Search Results — 2000 specimen records retrieved (1905 records with coordinates)
(That's the default maximum. Contact Jason Alexander for larger data requests.)

Results for search: County=RIVERSIDE; Source=All; Collector=Roos;   

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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/consortium/).
 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
  CAS-BOT-BC106176  Brickellia desertorum John Roos; Lucille Roos 1950-9-30 4995 Riverside Rocky hills midway between Steele Pk. and Elsinore, about 3 miles north of Elsinore. 487 Comment
  CAS-BOT-BC106177  Brickellia desertorum John Roos; Lucille Roos 1950-10-28 5020 Riverside North base Mt. Russell, 1 mile S.E. of Moreno 548 Comment
  CAS-BOT-BC106178  Brickellia desertorum J. C. Roos 1950-11-25 5026 Riverside Dry hills at north end Perris Blvd., Sunnymead. 609 Comment
  CAS-BOT-BC106184  Brickellia desertorum John Roos; Lucille Roos 1950-9-9 4986 Riverside Mt. Rubidoux, Riverside 396 Comment
  CAS-BOT-BC106189  Brickellia desertorum John C. Roos 1950-10-15 5009 Riverside Dry Morongo Canyon about 1 mile south of Riverside-San Bernardiino County line. 609 Comment
  CAS-BOT-BC106190  Brickellia desertorum John Roos; Lucille Roos 1950-10-14 5006 Riverside East end Jurupa Hills near corner of Alta and Canal Sts., West Riverside 304 Comment
  CAS-BOT-BC106191  Brickellia desertorum John Roos; Lucille Roos 1950-9-9 4986 Riverside Mt. Rubidoux, Riverside 396 Comment
  CAS-BOT-BC114416  Cyperus erythrorhizos John C. Roos 1951-9-25 5249 Riverside Common in mud at edge of lake, Fairmount Park. 259 Comment
  CAS-BOT-BC131186  Encelia californica John C. Roos 1952-4-16 5557 Riverside Pigeon Pass, Box Springs Mts. 396 Comment
  CAS-BOT-BC132193  Brodiaea filifolia John C. Roos 1952-5-14 5667 Riverside San Jacinto River bottom 1 mile east of Perris 426 Comment
  CAS-BOT-BC137511  Aristida purpurea var. purpurea J. C. Roos 1965-9-26 s.n. Riverside Palm Springs. 121 Comment
  CAS-BOT-BC137513  Aristida purpurea var. purpurea J. C. Roos 1966-4-29 s.n. Riverside Between March AFB and Lakeview. Comment
  CAS-BOT-BC137514  Aristida purpurea var. purpurea J. C. Roos 1965-6-23 s.n. Riverside Lost Palms Canyon, Eagle Mountains. 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-BC145587  Bouteloua aristidoides J. C. Roos 1965-9-5 s.n. Riverside Desert Center. Comment
  CAS-BOT-BC145605  Bouteloua barbata var. barbata J. C. Roos 1965-9-5 s.n. Riverside 18 miles west of Blythe. Comment
  CAS-BOT-BC147178  Rubus parviflorus J. C. Roos 1965-7-3 s.n. Riverside Dark Canyon, San Jacinto Mtns. Comment
  CAS-BOT-BC149442  Bromus berteroanus John Roos; Lucille Roos 1953-3-21 5909 Riverside Mouth of Andreas Canyon south of Palm Springs. 274 Comment
  CAS-BOT-BC149443  Bromus berteroanus John Roos; Lucille Roos 1953-3-21 5909 Riverside Mouth of Andreas Canyon south of Palm Springs. 274 Comment
  CAS-BOT-BC150870  Diplacus puniceus John C. Roos 1952-5-14 5665 Riverside Hills 2 miles northwest of Perris 502 Comment
  CAS-BOT-BC156282  Bromus catharticus A. R. Roos 1937-11-13 s.n. Riverside Riverside. 243 Comment
  CAS-BOT-BC167364  Fagonia laevis J. C. Roos 1966-3-26 s.n. Riverside 2 miles S.E. of Desert Center 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-BC170585  Atriplex J. C. Roos 1965-10-17 s.n. Riverside 20 miles west of Blythe on the roadside. Comment
  CAS-BOT-BC178071  Astragalus nuttallianus J. C. Roos 1958-3-15 s.n. Riverside 3 miles S.E. of Desert Center, in the Chuckwalla Mtns. 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-BC184868  Chloris virgata John C. Roos 1952-9-3 5897 Riverside Riverside. At Citrus Experiment Station. 304 Comment
  CAS-BOT-BC186906  Astragalus insularis var. harwoodii J. C. Roos 1958-3-15 s.n. Riverside Chuckwalla Mtns., 3 miles SE of Desert Center Comment
  CAS-BOT-BC190129  Crypsis vaginiflora John C. Roos 1952-6-4 5735 Riverside San Jacinto river bottomland 1.5 mile southeast of Perris. 426 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-BC199560  Tridens muticus var. muticus J. C. Roos 1966-11-12 s.n. Riverside Spring Tank, Chuckwalla Mtns. Comment
  CAS-BOT-BC204486  Eragrostis cilianensis J. C. Roos 1965-7-7 s.n. Riverside San Jacinto Comment
  CAS-BOT-BC206920  Euonymus occidentalis J. C. Roos 1965-7-3 s.n. Riverside Dark Canyon, San Jacinto Mtns. Comment
  CAS-BOT-BC207045  Bernardia incana John C. Roos 1950-12-2 5027 Riverside Monson Canyon, Eagle Mts. 1066 Comment
  CAS-BOT-BC221837  Eleusine indica J. C. Roos; E. C. Jaeger 1952-10-8 5899 Riverside Riverside 259 Comment
  CAS-BOT-BC223695  Frankenia salina J. C. Roos 1965-6-30 s.n. Riverside Perris Comment
  CAS-BOT-BC226136  Salvia greatae J. C. Roos 1958-3-29 s.n. Riverside In Salt Creek Wash, 3 miles N. of Coachella Canal on E. base of Orocopia Mtns. 304 Comment
  CAS-BOT-BC231412  Lycium andersonii J. C. Roos 1966-2-12 s.n. Riverside 2 miles east of Desert Center Comment
  CAS-BOT-BC233729  Portulaca halimoides John Roos; Lucille Roos 1952-10-18 5900 Riverside Hidden Valley Campground, Little San Bernardino Mts. 1219 Comment
  CAS-BOT-BC235462  Sporobolus indicus J. C. Roos 1965-11-4 s.n. Riverside Fairmont Park, Riverside Comment
  CAS-BOT-BC235463  Sporobolus indicus John Roos; Lucille Roos 1951-9-25 5277 Riverside Fairmont Park, Riverside 259 Comment
  CAS-BOT-BC240159  Setaria verticillata John C. Roos 1952-5-14 5660 Riverside Corner Iowa Ave. and 8th Street east of Riverside 304 Comment
  CAS-BOT-BC266539  Githopsis diffusa John Roos; Lucille Roos 1952-5-24 5710 Riverside N of Moreno 502 Comment
  CAS-BOT-BC269427  Melica californica J. C. Roos 1950-4-22 4754 Riverside The summit of Reche Canyon. Steep West slope, 0.5 miles N.E. of the summit 792 Comment
  CAS-BOT-BC274183  Pappostipa speciosa J. C. Roos 1965-6-13 s.n. Riverside East of Hemet Comment
  CAS-BOT-BC282997  Eriochloa lemmonii A. R. Roos 1937-11-28 s.n. Riverside East Washington St., Riverside Comment
  CAS-BOT-BC289173  Hilaria rigida J. C. Roos 1965-9-5 s.n. Riverside 18 miles w. of Blythe 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-BC310923  Heterotheca villosa J. C. Roos 1965-9-16 s.n. Riverside On State St. near Florida St., Hemet Comment
  CAS-BOT-BC326768  Peucephyllum schottii J. C. Roos 1966-2-5 s.n. Riverside Pushawalla Wash near 1000 Palms, Indio Hills Comment
  CAS-BOT-BC345425  Malacothrix clevelandii John Roos; Lucille Roos 1954-5-15 6119 Riverside Summit of Reche Canyon 731 Comment
  CAS-BOT-BC365818  Soliva sessilis John Roos; Lucille Roos 1953-5-9 5916 Riverside Fairmount Park, Riverside 259 Comment
  CAS-BOT-BC365819  Soliva sessilis John Roos; Lucille Roos 1953-5-9 5916 Riverside Fairmount Park, Riverside 259 Comment
  CAS-BOT-BC384085  Mirabilis laevis var. villosa J. C. Roos 1966-3-26 s.n. Riverside 2 miles S.E. of Desert Center Comment
  CAS-BOT-BC422791  Papaver californicum John Roos; Lucille Roos 1952-5-19 5692 Riverside On hills north of Moreno. 518 Comment
  CAS-BOT-BC434535  Boerhavia triquetra J. C. Roos 1965-9-26 s.n. Riverside Santa Rosa Mtns., above Palm Desert. 701 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
  CAS-BOT-BC98777  Baccharis brachyphylla John C. Roos 1950-12-2 5028 Riverside Monson Canyon, Eagle Mts. 1066 Comment
  CDA2957  Atriplex suberecta J. C. Roos 1965-10-17 Riverside 20 miles west of Blythe. 0 Comment
  CLARK-A1528-1009  Linum lewisii John C. Roos 1947-5-24 3647 Riverside San Jacinto Mountains 1706 Comment
  CLARK-A1528-1026  Eriodictyon crassifolium John C. Roos 1941-5-10 131 Riverside Hemet 670 Comment
  CLARK-A1528-106  Tetragonia tetragonioides John C. Roos 1951-9-25 5288 Riverside Riverside 259 Comment
  CLARK-A1528-1066  Stephanomeria parryi John C. Roos 1943-5-23 2680 Riverside Little San Bernardino Mountains 1523 Comment
  CLARK-A1528-1068  Wyethia ovata John C. Roos 1965-7-22 Riverside San Jacinto Mountains Comment
  CLARK-A1528-108  Amaranthus albus John C. Roos 1951-9-25 5267 Riverside Riverside 259 Comment
  CLARK-A1528-1096  Gutierrezia bracteata John C. Roos 1940-9-2 222 Riverside Jackrabbit Trail 609 Comment
  CLARK-A1528-1121  Plagiobothrys canescens John C. Roos 1941-3-22 218 Riverside Reche Canyon 609 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-A1528-1169  Helianthemum scoparium John C. Roos 1947-5-24 3642 Riverside San Jacinto Mountains 1158 Comment
  CLARK-A1528-1171  Cucurbita palmata John C. Roos 1948-5-15 3830 Riverside Eagle Mountains Comment
  CLARK-A1528-1182  Quercus dunnii John C. Roos 1956-9-14 3016 Riverside San Jacinto Mountains 1371 Comment
  CLARK-A1528-1189  Atriplex canescens John C. Roos 1946-9-2 2987 Riverside Moreno Valley Comment
  CLARK-A1528-1203  Petunia parviflora John C. Roos 1937-6-7 514 Riverside Comment
  CLARK-A1528-1209  Solanum xanti var. montanum John C. Roos 1947-5-24 3646 Riverside San Jacinto Mountains 1158 Comment
  CLARK-A1528-1249  Erioneuron pulchellum John C. Roos 10/251946 3146 Riverside Chuckwalla Mountains 365 Comment
  CLARK-A1528-1252  Sporobolus cryptandrus John C. Roos 1946-9-14 3005 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1258  Panicum capillare John C. Roos 1951-9-25 5255 Riverside Riverside 259 Comment
  CLARK-A1528-1263  Aristida californica John C. Roos 1946-9-14 3007 Riverside Dos Palmas Spring 1066 Comment
  CLARK-A1528-1279  Muhlenbergia asperifolia John C. Roos 1946-9-14 3002 Riverside San Jacinto Mountains 1066 Comment
  CLARK-A1528-1317  Dodecatheon clevelandii John C. Roos 1946-12-28 3195 Riverside Reche Canyon 0 Comment
  CLARK-A1528-1326  Salvia mohavensis John C. Roos 1947-11-1 3753 Riverside Lost Palms Canyon Comment
  CLARK-A1528-1345  Berberis nevinii John C. Roos 1949-7-12 3564 Riverside San Timoteo Canyon 457 Comment
  CLARK-A1528-1358  Krameria parvifolia var. imparata John C. Roos 1946-9-14 3006 Riverside San Jacinto Mountains 1066 Comment
  CLARK-A1528-1359  Krameria parvifolia var. glandulosa John C. Roos 1948-5-15 3857 Riverside Eagle Mountains Comment
  CLARK-A1528-1375  Acer negundo subsp. californicum John C. Roos 1952-6-25 5790 Riverside Fairmont Park Comment
  CLARK-A1528-1381  Tetragonia tetragonioides John C. Roos 1951-9-25 5288 Riverside Riverside 259 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
Read comments
Jun 24 2014
  CLARK-A1528-1390  Amaranthus albus John C. Roos 1951-9-25 5267 Riverside Riverside 259 Comment
  CLARK-A1528-1393  Amaranthus californicus John C. Roos 1937-8-19 2020 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1395  Amaranthus fimbriatus John C. Roos 1963-10-23 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-1411  Rhus integrifolia John C. Roos 1950-2-18 4707 Riverside Box Springs Mountains 774 Comment
  CLARK-A1528-1414  Rhus laurina John C. Roos 1954-7-10 6191 Riverside Box Springs Mountains 487 Comment
  CLARK-A1528-1417  Toxicodendron diversilobum John C. Roos 1952-4-28 5589 Riverside Riverside Comment
  CLARK-A1528-1418  Apiastrum angustifolium John C. Roos 1938-3-28 728 Riverside La Sierra Comment
  CLARK-A1528-1420  Apiastrum angustifolium John C. Roos 1943-4-28 2629 Riverside Comment
Read comments
Mar 22 2014
  CLARK-A1528-1422  Apiastrum angustifolium John C. Roos 1937-3-24 1340 Riverside Pigeon Pass Comment
  CLARK-A1528-1424  Apium leptophyllum John C. Roos 1953-5-9 5917 Riverside Riverside 259 Comment
  CLARK-A1528-1432  Cymopterus panamintensis var. acutifolius John C. Roos 1948-5-15 3842 Riverside Eagle Mountains Comment
  CLARK-A1528-1445  Lomatium utriculatum John C. Roos 1937-3-24 1341 Riverside Pigeon Pass Comment
  CLARK-A1528-1447  Lomatium utriculatum John C. Roos 1952-2-29 5365 Riverside Reche Canyon 426 Comment
  CLARK-A1528-1453  Sanicula tuberosa John C. Roos 1950-4-22 4755 Riverside Reche Canyon 761 Comment
  CLARK-A1528-1454  Sanicula tuberosa John C. Roos 1954-4-17 6068 Riverside Reche Canyon 670 Comment
  CLARK-A1528-1460  Asclepias albicans John C. Roos 1947-2-14 3253 Riverside Hayfield Comment
  CLARK-A1528-1463  Asclepias fascicularis John C. Roos 1941-10-24 5333 Riverside Riverside 228 Comment
  CLARK-A1528-1464  Asclepias subulata John C. Roos 1946-12-7 3179 Riverside Pushawalla Wash Comment
  CLARK-A1528-1465  Asclepias subulata John C. Roos 1937-8-20 1226 Riverside Colorado Desert Comment
  CLARK-A1528-1468  Sarcostemma cynanchoides John C. Roos 1940-8-20 906 Riverside Reche Canyon Comment
  CLARK-A1528-1495  Nolina bigelovii John C. Roos 1982-5-15 3852 Riverside Eagle Mountains Comment
  CLARK-A1528-1496  Nolina parryi John C. Roos 1942-5-2 1051 Riverside Joshua Tree National Monument 1371 Comment
  CLARK-A1528-1497  Nolina parryi subsp. wolfii John C. Roos, Lucille Roos 1952-10-18 5904 Riverside Little San Bernardino Mountains 1219 Comment
  CLARK-A1528-1500  Yucca schidigera John C. Roos, Lucille Roos 1952-5-19 5686 Riverside San Timoteo Canyon 487 Comment
  CLARK-A1528-1501  Washingtonia filifera John C. Roos 1943-12-19 2762 Riverside Pushawalla Canyon Comment
  CLARK-A1528-1511  Allium peninsulare John C. Roos 1948-5-22 3865 Riverside Reche Canyon Comment
  CLARK-A1528-1513  Allium praecox John C. Roos 1952-4-2 5468 Riverside Box Springs 426 Comment
  CLARK-A1528-152  Artemisia californica John C. Roos 1951-10-27 5347 Riverside Riverside 304 Comment
  CLARK-A1528-1522  Brodiaea filifolia John C. Roos 1952-5-14 5667 Riverside San Jacinto River 426 Comment
  CLARK-A1528-1523  Dichelostemma pulchellum John C. Roos 1952-2-29 5380 Riverside Pigeon Pass Comment
  CLARK-A1528-1529  Acamptopappus shockleyi John C. Roos 1937-4-18 2483 Riverside San Jacinto Mountains Comment
Read comments
Oct 2 2018
  CLARK-A1528-1531  Agoseris retrorsa John C. Roos 1937-4-18 1362 Riverside Cabazon Comment
Read comments
Jun 10 2015
  CLARK-A1528-1533  Ambrosia acanthicarpa John C. Roos 1965-9-26 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1537  Ambrosia ilicifolia John C. Roos 1958-3-15 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-154  Artemisia douglasiana John C. Roos 1951-9-25 5281 Riverside Riverside 259 Comment
  CLARK-A1528-1559  Artemisia californica John C. Roos 1951-10-27 5347 Riverside Riverside 304 Comment
  CLARK-A1528-1572  Artemisia dracunculus John C. Roos 1937-8-17 1615 Riverside San Jacinto Comment
  CLARK-A1528-158  Aster exilis John C. Roos 1951-9-25 5275 Riverside Riverside 259 Comment
  CLARK-A1528-159  Aster hesperius John C. Roos 1951-9-25 5258 Riverside Riverside 259 Comment
  CLARK-A1528-1605  Aster chilensis John C. Roos 1946-9-14 3014 Riverside San Jacinto Mountains 1371 Comment
  CLARK-A1528-1610  Aster hesperius John C. Roos 1951-9-25 5258 Riverside Fairmont Park 259 Comment
  CLARK-A1528-1616  Aster spinosus John C. Roos 1965-7-5 Riverside Blythe Comment
  CLARK-A1528-1617  Atrichoseris platyphylla John C. Roos 1966-3-26 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-1621  Baccharis emoryi John C. Roos 1951-9-25 5285 Riverside Fairmont Park 259 Comment
  CLARK-A1528-1622  Baccharis emoryi John C. Roos 1937-9-12 Riverside Santa Ana River Comment
  CLARK-A1528-1623  Baccharis emoryi John C. Roos 1948-11-6 4077 Riverside Box Springs Mountains Comment
  CLARK-A1528-1624  Baccharis emoryi John C. Roos 1965-10-7 Riverside Fairmont Park Comment
  CLARK-A1528-1625  Baccharis emoryi John C. Roos 1937-9-12 Riverside Santa Ana River Comment
  CLARK-A1528-1626  Baccharis glutinosa John C. Roos 1949-9-21 4664 Riverside Reche Canyon 457 Comment
  CLARK-A1528-1632  Baccharis sergiloides John C. Roos 1937-8-20 2500 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1638  Baccharis glutinosa John C. Roos 1951-10-24 5346 Riverside Santa Ana River 259 Comment
  CLARK-A1528-164  Baccharis douglasii John C. Roos 1951-9-25 5284 Riverside Riverside 259 Comment
  CLARK-A1528-1641  Bahia dissecta John C. Roos 1946-8-27 2923 Riverside Santa Rosa Mountains 2285 Comment
  CLARK-A1528-1647  Bebbia juncea John C. Roos 1951-10-19 5329 Riverside San Jacinto Valley 457 Comment
  CLARK-A1528-1648  Bebbia juncea John C. Roos 1995-6-19 Riverside Santa Ana 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-A1528-1655  Brickellia arguta John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-1656  Brickellia arguta John C. Roos 1948-5-1 3813 Riverside Whitewater Comment
  CLARK-A1528-1661  Brickellia californica John C. Roos 1951-10-19 5324 Riverside Jackrabbit Trail 609 Comment
  CLARK-A1528-1663  Brickellia desertorum John C. Roos 1949-9-21 4665 Riverside Reche Canyon 457 Comment
  CLARK-A1528-1664  Brickellia desertorum John C. Roos 1949-9-17 4662 Riverside Whitewater Canyon 609 Comment
  CLARK-A1528-1667  Brickellia desertorum John C. Roos 1946-9-14 3023 Riverside San Jacinto Mountains 1097 Comment
  CLARK-A1528-1668  Brickellia desertorum John C. Roos 1950-9-30 4996 Riverside Riverside 396 Comment
  CLARK-A1528-1669  Brickellia desertorum John C. Roos 1950-9-30 4994 Riverside Box Springs Mountains 457 Comment
  CLARK-A1528-1671  Brickellia desertorum John C. Roos 1947-11-1 3752 Riverside Eagle Mountains Comment
  CLARK-A1528-1673  Brickellia incana John C. Roos 1947-11-1 3751 Riverside Eagle Mountains Comment
  CLARK-A1528-1675  Brickellia incana John C. Roos 1965-6-23 Riverside Lost Palms Wash Comment
  CLARK-A1528-1691  Carthamus tinctorius John C. Roos 1965-7-7 Riverside Beaumont Comment
  CLARK-A1528-1696  Chaenactis fremontii John C. Roos 1937-4-18 2461 Riverside Comment
  CLARK-A1528-171  Bidens frondosa John C. Roos 1951-9-25 5265 Riverside Riverside 259 Comment
  CLARK-A1528-172  Bidens laevis John C. Roos 1951-9-25 5266 Riverside Riverside 259 Comment
  CLARK-A1528-1728  Chrysothamnus paniculatus John C. Roos 1943-10-17 2736 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-1731  Chrysothamnus paniculatus John C. Roos 1965-11-6 Riverside Whitewater 304 Comment
  CLARK-A1528-1732  Chrysothamnus paniculatus John C. Roos 1943-10-17 2736 Riverside Little San Bernardino Mountains 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-A1528-1768  Chrysopsis villosa John C. Roos 1965-9-16 Riverside Hemet Comment
  CLARK-A1528-1769  Chrysopsis villosa John C. Roos 1951-9-25 5299 Riverside Santa Ana River 259 Comment
  CLARK-A1528-1770  Chrysopsis villosa John C. Roos 1937-8-19 2499 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1782  Corethrogyne filaginifolia var. bernardina John C. Roos 1951-9-25 5272 Riverside Riverside 259 Comment
  CLARK-A1528-1783  Corethrogyne filaginifolia John C. Roos 1937-8-17 1217 Riverside Idyllwild Comment
  CLARK-A1528-1788  Corethrogyne filaginifolia John C. Roos 1965-8-19 Riverside Beaumont Comment
  CLARK-A1528-1795  Dicoria canescens John C. Roos 1943-10-17 2744 Riverside Dry Morongo Wash Comment
  CLARK-A1528-180  Centaurea solstitialis John C. Roos 1951-9-25 5253 Riverside Riverside Comment
  CLARK-A1528-1805  Eclipta alba John C. Roos 1951-9-22 5233 Riverside Riverside Comment
  CLARK-A1528-1806  Encelia californica John C. Roos 1952-4-16 5557 Riverside Box Springs Mountains 396 Comment
  CLARK-A1528-1810  Encelia virginensis John C. Roos 1943-5-23 2666 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-1811  Encelia virginensis subsp. actonii John C. Roos 1941-8-2 84 Riverside 609 Comment
  CLARK-A1528-1824  Erigeron foliosus John C. Roos 1965-6-19 Riverside Santa Ana Mountains Comment
  CLARK-A1528-1839  Eriophyllum multicaule John C. Roos 1940-5-4 882 Riverside Reche Canyon Comment
  CLARK-A1528-1841  Eriophyllum multicaule John C. Roos 1952-5-19 5960 Riverside Moreno 502 Comment
  CLARK-A1528-1843  Filago depressa John C. Roos 1952-4-23 5580 Riverside Box Springs Mountain 457 Comment
  CLARK-A1528-1847  Gnaphalium bicolor John C. Roos 1952-2-29 5374 Riverside Reche Canyon 548 Comment
  CLARK-A1528-1851  Gnaphalium californicum John C. Roos 1952-6-8 5750 Riverside Reche Canyon 548 Comment
  CLARK-A1528-1856  Gnaphalium microcephalum John C. Roos 1937-8-19 2501 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1861  Gutierrezia bracteata John C. Roos 1965-6-21 Riverside Comment
  CLARK-A1528-1862  Gutierrezia bracteata John C. Roos 1965-9-26 Riverside Palm Springs Station Comment
  CLARK-A1528-1863  Gutierrezia bracteata John C. Roos 1937-7-11 1506 Riverside Reche Canyon Comment
  CLARK-A1528-1881  Haplopappus cuneatus John C. Roos 1942-10-24 2575 Riverside Joshua Tree National Park Comment
  CLARK-A1528-1884  Haplopappus cooperi John C. Roos 1943-5-22 2648 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-1891  Haplopappus linearifolius John C. Roos 1952-4-2 5466 Riverside Box Springs Canyon 426 Comment
  CLARK-A1528-1903  Haplopappus pinifolius John C. Roos 1952-8-27 5894 Riverside Pigeon Pass 487 Comment
  CLARK-A1528-1904  Haplopappus squarrosus John C. Roos 1965-10-7 Riverside Comment
  CLARK-A1528-1905  Haplopappus squarrosus John C. Roos 1952-8-27 5890 Riverside Reche Canyon 457 Comment
  CLARK-A1528-1912  Helianthus niveus subsp. canescens John C. Roos 1962-4-3 Riverside Palm Springs Municipal Airport 121 Comment
  CLARK-A1528-1913  Helianthus niveus subsp. canescens John C. Roos 1965-4-28 Riverside Palm Springs Comment
  CLARK-A1528-1919  Hemizonia kelloggii John C. Roos 1943-7-15 2731 Riverside San Timoteo Canyon Comment
  CLARK-A1528-1920  Hemizonia kelloggii John C. Roos 1965-6-27 Riverside Reche Canyon Comment
  CLARK-A1528-1921  Hemizonia kelloggii John C. Roos 1952-5-26 5713 Riverside Reche Canyon 457 Comment
  CLARK-A1528-1923  Hemizonia pungens John C. Roos 1952-5-14 5670 Riverside San Jacinto River 426 Comment
  CLARK-A1528-1924  Hemizonia pungens John C. Roos 1937-5-10 2452 Riverside Lake Elsinore Comment
  CLARK-A1528-1930  Heterotheca subaxillaris John C. Roos 1965-9-26 Riverside Indio Comment
  CLARK-A1528-1949  Hulsea heterochroma John C. Roos 1947-3-15 3325 Riverside San Jacinto Mountains 1066 Comment
  CLARK-A1528-1950  Hulsea heterochroma John C. Roos 1965-7-22 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1952  Hulsea vestita subsp. callicarpha John C. Roos 1946-8-27 2783 Riverside Santa Rosa Mountains 2407 Comment
  CLARK-A1528-1959  Hymenoclea salsola John C. Roos 1947-2-15 3246 Riverside Eagle Mountains Comment
  CLARK-A1528-1976  Lactuca serriola John C. Roos 1965-10-7 Riverside Beaumont Comment
  CLARK-A1528-1978  Lasthenia chrysostoma John C. Roos 1952-5-21 5706 Riverside San Jacinto River 426 Comment
  CLARK-A1528-1979  Lasthenia chrysostoma John C. Roos 1952-4-2 5459 Riverside Box Springs 487 Comment
  CLARK-A1528-1980  Layia platyglossa John C. Roos 1941-5-10 130 Riverside San Jacinto Mountains Comment
Read comments
Jan 3 2018
  CLARK-A1528-1981  Layia platyglossa John C. Roos 1940-5-20 905 Riverside Reche Canyon Comment
  CLARK-A1528-1983  Layia ziegleri John C. Roos 1965-6-13 Riverside San Jacinto Mountains Comment
  CLARK-A1528-1984  Layia platyglossa John C. Roos 1952-4-13 5525 Riverside Box Springs Mountains 487 Comment
  CLARK-A1528-1987  Lepidospartum squamatum var. palmeri John C. Roos 1942-10-23 2572 Riverside Morongo Valley 518 Comment
  CLARK-A1528-1989  Lessingia glandulifera John C. Roos 1937-8-17 1216 Riverside Comment
  CLARK-A1528-2001  Machaeranthera cognata John C. Roos 1947-1-2 3226 Riverside Painted Canyon Comment
  CLARK-A1528-2003  Machaeranthera tortifolia John C. Roos 1949-4-10 4225 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2007  Malacothrix clevelandii John C. Roos 1954-5-15 6119 Riverside Reche Canyon 731 Comment
  CLARK-A1528-2011  Matricaria matricarioides John C. Roos 1966-3-24 Riverside Winchester Comment
  CLARK-A1528-2013  Microseris douglasii John C. Roos 1950-3-18 4711 Riverside 457 Comment
  CLARK-A1528-2019  Pectis papposa John C. Roos 1937-8-22 1212 Riverside Comment
  CLARK-A1528-202  Eclipta alba John C. Roos 1951-9-22 5233 Riverside Riverside 243 Comment
  CLARK-A1528-2021  Pectis papposa John C. Roos 1965-9-5 Riverside Chuckwalla Valley 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-A1528-2075  Rafinesquia neomexicana John C. Roos 1947-3-1 3304 Riverside Garnet Comment
  CLARK-A1528-2093  Senecio vulgaris John C. Roos 1967-2-7 Riverside Hemet Comment
  CLARK-A1528-2098  Solidago californica John C. Roos 1952-8-27 5892 Riverside Reche Canyon 457 Comment
  CLARK-A1528-2103  Soliva sessilis John C. Roos 1953-5-9 5916 Riverside Riverside 259 Comment
  CLARK-A1528-2110  Stephanomeria virgata John C. Roos 1965-10-7 Riverside Beaumont Comment
  CLARK-A1528-2111  Stylocline filaginea John C. Roos 1954-5-11 6118 Riverside Reche Canyon Comment
  CLARK-A1528-2113  Stylocline micropoides John C. Roos 1949-4-11 4234 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2122  Tetradymia comosa John C. Roos 1943-7-15 2732 Riverside San Timoteo Canyon Comment
  CLARK-A1528-2125  Tetradymia spinosa var. longispina John C. Roos 1943-5-23 2671 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-2128  Trichocoronis wrightii John C. Roos 1937-6-7 2505 Riverside San Jacinto Valley Comment
  CLARK-A1528-2131  Trichoptilium incisum John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2132  Trixis californica John C. Roos 1947-2-15 3251 Riverside Eagle Mountains Comment
  CLARK-A1528-2133  Trixis californica John C. Roos 1942-5-2 1145 B Riverside Joshua Tree National Park Comment
  CLARK-A1528-2137  Viguiera deltoidea var. parishii John C. Roos 1965-9-26 Riverside Santa Rosa Mountains 701 Comment
  CLARK-A1528-2138  Viguiera deltoidea var. parishii John C. Roos 1946-11-30 3167 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2139  Viguiera deltoidea var. parishii John C. Roos 1946-9-14 3022 Riverside San Jacinto Mountains 1097 Comment
  CLARK-A1528-2147  Ambrosia ilicifolia John C. Roos 1949-4-10 4230 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2172  Lepidospartum squamatum John C. Roos 1963-11-15 Riverside Coachella Valley upper end of valley, Colorado Desert; in a rocky wash; ; Whitewater 7.5'Q 426 Comment
  CLARK-A1528-2174  Baccharis brachyphylla John C. Roos 1963-10-19 Riverside Whitewater Wash 579 Comment
  CLARK-A1528-2175  Baccharis sergiloides John C. Roos 1946-9-14 3003 Riverside San Jacinto Mountains 1066 Comment
  CLARK-A1528-2189  Helianthus canus John C. Roos 1952-3-27 5423 Riverside Palm Springs 121 Comment
  CLARK-A1528-2205  Coldenia palmeri John C. Roos 1947-2-1 3225 Riverside Painted Canyon Comment
  CLARK-A1528-2207  Coldenia palmeri John C. Roos 1947-3-1 3299 Riverside Coachella Valley Comment
  CLARK-A1528-2208  Coldenia plicata John C. Roos 1965-6-23 Riverside Comment
  CLARK-A1528-2209  Cryptantha angustifolia John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2216  Cryptantha intermedia John C. Roos 1950-4-22 4746 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-2217  Cryptantha intermedia John C. Roos 1947-3-21 3366 Riverside Reche Canyon Comment
  CLARK-A1528-2220  Cryptantha pterocarya John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2222  Cryptantha micrantha subsp. lepida John C. Roos 1947-5-24 3648 Riverside San Jacinto Mountains Comment
  CLARK-A1528-2227  Cryptantha muricata var. jonesii John C. Roos 1950-4-15 4732 Riverside Reche Canyon 792 Comment
  CLARK-A1528-2236  Cryptantha utahensis John C. Roos 1948-5-1 3816 Riverside Whitewater 548 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-A1528-2251  Pectocarya penicillata John C. Roos 1966-4-5 Riverside Winchester Comment
  CLARK-A1528-2258  Plagiobothrys californicus John C. Roos 1941-4-19 Riverside Reche Canyon Comment
  CLARK-A1528-2259  Plagiobothrys californicus John C. Roos 1952-2-29 5368 Riverside Reche Canyon 457 Comment
  CLARK-A1528-2260  Plagiobothrys canescens John C. Roos 1966-3-24 Riverside Winchester Comment
  CLARK-A1528-2261  Plagiobothrys leptocladus John C. Roos 1966-3-24 Riverside Edgemont Comment
  CLARK-A1528-2265  Plagiobothrys tenellus John C. Roos 1947-3-21 3367 Riverside Reche Canyon 365 Comment
  CLARK-A1528-2270  Berberis nevinii John C. Roos 1955-3-5 6237 Riverside Scott's Canyon 426 Comment
