment
  CLARK-A1528-2296  Athysanus pusillus John C. Roos 1937-4-18 1293 San Diego Campo Comment
  CLARK-A1528-2382  Cleomella obtusifolia John C. Roos 1937-6-9 2384 San Diego Anza Borrego Desert State Park Comment
  CLARK-A1528-2480  Spergularia villosa John C. Roos 1937-6-13 640 San Diego San Ysidro Comment
  CLARK-A1528-2679  Arctostaphylos pungens John C. Roos 1937-6-15 1243 San Diego Cleveland Mountains Comment
  CLARK-A1528-2838  Lotus haydonii John C. Roos 1937-6-10 2019 San Diego Mountain Spring Comment
  CLARK-A1528-2890  Trifolium variegatum John C. Roos 1937-6-14 1690 San Diego Descanso Comment
  CLARK-A1528-2924  Quercus engelmannii John C. Roos 1937-6-18 1237 San Diego Palomar Mountain Comment
  CLARK-A1528-2929  Frankenia grandifolia John C. Roos 1941-6-16 San Diego Pacific Beach Comment
  CLARK-A1528-3108  Salvia clevelandii John C. Roos, Lucille Roos 1950-8-19 4943 San Diego Torrey Pines Park Comment
  CLARK-A1528-3211  Ammannia coccinea John C. Roos 1937-8-30 2567 San Diego Sweetwater Lake Comment
  CLARK-A1528-3365  Clarkia epilobioides John C. Roos 1937-6-11 1758 San Diego Campo Comment
  CLARK-A1528-3437  Plantago erecta John C. Roos 1937-6-18 936 San Diego Warner Springs Comment
  CLARK-A1528-3810  Limonium sinuatum John C. Roos 1949-10-1 4670 San Diego Marsh Comment
  CLARK-A1528-4076  Selaginella cinerascens John C. Roos 1937-6-16 1229 San Diego Hodges Lake Comment
  CLARK-A1528-4532  Bromus carinatus John C. Roos 1937-6-18 1239 San Diego Palomar Mountain Comment
  CLARK-A1528-4890  Quercus dumosa John C. Roos 1937-8-31 480 San Diego Comment
Read comments
Jun 6 2016
  CLARK-A1528-5020  Centaurium venustum John C. Roos 1937-6-11 1446 San Diego Campo Comment
  CLARK-A1528-5714  Chorizanthe fimbriata var. laciniata John C. Roos 1937-6-8 1491 San Diego San Felipe Valley Comment
  CLARK-A1528-7818  Lolium multiflorum John C. Roos 1937-6-13 3 San Diego Chula Vista Comment
  POM151780  Orthocarpus attenuatus J. C. Roos 1937-6-14 4 San Diego near Descanso Junction Comment
  POM262918  Chamaesyce albomarginata J. C. Roos 1937-6-8 628 San Diego San Felipe Valley. Comment
  POM263245  Penstemon heterophyllus J. C. Roos 1937-6-15 631 San Diego Near Cuyamaca Lake, Cuyamaca Mountains. Comment
  POM265651  Reseda odorata J. C. Roos 1937-8-31 2563 San Diego Oceanside Comment
  POM265796  Malacothamnus densiflorus J. C. Roos 1937-6-11 923 San Diego Dulzura. Comment
  POM265818  Ammannia coccinea J. C. Roos 1937-6-14 926 San Diego La Mesa Comment
  POM266634  Brodiaea terrestris subsp. kernensis J. C. Roos 1937-6-14 2241 San Diego near Descanso Junction Comment
  POM301542  Petunia parviflora J. C. Roos 1937-8-30 2559 San Diego Otay Comment
  POM301610  Triodanis biflora J. C. Roos 1937-6-8 1498 San Diego Warner Hot Springs. Comment
  POM301708  Selaginella cinerascens J. C. Roos 1937-6-16 1229 San Diego Hodges Lake Comment
