Search Results — 2000 specimen records retrieved (1435 records with coordinates)
(That's the default maximum. Contact Jason Alexander for larger data requests.)

Results for search: Collector=Robbins;   

Mapping Options:

BerkeleyMapper with county and bioregion layers
BerkeleyMapper without layers.
KML export
(Note: only records with coordinates are mappable)

Download Options:
Select all records · Select records with coordinates

Include annotations and voucher information

PLEASE NOTE: Due to changes in newer versions of Excel, directly copying text from the above selected results does not produce a usable table.
    Follow these steps:
      1. The contents of the selected results window must be copied into a text editor like TextEdit for Mac or WordPad for Windows
      2. The selected results must be saved as a new text document.
      3. This new text document can now be copied into Excel or imported as a tab delimited text file.

(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page.
Turn on yellow flags to show possible range discrepancies. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  GH355186  Abies concolor G. T. Robbins 1944-10-15 1833 Unknown At C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  SEINET195491  Abies concolor G. Thomas Robbins 1944-10-15 1833 El Dorado At Civil conservation Camp Camp Snowline 3 miles east of Camino 1036 Comment
  UC747686  Abies concolor G. Thomas Robbins 1944-10-15 1833 El Dorado 3 mi e Camino (at C.C.C. Camp Snowline) 1036 Comment
  NY29503  Abies lowiana G. T. Robbins 1944-10-15 1833 El Dorado At CCC Camp Snowline, 3 miles east of Camino 1036.3 Comment
  UC747688  Abies magnifica var. magnifica G. Thomas Robbins 1943-6-27 1213 El Dorado ridge above Summit Pass (ca. 0.75 mi sw of U.S. Hiway 50) Comment
  JEPS16378  Abronia umbellata G. Thomas Robbins 1956-12-30 3799 Monterey near Marina Monterey Bay; Marina Beach Comment
  UCD109829  Abronia villosa W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC1084469  Acaena pinnatifida var. californica G. Thomas Robbins 1937-6-6 234 Sonoma hills 2 - 3 mi. e. Bodega Bay Comment
  CAS-BOT-BC330655  Acer glabrum var. glabrum G. Thomas Robbins 1945-7-1 2032 El Dorado Slopes above Island Lake, ca 4 mi NE of Wrights Lake, 9 me N of US Hwy 50 2590 Comment
  UC747305  Acer glabrum var. glabrum G. Thomas Robbins 1945-7-1 2032 El Dorado 9 mi n of U.S. Highway 50 ca 4 mi ne Wrights Lake (above Island Lake); , ne of Wrights Lake 2590 Comment
  UC747165  Achillea millefolium G. Thomas Robbins 1943-6-16 1179 El Dorado 3 mi e Placerville; Institute of Forest Genetics Arboretum Comment
  SEINET5585530 Image available Achnatherum lemmonii G. Thomas Robbins 1945-1 1989 El Dorado Above Camp Creek near Baltic Peak 1067 Comment
  SEINET5585532 Image available Achnatherum lemmonii G. Thomas Robbins 1943-1 1156 El Dorado Above North Fork Webber Creek, about 3 mi. e. of Camino 975 Comment
  UC1084392  Achyrachaena mollis G. Thomas Robbins 1937-4-25 145 Contra Costa 2 mi e Alamo Comment
  CAS-BOT-BC30417  Achyrachaena mollis G. Thomas Robbins 1945-5-27 1956 El Dorado About 1 mile north of Pleasant Valley 762 Comment
  SEINET2429226  Achyrachaena mollis G. Thomas Robbins 1945-5-27 1965 El Dorado Grassy meadow with scattered oaks. About one mile north of Pleasant Valley. 760 Comment
  UCD97897  Achyronychia cooperi W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SBBG67316  Acmispon argophyllus var. argophyllus J. R. and R. C. Robbins 1932-6-8 Tulare Sequoia Nat Park 914 Comment
  UCD104326  Acmispon parviflorus W. W. Robbins 1928-4-29 966 Unknown County Unknown: American River. Comment
  UCD104524  Acmispon wrangelianus Robbins; Raynor 1943-6-1 s.n. Modoc Corporation Ranch, Likely. Comment
  UC747164  Adenocaulon bicolor G. Thomas Robbins 1943-7-10 1263 El Dorado 3 mi e, along bank of North Fork Webber Creek Camino; Webber Creek 914 Comment
  UC747207  Adenocaulon bicolor G. Thomas Robbins 1945-7-16 2068 El Dorado 3 mi e, along bank of North Fork Webber Creek Camino; Webber Creek 914 Comment
  CAS-BOT-BC29276  Adenocaulon bicolor G. Thomas Robbins 1943-7-10 1263 El Dorado North Fork of Webber Creek, about 3 miles E of Camino 914 Comment
  SEINET195485  Adenocaulon bicolor G. Thomas Robbins 1945-7-16 2068 El Dorado North Fork Webber Creek, about 3 miles E of Camino 910 Comment
  SBBG70868  Adenostoma sparsifolium R. C. and J. R. Robbins 1923-2-15 Riverside Pinyon Flat, Palms-Pines Rd Comment
  UCSB8229  Adiantum aleuticum Robbins, G. 1936-8-1 Humboldt Cliff above Van Duzen River, near Carlotta Comment
  UC907658  Aegilops triuncialis G. Thomas Robbins 1945-5-20 1943 El Dorado 4 1/2 mi w of Rescue (Deer Valley Road near its junction with the Rescue Road); Deer Valley Road 304 Comment
  SBBG71571  Agastache urticifolia J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd 2133 Comment
  UC747565  Agastache urticifolia G. Thomas Robbins 1944-7-30 1818 El Dorado 9 mi n of U.S. Highway 50 about 4 mi ne Wrights Lake (along Willow Flat Trail near Maud Lake); near Maud Lake, ne of Wrights Lake 2438 Comment
  RSA32395  Agastache urticifolia G. Thomas Robbins 1944-7-30 1818 El Dorado Near Maude Lake, along Willow Flat Trail, about 4 mi. NE of Wrights Lake (9 mi. N. of US Highway 50. 2439 Comment
  UC747198  Agnorhiza bolanderi G. Thomas Robbins 1945-4-22 1844 El Dorado 2 to 3 mi northwest of Shingle Springs Comment
  CAS-BOT-BC295694  Agnorhiza reticulata G. Thomas Robbins 1946-9-7 3746 El Dorado Along U. S. Highway 50, about 2 miles west of Shingle Springs 411 Comment
  CAS-BOT-BC295697  Agnorhiza reticulata G. Thomas Robbins 1946-9-7 3746 El Dorado Along U. S. Highway 50, about 2 miles west of Shingle Springs 411 Comment
  CAS-BOT-BC295699  Agnorhiza reticulata G. Thos. Robbins 1945-6-30 2013 El Dorado Unspecified Comment
Read comments
Jun 5 2018
  CAS-BOT-BC295701  Agnorhiza reticulata G. Thomas Robbins 1945-6-30 2013 El Dorado Extending along Green Valley Road for 1/4 mi. immediately w. of Rescue 396 Comment
  JEPS15708  Agnorhiza reticulata G. Thomas Robbins 1946-9-7 3746 El Dorado about 2 mi w Shingle Springs (along U.S. Highway 50) 411 Comment
  SEINET6709707 Image available Agnorhiza reticulata G. T. Robbins 1945-6-30 2013 El Dorado Rescue Comment
  UCD128591  Agoseris grandiflora G. Thomas Robbins; S. Galen Smith 1958-6-2 3851 Contra Costa Along Franklin Canyon Road (State Highway 4) in Refugio Valley, just east of Hercules city boundary. 18 Comment
  UC747144  Agoseris grandiflora var. grandiflora G. Thomas Robbins 1943-7-10 1255 El Dorado 3 mi e Placerville; Eddy Arboretum, Institute of Forest Genetics 822 Comment
  CAS-BOT-BC22839  Agoseris heterophylla var. cryptopleura G. Thomas Robbins 1943-4-15 998 El Dorado Above North Fork Webber Creek, 3 mi E of Camino 975 Comment
  UC907761  Agoseris heterophylla var. cryptopleura G. Thomas Robbins 1944-5-15 1600 El Dorado 3 mi e, (near Institute of Forest Genetics) Placerville 762 Comment
  JEPS7979  Agoseris monticola G. Thomas Robbins and Peter H. Raven 1954-7-22 3626 Tulare along John Muir Trail to Mt. Guyot at Guyot Flat Crabtree Meadows; Sequoia National Park 3200 Comment
  JEPS7959  Agoseris retrorsa G. Thomas Robbins 1953-5-8 3526 Calaveras 4.7 mi w, along Mokelumne Hill-Glencoe road Glencoe; Rich Gulch, Mokelumne Hill 457 Comment
  UC747131  Agoseris retrorsa G. Thomas Robbins 1943-4-29 1047 El Dorado 3 mi e, along U.S. Highway 50 at C.C.C. Camp Snowline Camino 1036 Comment
  JEPS25267  Agrostis alba G. Thomas Robbins 1959-8-30 4154 Alameda vacant lot at corner of Excelsior Ct. and MacArthur Blvd (just e of intersection of Lakeshore Ave.); Oakland 7 Comment
  SEINET221009  Agrostis capillaris G. Thomas Robbins 1944-7-6 1754 El Dorado Sly Park meadow 5 mi s. of Pollock Pines. 1006 Comment
  UC907641  Agrostis capillaris G. Thomas Robbins 1944-7-6 1754 El Dorado 5 mi s Pollock Pines; Sly Park meadow Comment
  CAS-BOT-BC139359  Agrostis idahoensis G. Thomas Robbins 1956-9-8 3751 El Dorado Just beyond the northeast edge of Wrights Lake. 2133 Comment
  UC907612  Agrostis scabra G. Thomas Robbins 1945-8-12 2115 El Dorado 2 to 3 mi se Lake Tahoe; Lake Valley 1920 Comment
  UC747490  Alisma plantago-aquatica G. Thomas Robbins with J. T. Howell 1945-5-5 1879 Marin 0.5 mi n Hamilton Field Air Base 0 Comment
  UCD98022  Allionia incarnata var. incarnata W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SEINET195718 Image available Allium amplectens G. T. Robbins 1943-5-7 1075 El Dorado Institute of Forest Genetics 3 mi E of Placerville 0 Comment
  CAS-BOT-BC447492  Allium amplectens G. Thomas Robbins 1943-5-7 1075 El Dorado Institute of Forest Genetics, 3 miles east of Placerville 792 Comment
  UC747512  Allium campanulatum G. Thomas Robbins 1943-6-5 1119 El Dorado 3-4 mi s Kyburz (slope above Silver Fork American River near Sacramento Box Co. sawmill (China Flat)); Silver Fork American River 1371 Comment
  UC747528  Allium campanulatum G. Thomas Robbins 1943-5-27 1093 El Dorado about 3 mi e Camino (woods along bank of North Fork Webber Creek); North Fork Webber Creek 914 Comment