  CLARK-A1528-2277  Alnus rhombifolia John C. Roos 1951-9-25 5298 Riverside Riverside 259 Comment
  CLARK-A1528-2280  Chilopsis linearis John C. Roos 1952-6-21 5783 Riverside San Timoteo Canyon Comment
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Oct 22 2014
  CLARK-A1528-2282  Chilopsis linearis John C. Roos 1943-5-23 2669 Riverside Dry Morongo Wash Comment
  CLARK-A1528-229  Haplopappus acradenius subsp. eremophilus John C. Roos 1969-11-10 Riverside Whitewater Comment
  CLARK-A1528-2295  Athysanus pusillus John C. Roos 1947-3-21 3363 Riverside Reche Canyon Comment
  CLARK-A1528-2300  Capsella bursa-pastoris John C. Roos 1966-3-24 Riverside Hemet Comment
  CLARK-A1528-2314  Draba cuneifolia John C. Roos 1958-2-22 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2315  Draba cuneifolia var. integrifolia John C. Roos 1952-2-29 5369 Riverside Reche Canyon 548 Comment
  CLARK-A1528-2318  Lepidium dictyotum John C. Roos 1950-3-18 Riverside La Sierra College Comment
  CLARK-A1528-2319  Lepidium dictyotum John C. Roos 1950-3-18 4712 Riverside 457 Comment
Read comments
Jan 30 2016
  CLARK-A1528-2326  Lepidium nitidum John C. Roos 1937-2-21 1313 Riverside La Sierra Comment
  CLARK-A1528-2330  Lepidium virginicum John C. Roos 1952-4-8 5475 Riverside Riverside 259 Comment
  CLARK-A1528-2336  Rorippa nasturtium-aquaticum John C. Roos 1948-4-24 3795 Riverside Whitewater Comment
  CLARK-A1528-2354  Thysanocarpus curvipes John C. Roos 1937-4-18 2197 Riverside San Jacinto Mountains Comment
  CLARK-A1528-2355  Thysanocarpus laciniatus John C. Roos 1948-5-8 3818 Riverside Whitewater Canyon 548 Comment
  CLARK-A1528-2359  Simmondsia chinensis John C. Roos 1966-3-20 Riverside Eagle Mountains Comment
  CLARK-A1528-2360  Woodwardia fimbriata John C. Roos 1937-4-18 1360 Riverside San Jacinto Mountains Comment
  CLARK-A1528-2361  Opuntia basilaris John C. Roos 1937-4-18 Riverside Snow Creek Comment
  CLARK-A1528-2363  Callitriche marginata John C. Roos 1952-4-16 5540 Riverside Edgemont Comment
  CLARK-A1528-2366  Githopsis specularioides John C. Roos 1952-5-24 5710 Riverside Moreno Comment
  CLARK-A1528-2369  Nemacladus glanduliferus John C. Roos 1966-3-26 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2371  Nemacladus glanduliferus John C. Roos 1966-3-20 Riverside Comment
  CLARK-A1528-2374  Nemacladus longiflorus var. breviflorus John C. Roos 1937-4-18 1795 Riverside Snow Creek Comment
  CLARK-A1528-2386  Isomeris arborea var. angustata John C. Roos 1967-3-25 Riverside Whitewater Canyon 457 Comment
  CLARK-A1528-2394  Isomeris arborea var. angustata John C. Roos 1967-3-25 Riverside Whitewater Canyon 457 Comment
  CLARK-A1528-2411  Sambucus caerulea John C. Roos, Lucille Roos 1951-10-24 5341 Riverside Pedley 243 Comment
  CLARK-A1528-2417  Achyronychia cooperi John C. Roos 1937-4-23 2123 Riverside Garnet Comment
  CLARK-A1528-2435  Caucalis microcarpa John C. Roos 1940-4-20 Riverside Reche Canyon Comment
  CLARK-A1528-2455  Loeflingia squarrosa John C. Roos 1952-5-14 5664 Riverside 487 Comment
  CLARK-A1528-2461  Silene antirrhina John C. Roos 1952-4-28 5590 Riverside Box Springs Mountains 396 Comment
  CLARK-A1528-2463  Silene antirrhina John C. Roos 1941-4-25 177 Riverside Reche Canyon Comment
  CLARK-A1528-2466  Silene laciniata John C. Roos 1965-6-19 Riverside Santa Ana Mountains Comment
  CLARK-A1528-2477  Spergularia macrotheca var. leucantha John C. Roos 1937-5-9 639 Riverside La Sierra University Comment
  CLARK-A1528-2483  Spergularia marina John C. Roos, Lucille Roos 1951-10-24 5337 Riverside Pedley 228 Comment
  CLARK-A1528-2489  Euonymus occidentalis subsp. parishii John C. Roos 1941-8-2 88 Riverside San Jacinto Mountains Comment
  CLARK-A1528-2490  Euonymus occidentalis subsp. parishii John C. Roos 1941-8-2 Riverside San Jacinto Mountains Comment
  CLARK-A1528-2491  Euonymus occidentalis subsp. parishii John C. Roos 1943-8-8 269 Riverside San Jacinto Mountains 1828 Comment
Read comments
Mar 22 2014
  CLARK-A1528-2523  Atriplex lentiformis John C. Roos 1936-9-21 Riverside Indio Comment
  CLARK-A1528-2524  Atriplex lentiformis John C. Roos 1937-8-20 1224 Riverside Coachella Comment
  CLARK-A1528-2546  Atriplex coronata var. notatior John C. Roos 1965-6-30 Riverside Perris 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-A1528-2555  Chenopodium album John C. Roos 1951-9-25 5295 Riverside Riverside 259 Comment
  CLARK-A1528-2561  Chenopodium fremontii John C. Roos 1946-8-27 9212 Riverside Santa Rosa Mountains 2438 Comment
  CLARK-A1528-2578  Cycloloma atriplicifolium John C. Roos 1951-9-25 5300 Riverside Santa Ana River 259 Comment
  CLARK-A1528-2579  Cycloloma atriplicifolium John C. Roos 1965-9-26 Riverside Indio Comment
  CLARK-A1528-2606  Helianthemum scoparium John C. Roos 1965-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-2607  Calystegia macrostegia John C. Roos 1950-4-22 4748 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-2608  Calystegia sepium John C. Roos, Lucille Roos 1952-6-10 5763 Riverside Riverside 259 Comment
  CLARK-A1528-2611  Cressa truxillensis John C. Roos 1937-5-10 2074 Riverside Lake Elsinore Comment
  CLARK-A1528-2617  Crassula aquatica John C. Roos 1952-4-9 5514 Riverside Edgemont 487 Comment
  CLARK-A1528-2618  Crassula erecta John C. Roos 1952-2-29 5373 Riverside Riverside 457 Comment
  CLARK-A1528-2620  Crossosoma bigelovii John C. Roos 1967-3-25 Riverside Whitewater Canyon Comment
  CLARK-A1528-2631  Silene antirrhina John C. Roos 1940-4-20 909 Riverside Reche Canyon Comment
  CLARK-A1528-2642  Eremocarpus setiger John C. Roos 1965-7-27 Riverside Elsinore Comment
  CLARK-A1528-2659  Camissonia ignota John C. Roos 1937-3-24 2186 Riverside Pigeon Pass Comment
  CLARK-A1528-2660  Camissonia hirtella John C. Roos 1937-5-10 2187 Riverside Elsinore Comment
  CLARK-A1528-2662  Cupressus stephensonii John C. Roos 1962-5-19 Riverside Loma Linda Comment
  CLARK-A1528-2669  Juniperus californica John C. Roos 1952-4-16 5541 Riverside Box Springs 457 Comment
  CLARK-A1528-2670  Juniperus californica John C. Roos 1947-2-15 3265 Riverside Eagle Mountain Comment
  CLARK-A1528-2673  Ephedra viridis John C. Roos 1949-4-10 4224 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2685  Rhododendron occidentale John C. Roos 1941-8-2 79 Riverside San Jacinto Mountains Comment
  CLARK-A1528-2689  Croton californicus var. tenuis John C. Roos 1951-9-25 5297 Riverside Santa Ana River 259 Comment
  CLARK-A1528-2692  Ditaxis lanceolata John C. Roos 1946-11-30 3165 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2697  Euphorbia eriantha John C. Roos 1946-10-26 3140 Riverside Chuckwalla Mountains Comment
Read comments
Jan 30 2015
  CLARK-A1528-2705  Euphorbia polycarpa John C. Roos 1965-6-23 Riverside Cactus City Comment
  CLARK-A1528-2710  Euphorbia setiloba John C. Roos 1947-11-1 Riverside Eagle Mountains Comment
  CLARK-A1528-2716  Tetracoccus hallii John C. Roos 1942-5-2 1130 Riverside Joshua Tree National Park Comment
  CLARK-A1528-2723  Amorpha californica John C. Roos 1952-6-13 5767 Riverside Box Springs Mountains 487 Comment
  CLARK-A1528-2727  Astragalus aridus John C. Roos 1949-3-19 4116 Riverside Indio Comment
  CLARK-A1528-2735  Astragalus didymocarpus John C. Roos 1938-4-28 1618 Riverside La Sierra Comment
  CLARK-A1528-2743  Astragalus gambelianus John C. Roos 1952-5-19 5689 Riverside Moreno 487 Comment
  CLARK-A1528-2746  Astragalus insularis var. harwoodii John C. Roos 1949-4-11 4241 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-2761  Astragalus tricarinatus John C. Roos 1948-5-8 3826 Riverside Whitewater Comment
  CLARK-A1528-2767  Dalea emoryi John C. Roos 1966-5-2 Riverside Palm Springs Comment
  CLARK-A1528-2775  Dalea spinosa John C. Roos 1947-2-15 3233 Riverside Eagle Mountains Comment
  CLARK-A1528-2777  Dalea californica John C. Roos 1942-5-1 1150 Riverside Dry Morongo Canyon Comment
  CLARK-A1528-2785  Hoffmannseggia microphylla John C. Roos 1949-3-19 4108 Riverside Mecca Comment
  CLARK-A1528-2786  Brandegea bigelovii John C. Roos 1967-11-18 Riverside Comment
  CLARK-A1528-2791  Allium fimbriatum John C. Roos 1941-5-10 129 Riverside Santa Rosa Mountains Comment
  CLARK-A1528-2800  Lotus heermannii John C. Roos 1952-6-13 5768 Riverside Pigeon Pass 426 Comment
  CLARK-A1528-2806  Lotus strigosus John C. Roos 1952-4-9 5479 Riverside Riverside 259 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-A1528-2810  Lotus subpinnatus John C. Roos 1952-4-9 5478 Riverside Riverside 259 Comment
  CLARK-A1528-2816  Lupinus arizonicus John C. Roos 1947-2-15 3268 Riverside Eagle Mountains Comment
  CLARK-A1528-2817  Lupinus arizonicus John C. Roos 1948-5-15 3847 Riverside Eagle Mountains Comment
  CLARK-A1528-2818  Lupinus bicolor John C. Roos 1966-3-22 Riverside Edgemont Comment
  CLARK-A1528-2819  Lupinus bicolor subsp. microphyllus John C. Roos 1952-4-30 5603 Riverside Edgemont 487 Comment
  CLARK-A1528-2820  Lupinus bicolor subsp. microphyllus John C. Roos 1938-4-4 732 Riverside La Sierra Comment
  CLARK-A1528-2834  Lupinus formosus John C. Roos 1943-5-23 2664 Riverside Little San Bernardino Mountains 1523 Comment
  CLARK-A1528-2839  Lupinus hirsutissimus John C. Roos 1938-4-4 731 Riverside La Sierra Comment
  CLARK-A1528-2840  Lupinus hirsutissimus John C. Roos 1952-4-9 5511 Riverside Riverside 380 Comment
  CLARK-A1528-2850  Lupinus sparsiflorus John C. Roos 1937-4-18 1357 Riverside Cabazon Comment
  CLARK-A1528-2851  Lupinus truncatus John C. Roos 1947-3-15 3326 Riverside Valle Vista Comment
  CLARK-A1528-2853  Lupinus truncatus John C. Roos 1938-4-4 730 Riverside La Sierra Comment
  CLARK-A1528-2854  Lupinus truncatus John C. Roos 1952-4-9 5512 Riverside Riverside 304 Comment
  CLARK-A1528-2856  Medicago lupulina John C. Roos 1952-4-30 5604 Riverside March Air Force Base 487 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-A1528-2863  Olneya tesota John C. Roos 1965-12-4 Riverside Colorado Desert 365 Comment
  CLARK-A1528-2885  Trifolium microcephalum John C. Roos 1952-4-29 5600 Riverside Reche Canyon 457 Comment
  CLARK-A1528-2888  Trifolium tridentatum var. aciculare John C. Roos 1952-4-2 5467 Riverside 426 Comment
  CLARK-A1528-2889  Trifolium tridentatum John C. Roos 1937-4-10 1394 Riverside La Sierra Comment
  CLARK-A1528-2908  Quercus wislizeni var. frutescens John C. Roos 1947-1-4 3196 Riverside Box Springs Mountains 487 Comment
  CLARK-A1528-2914  Quercus wislizeni var. frutescens John C. Roos 1952-4-13 5518 Riverside Box Springs Mountains 518 Comment
  CLARK-A1528-2920  Quercus dumosa John C. Roos 1947-12-13 3765 Riverside Lost Palms Canyon Comment
  CLARK-A1528-2921  Quercus dunnii John C. Roos 1956-9-14 3016 Riverside San Jacinto Mountains 1371 Comment
  CLARK-A1528-2930  Frankenia grandifolia John C. Roos 1965-6-30 Riverside Perris Comment
  CLARK-A1528-2936  Garrya flavescens John C. Roos 1947-3-15 3336 Riverside San Jacinto Mountains 1066 Comment
  CLARK-A1528-2957  Erodium cicutarium John C. Roos 1965-6-30 Riverside Perris Comment
  CLARK-A1528-2959  Erodium moschatum John C. Roos 1952-4-9 5480 Riverside Riverside 259 Comment
  CLARK-A1528-2960  Erodium obtusiplicatum John C. Roos 1966-3-22 Riverside Edgemont Comment
  CLARK-A1528-2965  Emmenanthe penduliflora John C. Roos 1952-4-13 5534 Riverside Box Springs Mountains 396 Comment
  CLARK-A1528-2970  Eriodictyon crassifolium John C. Roos 1965-6-13 Riverside San Jacinto Mountains Comment
  CLARK-A1528-2975  Eucrypta micrantha John C. Roos 1966-3-26 Riverside Comment
  CLARK-A1528-2980  Nama demissa John C. Roos 1947-3-15 3355 Riverside Santa Rosa Mountains 365 Comment
  CLARK-A1528-2986  Nemophila menziesii John C. Roos 1952-3-1 5361 Riverside Reche Canyon 457 Comment
  CLARK-A1528-2987  Nemophila menziesii John C. Roos 1947-3-21 3371 Riverside Reche Canyon Comment
  CLARK-A1528-299  Stephanomeria virgata John C. Roos 1951-9-25 5270 Riverside Riverside 259 Comment
  CLARK-A1528-2990  Phacelia campanularia John C. Roos 1947-2-15 3245 Riverside Eagle Mountains Comment
  CLARK-A1528-2995  Phacelia cicutaria John C. Roos 1965-6-19 Riverside Santa Ana Mountains Comment
  CLARK-A1528-2998  Phacelia crenulata John C. Roos 1949-3-5 4090 Riverside Orocopia Mountains Comment
  CLARK-A1528-3006  Phacelia distans John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3021  Turricula parryi John C. Roos 1946-8-27 2942 Riverside Santa Rosa Mountains 2194 Comment
  CLARK-A1528-3025  Juglans californica John C. Roos 1952-6-25 5789 Riverside Riverside 259 Comment
  CLARK-A1528-3061  Cercocarpus betuloides John C. Roos 1948-5-15 3854 Riverside Eagle Mountains Comment
  CLARK-A1528-3072  Prunus ilicifolia John C. Roos 1940-5-4 Riverside San Timoteo Canyon Comment
  CLARK-A1528-3099  Lamium amplexicaule John C. Roos 1938-3-12 1642 Riverside La Sierra 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-A1528-3116  Salvia greatae John C. Roos 1963-11-2 Riverside Orocopia Mountains Comment
  CLARK-A1528-3117  Salvia greatae John C. Roos 1958-3-29 Riverside Coachella Canal Comment
  CLARK-A1528-3118  Salvia greatae John C. Roos 1949-3-19 4101 Riverside Orocopia Mountains Comment
  CLARK-A1528-3122  Salvia mohavensis John C. Roos 1965-6-23 Riverside Lost Palms Canyon Comment
  CLARK-A1528-3131  Scutellaria tuberosa John C. Roos 1950-4-15 4734 Riverside Reche Canyon 822 Comment
  CLARK-A1528-3136  Hyptis emoryi John C. Roos 1965-12-4 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3140  Monardella hypoleuca John C. Roos 1962-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-316  Alnus rhombifolia John C. Roos 1951-9-25 5298 Riverside Riverside 259 Comment
  CLARK-A1528-3165  Mentzelia involucrata John C. Roos 1948-4-24 3801 Riverside Whitewater 518 Comment
  CLARK-A1528-3168  Mentzelia micrantha John C. Roos, Lucille Roos 1952-5-19 5695 Riverside Moreno 518 Comment
  CLARK-A1528-3172  Petalonyx linearis John C. Roos 1949-6-2 4150 Riverside Chocolate Mountains Comment
  CLARK-A1528-3185  Calochortus albus John C. Roos 1960-5-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-3201  Calochortus weedii var. intermedius John C. Roos 1962-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-3212  Ammannia coccinea John C. Roos 1952-5-16 5672 Riverside San Jacinto River 426 Comment
  CLARK-A1528-3221  Eremalche exilis John C. Roos 1949-3-19 4115 Riverside Indio Comment
  CLARK-A1528-3225  Hibiscus denudatus John C. Roos 1949-3-19 4103 Riverside Orocopia Mountains Comment
  CLARK-A1528-3226  Hibiscus denudatus John C. Roos 1939-4-6 4145 Riverside Orocopia Mountains Comment
  CLARK-A1528-3227  Hibiscus denudatus John C. Roos 1958-2-22 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3243  Sidalcea neomexicana John C. Roos 1966-5-19 Riverside San Jacinto Valley Comment
  CLARK-A1528-3245  Sphaeralcea ambigua John C. Roos 1947-2-15 3240 Riverside Eagle Mountains Comment
  CLARK-A1528-3251  Proboscidea althaeifolia John C. Roos 1965-9-5 Riverside Chuckwalla Valley Comment
  CLARK-A1528-3256  Abronia villosa John C. Roos 1946-9-14 3017 Riverside San Jacinto Mountains 1371 Comment
  CLARK-A1528-3257  Abronia villosa John C. Roos 1949-3-26 4124 Riverside Indio Comment
  CLARK-A1528-3258  Abronia villosa var. aurita John C. Roos 1936-9-15 2516 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3259  Abronia villosa John C. Roos 1937-4-18 1364 Riverside Cabazon Comment
  CLARK-A1528-3267  Boerhavia coccinea John C. Roos 1966-9-20 Riverside San Jacinto Comment
  CLARK-A1528-3270  Boerhavia torreyana John C. Roos 1965-9-26 Riverside Santa Rosa Mountains 701 Comment
  CLARK-A1528-3271  Boerhavia wrightii John C. Roos 1937-8-22 14 Riverside Comment
  CLARK-A1528-3272  Boerhavia wrightii John C. Roos 1937-8-20 Riverside Desert Center Comment
  CLARK-A1528-3286  Forestiera neomexicana John C. Roos 1965-7-25 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3308  Zauschneria californica John C. Roos 1949-9-21 4663 Riverside Reche Canyon Comment
  CLARK-A1528-3313  Zauschneria latifolia var. johnstonii John C. Roos 1947-11-1 3754 Riverside Eagle Mountain Comment
  CLARK-A1528-3314  Boisduvalia glabella John C. Roos 1952-6-18 5779 Riverside Edgemont 457 Comment
  CLARK-A1528-3315  Boisduvalia glabella John C. Roos 1952-5-14 5662 Riverside Edgemont 487 Comment
  CLARK-A1528-3320  Camissonia boothii subsp. decorticans John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3321  Camissonia brevipes John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3323  Camissonia chamaenerioides John C. Roos 1966-3-26 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3324  Camissonia chamaenerioides John C. Roos 1949-4-11 4235 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3328  Camissonia claviformis John C. Roos 1947-2-15 3267 Riverside Eagle Mountain Comment
  CLARK-A1528-3329  Camissonia claviformis John C. Roos 1966-3-20 Riverside Comment
  CLARK-A1528-3342  Epilobium adenocaulon var. parishii John C. Roos 1952-4-23 5577 Riverside Box Springs Mountain 457 Comment
  CLARK-A1528-3349  Oenothera deltoides John C. Roos 1966-3-12 Riverside Indio Comment
  CLARK-A1528-3361  Camissonia strigulosa John C. Roos 1965-6-13 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3364  Clarkia dudleyana John C. Roos 1952-6-8 5752 Riverside Reche Canyon 518 Comment
  CLARK-A1528-3377  Epipactis gigantea John C. Roos 1941-8-2 87 Riverside San Jacinto Mountains 2133 Comment
  CLARK-A1528-3378  Epipactis gigantea John C. Roos 1948-5-29 3870 Riverside Whitewater Canyon Comment
  CLARK-A1528-3405  Argemone munita John C. Roos, Lucille Roos 1952-5-19 5693 Riverside 518 Comment
  CLARK-A1528-3415  Platystemon californicus John C. Roos 1966-3-24 Riverside Winchester Comment
  CLARK-A1528-3416  Platystemon californicus var. crinitus John C. Roos 1942-5-2 1147 Riverside Joshua Tree National Park Comment
  CLARK-A1528-3426  Plantago insularis John C. Roos 1949-3-26 4123 Riverside Indio Comment
  CLARK-A1528-3429  Plantago insularis John C. Roos 1966-3-20 Riverside Comment
  CLARK-A1528-3430  Plantago erecta John C. Roos 1952-4-2 5461 Riverside Box Springs 487 Comment
  CLARK-A1528-3439  Linanthus aureus John C. Roos 1942-5-3 1148 Riverside Joshua Tree Comment
  CLARK-A1528-3446  Navarretia atractyloides John C. Roos 1943-7-15 2733 Riverside San Timoteo Canyon Comment
  CLARK-A1528-3447  Navarretia atractyloides John C. Roos 1952-5-26 5724 Riverside Reche Canyon 457 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-A1528-3469  Linanthus dianthiflorus John C. Roos 1937-4-18 1371 Riverside Snow Creek Comment
  CLARK-A1528-3475  Linanthus dichotomus John C. Roos 1937-4-17 Riverside Aguanga Comment
  CLARK-A1528-3476  Linanthus liniflorus John C. Roos 1937-5-27 Riverside Reche Canyon Comment
  CLARK-A1528-3477  Linanthus liniflorus John C. Roos 1952-5-26 5712 Riverside Reche Canyon 457 Comment
  CLARK-A1528-3482  Linanthus nuttallii subsp. floribundus John C. Roos 1962-5-19 Riverside Santa Ana Mountains Comment
  CLARK-A1528-3486  Linanthus pygmaeus John C. Roos 1950-4-22 4757 Riverside Reche Canyon 822 Comment
  CLARK-A1528-3489  Eriastrum densifolium subsp. austromontanum John C. Roos 1943-5-23 2660 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-3491  Eriastrum densifolium John C. Roos 1965-7-22 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3494  Eriastrum sapphirinum John C. Roos 1965-6-13 Riverside San Jacinto Valley Comment
  CLARK-A1528-3498  Gilia achilleifolia subsp. multicaulis John C. Roos 1937-4-4 1389 Riverside La Sierra Comment
  CLARK-A1528-3499  Gilia achilleifolia subsp. multicaulis John C. Roos 1940-4-20 903 Riverside Reche Canyon Comment
  CLARK-A1528-3500  Gilia angelensis John C. Roos 1966-3-22 Riverside Edgemont Comment
  CLARK-A1528-3502  Gilia angelensis John C. Roos 1952-4-2 5460 Riverside Box Springs 487 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-A1528-3562  Pinus quadrifolia John C. Roos 1965-8-18 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3563  Pinus quadrifolia John C. Roos 1936-9-15 2513 Riverside San Jacinto Mountains 1493 Comment
  CLARK-A1528-3564  Pinus quadrifolia John C. Roos 1947-4-5 3436 Riverside San Jacinto Mountains 1462 Comment
  CLARK-A1528-3571  Notholaena newberryi John C. Roos, Lucille Roos 1951-10-27 5348 Riverside Riverside 304 Comment
  CLARK-A1528-3573  Cheilanthes clevelandii John C. Roos 1937-6-7 1798 Riverside Sage Comment
  CLARK-A1528-3578  Adiantum pedatum John C. Roos 1948-5-29 3871 Riverside Whitewater Canyon Comment
  CLARK-A1528-3581  Notholaena parryi John C. Roos 1946-11-30 3168 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3585  Pinus coulteri John C. Roos 1942-6-20 1281 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3588  Pellaea andromedifolia John C. Roos 1937-5-2 1417 Riverside La Sierra Comment
  CLARK-A1528-3591  Pityrogramma triangularis John C. Roos 1936-11-21 Riverside La Sierra Comment
  CLARK-A1528-3597  Chorizanthe brevicornu John C. Roos 1948-4-24 3794 Riverside Whitewater 548 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-A1528-3616  Eriogonum angulosum John C. Roos 1937-4-23 1824 Riverside Twentynine Palms Comment
  CLARK-A1528-3617  Eriogonum apiculatum John C. Roos 1946-8-27 2925 Riverside Santa Rosa Mountains 2194 Comment
  CLARK-A1528-362  Raphanus sativus John C. Roos, Lucille Roos 1951-10-24 5342 Riverside Pedley 243 Comment
  CLARK-A1528-3624  Marsilea vestita John C. Roos 1965-9-16 Riverside Lakeview Comment
  CLARK-A1528-3629  Pinus monophylla John C. Roos 1938-8-7 586 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3645  Eriogonum davidsonii John C. Roos 1942-10-24 2574 Riverside Joshua Tree National Monument Comment
  CLARK-A1528-3691  Eriogonum plumatella John C. Roos 1943-10-17 2743 Riverside Morongo Valley Comment
  CLARK-A1528-3695  Eriogonum pusillum John C. Roos 1943-5-23 2667 Riverside Little San Bernardino Mountains 914 Comment
  CLARK-A1528-3702  Eriogonum reniforme John C. Roos 1937-4-23 1818 Riverside Dry Morongo Canyon Comment
  CLARK-A1528-3723  Eriogonum wrightii John C. Roos 1967-10-28 Riverside Whitewater 426 Comment
  CLARK-A1528-3727  Eriogonum wrightii subsp. membranaceum John C. Roos 1943-7-31 2705 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3729  Chorizanthe thurberi John C. Roos 1943-5-23 2678 Riverside Comment
  CLARK-A1528-3733  Eriogonum elongatum John C. Roos 1975-12-6 Riverside 1219 Comment
  CLARK-A1528-3756  Oxytheca emarginata John C. Roos 1941-5-10 126 Riverside San Jacinto Mountains 1219 Comment
  CLARK-A1528-3794  Pterostegia drymarioides John C. Roos 1952-3-19 5397 Riverside Box Springs Mountains 457 Comment
  CLARK-A1528-3797  Rumex californicus John C. Roos 1952-5-26 5719 Riverside Reche Canyon 457 Comment
  CLARK-A1528-3799  Rumex hymenosepalus John C. Roos 1966-4-29 Riverside Lakeview 457 Comment
  CLARK-A1528-3803  Zauschneria californica John C. Roos 1952-8-27 5889 Riverside Reche Canyon 457 Comment
  CLARK-A1528-3804  Eriastrum densifolium subsp. mohavense John C. Roos 1943-5-23 2661 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-3806  Cheilanthes californica John C. Roos 1952-4-9 5499 Riverside Riverside 380 Comment
  CLARK-A1528-3811  Calandrinia ambigua John C. Roos 1949-5-5 4098 Riverside Orocopia Comment
  CLARK-A1528-3816  Calyptridium monandrum John C. Roos 1937-3-3 1302 Riverside La Sierra Comment
  CLARK-A1528-3836  Dodecatheon clevelandii John C. Roos 1952-2-29 5370 Riverside Box Springs Mountains 457 Comment
  CLARK-A1528-3839  Samolus parviflorus John C. Roos 1937-6-7 497 Riverside Aguanga Comment
  CLARK-A1528-3846  Aquilegia formosa var. truncata John C. Roos 1942-6-20 1280 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3851  Clematis ligusticifolia John C. Roos 1965-10-7 Riverside Riverside Comment
  CLARK-A1528-3853  Clematis pauciflora John C. Roos 1943-8-8 2700 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3858  Delphinium parishii subsp. parishii John C. Roos 1937-4-18 1368 Riverside Cabazon Comment
  CLARK-A1528-3860  Delphinium parishii subsp. parishii John C. Roos 1947-5-10 3612 Riverside Reche Canyon Comment
  CLARK-A1528-3862  Delphinium parishii subsp. parishii John C. Roos 1948-4-24 3791 Riverside Cabazon Comment
  CLARK-A1528-3865  Delphinium parryi John C. Roos 1937-5-2 1415 Riverside La Sierra Comment
  CLARK-A1528-3880  Thalictrum polycarpum John C. Roos 1952-4-16 5552 Riverside Reche Canyon 487 Comment
  CLARK-A1528-3895  Ceanothus leucodermis John C. Roos 1952-4-23 5574 Riverside Highgrove Comment
  CLARK-A1528-3907  Rhamnus crocea JOhn C. Roos 1952-2-29 5378 Riverside Reche Canyon 457 Comment
  CLARK-A1528-3911  Colubrina californica John C. Roos 1967-11-11 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3912  Colubrina californica John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-394  Atriplex canescens John C. Roos 1951-10-19 5326 Riverside San Jacinto Valley 457 Comment
  CLARK-A1528-3948  Galium aparine John C. Roos 1937-5-2 Riverside La Sierra Comment
  CLARK-A1528-3953  Galium parishii John C. Roos 1936-9-15 2510 Riverside San Jacinto Mountains Comment
  CLARK-A1528-3956  Galium stellatum subsp. eremicum John C. Roos 1949-4-10 4229 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-3972  Adenostoma sparsifolium John C. Roos 1965-8-18 Riverside San Jacinto Mountains Comment
  CLARK-A1528-399  Atriplex patula subsp. hastata John C. Roos, Lucille Roos 1951-10-24 5339 Riverside Pedley 228 Comment
  CLARK-A1528-3994  Heteromeles arbutifolia John C. Roos, Lucille Roos 1952-6-21 5780 Riverside Reche Canyon 487 Comment
  CLARK-A1528-40  Avena fatua John C. Roos 1951-9-25 Riverside Riverside 259 Comment
  CLARK-A1528-401  Atriplex semibaccata John C. Roos 1951-9-25 5278 Riverside Riverside 259 Comment
  CLARK-A1528-4028  Prunus emarginata John C. Roos 1937-8-18 2410 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4030  Prunus fasciculata John C. Roos 1966-3-20 Riverside Eagle Mountains Comment
  CLARK-A1528-4031  Prunus fremontii John C. Roos, Lucille Roos 1953-3-21 5908 Riverside Palm Springs 274 Comment
  CLARK-A1528-4037  Prunus virginiana John C. Roos 1965-7-3 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4044  Rubus parviflorus John C. Roos 1965-7-3 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4045  Rubus vitifolius John C. Roos 1952-6-25 5793 Riverside Riverside Comment
  CLARK-A1528-4054  Salix hindsiana var. leucodendroides John C. Roos 1937-5-23 617 Riverside Riverside Comment
  CLARK-A1528-4055  Salix hindsiana var. leucodendroides John C. Roos, Lucille Roos 1952-3-1 5382 Riverside Moreno Comment
  CLARK-A1528-4086  Styrax officinalis John C. Roos 1966-4-23 Riverside Santa Ana Mountains Comment
  CLARK-A1528-4127  Ribes cereum John C. Roos 1946-8-27 2782 Riverside Santa Rosa Mountains Comment
  CLARK-A1528-4129  Ribes indecorum John C. Roos 1947-3-15 3341 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4130  Ribes indecorum John C. Roos 1952-2-29 5360 Riverside Box Springs Mountains 487 Comment
  CLARK-A1528-4132  Ribes indecorum John C. Roos 1946-12-27 3194 Riverside Box Springs Mountains Comment
  CLARK-A1528-4162  Antirrhinum filipes John C. Roos 1947-2-15 3238 Riverside Comment
  CLARK-A1528-4165  Antirrhinum nuttallianum John C. Roos 1937-5-2 1398 Riverside La Sierra Comment
  CLARK-A1528-4167  Antirrhinum nuttallianum John C. Roos 1965-10-19 Riverside Reche Canyon Comment
  CLARK-A1528-4168  Antirrhinum nuttallianum John C. Roos 1940-5-20 904 Riverside Reche Canyon Comment
  CLARK-A1528-4169  Antirrhinum nuttallianum John C. Roos 1966-4-29 Riverside Comment
  CLARK-A1528-4171  Castilleja affinis John C. Roos 1966-4-5 Riverside Winchester Comment
  CLARK-A1528-4177  Castilleja foliolosa John C. Roos 1940-5-4 880 Riverside San Timoteo Canyon Comment