  RSA262779  Hoffmannseggia glauca J. C. Roos 1936-5-3 710 San Diego San Felipe Valley, west edge Colorado Desert. Comment
  RSA301476  Mimulus parishii J. C. Roos 1937-6-8 938 San Diego Damp sandy stream bed; a few miles north of Warners Hot Springs, eastern San Diego County, California. Comment
  RSA41281  Gaura sinuata J. C. Roos 1937-6-16 513 San Diego Near Ramona. Comment
  RSA450123  Quercus engelmannii J. C. Roos 1965-10-10 s.n. San Diego 5 mi NE of Fallbrook. Comment
  RSA450459  Bothriochloa barbinodis J. C. Roos 1965-10-10 s.n. San Diego Otay Lake Comment
  RSA48692  Lonicera subspicata var. denudata J. C. Roos 1949-7-30 4595 San Diego North of Pala. Comment
  RSA659466  Gilia angelensis J. C. Roos 1954-4-10 6064 San Diego San Pasqual 152 Comment
  RSA662075  Amaranthus hybridus A. R. Roos 1937-12-2 s.n. San Diego De Luz Canyon: Along De Luz-Murrieta Road and De Luz Creek. 150 Comment
  RSA85135  Xylococcus bicolor J. C. Roos, L. Roos 1954-2-13 6044 San Diego Merriam Mts. about 5 miles north of Escondido. 289 Comment
  RSA86902  Matthiola incana J. C. Roos 1950-8-19 4940 San Diego Torrey Pines Beach 6 Comment
  UC1234734  Guizotia abyssinica J. C. Roos 1955-7-2 6473 San Diego collected in Escondido Escondido 182 Comment
  UCR18920  Sanguisorba annua John C. Roos 1937-6-15 1435 San Diego Peninsular Range, Cuyamaca Lake 1409 Comment
  UCR23336  Selaginella cinerascens John C. Roos 1937-6-16 1229 San Diego Peninsular Range, Hodges Lake 137 Comment
Read comments
Sep 19 2013
  UCR23362  Pityrogramma triangularis var. viscosa John C. Roos 1955-3-26 6277 San Diego Peninsular Range, Moosa Canyon near dam, along Hwy 395, 10 miles north of Escondido 152 Comment
  UCR23949  Lupinus concinnus subsp. orcuttii John C. Roos 1955-3-28 6281 San Diego Hills 10 mi. north of Escondido, Moosa Canyon near the dam, along Hwy 395 152 Comment
  UCR23951  Vachellia farnesiana var. minuta John C. Roos 1937-8-30 2560 San Diego 1 mi SW of Otay 122 Comment
  UCR23980  Bothriochloa barbinodis John C. Roos 1965-10-10 s.n. San Diego Bank of Otay Lake 150 Comment
  UCR24199  Echinodorus berteroi John C. Roos 1965-10-10 s.n. San Diego Bank of Otay Lake 150 Comment
  UCR24415  Jepsonia parryi John C. Roos 1955-10-19 6572 San Diego Hills by the dam in Moosa Canyon along Hwy 395, 10 mi north of Escondido. 152 Comment
  UCR25987  Triodanis biflora John C. Roos 1937-6-8 1498 San Diego Peninsular Range, Warner Hot Springs Comment
  UCR26257  Viola lobata John C. Roos 1937-6-15 524 San Diego Peninsular Range, Julian Comment
  UCR26268  Xylococcus bicolor John C. Roos, L. Roos 1955-2-19 6272 San Diego Peninsular Range, Cole Grade between Valley Center and Pala Comment
  UCR27435  Lippia lanceolata John C. Roos 1937-8-30 2344 San Diego Sweetwater Lake Comment
  UCR30512  Pinus torreyana John C. Roos 1937-6-16 2224 San Diego Southern Coastal Plain, Torrey Pines Ridge, Del Mar 137 Comment
  UCR30811  Streptanthus bernardinus John C. Roos 1937-6-15 2218 San Diego Peninsular Range, hills near Julian Comment