  UC907673  Allium campanulatum G. Thomas Robbins 1944-7-30 1815 El Dorado ridge above Lake Lois; Desolation Valley Wilderness Area 2590 Comment
  RSA123593  Allium falcifolium G. Thomas Robbins 1936-5-1 s.n. Lake East and opposite Mirabel Mine. Comment
  JEPS8048  Allium peninsulare var. peninsulare G. Thomas Robbins 1953-5-7 3514 Calaveras on road to Columbia 2 mi s, on lower slopes of table Mountain Vallecito; Table Mountain 487 Comment
  UC747531  Allium peninsulare var. peninsulare G. Thomas Robbins 1945-5-20 1933 El Dorado ca. 1/2 mi n Simpson Ranch (along bank of Sweetwater Creek); Sweetwater Creek 182 Comment
Read comments
May 11 2010
  SEINET195497  Allium validum G. Thomas Robbins 1944-7-29 1812 El Dorado Desolation Valley Wilderness Area; Camper Flat along the Rubicon River, Rockbound Valley. 2134 Comment
  UC1560914  Allium validum G. T. Robbins 1945-8-5 G.N. 302 El Dorado Onion Flat Desolation Valley Wilderness Area, Rockbound Valley 2042 Comment
  UC747516  Allium validum G. Thomas Robbins 1944-7-29 1812 El Dorado woods at Camper Flat along Rubicon River Desolation Valley Wilderness Area, Rockbound Valley 2133 Comment
  CAS-BOT-BC476731  Allium validum G. T. Robbins 1945-8-5 28 El Dorado Onion Flat, Rockbound Valley, Desolation Valley Wilderness Area 2042 Comment
  RSA32310  Allium validum G. Thomas Robbins 1944-7-29 1812 El Dorado At Camper Flat along Rubicon River, Rockbound Valley, Desolation Valley Wilderness area. 2134 Comment
  UC746858  Alnus incana subsp. tenuifolia G. Thomas Robbins 1944-6-17 1699 El Dorado along small stream about 1 mi e Pyramid Ranger Station 1676 Comment
  UC972348  Alopecurus aequalis G. Thomas Robbins 1951-8-4 3406 Fresno 1 -3 mi. w. Piute Pass (just s. of Humphreys Basin) 3352 Comment
  SEINET7295653 Image available Alopecurus aequalis G. Thomas Robbins 1951-1 3406 Fresno Half-submerged in small pools open meadow country, 1-2 miles west of Piute Pass, just south of Humphreys Basin 3353 Comment
  OBI17106  Ambrosia chamissonis G. Thomas Robbins, John Weiler 1959-5-23 4021 Contra Costa On breakwater (partly natural, partly manmade) portion of Brooks Island 9its NW extension), San Francisco Bay, Richmond Comment
  UCD128783  Ambrosia chamissonis G. Thomas Robbins; John Weiler 1959-5-23 4021 Contra Costa Brooks Island (its north-western extension), San Francisco Bay, Richmond. 7 Comment
  SBBG61678  Ambrosia dumosa J. R. and R. C. Robbins 1930-3-29 Los Angeles Antelope Valley Comment
  SD185444  Ambrosia psilostachya Jolynn Robbins 2004-8-23 35 San Diego Damon Lane County Park in south El Cajon. N of the intersection of Fury Ln and Wieghorst Way. 68 Comment
  UCD81557  Ambrosia psilostachya W. W. Robbins; W. D. Norton 1927-10-1 s.n. Yolo West of Davis. Comment
  UC746949  Amelanchier alnifolia var. pumila G. Thomas Robbins 1943-7-25 1288 a El Dorado slopes above Medley Lakes (reservoir); Desolation Valley Wilderness Area 2590 Comment
  CAS-BOT-BC142989  Amelanchier utahensis G. Thomas Robbins 1944-4-23 1549 El Dorado Along shore of Slab Creek near its juncture with South Fork American River, about 5 mi. n. of Camino. 609 Comment
  UC746997  Amelanchier utahensis G. Thomas Robbins 1943-4-24 1025 El Dorado 3 mi e Camino 1036 Comment
  UCD81537  Ammannia robusta W. W. Robbins; W. D. Norton 1927-10-1 823 Yolo West of Davis. Comment
  UC1084432  Amsinckia eastwoodiae G. Thomas Robbins 1940-3-16 285 San Joaquin near Castle Rock (n facing slope Corral Hollow); Corral Hollow 198 Comment
  JEPS8065  Amsinckia eastwoodiae G. Thomas Robbins and Lawrence L. Heckard 1953-5-30 3549 Tulare Above South Fork of Kaweah River, about 10.5 miles southeast of Three Rivers. Comment
  JEPS25116  Amsinckia intermedia G. Thomas Robbins 1959-3-29 3964 Alameda 1 3/4 mi nw Mt. Eden (and about 3/4 mi s of Russell, along shore of San Francisco Bay, 1/4 mi n of w end Depot Road, adjacent toAmerical Salt Co.); San Francisco Bay 1 Comment
  JEPS25114  Amsinckia lycopsoides G. Thomas Robbins 1959-3-29 3966 Alameda 1/2 mi w Mt. Eden (just ne of Mt. Eden Cemetery along Depot Road) 10 Comment
  SD159780  Amsinckia menziesii var. menziesii Jolynn Robbins 2004-4-19 8 San Diego DAMON LANE COUNTY PARK, NEAR FURY. TAKE WIEGHORST, LEFT ON CALLE ALBARA. 68 Comment
  UC747586  Amsinckia menziesii var. menziesii G. Thomas Robbins 1944-5-7 1593 El Dorado about 5 mi s Pollock Pines (along Pleasant Valley Road w of Sly Park Meadow) 1005 Comment
  UC747587  Amsinckia menziesii var. menziesii G. Thomas Robbins 1944-5-12 1598 El Dorado 3 mi e of Placerville (slope w of Institute of Forest Genetics) 762 Comment
  JEPS25263  Amsinckia spectabilis G. Thomas Robbins with John Weiler 1950-8-8 4150 San Luis Obispo 1 1/2 mi se of Oso Flaco Lake 15 Comment
  UC1084383  Amsinckia tessellata var. gloriosa G. Thomas Robbins 1937-4-11 77 San Mateo above Colma (along Skyline Blvd, s of San Francisco) Comment
  UC1084492  Anaphalis margaritacea G. Thomas Robbins 1940-5-15 313 San Francisco Sunset District Comment
  POM313193  Andropogon glomeratus G. Thomas Robbins, S. Galen Smith 1949-11-19 1903 Marin Roadside seep. Liberty Gulch, Mt. Tamalpias. Comment
  UC1100220  Andropogon glomeratus var. pumilus G. T. Robbins and S. Galen Smith 1949-11-19 1903 Marin Liberty Gulch Mt. Tamalpais; , Liberty Gulch Comment
  JEPS7976  Androsace septentrionalis subsp. subumbellata G. Thomas Robbins 1954-7-24 3629 Tulare above unnamed lake in upper reaches Crabtree Creek; Sequoia National Park 3444 Comment
  JEPS7982  Androsace septentrionalis subsp. subumbellata G. Thomas Robbins, Peter H. Raven 1954-7-19 3622 Inyo above small lake on first bench above Consultation Lake (Lone Pine Canyon); Long Pine Canyon, above Consultation Lake 3657 Comment
  JEPS7453  Androstephium breviflorum G. Thomas Robbins and Rimo Bacigalupi 1952-4-19 3430 San Bernardino along US Hwy 91 about 1 mi w Cronese (Cronese Valley); Mohave Desert 396 Comment
  JEPS7990  Anelsonia eurycarpa G. Thomas Robbins 1954-7-30 3644 Tulare along trail to summit of Mount Whitney just above its junction with the John Muir Trail; Sequoia National Park, Mount Whitney 3962 Comment
  UC747416  Anemone occidentalis G. Thomas Robbins 1945-8-3 2074 El Dorado e. face just below summit Tells Peak; Desolation Valley Wilderness Area, Tells Peak 2743 Comment
  CAS-BOT-BC391943  Anemone occidentalis G. Thomas Robbins 1945-8-3 2074 El Dorado On eastern face of Tells Peak just below summit, Desolation Valley Wilderness Area 2743 Comment
  CAS-BOT-BC271416  Anisocarpus scabridus G. Thomas Robbins; L. R. Heckard 1956-7-25 3725 Lake Southern extension of Snow Mt. West and about one-fourth mile south of its summit 2103 Comment
  SEINET6735016 Image available Anisocoma acaulis G. T. Robbins 1950-4-7 3322 Inyo About 5 miles south of Lone Pine 1067 Comment
  UC747209  Antennaria media G. Thomas Robbins 1944-7-28 1793 El Dorado above, near Rockbound pass Lake Doris; Desolation Valley Wilderness 2590 Comment
  CAS-BOT-BC69108  Antennaria media G. Thomas Robbins 1944-7-28 1793 El Dorado Above Lake Doris near Rockbound Pass, Desolation Valley Wilderness Area 2590 Comment
  UC964836  Anulocaulis annulatus G. Thomas Robbins 1950-4-6 3316 Inyo Death Valley Nat'l Monument, Panamint Mts., Mosaic Canyon Comment
  UC747576  Apocynum androsaemifolium G. Thomas Robbins 1943-7-25 1324 El Dorado slope above e. shore of Echo Lake 2286 Comment
  UC747577  Apocynum cannabinum G. Thomas Robbins 1944-6-16 1694 El Dorado roadway at edge of pine platation, Institute of Forest Genetics Institute of Forest Genetics 792 Comment
  SBBG71711  Aquilegia formosa J. R. and R. C. Robbins 1932-7-16 Mariposa Tioga Pass Rd Comment
  UC746946  Aralia californica G. Thomas Robbins 1945-7-16 2066 El Dorado 3 mi. e. Camino (N. Fork Webber Creek); N. Fork Webber Creek 914 Comment
  CAS-BOT-BC128723  Arbutus menziesii G. Thomas Robbins 1943-4-24 1026 El Dorado Above small stream at edge of shady conifer woods, ca. 3 mi. NE of Camino 975 Comment
  SBBG59968  Arbutus menziesii R. C. and J. R. Robbins 1921-1 Santa Barbara N slope Santa Ynez Mtns Comment
  UC747595  Arbutus menziesii G. Thomas Robbins 1943-4-24 1026 El Dorado 3 mi ne of Camino 975 Comment
  UC1084441  Arctostaphylos G. Thomas Robbins 1940-3-22 301 Sonoma Guerneville Rd ca 8.5 mi w Santa Rosa (in small gully along road); Vine Hill region 45 Comment
  UC747667  Arctostaphylos G. Thomas Robbins 1945-2-19 1838 El Dorado 3 mi e Placerville; Fruit Ridge 762 Comment
  UC747682  Arctostaphylos G. Thomas Robbins 1944-2-6 1483 El Dorado near head of Spanish Ravine (e outskirts of Placerville); Placerville Comment
  UC1084443  Arctostaphylos densiflora G. Thomas Robbins 1940-3-22 303 Sonoma ca 8.5 mi w Santa Rosa (apple orchard along Guerneville rd); Vine Hill region 45 Comment
  UC1084434  Arctostaphylos glandulosa subsp. glandulosa G. Thomas Robbins 1940-3-21 292 Sonoma bed of creek e Chalk Hill road (5-6 mi e of Windsor); Barnes Creek 38 Comment
  UC747677  Arctostaphylos glandulosa subsp. glandulosa G. Thomas Robbins 1944-4-13 1499 Marin about 4 mi w Hamilton Field Air Base; Big Rock Ridge 396 Comment