  CLARK-A1528-4178  Castilleja foliolosa John C. Roos 1952-2-29 5375 Riverside Reche Canyon Comment
  CLARK-A1528-4185  Castilleja stenantha John C. Roos 1952-6-10 5757 Riverside Riverside 259 Comment
  CLARK-A1528-4193  Collinsia heterophylla John C. Roos 1950-4-15 4733 Riverside Reche Canyon 822 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-A1528-4227  Mohavea confertiflora John C. Roos 1947-2-14 3252 Riverside Eagle Mountains Comment
  CLARK-A1528-4229  Mimulus bigelovii John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4243  Mimulus floribundus John C. Roos 1937-5-10 2330 Riverside Perris Comment
  CLARK-A1528-4245  Mimulus floribundus John C. Roos 1952-4-29 5595 Riverside Box Springs Mountain 457 Comment
  CLARK-A1528-4248  Mimulus fremontii John C. Roos 1948-6-19 3883 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4264  Mimulus pilosus John C. Roos 1936-9-15 2511 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4269  Mimulus puniceus John C. Roos 1937-5-10 2334 Riverside Elsinore Comment
  CLARK-A1528-4270  Mimulus puniceus John C. Roos 1941-5-17 123 Riverside March Field Comment
  CLARK-A1528-4271  Mimulus puniceus John C. Roos 1966-4-29 Riverside Lakeview Comment
  CLARK-A1528-4278  Keckiella cordifolia John C. Roos, Lucille Roos 1952-6-24 5786 Riverside Beaumont 731 Comment
  CLARK-A1528-4283  Orthocarpus purpurascens John C. Roos 1947-3-21 3368 Riverside Reche Canyon Comment
  CLARK-A1528-4287  Pedicularis densiflora John C. Roos 1966-4-23 Riverside Santa Ana Mountains Comment
  CLARK-A1528-4314  Penstemon pseudospectabilis John C. Roos 1958-2-22 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4315  Penstemon pseudospectabilis John C. Roos 1949-4-10 4227 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-432  Croton californicus John C. Roos 1951-9-25 5297 Riverside Santa Ana River 259 Comment
  CLARK-A1528-4327  Veronica americana John C. Roos, Lucille Roos 1951-10-24 5338 Riverside Pedley 228 Comment
  CLARK-A1528-4331  Veronica peregrina John C. Roos 1966-3-24 Riverside Edgemont Comment
  CLARK-A1528-4333  Veronica peregrina John C. Roos 1937-6-7 Riverside St. John's Canyon Comment
  CLARK-A1528-4340  Datura discolor John C. Roos 1949-3-5 4094 Riverside Colorado Desert Comment
  CLARK-A1528-4345  Lycium andersonii John C. Roos 1966-2-12 Riverside Chuckwalla Valley Comment
Read comments
May 21 2016
  CLARK-A1528-4353  Nicotiana bigelovii John C. Roos, Lucille Roos 1952-6-21 5783 Riverside Reche Canyon 685 Comment
  CLARK-A1528-4355  Nicotiana trigonophylla John C. Roos 1966-2-5 Riverside Indio Hills Comment
  CLARK-A1528-4356  Physalis acutifolia John C. Roos 1965-9-5 Riverside Blythe Comment
  CLARK-A1528-4357  Physalis acutifolia John C. Roos 1951-9-25 5263 Riverside Riverside 259 Comment
  CLARK-A1528-4360  Physalis crassifolia John C. Roos 1947-2-1 3228 Riverside Painted Canyon Comment
  CLARK-A1528-4361  Physalis crassifolia John C. Roos 1946-10-26 3149 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4372  Solanum sarrachoides John C. Roos, Lucille Roos 1953-6-29 5925 Riverside Cherry Valley 975 Comment
  CLARK-A1528-4380  Solanum xanti John C. Roos 1947-3-15 3358 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4390  Parietaria floridana John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4392  Parietaria floridana John C. Roos 1959-3-19 5401 Riverside Box Springs Mountains 396 Comment
  CLARK-A1528-4394  Urtica urens John C. Roos 1952-2-18 5352 Riverside Riverside Comment
  CLARK-A1528-4401  Verbena lasiostachys John C. Roos, Lucille Roos 1952-6-21 5781 Riverside Reche Canyon Comment
  CLARK-A1528-4411  Viola pedunculata John C. Roos 1947-3-21 3370 Riverside Reche Canyon Comment
  CLARK-A1528-4424  Vitis girdiana John C. Roos 1937-5-19 2063 Riverside Norco Comment
  CLARK-A1528-4425  Vitis girdiana John C. Roos 1965-10-7 Riverside Riverside Comment
  CLARK-A1528-4429  Fagonia laevis John C. Roos 1949-5-5 4095 Riverside Orocopia Mountains Comment
  CLARK-A1528-4433  Larrea tridentata John C. Roos 1948-5-8 3817 Riverside Whitewater Canyon 548 Comment
  CLARK-A1528-4434  Larrea tridentata John C. Roos 1947-2-1 3218 Riverside Coachella Valley Comment
  CLARK-A1528-4436  Larrea tridentata John C. Roos 1937-4-18 1354 Riverside Whitewater Comment
  CLARK-A1528-4437  Larrea tridentata John C. Roos 1946-11-30 3161 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4445  Agrostis diegoensis John C. Roos 1965-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-4456  Andropogon glomeratus John C. Roos 1938-12-29 322 Riverside Palm Canyon Comment
  CLARK-A1528-4463  Aristida adscensionis John C. Roos 1952-4-9 5508 Riverside Mount Rubidoux 365 Comment
  CLARK-A1528-4464  Aristida adscensionis John C. Roos 1952-4-9 5508 Riverside Mt. Rubidoux 365 Comment
  CLARK-A1528-4465  Aristida californica John C. Roos 1937-8-22 1209 Riverside Mojave Desert Comment
  CLARK-A1528-4469  Aristida fendleriana John C. Roos 1938-8-7 583 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4475  Aristida parishii John C. Roos 1940-2-17 891 Riverside Reche Canyon 457 Comment
  CLARK-A1528-4478  Aristida parishii John C. Roos 1946-11-30 3162 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4479  Aristida purpurea John C. Roos 1965-9-26 Riverside Palm Springs 0 Comment
  CLARK-A1528-4480  Aristida purpurea John C. Roos 1951-10-19 5325 Riverside Old Jackrabbit Trail 609 Comment
  CLARK-A1528-4482  Aristida purpurea John C. Roos 1965-8-15 Riverside San Jacinto Valley Comment
  CLARK-A1528-4484  Aristida purpurea John C. Roos 1965-6-23 Riverside Eagle Mountain Comment
  CLARK-A1528-4488  Aristida purpurea var. glauca John C. Roos 1946-9-14 3029 Riverside San Jacinto Mountains 1188 Comment
  CLARK-A1528-4491  Aristida wrightii John C. Roos 1938-8-7 582 Riverside San Jacinto River 701 Comment
  CLARK-A1528-4492  Avena barbata John C. Roos 1966-3-22 Riverside San Jacinto Valley Comment
  CLARK-A1528-4495  Avena fatua John C. Roos 1952-4-9 5472 Riverside Riverside 274 Comment
  CLARK-A1528-4497  Avena fatua John C. Roos 1952-4-9 5472 Riverside Riverside 274 Comment
  CLARK-A1528-4501  Bothriochloa barbinodis John C. Roos 1947-2-15 3236 Riverside Eagle Mountains Comment
  CLARK-A1528-4503  Bouteloua aristidoides John C. Roos 1963-10-23 Riverside Chuckwalla Valley Comment
  CLARK-A1528-4504  Bouteloua aristidoides John C. Roos 1965-9-5 Riverside Chuckwalla Valley Comment
  CLARK-A1528-4506  Bouteloua aristidoides John C. Roos 1943-12-19 2764 Riverside Mecca Hills Comment
  CLARK-A1528-4507  Bouteloua aristidoides John C. Roos 1937-8-22 478 Riverside Comment
  CLARK-A1528-4508  Bouteloua aristidoides John C. Roos 1965-9-5 Riverside Chuckwalla Valley Comment
  CLARK-A1528-4509  Bouteloua aristidoides John C. Roos 1946-9-14 3026 Riverside San Jacinto Mountains 1219 Comment
  CLARK-A1528-4511  Bouteloua barbata John C. Roos 1937-8-20 1227 Riverside Blythe Comment
  CLARK-A1528-4513  Bouteloua barbata John C. Roos 1965-9-5 Riverside Comment
  CLARK-A1528-4516  Bouteloua curtipendula John C. Roos 1958-9-28 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4533  Bromus carinatus John C. Roos 1953-4-15 5912 Riverside Riverside 259 Comment
  CLARK-A1528-4535  Bromus diandrus John C. Roos 1952-4-9 5474 Riverside Riverside 259 Comment
  CLARK-A1528-4545  Bromus mollis John C. Roos, Lucille Roos 1950-4-15 4740 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-4546  Bromus mollis John C. Roos, Lucille Roos 1950-4-15 4740 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-4547  Bromus orcuttianus John C. Roos 1942-6-20 994 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4553  Bromus rubens John C. Roos 1952-4-2 5465 Riverside Box Springs 426 Comment
  CLARK-A1528-4554  Bromus rubens John C. Roos 1952-4-2 5465 Riverside Box Springs 426 Comment
  CLARK-A1528-4556  Bromus tectorum John C. Roos 1967-4-25 Riverside Hemet Comment
  CLARK-A1528-4559  Bromus trinii John C. Roos 1962-3-24 Riverside Whitewater Canyon Comment
  CLARK-A1528-4562  Bromus trinii John C. Roos 1942-5-2 1120 Riverside Little San Bernardino Mountains Comment
  CLARK-A1528-4564  Bromus unioloides Alfred R. Roos 1937-11-13 Riverside Riverside 243 Comment
  CLARK-A1528-4569  Cenchrus pauciflorus John C. Roos, Lucille Roos 1952-7-15 5811 Riverside Hemet 487 Comment
  CLARK-A1528-4572  Chloris gayana John C. Roos 1965-9-16 Riverside San Jacinto Comment
  CLARK-A1528-4574  Chloris virgata John C. Roos 1952-9-3 5897 Riverside Riverside 304 Comment
  CLARK-A1528-4580  Deschampsia danthonioides var. gracilis John C. Roos 1952-4-16 5543 Riverside Edgemont 487 Comment
  CLARK-A1528-4585  Digitaria ischaemum John C. Roos 1951-9-25 5276 Riverside Riverside 259 Comment
  CLARK-A1528-4588  Digitaria sanguinalis John C. Roos 1937-8-17 2547 Riverside San Jacinto Comment
  CLARK-A1528-4589  Distichlis spicata subsp. stricta John C. Roos 1937-5-10 2333 Riverside Elsinore Comment
  CLARK-A1528-4592  Distichlis stricta var. laxa John C. Roos 1952-7-2 5804 Riverside Riverside 259 Comment
  CLARK-A1528-4600  Eleusine indica John C. Roos, Edmund C. Jaeger 1952-10-8 5899 Riverside Riverside 259 Comment
  CLARK-A1528-4605  Elymus glaucus John C. Roos 1937-5-10 2336 Riverside Lake Elsinore Comment
  CLARK-A1528-4615  Eriochloa aristata John C. Roos 1965-9-26 Riverside Indio Comment
  CLARK-A1528-4616  Eriochloa aristata John C. Roos 1937-8-20 477 Riverside Blythe Comment
  CLARK-A1528-4622  Eriochloa acuminata John C. Roos 1937-11-28 Riverside Riverside Comment
  CLARK-A1528-4626  Erioneuron pulchellum John C. Roos 1949-3-5 4088 Riverside Orocopia Mountains Comment
  CLARK-A1528-4628  Eragrostis cilianensis John C. Roos 1965-7-7 Riverside San Jacinto Comment
  CLARK-A1528-4640  Eragrostis curvula John C. Roos 1965-9-16 Riverside Lakeview Comment
  CLARK-A1528-4643  Festuca arundinacea John C. Roos 1950-4-15 4743 Riverside Riverside 259 Comment
  CLARK-A1528-4652  Festuca grayi John C. Roos 1952-4-9 5482 Riverside Fairmount Park 259 Comment
  CLARK-A1528-4656  Festuca megalura John C. Roos, Lucille Roos 1950-4-15 4741 Riverside Pigeon Pass 457 Comment
  CLARK-A1528-4661  Festuca octoflora John C. Roos 1952-4-9 5483 Riverside Riverside 259 Comment
  CLARK-A1528-4663  Festuca octoflora John C. Roos 1952-4-9 5483 Riverside Riverside 259 Comment
  CLARK-A1528-4664  Festuca octoflora John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4666  Festuca pacifica John C. Roos 1938-3-20 726 Riverside Temescal Canyon Comment
  CLARK-A1528-4667  Festuca pacifica John C. Roos 1937-5-2 1282 Riverside Riverside Comment
  CLARK-A1528-4668  Festuca pacifica John C. Roos 1952-4-9 5481 Riverside Riverside 259 Comment
  CLARK-A1528-4674  Gastridium ventricosum John C. Roos 1965-6-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-4675  Glyceria elata John C. Roos 1941-8-2 85 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4676  Glyceria elata John C. Roos 1941-8-2 85 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4681  Hilaria rigida John C. Roos 1965-9-5 Riverside Chuckwalla Valley Comment
  CLARK-A1528-4689  Hordeum glaucum John C. Roos 1952-4-9 5494 Riverside Riverside 304 Comment
  CLARK-A1528-4693  Imperata brevifolia John C. Roos 1949-9-17 4655 Riverside Whitewater 396 Comment
  CLARK-A1528-4694  Imperata brevifolia John C. Roos 1949-9-17 4656 Riverside Whitewater Comment
  CLARK-A1528-4696  Imperata brevifolia John C. Roos 1965-6-23 Riverside Palm Springs Comment
  CLARK-A1528-4699  Koeleria macrantha John C. Roos 1952-4-29 5598 Riverside Reche Canyon 457 Comment
  CLARK-A1528-4706  Lamarckia aurea John C. Roos 1952-4-2 5462 Riverside Box Springs Comment
  CLARK-A1528-4707  Leersia oryzoides John C. Roos, Lucille Roos 1951-10-24 5345 Riverside Riverside 259 Comment
  CLARK-A1528-4709  Leersia oryzoides John C. Roos 1965-11-4 Riverside Riverside 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-A1528-4722  Melica californica John C. Roos 1950-4-22 4754 Riverside Box Springs Mountains 792 Comment
  CLARK-A1528-4723  Melica frutescens John C. Roos 1942-5-1 1157 Riverside Dry Morongo Canyon 548 Comment
  CLARK-A1528-4725  Melica frutescens John C. Roos 1937-4-18 1360 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4729  Melica imperfecta John C. Roos 1950-4-22 4752 Riverside Reche Canyon 761 Comment
  CLARK-A1528-4753  Muhlenbergia microsperma John C. Roos 1966-4-29 Riverside Perris Valley Comment
  CLARK-A1528-4754  Muhlenbergia microsperma John C. Roos 1952-4-9 5507 Riverside Riverside 365 Comment
  CLARK-A1528-4756  Muhlenbergia microsperma John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4759  Muhlenbergia minutissima John C. Roos, Lucille Roos 1952-10-18 5903 Riverside Little San Bernardino Mountains 1219 Comment
  CLARK-A1528-4762  Muhlenbergia richardsonis Alfred R. Roos 1937-8-19 10679 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4763  Muhlenbergia rigens John C. Roos 1947-11-1 Riverside Eagle Mountain Comment
  CLARK-A1528-4772  Oryzopsis hymenoides Alfred R. Roos 1937-4-18 2397 Riverside Snow Creek Comment
  CLARK-A1528-4784  Panicum hirticaule John C. Roos 1965-9-5 Riverside Comment
  CLARK-A1528-4788  Panicum urvilleanum John C. Roos 1737-4-28 1283 Riverside Whitewater Comment
  CLARK-A1528-4791  Paspalum dilatatum John C. Roos 1951-9-25 5262 Riverside Riverside 259 Comment
  CLARK-A1528-4796  Phalaris lemmonii John C. Roos 1937-5-10 456 Riverside Elsinore Comment
  CLARK-A1528-4797  Phalaris lemmonii John C. Roos 1966-3-24 Riverside Winchester Comment
  CLARK-A1528-4811  Phragmites australis John C. Roos 1947-11-1 3760 Riverside Eagle Mountain Comment
  CLARK-A1528-4828  Poa pratensis John C. Roos 1952-5-7 5622 Riverside Edgemont 487 Comment
  CLARK-A1528-4835  Poa scabrella John C. Roos 1950-3-25 4177 Riverside Reche Canyon 457 Comment
  CLARK-A1528-4838  Poa scabrella John C. Roos 1942-5-1 1158 Riverside Dry Morongo Canyon 609 Comment
  CLARK-A1528-4841  Polypogon monspeliensis John C. Roos 1952-4-23 5576 Riverside Box Springs Mountain 457 Comment
  CLARK-A1528-485  Lotus rigidus John C. Roos 1951-9-25 Riverside Pinyon Crest Comment
  CLARK-A1528-4851  Psathyrotes ramosissima John C. Roos 1947-2-1 3227 Riverside Painted Canyon Comment
  CLARK-A1528-4852  Streptanthella longirostris John C. Roos 1937-4-18 1372 Riverside Snow Creek Comment
  CLARK-A1528-4855  Layia glandulosa John C. Roos 1937-4-18 1374 Riverside Cabazon Comment
  CLARK-A1528-4856  Erodium moschatum John C. Roos 1937-5-2 1402 Riverside Riverside Comment
  CLARK-A1528-4873  Lupinus sparsiflorus John C. Roos 1937-3-23 434 Riverside Whitewater Comment
  CLARK-A1528-4874  Juncus bufonius John C. Roos 1937-5-10 2069 Riverside Perris Comment
  CLARK-A1528-4877  Erigeron foliosus John C. Roos 1938-5-26 474 Riverside La Sierra Comment
  CLARK-A1528-4878  Wislizenia refracta John C. Roos 1937-4-23 655 Riverside Twentynine Palms Comment
Read comments
Mar 3 2014
  CLARK-A1528-4885  Nemacladus rubescens John C. Roos 1937-4-28 1290 Riverside Comment
  CLARK-A1528-4886  Draba cuneifolia John C. Roos 1937-2-27 1297 Riverside San Timoteo Canyon Comment
  CLARK-A1528-4903  Astragalus tricarinatus John C. Roos 1937-4-23 490 Riverside Dry Morongo Canyon Comment
  CLARK-A1528-4930  Monardella lanceolata John C. Roos 1943-8-8 2710 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4941  Pectis papposa John C. Roos 1946-9-14 3004 Riverside Asbestos Mountain 1005 Comment
  CLARK-A1528-4943  Hulsea vestita subsp. callicarpha John C. Roos 1942-6-20 1275 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4944  Nama demissa John C. Roos 1937-4-18 1388 Riverside Whitewater Comment
  CLARK-A1528-4948  Hulsea heterochroma John C. Roos 1942-6-20 1274 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4964  Salvia mohavensis John C. Roos 1947-2-15 3234 Riverside Eagle Mountains Comment
  CLARK-A1528-4973  Perityle emoryi John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-4978  Arabis pulchra John C. Roos 1947-2-15 3232 Riverside Eagle Mountains Comment
  CLARK-A1528-4987  Eriophyllum confertiflorum var. tridactylum John C. Roos 1942-6-20 1277 Riverside San Jacinto Mountains Comment
  CLARK-A1528-4988  Lupinus sparsiflorus John C. Roos 1948-4-24 3789 Riverside Cabazon Comment
  CLARK-A1528-4991  Encelia virginensis subsp. actonii John C. Roos 1948-4-24 3798 Riverside Whitewater Comment
  CLARK-A1528-4992  Crossosoma bigelovii John C. Roos 1948-4-24 3803 Riverside Whitewater 609 Comment
  CLARK-A1528-4993  Artemisia californica John C. Roos 1948-4-24 3806 Riverside Whitewater Comment
  CLARK-A1528-4994  Encelia virginensis subsp. actonii John C. Roos 1948-4-24 3790 Riverside Cabazon 547 Comment
  CLARK-A1528-4995  Atriplex rosea John C. Roos 1965-8-4 Riverside Arlington Comment
  CLARK-A1528-4996  Ambrosia dumosa John C. Roos 1948-4-24 3796 Riverside Whitewater Comment
  CLARK-A1528-5000  Chaenactis artemisiifolia John C. Roos 1937-5-10 2070 Riverside Comment
Read comments
Jun 24 2014
  CLARK-A1528-5002  Nolina parryi John C. Roos 1965-7-18 Riverside San Jacinto Mountains Comment
  CLARK-A1528-5009  Lotus purshianus John C. Roos 1937-6-7 2400 Riverside San Jacinto Comment
  CLARK-A1528-5010  Silene laciniata John C. Roos 1937-6-7 2399 Riverside Comment
  CLARK-A1528-5012  Chenopodium leptophyllum John C. Roos 1946-8-27 2913 Riverside Santa Rosa Mountains 2438 Comment
  CLARK-A1528-5014  Tropidocarpum gracile John C. Roos 1952-2-20 5364 Riverside Reche Canyon 457 Comment
  CLARK-A1528-5015  Dithyrea californica John C. Roos 1937-4-18 1367 Riverside Comment
  CLARK-A1528-5043  Sitanion hansenii John C. Roos 1952-6-13 5765 Riverside Reche Canyon 457 Comment
  CLARK-A1528-5046  Sporobolus poiretii John C. Roos, Lucille Roos 1951-9-25 5277 Riverside Riverside 259 Comment
  CLARK-A1528-5047  Sporobolus asperifolius John C. Roos 1951-9-25 5257 Riverside Riverside 259 Comment
  CLARK-A1528-5048  Sporobolus flexuosus John C. Roos 1946-9-14 3021 Riverside Asbestos Mountain 1066 Comment
  CLARK-A1528-5053  Juncus phaeocephalus var. paniculatus John C. Roos 1948-5-15 3837 Riverside Eagle Mountains Comment
  CLARK-A1528-5054  Juncus acutus var. sphaerocarpus John C. Roos 1948-5-15 3855 Riverside Eagle Mountains Comment
  CLARK-A1528-5055  Medicago sativa John C. Roos 1951-9-25 5292 Riverside Riverside 259 Comment
  CLARK-A1528-5058  Psoralea californica John C. Roos 1941-5-10 125 Riverside San Jacinto Mountains Comment
  CLARK-A1528-5060  Phacelia vallis-mortae John C. Roos 1937-4-18 679 Riverside Mount San Jacinto 487 Comment
  CLARK-A1528-5061  Nama hispida var. spathulata John C. Roos 1949-4-9 4203 Riverside Desert Center 274 Comment
  CLARK-A1528-510  Melilotus albus John C. Roos 1951-9-25 5256 Riverside Riverside 259 Comment
  CLARK-A1528-5111  Clematis ligusticifolia John C. Roos 1951-9-25 5252 Riverside Riverside 259 Comment
  CLARK-A1528-5128  Lepidospartum squamatum var. palmeri John C. Roos 1965-10-12 Riverside Whitewater Comment
  CLARK-A1528-5176  Melica imperfecta John C. Roos 1950-4-22 4752 Riverside Box Springs Mountains 792 Comment
  CLARK-A1528-5177  Melica imperfecta John C. Roos 1950-4-22 4752 Riverside Box Springs Mountains 792 Comment
  CLARK-A1528-5182  Eriogonum parishii John C. Roos 1946-8-27 2921 Riverside Santa Rosa Mountains 2194 Comment
  CLARK-A1528-5185  Solanum sarrachoides John C. Roos 1953-6-29 5925 Riverside Cherry Valley 975 Comment
  CLARK-A1528-5187  Melica imperfecta John C. Roos 1950-4-29 4772 Riverside Box Springs Mountains 609 Comment
  CLARK-A1528-5188  Melica imperfecta John C. Roos 1950-4-29 4771 Riverside Box Springs Mountains 609 Comment
  CLARK-A1528-5196  Rhamnus crocea John C. Roos 1952-2-29 5378 Riverside Reche Canyon 457 Comment
  CLARK-A1528-5198  Antirrhinum nuttallianum John C. Roos 1966-4-29 Riverside Comment
  CLARK-A1528-5200  Salix hindsiana var. leucodendroides John C. Roos, Lucille Roos 1952-3-1 5382 Riverside Moreno 609 Comment
  CLARK-A1528-5203  Antirrhinum nuttallianum John C. Roos 1941-4-19 176 Riverside Reche Canyon Comment
  CLARK-A1528-5208  Pterostegia drymarioides John C. Roos 1952-3-19 5397 Riverside Box Springs Mountains Comment
  CLARK-A1528-5212  Eriogonum pusillum John C. Roos 1943-5-23 2667 Riverside Little San Bernardino Mountains 914 Comment
  CLARK-A1528-5220  Hoffmannseggia microphylla John C. Roos 1937-4-28 768 Riverside Shavers Valley Comment
  CLARK-A1528-5224  Chrysopsis villosa var. fastigiata John C. Roos 1949-9-17 4657 Riverside Whitewater Wash Comment
  CLARK-A1528-5226  Baccharis brachyphylla John C. Roos 1949-9-17 4659 Riverside Whitewater Wash 548 Comment
  CLARK-A1528-5229  Draba sonorae John C. Roos 1952-3-19 5402 Riverside Box Springs Mountains 457 Comment
Read comments
Oct 23 2014
  CLARK-A1528-5230  Draba sonorae John C. Roos 1952-3-19 5402 Riverside Box Springs Mountains 457 Comment
Read comments
Oct 23 2014
  CLARK-A1528-5232  Streptanthus heterophyllus John C. Roos 1952-3-19 5404 Riverside Box Springs Mountains 487 Comment
  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-A1528-5242  Microseris linearifolia John C. Roos 1950-4-5 4721 Riverside Pigeon Pass 426 Comment
  CLARK-A1528-5246  Dalea californica John C. Roos 1948-4-24 3800 Riverside Whitewater 457 Comment
  CLARK-A1528-5248  Frankenia grandifolia var. campestris John C. Roos 1937-5-23 2342 Riverside Riverside Comment
  CLARK-A1528-5249  Centaurium venustum John C. Roos 1948-4-24 3797 Riverside Whitewater Comment
  CLARK-A1528-5254  Sorghum sudanense Alfred R. Roos 1936-11-11 Riverside Riverside 243 Comment
  CLARK-A1528-5255  Stipa speciosa John C. Roos 1940-5-4 877 Riverside Reche Canyon Comment
  CLARK-A1528-5258  Sporobolus cryptandrus John C. Roos 1965-8-15 Riverside San Jacinto Valley Comment
  CLARK-A1528-5268  Stipa pulchra John C. Roos 1952-5-7 5621 Riverside Edgemont 487 Comment
  CLARK-A1528-5270  Stipa speciosa John C. Roos 1952-4-9 5495 Riverside Mount Rubidoux 365 Comment
  CLARK-A1528-5283  Tridens muticus John C. Roos 1947-1-11 3198 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5287  Tridens muticus John C. Roos 1966-11-12 Riverside Chuckawalla Mountains Comment
  CLARK-A1528-5292  Stipa speciosa John C. Roos 1965-6-13 Riverside San Jacinto Valley Comment
  CLARK-A1528-5299  Tridens muticus John C. Roos 1949-4-23 Riverside Eagle Mountains Comment
  CLARK-A1528-53  Digitaria ischaemum John C. Roos 1951-9-25 5276 Riverside Riverside 259 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-A1528-5313  Sporobolus poiretii John C. Roos, Lucille Roos 1951-9-25 5277 Riverside Riverside 259 Comment
  CLARK-A1528-5321  Eriophyllum multicaule John C. Roos 1940-5-4 882 Riverside Reche Canyon Comment
  CLARK-A1528-5344  Hyptis emoryi John C. Roos 1965-12-4 Riverside Desert Center 365 Comment
  CLARK-A1528-5356  Clarkia unguiculata John C. Roos, Lucille Roos 1952-4-28 5587 Riverside Riverside 259 Comment
  CLARK-A1528-5357  Boerhavia anisophylla John C. Roos 1937-8-20 12 Riverside Desert Center Comment
  CLARK-A1528-5360  Mentha spicata John C. Roos 1952-8-6 5881 Riverside Riverside 259 Comment
  CLARK-A1528-5367  Marsilea vestita John C. Roos 1965-6-30 Riverside Perris Comment
  CLARK-A1528-537  Eustoma exaltatum John C. Roos 1951-9-25 5259 Riverside Riverside 259 Comment
  CLARK-A1528-5372  Mentzelia micrantha John C. Roos, Lucille Roos 1952-5-19 5695 Riverside Moreno 518 Comment
  CLARK-A1528-5377  Pluchea sericea John C. Roos, Lucille Roos 1951-10-24 5340 Riverside Pedley 228 Comment
  CLARK-A1528-5380  Nemacladus longiflorus var. breviflorus John C. Roos 1937-4-18 1795 Riverside Snow Creek Comment
  CLARK-A1528-5381  Brandegea bigelovii John C. Roos 1963-10-23 Riverside Comment
  CLARK-A1528-5382  Brandegea bigelovii John C. Roos 1965-12-4 Riverside Comment
  CLARK-A1528-5386  Rorippa nasturtium-aquaticum John C. Roos 1948-4-24 3795 Riverside Whitewater Comment
  CLARK-A1528-5387  Raphanus sativus John C. Roos, Lucille Roos 1951-10-24 5342 Riverside Pedley 243 Comment
  CLARK-A1528-5392  Xanthium strumarium var. canadense John C. Roos 1951-9-25 5279 Riverside Riverside 259 Comment
  CLARK-A1528-5393  Solidago occidentalis John C. Roos 1951-9-25 5282 Riverside Riverside 259 Comment
  CLARK-A1528-5394  Solidago confinis John C. Roos 1951-9-25 5283 Riverside Riverside 259 Comment
  CLARK-A1528-5395  Atriplex polycarpa John C. Roos 1943-12-19 2763 Riverside Pushawalla Wash Comment
  CLARK-A1528-5400  Atriplex coronata var. notatior John C. Roos 1952-5-14 5668 Riverside San Jacinto River 426 Comment
  CLARK-A1528-5401  Atriplex coronata var. notatior John C. Roos 1952-5-14 5668 Riverside San Jacinto River 426 Comment
  CLARK-A1528-5417  Monolepis nuttalliana John C. Roos 1952-5-21 5705 Riverside San Jacinto River 426 Comment
  CLARK-A1528-5425  Astragalus sabulonum John C. Roos 1949-3-19 4118 Riverside Mecca Comment
  CLARK-A1528-5428  Garrya flavescens John C. Roos 1947-3-15 3337 Riverside San Jacinto Mountains 1462 Comment
  CLARK-A1528-5433  Erodium obtusiplicatum John C. Roos 1966-3-22 Riverside Edgemont Comment
  CLARK-A1528-5435  Phacelia crenulata John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5436  Phacelia crenulata John C. Roos 1966-3-20 Riverside Chuckwalla Mountains 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-A1528-5447  Artemisia dracunculus John C. Roos 1948-10-16 Riverside Beaumont Comment
  CLARK-A1528-5453  Brickellia desertorum John C. Roos 1950-9-9 4986 Riverside Riverside 396 Comment
  CLARK-A1528-5454  Brickellia desertorum John C. Roos, Lucille Roos 1950-9-30 4996 Riverside Riverside 396 Comment
  CLARK-A1528-5483  Rhus laurina John C. Roos 1954-7-10 6191 Riverside Box Springs Mountains 487 Comment
  CLARK-A1528-5484  Toxicodendron diversilobum John C. Roos, Lucille Roos 1952-4-28 5589 Riverside Riverside Comment
  CLARK-A1528-5489  Krameria grayi John C. Roos 1948-4-24 3804 Riverside Whitewater 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-A1528-5504  Brickellia arguta John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5507  Brickellia desertorum John C. Roos 1949-9-21 4665 Riverside Reche Canyon 457 Comment
  CLARK-A1528-5508  Brickellia desertorum John C. Roos 1947-11-1 3751 Riverside Eagle Mountains Comment
  CLARK-A1528-5509  Brickellia desertorum John C. Roos 1947-11-1 3751 Riverside Eagle Mountains Comment
  CLARK-A1528-5510  Brickellia desertorum John C. Roos 1947-11-1 3751 Riverside Eagle Mountains Comment
  CLARK-A1528-5516  Eclipta alba John C. Roos 1965-7-5 Riverside Thermal 36 Comment
  CLARK-A1528-5518  Haplopappus squarrosus John C. Roos 1965-10-7 Riverside Comment
  CLARK-A1528-5528  Astragalus tricarinatus John C. Roos 1967-3-25 Riverside Whitewater Canyon 457 Comment
  CLARK-A1528-5533  Schismus barbatus John C. Roos 1951-3-24 5033 Riverside Riverside 396 Comment
  CLARK-A1528-5540  Sorghum bicolor Alfred R. Roos 1936-11-11 Riverside Riverside 243 Comment
  CLARK-A1528-5542  Sporobolus flexuosus John C. Roos 1946-9-14 3021 Riverside Asbestos Mountain 1066 Comment
  CLARK-A1528-5550  Stipa lepida John C. Roos 1937-5-2 1395 Riverside La Sierra Comment
  CLARK-A1528-5553  Stipa speciosa John C. Roos 1937-5-1 1292 Riverside Badlands Comment
  CLARK-A1528-5562  Chenopodium botrys Alfred R. Roos 1947-8-15 Riverside Santa Ana River Comment
  CLARK-A1528-5595  Rhus integrifolia John C. Roos 1950-2-18 4707 Riverside Box Springs Mountains 774 Comment
  CLARK-A1528-5596  Rhus integrifolia John C. Roos 1950-2-18 4707 Riverside Box Springs Mountains 774 Comment
  CLARK-A1528-5617  Ambrosia ilicifolia John C. Roos 1945-10-25 3147 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5621  Pulicaria hispanica John C. Roos 1962-10-19 Riverside Whitewater 548 Comment
  CLARK-A1528-5626  Chaenactis fremontii John C. Roos 1937-4-18 2462 Riverside Comment
  CLARK-A1528-5630  Cotula australis John C. Roos 1965-12-20 Riverside Riverside 243 Comment