  UCR30830  Calystegia soldanella John C. Roos 1937-6-13 2230 San Diego Imperial Beach Comment
  UCSB37802  Baccharis sarothroides Roos, John 1965-10-10 San Diego Eight miles east of Dulzura Comment
  UCSB37814  Laennecia coulteri Roos, John 1965-10-10 San Diego Otay Lake Comment
  UCSB42208  Hedypnois cretica Roos, John 1956-5-5 San Diego Marlborough and Adams Comment
Read comments
May 6 2015
  UCSB51399  Chloris gayana Roos, John 1965-10-10 San Diego Along State Highway 395 0.1 mi S of San Diego/Riverside County line Comment
  CLARK-A1528-4986  Quercus kelloggii John C. Roos 1936-5-3 San Diego Comment
  POM251781  Lolium perenne subsp. multiflorum J. C. Roos 1937-6-13 3 San Diego Chula Vista Comment
  POM301605  Dipsacus sativus J. C. Roos 1937-6-14 1244 San Diego Lemon Grove. Comment
  RSA0008404  Ericameria palmeri J. C. Roos 1965-10-9 s.n. San Diego La Mesa. Comment
  RSA0059180  Orobanche fasciculata John C. Roos 1937-6-15 1466 San Diego Public Camp, south of Cuyamaca Lake. Comment
  UCR19196  Navarretia squarrosa John C. Roos 1950-7-20 4863 San Francisco San Francisco Bay Region, San Francisco City College 91 Comment
  CLARK-A1528-2789  Marah fabacea John C. Roos 1950-7-19 4858 San Francisco San Francisco 60 Comment
  CLARK-A1528-1046  Cycloloma atriplicifolium John C. Roos 1938-9-5 1532 San Joaquin Manteca Comment
  UCR27653  Eriogonum parvifolium John C. Roos 1948-8-26 3969 San Luis Obispo 3 miles SE of Morro Bay 14 Comment
  CLARK-A1528-1628  Baccharis pilularis subsp. consanguinea John C. Roos 1937-3-28 1333 Santa Barbara Goleta Comment
  CLARK-A1528-1973  Iva axillaris John C. Roos 1937-7-4 1613 Santa Barbara Cuyama Valley Comment
  CLARK-A1528-2008  Malacothrix glabrata John C. Roos 1937-3-26 2475 Santa Barbara Cuyama Valley Comment
  CLARK-A1528-2902  Quercus lobata John C. Roos 1937-7-1 1928 Santa Barbara Solvang Comment
  CLARK-A1528-3690  Eriogonum parvifolium John C. Roos 1937-7-1 1481 Santa Barbara Gaviota Beach Comment
  CLARK-A1528-1446  Lomatium utriculatum John C. Roos 1937-3-26 Santa Barbara Cuyama Valley Comment
Read comments
Oct 26 2015
  CLARK-A1528-1697  Chaenactis glabriuscula John C. Roos 1937-3-26 2478 Santa Barbara Cuyama Valley Comment
  CLARK-A1528-2877  Trifolium albopurpureum John C. Roos 1937-5-26 1697 Santa Barbara Cuyama Valley Comment
  CLARK-A1528-3020  Pholistoma auritum John C. Roos 1937-3-26 1331 Santa Barbara Comment
  CLARK-A1528-4865  Lepechinia calycina var. wallacei John C. Roos 1937-7-1 2396 Santa Barbara Solvang Comment
  POM263497  Sanicula crassicaulis J. C. Roos 1937-3-26 662 Santa Barbara 30 miles east of Santa Maria, Cuyama Valley. Comment
  UCR25099  Pickeringia montana John C. Roos 1948-8-27 3967 Santa Cruz Santa Cruz Mtns, east of Big Basin Comment
  UCR31737  Ericameria arborescens John C. Roos 1948-8-27 3966 Santa Cruz Santa Cruz Mtns, east of Big Basin Comment