  GH350363  Arctostaphylos glandulosa var. cushingiana G. T. Robbins 1944-4-13 1499 Unknown Big Rock Ridge, 4 miles west of Hamilton Field Air Base 396 Comment
  SBBG60020  Arctostaphylos glauca R. C. and J. R. Robbins 1933-2-15 Riverside Pinyon Flat, Palms to Pines (St Hwy 74) Comment
  A350649  Arctostaphylos mewukka G. T. Robbins 1944-3-31 Unknown North Fk. Webber Creek, ca. 3 mi. e. of Camino 975 Comment
  UC747666  Arctostaphylos mewukka G. Thomas Robbins 1944-3-31 1492 El Dorado 3 mi e Camino (canyon slope above creek); North Fork Webber Creek 975 Comment
  GH350773  Arctostaphylos nevadensis G. T. Robbins 1945-7-1 2028 Unknown above shore of Grouse Lake, 2-2 1/2 miles east of Wrights Lake, 9 miles north of U. S. Highway 50 2590 Comment
  RSA46944  Arctostaphylos nevadensis G. Thomas Robbins 1943-6-27 1216 El Dorado Rocky ridge above Echo Summit Pass. 2439 Comment
  UC747662  Arctostaphylos nevadensis G. Thomas Robbins 1945-7-1 2028 El Dorado 2-2 1/2 mi e Wrights Lake (9 mi n of US Hwy 50, above shore of Grouse Lake); Grouse Lake 2590 Comment
  UC747685  Arctostaphylos nevadensis G. Thomas Robbins 1943-6-27 1216 El Dorado ridge above Echo Summit Pass 2438 Comment
  A350795  Arctostaphylos nissenana G. T. Robbins 1944-2-6 1482 Unknown Near head of Spanish Ravine at eastern outskirts of Placerville Comment
  CAS-BOT-BC39912  Arctostaphylos nissenana G. Thomas Robbins 1944-2-6 1483 El Dorado Near head of Spanish Ravine at eastern outskirts of Placerville. Comment
  CAS-BOT-BC39913  Arctostaphylos nissenana G. Thomas Robbins 1944-2-6 1483 El Dorado Near head of Spanish Ravine at eastern outskirts of Placerville. Comment
  GH350798  Arctostaphylos nissenana G. T. Robbins 1943-3-28 971 Unknown on slope near head of Spanish Ravine, at eastern outskirts of Placerville 609 Comment
  JEPS15038  Arctostaphylos nissenana G. Thomas Robbins 1943-3-28 971 El Dorado slopes near head of Spanish Ravine; Placerville 609 Comment
  UC747683  Arctostaphylos nissenana G. Thomas Robbins 1943-3-28 971 El Dorado on slope near head of Spanish Ravine (e outskirts of Placerville); Placerville 609 Comment
  RSA32124  Arctostaphylos nissenana G. Thomas Robbins 1943-3-28 971 El Dorado on slope near head of Spanish Ravine, at eastern outskirts of Placerville 609 Comment
  CAS-BOT-BC46697  Arctostaphylos patula G. Thomas Robbins 1943-6-7 1137 El Dorado Above Silver Fork American River near Sacramento Box Sawmill (China Flat), ca. 4 mi. s. of Kyburz. 1371 Comment
  UC1084352  Arctostaphylos stanfordiana G. Thomas Robbins 1937-3-25 8 Sonoma 8-10 mi e Santa Rosa (n-facing slope of canyon); Santa Rosa Creek Canyon Comment
  CAS-BOT-BC47408  Arctostaphylos viscida subsp. viscida G. Thomas Robbins 1944-9-24 1830 El Dorado above North Fork Webber Creek, about 3 miles east of Camino 1066 Comment
  JEPS25152  Argyranthemum foeniculaceum G. Thomas Robbins with John Weiler 1959-5-23 4022 Contra Costa nw extension Brooks Island (on breakwater (partly natural, partly man-made)); San Francisco Bay, Richmond Comment
  OBI16786  Argyranthemum foeniculaceum G. Thomas Robbins, John Weiler 1959-5-23 4022 Contra Costa Brooks Island (its NW extension), San Francisco Bay, Richmond Comment
  SBBG58495  Armeria maritima subsp. californica R. C. Robbins 1931-4-16 San Luis Obispo between Cambria and San Simeon Comment
  CAS-BOT-BC82703  Arnica longifolia G. Thomas Robbins 1943-9-5 1374 El Dorado Summit of Mt. Tallac 2956 Comment
  JEPS15569  Arnica longifolia G. Thomas Robbins with L. R. Heckard 1956-7-25 3712 Colusa Snow Mt. East (s flank) Dark Hollow Creek, Snow Mt. East 1981 Comment
  CAS-BOT-BC82781  Arnica mollis G. Thomas Robbins 1956-9-10 3763 Amador slope above State Highway 88, close to turn-off for and about one-half mile south of Kirkwood Lake 2346 Comment
  CAS-BOT-BC82793  Arnica mollis G. Thomas Robbins 1944-7-29 1799 El Dorado on ridge south and above Lake Schmidell, Desolation Valley Wilderness Area 2590 Comment
  JEPS15694  Arnica mollis G. Thomas Robbins 1956-9-10 3763 Amador 1/2 mi s Kirkwood Lake 2346 Comment
  UC747169  Arnica mollis G. Thomas Robbins 1944-7-29 1799 El Dorado s and above, (in meadow on ridge) Lake Schmidell; Desolation Valley Wilderness Area 2590 Comment
  JEPS15693  Arnica nevadensis G. Thomas Robbins 1956-9-10 3764 Amador 1/2 mi s Kirkwood Lake 2346 Comment
  UC747172  Arnica nevadensis G. Thomas Robbins 1944-7-29 1806 El Dorado Red Peak, above Lake Schmidell Desolation Valley Wilderness Area, Red Peak 2651 Comment
  CAS-BOT-BC85106  Arnica nevadensis G. Thomas Robbins 1956-9-10 3764 Amador Steep, somewhat rocky slope above State Highway 88, close to turn-off for and about one-half mile south of Kirkwood Lake 2346 Comment
  CAS-BOT-BC85107  Arnica nevadensis G. Thomas Robbins 1956-9-10 3764 Amador Steep, somewhat rocky slope above State Highway 88, close to turn-off for and about one-half mile south of Kirkwood Lake 2346 Comment
  CAS-BOT-BC85109  Arnica nevadensis G. Thomas Robbins 1944-7-29 1806 El Dorado Dry, granitic soil pockets on east-facing slope of Red Peak above Lake Schmidell, Desolation Valley Wilderness Area 2651 Comment
  UC747151  Arnica ovata G. Thomas Robbins 1943-8-15 1341 El Dorado 2 1/2 mi ne of, near Grouse Lake Wrights Lake; Grouse Lake 2438 Comment
  CAS-BOT-BC84832  Artemisia cana subsp. cana G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  CAS-BOT-BC93701  Artemisia norvegica subsp. saxatilis G. Thomas Robbins 1956-9-10 3769 Alpine Along trail to Round Top and Elephants Back, between Woods Lake and Winnemucca Lake, about 2 miles airline south of 2682 Comment
  JEPS15688  Artemisia norvegica subsp. saxatilis G. Thomas Robbins 1956-9-10 3769 Alpine 2 airline miles s of Carson Pass (along trail to Round top and Elephants Back, between Woods Lake and Winnemucca Lake) 2621 Comment
  GH404931  Artemisia tridentata G. T. Robbins 1945-10-7 2155 Unknown Southeast slope of Harvey Mt., 2-3 miles northeast of Burgess Spring, Harvey Valley, Lassen N. F. (T. 33N., R.9E) 1676 Comment
  GH427520  Artemisia tridentata subsp. vaseyana G. T. Robbins 1945-10-7 2155 Unknown Southeast slope of Harvey Mt., 2-3 miles northeast of Burgess Spring, Harvey Valley, Lassen N. F. [National Forest] (T.33N., R.9E) 1676 Comment
  SEINET195654  Artemisia tridentata subsp. vaseyana G. Thomas Robbins 1945-10-7 2155 Lassen Lassen National Forest; Harvey Mountain, 2-3 miles northeast of burgess Spring, Harvey Valley 1676 Comment
  CAS-BOT-BC400616  Asarum hartwegii G. Thomas Robbins 1943-4-24 1028 El Dorado Ca. 3 mi. e. of Camino 1036 Comment
  SEINET195650  Asclepias cordifolia G. Thomas Robbins 1943-6-2 1109 El Dorado At ccc Camp Snowline. 1036 Comment
  UC747579  Asclepias cordifolia G. Thomas Robbins 1943-6-2 1109 El Dorado C.C.C. Camp Snowline 1036 Comment
  UC1084478  Asclepias fascicularis G. Thomas Robbins 1937-6-18 250 Sonoma College Avenue Santa Rosa Comment
  SEINET195648  Asclepias speciosa G. Thomas Robbins 1943-7-18 1278 El Dorado Near Phippen Mill, 5 miles south of Pollock Pines. 1006 Comment
  UC747636  Aspidotis densa G. Thomas Robbins 1943-6-27 1218 El Dorado ridge above Echo summit Pass (ca. 3/4 mi sw of US Hwy 50) 2438 Comment
  UC907726  Aspidotis densa G. Thomas Robbins 1945-6-17 1994 El Dorado above Camp Creek near Baltic Peak 1005 Comment
  UC964818  Aspidotis densa G. Thomas Robbins 1945-6-14 1994 El Dorado near Baltic Peak (above Camp Creek) 1005 Comment
  CAS-BOT-BC177566  Astragalus bolanderi G. Thomas Robbins 1943-8-15 1358 El Dorado Along shore of Wrights Lake 2286 Comment
  UC1057449  Astragalus gambelianus G. Thomas Robbins 1937-4-11 98 San Mateo near Spring Valley Lakes (along road to Woodside); near Spring Valley Lakes, along road to Woodside Comment
  CAS-BOT-BC178479  Astragalus gambelianus G. Thomas Robbins 1944-5-16 1607 El Dorado Grassy sites at Institute of Forest Genetics, 3 mi. e. of Placerville. 822 Comment
  SEINET948338  Astragalus gambelianus G. Thomas Robbins 1943-1 981 El Dorado Just south of Institute of Forest Genetics, 3 mi. E. of Placerville. 792 Comment
  UC746981  Astragalus gambelianus G. Thomas Robbins 1944-5-16 1607 El Dorado 3 mi e Placerville (at Institute of Forest Genetics); Institute of Forest Genetics, e of Placerville 822 Comment
  RSA0006806  Astragalus lentiginosus var. variabilis G. Thomas Robbins, R. C. Bacigalupi 1952-4-19 3441 Kern 10 miles east of Mojave Comment
  JEPS7479  Astragalus nuttallianus var. imperfectus G. Thomas Robbins, Rimo Bacigalupi 1952-4-28 3473 San Bernardino rocky slopes near Mitchell's Caverns (Providence Mountains, Mohave Desert); Mohave Desert, Providence Mountains, nr Mitchell's Caverns 1371 Comment
  RSA0006830  Astragalus nuttallianus var. imperfectus G. Thomas Robbins, R. C. Bacigalupi 1952-4-28 3473 San Bernardino Rocky slopes near Mitchell's Caverns, Providence Mtns. 1372 Comment
  SBBG67428  Astragalus purshii var. tinctus J. R. and R. C. Robbins 1930-3-25 San Bernardino NE Mojave Desert Comment
  JEPS15533  Astragalus pycnostachyus G. Thomas Robbins 1956-8-18 3737 San Mateo on slope above Pomponio Creek at its mouth at the Pacific Ocean; on slope above Pomponio Creek Comment