  CLARK-A1528-5632  Berberis dictyota John C. Roos 1947-1-31 3215 Riverside Reche Canyon Comment
  CLARK-A1528-5634  Berberis nevinii John C. Roos 1948-2-21 3772 Riverside San Timoteo Canyon Comment
  CLARK-A1528-5635  Berberis dictyota John C. Roos 1947-1-31 3215 Riverside Reche Canyon Comment
  CLARK-A1528-5638  Coldenia canescens John C. Roos 1948-5-15 3859 Riverside Eagle Mountains Comment
  CLARK-A1528-5651  Chenopodium pumilio John C. Roos 1947-8-15 Riverside Santa Ana River Comment
  CLARK-A1528-5666  Brandegea bigelovii John C. Roos 1960-4-8 Riverside 380 Comment
  CLARK-A1528-5667  Brandegea bigelovii John C. Roos 1960-4-8 Riverside 380 Comment
  CLARK-A1528-5672  Psoralea physodes John C. Roos 1960-5-30 Riverside Santa Ana Mountains 1219 Comment
  CLARK-A1528-5673  Psoralea physodes John C. Roos 1960-5-30 Riverside Santa Ana Mountains 1219 Comment
  CLARK-A1528-5674  Dalea mollissima John C. Roos 1937-4-24 764 Riverside Sheep Hole Mountains Comment
  CLARK-A1528-5687  Krameria grayi John C. Roos 1937-4-23 796 Riverside Whitewater Comment
  CLARK-A1528-5688  Krameria grayi John C. Roos 1946-5-15 3856 Riverside Eagle Mountains Comment
  CLARK-A1528-5690  Lepechinia cardiophylla John C. Roos 1960-5-30 Riverside Santa Ana Mountains Comment
  CLARK-A1528-5691  Lepechinia cardiophylla John C. Roos 1960-5-30 Riverside Santa Ana Mountains 1066 Comment
  CLARK-A1528-5697  Salvia greatae John C. Roos 1963-9-9 Riverside Orocopia Mountains Comment
  CLARK-A1528-5698  Malacothamnus densiflorus John C. Roos 1960-6-5 Riverside Santa Ana Mountains 1066 Comment
  CLARK-A1528-5699  Boerhavia coccinea John C. Roos 1945-5-15 3858 Riverside Eagle Mountains Comment
  CLARK-A1528-57  Elymus triticoides John C. Roos 1951-10-24 5344 Riverside Riverside 259 Comment
  CLARK-A1528-5703  Menodora spinescens John C. Roos 1948-5-15 3860 Riverside Eagle Mountain Comment
  CLARK-A1528-5707  Oenothera dentata John C. Roos 1937-4-18 1365 Riverside Cabazon Comment
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Oct 1 2018
  CLARK-A1528-5708  Camissonia brevipes John C. Roos 1966-3-20 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5713  Linanthus liniflorus subsp. pharnaceoides John C. Roos 1960-5-30 Riverside Santa Ana Mountains 1066 Comment
  CLARK-A1528-5716  Eriogonum apiculatum John C. Roos 1947-9-6 3743 Riverside San Jacinto Mountains Comment
  CLARK-A1528-5722  Colubrina californica John C. Roos 1946-10-26 3138 Riverside Chuckwalla Mountains Comment
  CLARK-A1528-5724  Ceanothus crassifolius John C. Roos 1948-5-22 3862 Riverside Box Springs Mountains Comment
  CLARK-A1528-5728  Ruta graveolens John C. Roos 1948-2-21 3771 Riverside Reche Canyon 457 Comment
  CLARK-A1528-5731  Castilleja affinis John C. Roos 1937-5-10 2075 Riverside Perris Comment
  CLARK-A1528-5739  Mohavea confertiflora John C. Roos 1949-3-5 4096 Riverside Orocopia Mountains Comment
  CLARK-A1528-5812  Argemone corymbosa John C. Roos 1949-4-11 4245 Riverside Hayfield Comment
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Jan 28 2019
  CLARK-A1528-5815  Paeonia brownii John C. Roos, Lucille Roos 1952-3-1 5381 Riverside San Timoteo Canyon 518 Comment
  CLARK-A1528-6881  Ribes indecorum John C. Roos 1946-12-27 3194 Riverside Box Springs Mountains Comment
  CLARK-A1528-6882  Ribes indecorum John C. Roos 1946-12-27 3194 Riverside Box Springs Mountains Comment
  CLARK-A1528-6888  Brodiaea filifolia John C. Roos 1952-5-14 5667 Riverside San Jacinto River 426 Comment
  CLARK-A1528-692  Paeonia californica John C. Roos 1937-4-17 Riverside Aguanga Comment
  CLARK-A1528-697  Plantago major John C. Roos 1951-9-25 5274 Riverside Riverside 259 Comment
  CLARK-A1528-7747  Garrya flavescens John C. Roos 1950-5-6 4788 Riverside Santa Ana Mountains 1036 Comment
  CLARK-A1528-7774  Orthocarpus purpurascens John C. Roos 1940-4-20 896 Riverside Reche Canyon Comment
  CLARK-A1528-7783  Amaranthus albus John C. Roos 1965-7-27 Riverside Hemet Comment
  CLARK-A1528-7789  Baccharis salicifolia John C. Roos 1947-3-15 3331 Riverside Dos Palmas Spring Comment
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Oct 23 2015
  CLARK-A1528-7824  Agrostis scabra John C. Roos 1937-8-18 494 Riverside San Jacinto Mountains Comment
  CLARK-A1528-7827  Samolus parviflorus John C. Roos 1937-6-19 23 Riverside Murrieta Comment
  CLARK-A1528-7830  Festuca arundinacea John C. Roos 1949-5-21 4317 Riverside Temecula 304 Comment
  CLARK-A1528-7832  Festuca arundinacea John C. Roos 1949-5-21 4317 Riverside Temecula 304 Comment
  CLARK-A1528-7852  Epipactis gigantea John C. Roos 1948-5-15 3838 Riverside Eagle Mountains Comment
  CLARK-A1528-7855  Coldenia canescens John C. Roos 1949-4-11 4243 Riverside Eagle Mountains Comment
  CLARK-A1528-7869  Lomatium mohavense subsp. mohavense John C. Roos 1947-3-15 3330 Riverside San Jacinto Mountains 1219 Comment
  CLARK-A1528-7873  Calystegia longipes John C. Roos 1952-6-8 5747 Riverside Reche Canyon 579 Comment
  CLARK-A1528-7874  Calystegia longipes John C. Roos 1952-6-8 5747 Riverside Reche Canyon 579 Comment
  CLARK-A1528-7881  Galium angustifolium subsp. angustifolium John C. Roos 1948-5-8 3819 Riverside Whitewater Canyon 548 Comment
  CLARK-A1528-7882  Galium angustifolium subsp. angustifolium John C. Roos 1948-5-8 3819 Riverside Whitewater Canyon 548 Comment
  CLARK-A1528-7883  Galium angustifolium subsp. angustifolium John C. Roos 1948-5-8 3819 Riverside Whitewater Canyon 548 Comment
  CLARK-A1528-7886  Fagonia californica var. glutinosa John C. Roos 1948-9-18 3220 Riverside Painted Canyon Comment
  CLARK-A1528-824  Rosa californica John C. Roos 1951-9-25 5261 Riverside Riverside Comment
  CLARK-A1528-83  Paspalum dilatatum John C. Roos 1951-9-25 5262 Riverside Riverside 259 Comment
  CLARK-A1528-890  Physalis acutifolia John C. Roos 1951-9-25 5263 Riverside Riverside 259 Comment
  CLARK-A1528-903  Urtica holosericea John C. Roos 1951-9-25 5286 Riverside Fairmont Park 259 Comment
  CLARK-A1528-95  Stenotaphrum secundatum John C. Roos, Lucille Roos 1951-9-22 5234 Riverside Riverside Comment
  CLARK-A1528-997  Eriogonum fasciculatum subsp. polifolium John C. Roos 1948-5-15 3844 Riverside Eagle Mountains 853 Comment
  HSC78517  Chamaesyce polycarpa J. C. Roos 1946-10-26 3145 Riverside Chuckwalla Mtns. Comment
  HSC78521  Bergia texana J. C. Roos 1952-5-28 5730 Riverside San Jacinto River bottomland, 1 mi. SE of Perris. 427 Comment
  HSC78522  Chaenactis glabriuscula var. glabriuscula J. C. Roos 1966-4-29 Riverside Hills between March AFB and Lakeview Comment
  HSC78527  Aristida purpurea J. C. Roos 1966-4-29 Riverside Hills between March AFB and Lakeview Comment
  HSC78533  Nemacladus longiflorus J. C. Roos 1947-3-15 3343 Riverside 1 mi. E of Valle Vista. 549 Comment
  HSC78592  Camissonia claviformis J. C. Roos 1966-5-20 Riverside 2 mi. SE of Desert Center Comment
  LA102171  Aristida purpurea John C. Roos; 1965-9-26 sn Riverside Palm Springs, in a parkway Comment
  LA102172  Eriochloa acuminata var. acuminata Alfred R. Roos; 1937-11-28 sn Riverside E Washington St Comment
  LA102173  Eriochloa aristata var. aristata John C. Roos; 1965-9-26 sn Riverside Indio Comment
  LA102174  Melica californica John C. Roos; 1950-4-22 4754 Riverside Reche Canyon, 0.5 mi NE of the summit 792 Comment
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Feb 23 2014
  LA102175  Phalaris lemmonii John C. Roos; 1966-3-24 sn Riverside Winchester (near Hemet) 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
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Mar 10 2014
  LA102182  Digitaria ischaemum John C. Roos; 1965-9-28 sn Riverside San Jacinto Comment
  LA102207  Bouteloua eriopoda John C. Roos; 1958-9-28 sn Riverside Santa Rosa Mountains, Abestos Spring, Pinon Flats 1219 Comment
  LA102217  Phalaris lemmonii John C. Roos; 1966-3-24 sn Riverside Winchester (near Hemet) Comment
  LA102237  Gilia capitata subsp. abrotanifolia John C. Roos; Lucille Roos 1952-4-27 5585 Riverside San Timoteo Canyon in Redlands 426 Comment
  LA102269  Brickellia atractyloides var. arguta John C. Roos; 1948-5-1 3813 Riverside Whitewater 1828 Comment
  LA102293  Astragalus insularis var. harwoodii John C. Roos; 1958-3-15 Riverside Chuckwalla Mountains, 3 miles SE of Desert Center Comment
  LA102294  Astragalus didymocarpus var. didymocarpus John C. Roos; 1952-4-30 5607 Riverside between Camp Haan and Riverside 518 Comment
  LA102309  Ceanothus tomentosus John C. Roos; 1950-5-6 4785 Riverside Santa Ana Mountains, at the head of Hagador Canyon, S of Corona Comment
  LA102320  Scutellaria mexicana John C. Roos; 1958-9-27 sn Riverside Santa Rosa Mountains, Carrizo Creek near Black Hill 914 Comment
  LA102326  Echinodorus berteroi J. C. Roos; 1937-6-7 2236 Riverside SAN JACINTO MOUNTAINS, vernal lake at foot of Jackrabbit Trail. Comment
  LA102370  Brickellia nevinii John C. Roos; 1965-9-12 sn Riverside Santa Ana Mountains, Tin Mine Canyon, 3 mi. SW of Corona 548 Comment
  LA102371  Pulicaria paludosa John C. Roos; 1965-6-23 Riverside Palm Springs Comment
  LA102380  Brickellia desertorum John C. Roos; 1965-9-12 sn Riverside Santa Ana Mountains, Tin Mine Canyon, 3 mi. SW of Corona 548 Comment
  LA102386  Porophyllum gracile John C. Roos; 1950-5-6 4789 Riverside Santa Ana Mountains, Tin Mine Canyon 609 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
  OBI33206  Camissoniopsis bistorta J. C. Roos 1947-3-15 3345 Riverside Valle Vista, San Jacinto Valley 549 Comment
  OBI33596  Nemacladus longiflorus J. C. Roos 1947-3-15 3343 Riverside 1 mi E of Valle vista, San Jacinto Valley 549 Comment
  OBI33598  Chaenactis glabriuscula var. lanosa John C. Roos 1966-4-29 s.n. Riverside Between March AFB and Lakeview Comment
  OBI33602  Nemacladus glanduliferus J. C. Roos 1948-5-15 3851 Riverside Upper Lost Palms Cyn, Eagle Mts, Colorado Desert Comment
  OBI33603  Cuscuta campestris J. C. Roos 1951-9-25 5254 Riverside W end Fairmont park, Riverside 259 Comment
  OBI40177  Atriplex muelleri J. C. Roos 1965-10-17 s.n. Riverside 20 mi W of Blythe on the roadside Comment
  POM250764  Petunia parviflora J. C. Roos 1937-6-7 514 Riverside South foot of Jackrabbit Trail, near San Jacinto. Comment
  POM251754  Boerhavia J. C. Roos 1937-8-20 12 Riverside East of Desert Center. Comment
  POM251782  Muhlenbergia minutissima J. C. Roos 1937-8-18 2 Riverside Hidden Lake, San Jacinto Mountains. Comment
  POM251786  Lycium andersonii J. C. Roos 1938-4-27 19 Riverside Hill west of Arlington. 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
  POM262902  Mirabilis multiflora var. pubescens J. C. Roos 1941-5-10 121 Riverside Pinyon Flats Camp, Santa Rosa Mountains. 1220 Comment
  POM262903  Mimulus aurantiacus var. puniceus J. C. Roos 1941-5-17 123 Riverside About 4 miles SW of March Field. Comment
  POM262921  Verbena lasiostachys J. C. Roos 1937-8-23 529 Riverside Snow Creek, north base of Mt. San Jacinto. Comment
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Oct 22 2014
  POM262939  Draba saxosa J. C. Roos 1937-8-18 495 Riverside Forest near Hidden Lake, San Jacinto Mts. Comment
  POM262947  Encelia actoni J. C. Roos 1941-5-10 s.n. Riverside Pinyon Flats Camp, Santa Rosa Mountains. 1220 Comment
  POM262948  Antirrhinum coulterianum J. C. Roos 1941-5-17 138 Riverside About 4 miles SW of March Field. Comment
  POM262957  Layia platyglossa subsp. platyglossa J. C. Roos 1941-5-10 130 Riverside Meadow above Hemet Lake, San Jacinto Mts. Comment
  POM262958  Eriodictyon crassifolium J. C. Roos 1941-5-10 131 Riverside San Jacinto River bridge, east of Hemet Comment
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Apr 29 2011
  POM262976  Antirrhinum nuttallianum subsp. nuttallianum J. C. Roos 1941-4-19 176 Riverside Reche Canyon - 'Plateau' [Label indicates San Bernardino Co.] Comment
  POM263040  Quercus agrifolia J. C. Roos 1937-8-19 358 Riverside Near summit, Pines to Palms Road 1433 Comment
  POM263041  Kallstroemia californica J. C. Roos 1937-8-20 357 Riverside Blythe Comment
  POM263058  Penstemon clevelandii subsp. connatus J. C. Roos 1941-5-10 128 Riverside Pinyon Flats Camp, Santa Rosa Mountains. 1220 Comment
  POM263072  Eriochloa aristata J. C. Roos 1937-8-20 477 Riverside Palo Verde Valley, Colorado Desert. Comment
  POM263081  Leptosiphon androsaceus J. C. Roos 1941-4-19 167 Riverside Reche Canyon - Plateau [Label indicates San Bernardino Co.] Comment
  POM263144  Oxytheca emarginata J. C. Roos 1941-5-10 126 Riverside Pinyon Flats Camp, Santa Rosa Mountains. 1220 Comment
  POM263162  Ambrosia acanthicarpa J. C. Roos 1937-8-19 359 Riverside Thomas Valley, San Jacinto Mts. Comment
  POM263174  Bouteloua aristidoides J. C. Roos 1937-8-22 478 Riverside Colorado River, north of Blythe. Comment
  POM263178  Hordeum brachyantherum subsp. californicum J. C. Roos 1937-5-10 429 Riverside Lake Elsinore. Comment
  POM263357  Phalaris lemmonii J. C. Roos 1937-5-10 456 Riverside Lake Elsinore. Comment
  POM263464  Muhlenbergia californica J. C. Roos 1937-8-23 467 Riverside Snow Creek, north base of Mt. San Jacinto. Comment
  POM263555  Allium fimbriatum var. fimbriatum J. C. Roos 1941-5-10 129 Riverside Pinyon Flats Camp, Santa Rosa Mountains. 1220 Comment
  POM263559  Eriogonum wrightii var. membranaceum J. C. Roos 1937-8-17 360 Riverside Near Idyllwild, San Jacinto Mountains. Comment
  POM264088  Phacelia brachyloba J. C. Roos 1937-6-7 669 Riverside South of Sage. Comment
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Oct 7 2014
  POM264158  Zannichellia palustris J. C. Roos 1937-5-10 508 Riverside Lake Elsinore. Comment
  POM264306  Phacelia mutabilis J. C. Roos 1937-8-18 670 Riverside Round Valley, San Jacinto Mountains. Comment
  POM264307  Allium haematochiton J. C. Roos 1937-3-10 634 Riverside Norco hills. Comment
  POM264311  Nemophila menziesii var. integrifolia J. C. Roos 1937-5-10 666 Riverside Lake Elsinore. Comment
  POM264354  Aristida purpurea var. nealleyi J. C. Roos 1938-8-7 582 Riverside East of Hemet, in mountains along San Jacinto River. Comment
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Apr 3 2011
  POM264638  Aristida purpurea var. fendleriana J. C. Roos 1938-8-7 583 Riverside Pinyon Flats Camp, Santa Rosa Mountains. 1220 Comment
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Apr 3 2011
  POM265628  Atriplex parishii J. C. Roos 1937-8-17 1214 Riverside San Jancito Valley, 5 miles west of Hemet, Comment
  POM265637  Amaranthus californicus J. C. Roos 1937-8-19 2020 Riverside Hemet Valley, just above Hemet Lake, San Jacinto Mountains. Comment
  POM265663  Jepsonia parryi J. C. Roos 1937-11-23 2295 Riverside La Sierra. Comment
  POM265678  Dudleya saxosa subsp. aloides J. C. Roos 1937-4-18 1284 Riverside Near Cabazon. 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
  POM265700  Chorizanthe uniaristata J. C. Roos 1937-4-23 1807 Riverside At Whitewater. Comment
  POM265758  Leymus triticoides J. C. Roos 1937-5-19 2062 Riverside Along Santa Ana River, near Norco. Comment
  POM265761  Vulpia microstachys var. microstachys J. C. Roos 1937-5-10 2071 Riverside Lake Elsinore. Comment
  POM265802  Malvella leprosa J. C. Roos 1937-5-23 2308 Riverside La Sierra, West Riverside County Comment
  POM265812  Gayophytum diffusum subsp. parviflorum J. C. Roos 1937-8-18 2529 Riverside Round Valley, San Jacinto Mountains. 2744 Comment
  POM265814  Oenothera laciniata J. C. Roos 1936-5-15 2259 Riverside La Sierra, western Riverside Co. Comment
  POM265819  Ammannia coccinea J. C. Roos 1937-6-7 2401 Riverside S base of Jackrabbit Trail, San Jacinto Valley Comment
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Mar 20 2011
  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
  POM266285  Ericameria palmeri var. pachylepis J. C. Roos 1937-11-2 2447 Riverside Hills N of Pigeon Pass, Northwestern Riverside County. Comment
  POM266308  Lasthenia coronaria J. C. Roos 1938-4-4 1630 Riverside La Sierra, Western Riverside County Comment
  POM266318  Anthemis cotula J. C. Roos 1937-5-23 23434 Riverside La Sierra. Comment
  POM266330  Vulpia microstachys var. pauciflora J. C. Roos 1938-4-9 1641 Riverside La Sierra, western Riverside Comment
  POM266353  Quercus cornelius-mulleri J. C. Roos 1942-5-1 1132 Riverside Morongo Canyon. Comment
  POM266370  Artemisia dracunculus J. C. Roos 1937-8-17 1615 Riverside San Jacinto. Comment
  POM266615  Bouteloua barbata J. C. Roos 1937-8-20 1227 Riverside Blythe Comment
  POM266628  Nassella lepida J. C. Roos 1937-5-2 1395 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
  POM266631  Epipactis gigantea J. C. Roos 1942-5-2 1129 Riverside Cottonwood Springs, northern Colorado Desert. Comment
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Oct 9 2010
  POM274196  Bouteloua curtipendula J. C. Roos 1948-8-27 2786 Riverside Near Pinon Flat, Santa Rosa Mountains. 1372 Comment
  POM274197  Astragalus douglasii var. parishii J. C. Roos 1946-9-27 2788 Riverside Santa Rosa Mtns. 2226 Comment
  POM301609  Lobelia cardinalis subsp. graminea J. C. Roos 1937-8-23 2402 Riverside Snow Creek, north base of San Jacinto Mountains 762 Comment
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May 21 2011
  POM301706  Cheilanthes newberryi J. C. Roos 1938-5-2 1412 Riverside hills near La Sierra, western Riverside Co. Comment
  POM302488  Camissonia strigulosa J. C. Roos 1943-8-8 2703 Riverside Dry flat, Hall Canyon, San Jacinto Mts. 1768 Comment
  POM302502  Clematis pauciflora J. C. Roos 1943-3-13 2592 Riverside Reche Canyon, off San Bernardino valley. Comment
  POM302504  Clematis ligusticifolia J. C. Roos 1943-8-8 2700 Riverside Hall Canyon. Comment
  POM431205  Eucrypta micrantha J. C. Roos 1958-2-21 s.n. Riverside Corn Springs. Chuckwala Mtns. Comment
  POM431207  Pleuraphis rigida J. C. Roos 1965-9-5 s.n. Riverside 18 miles W of Blythe. Comment
  POM431212  Melica imperfecta J. C. Roos 1950-4-22 4754 Riverside Summit of Reche Canyon, 0.5 mile NE of summit Comment
  RSA0018415  Nuttallanthus texanus J. C. Roos 1947-3-15 3446 Riverside Valle Vista, San Jacinto Valley. Comment
  RSA0121587  Eriastrum sapphirinum subsp. dasyanthum J. C. Roos 1965-6-13 s.n. Riverside San Jacinto Valley, Valle Vista (east of Hemet). Comment
  RSA100183  Sanvitalia procumbens J. C. Roos, Lucille Roos 1954-7-26 6204 Riverside In unused corner of dry garden, 6th Street near Pepper. In E. C. Jaeger's yard? 274 Comment
  RSA158396  Pulicaria hispanica J. C. Roos 1962-10-19 s.n. Riverside Whitewater Canyon 549 Comment
  RSA263175  Agrostis idahoensis J. C. Roos 1937-8-18 465 Riverside Round Valley, San Jacinto Mountains. Comment
  RSA265795  Frankenia grandifolia var. campestris J. C. Roos 1937-9-16 2568 Riverside La Sierra, western Riverside Co. Comment
  RSA266381  Lactuca serriola J. C. Roos 1937-8-17 2546 Riverside San Jacinto. Comment
  RSA309656  Cuscuta indecora J. C. Roos 1951-9-25 5254 Riverside West end Fairmount Park 259 Comment
  RSA351415  Atriplex muelleri J. C. Roos 1965-10-17 s.n. Riverside 20 miles west of Blythe Comment
  RSA390015  Larrea tridentata J. C. Roos 1948-5-8 3817 Riverside Whitewater. 549 Comment
  RSA40564  Quercus wislizeni var. frutescens J. C. Roos 1947-1-4 s.n. Riverside North side Box Springs Mts, above Reche Canyon 488 Comment
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Jul 8 2017
  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
  RSA40570  Oenothera cespitosa subsp. marginata J. C. Roos 1947-4-5 3427 Riverside North base Santa Rosa Mountains, upper reaches of Deep canyon. Comment
  RSA40573  Eclipta prostrata J. C. Roos 1948-10-23 s.n. Riverside Mud at edge of shallow pool. Comment
  RSA40604  Phlox austromontana J. C. Roos 1946-8-27 2922 Riverside Santa Rosa Mountains. 2287 Comment
  RSA40605  Bahia dissecta J. C. Roos 1946-8-27 2923 Riverside Santa Rosa Mountains. 2287 Comment
  RSA40607  Baccharis brachyphylla J. C. Roos 1946-9-14 3008 Riverside Dry desert near Dos Palmos Spring, E of Asbestos Mountain. 1067 Comment
  RSA40608  Aster ascendens J. C. Roos 1946-9-14 3014 Riverside Thomas Valley 1375 Comment
  RSA40610  Sporobolus flexuosus J. C. Roos 1946-9-14 3021 Riverside East side of Asbestos Mountains 1067 Comment
  RSA40611  Sporobolus contractus J. C. Roos 1946-9-14 3028 Riverside 1 mile east of Pinyon Flats, Santa Rosa Mountains Comment
  RSA41275  Trisetum canescens J. C. Roos 1941-8-2 86 Riverside Dark Canyon. 2134 Comment
  RSA41282  Boerhavia wrightii J. C. Roos 1937-8-22 14 Riverside Colorado River, north of Blythe. Comment
  RSA41332  Bouteloua curtipendula J. C. Roos 1948-5-2 1122 Riverside Wonderland of Rocks, Joshua Tree National Monument. Comment
  RSA41335  Carex douglasii J. C. Roos 1943-10-16 2739 Riverside Little San Bernardino Mountains. 1372 Comment
  RSA425023  Ambrosia acanthicarpa J. C. Roos 1965-9-26 s.n. Riverside Hemet Valley, San Jacimto Mtns. Comment
  RSA431198  Dicoria canescens J. C. Roos 1957-12-26 6660 Riverside 6 miles NW of Thousand Palms, Coachella Valley. 152 Comment
  RSA431199  Dicoria canescens J. C. Roos 1957-11-30 6659 Riverside 6 mi NW of Thousand Palms. 152 Comment
  RSA431203  Baccharis brachyphylla J. C. Roos 1958-9-27 s.n. Riverside Carrizo Creek near Black Hhill, Santa Rosa Mtns 915 Comment
  RSA443546  Camissonia brevipes subsp. brevipes J. C. Roos 1966-3-20 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA444455  Fagonia laevis Roos 1965-6-23 s.n. Riverside Lost Palms Wash. Comment
  RSA444457  Pulicaria hispanica J. C. Roos 1965-6-23 s.n. Riverside Palm Springs. Comment
  RSA444458  Delphinium cardinale J. C. Roos 1965-6-19 s.n. Riverside Hagador Canyon: Skyline Drive south of Corona. Comment
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May 21 2011
  RSA444459  Ziziphus obtusifolia var. canescens J. C. Roos 1965-6-23 s.n. Riverside Lost Palms Wash. Comment
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Aug 19 2011
  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
  RSA444466  Antirrhinum nuttallianum subsp. nuttallianum L. Roos 1966-4-29 s.n. Riverside Hills between March Air Force Base and Lakeview; rocky crevices Comment
  RSA444475  Olneya tesota J. C. Roos 1965-12-4 s.n. Riverside 2 miles SE of Desert Center. 366 Comment
  RSA444478  Ditaxis lanceolata J. C. Roos 1965-6-23 s.n. Riverside Cactus City: just east of Mecca Hills on I-10 Comment
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Mar 20 2011
  RSA444479  Calochortus albus J. C. Roos 1960-5-30 s.n. Riverside Ridge between heads of Bedford Canyon and East Fork Ladd Canyon 1220 Comment
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May 20 2011
  RSA444482  Salvia eremostachya J. C. Roos 1947-3-15 3332 Riverside Santa Rosa Mountains: Dos Palmas Springs, NE of Asbestos Mt. Comment
  RSA444483  Salvia vaseyi J. C. Roos 1965-6-13 s.n. Riverside Santa Rosa Mountains: Pines to Palms Highway (74), below Dos Palmas Springs. 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
  RSA444666  Styrax redivivus J. C. Roos 1966-4-23 s.n. Riverside S of Corona. Assoc. with Quercus dumosa and Rhamnus ilicifolia. Comment
  RSA444678  Eclipta prostrata J. C. Roos 1965-7-5 s.n. Riverside Thermal Airport. Comment
  RSA444788  Garrya flavescens var. pallida J. C. Roos 1966-4-23 s.n. Riverside Skyline Drive, Santa Ana Mtns., above Corona. Comment
  RSA444789  Chamaesyce polycarpa J. C. Roos 1965-6-23 s.n. Riverside Cactus City, on I 10, 25 miles east of Indio. Comment
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May 21 2011
  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
  RSA444794  Solidago californica J. C. Roos 1952-8-27 5892 Riverside Haas Ranch, Reche Canyon 457 Comment
  RSA444807  Mimulus pilosus J. C. Roos 1952-6-8 5745 Riverside Common along damp sunny bank with Helianthus gracilentus, etc., summit of Reche Canyon near Ferndale school. Comment
  RSA44861  Salix laevigata J. C. Roos, L. Roos 1947-11-1 3758 Riverside Eagle Mountains, Lost Palms Canyon. Comment
  RSA44862  Ruta chalepensis J. C. Roos 1948-2-21 3771 Riverside Near spring with Baccharis wiminea and Emoryi, pass between Pigeon Pass and Reche Canyon. 457 Comment
  RSA44864  Galium angustifolium subsp. angustifolium J. C. Roos 1948-5-8 3819 Riverside Steep north-facing slope, Whitewater Canyon. 549 Comment
  RSA44865  Juncus xiphioides J. C. Roos 1948-5-15 3837 Riverside Lost Palms Canyon, Eagle Mountains., Colorado Desert. Comment
  RSA44868  Cercocarpus betuloides J. C. Roos 1948-5-15 3854 Riverside Upper Lost Palms Canyon, Eagle Mountains. Comment
  RSA44869  Juncus acutus subsp. leopoldii J. C. Roos 1948-5-15 3855 Riverside Lost Palms Canyon, Eagle Mountains., Colorado Desert. Comment
  RSA44915  Solanum umbelliferum J. C. Roos 1947-5-24 3646 Riverside Steep sandy road-fill, south of Banning 1159 Comment
  RSA44916  Amorpha fruticosa J. C. Roos 1947-5-10 3614 Riverside 3 miles SE of Console Springs., [Console Springs is in Riverside Co. near present-day Reche Cyn. Rd., ca. 33 d 59.5' N / 117 d 12.7' W. Roos's collection site was probably the wash just above Sunnymead. -S. D. White Mar 2007] Comment
  RSA449945  Hibiscus denudatus J. C. Roos 1958-2-22 s.n. Riverside 2 mi SE of Desert Center Comment
  RSA449946  Malacothrix clevelandii J. C. Roos 1950-4-22 4756 Riverside 0.3 mi NE of summit of Reche Canyon 762 Comment
  RSA449950  Boerhavia triquetra J. C. Roos 1965-9-26 s.n. Riverside Santa Rosa Mtns, above Palm Desert. 701 Comment
  RSA449954  Camissonia chamaenerioides J. C. Roos 1966-3-26 s.n. Riverside Rocky canyon 2 1/2 miles S.E. of Desert Center, Chuckwalla Mtns. Comment
  RSA449955  Camissonia strigulosa J. C. Roos 1965-6-13 s.n. Riverside Mountain Center, San Jacinto Mtns. Comment
  RSA449968  Linanthus filiformis J. C. Roos 1958-3-15 s.n. Riverside 3 miles SE of Desert Center, Chuckwalla Mtns. Comment
  RSA449969  Leptosiphon pygmaeus subsp. pygmaeus J. C. Roos 1950-4-22 4757 Riverside In the hills NE of the summit of Reche Canyon. 823 Comment
  RSA449970  Navarretia atractyloides J. C. Roos 1952-5-26 5724 Riverside Haas' ranch, Reche Canyon. 457 Comment
  RSA450053  Sorghum bicolor subsp. arundinaceum J. C. Roos 1965-10-25 s.n. Riverside Coachella: S of Indio. Comment
  RSA450072  Keckiella cordifolia J. C. Roos, L. Roos 1952-6-24 5786 Riverside In the hills west of Beaumont. Comment
  RSA450073  Veronica peregrina var. xalapensis J. C. Roos 1966-3-24 s.n. Riverside Near Edgemont. On the muddy edge of a vernal pool, assoc. with Callitriche. Comment
  RSA450075  Mimulus floribundus J. C. Roos 1952-4-29 5595 Riverside Pigeon, Box Springs Mts. 457 Comment
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May 21 2011
  RSA450097  Alchemilla occidentalis J. C. Roos 1950-4-22 4751 Riverside On the hills N.E. of the summit of Reche Canyon. 823 Comment
  RSA450099  Adenostoma sparsifolium J. C. Roos 1965-8-18 s.n. Riverside Summit of Pines to Palm Hwy., Thomas Valley, San Jacinto Mtns. Comment
  RSA450107  Astragalus nuttallianus var. imperfectus J. C. Roos 1958-3-15 s.n Riverside 3 miles SE of Desert Center, in the Chuckwalla Mtns. Comment
  RSA450112  Lotus rigidus J. C. Roos 1966-2-12 s.n. Riverside Chuckwalla Mtns., 2.5 miles SE of Desert Center Comment
  RSA450120  Psorothamnus emoryi J. C. Roos 1966-5-2 s.n. Riverside Palm Springs. Comment
  RSA450122  Psorothamnus schottii J. C. Roos 1966-5-2 s.n. Riverside Mouth of Pushwalla Canyon, Indio Mtns. Comment
  RSA450135  Sidalcea neomexicana J. C. Roos 1966-5-19 s.n. Riverside 3 miles west of San Jacinto, San Jacinto Valley Comment
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Feb 16 2009
  RSA450138  Mirabilis laevis var. crassifolia J. C. Roos 1966-9-20 s.n. Riverside San Jacinto. Comment
  RSA450140  Mirabilis laevis var. villosa J. C. Roos 1966-3-26 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA450147  Navarretia hamata J. C. Roos 1965-6-30 s.n. Riverside ortega Highway, Santa Ana Mtns. Comment