  SD142744  Trifolium productum J. C. Roos 1948-8-31 3926 Shasta Castle Crag, along stream bank Comment
  UCR26232  Claytonia sibirica John C. Roos 1948-9-1 3982 Siskiyou high ridge SW of Etna Comment
  UCR30486  Penstemon anguineus John C. Roos 1948-9-1 3945 Siskiyou 10 mi. SW of Etna Comment
  UCR30818  Pterospora andromedea Lucille Roos 1965-8-10 s.n. Siskiyou Klamath National Forest, Bear Lake, Marble Mountains 1473 Comment
  UCR31684  Eriogonum nudum var. pubiflorum John C. Roos 1948-9-2 3976 Siskiyou Fort Jones 915 Comment
  UCSB37839  Brickellia greenei Roos, John 1948-9-2 Siskiyou 5 miles S.W. of Yreka Comment
  RSA44887  Penstemon roezlii J. C. Roos 1948-9-2 3947 Siskiyou 6 miles SW of Yreka. Comment
  RSA44889  Helianthus bolanderi J. C. Roos 1948-9-2 3977 Siskiyou Fort Jones. 915 Comment
  CAS-BOT-BC344550  Madia exigua J. C. Roos 1957-7-2 6649 Sonoma Miller Ridge Comment
  CLARK-A1528-3216  Lythrum hyssopifolia John C. Roos 1938-6-19 Sonoma Novato Comment
  OBI36027  Navarretia squarrosa John C. Roos 1950-7-22 4878 Sonoma 2 miles east of Duncan Mills 61 Comment
  UCR19522  Datura stramonium var. tatula John C. Roos 1948-8-28 3987 Sonoma North Coast Ranges, Healdsburg 33 Comment
  UCR24386  Whipplea modesta John C. Roos 1957-7-2 6650 Sonoma Miller Ridge Comment
  UCR25306  Glyceria elata John C. Roos 1955-7-2 6643 Sonoma MIller Ridge. Comment
  UCR27417  Dichanthelium acuminatum subsp. thermale John C. Roos, L. Roos 1956-9-1 6598 Sonoma North Coast Range, The Geysers 549 Comment
  CLARK-A1528-2182  Carthamus tinctorius John C. Roos, Lucille Roos 1956-9-2 6599 Sonoma Healdsburg Comment
  RSA301700  Anthoxanthum odoratum A. R. Roos 1938-6-20 1524 Sonoma field between Santa Rosa and Sonoma Comment
  RSA662528  Datura stramonium J. C. Roos 1948-8-28 3987 Sonoma Healdsburg. Comment
  CLARK-A1528-3200  Veratrum californicum John C. Roos 1968-9-21 Tulare Fish Creek Meadows 2590 Comment
  UCSB42158  Quercus wislizeni var. wislizeni Roos, John 1965-8-21 Tulare Middle fork of the Kaweah River, west of Sequoia National Park Comment
  UCSB37775  Lessingia leptoclada Roos, John 1965-8-21 Tulare Kaweah River Canyon, west of Sequoia Natl. Park 609 Comment
  UCR25097  Wyethia mollis John C. Roos 1948-9-7 4007 Tuolumne Sierra Nevada Mtns, Yosemite National Park, NE of Tuolumne Meadows 2744 Comment
  UCR30533  Calamagrostis muiriana John C. Roos 1948-9-7 4011 Tuolumne Sierra Nevada Mtns., Yosemite National Park, Tuolumne Meadows 2622 Comment
Read comments
Aug 26 2011
  GH341038  Tridens muticus J. C. Roos 1955-5-13 6339 Unknown west base Last Chance Mts., east of Eureka Valley sand dunes. 1219 Comment
  GH361382  Achnatherum aridum J. C. Roos 1955-5-13 6346 Unknown west base Last Chance Mts., east of the Eureka Valley sand dunes. 1280 Comment
  GH364971  Malosma laurina J. C. Roos & L. Roos 1954-7-10 6191 Unknown north side of Pigeon Pass, Box Springs Mts. 487 Comment