  JEPS24302  Astragalus tener var. tener G. Thomas Robbins 1959-4-11 3977 Alameda about 3/4 mi nw Mt. Eden (about 3/4 mi s of Russell, evaporating ponds along shore San Francisco Bay, adjacent to (just e) American Salt Co, ca 1/4 mi n w end Depot Rd); shore San Francisco Bay, nw of Mt. Eden, s of Russell 1 Comment
  CAS-BOT-BC194010  Astragalus trichopodus var. lonchus L. F. Robbins 1927-7-1 s.n. Santa Barbara Near the coast in Santa Barbara county. Comment
  CAS-BOT-BC69529  Athyrium alpestre subsp. americanum G. Thomas Robbins 1945-8-3 2075 El Dorado On eastern face of Tells Peak just below summit, Desolation Valley Wilderness Area. 2743 Comment
  UC964847  Athyrium distentifolium var. americanum G. Thomas Robbins 1944-7-29 1798 El Dorado ridge s and above Lake Schmidell; Desolation Valley Wilderness Area 2590 Comment
  UC964856  Athyrium distentifolium var. americanum G. Thomas Robbins 1945-8-3 2075 El Dorado just below summit Tells Peak (e face); Desolation Valley Wilderness Area 2743 Comment
  JEPS20852  Athyrium filix-femina var. cyclosorum G. Thomas Robbins 1956-9-14 3783 El Dorado ca. 1/2 mi nw of Echo Summit (along U.S. Hwy 50) 2225 Comment
  UC747644  Athyrium filix-femina var. cyclosorum G. Thomas Robbins 1944-6-7 1657 El Dorado 3 mi e Camino (canyon slope above N Fork Webber Creek) 975 Comment
  UC747386  Athysanus pusillus G. Thomas Robbins 1943-4-10 988 El Dorado 3 mi e of Camino (above North Fork Webber Creek) 975 Comment
  UCD114245  Athysanus pusillus W. W. Robbins 1928-4-29 941 Sacramento American River. Comment
  JEPS25279  Atriplex leucophylla G. Thomas Robbins 1959-9-27 4166 Alameda at edge San Francisco Bay about one-half mi e San Francisco-Oakland Bay Bridge Toll Plaza (Oakland); edge San Francisco Bay, Oakland Comment
  JEPS24999  Atriplex semibaccata G. Thomas Robbins 1958-8-9 3923 Alameda waste places around public dump at the w end Willow Road about one-half mi ne Plummer Landing (sw of Newark); , ne of Plummer Landing Comment
  UCD81539  Baccharis douglasii W. W. Robbins; W. D. Norton 1928-8-1 1425 Yolo near Clarksburg. Comment
  CAS-BOT-BC98021  Baccharis pilularis G. Thomas Robbins 1943-11-2 1406 El Dorado on slope above Smith Flat, 3 mi. e. of Placerville 731 Comment
  SBBG63135  Baccharis pilularis subsp. consanguinea R. C. and J. R. Robbins 1920-10-19 Santa Barbara Hot Springs Rd, Montecito Comment
  SD185462  Baccharis salicifolia Jolynn Robbins 2006-4-9 37 San Diego Damon Lane County Park in south El Cajon. N of the intersection of Fury Ln and Wieghorst Way. 68 Comment
  UCD129504  Baileya pauciradiata W. W. Robbins 1939-12-24 s.n. San Diego Southeast San Diego County: Exact location unknown. Comment
  SEINET8734374 Image available Balsamorhiza bolanderi G. Thomas Robbins 1945-1 1844 El Dorado northwest of Shingle Springs 457 Comment
  CAS-BOT-BC106533  Balsamorhiza deltoidea G. Thomas Robbins 1944-5-5 1582 El Dorado Wooded slope e. and above Smith Flat, 2 1/2 mi. e. of Placerville. 670 Comment
  UC747150  Balsamorhiza sagittata G. Thomas Robbins 1945-7-8 2041 El Dorado near Al Tahoe; Lake Tahoe 1920 Comment
  UC907735  Barbarea orthoceras G. Thomas Robbins 1944-5-16 1608 El Dorado North Fork Webber Creek, ca. 3 mi E. of Camino 914 Comment
  CAS-BOT-BC16782  Barbarea verna G. Thomas Robbins 1944-5-16 1608 El Dorado Along North Fork Webber Creek, ca. 3 miles east of Camino. 914 Comment
  JEPS8226  Bassia hyssopifolia G. Thomas Robbins with D. M. Post, J. W. Dawson, and P. H. Raven 1954-9-3 3648 Stanislaus along Vernalis-Modesto road (Maza Road) 1.8 mi e of bridge crossing San Joaquin River (5.4 mi e of Vernalis) 7 Comment
  JEPS21967  Bellardia trixago G. Thomas Robbins with S. Galen Smith 1958-6-2 3849 Contra Costa just e Hercules city boundary (s and above Refugio Valley, slope along Franklin Canyon Road (State Highway 4)) 18 Comment
  CAS-BOT-BC75654  Berberis nervosa G. Thomas Robbins 1944-5-28 1638 El Dorado Along Long Creek 1-2 miles from its confluence with South Fork American River. 762 Comment
  CAS-BOT-BC75980  Berberis pumila G. Thomas Robbins 1944-4-30 1569 El Dorado Above South Fork Webber Creek, 3-4 miles northeast of Newtown. 914 Comment
  JEPS25018  Bidens frondosa G. Thomas Robbins 1958-10-4 3942 Alameda about equidistant between Eastshore Freeway and Oakland Municipal Airport, along Hegenberger Road, Oakland Oakland Municipal Airport Comment
  UCSB8245  Blechnum spicant Robbins, G. 1936-8-1 Humboldt Near Strong's Station. Comment
  GH414796  Blennosperma nanum G. T. Robbins 1945-4-22 1857 Unknown about 2 1/2 mi. e. of Shingle Springs 457 Comment
  UC907698  Blennosperma nanum var. nanum G. Thomas Robbins 1945-4-22 1857 El Dorado about 2 1/2 mi e of Shingle Springs 457 Comment
  UC747431  Boechera howellii G. Thomas Robbins 1944-7-29 1805 El Dorado above Lake Schmidell; Red Peak, Desolation Valley Wilderness Area 2651 Comment
  CAS-BOT-BC14648  Boechera rectissima G. Thomas Robbins 1944-6-17 1709 El Dorado Above US Highway 50 about 1 mile east of Pyramid Ranger Station. 1676 Comment
  UC747408  Boechera rectissima G. Thomas Robbins 1944-6-17 1709 El Dorado about 1 mi e Pyramid Ranger Station (slope above U.S. Highway 50) 1676 Comment
  RSA32408  Boisduvalia densiflora var. densiflora G. Thomas Robbins 1943-6-21 1206 El Dorado West of Institute of Forest Genetics, 3 miles E of Placerville 732 Comment
  JEPS22013  Bolboschoenus fluviatilis G. Thomas Robbins 1958-6-14 3867 Alameda Along Mt. Eden Roas, about 1.5 miles north of Alvarado. Comment
  CAS-BOT-BC31328  Bolboschoenus maritimus G. Thomas Robbins 1958-6-14 3868 Alameda On banks of slough along Mt. Eden Road, ca 1 1/2 mi N of Alvarado. 3 Comment
  JEPS7975  Botrychium simplex G. Thomas Robbins, Peter H. Raven 1954-7-25 3631 Tulare un-named lake in upper reaches of Crabtree Creek Sequoia National Park 3413 Comment
  UCD56847  Bouteloua barbata W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  OBI9011  Bowlesia incana G. Thomas Robbins 1955-4-16 3652 Alameda Along Marsh Rd about 1 mi S of Alvarado 2 Comment
  UC747356  Boykinia major G. Thomas Robbins 1945-8-5 2097 El Dorado on trail to Pleasant Lake 3-4 mi e Wentworth Springs; trail to Pleasant Lake, e of Wentworth Springs 2072 Comment
  RSA32295  Boykinia occidentalis G. Thomas Robbins 1943-6-17 1187 El Dorado Near head of Long canyon. 2-3 miles E of Pollock Pines. 976 Comment
  JEPS25250  Brickellia californica G. Thomas Robbins with John Weiler 1959-8-6 4130 Monterey about 6 mi s of Pfeiffer-Big Sur State Park and the crossing of the Big Sur River, along State Highway 1 Pfeiffer-Big Sur State Park 182 Comment
  SACT000470  Briza minor L. Robbins 1928-4-20 Sacramento Comment
  CAS-BOT-BC482944  Brodiaea elegans subsp. elegans G. Thomas Robbins 1943-5-28 1099 El Dorado Western edge of Institute of Forest Genetics, 3 miles east of Placerville 731 Comment
  UC747513  Brodiaea elegans subsp. elegans G. Thomas Robbins 1943-5-28 1099 El Dorado 3 mi e Placerville (forest at western edge of Institute); Institute for Forest Genetics 731 Comment
  UC747541  Brodiaea minor G. Thomas Robbins 1944-6-27 1737 El Dorado top of ridge above North Fork Webber Creek (about 3 mi e of Camino) 975 Comment
  CAS-BOT-BC484579  Brodiaea purdyi G. Thomas Robbins 1944-6-27 1737 El Dorado Onn top of ridge above North Fork Webber Creek, ca. 3 mi. e. of Camino 975 Comment
  SEINET799043  Bromus carinatus G. Thomas Robbins 1943-1 1178 El Dorado In Arboretum of Institute of Forest Genetics, 3 miles E. of Placerville 822 Comment
  UCD58300  Bromus carinatus G. Thomas Robbins 1959-4-18 3991 Contra Costa Along Western Drive. Near and north of Pt. Richmond. Western base of Potrero Hills. Richmond. 4 Comment
  UC907628  Bromus diandrus G. Thomas Robbins 1945-5-27 1959 El Dorado about 1/2 mi s of Pleasant Valley (near Clear Creek) 762 Comment
  SACT001007  Bromus rubens L. Robbins 1929-3-27 Imperial Collected on roadside. Comment
  UCD59660  Bromus secalinus Robbins; Raynor 1943-6-1 s.n. Plumas Quincy. Comment
  JEPS15676  Bromus suksdorfii G. Thomas Robbins 1956-9-14 3785 El Dorado about 1/2 mi nw of Echo Summit (along U.S. Hwy 50) 2225 Comment
  UC907644  Bromus tectorum G. Thomas Robbins 1944-6-17 1711 El Dorado about 1 mi e of Pyramid Ranger Station 1676 Comment
  UCD59870  Bromus tectorum Robbins; Raynor 1943-6-1 s.n. Modoc Modoc County Comment
  UCD116907  Bursera microphylla W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  JEPS15677  Calamagrostis canadensis G. Thomas Robbins 1956-9-14 3784 El Dorado 1/2 mi NW of Echo Summit (along US Hwy 50) 2225 Comment
  UC1600434  Calamagrostis canadensis G. Thomas Robbins 1951-7-30 3403 Fresno about 1 mi w of Bear Creek (s and w of Hilgard Branch of Bear Creek) 2926 Comment
  UC1084389  Calandrinia ciliata G. Thomas Robbins 1937-4-11 99 San Mateo grassy meadow near Spring Valley Lakes (along road to Woodside) Comment
  UC1084413  Calandrinia ciliata G. Thomas Robbins 1937-4-11 105 San Mateo grassy meadow near Spring Valley Lakes (along road to Woodside) Comment
  CAS-BOT-BC438379  Calandrinia ciliata G. Thomas Robbins 1944-6-13 1681 El Dorado At Institute of Forest Genetics, 3 mi. e. of Placerville 822 Comment