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May 21 2011
  RSA450156  Castilleja affinis J. C. Roos 1966-4-5 s.n. Riverside Winchester Comment
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Mar 20 2011
  RSA450174  Amorpha fruticosa J. C. Roos 1966-5-5 s.n Riverside Gilman Hot springs, San Jacinto Valley. Comment
  RSA450184  Pinus quadrifolia J. C. Roos 1965-8-18 s.n. Riverside Summit of Pines to Palm Hwy., Thomas Valley, San Jacinto Mtns. Comment
  RSA450197  Lotus heermannii J. C. Roos 1952-6-13 5768 Riverside Pigeon Pass. 427 Comment
  RSA450252  Eriogonum wrightii var. nodosum J. C. Roos 1967-10-28 s.n. Riverside Whitewater. 427 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
  RSA450305  Astragalus tricarinatus J. C. Roos 1948-5-8 3826 Riverside Whitewater. 518 Comment
  RSA450313  Eremocarpus setiger J. C. Roos 1965-7-27 s.n. Riverside Elsinore. Comment
  RSA450314  Microseris lindleyi J. C. Roos 1950-4-5 4721 Riverside N side of Pigeon Pass 427 Comment
  RSA450315  Lupinus bicolor J. C. Roos 1966-3-22 s.n. Riverside Edgemont. Comment
  RSA450316  Lupinus truncatus J. C. Roos 1948-4-24 3788 Riverside Cabazon. Comment
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Apr 3 2011
  RSA450413  Heterotheca sessiliflora var. sanjacintensis J. C. Roos 1965-8-18 s.n. Riverside Thomas Valley, San Jacinto Mtns. Comment
  RSA450415  Chrysothamnus paniculatus J. C. Roos 1965-11-6 s.n. Riverside Whitewater. 305 Comment
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Jan 14 2010
  RSA450421  Baileya pauciradiata J. C. Roos 1965-4-28 s.n. Riverside Palm Springs. Comment
  RSA450428  Gutierrezia californica J. C. Roos 1965-9-26 s.n. Riverside Rocky point near Palm Springs Station. Comment
  RSA450431  Hemizonia fasciculata J. C. Roos 1965-6-19 s.n. Riverside Skyline Drive, S of Corona Comment
  RSA450444  Cryptantha intermedia J. C. Roos 1950-4-22 4746 Riverside Pigeon Pass 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
  RSA450461  Bouteloua barbata J. C. Roos 1965-9-5 s.n. Riverside 18 miles W of Blythe. Comment
  RSA450463  Bromus catharticus A. R. Roos 1937-11-13 s.n. Riverside Riverside. 244 Comment
  RSA450464  Eragrostis mexicana subsp. virescens J. C. Roos 1965-7-7 s.n. Riverside San Jacinto. On the edge of alfalfa field. Comment
  RSA450469  Eriodictyon crassifolium J. C. Roos 1965-6-13 s.n. Riverside Palms to Pines Hwy., San Jacinto Mtns. Comment
  RSA450476  Salazaria mexicana J. C. Roos 1965-6-13 s.n. Riverside Santa Rosa Mountains: Dos Palmas Springs. Comment
  RSA450480  Gutierrezia sarothrae J. C. Roos 1965-6-21 s.n. Riverside the hills 2 miles S of Beaumont Comment
  RSA450482  Peucephyllum schottii J. C. Roos 1966-2-5 s.n. Riverside Pushawalla Wash near 1000 Palms, Indio Hills. Comment
  RSA450483  Corethrogyne filaginifolia J. C. Roos 1965-8-19 s.n. Riverside Beaumont. Comment
  RSA450495  Hulsea vestita subsp. callicarpha J. C. Roos 1965-9-13 s.n. Riverside W of Mountain Center, San Jacinto Mts. Comment
  RSA450644  Achnatherum speciosum J. C. Roos 1965-6-13 sn. Riverside San Jacinto Valley, Valle Vista (east of Hemet). Comment
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Mar 27 2011
  RSA450654  Sporobolus cryptandrus J. C. Roos 1965-8-15 s.n. Riverside Gilman Hot Springs, San Jacinto Valley. Comment
  RSA450741  Layia platyglossa subsp. platyglossa J. C. Roos 1965-6-13 s.n. Riverside Mountain Center, San Jacinto Mtns. Comment
  RSA450760  Bahiopsis parishii J. C. Roos 1965-9-26 s.n. Riverside Santa Rosa Mtns. 701 Comment
  RSA450761  Baccharis emoryi J. C. Roos 1965-10-7 s.n. Riverside Fairmont Park Comment
  RSA450762  Machaeranthera asteroides var. asteroides J. C. Roos 1965-10-5 s.n. Riverside Hemet. Comment
  RSA450763  Pulicaria hispanica J. C. Roos 1965-8-2 s.n. Riverside Palm Springs: along irrigation ditch on Vista del Chino, between Sunrise Way and Caballeros Ave. 122 Comment
  RSA450767  Ambrosia ilicifolia J. C. Roos 1958-3-15 s.n. Riverside 2.5 mi. SE of Desert Center, Chuckwalla Mts. Comment
  RSA450769  Atrichoseris platyphylla J. C. Roos 1966-3-26 s.n. Riverside 2 mi S.E. of Desert Center. Comment
  RSA45204  Nolina parryi J. C. Roos, L. Roos 1949-4-23 4282 Riverside Monson Canyon, Eagle Mountains. Comment
  RSA45205  Hordeum marinum subsp. gussoneanum J. C. Roos, Lucille Roos 1949-5-21 4318 Riverside Temecula. 304 Comment
  RSA45211  Dudleya saxosa subsp. aloides J. C. Roos, L. Roos 1949-4-23 4285 Riverside Monson Canyon, Eagle Mountains. Comment
  RSA45213  Tridens muticus J. C. Roos 1949-4-23 4286 Riverside W side of mouth of Lost Palms wash, N of Shaver's summit, S foot Eagle Mts, Riverside County Comment
  RSA45222  Monoptilon bellioides J. C. Roos, Lucille Roos 1949-3-19 4100 Riverside Southeast foot Orocopia Mountains, about 5 miles northeast of Dos Palmos Spring Comment
  RSA45224  Salvia greatae L. Roos 1949-4-6 4154 Riverside Mouth of rocky canyon, south foot Chocolate Mtns., north of Pope. 91 Comment
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May 26 2015
  RSA45227  Salvia greatae J. C. Roos 1949-3-19 4101 Riverside Salt Creek Wash, about 7 miles northeast of Dos Palmos Spring. Comment
  RSA45506  Gilia stellata J. C. Roos, L. Roos 1949-4-10 4226 Riverside 3.5 mi. SE of Desert Center, Chuckwalla Mountains. 610 Comment
  RSA45507  Astragalus nutans L. C. Roos, John C. Roos 1949-4-10 4228 Riverside Chuckawalla Mts. about 3.5 miles southeast of Desert Center. Comment
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May 26 2015
  RSA45510  Calycoseris wrightii J. C. Roos, L. Roos 1949-4-9 4209 Riverside 30 mi. N of Blythe, near Riverside Mts Comment
  RSA45513  Nama hispida var. spathulata J. C. Roos 1949-4-9 4203 Riverside 3 mi. N.E. of Desert Center. 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
  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
  RSA45543  Colubrina californica J. C. Roos 1949-4-10 4231 Riverside 3.5 mi. SE of Desert Center, Chuckwalla Mountains. 610 Comment
  RSA457396  Agrostis exarata A. R. Roos 1937-8-19 10694 Riverside Idyllwild, San Jacinto Mountains. Comment
  RSA457405  Aristida purpurea var. purpurea J. C. Roos 1965-9-26 s.n. Riverside Palm Springs. 122 Comment
  RSA47454  Tiquilia canescens J. C. Roos 1949-4-11 4243 Riverside Mouth of Lost Palms Wash, S foot Eagle Mt. 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
  RSA48867  Baccharis salicifolia J. C. Roos 1949-9-17 4658 Riverside Oasis, Whitewater Wash, 2.2 miles N of Hwy 99 518 Comment
  RSA48878  Baccharis salicifolia J. C. Roos 1949-9-21 4664 Riverside Reche Canyon, 2.7 miles south of Hollow Hill Dairy 457 Comment
  RSA48880  Epilobium canum subsp. latifolium L. Roos 1949-9-17 4661 Riverside Palm oasis, side canyon on east side Whitewater Wash on west slope of Painted Hill, 2.2 mi. north of Hwy 99. 610 Comment
  RSA52803  Ancistrocarphus filagineus J. C. Roos 1950-4-29 4773 Riverside Reche Canyon near Console Springs. 610 Comment
  RSA591729  Euonymus occidentalis J. C. Roos 1965-7-3 s.n. Riverside Dark Canyon, San jacinto Mtns. Comment
  RSA591746A  Nemacladus orientalis J. C. Roos 1966-3-26 s.n. Riverside 2 mi S.E. of Desert Center. Comment
  RSA591749  Silene laciniata subsp. major J. C. Roos 1965-6-19 s.n. Riverside Skyline Drive, S of Corona Comment
  RSA591763  Atriplex coronata var. notatior J. C. Roos 1965-6-30 s.n. Riverside Perris. Comment
  RSA591812  Marah macrocarpa J. C. Roos 1966-4-23 s.n. Riverside Santa Ana Mtns. S of Corona Comment
  RSA592423  Callitriche marginata J. C. Roos 1966-3-6 s.n. Riverside Across 395 from March Air Force Base. Comment
  RSA648065  Pleurocoronis pluriseta J. C. Roos 1946-10-26 3141 Riverside Chuckwalla Mtns. Comment
  RSA648067  Nama hispida var. spathulata J. C. Roos 1949-4-9 4203 Riverside 3 mi. N.E. of Desert Center. Comment
  RSA648069  Muhlenbergia asperifolia J. C. Roos 1946-9-14 3002 Riverside Dos Palmas Springs east of Asbestos Mt. 1066 Comment
  RSA648667  Kallstroemia californica J. C. Roos 1963-10-24 s.n. Riverside Hayfields, Colorado Desert. Comment
  RSA648673  Vulpia microstachys var. pauciflora J. C. Roos 1952-3-2 5464 Riverside Box Springs grade east of Riverside. 426 Comment
  RSA648674  Aristida adscensionis J. C. Roos 1946-10-26 3143 Riverside in the Chuckwalla Mtns., Colorado Desert. Comment
  RSA648734  Nolina bigelovii J. C. Roos 1948-5-15 3852 Riverside Lost Palms Canyon, Eagle Mountains., Colorado Desert. Comment
  RSA648741  Alnus rhombifolia J. C. Roos 1948-5-8 3828 Riverside Along stream at Whitewater. 518 Comment
  RSA649668  Phalaris lemmonii J. C. Roos 1966-3-24 s.n. Riverside Winchester (near Hemet) Comment
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Mar 20 2011
  RSA658434  Navarretia fossalis J. C. Roos 1952-5-28 5729 Riverside San Jacinto River bottomland 1 mile south-east of Perris. 427 Comment
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Aug 8 2008
  RSA658704  Eremogone ferrisiae J. C. Roos 1965-7-22 s.n. Riverside Thomas Valley, San Jacinto Mtns. Comment
  RSA658860  Phacelia distans J. C. Roos 1966-3-20 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA659478  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
  RSA659480  Mirabilis laevis var. villosa J. C. Roos 1966-3-26 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA659484  Rumex hymenosepalus J. C. Roos 1966-4-29 s.n. Riverside In the hills between March AFB and Lakeview. 457 Comment
  RSA659485  Plantago ovata var. fastigiata J. C. Roos 1966-3-20 s.n. Riverside 2 miles SE of Desert Center. Comment
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Dec 17 2011
  RSA659490  Stillingia spinulosa J. C. Roos 1949-3-26 4120 Riverside Coachella Valley, Indio. Comment
  RSA659515  Datura discolor J. C. Roos 1965-11-6 s.n. Riverside Colorado Desert, 26 miles west of Blythe. Comment
  RSA659516  Nicotiana obtusifolia J. C. Roos 1966-2-5 s.n. Riverside Pushawalla Wash near 1000 Palms, Indio Hills. Comment
  RSA659517  Oenothera deltoides J. C. Roos 1966-3-12 s.n. Riverside Indio. Comment
  RSA659606  Lithophragma affine J. C. Roos, L. Roos 1954-4-17 6067 Riverside Canyon SE of summit of Reche Canyon. 686 Comment
  RSA659608  Salix laevigata J. C. Roos 1952-2-18 5351 Riverside At west end of Fairmount Park, Riverside. 259 Comment
  RSA659609  Salix exigua J. C. Roos 1947-2-15 3244 Riverside Lost Palms Canyon. Comment
  RSA659617  Aristida purpurea J. C. Roos 1965-9-26 s.n. Riverside Palm Springs. 122 Comment
  RSA659618  Aristida purpurea J. C. Roos 1965-8-15 s.n. Riverside Gilman Hot Springs, San Jacinto Valley. Comment
  RSA659623  Plagiobothrys leptocladus J. C. Roos 1952-4-23 5572 Riverside 1 miles southeast of Perris. 427 Comment
  RSA659632  Panicum hirticaule subsp. hirticaule J. C. Roos 1965-9-5 s.n. Riverside 18 mi W. of Blythe. Comment
  RSA659661  Chamaesyce albomarginata J. C. Roos 1951-9-25 5269 Riverside Fairmount 259 Comment
  RSA659663  Euphorbia setiloba J. C. Roos 1947-11-1 3756 Riverside On the edge of Lost Palms wash, Eagle Mtns. Comment
  RSA659687  Cryptantha micrantha var. lepida J. C. Roos 1947-5-24 6194 Riverside San Jacinto Mtns., at the junction of Dark Canyon Camp Road with Idyllwild to Banning Road. Comment
  RSA659689  Pectocarya linearis J. C. Roos 1952-2-29 5371 Riverside Reche Canyon. 457 Comment
  RSA659691  Plagiobothrys collinus var. californicus J. C. Roos 1952-2-29 5368 Riverside Reche Canyon. 457 Comment
  RSA659696  Silene laciniata J. C. Roos 1965-6-19 s.n. Riverside Skyline Drive, S of Corona Comment
  RSA659708  Euonymus occidentalis J. C. Roos 1965-7-3 s.n. Riverside Dark Canyon, San jacinto Mtns. Comment
  RSA659711  Helianthus niveus J. C. Roos 1965-4-28 s.n. Riverside Palm Springs. 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
  RSA659768  Astragalus didymocarpus J. C. Roos 1952-4-30 5606 Riverside Hills between Camp Haan and Riverside 518 Comment
  RSA659769  Plagiobothrys canescens var. canescens J. C. Roos 1952-4-30 5605 Riverside Hills between Camp Haan and Riverside 518 Comment
  RSA659770  Leptochloa fusca subsp. uninervia J. C. Roos, L. Roos 1951-10-24 5332 Riverside Flats between Arlington and Pedley 229 Comment
  RSA659773A  Nemacladus glanduliferus J. C. Roos 1947-3-15 3354 Riverside Mouth of Deep Canyon. Santa Rosa Mtns 366 Comment
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Apr 3 2011
  RSA659780  Nemacladus ramosissimus J. C. Roos, L. Roos 1952-4-28 5591 Riverside Box Springs Mtns. 396 Comment
  RSA659788  Trifolium variegatum J. C. Roos 1952-5-26 5714 Riverside Hass' Ranch. Reche Canyon. 457 Comment
  RSA659789  Lupinus arizonicus J. C. Roos 1947-2-15 3268 Riverside Lost Palms Cyn. S face of Eagle Mtns., west of Hayfeilds. Comment
  RSA662070  Astragalus nuttallianus J. C. Roos 1958-3-15 s.n. Riverside 3 miles SE of Desert Center, Chuckwalla Mtns. Comment
  RSA662416  Wyethia ovata J. C. Roos 1965-7-22 s.n. Riverside Thomas Valley, San Jacinto Mtns. Comment
  RSA662538  Trifolium amplectens J. C. Roos 1966-3-24 s.n. Riverside Flats west of Hemet. 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
  RSA664936  Eremocarpus setiger J. C. Roos 1965-7-27 s.n. Riverside Elsinore. Comment
  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
  RSA664941  Baccharis brachyphylla J. C. Roos 1963-10-19 s.n. Riverside San Bernardino Mtns. Whitewater Wash near Painted Hill. 581 Comment
  RSA69814  Muhlenbergia asperifolia J. C. Roos 1951-9-25 5257 Riverside West end Fairmount Park 259 Comment
  RSA69817  Bidens frondosa J. C. Roos 1951-9-25 5265 Riverside Fairmount Park 259 Comment
  RSA69827  Aster bernardinus J. C. Roos 1951-10-19 5323 Riverside San Timoteo Canyon, El Casco. 610 Comment
  RSA69828  Brickellia californica J. C. Roos 1951-10-19 5324 Riverside Badlands at Old Jackrabbit trail 610 Comment
  RSA69829  Petunia parviflora J. C. Roos 1951-10-19 5327 Riverside San Jacinto Valley near south end of Old Jackrabbit Trail. 457 Comment
  RSA69830  Machaeranthera asteroides J. C. Roos 1951-10-19 5330 Riverside Gilman Hot Springs 459 Comment
  RSA69831  Brickellia desertorum J. C. Roos 1951-10-19 5328 Riverside Gilman Hot Springs 459 Comment
  RSA69836  Leersia oryzoides J. C. Roos, L. Roos 1951-10-24 5345 Riverside Outlet of Fairmount Park Lake 259 Comment
  RSA69872  Panicum capillare J. C. Roos 1951-9-25 5255 Riverside Fairmount Park 259 Comment
  RSA70123  Sporobolus indicus var. indicus J. C. Roos, L. Roos 1951-9-25 5277 Riverside Fairmount Park 259 Comment
  RSA74576  Centaurea repens J. C. Roos 1947-7-5 2908 Riverside Junction of San Timoteo and Live Oak Creeks. 457 Comment
  RSA77259  Muhlenbergia minutissima J. C. Roos, L. Roos 1952-10-18 5903 Riverside Hidden Valley Campground 1220 Comment
  RSA78222  Boerhavia intermedia J. C. Roos, L. Roos 1952-10-18 5901 Riverside Hidden Valley Campground 1220 Comment
  RSA78223  Sporobolus cryptandrus J. C. Roos 1952-10-18 5902 Riverside Hidden Valley Campground 1220 Comment
  RSA78225  Nolina parryi J. C. Roos, L. Roos 1952-10-18 5904 Riverside Hidden Valley Campground 1220 Comment
  RSA78368  Brickellia desertorum J. C. Roos 1950-12-2 5029 Riverside Monson Canyon, Eagle Mts. 915 Comment
  RSA78374  Baccharis brachyphylla J. C. Roos 1950-12-2 5028 Riverside Monson Canyon, Eagle Mountains. 1067 Comment
  RSA78375  Bernardia incana J. C. Roos 1950-12-2 5027 Riverside Monson Canyon, Eagle Mountains. 1067 Comment
  RSA85080  Astragalus didymocarpus J. C. Roos 1952-4-9 850 Riverside Fairmount Park 259 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
  RSA85088  Chamaesyce polycarpa J. C. Roos 1952-4-9 5496 Riverside Scattered along dry sunny roadside with Avena barbata, Muhlenbergia microsperma, etc., southeast face Mt. Rubidoux. 335 Comment
  RSA85090  Phacelia distans J. C. Roos 1952-4-9 5493 Riverside Riverside, W face of Mt. Rubidoux. 400 Comment
  RSA85094  Trifolium depauperatum var. truncatum J. C. Roos 1952-4-2 5458 Riverside Edgemont. 488 Comment
  RSA85099  Filago californica J. C. Roos 1952-4-9 5510 Riverside Scattered along dry sunny roadside with Avena barbata, Muhlenbergia microsperma, etc., southeast face Mt. Rubidoux. 335 Comment
  RSA85100  Filago californica J. C. Roos 1952-4-13 5528 Riverside Box Springs Mts. 488 Comment
  RSA85102  Sanicula bipinnatifida J. C. Roos 1952-4-29 5599 Riverside Reche Canyon 457 Comment
  RSA85103  Trifolium microcephalum J. C. Roos 1952-4-29 5600 Riverside Reche Canyon. 457 Comment
  RSA85105  Juncus bufonius J. C. Roos 1952-4-30 5602 Riverside Between Camp Haan and Riverside 534 Comment
Read comments
Feb 20 2007
  RSA85112  Plagiobothrys leptocladus J. C. Roos 1952-4-23 5572 Riverside 1 miles southeast of Perris. 427 Comment
  RSA85113  Trifolium gracilentum J. C. Roos 1952-4-30 5609 Riverside Hills between Camp Haan and Riverside 518 Comment
  RSA85115  Microseris lindleyi J. C. Roos 1952-4-30 5610 Riverside Between Camp Haan and Riverside 534 Comment
  RSA85116  Gilia angelensis J. C. Roos 1952-4-2 5460 Riverside Box Springs Comment
  RSA85117  Gilia capitata subsp. abrotanifolia J. C. Roos, Lucille Roos 1952-4-27 5585 Riverside San Timoteo Canyon south of Redlands. 427 Comment
  RSA85121  Clarkia epilobioides J. C. Roos 1952-5-7 5618 Riverside Box Springs Mountains, north of Canyon Crest Heights 488 Comment
  RSA85146  Guillenia lasiophylla J. C. Roos 1952-4-9 5500 Riverside Mt Rubidoux. 396 Comment
  RSA85153  Myosurus minimus subsp. apus J. C. Roos 1952-4-9 5515 Riverside Edgemont near Box Springs. 488 Comment
  RSA85157  Camissonia intermedia J. C. Roos 1952-4-16 5546 Riverside Reche Canyon. 457 Comment
  RSA85405  Silene antirrhina J. C. Roos, L. Roos 1952-4-28 5590 Riverside Box Springs Mtns. 396 Comment
  RSA85407  Nemacladus ramosissimus J. C. Roos, L. Roos 1952-4-28 5591 Riverside Box Springs Mtns. 396 Comment
  RSA85439  Dryopteris arguta J. C. Roos 1952-4-13 5519 Riverside Box Springs Mts. 518 Comment
  RSA85440  Linaria canadensis var. texana J. C. Roos 1952-4-9 5504 Riverside north side of Mt. Rubidoux 381 Comment
  RSA85441  Aristida adscensionis var. modesta J. C. Roos 1952-4-9 5508 Riverside SW face Mountain Rubidoux. 366 Comment
  RSA85442  Crassula solieri J. C. Roos 1952-4-9 5514 Riverside Edgemont, near Box Springs 488 Comment
  RSA85443  Antirrhinum nuttallianum subsp. nuttallianum J. C. Roos 1952-4-13 5517 Riverside Box Springs Mts., above Canyon Crest Heights. 457 Comment
  RSA85446  Lotus argophyllus var. argophyllus J. C. Roos 1952-4-13 5522 Riverside Dry ridge on Box Springs Mtns. 488 Comment
  RSA85449  Stellaria nitens J. C. Roos 1952-4-13 5531 Riverside North side of Box Canyon 396 Comment
  RSA85453  Elatine brachysperma J. C. Roos 1952-4-16 5539 Riverside Edgemont, near Box Springs. Comment
  RSA85454  Callitriche marginata J. C. Roos 1952-4-16 5540 Riverside Edgemont, near Box Springs. 488 Comment
  RSA85460  Sphaeralcea ambigua subsp. ambigua J. C. Roos 1952-4-16 5542 Riverside Box Springs 488 Comment
  RSA85463  Deschampsia danthonioides var. gracilis J. C. Roos 1952-4-16 5543 Riverside Edgemont, near Box Springs. 488 Comment
  RSA85472  Stylomecon heterophylla J. C. Roos 1952-4-16 5553 Riverside Edgemont, near Box Springs. 488 Comment
  RSA85478  Encelia californica J. C. Roos 1952-4-16 5557 Riverside Box Springs Mountains, Pigeon Pass. 396 Comment
  RSA85485  Mimulus brevipes J. C. Roos, Lucille Roos 1952-4-19 5562 Riverside Box Springs Mtns. 457 Comment
  RSA85503  Microseris douglasii subsp. douglasii J. C. Roos 1952-4-23 5573 Riverside 1 mile southeast of Perris 427 Comment
  RSA85506  Ceanothus leucodermis J. C. Roos 1952-4-23 5574 Riverside 1/2 mi. southwest of Highgrove. 305 Comment
  RSA85515  Epilobium ciliatum subsp. ciliatum J. C. Roos 1952-4-23 5577 Riverside West side Box Springs Mountains above Canyon Crest Heights. 457 Comment
  RSA85521  Cirsium occidentale var. californicum J. C. Roos 1952-4-27 5586 Riverside San Timoteo Canyon south of Redlands. 427 Comment
  RSA85571  Medicago polymorpha var. brevispina J. C. Roos 1952-4-9 5487 Riverside Fairmount Park. 259 Comment
  RSA85572  Melica frutescens J. C. Roos 1952-4-9 5492 Riverside Mt. Rubidoux 396 Comment
  RSA85573  Achnatherum speciosum J. C. Roos 1952-4-9 5495 Riverside SW face Mountain Rubidoux. 366 Comment
  RSA85574  Aspidotis californica J. C. Roos 1952-4-9 5499 Riverside north side of Mt. Rubidoux 381 Comment
  RSA85577  Muilla maritima J. C. Roos 1952-4-2 5456 Riverside At Edgemont near Box Springs. 488 Comment
  RSA85578  Lomatium vaginatum J. C. Roos 1952-4-2 5455 Riverside At Edgemont near Box Springs. 488 Comment
  RSA85580  Plantago erecta J. C. Roos 1952-4-2 5461 Riverside Box Springs. 488 Comment
  RSA85582  Vulpia microstachys var. pauciflora J. C. Roos 1952-4-2 5464 Riverside Box Springs grade east of Riverside. 427 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
  RSA85585  Lotus wrangelianus J. C. Roos 1952-4-9 5478 Riverside Fairmount Park 259 Comment
  RSA85586  Poa secunda J. C. Roos 1952-4-2 5453 Riverside At Edgemont near Box Springs. 488 Comment
  RSA85587  Lotus strigosus J. C. Roos 1952-4-9 5479 Riverside Fairmount Park 259 Comment
  RSA85878  Astragalus didymocarpus var. obispoensis J. C. Roos 1952-4-30 5606 Riverside Hills between Camp Haan and Riverside 518 Comment
  RSA89866  Soliva sessilis J. C. Roos, Lucille Roos 1953-5-9 5916 Riverside Riverside, Fairmont Park. 259 Comment
  RSA89870  Brickellia desertorum J. C. Roos 1950-9-30 4996 Riverside Box Springs Grade 0.5 mile SE of Citrus Experiment Station Riverside. 396 Comment
  RSA89873  Brickellia desertorum J. C. Roos, L. Roos 1950-9-30 4994 Riverside N base of Pigeon Pass, Box Springs Mts. 457 Comment
  RSA89879  Brickellia desertorum J. C. Roos, L. Roos 1950-10-14 5006 Riverside E end Jurupa Hills, near corner of Alta & Canal Sts. 305 Comment
  RSA89881  Baccharis sarothroides J. C. Roos 1950-10-28 5021 Riverside Box Springs. 473 Comment
  RSA89959  Gnaphalium canescens J. C. Roos 1950-10-21 5014 Riverside Wonderland of Rocks [Joshua Tree National Park] 1220 Comment
  RSA89964  Heterotheca horrida subsp. cinerascens J. C. Roos, L. Roos 1950-10-21 5011 Riverside Wonderland of Rocks [Joshua Tree National Park]; Little San Bernardino Mts. 1220 Comment
  RSA89967  Baccharis brachyphylla J. C. Roos 1950-10-15 5008 Riverside San Bernardino Mtns. Dry Morongo Canyon, c. l mi south of Riverside-San Bernardino county line. 612 Comment
  SBBG53851  Crassula aquatica J. C. Roos 1952-4-9 5514 Riverside rolling flats at Edgemont, near Box Springs 487 Comment
  SD121286  Aristida purpurea var. parishii J. C. Roos 1966-4-29 Riverside Rocky hills between March AFB and Lakeview, crevices in the rock slopes. Comment
  SD126648  Cuscuta californica var. papillosa J. C. Roos 1946-12-7 3184 Riverside Pushawalla Wash Comment
  SD132541  Equisetum telmateia subsp. braunii John C. Roos 1952-6-25 5794 Riverside Riverside, Fairmount Park, west end 259 Comment
  SD167194  Cryptantha barbigera var. fergusoniae J. C. Roos 1948-4-24 3807 Riverside East San Bernardino Mountains/Sopnoran Desert; Whitewater Wash. 518 Comment
  SEINET10280031 Image available Eriogonum gracile John C. Roos 1952-8-27 5888 Riverside Peninsular Range; Riverside; Pigeon Pass, Box Springs Mountains. 457 Comment
  SEINET14198934  Aristida purpurea J. C. Roos 1965-9-26 Riverside Palm Springs, in a parkway 122 Comment
  SEINET14214762  Aristida purpurea J. C. Roos 1965-8-15 Riverside Gilman Hot Springs, San Jacinto Valley Comment
  SEINET244838 Image available Aristida purpurea J. C. Roos 1949-4-8 4198 Riverside Imperial Co., Calif. Comment
  SEINET3089934 Image available Chamaesyce polycarpa J. C. Roos 1947-11-1 3755 Riverside Eagle Mountains, edge of Lost Palms Wash. Comment
  SEINET3931219  Atriplex coronata var. notatior John Roos 1952-1 Riverside Comment
  SEINET4310261 Image available Lomatium lucidum J. C. Roos 1965-1 Riverside Sky Line Drive, S. of Corona, Santa Ana Mts. Comment
  SEINET5554570  Hoffmannseggia glauca J. C. Roos 1965-1 s.n. Riverside 17 mi W of Blythe Colorado Desert Comment
  SEINET8467245 Image available Allium peninsulare J. C. Roos 1948-5-22 3865 Riverside In a canyon SE of the summit of Reche Canyon 732 Comment
  SEINET880825  Stillingia spinulosa J. C. Roos 1965-1 s.n. Riverside Dillon Road in Desert Hot Springs. 305 Comment
  SEINET9255224 Image available Croton californicus J. C. Roos 1965-6-23 Riverside Palm Springs Comment
  UC1010215  Quercus cornelius-mulleri John C. Roos 1946-9-14 3018 Riverside e of Asbestos Mtn.; Santa Rosa Mts., Dos Palmos Spring 1066 Comment
  UC1010231  Prunus fremontii John and Lucille Roos 1953-3-21 5908 Riverside S of Palm Springs (Andreas Canyon, mouth of) 274 Comment
  UC1010263  Sphaeralcea ambigua var. ambigua John C. Roos 1952-4-16 5542 Riverside Box Springs 487 Comment
  UC1010264  Quercus wislizeni var. frutescens John C. Roos 1952-4-13 5518 Riverside Box Springs Mts. 518 Comment
  UC1010309  Brickellia desertorum John and Lucille Roos 1950-9-9 4986 Riverside Mt. Rubidoux 396 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
  UC1010319  Baccharis brachyphylla John C. Roos 1950-10-15 5008 Riverside about 1 mi s of Riverside-San Bernardino County line Dry Morongo Canyon 609 Comment
  UC1010321  Brickellia desertorum John and Lucille Roos 1950-10-28 5020 Riverside 1 mi se of Moreno (n base of Mt. Russell); Mt. Russell 548 Comment
  UC1010322  Baccharis sarothroides John and Lucille Roos 1950-10-28 5021 Riverside near Box Springs 472 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
  UC1023393  Bromus trinii John and Lucille Roos 1953-3-21 5909 Riverside s of Palm Springs (mouth of Andreas Canyon); Andreas Canyon 274 Comment
  UC1023427  Soliva sessilis John and Lucille Roos 1953-5-9 5916 Riverside Fairmount Park 259 Comment
  UC1026576  Ancistrocarphus filagineus John and Lucille Roos 1954-5-11 6118 Riverside Reche Canyon 609 Comment
  UC1026579  Marsilea vestita subsp. vestita John C. Roos 1952-5-21 5704 Riverside 1 1/2 mi se Perris (San Jacinto river bottomland) 426 Comment
  UC1026580  Setaria verticillata John C. Roos 1952-5-14 5660 Riverside corner Iowa Ave. & 8th. St. e. of Riverside 304 Comment
  UC1042975  Malacothrix clevelandii John and Lucille Roos 1954-5-15 6119 Riverside summit Reche Canyon; summit Reche Canyon 731 Comment
  UC1042990  Malosma laurina John and Lucille Roos 1954-7-10 6191 Riverside n. side Pigeon Pass; Box Springs Mts. 487 Comment
  UC1043018  Bromus trinii John and Lucille Roos 1952-5-24 5711 Riverside hills n of Moreno 518 Comment
  UC1043020  Phalaris paradoxa John C. Roos 1952-5-21 5702 Riverside 1 1/2 mi se Perris; San Jacinto River bottomland 426 Comment
  UC1043023  Brodiaea filifolia John C. Roos 1952-5-14 5667 Riverside San Jacinto River bottom 1 mi E of Ferris 426 Comment
  UC1043024  Loeflingia squarrosa var. squarrosa John C. Roos 1952-5-14 5664 Riverside along roadside 2 mi nw Perris 487 Comment
  UC1043025  Epilobium campestre John C. Roos 1952-5-14 5662 Riverside near Box Springs; Edgemont 487 Comment
  UC1494264  Gilia filiformis J. C. Roos 1958-3-15 Riverside 3 mi se Desert Center (Chuckwalla Mtns.); , se of Desert Center Comment
  UC1519870  Atriplex muelleri J. C. Roos 1965-10-17 Riverside on the roadside 20 mi w Blythe; w of Blythe Comment
  UCD103135  Erodium brachycarpum J. C. Roos 1966-3-22 s.n. Riverside Edgemont. Comment
  UCD124725  Veronica persica J. C. Roos 1965-6-21 s.n. Riverside In a park lawn. Comment
  UCD128573  Acroptilon repens J. C. Roos 1951-10-24 5335 Riverside Between Arlington and Pedley. 228 Comment
  UCD128668  Amauriopsis dissecta J. C. Roos 1946-8-24 2923 Riverside Santa Rosa Mountains. 2286 Comment
  UCD129391  Baccharis brachyphylla J. C. Roos 1946-9-14 3008 Riverside near Dos Palmos Spring. East of Asbestos Mountain. 1066 Comment