  GH365149  Elymus X hansenii J. C. Roos & A. R. Roos 1953-8-13 6016 Unknown Crest of Inyo Mts. 3 miles east of Badger Flat. 3230 Comment
  GH365880  Cordylanthus tecopensis J. C. Roos & L. Roos 1954-9-15 6243 Unknown between Tecopa and Tecopa Hot Springs. 426 Comment
  GH366329  Astragalus lentiginosus var. micans J. C. Roos 1955-5-13 6354 Unknown SE end Eureka Valley 929 Comment
  GH369311  Trifolium andersonii subsp. monoense J. C. Roos & L. Roos 1951-8-8 5110 Unknown North rim Reed Flat, White Mts. 3169 Comment
  GH376344  Atriplex confertifolia J. C. Roos & A. R. Roos 1953-8-10 5978 Unknown Mazourka Canyon, Inyo Mts. 2438 Comment
  GH379316  Draba oligosperma J. C. Roos & L. Roos 1951-8-10 5151 Unknown 1 miles SE of White Mtn. Peak, White Mts. 4023 Comment
  GH379922  Stanleya pinnata subsp. inyoensis J. C. Roos 1955-5-13 6366 Unknown west side Eureka Valley at mouth of Marble Canyon 1036 Comment
  GH384941  Frasera puberulenta J. C. Roos & L. Roos 1952-7-26 5824 Unknown east side Reed Flat at head of Birch Creek, White Mts. 3048 Comment
  GH386465  Brickellia atractyloides var. arguta J. C. Roos 1955-5-13 6337 Unknown west base Last Chance Mts. east of Eureka Valley sand dunes 1219 Comment
  GH387453  Achnatherum X bloomeri J. C. Roos & A. R. Roos 1953-8-13 6014 Unknown Crest of Inyo Mts. 3 miles east of Badger Flat 3169 Comment
  GH417445  Ericameria parryi var. aspera J. C. Roos & L. Roos 1951-8-8 5114 Unknown southeast rim Reed Flat, White Mts. 3078 Comment
  GH417918  Hazardia brickellioides J. C. Roos & A. R. Roos 1955-8-23 6530 Unknown West base Last Chance Mts. east of Eureka Valley sand dunes 1219 Comment
  GH427880  Tetradymia argyraea J. C. Roos & A. R. Roos 1950-8-5 4903 Unknown Coliseum Mine, Clark Mts., eastern Mohave Desert 1706 Comment
  GH443026  Chaetadelpha wheeleri J. C. Roos 1955-5-13 6357 Unknown southeast end Eureka Valley 975 Comment
  GH422039  Streptanthus cordatus J. C. Roos & L. Roos 1952-7-27 5835 Unknown S.E. rim Reed Flat, Whtie Mts. 3139 Comment
  CLARK-A1528-3294  Camissonia boothii subsp. decorticans John C. Roos 1937-6-30 2394 Ventura Comment
  CLARK-A1528-4597  Echinochloa crus-galli John C. Roos 1937-6-7 1427 Ventura Fillmore Comment
  RSA659186  Eriogonum crocatum J. C. Roos 1958-5-22 s.n. Ventura Conejo grade summit on N. base of Santa Monica Mtns. Comment
  UCR23253  Dudleya blochmaniae subsp. blochmaniae John C. Roos 1958-5-22 s.n. Ventura Western Transverse Range; Santa Monica Mtns., Conejo Grade, north base of the Santa Monica Mtns. Comment
  UCR24159  Calochortus catalinae John C. Roos 1956-4-8 6573 Ventura Western Transverse Range, Potrero Valley; north slope of Boney Mountain Comment
  UCR24315  Eriogonum crocatum John C. Roos 1958-5-22 s.n. Ventura Western Transverse Range; Santa Monica Mtns., Conejo Grade, north base of the Santa Monica Mtns. Comment
  CLARK-A1528-7707  Paspalum dilatatum John C. Roos 1939-7-3 1519 Yuba Comment



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