  SEINET195490  Calocedrus decurrens G. T. Robbins 1944-2-6 1484 El Dorado At CCC Camp Snowline 3 mi E of Camino 1036 Comment
  UCD132920  Calocedrus decurrens W. W. Robbins 1928-4-29 949 Unknown County Unknown: American River. Comment
  UCD139459  Calochortus albus W. W. Robbins 1926-4-17 512 Nevada Grass Valley. Comment
  CAS-BOT-BC487462  Calochortus albus G. Thomas Robbins 1943-4-30 1052 El Dorado At western edge of Institute of Forest Genetics, 2 1/2 miles E of Placerville 731 Comment
  UC747521  Calochortus albus G. Thomas Robbins 1943-4-30 1052 El Dorado 2.5 mi e Placerville (at the w edge of the Institute of Forest Genetics); Institute of Forest Genetics 731 Comment
  UCD139460  Calochortus albus W. W. Robbins 1928-4-29 974 Unknown County Unknown: American River. Comment
  CAS-BOT-BC132323  Calochortus clavatus G. Thomas Robbins 1944-7-12 1762 El Dorado Above North Fork Webber Creek, ca. 3 mi. e. of Camino 914 Comment
  GH357319  Calochortus clavatus var. avius G. T. Robbins 1944-7-12 1762 Unknown North Fork Webber Creek, about 3 miles east of Camino, El Dorado County 914 Comment
  UC747650  Calochortus clavatus var. avius G. Thomas Robbins 1943-7-10 1264 El Dorado about 3 mi e Camino (above North Fork Webber Creek) 914 Comment
  GH404199  Calochortus coeruleus G. T. Robbins 1944-6-18 1727 Unknown Capps Crossing road on Camp Creek Ridge 1371 Comment
  SBBG57695  Calochortus leichtlinii J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  RSA32302  Calochortus leichtlinii G. Thomas Robbins 1943-7-25 1284 El Dorado Above Lake Le Conte E of Medley Lakes, Desolation Valley Wilderness Area. 2591 Comment
  SBBG57697  Calochortus leichtlinii J. R. and R. C. Robbins 1932-7-17 Mariposa Tioga Pass Rd Comment
  SBBG57727  Calochortus luteus J. R. and R. C. Robbins 1932-6-8 Tulare Sequoia Nat Park 914 Comment
  CAS-BOT-BC492568  Calochortus minimus G. Thomas Robbins 1943-4-25 1029 El Dorado Open Ponderosa pine woods on ridge SE and above North Fork Webber Creek cayon, ca. 3 mi. e. of Camino. 1036 Comment
  UCD139563  Calochortus monophyllus W. W. Robbins 1926-4-17 516 Nevada Grass Valley. Comment
  CAS-BOT-BC492620  Calochortus monophyllus G. Thomas Robbins 1943-3-31 977 El Dorado At western edge of Institute of Forest Genetics above Smith Flat 792 Comment
  UC747551  Calochortus nudus G. Thomas Robbins 1943-4-25 1029 El Dorado ca 3 mi e Camino (on ridge se and above North Fork Webber Creek canyon) 1036 Comment
  GH404196  Calochortus nudus G. T. Robbins 1943-4-25 1029 Unknown ridge south east and above North Fork Webber Creek, about 3 miles east of Camino 1036 Comment
  UCSB637  Calochortus pulchellus Robbins, G. 1936-5-1 Lake On Cobb Mt. highway east of Whispering Pines Resort Comment
  UC1057483  Calochortus tolmiei G. Thomas Robbins 1938-4-15 254 Sonoma 2.5 mi e Bodega Bay Comment
  CAS-BOT-BC496753  Calochortus venustus G. Thomas Robbins 1943-5-29 1106 El Dorado Open, grassy areas on Digger pine woodland slope at western edge on Institute of Forest Genetics, 3 mi. e. of Placerville. 731 Comment
  UC747450  Caltha biflora G. Thomas Robbins 1943-6-27 1230 El Dorado Along U.S. Highway 50 just east of Echo Summit Pass. 2286 Comment
  SBBG71686  Caltha leptosepala J. R. and R. C. Robbins 1932-7-16 Mariposa Porcupine Flat, Tioga Pass Rd Comment
  UC747594  Calycadenia multiglandulosa G. Thomas Robbins 1943-5-28 1101 El Dorado Western edge of Institute of Forest Genetics 731 Comment
  UC747175  Calycadenia truncata G. Thomas Robbins 1943-7-15 1269 El Dorado 3 mi e Camino; North Fork Webber Creek 975 Comment
  JEPS16136  Calycadenia truncata G. Thomas Robbins with John Dawson and Bob Ornduff 1956-10-6 3794 Monterey along roadside between U.S. Forest Service China Camp Ground and Chews Ridge Lookout, on w slopes of Chews Ridge Santa Lucia Range 1402 Comment
  SD45400  Calyptridium monandrum G. Thomas Robbins 1950-4-2 3300 Kern Above Kern River about 1 mile northeast of Isabella 760 Comment
  SBBG69675  Calyptridium monospermum J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  UC746851  Calyptridium monospermum G. Thomas Robbins 1943-6-7 1135 El Dorado 4 mi s of Kyburz (above Silver Fork American River near Sacramento Box Sawmill (China Flat)) 1371 Comment
  SEINET195175  Calyptridium umbellatum G. T. Robbins 1943-7-25 1304 El Dorado Along the Desolation Valley trail near Haypress Meadows ca 2 mi NW of Echo Lake 2438 Comment
  UC747569  Calystegia occidentalis subsp. occidentalis G. Thomas Robbins 1944-6-13 1684 El Dorado 3 mi e Placerville (Institute of Forest Genetics); e of Placerville, Institute of Forest Genetics 822 Comment
  UC1057486  Calystegia sepium subsp. binghamiae G. Thomas Robbins 1940-5-19 327 Contra Costa San Joaquin River e Antioch; San Joaquin River e of Antioch Comment
  CAS-BOT-BC496967  Camassia leichtlinii subsp. suksdorfii G. Thomas Robbins 1944-7-30 1819 El Dorado Meadow near Maud Lake along Willow Flat Trail, ca. 4 mi. NE of Wright Lake 2438 Comment
  UC747520  Camassia quamash G. Thomas Robbins 1943-8-15 1348 El Dorado 2 1/2 mi ne of Wrights Lake (in streamlet of Grouse Lake); Grouse Lake 2438 Comment
  UC1084506  Camissonia campestris subsp. campestris G. Thomas Robbins 1940-5-19 328 Contra Costa e Antioch (slope above river); San Joaquin River Comment
  SEINET10463935  Campanula californica Robbins 1938-6-23 ROBBINS 269 Sonoma In march on Pitkin Ranch, Vine Hill region, about 10 miles west of Santa Rosa. Wet, boggy soil. Comment
  UC747034  Campanula prenanthoides G. Thomas Robbins 1943-6-20 1195 El Dorado rocky hillside on canyon side above South Fork American River (4-5 mi w of Pollock Pines) 914 Comment
  SEINET10463057  Campanula prenanthoides Robbins 1943-6-20 ROBBINS 1195 El Dorado On canyon side above South Fork American River, 4-5 miles west of Pollock Pines 914 Comment
  SEINET1869535  Campanulaceae G. Thomas Robbins, R. Bacigalupi, L. Constance, G. W. Gillett and L. R. Heckard 1952-1 3488 -A Inyo McLain Park, 8.8 miles south of Shoshone. 427 Comment
  SBBG72219  Cardamine californica J. R. and R. C. Robbins 1932-7-17 Tuolumne Tioga Pass Rd Comment
  JEPS25115  Cardaria draba G. Thomas Robbins 1959-3-29 3965 Alameda about 1 1/2 mi nw of Mount Eden (and about 3/4 mi s of Russell, just n of Depot Road at its w end, adjacent to the American Salt Company); San Francisco Bay 1 Comment
  JEPS25275  Cardaria pubescens G. Thomas Robbins 1959-9-13 4162 Contra Costa R.R. right-of-way above salt marsh at n. edge Pinole Comment
  RSA82896  Carduus tenuiflorus W. W. Robbins 1951-6-2 s.n. Alameda In a backyard in Berkeley Comment
  SEINET11840636  Carduus tenuiflorus W. W. Robbins 1951-1 s.n. Alameda Berkeley Comment
  UCD129928  Carduus tenuiflorus W. W. Robbins 1951-6-2 s.n. Alameda Berkeley. Comment
  UC972338  Carex abrupta G. Thomas Robbins 1951-7-26 3397 Fresno w Second Recess and Mono Creek; Laurel Creek basin 3108 Comment
  JEPS25138  Carex barbarae G. Thomas Robbins 1959-5-16 4008 Contra Costa Caly [clay] banks and rivulet just north of Point Orient, Potrero Hills, overlooking San Francisco Bay, Richmond Comment
  JEPS25239  Carex barbarae G. Thomas Robbins 1959-8-1 4116 Contra Costa Las Trampas Creek, about 1 1/2 miles SE of St. Mary's College 182 Comment
  RSA153458  Carex barbarae G. Thomas Robbins 1959-5-16 4008 Contra Costa Just north of Pt. Orient, Potrero Hills, overlooking San Francisco Bay, Richmond. Comment
  CAS-BOT-BC19389  Carex bolanderi G. Thomas Robbins 1944-5-28 1636 El Dorado Long Creek, 1 - 2 miles from its confluence with South Fork American River. 914 Comment
  CAS-BOT-BC19495  Carex bolanderi G. Thomas Robbins; John Weiler 1959-8-7 4135 Monterey Along Mill Creek, just below bridge crossing on State Highway 1, 3.5 to 4 miles north of (old) Gorda. 12 Comment
  UC972344  Carex breweri G. Thomas Robbins 1951-7-27 3400 Fresno Mono Divide, 1/4 mi S of pass at head of First Recess 3596 Comment
  CAS-BOT-BC34307  Carex congdonii G. Thomas Robbins 1951-8-3 3405 Fresno On northeastern slopes of Glacier Divide at its northern extremity, 2-3 miles south and east of Hutchinson Meadow. 3352 Comment
  UC964805  Carex cusickii G. Thomas Robbins 1950-5-13 3348 San Luis Obispo along w shore of Oso Flaco Lake Oso Flaco Lake Comment
  CAS-BOT-BC34959  Carex densa G. Thomas Robbins 1945-5-15 1903 El Dorado 0.5 mile east of Smithflat. 701 Comment
  CAS-BOT-BC20235  Carex filifolia var. erostrata G. Thomas Robbins 1951-7-24 3390 Fresno Pioneer Basin. 3230 Comment
  UC907665  Carex fracta G. Thomas Robbins 1944-6-7 1662 El Dorado 3 mi E of Camino (North Fork Webber Creek) 914 Comment
  UC972362  Carex heteroneura G. Thomas Robbins 1951-7-26 3396 Fresno West of Second Recess and Mono Creek; Laurel Creek basin Comment
  UC972340  Carex luzulina var. ablata G. Thomas Robbins 1951-7-26 3395 Fresno Laurel Creek, Laurel Creek Basin, W of Second Recess and Mono Creek 3108 Comment
  CAS-BOT-BC32216  Carex multicostata G. Thomas Robbins 1944-7-29 1801 El Dorado On ridge S and above Lake Schmidell, Desolation Valley Wilderness Area. 2590 Comment
  JEPS30776  Carex pansa G. Thomas Robbins 1950-5-13 3344 San Luis Obispo sand dunes se Oso Flaco Lake Comment