  UCD129619  Brickellia atractyloides var. arguta J. C. Roos 1948-5-1 3813 Riverside Whitewater. 1066 Comment
  UCD129703  Brickellia californica J. C. Roos 1937-10-3 Riverside In Temescal Canyon. Comment
  UCD130366  Chaenactis glabriuscula var. lanosa J. C. Roos 1966-4-29 s.n. Riverside between March AFB and Lakeview. Comment
  UCD130386  Chaenactis glabriuscula var. glabriuscula J. C. Roos 1937-4-18 s.n. Riverside Cabazon. Comment
  UCD131261  Dieteria canescens var. canescens J. C. Roos 1965-10-5 s.n. Riverside Exact location unknown. Comment
  UCD132129  Eriophyllum multicaule J. C. Roos 1948-5-22 3866 Riverside San Timoteo Canyon, south of Redlands. Comment
  UCD133099  Heterotheca villosa J. C. Roos 1965-9-16 s.n. Riverside on State St. near Florida St, Hemet. Comment
  UCD134970  Pleurocoronis pluriseta J. C. Roos 1966-3-10 s.n. Riverside 3 miles southwest of Desert Center, Chuckwalla Mtns. Comment
  UCD56512  Aristida purpurea J. C. Roos 1965-8-15 s.n. Riverside San Jacinto Valley, Gilman Hot Springs. Comment
  UCD65680  Eriochloa aristata J. C. Roos 1965-9-26 Riverside In Indio. Comment
  UCD65712  Eriochloa acuminata A. R. Roos 1937-11-28 Riverside East Washington St., Riverside. Comment
  UCD65733  Eriochloa contracta J. C. Roos 1963-8-10 Riverside Blythe. Comment
  UCD97041  Trianthema portulacastrum J. C. Roos 1965-9-5 s.n. Riverside 18 miles west of Blythe. Comment
  UCR10926  Camissonia boothii John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns, rocky canyon 2.5 miles SE of Desert Center 610 Comment
  UCR157719  Cryptantha barbigera var. fergusoniae John C. Roos 1948-4-24 3807 Riverside Eastern San Bernardino Mtns./Sonoran (Colorado) Desert, Whitewater Wash 549 Comment
  UCR17542  Crypsis vaginiflora John C. Roos 1952-6-4 5735 Riverside San Jacinto River Valley, San Jacinto river bottomland 1.5 mi SE of Perris 427 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
Read comments
Apr 24 2011
  UCR18572  Senecio californicus John C. Roos 1966-4-5 s.n. Riverside Winchester Comment
  UCR18574  Brickellia desertorum John C. Roos 1965-9-12 s.n. Riverside Santa Ana Mtns., Tin Mine Canyon, 3 mi SW of Corona 550 Comment
  UCR18575  Brickellia nevinii John C. Roos 1965-9-12 s.n. Riverside Santa Ana Mtns., Tin Mine Canyon, 3 mi SW of Corona 550 Comment
  UCR18583  Ambrosia ilicifolia John C. Roos, Lucille Roos 1949-4-10 4230 Riverside Sonoran (Colorado) Desert, Chuckwalla Mts, canyon 3.5 mi. SE of Desert Center 612 Comment
  UCR18592  Acer negundo John C. Roos 1952-6-25 5790 Riverside Thickets at W end of Fairmont Park, Riverside 260 Comment
  UCR18593  Tetradymia comosa John C. Roos, L. Roos 1952-7-8 5808 Riverside Reche Canyon 488 Comment
  UCR18624  Aster bernardinus John C. Roos 1951-10-19 5323 Riverside San Timoteo Canyon, El Casco 612 Comment
  UCR18625  Perityle emoryi John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns, rocky canyon 2.5 miles SE of Desert Center 610 Comment
  UCR18627  Pulicaria paludosa John C. Roos 1962-10-19 s.n. Riverside Western Colorado Desert/ San Bernardino Mtns., Whitewater 549 Comment
  UCR18630  Trifolium truncatum John C. Roos 1952-4-2 5458 Riverside Edgemont 488 Comment
  UCR18656  Brodiaea filifolia John C. Roos 1952-5-14 5667 Riverside Perris-Aguanga Basin region, 1 mi east of Perris along the San Jacinto River 427 Comment
  UCR18660  Haplopappus squarrosus John C. Roos 1952-8-27 5890 Riverside Reche Canyon, Haas Ranch 457 Comment
  UCR18662  Psilocarphus brevissimus var. brevissimus John C. Roos 1952-4-30 5601 Riverside Edgemont, near Box Springs 488 Comment
  UCR18663  Solidago californica John C. Roos 1952-8-27 5892 Riverside Reche Canyon, Haas Ranch 457 Comment
  UCR18739  Amaranthus powellii John C. Roos 1965-9-28 s.n. Riverside San Jacinto Valley, Hemet Comment
  UCR18763  Berberis dictyota John C. Roos 1947-1-4 3197 Riverside Reche Canyon 488 Comment
  UCR18765  Tiquilia canescens John C. Roos 1948-5-15 3859 Riverside Sonoran (Colorado) Desert, S foot of the Eagle Mtns, mouth of Lost Palms Wash Comment
  UCR18771  Heterotheca sessiliflora subsp. fastigiata John C. Roos 1965-9-26 s.n. Riverside San Jacinto Mtns., Thomas (Garner) Valley Comment
  UCR18778  Salvia vaseyi John C. Roos 1948-5-8 3825 Riverside San Bernardino Mtns, Whitewater 579 Comment
  UCR18783  Cheilanthes parryi John C. Roos 1946-11-30 3168 Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns., north base 457 Comment
Read comments
May 21 2011
  UCR18785  Adiantum capillus-veneris John C. Roos 1948-5-15 3850 Riverside Sonoran (Colorado) Desert, Eagle Mountains, upper Lost Palms Canyon 1037 Comment
  UCR18794  Berberis nevinii John C. Roos 1949-5-21 4321 Riverside Peninsular Range, SW corner of county, 2 miles north of Dripping Springs, near Vail Dam 442 Comment
  UCR18799  Tiquilia palmeri John C. Roos 1965-10-17 s.n. Riverside Sonoran (Colorado) Desert, 10 mi. west of Blythe Comment
  UCR18803  Thysanocarpus laciniatus John C. Roos 1948-5-8 3818 Riverside San Bernardino Mtns, Whitewater 579 Comment
  UCR18806  Salvia greatae John C. Roos 1963-11-2 s.n. Riverside Sonoran (Colorado) Desert, Salt Creek wash c. 3 mi NE of Dos Palmas Spring Comment
  UCR18808  Salvia apiana John C. Roos 1965-6-13 s.n. Riverside Santa Rosa Mtns., Dos Palmas Spring Comment
  UCR18810  Trichoptilium incisum John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns, rocky canyon 2.5 miles SE of Desert Center 610 Comment
  UCR18812  Mentha spicata John C. Roos 1952-8-6 5881 Riverside San Bernardino Valley, Riverside, W end of Fairmont Park 259 Comment
  UCR18826  Croton setiger John C. Roos 1965-7-27 s.n. Riverside Elsinore Comment
  UCR18828  Ditaxis lanceolata John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Cactus City, just east of the Mecca Hills on Interstate Hwy 10 [and 25 mi. east of Indio]. 500 Comment
  UCR18829  Stillingia spinulosa John C. Roos 1965-8-14 s.n. Riverside Sonoran (Colorado) Desert, Dillon Road in Desert Hot Springs. Comment
  UCR18833  Cercocarpus betuloides John C. Roos 1948-5-15 3854 Riverside Sonoran (Colorado) Desert, Eagle Mountains, upper Lost Palms Canyon 1037 Comment
  UCR18844  Gnaphalium canescens subsp. beneolens John C. Roos 1947-9-6 3745 Riverside San Jacinto Mtns., Black Mtn. Comment
  UCR18845  Nolina parryi John C. Roos 1965-7-8 s.n. Riverside San Jacinto Mtns., Thomas Valley at the Pathfinder Camp. Comment
  UCR18846  Petunia parviflora John C. Roos 1951-10-19 5327 Riverside San Jacinto Valley, Near S end of Old Jackrabbit Trail 457 Comment
  UCR18860  Pulicaria paludosa John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Palm Springs 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
  UCR18879  Arenaria douglasii John C. Roos 1952-5-26 5726 Riverside Reche Canyon 427 Comment
  UCR18880  Callitriche marginata John C. Roos 1952-4-16 5540 Riverside Edgemont, near Box Springs 488 Comment
  UCR18881  Juglans californica John C. Roos 1952-6-25 5789 Riverside Thickets at W end of Fairmont Park, Riverside 260 Comment
  UCR18899  Atriplex serenana John C. Roos 1965-8-3 s.n. Riverside Gilman Hot Springs Comment
  UCR18902  Atriplex lentiformis John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Blythe 76 Comment
  UCR18905  Ziziphus obtusifolia John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns, Lost Palms Wash Comment
  UCR18910  Colubrina californica John C. Roos 1967-11-11 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mts.; canyon bottom 3 mi. SE of Desert Center Comment
  UCR18912  Colubrina californica John C. Roos 1960-4-8 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mts.; canyon 2.5 mi. SE of Desert Center Comment
  UCR18913  Delphinium cardinale John C. Roos 1965-6-19 s.n. Riverside Peninsular Range; Santa Ana Mtns, Sky Line Drive, south of Corona Comment
  UCR18915  Ranunculus hebecarpus John C. Roos 1950-5-6 4790 Riverside Santa Ana Mtns., Hagador Canyon 610 Comment
  UCR18917  Ceanothus papillosus subsp. roweanus John C. Roos 1960-5-30 s.n. Riverside Peninsular Range/Santa Ana Mtns., ridge east of Sugarloaf [=Pleasants Peak] 1067 Comment
  UCR18922  Prunus fasciculata John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns, Lost Palm Canyon Comment
  UCR18938  Astragalus insularis var. harwoodii John C. Roos, Lucille Roos 1949-4-10 4228 Riverside Sonoran (Colorado) Desert, Chuckwalla Mts, rocky hillside 3.5 mi. SE of Desert Center Comment
  UCR18939  Psoralea californica John C. Roos 1941-5-10 125 Riverside Santa Rosa Mtns, Pinyon Flats Campground 1220 Comment
  UCR18941  Crotalaria retusa John C. Roos 1936-12-2 1534 Riverside edge of a grain field at the Citrus Experiment Sta. (now UCR) Comment
  UCR18946  Helianthemum scoparium var. vulgare John C. Roos 1950-4-29 4774 Riverside Hills 1 mi NE of summit of Reche Canyon 823 Comment
  UCR18954  Euonymus occidentalis var. parishii John C. Roos 1941-8-2 88 Riverside San Jacinto Mtns, Dark Canyon Comment
  UCR18962  Loeflingia squarrosa John C. Roos 1952-5-14 5664 Riverside Perris-Aguanga Basin, 2 mi NW of Perris Comment
  UCR18964  Arenaria macradenia var. macradenia John C. Roos 1965-7-22 s.n. Riverside San Jacinto Mtns, Thomas Valley 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
  UCR18980  Caesalpinia virgata John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Cactus City, just east of the Mecca Hills on Interstate Hwy 10 [and 25 mi. east of Indio]. 500 Comment
  UCR18985  Astragalus didymocarpus var. dispermus John C. Roos 1949-3-19 4113 Riverside Sonoran (Colorado) Desert, Near Indio Comment
  UCR18986  Astragalus aridus John C. Roos 1949-3-19 4116 Riverside Sonoran (Colorado) Desert, sand dunes west of Indio Comment
  UCR18987  Astragalus sabulonum John C. Roos 1949-3-19 4118 Riverside Western Colorado Desert, Sandy flats 2 or 3 miles east of Mecca Comment
  UCR18991  Quercus cornelius-mulleri John C. Roos 1965-9-26 s.n. Riverside Santa Rosa Mtns, Pinyon Flats 1220 Comment
  UCR18994  Astragalus insularis var. harwoodii John C. Roos, Lucille Roos 1949-4-11 4241 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, Corn Spring Comment
  UCR18997  Sesbania herbacea John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Blythe 76 Comment
  UCR18998  Hoffmannseggia glauca John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, 17 miles west of Blythe 122 Comment
  UCR19012  Leersia oryzoides John C. Roos, L. Roos 1951-10-24 5345 Riverside Riverside, shallow stream at outlet of Fairmount Park Lake 238 Comment
Read comments
Feb 23 2014
  UCR19013  Koeleria macrantha John C. Roos 1952-4-29 5598 Riverside Reche Canyon 457 Comment
  UCR19014  Imperata brevifolia John C. Roos 1965-7-22 s.n. Riverside Sonoran (Colorado) Desert, Palm Springs Comment
  UCR19015  Deschampsia danthonioides var. gracilis John C. Roos 1952-4-16 5543 Riverside Edgemont, near Box Springs 488 Comment
  UCR19017  Cenchrus incertus John C. Roos, L. Roos 1952-7-15 5811 Riverside Hemet 488 Comment
  UCR19023  Suaeda moquinii John C. Roos 1965-6-30 s.n. Riverside Perris-Aguanga Basin region, Perris Comment
  UCR19027  Camissonia cardiophylla John C. Roos 1946-12-7 3181 Riverside Western Colorado Desert, Pushawalla Wash Comment
  UCR19030  Epilobium campestre John C. Roos 1952-5-14 5662 Riverside Moreno Valley, Edgemont [now part of city of Moreno Valley], near Box Springs 488 Comment
  UCR19047  Monoptilon bellioides John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 miles southeast of Desert Center 366 Comment
  UCR19054  Mimulus pilosus John C. Roos 1948-6-19 3882 Riverside San Jacinto Mtns., Roadside [vicinity of Dark Canyon] 7 miles north of Idyllwild Comment
  UCR19068  Chorizanthe leptotheca John C. Roos 1952-6-8 5748 Riverside Reche Canyon 549 Comment
  UCR19077  Mimulus bigelovii var. bigelovii John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 miles southeast of Desert Center 366 Comment
  UCR19082  Monardella linoides subsp. linoides John C. Roos 1946-9-14 3009 Riverside Santa Rosa Mountains, Taylor, desert slope on Palms to Pines Highway 1098 Comment
  UCR19083  Berberis dictyota John C. Roos 1952-2-29 5379 Riverside SW of Reche Canyon 610 Comment
  UCR19085  Plantago erecta John C. Roos 1952-4-2 5461 Riverside Box Springs Mtns, Box Springs grade east of Riverside. 427 Comment
  UCR19087  Draba cuneifolia var. integrifolia John C. Roos 1952-3-19 5402 Riverside Peninsular Range, Box Springs Mountains [east edge of Riverside] 457 Comment
  UCR19094  Lepidium dictyotum var. acutidens John C. Roos 1950-3-18 4712 Riverside Perris-Aguanga Basin region, 1 mi SE of Perris 457 Comment
  UCR19095  Plagiobothrys leptocladus John C. Roos 1950-3-18 4713 Riverside Perris-Aguanga Basin region, 1 mi SE of Perris 457 Comment
  UCR19096  Athysanus pusillus John C. Roos 1967-2-25 s.n. Riverside Box Springs Mtns, Sunymead, Pigeon Pass 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
  UCR19108  Boerhavia coccinea John C. Roos 1948-5-15 3858 Riverside Sonoran (Colorado) Desert, S foot of the Eagle Mtns, mouth of Lost Palms Wash Comment
  UCR19110  Boerhavia intermedia John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Desert Center Comment
  UCR19111  Boerhavia wrightii 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
  UCR19122  Petalonyx linearis John C. Roos, Lucille Roos 1949-4-6 4150 Riverside Sonoran (Colorado) Desert, Chocolate Mountains, canyon bottom near Pope, Hot Mineral Springs 61 Comment
  UCR19126  Petalonyx thurberi John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns, Lost Palms Wash Comment
  UCR19142  Solanum physalifolium var. nitidibaccatum John C. Roos, L. Roos 1953-6-29 5925 Riverside San Bernardino Mtns. Foothills, Cherry Valley north of Beaumont 976 Comment
  UCR19145  Linanthus liniflorus subsp. pharnaceoides John C. Roos 1952-5-26 5712 Riverside Haas' Ranch, Reche Canyon 457 Comment
  UCR19148  Gilia angelensis John C. Roos, L. Roos 1954-4-17 6069 Riverside Pass at summit of Reche Canyon 732 Comment
  UCR19151  Eriastrum sapphirinum subsp. dasyanthum John C. Roos 1952-5-26 5723 Riverside Haas' ranch, Reche Canyon 457 Comment
  UCR19156  Epipactis gigantea John C. Roos 1948-5-15 3838 Riverside Sonoran (Colorado) Desert, Eagle Mtns., Lost Palms Canyon Comment
  UCR19159  Eriastrum densifolium subsp. densifolium John C. Roos 1965-6-13 s.n. Riverside Santa Rosa Mtns., Dos Palmas Spring Comment
  UCR19160  Eriastrum densifolium subsp. densifolium John C. Roos 1965-7-22 s.n. Riverside San Jacinto Mtns, near Mountain Center 1372 Comment
  UCR19161  Gilia angelensis John C. Roos 1966-3-22 s.n. Riverside Moreno Valley, Edgemont. Comment
  UCR19166  Linanthus aureus John C. Roos 1942-5-2 1148 Riverside Mojave Desert, Joshua Tree Nat. Monument. Lost Horse Well Comment
  UCR19167  Navarretia atractyloides John C. Roos 1950-5-27 4818 Riverside Peninsular Range, Hills NE of summit of Reche Canyon 762 Comment
  UCR19170  Nama hispida var. spathulata John C. Roos 1949-4-1 4203 Riverside Sonoran (Colorado) Desert, 3 mi. NE of Desert Center. 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
  UCR19179  Baccharis sergiloides John C. Roos 1948-9-14 3003 Riverside Santa Rosa Mtns, Dos Palmas Spring, east of Asbestos Mountain 1070 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
  UCR19192  Eclipta prostrata John C. Roos 1965-7-5 s.n. Riverside Sonoran (Colorado) Desert, Thermal Airport Comment
  UCR19206  Polygala cornuta var. fishiae John C. Roos 1960-5-30 s.n. Riverside Peninsular Range/Santa Ana Mtns., ridge east of Sugarloaf [=Pleasants Peak] 1067 Comment
  UCR19208  Pinus monophylla John C. Roos 1947-4-5 3435 Riverside Santa Rosa Mtns., Pinyon Flats 1311 Comment
  UCR19219  Parietaria hespera var. hespera John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns, rocky canyon 2.5 miles SE of Desert Center 610 Comment
  UCR19230  Parietaria hespera var. californica John C. Roos 1959-3-19 5401 Riverside Peninsular Range, Box Springs Mountains, on NE edge of Riverside 396 Comment
  UCR19233  Helianthus petiolaris John C. Roos 1965-7-29 s.n. Riverside Hemet Comment
  UCR19237  Trianthema portulacastrum John C. Roos 1965-10-17 s.n. Riverside Sonoran (Colorado) Desert, roadside 20 miles west of Blythe 120 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
  UCR19261  Viola pedunculata John C. Roos 1947-3-21 3370 Riverside Plateau in Reche Canyon Comment
  UCR19270  Eriogonum apiculatum John C. Roos 1946-8-27 2925 Riverside Santa Rosa Mountains, Santa Rosa Mtn., roadside 2195 Comment
  UCR19271  Pterostegia drymarioides John C. Roos 1952-3-19 5397 Riverside Peninsular Range, Box Springs Mountains [east edge of Riverside] 457 Comment
  UCR19283  Tridens muticus John C. Roos 1947-1-11 3198 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, north slope of mountains, 3.5 mi SE of Desert Center 366 Comment
  UCR19288  Stipa coronata John C. Roos 1950-5-27 4817 Riverside Peninsular Range, Hills NE of summit of Reche Canyon 762 Comment
  UCR19294  Stipa lepida John C. Roos 1950-5-6 4778 Riverside 2-3 miles SW of Corona Comment
  UCR19303  Schismus barbatus John C. Roos 1952-3-19 5400 Riverside Peninsular Range, Box Springs Mountains [east edge of Riverside] 457 Comment
  UCR19349  Melica imperfecta John C. Roos 1950-4-29 4771 Riverside Reche Canyon north of Sunnymead 610 Comment
  UCR19367  Digitaria ischaemum John C. Roos 1965-9-28 s.n. Riverside San Jacinto Valley, San Jacinto Comment
  UCR19372  Sorghum halepense John C. Roos 1965-10-25 s.n. Riverside Coachella Valley, Coachella, south of Indio -8 Comment
  UCR19373  Muhlenbergia rigens John C. Roos 1965-6-30 s.n. Riverside Santa Ana Mtns., Ortega Hwy Comment
  UCR19374  Muhlenbergia microsperma John C. Roos 1937-5-1 1406 Riverside La Sierra Campus of Loma Linda Univ. Comment
  UCR19375  Muhlenbergia microsperma John C. Roos 1966-4-29 s.n. Riverside Between March AFB and Lakeview 762 Comment
  UCR19500  Xylorhiza cognata John C. Roos, Lucille Roos 1949-4-6 4138 Riverside Sonoran (Colorado) Desert, c. 10 mi. east of Mecca, at the south face of the Orocopia Mtns. Comment
  UCR19506  Haplopappus squarrosus John C. Roos 1965-10-7 s.n. Riverside hills 4 mi south of Beaumont. (Badlands) Comment
  UCR19510  Chaetopappa aurea John C. Roos 1965-7-22 s.n. Riverside San Jacinto Mtns, near Mountain Center 1372 Comment
  UCR19519  Isocoma acradenia var. eremophila John C. Roos 1965-10-12 s.n. Riverside Sonoran (Colorado) Desert, near Indio -6 Comment
  UCR19520  Veronica peregrina subsp. xalapensis John C. Roos 1952-4-2 5454 Riverside Edgemont, near Box Springs 488 Comment
  UCR19539  Lepidospartum squamatum John C. Roos 1965-10-12 s.n. Riverside San Bernardino Mtns./Sonoran (Colorado) Desert, Whitewater Comment
  UCR19658  Triticum aestivum John C. Roos 1965-10-4 s.n. Riverside March AFB, Edgemont 366 Comment
  UCR19659  Leptochloa uninervia John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Blythe 76 Comment
  UCR19661  Paspalum dilatatum John C. Roos 1965-8-3 s.n. Riverside Hemet 503 Comment
  UCR19665  Poa secunda John C. Roos 1950-2-25 4710 Riverside Pass between Reche Canyon and Pigeon Pass Road 457 Comment
  UCR19678  Aristida purpurea var. nealleyi John C. Roos, Lucille Roos 1949-4-11 4242 Riverside Sonoran (Colorado) Desert, Hayfield Dry Lake Comment
  UCR19681  Aristida purpurea var. nealleyi John C. Roos 1938-8-7 582 Riverside San Jacinto Mtns., Road bank near San Jacinto River, east of Hemet 701 Comment
  UCR19684  Aristida adscensionis John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, 20 mi west of Blythe Comment
  UCR19688  Arundo donax John C. Roos 1966-9-26 s.n. Riverside Sonoran (Colorado) Desert, Coachella Valley; Indio 3 Comment
  UCR19689  Avena barbata John C. Roos 1966-3-22 s.n. Riverside San Jacinto Valley, Gilman [Hot] Springs 610 Comment
  UCR19699  Aristida purpurea var. parishii John C. Roos 1965-6-13 s.n. Riverside San Jacinto Mtns., west base of the mountains near San Jacinto River, near Hwy 74 Comment
  UCR19706  Cyclospermum leptophyllum John C. Roos, L. Roos 1953-5-9 5917 Riverside Riverside, Fairmont Park 259 Comment
  UCR19707  Caucalis microcarpa John C. Roos 1952-4-9 5502 Riverside Riverside, W face of Mt. Rubidoux 400 Comment
  UCR19710  Trifolium gracilentum John C. Roos 1952-4-9 5485 Riverside Hill by Fairmont Park, Riverside 259 Comment
  UCR19711  Malacothrix clevelandii John C. Roos, L. Roos 1954-5-15 6119 Riverside summit of Reche Canyon 732 Comment
  UCR19729  Opuntia John C. Roos, L. Roos 1952-10-18 5905 Riverside Little San Bernardino Mtns, Hidden Valley campground 1220 Comment
  UCR20301A  Nemacladus orientalis John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 miles southeast of Desert Center 366 Comment
  UCR20301B  Nemacladus tenuis var. tenuis John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 miles southeast of Desert Center 366 Comment
  UCR20310  Amaranthus blitoides John C. Roos 1965-7-27 s.n. Riverside Hemet Comment
  UCR20318  Baccharis sergiloides John C. Roos 1949-9-17 4660 Riverside San Bernardino Mtns / Sonoran (Colorado) Desert, Palm oasis in a side canyon on the E side of Whitewater Wash 612 Comment
  UCR20326  Gnaphalium palustre John C. Roos 1952-6-8 5742 Riverside canyon 4 mi NW of Moreno 640 Comment
  UCR20382  Sphaeralcea emoryi subsp. nevadensis John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, 18 mi. west of Blythe 122 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
  UCR20390  Camissonia refracta John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 miles southeast of Desert Center 366 Comment
  UCR20403  Astragalus didymocarpus var. didymocarpus John C. Roos 1952-4-9 5484 Riverside Hill by Fairmont Park, Riverside 259 Comment
  UCR20438  Myosurus minimus subsp. apus John C. Roos 1952-4-9 5515 Riverside Rolling flats at Edgemont, near Box Springs 488 Comment
  UCR20454  Aristida adscensionis John C. Roos 1952-4-9 5508 Riverside Riverside, east face of Mt. Rubidoux 366 Comment
  UCR20456  Imperata brevifolia John C. Roos 1949-9-7 4655 Riverside Sonoran (Colorado) Desert, 1 mi west of Whitewater bridge on Hwy 99 along a canal 396 Comment
  UCR20457  Muhlenbergia minutissima John C. Roos, L. Roos 1952-10-19 5903 Riverside Little San Bernardino Mtns, Hidden Valley Campground 1220 Comment
  UCR20466  Festuca microstachys John C. Roos 1952-4-9 5481 Riverside Hill by Fairmont Park, Riverside 259 Comment
  UCR20530  Festuca grayi John C. Roos 1952-4-9 5482 Riverside Hill by Fairmont Park, Riverside 259 Comment
  UCR20531  Bromus trinii John C. Roos, L. Roos 1953-3-21 5909 Riverside Sonoran (Colorado) Desert, Mouth of Andreas Canyon south of Palm Springs 274 Comment
  UCR20584  Bromus arizonicus John C. Roos 1952-4-9 5473 Riverside Riverside, E base of Mt. Rubidoux 274 Comment
  UCR22191  Lotus wrangelianus John C. Roos 1952-4-9 5478 Riverside Hill by Fairmont Park, Riverside 259 Comment
  UCR23251  Ribes californicum var. hesperium John C. Roos 1965-6-19 s.n. Riverside Peninsular Range; Santa Ana Mtns, Sky Line Drive, south of Corona Comment
  UCR23254  Rumex salicifolius var. denticulatus John C. Roos 1952-5-26 5719 Riverside Haas' Ranch, Reche Canyon 457 Comment
  UCR23256  Petunia parviflora John C. Roos 1952-5-28 5728 Riverside Perris-Aguanga Basin region, San Jacinto River bottomland 1 mile southeast of Perris 427 Comment
  UCR23259  Dodecatheon clevelandii John C. Roos 1958-4-3 s.n. Riverside Plateau in Reche Canyon Comment
  UCR23268  Asclepias erosa John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, 18 mi. west of Blythe 122 Comment
  UCR23270  Brickellia desertorum John C. Roos, L. Roos 1950-10-28 5020 Riverside Perris-Aguanga basin region, N base Mt. Russell, 1 mi SE of Moreno 550 Comment
  UCR23271  Brickellia desertorum John C. Roos, L. Roos 1950-10-14 5006 Riverside San Bernardino Valley Region, West Riverside; east end Jurupa Hills, near corner of Alta and Canal Sts. 306 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
  UCR23273  Brickellia desertorum John C. Roos, L. Roos 1950-9-9 4986 Riverside Mt. Rubidoux. 400 Comment
  UCR23276  Baccharis brachyphylla John C. Roos 1950-10-16 5008 Riverside Transverse Range/Little San Bernardino Mtns., Dry Morongo Canyon about 1 mi south of Riverside-San Bernardino County line 612 Comment
  UCR23281  Chrysothamnus nauseosus John C. Roos, L. Roos 1950-10-21 5013 Riverside Mojave Desert, Little San Bernardino Mountains, Wonderland of Rocks [Joshua Tree National Park] 1220 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
  UCR23299  Stipa pulchra John C. Roos 1952-5-7 5621 Riverside Flats at Edgemont 488 Comment
  UCR23302  Lolium perenne subsp. multiflorum John C. Roos 1952-5-14 5661 Riverside San Bernardino Valley, Riverside, corner of Iowa Avenue and 8th Street 305 Comment
  UCR23303  Poa secunda John C. Roos 1952-4-2 5453 Riverside Edgemont, near Box Springs 488 Comment
  UCR23305  Cirsium occidentale var. occidentale John C. Roos 1952-4-13 5523 Riverside Box Springs Mountains 488 Comment
  UCR23306  Encelia californica John C. Roos 1952-4-16 5557 Riverside Box Springs Mountains, Pigeon Pass 457 Comment
  UCR23307  Baccharis sarothroides John C. Roos, L. Roos 1950-10-28 5021 Riverside Box Springs 473 Comment
  UCR23310  Chenopodium californicum John C. Roos 1952-4-16 5560 Riverside Box Springs Mountains, Pigeon Pass 366 Comment
  UCR23314  Stipa speciosa John C. Roos 1952-4-9 5495 Riverside Riverside, W face of Mt. Rubidoux 400 Comment
  UCR23315  Quercus wislizeni var. frutescens John C. Roos 1952-4-13 5518 Riverside Peninsular Range, Box Springs Mountains 520 Comment
  UCR23321  Festuca microstachys John C. Roos 1952-4-2 5464 Riverside Box Springs Mtns, Box Springs grade east of Riverside. 427 Comment
  UCR23346  Polypodium hesperium John C. Roos 1936-9-15 2512 Riverside San Jacinto Mountains, Devil's Slide Trail above Idyllwild. Comment
  UCR23348  Marsilea vestita John C. Roos 1965-6-30 s.n. Riverside Perris-Aguanga Basin region, San Jacinto River bottom, near Perris Comment
  UCR23393  Sanicula tuberosa John C. Roos 1950-4-22 4755 Riverside Summit of Reche Canyon. 765 Comment
  UCR23397  Apiastrum angustifolium John C. Roos 1943-4-28 2629 Riverside hills SE of Riverside Comment
  UCR23408  Asclepias subulata John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Blythe airport 75 Comment
  UCR23410  Rhus integrifolia John C. Roos 1944-1-29 2766 Riverside Box Springs Mtns. east of Riverside near Pigeon Pass 750 Comment
  UCR23421  Amaranthus hybridus John C. Roos 1965-10-13 s.n. Riverside Corona Comment
  UCR23460  Ruta chalepensis John C. Roos 1950-4-22 4749 Riverside In the pass between Reche Canyon and Pigeon Pass Road 457 Comment
  UCR23461  Prunus virginiana John C. Roos 1965-7-3 s.n. Riverside San Jacinto Mtns., Dark Canyon, north fork of the San Jacinto River Comment
  UCR23476  Boerhavia triquetra John C. Roos 1965-9-26 s.n. Riverside Santa Rosa Mtns, Above Palm Desert 701 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
  UCR23481  Boerhavia coccinea John C. Roos 1966-9-20 s.n. Riverside San Jacinto Valley, San Jacinto Comment
  UCR23482  Draba cuneifolia John C. Roos 1958-2-22 s.n. Riverside Chuckwalla Mtns., Canyon 2.5 mi S.E. of Desert Center Comment
  UCR23491  Galium parishii John C. Roos 1936-9-15 2510 Riverside San Jacinto Mtns., Above Idyllwild Comment
  UCR23506  Rubus parviflorus John C. Roos 1942-6-20 991 Riverside San Jacinto Mtns., Dark Canyon, N Fork San Jacinto River Comment
  UCR23513  Alchemilla occidentalis John C. Roos 1950-4-22 4751 Riverside Hills NE of the summit of Reche Canyon 823 Comment
  UCR23520  Epilobium campestre John C. Roos 1952-6-18 5779 Riverside Moreno Valley, Edgemont [now part of city of Moreno Valley] 457 Comment
  UCR23532  Gayophytum diffusum subsp. parviflorum John C. Roos 1937-8-18 2529 Riverside San Jacinto Mtns, Round Valley 2744 Comment