  UC964807  Carex pansa G. Thomas Robbins 1950-5-13 3344 San Luis Obispo se Oso Flaco Lake Comment
  JEPS22098  Carex praegracilis G. Thomas Robbins 1958-7-19 3908 Contra Costa at the edge of a small lagoon about 3/4 mi s Pt. San Pablo; San Francisco Bay, Richmond, Potrero San Pablo, Pt. Orient Comment
  JEPS25158  Carex praegracilis G. Thomas Robbins with John Weiler 1959-5-23 4029 Contra Costa at the nw edge of Brooks Island San Francisco Bay, Richmond, Brooks Island Comment
  JEPS15695  Carex specifica G. T. Robbins 1956-9-10 3762 Alpine Twin Lakes Forest Service public campground, on n shore of Twin Lakes Twin Lakes, Twin Lakes Forest Service public campground 2499 Comment
  JEPS25253  Carex spissa G. Thomas Robbins with John Weiler 1959-8-7 4137 Monterey boggy site along State Highway 1. 2.5 miles S of Pacific Valley School, 1.3 miles N of (new) Gorda, directly opposite (E of) Cape San Martin, 0.4 mile S of Willow creek crossing 60 Comment
  JEPS25105  Carex subbracteata G. Thomas Robbins 1959-4-18 3984 Contra Costa about 1/2 mi e Pt. San Pablo (overlooking San Pablo Bay); San Pablo Bay, Richmond 7 Comment
  JEPS25119  Carex subbracteata G. Thomas Robbins 1959-4-18 3985 Contra Costa 1/2 mi e Pt. San Pablo (overlooking San Pablo Bay); San Pablo Bay, Richmond 7 Comment
  CAS-BOT-BC116917  Carex subbracteata var. subbracteata G. Thomas Robbins 1959-4-18 3985 Contra Costa Overlooking San Pablo Bay, ca 1/2 mi E of Pt. San Pablo, Richmond. 7 Comment
  CAS-BOT-BC116696  Carex subfusca G. Thomas Robbins 1956-9-14 3788 El Dorado Along US Hwy 50, ca 1/2 mi NW of Echo Summit. 2225 Comment
  JEPS15674  Carex subfusca G. Thomas Robbins 1956-9-14 3788 El Dorado about 1/2 mi nw Echo Summit (along U. S. Highway 50) 2225 Comment
  UC747494  Carex tumulicola G. Thomas Robbins 1944-4-14 1536 Marin ca. 2 mi w Hamilton Field Air Base (Big Rock Ridge) 365 Comment
  UC972351  Carex utriculata G. Thomas Robbins 1951-7-30 3402 Fresno about 1 mile w Bear Creek (s and w of Hilgard Branch of Bear Creek) 2926 Comment
  UC972356  Carex utriculata G. Thomas Robbins 1951-7-26 3393 Fresno w Second Recess and Mono Creek; Laurel Creek basin 3108 Comment
  JEPS7951  Carpenteria californica G. Thomas Robbins and Lawrence R. Heckard 1953-6-1 3561 Fresno granite slopes of mountain 4.8 mi se Auberry; Bald Mountain 914 Comment
  JEPS21966  Carthamus tinctorius G. Thomas Robbins with S. Galen Smith 1958-6-2 3850 Contra Costa at junction with U.S. Highway 40 Franklin Canyon Road (State Highway 4) (Hercules (a short distance w of its e boundary)); Hercules, Franklin Canyon Comment
  A362594  Cassiope mertensiana subsp. californica G. T. Robbins 1943-7-25 1294 Unknown on slopes east of Medley Lakes, Desolation Valley Wilderness Area 2590 Comment
  GH362595  Cassiope mertensiana subsp. californica G. T. Robbins 1943-7-25 1294 Unknown on slopes east of Medley Lakes, Desolation Valley Wilderness Area 2590 Comment
  UC747663  Cassiope mertensiana subsp. californica G. Thomas Robbins 1943-7-25 1294 El Dorado East of Medley Lakes, Desolation Valley Wilderness Area. 2590 Comment
  JEPS23268  Castilleja G. Thomas Robbins with John Weiler 1959-8-8 4148 San Luis Obispo about 1.5 mi sw Oso Flaco Lake; ; HEXAPLOID 15 Comment
  JEPS3653  Castilleja G. T. Robbins and L. R. Heckard 1953-5-31 489 Stanislaus Knights Ferry; Stanislaus River Comment
  CAS-BOT-BC249084  Castilleja affinis G. T. Robbins; L. R. Heckard 1953-5-31 489 Stanislaus Along the Stanislaus River at Knights Ferry Comment
  SBBG100029  Castilleja affinis G. T. Robbins, K. Harrison 1955-5-16 5140 San Luis Obispo upper reaches of Camatta Cyn, 1.6 mi N of jct of Camatta Cyn Rd, with direct rd from La Panza to Creston 396 Comment
  JEPS15585  Castilleja affinis subsp. affinis G. Thomas Robbins 1956-8-18 3741 San Mateo immediately n mouth of Butano Creek (nw of Pescadero) Comment
Read comments
Feb 28 2011
  JEPS15586  Castilleja affinis subsp. affinis G. Thomas Robbins 1956-8-18 3740 San Mateo immediately n mouth of Butano Creek (nw of Pescadero) Comment
Read comments
Feb 28 2011
  JEPS19388  Castilleja affinis subsp. affinis G. Thomas Robbins 1940-3-24 309 Sonoma about 6 mi e Santa Rosa (on Rincon Grade); Rincon Grade 167 Comment
  JEPS23818  Castilleja affinis subsp. affinis G. Thomas Robbins 1959-4-18 3990 Contra Costa about 0.25 mi e and above Pt. San Pablo; Richmond 30 Comment
  JEPS7782  Castilleja affinis subsp. affinis G. Thomas Robbins and Lawrence R. Heckard 1953-6-1 3568 Fresno 2.5 mi se Auberry; Bald Mountain 786 Comment
  JEPS15547  Castilleja affinis subsp. affinis G. Thomas Robbins 1956-8-13 3733 San Francisco near Lands End (just below Lincoln Park); San Francisco 45 Comment
  JEPS23825  Castilleja affinis subsp. affinis G. Thomas Robbins with John Weiler 1959-8-7 3144 Monterey between Lopez Point and Cape San Martin (just below bridge crossing on State Hwy 1, bank of Mill Creek); Mill Creek 12 Comment
  GH365404  Castilleja ambigua G. T. Robbins 1945-5-9 1899 Unknown 1/2 mile north of Hamilton Field Air Base Comment
  UC907616  Castilleja ambigua subsp. ambigua G. Thomas Robbins with J. T. Howell 1945-5-9 1899 Marin 0.5 mi n Hamilton Field Air Base Comment
  JEPS4843  Castilleja angustifolia G. T. Robbins and Rimo Bacigalupi 1952-4-17 3425 Kern 4.7 mi n Freeman Junction (above (w of) Homestead, on U.S. Highway 6) Comment
  UC907718  Castilleja applegatei subsp. pallida G. Thomas Robbins 1943-6-27 1220 El Dorado ca 0.75 mi sw U.S. Hwy. 50 (e slope of ridge above Echo Summit) 2438 Comment
  SBBG66955  Castilleja applegatei subsp. pinetorum J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  UC907705  Castilleja applegatei subsp. pinetorum G. Thomas Robbins 1943-5-2 1061 El Dorado ca 3 mi e Camino (slope above North Fork Webber Creek) 914 Comment
  UC907722  Castilleja applegatei subsp. pinetorum G. Thomas Robbins 1944-4-23 1550 El Dorado ca 5 mi n Camino (along shore of South Fork American River, near Michigan-California Lumber Co. Railroad Tramway); South Fork American River 792 Comment
  UC747075  Castilleja attenuata G. Thomas Robbins 1944-4-14 1541 Marin immediately w Hamilton Field Air Base 30 Comment
  UCSB5969  Castilleja chromosa Robbins, G.; Bacigalupi, Rimo 1952-4-17 Kern Alluvial slopes above (west of) Homestead, on U.S. Highway No. 6, 4.7 miles north of Freeman Junction Comment
  JEPS19395  Castilleja exserta subsp. exserta G. Thomas Robbins 1938-4-15 261 Sonoma 6-7 mi w Santa Rosa (along road to Graton) Comment
  JEPS7773  Castilleja foliolosa G. Thomas Robbins 1953-5-8 3518 Calaveras about 1.5 mi n Murphys (near Mercer Cave) 701 Comment
  UC747050  Castilleja foliolosa G. Thomas Robbins 1944-4-14 1543 Marin about 1 mi w Hamilton Field Air Base; Big Rock Ridge 152 Comment
  UC907617  Castilleja lacera G. Thomas Robbins 1944-5-22 1627 El Dorado 2-3 mi e Placerville 762 Comment
  CAS-BOT-BC251408  Castilleja lemmonii G. Thomas Robbins 1944-7-28 1785 El Dorado Moist meadow on rocky granite slope along Willow Flat Trail, 1/4 mi. w. of Rockbound Pass 2438 Comment
  UC907747  Castilleja lemmonii G. Thomas Robbins 1944-7-28 1785 El Dorado 0.25 mi w Rockbound Pass (along Willow Flat Trail) 2438 Comment
  JEPS7772  Castilleja lineariloba G. Thomas Robbins 1953-5-8 3525 Calaveras 4.7 mi w Glencoe (slopes of Rich Gulch, Mokelumne Hill to Glencoe road); Rich Gulch 457 Comment
  RSA102186  Castilleja miniata G. Thomas Robbins 1944-7-28 1773 El Dorado Willow Flat Trail at Willow Flat, ca. 3 mi. NE of Wrights Lake. 2287 Comment
  RSA32360  Castilleja miniata G. Thomas Robbins 1943-7-25 1333 El Dorado Along road to Echo Lake, ca. 1 mi. s. of US Highway 50. 2195 Comment
  RSA32378  Castilleja miniata G. Thomas Robbins 1944-7-28 1773 El Dorado Willow Flat Trail at Willow Flat, ca. 3 mi. NE of Wrights Lake. 2287 Comment
  JEPS15580  Castilleja nana G. Thomas Robbins 1956-9-9 3757 Alpine 0.5 to 0.75 mi due w Carson Pass (above State Hwy 88); Red Lake Peak 2651 Comment
  JEPS6871  Castilleja nana G. Thomas Robbins 1954-7-24 3630 Tulare upper reaches Crabtree Creek; Sequoia National Park 3444 Comment
  UC747085  Castilleja nana G. Thomas Robbins 1944-7-28 1777 El Dorado 2-3 mi ne Wrights Lake (along Willow Flat Trail) 2286 Comment
  UC747091  Castilleja nana G. Thomas Robbins 1943-9-5 1388 El Dorado near summit of Dicks Pass (below Dicks Peak); Dicks Pass 2895 Comment
  UC907745  Castilleja nana G. Thomas Robbins 1945-8-12 2126 El Dorado near summit of Freel Peak; Freel Peak 3322 Comment
  UC907743  Castilleja parviflora G. Thomas Robbins 1944-7-28 1796 El Dorado along shore Lake Lois (Rockbound Valley); Desolation Valley Wilderness Area, Rockbound Valley 2590 Comment
  UC907746  Castilleja parviflora G. Thomas Robbins 1944-7-28 1786 El Dorado 0.25 mi w Rockbound Pass (along Willow Flat Trail) 2438 Comment
  RSA102185  Castilleja peirsonii G. Thomas Robbins 1944-7-28 1796 El Dorado Along shore of Lake Lois, Rockbound Valley, Desolation Valley Wilderness Area. 2591 Comment
  JEPS7055  Castilleja praeterita G. Thomas Robbins 1954-7-20 3623 Tulare above Whitney Creek (along John Muir Trail below Timberline Lake and above Crabtree Meadows); Sequoia National Park 3352 Comment
  OBI9706  Castilleja subinclusa subsp. franciscana G. Thomas Robbins 1955-6-4 3656 Marin Bluffs facing the ocean, NW of Rodeo Lagoon Comment
  JEPS16112  Castilleja subinclusa subsp. subinclusa G. Thomas Robbins, and Rimo Bacigalupi with Lindoln Constance, George Gillett, and L. R. Heckard 1952-4-26 3465 Kern just w Weldon (immed s of Calif State Hwy 178) 822 Comment
  JEPS16121  Castilleja subinclusa subsp. subinclusa G. Thomas Robbins, and Rimo Bacigalupi with Lindoln Constance, George Gillett, and L. R. Heckard 1952-4-26 3461 Kern about 6 mi w Democrat Hot Springs (slope above Kern River); Kern River Canyon 533 Comment
  OBI9684  Castilleja subinclusa subsp. subinclusa G. Thomas Robbins & Rimo Bacigalupi, Rimo Bacigalupi 1952-4-16 3415 San Luis Obispo 1/4 mi W of summit of Cottonwood Pass, near the San Luis Obispo-Kern county line, along state hwy 41 762 Comment
  UC747076  Castilleja tenuis G. Thomas Robbins 1944-7-28 1770 El Dorado near Wrights Lake 2133 Comment
  UC964806  Caulanthus coulteri G. Thomas Robbins 1950-4-2 3295 Kern about 1 mi ne Isabella (above Kern River); , ne of Isabella 762 Comment
  SBBG71355  Ceanothus cordulatus J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  SBBG71359  Ceanothus cordulatus J. R. and R. C. Robbins 1932-7-18 El Dorado W side of Lake Tahoe Comment
  UC746925  Ceanothus cordulatus G. Thomas Robbins 1945-8-5 2089 El Dorado Rockbound Lake Desolation Valley Wilderness Area, Rockbound Valley 2011 Comment
  UC747323  Ceanothus cordulatus G. Thomas Robbins 1943-6-4 1113 El Dorado 2-3 mi s Kyburz (near Sacramento Box Sawmill (China Flat)); Silver Fork American River Comment
  CAS-BOT-BC49347  Ceanothus cuneatus G. Thomas Robbins 1943-4-10 989 El Dorado On canyonside above North Fork Webber Creek, 3 mi. e. of Camino 1036 Comment
  UC907784  Ceanothus cuneatus G. Thomas Robbins 1944-4-23 1545 El Dorado ca 1 mi e Camino (along US Hwy 50) 975 Comment
  SEINET13945810 Image available Ceanothus cuneatus G. Thomas Robbins 1940-1 295 Sonoma Creek bed of canyon along Chalk Hill road, foothills ca 6 mi E of Windsor. Elev ca 300 ft 91 Comment
  CAS-BOT-BC49811  Ceanothus diversifolius G. Thomas Robbins 1943-4-29 1045 El Dorado Open pine woods along U.S. Highway 50 at C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  SEINET13945888 Image available Ceanothus foliosus G. Thomas Robbins 1938-1 257 Sonoma Along road to Occidental W of Green Valley Comment
  JEPS25144  Ceanothus foliosus var. foliosus G. Thomas Robbins 1959-5-16 4014 Sonoma Spring Mountain Road, between Calistoga Road and Sonoma-Napa County line Mayacamas Mountains 518 Comment
  UC1084483  Ceanothus foliosus var. vineatus G. Thomas Robbins 1938-4-15 257 Sonoma along road to Occidental W q Green Valley. Comment
  CAS-BOT-BC50882  Ceanothus fresnensis G. Thomas Robbins 1945-8-5 2095 El Dorado Slopes along Georgetown Road, 4-5 mi. e. of Wentworth Springs 1981 Comment
  UC746922  Ceanothus fresnensis G. Thomas Robbins 1945-8-5 2095 El Dorado Along Georgetown Road, 4-5 mi E of Wentworth Springs 1981 Comment
  UC631633  Ceanothus gloriosus var. exaltatus G. Thomas Robbins 1940-3-22 300 Sonoma Guerneville road, Vine Hill region, about 8 1/2 miles west of Santa Rosa. 45 Comment
  CAS-BOT-BC50116  Ceanothus integerrimus G. Thomas Robbins 1943-4-30 1059 El Dorado at Institute of Forest Genetics, 3 mi. E. of Placerville 792 Comment
  CAS-BOT-BC51739  Ceanothus lemmonii G. Thomas Robbins 1945-4-22 1848 El Dorado 2-3 mi. NW of Shingle Springs 457 Comment
  UC907682  Ceanothus lemmonii G. Thomas Robbins 1945-6-30 2016 El Dorado immediately w of Rescue 396 Comment
  UCD112187  Ceanothus lemmonii W. W. Robbins 1926-4-17 521 Nevada Grass Valley. Comment
  UCSB4003  Ceanothus oliganthus var. sorediatus Robbins, G. 1937-4-25 Alameda Just east of Claremont Ave., Berkeley Comment
  CAS-BOT-BC63463  Ceanothus palmeri G. Thomas Robbins 1945-5-20 1919 El Dorado Along Placerville-Rescue Rd., 3 mi. e. of Rescue. 457 Comment
  GH349995  Ceanothus palmeri G. T. Robbins 1945-5-20 1919 Unknown along Placerville-Rescue road, 3 mi. e. of Rescue 457 Comment
  UC746923  Ceanothus palmeri G. Thomas Robbins 1945-5-20 1919 El Dorado along Placerville-Rescue Road 3 mi e Rescue; along Placerville-Rescue Road 457 Comment
  JEPS25143  Ceanothus parryi G. Thomas Robbins 1959-5-16 4013 Sonoma on Spring Mtn Road between Calistoga Road and Sonoma-Napa County line (along upper Mark West Creek, Mayacamas Mts.); Mayacamas Mts., along upper Mark West Creek 426 Comment
  SBBG68542  Ceanothus perplexans R. C. and J. R. Robbins 1933-2-15 Riverside Pinyon Flat, Palms to Pines (St Hwy 74) Comment
  A425107  Ceanothus prostratus G. T. Robbins 1945-8-12 2142 Unknown along road to HIgh Meadow, 6-8 mi. SE of Lake Tahoe 2133 Comment
  POM181680  Ceanothus prostratus L. F. Robbins 1927-5-6 s.n. El Dorado Placerville Comment
  UC746930  Ceanothus prostratus G. Thomas Robbins 1943-7-23 1281 El Dorado 3 mi e Camino (at C.C.C. Camp Snowline); e of Camino 1036 Comment
  UC747322  Ceanothus prostratus G. Thomas Robbins 1943-4-11 990 El Dorado along US Hwy 50, 3 mi E of Camino 1036 Comment
  SBBG68548  Ceanothus prostratus var. prostratus J. R. and R. C. Robbins 1932-7-18 El Dorado W side, Lake Tahoe Comment
  CAS-BOT-BC52204  Ceanothus roderickii G. Thomas Robbins 1945-4-22 1843 El Dorado 2-3 mi. Northwest of Shingle Springs 457 Comment
  JEPS25256  Ceanothus thyrsiflorus G. Thomas Robbins with John Weiler 1959-8-7 4141 San Luis Obispo 1.8 mi n Arroyo de la Cruz (w of State Hwy 1, 5.6 mi s of the Monterey Co. line) Comment
  SBBG71399  Ceanothus thyrsiflorus var. griseus Mrs. J. Robbins 1930-4-12 Santa Barbara Point Sal Comment
  UC746918  Ceanothus tomentosus G. Thomas Robbins 1943-4-25 1034 El Dorado ca 3 mi e Camino (slope above North Fork Webber Creek); above North Fork Webber Creek 914 Comment
  CAS-BOT-BC52924  Ceanothus tomentosus var. tomentosus G. Thomas Robbins 1943-4-25 1034 El Dorado Slope above North Fork Webber Creek, ca. 3 mi. e. of Camino 914 Comment
  A425557  Ceanothus velutinus G. T. Robbins 1945-7-8 2055 Unknown rocky slopes above Eagle Lake along Velma Lakes trail, Desolation Valley Wilderness Area 2286 Comment
  GH425556  Ceanothus velutinus G. T. Robbins 1945-7-8 2055 Unknown rocky slopes above Eagle Lake along Velma Lakes trail, Desolation Valley Wilderness Area 2286 Comment
  UCD130009  Centaurea calcitrapa G. Thomas Robbins 1958-6-21 3875 Alameda along Oakport Road, paralleling the Eastshore Freeway, between High St. and Hegenberger Road, Oakland, just west of San Leandro Bay. Comment
  UCD130010  Centaurea calcitrapa W. W. Robbins 1931-7-26 2241 Solano Near Benicia Reservoir, Benicia. Comment
  UCD81560  Centaurea calcitrapa W. W. Robbins; W. D. Norton 1927-10-1 s.n. Yolo West of Davis. Comment
  RSA32357  Centaurea melitensis G. Thomas Robbins 1943-5-28 1097 El Dorado Western edge of Institute of Forest Genetics, 3 miles east of Placerville 762 Comment
  UCD130060  Centaurea melitensis W. W. Robbins; A. S. Crafts 1931-9-18 2260 Stanislaus Modesto - Justine. Comment
  RSA114100  Centaurium namophilum G. Thomas Robbins 1943-7-15 1267 El Dorado On canyon side above North Fork Webber Creek, about 3 miles east of Camino. 976 Comment
  UC1008642  Centaurium venustum G. Thomas Robbins 1943-6-5 1127 El Dorado 3 mi e Camino (on canyon slope above North Fork Webber Creek) 1036 Comment
  UCD81542  Centromadia fitchii W. W. Robbins; W. D. Norton 1927-10-1 822 Yolo West of Davis. Comment
  UCD130155  Centromadia parryi subsp. rudis W. W. Robbins; W. D. Norton 1927-10-1 833 Yolo West of Davis. Comment
  JEPS25088  Centromadia pungens subsp. pungens G. Thomas Robbins 1958-10-11 3948 Alameda low field at the edge San Francisco Bay (at w end of West Ave. 135, western San Leandro); San Leandro, Mulford Gardens section Comment
  JEPS30777  Centunculus minimus G. Thomas Robbins with J. T. Howell 1945-5-9 1883 Marin 1/2 mi n of Hamilton Field Air Base Comment
  UC746955  Cephalanthera austiniae G. Thomas Robbins 1943-6-8 1142 El Dorado ca. 3 mi. e. Camino (N. Fork Webber Creek); N. Fork Webber Creek 914 Comment
  UC1084416  Cerastium glomeratum G. Thomas Robbins 1937-4-11 101 San Mateo near Spring Valley Lakes along rd. to Woodside Comment
  CAS-BOT-BC179511  Cercis occidentalis G. Thomas Robbins 1945-4-22 1842 El Dorado 2-3 mi NW of Shingle Springs. 457 Comment
  SBBG68355  Cercis occidentalis J. R. and R. C. Robbins 1930-3-28 Kern S Fork Kern River, 10 mi E of Isabella Comment
  UC746982  Cercis occidentalis G. Thomas Robbins 1945-4-22 1842 El Dorado 2-3 mi nw Shingle Springs 457 Comment
  UC1084435  Cercocarpus betuloides var. betuloides G. Thomas Robbins 1940-3-21 293 Sonoma 5-6 mi e of Windsor (Barnes Creek along Chalk Hill Road); Barnes Creek 38 Comment
  GH345447  Cercocarpus ledifolius G. T. Robbins 1945-8-12 2136 Unknown rocky slope above shore of Star Lake, along trail to Freel Peak 2804 Comment
  CAS-BOT-BC135621  Cercocarpus ledifolius var. ledifolius G. Thomas Robbins 1945-8-12 2136 El Dorado Rocky slope above shore of Star Lake, along trail to Freel Peak 2804 Comment