  UCR23534  Epilobium oregonense John C. Roos 1937-8-18 2528 Riverside San Jacinto Mtns, Round Valley 2744 Comment
  UCR23545  Pectocarya penicillata John C. Roos 1966-4-5 s.n. Riverside Hills near Winchester Comment
  UCR23546  Tiquilia canescens John C. Roos 1958-2-22 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Bench, SW end of Chuckwalla Mtns. Comment
  UCR23547  Proboscidea althaeifolia John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, 17 miles west of Blythe 122 Comment
  UCR23558  Sidalcea neomexicana John C. Roos 1966-5-19 s.n. Riverside San Jacinto Valley, 3 mi. west of San Jacinto Comment
  UCR23560  Euphorbia polycarpa John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Cactus City, just east of the Mecca Hills on Interstate Hwy 10 [and 25 mi. east of Indio]. 500 Comment
  UCR23563  Eucrypta micrantha John C. Roos 1966-3-26 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 mi SE of Desert Center 366 Comment
  UCR23566  Salvia greatae John C. Roos 1958-3-29 s.n. Riverside Sonoran (Colorado) Desert, Salt Creek Wash, 3 miles north of Coachella Canal on [south] base of Orocopia Mtns. 305 Comment
  UCR23575  Monardella hypoleuca subsp. intermedia John C. Roos 1962-6-30 s.n. Riverside Santa Ana Mtns, Skyline Drive at the head of Hagador Canyon 1159 Comment
Read comments
Aug 17 2012
  UCR23579  Tiquilia palmeri John C. Roos 1947-3-1 3299 Riverside Sonoran (Colorado) Desert, Coachella Valley, [near Thousand Palms] 8 mi. SE of Garnet 98 Comment
  UCR23580  Tiquilia palmeri John C. Roos 1949-3-19 4111 Riverside Sonoran (Colorado) Desert, Mouth of Shaver's Wash near Mecca Comment
  UCR23594  Bernardia myricifolia John C. Roos 1946-9-14 3024 Riverside Santa Rosa Mtns, Dos Palmas Spring, east of Asbestos Mountain 1070 Comment
  UCR23603  Malvella leprosa John C. Roos 1952-6-18 5776 Riverside Perris-Aguanga Basin region, 1 mi SE of Perris 427 Comment
  UCR23606  Stillingia spinulosa John C. Roos 1949-3-26 4120 Riverside Sonoran (Colorado) Desert, Indio Comment
  UCR23621  Scutellaria tuberosa John C. Roos 1950-4-15 4734 Riverside In the hills NE of the summit of Reche Canyon 546 Comment
  UCR23637  Monardella nana subsp. tenuiflora John C. Roos 1937-8-18 2542 Riverside San Jacinto Mountains, Taquitz Valley 2500 Comment
  UCR23678  Silene parishii John C. Roos 1936-9-15 2515 Riverside San Jacinto Mountains, Devil's Slide Trail above Idyllwild. 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
  UCR23768  Encelia actoni John C. Roos 1942-6-20 992 Riverside San Jacinto Valley, E of Hemet Comment
  UCR23770  Eclipta prostrata John C. Roos 1948-10-23 3524 Riverside Riverside, Evans Lake, Fairmont Park 274 Comment
  UCR23778  Hymenoclea salsola John C. Roos 1947-3-1 3300 Riverside Salton Sea, 2 mi. NW of Travertine Rocks, NW side of Salton Sea. 1006 Comment
  UCR23781  Chrysothamnus teretifolius John C. Roos 1943-10-16 2737 Riverside Southern Mojave Desert, Falcon Flats, Little San Bernardino Mtns 1524 Comment
  UCR23812  Heterotheca subaxillaris John C. Roos 1965-9-26 s.n. Riverside Sonoran (Colorado) Desert, 2 mi south of Jackson St., Indio Comment
  UCR23815  Hemizonia kelloggii John C. Roos 1965-6-27 s.n. Riverside Reche Canyon Comment
  UCR23852  Lotus rigidus John C. Roos 1966-2-12 s.n. Riverside Sonoran (Colorado) Desert, 2.5 mi SE of Desert Center, Chuckwalla Mtns 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
  UCR23855  Chloris gayana John C. Roos 1965-9-16 s.n. Riverside San Jacinto Comment
  UCR23857  Psorothamnus schottii John C. Roos 1966-5-2 s.n. Riverside Western Colorado Desert, mouth of Pushawalla Canyon, Indio Mtns [Hills]. Comment
  UCR23867  Aristida purpurea var. nealleyi John C. Roos 1965-9-26 s.n. Riverside Mojave Desert, Palm Springs, in a parkway 122 Comment
  UCR23874  Bromus hallii John C. Roos 1942-6-20 994 Riverside Peninsular Range; San Jacinto Mtns, Dark Canyon Camp, North Fork San Jacinto River 1829 Comment
  UCR23875  Bromus rubens John C. Roos, L. Roos 1950-4-15 4739 Riverside Peninsular Range, Box Springs Mtns., Pigeon Pass 457 Comment
  UCR23886  Festuca arundinacea John C. Roos 1950-4-15 4743 Riverside W end of Fairmont Park Lake, Riverside 244 Comment
  UCR23899  Lotus nevadensis var. nevadensis John C. Roos 1937-8-18 2541 Riverside San Jacinto Mtns., Near Willow Creek 2439 Comment
  UCR23912  Lotus heermannii John C. Roos 1952-6-13 5768 Riverside [Box Springs Mountains], Pigeon Pass. 427 Comment
  UCR23921  Andropogon glomeratus John C. Roos 1938-12-29 322 Riverside San Jacinto Mtns/Colorado Desert, Palm Canyon Comment
  UCR23925  Aristida californica John C. Roos 1937-8-22 1209 Riverside Sonoran (Colorado) Desert, 7.5 miles NE of Desert Center 163 Comment
Read comments
Mar 26 2011
  UCR23926  Avena barbata John C. Roos, L. Roos 1950-4-15 4738 Riverside Peninsular Range, Box Springs Mtns., Pigeon Pass 457 Comment
  UCR23933  Lupinus excubitus John C. Roos 1943-5-23 2665 Riverside Southern Mojave Desert; Little San Bernardino Mtns., Joshua Tree National Monument 1524 Comment
  UCR23935  Festuca myuros John C. Roos, L. Roos 1950-4-15 4741 Riverside Peninsular Range, Box Springs Mtns., Pigeon Pass 457 Comment
  UCR23945  Lupinus formosus John C. Roos 1943-5-23 2664 Riverside S Mojave Desert, Little San Bernardino Mtns 1524 Comment
  UCR23953  Amorpha californica John C. Roos 1952-6-13 5767 Riverside Pass between Reche Canyon and the north base of Pigeon Pass. 488 Comment
  UCR23966  Bouteloua aristidoides John C. Roos 1949-3-19 4110 Riverside Sonoran (Colorado) Desert, Mouth of Shaver's Wash near Mecca Comment
  UCR23968  Bromus trinii John C. Roos 1942-5-2 1120 Riverside Little San Bernardino Mountains, Live Oak Tank 1280 Comment
  UCR23971  Aristida purpurea var. nealleyi John C. Roos 1937-8-20 1225 Riverside Santa Rosa Mtns., 1 mi east of Pinon Flats Public Camp 1220 Comment
  UCR23978  Amorpha fruticosa var. occidentalis John C. Roos 1966-5-5 s.n. Riverside Gilman Hot Springs, San Jacinto Valley Comment
  UCR23990  Eragrostis mexicana subsp. virescens John C. Roos 1965-7-7 s.n. Riverside San Jacinto Comment
  UCR23991  Eragrostis curvula var. curvula John C. Roos 1965-9-16 s.n. Riverside Lakeview Comment
  UCR23995  Piptatherum miliaceum John C. Roos 1965-6-19 s.n. Riverside Peninsular Range; Santa Ana Mtns, Sky Line Drive, south of Corona Comment
  UCR23998  Phalaris aquatica John C. Roos 1962-6-30 s.n. Riverside Santa Ana Mtns, Head of Tin Mine Canyon Comment
  UCR23999  Layia platyglossa John C. Roos 1965-6-13 s.n. Riverside Peninsular Range; San Jacinto Mtns., Mountain Center 1372 Comment
Read comments
Jan 8 2013
  UCR24000  Eriochloa aristata John C. Roos 1965-9-26 s.n. Riverside Sonoran (Colorado) Desert, Coachella Valley, Indio -3 Comment
  UCR24001  Eriochloa acuminata Alfred R. Roos 1937-11-28 s.n. Riverside East Washington Street, Riverside 457 Comment
  UCR24008  Leptochloa filiformis John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, Blythe 76 Comment
  UCR24009  Glyceria elata John C. Roos 1965-7-3 s.n. Riverside San Jacinto Mtns., Dark Canyon, north fork of the San Jacinto River Comment
  UCR24053  Melica imperfecta John C. Roos 1950-4-22 4754 Riverside Summit of Reche Canyon. 0.5 mi NE of the summit 793 Comment
  UCR24074  Hilaria rigida John C. Roos 1947-3-1 3298 Riverside Sonoran (Colorado) Desert, Coachella Valley, [near Thousand Palms] 8 mi. SE of Garnet 98 Comment
  UCR24104  Carex douglasii John C. Roos 1943-10-16 2739 Riverside Southern Mojave Desert, Falcon Flats, Little San Bernardino Mtns 1524 Comment
  UCR24121  Atriplex coronata var. notatior John C. Roos 1965-6-30 s.n. Riverside Perris-Aguanga Basin region, Perris Comment
  UCR24123  Brandegea bigelovii John C. Roos 1967-11-18 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, 2 mi SE of Desert Center 366 Comment
  UCR24124  Calystegia macrostegia John C. Roos 1950-4-22 4748 Riverside Pigeon Pass. 457 Comment
  UCR24128  Pectis papposa John C. Roos 1965-9-5 s.n. Riverside Sonoran (Colorado) Desert, 18 mi. west of Blythe 122 Comment
  UCR24138  Malacothrix clevelandii John C. Roos 1950-4-22 4756 Riverside 0.3 mi NE of summit of Reche Canyon 762 Comment
  UCR24156  Trichocoronis wrightii John C. Roos 1937-6-7 2505 Riverside San Jacinto River Valley, S base of Jackrabbit Trail, San Jacinto Valley Comment
  UCR24163  Senecio vulgaris John C. Roos 1967-2-7 s.n. Riverside San Jacinto Valley, City of Hemet 518 Comment
  UCR24174  Dudleya saxosa subsp. aloides John C. Roos, Lucille Roos 1949-4-23 4285 Riverside Sonoran (Colorado) Desert, Eagle Mtns., Munsen Canyon Comment
Read comments
Apr 24 2011
  UCR24179  Marah macrocarpa John C. Roos 1966-4-23 s.n. Riverside Peninsular Range; Santa Ana Mtns, south of Corona Comment
  UCR24187  Atriplex parishii John C. Roos 1937-8-17 1214 Riverside 5 mi west of Hemet [Hwy 74 near Homeland] Comment
  UCR24195  Epipactis gigantea John C. Roos 1942-5-2 1129 Riverside Mojave Desert, Joshua Tree National Monument [now Park]. South entrance, Cottonwood Spring 915 Comment
Read comments
Apr 5 2011
  UCR24197  Nolina parryi John C. Roos, Lucille Roos 1949-4-23 4282 Riverside Sonoran (Colorado) Desert, Eagle Mtns., Munsen Canyon Comment
  UCR24236  Langloisia matthewsii John C. Roos 1937-4-23 803 Riverside Sonoran (Colorado) Desert, from Hwy 62 to Morongo Pass near Garnet, Coachella Valley Comment
  UCR24238  Linanthus floribundus John C. Roos 1962-5-19 s.n. Riverside Peninsular Range, Santa Ana Mtns., Strawberry [=Santiago? Sugarloaf?] Peak [on the Orange county line] Comment
  UCR24247  Navarretia hamata John C. Roos 1965-6-30 s.n. Riverside Santa Ana Mtns., Ortega Hwy Comment
  UCR24259  Oxytheca trilobata John C. Roos 1943-5-23 2672 Riverside S Mojave Desert, Little San Bernardino Mtns 1524 Comment
  UCR24265  Eriogonum nudum var. pauciflorum John C. Roos 1943-10-16 2740 Riverside Southern Mojave Desert, Falcon Flats, Little San Bernardino Mtns 1524 Comment
  UCR24269  Cycloloma atriplicifolium John C. Roos 1965-9-26 s.n. Riverside Sonoran (Colorado) Desert, Indio Comment
  UCR24296  Montia chamissoi John C. Roos 1937-8-18 2536 Riverside San Jacinto Mtns, Round Valley 2744 Comment
  UCR24319  Eriogonum apiculatum John C. Roos 1937-8-18 2532 Riverside San Jacinto Mountains, Above Idyllwild Comment
  UCR24320  Eriogonum plumatella John C. Roos 1943-10-17 2742 Riverside Sonoran (Colorado) Desert, Dry Morongo Wash 671 Comment
  UCR24321  Eriogonum maculatum John C. Roos 1958-9-28 s.n. Riverside Santa Rosa Mtns., Pinyon Flats 1220 Comment
  UCR24325  Eriogonum wrightii var. nodosum John C. Roos 1943-10-16 2741 Riverside Southern Mojave Desert, Falcon Flats, Little San Bernardino Mtns 1524 Comment
  UCR24328  Eriogonum wrightii John C. Roos 1967-10-28 s.n. Riverside Sonoran (Colorado) Desert/San Bernardino Mtns., Whitewater 427 Comment
  UCR24336  Gilia filiformis John C. Roos 1958-3-15 s.n. Riverside Sonoran (Colorado) Desert, 3 mi. SE of Desert Center, Chuckwalla Mtns. Comment
  UCR24346  Sporobolus contractus John C. Roos 1946-9-14 3028 Riverside Peninsular Range; Santa Rosa Mtns., along the roadside c. 1 mile east of Pinyon Flats camp 1189 Comment
  UCR24356  Ambrosia artemisiifolia John C. Roos 1965-10-17 s.n. Riverside Sonoran (Colorado) Desert, roadside 20 miles west of Blythe 120 Comment
  UCR24358  Ambrosia ilicifolia John C. Roos 1958-3-15 s.n. Riverside Sonoran (Colorado) Desert, 2.5 mi. SE of Desert Center, Chuckwalla Mts. Comment
  UCR24378  Tridens muticus John C. Roos 1966-11-12 s.n. Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns, Spring Tank 457 Comment
  UCR24422  Aristida purpurea var. nealleyi John C. Roos, L. Roos 1950-10-21 5015 Riverside Mojave Desert, Little San Bernardino Mountains, Wonderland of Rocks [Joshua Tree National Park] 1220 Comment
  UCR24425  Hemizonia fasciculata John C. Roos 1965-6-19 s.n. Riverside Peninsular Range; Santa Ana Mtns, Sky Line Drive, south of Corona Comment
  UCR24427  Aristida purpurea var. parishii John C. Roos 1941-8-2 s.n. Riverside San Jacinto Mtns., east of Hemet, on the road to Idyllwild 762 Comment
  UCR24439  Heuchera hirsutissima John C. Roos 1946-8-27 2784 Riverside Peninsular Range, Santa Rosa Mtns 2287 Comment
  UCR24463  Hesperocnide tenella John C. Roos 1952-4-13 5537 Riverside Riverside, north base of the Box Springs Mtns. 396 Comment
  UCR24482  Collinsia heterophylla John C. Roos 1950-4-15 4733 Riverside In the hills NE of the summit of Reche Canyon 546 Comment
  UCR24503  Spergularia bocconi John C. Roos 1966-3-13 s.n. Riverside Winchester Comment
  UCR24517  Eragrostis mexicana subsp. virescens Alfred R. Roos 1937-8-17 10609 Riverside San Jacinto Comment
  UCR25065  Cyperus erythrorhizos John C. Roos 1951-9-25 5249 Riverside Riverside, Fairmount Park 259 Comment
  UCR25126  Asclepias albicans John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns., Lost Palms Canyon, north of Chiriaco Summit Comment
  UCR25147  Acacia greggii John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns., Lost Palms Canyon, north of Chiriaco Summit Comment
  UCR25150  Krameria grayi John C. Roos 1965-6-23 s.n. Riverside Sonoran (Colorado) Desert, Eagle Mtns., Lost Palms Canyon, north of Chiriaco Summit Comment
  UCR25196  Baccharis brachyphylla John C. Roos 1950-12-2 5028 Riverside Sonoran (Colorado) Desert, Eagle Mountains, Munsen ['Monson'] Canyon 1067 Comment
  UCR25198  Brickellia desertorum John C. Roos 1950-11-25 5026 Riverside N end Perris Blvd, Sunnymead 612 Comment
  UCR25219  Veronica persica John C. Roos 1965-6-21 s.n. Riverside Hemet Comment
  UCR25291  Astragalus insularis var. harwoodii John C. Roos 1958-3-15 s.n. Riverside Sonoran (Colorado) Desert, 3 mi. SE of Desert Center, Chuckwalla Mtns. Comment
  UCR25362  Linanthus pygmaeus John C. Roos 1952-5-7 5619 Riverside Box Springs Mountains north of Canyon Crest Heights. 488 Comment
  UCR25363  Pellaea mucronata John C. Roos 1952-5-7 5616 Riverside Box Springs Mountains north of Canyon Crest Heights 457 Comment
  UCR25364  Stylomecon heterophylla John C. Roos 1952-4-16 5553 Riverside SW side of Reche Canyon. 488 Comment
  UCR25365  Asplenium vespertinum John C. Roos 1952-4-16 5548 Riverside Damp canyon off Reche Canyon. 518 Comment
  UCR25367  Platystemon californicus John C. Roos 1952-4-13 5532 Riverside N side of the Box Springs Mountains 457 Comment
  UCR25368  Collinsia heterophylla John C. Roos 1952-4-13 5530 Riverside Riverside, Box Springs Mountains 488 Comment
  UCR25369  Dryopteris arguta John C. Roos 1952-4-13 5519 Riverside Peninsular Range, Box Springs Mountains 520 Comment
  UCR25370  Antirrhinum nuttallianum subsp. nuttallianum John C. Roos 1952-4-13 5517 Riverside Riverside, Box Springs Mtns above Canyon Crest Heights 457 Comment
  UCR25374  Stipa cernua John C. Roos 1939-5-27 s.n. Riverside Reche Canyon Comment
  UCR25375  Stipa lepida John C. Roos 1939-5-27 s.n. Riverside Reche Canyon Comment
  UCR25377  Langloisia schottii John C. Roos, Lucille Roos 1949-4-6 4149 Riverside Sonoran (Colorado) Desert, c. 10 mi. east of Mecca, at the south face of the Orocopia Mtns. Comment
  UCR25382  Stipa coronata John C. Roos 1947-5-10 3613 Riverside Peninsular Range, Console Springs, north of Sunnymead 671 Comment
  UCR25388  Muhlenbergia californica John C. Roos 1937-8-23 467 Riverside San Jacinto Mtns, north base of Mt. San Jacinto, Snow Creek 762 Comment
  UCR25404  Arabis pulchra John C. Roos 1942-5-2 1146 Riverside Mojave Desert, Joshua Tree National Monument [now Park], Wonderland of Rocks [county uncertain, near San Bernardino Co. line] 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
  UCR25420  Plagiobothrys canescens John C. Roos 1952-4-30 5605 Riverside Peninsular Range, hills between Camp Haan and Riverside 534 Comment
  UCR25421  Plagiobothrys canescens John C. Roos 1952-4-16 5559 Riverside Box Springs Mountains, Pigeon Pass 457 Comment
  UCR25422  Lasthenia coronaria John C. Roos 1952-4-13 5535 Riverside N side of the Box Springs Mountains 457 Comment
  UCR25458  Gastridium ventricosum John C. Roos 1939-5-27 s.n. Riverside Reche Canyon Comment
  UCR25543  Silene gallica John C. Roos 1941-4-19 171 Riverside Peninsular Range, Loma Linda Hills/Box Springs Mtns.; plateau in Reche Canyon 671 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
  UCR25547  Trifolium willdenovii John C. Roos 1941-4-25 159 Riverside Plateau in Reche Canyon Comment
  UCR25548  Phacelia distans John C. Roos 1941-4-19 175 Riverside Peninsular Range, Loma Linda Hills/Box Springs Mtns.; plateau in Reche Canyon 671 Comment
  UCR25549  Linanthus androsaceus John C. Roos 1941-4-19 167 Riverside Peninsular Range, Loma Linda Hills/Box Springs Mtns.; plateau in Reche Canyon 671 Comment
  UCR25550  Lotus scoparius var. brevialatus John C. Roos 1941-4-25 163 Riverside Plateau in Reche Canyon Comment
  UCR25551  Mirabilis californica John C. Roos 1941-4-25 162 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
  UCR25622  Digitaria ischaemum John C. Roos 1951-9-25 5276 Riverside Riverside, Fairmount Park 259 Comment
  UCR25707  Dodecatheon clevelandii John C. Roos 1941-1-18 223 Riverside Plateau in Reche Canyon 610 Comment
  UCR25718  Camissonia strigulosa John C. Roos 1952-4-16 5554 Riverside Reche Canyon. 457 Comment
  UCR25765  Claytonia perfoliata subsp. perfoliata John C. Roos 1952-4-13 5533 Riverside N slope, on north side of Box Springs Mtns 396 Comment
  UCR25766  Baccharis brachyphylla John C. Roos 1949-4-2 4133 Riverside San Bernardino Mtns., Palm oasis in side canyon of Whitewater Canyon 856 Comment
  UCR25770  Brickellia desertorum John C. Roos 1943-8-17 2709 Riverside Plateau in Reche Canyon Comment
  UCR25771  Bebbia juncea John C. Roos 1937-7-12 1508 Riverside Reche Canyon 549 Comment
  UCR25778  Bowlesia incana John C. Roos 1952-4-13 5536 Riverside N side of the Box Springs Mountains 457 Comment
  UCR25779  Filago californica John C. Roos 1952-4-13 5528 Riverside Peninsular Range, Box Springs Mountains 520 Comment
  UCR25780  Layia platyglossa John C. Roos 1952-4-13 5525 Riverside Box Springs Mtns, above Canyon Crest Heights 488 Comment
  UCR25781  Rhus aromatica John C. Roos 1953-4-13 5524 Riverside Riverside, Box Springs Mountains 489 Comment
  UCR25787  Thysanocarpus curvipes John C. Roos 1952-4-16 5544 Riverside Reche Canyon. 457 Comment
  UCR25788  Nemacladus ramosissimus John C. Roos 1937-7-11 1507 Riverside Box Springs Mtns, Reche Canyon Comment
  UCR25791  Wislizenia refracta subsp. palmeri John C. Roos 1937-4-29 792 Riverside Sonoran (Colorado) Desert, Northeast of Desert Center Comment
  UCR25793  Cerastium glomeratum John C. Roos 1952-4-16 5556 Riverside Box Springs Mountains, Pigeon Pass 457 Comment
  UCR25796  Stellaria nitens John C. Roos 1952-4-13 5531 Riverside N slope, on north side of Box Springs Mtns 396 Comment
  UCR25798  Geranium carolinianum John C. Roos 1952-5-7 5620 Riverside Box Springs Mountains above Canyon Crest Heights 503 Comment
  UCR25799  Phacelia crenulata var. ambigua John C. Roos, Lucille Roos 1949-4-6 4140 Riverside Sonoran (Colorado) Desert, Canyon in the Orocopia Mountains, 2.5 mi. NE of Dos Palmas Spring 152 Comment
  UCR25801  Emmenanthe penduliflora John C. Roos 1952-4-13 5534 Riverside N side of the Box Springs Mountains 457 Comment
  UCR25804  Dudleya saxosa John C. Roos 1937-4-18 1284 Riverside San Gorgonio Pass, Near Cabazon Comment
  UCR25809  Eriogonum gracile var. gracile John C. Roos 1937-7-12 1509 Riverside Reche Canyon 549 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
  UCR25852  Grayia spinosa John C. Roos 1949-4-2 4132 Riverside San Bernardino Mtns., Side canyon off Whitewater Canyon Comment
  UCR25853  Ditaxis lanceolata John C. Roos, Lucille Roos 1949-4-6 4147 Riverside Sonoran (Colorado) Desert, Canyon in the Orocopia Mountains, 2.5 mi. NE of Dos Palmas Spring 152 Comment
  UCR25855  Psorothamnus emoryi John C. Roos, Lucille Roos 1949-4-6 4139 Riverside Sonoran (Colorado) Desert, east of Mecca Comment
  UCR25864  Trifolium gracilentum John C. Roos 1952-4-30 5609 Riverside Peninsular Range, hills between Camp Haan and Riverside 534 Comment
  UCR25865  Stillingia linearifolia John C. Roos 1952-4-13 5520 Riverside Box Springs Mtns. [south slope] 488 Comment
  UCR25867  Elatine brachysperma John C. Roos 1952-4-16 5539 Riverside Edgemont, near Box Springs 488 Comment
  UCR25915  Trifolium variegatum John C. Roos 1952-5-26 5714 Riverside Haas Ranch, Reche Canyon 457 Comment
  UCR25931  Spergularia marina John C. Roos 1947-3-15 3349 Riverside Santa Rosa Mountains/Colorado Desert, Deep Canyon 366 Comment
  UCR25932  Spergularia marina John C. Roos, L. Roos 1951-10-24 5337 Riverside Santa Ana River, at Pedley 229 Comment
  UCR25939  Salix laevigata John C. Roos 1947-11-1 3758 Riverside Sonoran (Colorado) Desert, Eagle Mtns, Lost Palms Canyon 976 Comment
  UCR25941  Pectocarya linearis John C. Roos 1952-2-29 5371 Riverside Reche Canyon 457 Comment
  UCR25944  Draba cuneifolia John C. Roos 1947-3-15 3351 Riverside Sonoran (Colorado) Desert, Santa Rosa Mountains, mouth of Deep Canyon at foot of mtns. 366 Comment
  UCR25950  Lepidium virginicum var. robinsonii John C. Roos 1952-2-29 5367 Riverside San Bernardino Valley, [upper] Reche Canyon 549 Comment
  UCR25957  Caesalpinia virgata John C. Roos 1947-3-15 3353 Riverside Sonoran (Colorado) Desert, Santa Rosa Mountains, mouth of Deep Canyon at foot of mtns. 366 Comment
  UCR25958  Lotus salsuginosus var. salsuginosus John C. Roos, L. Roos 1952-5-19 5694 Riverside One year old burn on hills north of Moreno 518 Comment
  UCR25966  Cryptantha micrantha var. lepida John C. Roos 1947-5-24 3648 Riverside San Jacinto Mtns, junction of Dark Canyon Camp Road with the Idyllwild - Banning Road 1773 Comment
  UCR25968  Cryptantha racemosa John C. Roos 1948-5-1 3815 Riverside Western Colorado Desert/ San Bernardino Mtns., Whitewater, N slope on a mountainside 549 Comment
  UCR25970  Plagiobothrys leptocladus John C. Roos 1966-3-24 s.n. Riverside Edgemont Comment
  UCR25971  Plagiobothrys tenellus John C. Roos 1952-4-29 5594 Riverside Box Springs Mtns, Reche Canyon. 457 Comment
  UCR25972  Plagiobothrys leptocladus John C. Roos 1952-4-23 5572 Riverside Perris-Aguanga Basin region, 1 mi SE of Perris 427 Comment
  UCR25973  Plagiobothrys collinus var. californicus John C. Roos 1952-2-29 5368 Riverside Reche Canyon 457 Comment
  UCR25980  Cryptantha intermedia John C. Roos 1948-4-24 3807 Riverside Eastern San Bernardino Mtns./Sonoran (Colorado) Desert, Whitewater Wash 549 Comment
  UCR25986  Amorpha fruticosa var. occidentalis John C. Roos 1947-5-10 3614 Riverside San Bernardino Valley/Perris-Aguanga Basin Region, 3 mi SE of Console Spring, north of Sunnymead 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
  UCR25988B  Nemacladus sigmoideus John C. Roos 1947-3-15 3354 B Riverside Sonoran (Colorado) Desert, Santa Rosa Mountains, mouth of Deep Canyon at foot of mtns. 366 Comment
  UCR25991  Lobelia cardinalis John C. Roos 1937-8-23 2402 Riverside San Jacinto Mtns, north base of Mt. San Jacinto, Snow Creek 762 Comment
  UCR26070  Calycoseris wrightii John C. Roos, Lucille Roos 1949-4-9 4209 Riverside Sonoran (Colorado) Desert, near the Riverside Mtns., 30 miles north of Blythe 137 Comment
  UCR26076  Bahia dissecta John C. Roos 1946-8-27 2923 Riverside Peninsular Range, Santa Rosa Mtns 2287 Comment
  UCR26079  Baccharis brachyphylla John C. Roos 1946-9-14 3008 Riverside Santa Rosa Mtns, Dos Palmas Spring, east of Asbestos Mountain 1070 Comment
  UCR26085  Centaurea repens John C. Roos, L. Roos 1951-10-24 5335 Riverside City of Riverside, between Arlington area and Pedley 229 Comment
  UCR26090  Machaeranthera cognata John C. Roos 1947-2-1 3226 Riverside Western Colorado Desert, Painted Canyon, Mecca Hills. Comment
  UCR26092  Machaeranthera canescens subsp. ziegleri John C. Roos 1946-8-27 2920 Riverside Santa Rosa Mountains, Santa Rosa Mountain 2409 Comment
  UCR26099  Rafinesquia neomexicana John C. Roos 1948-4-24 3802 Riverside Eastern San Bernardino Mtns./Sonoran (Colorado) Desert, Whitewater Wash 549 Comment
  UCR26101  Senecio vulgaris John C. Roos 1952-3-26 5417 Riverside City of Riverside, Fairmount Park 259 Comment
  UCR26103  Phacelia rotundifolia John C. Roos 1947-3-15 3350 Riverside Santa Rosa Mountains/Colorado Desert, Deep Canyon 366 Comment
  UCR26125  Boerhavia triquetra John C. Roos 1946-10-26 3140 Riverside Sonoran (Colorado) Desert, Chuckwalla Mtns Comment
  UCR26131  Eriophyllum ambiguum John C. Roos 1947-3-15 3352 Riverside Santa Rosa Mountains/Colorado Desert, Deep Canyon 366 Comment
  UCR26134  Encelia actoni John C. Roos 1947-3-15 3342 Riverside San Jacinto Valley, Valle Vista, east of Hemet 549 Comment
  UCR26135  Pseudognaphalium biolettii John C. Roos 1952-2-29 5374 Riverside Reche Canyon Comment
  UCR26138  Stylocline gnaphaloides John C. Roos 1952-4-23 5580 Riverside Box Springs Mtns, 1 yr old burn, north side of mtns 457 Comment
  UCR26145  Juncus bufonius John C. Roos 1952-4-30 5602 Riverside Edgemont, near Box Springs 488 Comment
  UCR26147  Mentzelia desertorum John C. Roos, Lucille Roos 1949-4-9 4208 Riverside Sonoran (Colorado) Desert, near the Riverside Mtns., 30 miles north of Blythe 137 Comment
  UCR26162  Stylocline micropoides John C. Roos, Lucille Roos 1949-4-11 4234 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, Corn Spring Comment
  UCR26172  Linaria canadensis John C. Roos 1947-3-15 3346 Riverside San Jacinto Valley, Valle Vista, east of Hemet 549 Comment
  UCR26173  Castilleja minor subsp. spiralis John C. Roos 1948-4-24 3808 Riverside Eastern San Bernardino Mtns./Sonoran (Colorado) Desert, Whitewater Wash 549 Comment
  UCR26177  Castilleja exserta subsp. exserta John C. Roos 1940-5-4 881 Riverside Reche Canyon Comment
  UCR26182  Salix exigua John C. Roos 1947-2-15 3244 Riverside Sonoran (Colorado) Desert, Lost Palms Canyon, south face of Eagle Mtns., west of Hayfield Dry Lake 997 Comment
  UCR26189  Euphorbia setiloba John C. Roos 1947-11-1 3756 Riverside Sonoran (Colorado) Desert, Eagle Mountains, edge of Lost Palms Wash Comment
  UCR26194  Eschscholzia glyptosperma John C. Roos 1947-2-15 3261 Riverside Sonoran (Colorado) Desert, Eagle Mtns Comment
  UCR26196  Phlox austromontana John C. Roos 1946-8-27 2922 Riverside Peninsular Range, Santa Rosa Mtns 2287 Comment
  UCR26204  Salix lasiolepis John C. Roos, L. Roos 1952-3-1 5383 Riverside 2.5 miles north of Moreno by a seep below reservoir 610 Comment
  UCR26214  Rhamnus ilicifolia John C. Roos 1948-5-15 3833 Riverside Sonoran (Colorado) Desert, Eagle Mountains, upper Lost Palms Canyon 1037 Comment
  UCR26223  Calyptridium monandrum John C. Roos 1947-3-15 3329 Riverside San Jacinto Valley, Valle Vista, east of Hemet 549 Comment
  UCR26224  Arctostaphylos glandulosa John C. Roos 1947-3-15 3328 Riverside San Jacinto Mtns, grade above the San Jacinto River 1067 Comment
  UCR26225  Eucrypta micrantha John C. Roos 1947-3-15 3348 Riverside Sonoran (Colorado) Desert, Santa Rosa Mountains, mouth of Deep Canyon at foot of mtns. 366 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
  UCR26230  Boerhavia triquetra John C. Roos 1946-11-29 3178 Riverside Sonoran (Colorado) Desert, S foot of Eagle Mtns [near Lost Palms Canyon?] Comment
  UCR26236  Scutellaria siphocampyloides John C. Roos 1948-6-19 3881 Riverside San Jacinto Mtns., ridge north of Idyllwild 1829 Comment
  UCR26238  Tamarix ramosissima John C. Roos 1948-5-15 3846 Riverside Sonoran (Colorado) Desert, Lost Palms Canyon, Eagle Mtns Comment
  UCR26239  Aristida purpurea var. parishii John C. Roos 1948-5-15 3840 Riverside Sonoran (Colorado) Desert, Eagle Mountains, upper Lost Palms Canyon 1037 Comment
  UCR26240  Salvia pachyphylla John C. Roos 1946-8-27 2914 Riverside Peninsular Range, Santa Rosa Mtns 2287 Comment
  UCR26242  Ammannia robusta John C. Roos 1937-6-7 2401 Riverside San Jacinto River Valley, Foot of Jackrabbit Trail. [N of San Jacinto] Comment
  UCR26247B  Polygonum punctatum John C. Roos 1937-8-23 1784 Riverside San Jacinto Mtns, north base of Mt. San Jacinto, Snow Creek 762 Comment
Read comments
Apr 22 2012
  UCR26250  Fouquieria splendens John C. Roos 1937-4-28 1288 Riverside Sonoran (Colorado) Desert, 35 mi. west of Desert Center [near Cactus City] Comment
  UCR26264  Erodium brachycarpum John C. Roos 1966-3-22 s.n. Riverside Moreno Valley, Edgemont. Comment
  UCR26265  Eriochloa contracta John C. Roos 1963-8-10 s.n. Riverside Sonoran (Colorado) Desert, Colorado River Valley, Blythe 82 Comment
  UCR26267  Erodium texanum John C. Roos 1966-3-20 s.n. Riverside Sonoran (Colorado) Desert, Mouth of Lost Palms Wash, Eagle Mountains Comment
  UCR26282  Gilia capitata subsp. abrotanifolia John C. Roos, L. Roos 1952-4-27 5585 Riverside San Timoteo Canyon, south of Redlands 427 Comment
  UCR26283  Gilia angelensis John C. Roos 1952-4-23 5578 Riverside Box Springs Mtns, 1 yr old burn, north side of mtns 457 Comment
  UCR26284  Hordeum intercedens John C. Roos 1952-4-23 5571 Riverside Perris-Aguanga Basin region, 1 mi SE of Perris 427 Comment
  UCR26287  Leptochloa uninervia John C. Roos, L. Roos 1951-10-24 5332 Riverside City of Riverside, between Arlington area and Pedley 229 Comment
  UCR26293  Epilobium canum John C. Roos 1949-9-17 4661 Riverside Sonoran (Colorado) Desert, W side of Painted Hill. Near a seep in the palm oasis, in a side canyon on the right side of Whitewater Wash. 2.2 miles north of highway 99 610 Comment
  UCR26300  Justicia californica John C. Roos, Lucille Roos 1949-4-11 4233 Riverside Sonoran (Colorado) Desert, Chuckwalla Mountains, Corn Spring Comment
  UCR26306  Nolina bigelovii John C. Roos 1948-5-15 3852 Riverside Sonoran (Colorado) Desert, Eagle Mtns., Lost Palms Canyon Comment
  UCR26309  Zannichellia palustris John C. Roos 1937-5-10 508 Riverside Lake Elsinore Comment
  UCR26314  Marsilea vestita John C. Roos 1937-4-10 2072 Riverside Lake Elsinore 366 Comment
  UCR26317  Melica frutescens John C. Roos 1948-5-1 3810 Riverside San Bernardino Mtns., Whitewater 518 Comment
  UCR26326  Schismus barbatus John C. Roos 1940-3-3 912 Riverside Sonoran (Colorado) Desert, around Palm Springs 183 Comment
  UCR26337  Phalaris lemmonii John C. Roos 1966-3-24 s.n. Riverside Winchester (near Hemet) 457 Comment
  UCR26575  Descurainia pinnata John C. Roos 1947-2-15 3259 Riverside Sonoran (Colorado) Desert, Lost Palms Canyon, south face of Eagle Mtns., west of Hayfield Dry Lake 997 Comment
  UCR27545  Chorizanthe xanti John C. Roos 1948-5-8 3827 Riverside San Bernardino Mtns, Whitewater 579 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
  UCR27655  Chorizanthe staticoides 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
  UCR30448  Datura stramonium John C. Roos 1965-10-6 s.n. Riverside Santa Ana River at Pedley 201 Comment
  UCR30492  Lotus purshianus John C. Roos 1952-5-26 5721 Riverside Haas' Ranch, Reche Canyon 457 Comment
  UCR30506  Plagiobothrys leptocladus John C. Roos 1952-5-7 5623 Riverside Flats at Edgemont 488 Comment
  UCR30527  Adenostoma fasciculatum John C. Roos 1952-5-26 5722 Riverside Haas' Ranch, Reche Canyon 457 Comment
  UCR30529  Convolvulus arvensis John C. Roos 1952-6-4 5736 Riverside City of Riverside, near Citrus Experiment Station. Comment
  UCR30530  Hordeum marinum subsp. gussoneanum John C. Roos 1949-5-21 4318 Riverside Peninsular Range, At Temecula 305 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
  UCR30553  Piperia cooperi John C. Roos 1950-5-6 4791 Riverside Santa Ana Mtns., Hagador Canyon 427 Comment
  UCR30565  Filago californica John C. Roos 1950-5-6 4786 Riverside Peninsular Range; Santa Ana Mtns., Head of Hagador Canyon, south of Corona 1037 Comment
  UCR30582  Monolepis nuttalliana John C. Roos 1966-3-1 s.n. Riverside Perris basin, San Jacinto River bottom at Perris. Comment
  UCR30584  Dalea mollis John C. Roos 1965-10-17 s.n. Riverside Sonoran (Colorado) Desert, roadside 20 miles west of Blythe 120 Comment
  UCR30627  Astragalus palmeri John C. Roos 1947-3-15 3347 Riverside Sonoran (Colorado) Desert, mouth of Deep Canyon Comment
  UCR30819  Quercus agrifolia var. oxyadenia John C. Roos 1937-8-19 358 Riverside San Jacinto Mtns, near Ribbonwood, Palms to Pines Hwy. Comment
  UCR31665  Cuscuta californica var. papillosa John C. Roos 1946-12-7 3184 Riverside Western Colorado Desert, Pushawalla Wash Comment
  UCR31668  Nemacladus glanduliferus John C. Roos 1948-5-15 3851 Riverside Sonoran (Colorado) Desert, Eagle Mountains, upper Lost Palms Canyon 1037 Comment
  UCR31670  Euphorbia polycarpa John C. Roos 1947-11-1 3755 Riverside Sonoran (Colorado) Desert, Eagle Mountains, edge of Lost Palms Wash Comment
  UCR31680  Nemacladus longiflorus var. longiflorus John C. Roos 1947-3-15 3343 Riverside Peninsular Range; San Jacinto Valley/ San Jacinto Mtns. Foothills, 1 mile east of Valle Vista 549 Comment
  UCR31681  Gilia scopulorum John C. Roos, Lucille Roos 1949-4-10 4226 Riverside Sonoran (Colorado) Desert, Chuckwalla Mts, rocky hillside 3.5 mi. SE of Desert Center Comment
  UCSB37348  Rubus parviflorus Roos, John 1965-7-3 Riverside Dark Canyon, San Jacinto Mtns Comment
  UCSB37352  Styrax redivivus Roos, John 1966-4-23 Riverside Santa Ana Mtns. S. of Corona Comment
  UCSB37371  Datura discolor Roos, J. 1965-11-6 Riverside Colorado Desert, 26 miles west of Blythe. Comment
  UCSB37378  Nicotiana obtusifolia Roos, John 1966-2-5 Riverside Pushawalla Wash near 1000 Palms, Indio Hills Comment
  UCSB37379  Aphanes occidentalis Roos, John 1950-4-22 Riverside hills N.E. of the summit of Reche Canyon 822 Comment
  UCSB37773  Layia platyglossa Roos, John 1965-6-13 Riverside Mountain Center, San Jacinto Mtns. Comment
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May 24 2013
  UCSB37774  Achnatherum speciosum Roos, John 1965-6-13 Riverside E of Hemet Comment
  UCSB37786  Deinandra fasciculata Roos, John 1965-6-19 Riverside Sky Line Drive, south of Corona, Santa Ana Mtns. Comment
  UCSB37787  Deinandra kelloggii Roos, John 1965-6-27 Riverside Reche Canyon; Riverside or San Bernardino County 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
  UCSB37798  Helianthus niveus Roos, John 1962-4-3 Riverside Palm Springs Airport 121 Comment
  UCSB37801  Ericameria paniculata Roos, John 1965-11-6 Riverside Whitewater 304 Comment
  UCSB37817  Corethrogyne filaginifolia Roos, John 1965-8-19 Riverside Beaumont Comment
  UCSB37834  Bergia texana Roos, John 1952-5-28 Riverside San Jacinto river bottomland 1 mile southeast of Perris Comment
  UCSB37835  Epilobium campestre Roos, John 1952-5-28 Riverside San Jacinto river bottomlands, 1 mile south-east of Perris 426 Comment
  UCSB37842  Senegalia greggii Roos, John 1965-6-23 Riverside Colorado Desert, Lost Palms Wash north of Chiriaco Summit near the Eagle Mtns. Comment
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Mar 26 2011
  UCSB37889  Krameria bicolor Roos, John 1965-6-23 Riverside Colorado Desert, Lost Palms Canyon in the Eagle Mtns. Comment
  UCSB37917  Peucephyllum schottii Roos, John 1966-2-5 Riverside Pushawalla Wash near 1000 Palms, Indio Hills Comment
  UCSB37919  Senecio vulgaris Roos, John 1967-2-7 Riverside Hemet; in parking lot along a street Comment
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Mar 23 2014
  UCSB37924  Elymus X hansenii J. C. Roos 1952-6-13 5765 Riverside collected in Reche Canyon Reche Canyon 457 Comment
  UCSB40897  Trichostema lanatum Roos, John 1947-5-24 Riverside Grade south of Banning; San Jacinto Mts; along Hiway 243; (Cabazon 7.5 Q.) 1158 Comment
  UCSB40899  Polypogon monspeliensis Roos, John 1939-5-13 Riverside La Sierra Comment
  UCSB41129  Navarretia fossalis Roos, John 1952-5-28 Riverside San Jacinto river bottomland; 1 mile southeast of Perris Comment
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Aug 8 2008
  UCSB41543  Physalis acutifolia Roos, John 1965-9-5 Riverside Blythe Comment
  UCSB41544  Fagonia laevis Roos, John 1966-3-26 Riverside Rocky slopes 2 miles S.E. of Desert Center Comment
  UCSB41547  Baccharis sarothroides Roos, John; Roos, Lucille 1950-10-28 Riverside Near Box Springs 472 Comment
  UCSB42105  Linanthus filiformis Roos, John 1958-3-15 Riverside 3 miles S.E. of Desert Center, Chuckwalla Mtns. Comment
  UCSB42107  Silene laciniata subsp. laciniata Roos, John 1981-07 Riverside Sky Line Drive, south of Corona, Santa Ana Mtns. Comment
  UCSB42110  Ruta graveolens Roos, John 1950-4-22 Riverside Pass between Reche Canyon and Pigeon Pass Road 457 Comment
  UCSB42112  Leptosiphon pygmaeus subsp. continentalis Roos, John 1950-4-22 Riverside In the hills N.E. of the summit of Reche Canyon 822 Comment
  UCSB42113  Eremothera chamaenerioides Roos, John 1966-3-26 Riverside 2.5 miles S.E. of Desert Center, Chuckwalla Mtns. Comment
  UCSB42114  Camissonia strigulosa Roos, John 1965-6-13 Riverside Mountain Center, San Jacinto Mtns Comment
  UCSB42115  Camissoniopsis bistorta Roos, John 1966-4-5 Riverside Winchester Comment
  UCSB42124  Salvia greatae Roos, John 1958-3-29 Riverside slope in Salt Creek Wash; 3 miles N. of Coachella Canal; on E. base of Orocopia Mtns 304 Comment
  UCSB42128  Castilleja affinis subsp. affinis Roos, John 1966-4-5 Riverside Winchester Comment
  UCSB42136  Veronica peregrina subsp. xalapensis Roos, John 1966-3-24 Riverside Near Edgemont Comment
  UCSB42146  Navarretia atractyloides Roos, John 1952-5-26 Riverside Haas ranch; Reche Canyon Comment
  UCSB42148  Eriogonum wrightii Roos, John 1965-9-26 Riverside Palm Springs Station Comment
  UCSB42151  Epilobium campestre Roos, John 1952-6-18 Riverside Edgemont 457 Comment
  UCSB42164  Eschscholzia parishii Roos, John 1966-3-26 Riverside 2 miles S.E. of Desert Center Comment
  UCSB42171  Spergularia bocconi Roos, John 1966-3-13 Riverside On roadside, Winchester Comment
  UCSB42176  Marah macrocarpa Roos, John 1966-4-23 Riverside Santa Ana Mtns., S of Corona Comment
  UCSB42177  Phacelia cicutaria var. hispida Roos, John 1965-6-19 Riverside Sky Line Drive, south of Corona, Santa Ana Mtns. Comment
  UCSB42178  Eucrypta micrantha Roos, John 1966-3-26 Riverside 2 miles SE of Desert Center Comment
  UCSB42179  Eucrypta micrantha Roos, John 1958-2-21 Riverside Corn Springs, Chuckawalla Mtns. Comment
  UCSB42181  Garrya flavescens Roos, John 1966-4-23 Riverside Skyline Drive; Santa Ana Mtns; above Corona Comment
  UCSB42184  Chamaesyce setiloba Roos, John 1958-9-28 Riverside Pinyon Flats, Santa Rosa Mtns. 1219 Comment
  UCSB42188  Centromadia pungens Roos, John 1965-6-21 Riverside San Jacinto Comment
  UCSB42190  Hulsea vestita subsp. callicarpha Roos, John 1965-6-13 Riverside West of Mountain Center, San Jacinto Mtns. Comment
  UCSB42194  Psorothamnus schottii Roos, John 1966-5-2 Riverside At the mouth of Pushawalla Canyon, Indio Mtns. Comment
  UCSB42203  Euonymus occidentalis subsp. parishii Roos, John 1965-7-3 Riverside Dark Canyon, San Jacinto Mtns. Comment
  UCSB42205  Heterotheca subaxillaris Roos, John 1965-9-26 Riverside 2 miles south of Jackson St., Indio Comment
  UCSB42210  Dicoria canescens Roos, John; Roos, Lucille 1957-11-30 Riverside 6 miles N.W. of Thousand Palms, Coachella Valley 152 Comment
  UCSB42213  Astragalus nuttallianus Roos, John 1958-3-15 Riverside 3 miles SE of Desert Center, in the Chuckwalla Mtns. Comment
  UCSB42217  Psorothamnus emoryi Roos, John 1966-5-2 Riverside Palm Springs Comment
  UCSB42221  Acmispon heermannii Roos, John 1952-6-13 Riverside Pigeon Pass 426 Comment
  UCSB42253  Sidalcea neomexicana Roos, John 1966-5-19 Riverside 3 miles west of San Jacinto, San Jacinto Valley Comment
  UCSB42263  Cycloloma atriplicifolium Roos, John 1965-9-26 Riverside Indio Comment
  UCSB42271  Bebbia juncea Roos, John 1965-6-19 Riverside Sky Line Drive, S of Corona, Santa Ana Mountains. Comment
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May 21 2011
  UCSB42280  Baccharis brachyphylla Roos, John 1958-9-27 Riverside Carrizo Creek near Black Hill, Santa Rosa Mtns. 914 Comment
  UCSB42283  Bouteloua barbata Roos, John 1965-9-5 Riverside 10 mi W of Blythe Comment
  UCSB42284  Bouteloua barbata John C. Roos 1965-9-5 Riverside collected 18.0 mi W Blythe - Blythe Comment
  UCSB45526  Dryopteris arguta Roos, John 1952-4-13 Riverside Box Springs Mtns. 518 Comment
  UCSB45527  Astragalus didymocarpus Roos, John 1952-4-30 Riverside Hills between Camp Haan and Riverside 518 Comment
  UCSB45528  Aristida purpurea Roos, John 1951-10-19 Riverside Badlands and Old Jackrabbit trail 609 Comment
  UCSB45529  Leptochloa fusca subsp. uninervia Roos, John; Roos, Lucille 1951-10-24 Riverside Flats between Arlington and Pedley 228 Comment
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Apr 2 2011
  UCSB45531  Callitriche marginata Roos, John 1952-4-16 Riverside Edgemont; near Box springs 487 Comment
  UCSB45547  Astragalus insularis var. harwoodii Roos, John 1958-3-15 Riverside Chuckwalla Mtns., 3 miles SE of Desert Center Comment
  UCSB45553  Trifolium depauperatum var. amplectens Roos, John 1966-3-24 Riverside Flats west of Hemet Comment
  UCSB45564  Bouteloua aristidoides Roos, John 1946-10-26 Riverside Colorado Desert; Chuckwalla Mtns Comment
  UCSB45571  Gastridium phleoides Roos, John 1939-5-27 Riverside Reche Canyon Comment
  UCSB45579  Camissonia strigulosa Roos, John 1952-4-16 Riverside Reche Canyon 457 Comment
  UCSB45580  Brickellia incana Roos, John 1965-6-23 Riverside Colorado Desert; Lost Palms Wash, north of Chiriaco Summit near the Eagle Mtns. Comment
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Mar 26 2011
  UCSB45585  Cyperus erythrorhizos Roos, John 1951-9-25 Riverside Fairmount Park, Riverside 259 Comment
  UCSB45594  Bromus hordeaceus Roos, J. 1939-5-13 Riverside La Sierra Comment
  UCSB45604  Schoenoplectus acutus var. occidentalis Roos, John; Roos, Lucille 1952-6-10 Riverside Fairmount Park, Riverside 259 Comment
  UCSB45608  Hordeum intercedens Roos, John 1952-4-23 Riverside 1 mile southeast of Perris 426 Comment
  UCSB45613  Aristida purpurea John C. Roos 1966-4-26 Riverside collected in hills between March AFB and Lakeview March AFB and Lakeview Comment
  UCSB45946  Ambrosia acanthicarpa Roos, John 1965-9-26 Riverside Hemet Valley, San Jacinto Mtns. Comment
  UCSB45948  Atrichoseris platyphylla Roos, John 1966-3-26 Riverside 2 miles S.E. of Desert Center Comment
  UCSB45957  Gutierrezia californica Roos, John 1965-6-21 Riverside The hills 2 miles south of Beaumont Comment
  UCSB45959  Gutierrezia californica Roos, John 1965-9-26 Riverside Near Palms Springs station Comment
  UCSB45960  Panicum hirticaule Roos, John 1965-9-5 Riverside 18 miles W. of Blythe Comment
  UCSB45964  Acmispon rigidus Roos, John 1966-2-12 Riverside Chuckwalla Mtns., 2 1/2 miles SE of Desert Center Comment
  UCSB46749  Cryptantha muricata Roos, John 1950-4-15 Riverside Summit of Reche Canyon 792 Comment
  UCSB46757  Cordylanthus rigidus subsp. setiger Roos, John 1965-8-18 Riverside Thomas Valley, San Jacinto Mtns. Comment
  UCSB46879  Frankenia palmeri Roos, John 1965-6-30 Riverside Perris Comment
  UCSB46880  Pinus quadrifolia Roos, John 1965-8-18 Riverside Summit of Pines to Palm Hwy., Thomas Valley, San jacinto Mtns. Comment
  UCSB46882  Marsilea vestita Roos, John 1965-9-16 Riverside Lakeview. Comment
  UCSB46886  Suaeda nigra Roos, John 1952-5-14 Riverside Along San Jacinto River; 1 mile east of Perris 426 Comment
  UCSB51360  Sporobolus indicus J. C. Roos 1965-11-4 Riverside collected on a lawn at the Fairmont Park, in Riverside Fairmont Park Comment
  UCSB51364  Glyceria elata Roos, John 1965-7-3 Riverside Dark Canyon, San Jacinto Mtns. Comment
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May 21 2011
  UCSB51380  Sporobolus indicus Roos, John 1965-11-4 Riverside Fairmont Park, Riverside Comment
  UCSB51392  Bromus catharticus Roos, A. 1937-11-13 Riverside San Bernardino Basin region, Riverside 243 Comment
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May 21 2011
  UCSB51393  Bouteloua aristidoides Roos, John 1946-9-14 Riverside Pinyon Flats, Santa Rosa Mtns 1219 Comment
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Apr 3 2011
  UCSB51394  Aristida purpurea Roos, John 1965-6-23 Riverside Lost Palms Canyon, Eagle Mtns Comment
  UCSB51400  Eragrostis mexicana Roos, John 1965-7-7 Riverside San Jacinto Comment
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Mar 10 2013
  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
  UCSB51406  Eragrostis curvula Roos, John 1965-9-16 Riverside Lakeview Comment
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Sep 19 2018
  UCSB51414  Bouteloua aristidoides Roos, John 1965-9-5 Riverside Desert Center Comment
  UCSB57020  Suaeda nigra Roos, John 1952-5-14 Riverside Along San Jacinto River; 1 mile east of Perris 426 Comment
  UCSB59695  Amaranthus retroflexus Roos, John 1965-8-4 Riverside Arlington Comment
  LA102224  Mentzelia albicaulis J. C. Roos; 1949-4-9 4208 Riverside 30 mi N of Blythe. Comment
  POM263173  Chloris virgata J. C. Roos 1957-8-20 356 Riverside Blythe. Comment
  POM301536  Lamium amplexicaule J. C. Roos 1938-3-12 1642 Riverside Orchard, La Sierra. 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
  RSA0006768  Astragalus insularis var. harwoodii J. C. Roos, Lucille Roos 1949-4-11 4241 Riverside Corn Spring, Cuckawalla Mts. Comment
  RSA0008555  Berberis nevinii J. C. Roos, Lucille Roos 1949-5-21 4321 Riverside Near Vail Dam, 2 miles north of Dripping Springs, southwestern Riverside County. Comment
  RSA0010922  Castilleja densiflora subsp. densiflora J. C. Roos 1952-4-16 5558 Riverside Box Springs Mountains, Pigeon Pass. 396 Comment
  RSA0013892  Proboscidea althaeifolia J. C. Roos 1965-9-5 s.n. Riverside 17 mi. W of Blythe Comment
  RSA0018450  Cordylanthus rigidus subsp. setiger J. C. Roos 1965-8-18 s.n. Riverside Thomas Valley, San Jacinto Mtns. Comment
  RSA0020259  Physalis acutifolia J. C. Roos 1951-9-25 5263 Riverside Riverside. 259 Comment
  RSA0021079  Verbena lasiostachys var. lasiostachys J. C. Roos, L. Roos 1952-6-21 5781 Riverside Pass between Reche Canyon and Moreno Valley, 4 mi. NW of Moreno. 686 Comment
  RSA0022091  Ribes montigenum J. C. Roos 1963-9-8 s.n. Riverside Round Valley, San Jacinto Mts. 2774 Comment
  RSA0022922  Eschscholzia parishii J. C. Roos 1966-3-26 s.n. Riverside 2 miles SE of Desert Center. Comment
  RSA0023313  Spergularia bocconi J. C. Roos 1966-3-13 s.n. Riverside Winchester. Comment
  RSA0028762  Plagiobothrys tenellus J. C. Roos 1952-4-29 5594 Riverside Reche Canyon 457 Comment
  RSA0030791  Cordylanthus rigidus subsp. setiger J. C. Roos 1965-8-18 s.n. Riverside Thomas Valley, San Jacinto Mtns. Comment
  RSA0034450  Cryptantha muricata var. jonesii J. C. Roos 1950-4-15 4732 Riverside The summit of Reche Canyon. 793 Comment
  RSA0034830  Antirrhinum coulterianum J. C. Roos 1941-5-17 138 Riverside About 4 miles S.W. of March Field. Comment
  RSA0036249  Tridens muticus J. C. Roos 1966-11-12 s.n. Riverside Spring Tank, Chuckwalla Mtns. Comment
  RSA0037327  Camissonia claviformis John C. Roos 1966-5-20 s.n. Riverside 2 miles S.E. of Desert Center. Comment
  RSA0037330  Astragalus insularis var. harwoodii John C. Roos 1958-3-15 s.n. Riverside Chuckwalla Mtns., 3 miles SE of Desert Center. Comment
  RSA0037331  Astragalus insularis var. harwoodii John C. Roos 1958-3-15 s.n. Riverside Chuckwalla Mtns., 3 miles SE of Desert Center. Comment
  RSA0038328  Leptochloa uninervia J. C. Roos 1965-9-5 s.n. Riverside Blythe. Comment
  RSA0041842  Thysanocarpus curvipes var. curvipes J. C. Roos 1952-4-16 5544 Riverside Reche Canyon. 457 Comment
  RSA0049527  Rumex californicus John Roos 1952-5-26 5719 Riverside Haas' Ranch, Reche Canyon. 457 Comment
  RSA0049531  Muhlenbergia microsperma J. C. Roos 1952-4-9 5507 Riverside East face Mt. Rubidoux. 365 Comment
  RSA0051251  Polypogon monspeliensis John C. Roos 1952-4-23 5576 Riverside West side of Box Springs Mts. above Canyon Crest Heights. 457 Comment
  RSA0057839  Cenchrus ciliaris J. C. Roos 1965-10-17 Riverside Along the roadside, 20 miles west of Blythe. Comment
  RSA0057843  Urtica gracilis var. holosericea John C. Roos 1951-9-25 5286 Riverside West end of Fairmount Park, Riverside. 259 Comment
  RSA0059251  Orobanche parishii John C. Roos 1948-5-15 3848 Riverside Upper Lost Palms Canyon, Eagle Mts., Colorado Desert. Comment
  RSA0075667  Heterotheca subaxillaris J. C. Roos 1965-9-26 s.n. Riverside 2 mi S of Jackson St., Indio. Comment
  RSA0079568  Cryptantha muricata var. jonesii J. C. Roos 1950-4-15 4732 Riverside The summit of Reche Canyon. 793 Comment
  RSA0080080  Melica frutescens A. R. Roos 1937-4-18 s.n. Riverside Snow Creek, N. side of the San Jacinto Mtns. Comment
  RSA0080081  Oryzopsis hymenoides A. R. Roos 1937-4-18 s.n. Riverside Snow Creek. Comment
  RSA0095278  Linanthus filiformis J. C. Roos 1958-3-15 s.n. Riverside 3 miles SE of Desert Center, Chuckwalla Mtns. Comment
  RSA0098431  Spergularia macrotheca var. leucantha J. C. Roos 1937-5-9 639 Riverside La Sierra. Comment
  RSA0098492  Spergularia marina J. C. Roos, L. Roos 1951-10-24 5337 Riverside Santa Ana River at Pedley. Comment
  RSA0102398  Orobanche cooperi subsp. cooperi John Roos, Lucille Roos. 1949-3-26 4125 Riverside 2 or 3 miles east of Mecca. Comment
  RSA0105465  Eriastrum densifolium subsp. austromontanum J. C. Roos 1965-7-22 s.n. Riverside Mountain Center 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
  RSA443396  Phalaris aquatica J. C. Roos 1965-6-19 s.n. Riverside Skyline Drive, S of Corona Comment
  RSA444675  Amaranthus retroflexus J. C. Roos 1965-8-4 s.n. Riverside Arlington Comment
  RSA444802  Schedonorus arundinaceus J. C. Roos 1950-4-15 4743 Riverside West end of Fairmount Park Lake Comment
  RSA450130  Bidens pilosa J. C. Roos 1965-8-18 s.n. Riverside In Corona. Comment
  RSA450190  Solanum elaeagnifolium J. C. Roos 1965-7-29 s.n. Riverside Along RR track in Banning with Franseris tennuifolia and Cucurbia foetidissima. Comment
  RSA450449  Eragrostis cilianensis J. C. Roos 1965-7-7 s.n. Riverside San Jacinto. Comment
  RSA450452  Eragrostis curvula J. C. Roos 1965-9-16 s.n. Riverside Lakeview Comment
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Sep 19 2018
  RSA457391  Poa annua J. C. Roos 1965-10-7 s.n. Riverside Hemet, in the lawn with Cotula australis. 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
  RSA591739  Cycloloma atriplicifolium J. C. Roos 1965-9-26 s.n. Riverside In Indio. Comment
  RSA592424  Atriplex rosea J. C. Roos 1965-8-4 s.n. Riverside Arlington Comment
  RSA658425  Veronica persica J. C. Roos 1965-6-21 s.n. Riverside Hemet. Comment
  RSA659765  Sporobolus indicus J. C. Roos 1965-11-4 s.n. Riverside Fairmont Park, Riverside Comment
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Aug 23 2007
  RSA659767  Eriochloa contracta J. C. Roos 1963-8-10 s.n. Riverside Blythe Comment
  RSA662065  Rumex conglomeratus J. C. Roos 1952-6-10 5759 Riverside Fairmount Park Comment
  RSA662434  Cycloloma atriplicifolium J. C. Roos 1965-9-26 s.n. Riverside In Indio. Comment
  RSA662527  Triticum aestivum J. C. Roos 1966-4-29 s.n. Riverside Winchester. Comment
  RSA69813  Digitaria ischaemum J. C. Roos 1951-9-25 5276 Riverside Fairmount Park 259 Comment
  RSA69815  Paspalum dilatatum J. C. Roos 1951-9-25 5262 Riverside West end Fairmount Park 259 Comment
  RSA69871  Centaurea solstitialis J. C. Roos 1951-9-25 5253 Riverside Fairmount 259 Comment
  RSA78185  Bromus berteroanus J. C. Roos, L. Roos 1953-3-21 5909 Riverside Mouth of Andreas Canyon, south of Palm Spriings. 274 Comment
  RSA85148  Sisymbrium altissimum J. C. Roos 1952-5-7 5613 Riverside Box Springs Mountains, north of Canyon Crest Heights 457 Comment
  RSA85475  Cerastium glomeratum J. C. Roos 1952-4-16 5556 Riverside Pigeon Pass, Box Springs Mountains 457 Comment
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May 21 2011
  RSA89903  Crypsis vaginiflora J. C. Roos 1952-6-4 5735 Riverside San Jacinto River bottomland 1.5 miles SE of Perris. 427 Comment
  RSA89904  Setaria verticillata J. C. Roos 1952-5-14 5660 Riverside Scattered locally along edge of irrigated orchard with Echinochloa, Crusgalli, etc., corner of Iowa and 8th Street east of Riverside. 305 Comment
  RSA92546  Gilia angelensis J. C. Roos, Lucille Roos 1954-4-17 6069 Riverside Pass at summit of Reche Canyon. 732 Comment
  RSA92555  Nassella cernua J. C. Roos 1952-5-7 5621 Riverside Edgemont 488 Comment
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May 21 2011
  RSA92568  Astragalus gambelianus J. C. Roos, L. Roos 1952-5-19 5689 Riverside On hills N of Moreno. 518 Comment
  RSA92569  Lotus salsuginosus var. salsuginosus J. C. Roos, Lucille Roos, A. R. Roos 1952-5-19 5694 Riverside On hills north of Moreno. Comment
  RSA92572  Trifolium variegatum J. C. Roos 1952-5-26 5714 Riverside Hass' Ranch. Reche Canyon. 457 Comment
  RSA92574  Leptosiphon pygmaeus subsp. pygmaeus J. C. Roos 1952-5-7 5619 Riverside Box Springs Mountains, north of Canyon Crest Heights 488 Comment
  RSA92584  Suaeda moquinii J. C. Roos 1952-5-14 5666 Riverside along San Jacino River 1 mile east of Perris 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
  RSA92587  Leptosiphon liniflorus J. C. Roos 1952-5-26 5712 Riverside Hass' Ranch. Reche Canyon. 457 Comment
  RSA92593  Hemizonia kelloggii J. C. Roos 1952-5-26 5713 Riverside Hass' Ranch. Reche Canyon. 457 Comment
  RSA92594  Hemizonia fasciculata J. C. Roos 1952-5-14 5669 Riverside San Jacinto river bottomlands 1 miles southeast of Perris. 426 Comment
  RSA92722  Bromus berteroanus J. C. Roos, L. Roos 1952-5-24 5711 Riverside one-year-old burn on hills north of Moreno 518 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
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May 21 2011
  RSA92725  Mimulus aurantiacus var. puniceus J. C. Roos 1952-5-14 5665 Riverside 2 mi. northwest of Perris. 503 Comment
  RSA92737  Ammannia coccinea J. C. Roos 1952-5-16 5672 Riverside 1 mile SE of Perris, San Jacinto river bottomlands. 427 Comment
  RSA92741  Calochortus splendens J. C. Roos, L. Roos 1952-5-19 5688 Riverside Between Moreno and Redlands in branch of San Timateo Canyon. 488 Comment
  RSA92744  Mentzelia micrantha J. C. Roos 1952-5-19 5695 Riverside On hills N of Moreno. 518 Comment
  RSA92748  Marsilea vestita J. C. Roos 1952-5-21 5704 Riverside San Jacinto River bottomland 1.5 miles southeast of Perris 426 Comment
  RSA92749  Lasthenia gracilis J. C. Roos 1952-5-21 5706 Riverside San Jacinto River bottomland 1.5 miles southeast of Perris 426 Comment
  SEINET13944702 Image available Lomatium lucidum J. C. Roos 1965-1 sn Riverside Skyline Drive, south of Corona, Santa Ana Mountains. Comment
  SEINET13945547 Image available Fagonia laevis J. C. Roos 1965-1 sn Riverside Lost Palm Canyon, Eagle Mts., Colorado Desert Comment
  SEINET13945561 Image available Kallstroemia californica J. C. Roos 1937-1 357 Riverside Blythe Comment
  SEINET13947224 Image available Salazaria mexicana J. C. Roos 1965-1 s.n. Riverside Dos Palmas Springs, Santa Rosa Mountains Comment
  SEINET13953263 Image available Quercus palmeri J. C. Roos 1965-1 Riverside Summit of Pines to Palms Road (Hwy 74) south of Palm Desert, Santa Rosa and San Jacinto Mountains. Comment
  SEINET4174934 Image available Allium haematochiton J. C. Roos 1950-1 4714 Riverside Ca. 3-4 mi. N of Murrieta, Riverside Co., Calif. El. 1500 ft. Comment
  SEINET8465882 Image available Datura discolor J. C. Roos 1965-11-6 Riverside Desert, 26 miles west of Blythe Comment



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