  UC747008  Cercocarpus ledifolius var. ledifolius G. Thomas Robbins 1945-8-12 2136 El Dorado along trail to Freel Peak (above shore of Star Lake) 2804 Comment
  JEPS7973  Chaenactis alpigena G. Thomas Robbins and Peter H. Raven 1954-7-26 3633 Tulare on high ridge overlooking and ne Crabtree Meadows; Sequoia National Park 3505 Comment
  CAS-BOT-BC100649  Chaenactis douglasii var. alpina G. Thomas Robbins 1943-9-5 1384 El Dorado near summit of Dicks Peak 3048 Comment
  UC747182  Chaenactis douglasii var. alpina G. Thomas Robbins 1943-9-5 1384 El Dorado near summit of Dicks Peak 3048 Comment
  UC907771  Chaenactis douglasii var. douglasii G. Thomas Robbins 1945-7-8 2048 El Dorado near Al Tahoe (southern shore of Lake Tahoe); Lake Tahoe 1920 Comment
  CAS-BOT-BC276862  Chaenactis fremontii G. T. Robbins; Rimo Bacigalupi 1952-4-16 3418 Kern Roadcut about 1/4 mile E of Kern - San Luis Obispo county line, along California State Highway 41, in extreme NW corner of Kern County, Cottonwood Pass 548 Comment
  JEPS14586  Chaenactis glabriuscula var. glabriuscula G. Thomas Robbins with Peter H. Raven 1956-4-28 3680 El Dorado 2 mi w Greenwood (8.3 mi w of Georgetown) 502 Comment
  JEPS8066  Chaenactis glabriuscula var. glabriuscula G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3550 Tulare 10.5 mi se of Three Rivers; South Fork of Kaweah River 908 Comment
  UC907756  Chaenactis glabriuscula var. glabriuscula G. Thomas Robbins 1945-4-22 1864 El Dorado 3 mi e of Shingle Springs 457 Comment
  SD137003  Chaenactis stevioides G. Thomas Robbins 1950-4-7 3323 Inyo Larrea divaricata plain about 5 miles south of Lone Pine 1064 Comment
  CAS-BOT-BC140770  Chamaebatia foliolosa G. Thomas Robbins 1943-6-2 1110 El Dorado At CCC Camp Snowline, 3 mi. e. of Camino 1036 Comment
  UC746971  Chamaebatia foliolosa G. Thomas Robbins 1943-6-2 1110 El Dorado 3 mi e of Camino (at CCC Camp Snowline) 1036 Comment
  UCD112941  Chamaebatia foliolosa W. W. Robbins 1926-4-17 519 Nevada Grass Valley. Comment
  UCD112942  Chamaebatia foliolosa W. W. Robbins 1928-4-29 957 Sacramento American River. Comment
  SBBG70526  Chamaebatia foliolosa J. R. and R. C. Robbins 1932-7-16 Mariposa Tioga Pass Rd Comment
  UC747012  Chamaebatiaria millefolium G. Thomas Robbins 1945-10-6 2151 Lassen nw slope ofCrater Lake Mountain, Lassen National Forest Crater Lake Mountain; Lassen National Forest, Crater Lake Mountain 1981 Comment
  SBBG34250  Chamaecyparis lawsoniana R. C. and J. R. Robbins 1930-11-26 Del Norte Smith River Valley Comment
  UC747295  Chamaesyce serpyllifolia G. Thomas Robbins 1944-6-27 1735 El Dorado 3 mi e Camino (slope above North Fork of Webber Creek) 975 Comment
  UCSB4328  Chamerion angustifolium subsp. circumvagum Robbins, G. 1936-8-1 Humboldt Roadside between Carlotta and Strongs Station Comment
  JEPS15549  Cheilanthes gracillima G. Thomas Robbins with L. R. Heckard 1956-7-25 3706 Colusa due s of Snow Mt East (and skirting e base of ridge forming Snow Mt West) 1981 Comment
  UC747634  Cheilanthes gracillima G. Thomas Robbins 1945-6-17 1995 El Dorado near Baltic Peak (slope above Camp Creek) 975 Comment
  UC964853  Cheilanthes gracillima G. Thomas Robbins 1944-4-23 1546 El Dorado above Slab Creek near its juncture with S Fork American River 609 Comment
  CAS-BOT-BC68289  Cheilanthes gracillima G. Thomas Robbins 1944-4-23 1546 El Dorado On slope above Slab Creek near its juncture with South Fork American River 609 Comment
  UCD97776  Chenopodium album W. W. Robbins; S. W. Winter Date Unknown 780 Sutter Sutter Basin. Comment
  UC746898  Chenopodium botrys G. Thomas Robbins 1943-7-6 1248 El Dorado 3 mi e Camino; C.C.C. Camp Snowline 1036 Comment
  SD189615  Chenopodium californicum Jolynn Robbins 2006-4-9 42 San Diego Damon Lane County Park in south El Cajon. N of the intersection of Fury Ln and Wieghorst Way. 68 Comment
  CAS-BOT-BC497668  Chlorogalum pomeridianum G. Thomas Robbins 1944-6-29 1745 El Dorado Above North Fork Webber Creek, ca 3 mi E of Camino 914 Comment
  UC747015  Chlorogalum pomeridianum var. pomeridianum G. Thomas Robbins 1944-6-29 1745 El Dorado ca 3 mi e Camino (above North Fork Webber Creek); North Fork Webber Creek 914 Comment
  OBI9580  Chloropyron maritimum subsp. palustre G. Thomas Robbins, S. Galen Smith 1958-7-8 3894 Marin Salt marsh at NW edge of Schooner Bay. Point Reyes peninsula. 300 yards SW of Sir. Francis Drake Hwy Comment
  CAS-BOT-BC191570  Chorizanthe cuspidata var. cuspidata G. Thomas Robbins 1955-4-23 3653 San Francisco Stabilized sand hills facing the ocean. Below Olympic Golf Club, San Francisco Comment
  CAS-BOT-BC252681  Chorizanthe membranacea G. Thomas Robbins 1943-6-5 1654 El Dorado Above North Fork Webber Creek, 3 mi. E of Camino 975 Comment
  SBBG62197  Chorizanthe membranacea J. R. and R. C. Robbins 1932-6-8 Tulare Marble Fk River 457 Comment
  UC746877  Chorizanthe membranacea G. Thomas Robbins 1943-6-5 1654 El Dorado 3 mi e Camino (above North Fork Webber Creek); above North Fork Webber Creek 975 Comment
  UC746889  Chorizanthe polygonoides var. polygonoides G. Thomas Robbins 1945-5-18 1914 El Dorado 3 mi e Placerville (at edge Eddy Arboretum, Institute of Forest Genetics); e of Placerville, Institute of Forest Genetics 792 Comment
  JEPS8040  Chorizanthe rigida G. Thomas Robbins and Rimo Bacigalupi with L. Constance, L. R. Heckard, G. W. Gillett 1952-5-1 3484 San Bernardino along State Highway 127 about 3 mi s of summit Ibex Pass; s of summit Ibex Pass 381 Comment
  A344123  Chrysolepis sempervirens G. T. Robbins 1943-8-15 1360 Unknown Along roadside to Wrights Lake, 2-3 mi. n. of U.S. Highway 50 1981 Comment
  UCD103869  Chylismia claviformis W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD103874  Chylismia claviformis W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD81559  Cichorium intybus W. W. Robbins; W. D. Norton 1928-8-1 1420 Yolo near Clarksburg. Comment
  UC747190  Cirsium occidentale var. californicum G. Thomas Robbins 1945-6-17 1991 El Dorado above Camp Creek (near Baltic Peak) 975 Comment
  UC747218  Cirsium scariosum var. americanum G. Thomas Robbins 1943-9-5 1372 El Dorado rocky crevices on summit Mt. Tallac 2956 Comment
  OBI12140  Clarkia amoena subsp. huntiana G. Thomas Robbins 1959-5-16 4015 Sonoma Spring Mtn rd, between Califstoga Rd and Sonoma-Napa county line, Mayacamas Mt 488 Comment
  UC747284  Clarkia arcuata G. Thomas Robbins 1943-6-13 1168 El Dorado w of junction Plum Creek and Hazel Valley roads (along Park Creek road) 1219 Comment
  UC747268  Clarkia biloba G. Thomas Robbins 1944-6-9 1669 El Dorado about 3 mi e Placerville (U. S. Highway 50) 731 Comment
  RSA32307  Clarkia biloba subsp. brandegeeae G. Thomas Robbins 1943-6-21 1207 El Dorado West of Institute of Forest Genetics, 3 miles E of Placerville. 732 Comment
  SBBG60273  Clarkia bottae J. R. and R. C. Robbins 1932-7-23 Del Norte 5 mi S of Crescent City Comment
  UCSB4287  Clarkia concinna Robbins, G. 1936-6-4 Sonoma Bennett Valley Comment
  JEPS25145  Clarkia gracilis subsp. sonomensis G. Thomas Robbins 1959-5-16 4015 Sonoma Spring Mt. Road Mayacamas Mt. (between Calistoga Road and Sonoma-Napa County line) 487 Comment
  UC747236  Clarkia heterandra G. Thomas Robbins 1945-6-17 1987 El Dorado above Camp Creek near Baltic Peak Comment
  RSA32409  Clarkia heterandra G. Thomas Robbins 1945-6-17 1987 El Dorado Above Camp Creek near Baltic Peak. 976 Comment
  RSA32306  Clarkia purpurea subsp. quadrivulnera G. Thomas Robbins 1944-5-22 1628 El Dorado Along U. S. Highway 50, 2-3 miles E of Placerville 610 Comment
  RSA41246  Clarkia purpurea subsp. quadrivulnera G. Thomas Robbins 1943-5-28 1096 El Dorado Western edge of Institute of Forest Genetics, 3 miles east of Placerville 762 Comment
  RSA41251  Clarkia purpurea subsp. quadrivulnera G. Thomas Robbins 1945-5-20 1632 El Dorado Sweetwater Creek near Simpson s Ranch, 4-5 miles south of Salmon Falls 183 Comment
  UC747271  Clarkia purpurea subsp. viminea G. Thomas Robbins 1945-6-5 1970 El Dorado above Smithflat 701 Comment
  RSA41250  Clarkia purpurea subsp. viminea G. Thomas Robbins 1945-6-5 2970 El Dorado Hillside above Smithflat 701 Comment
  CAS-BOT-BC164789  Clarkia rhomboidea G. Thomas Robbins 1945-7-15 2061 El Dorado Along U.S. Highway 50, 3 mi. e. of Camino 1036 Comment
  SBBG60266  Clarkia rhomboidea J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UC747273  Clarkia rhomboidea G. Thomas Robbins 1945-7-15 2061 El Dorado 3 mi e Camino (along U. S. Highway 50) 1036 Comment
  CAS-BOT-BC164802  Clarkia rhomboidea G. Thomas Robbins 1943-6-17 1183 El Dorado Along U.S. Highway 50, 3 mi. e. of Carmino 1036 Comment
  UC747278  Clarkia unguiculata G. Thomas Robbins 1944-6-9 1668 El Dorado 3 mi e Placerville (near Institute of Forest Genetics) 792 Comment
  RSA41254  Clarkia unguiculata G. Thomas Robbins 1944-6-9 1668 El Dorado Institute of Forest Genetics, 3 miles east of Placerville 793 Comment
  CAS-BOT-BC165726  Clarkia williamsonii G. Thomas Robbins 1945-6-5 1970 El Dorado Above [Smithflat] Smith Flat 701 Comment
  UC1057472  Claytonia exigua subsp. exigua G. Thomas Robbins 1940-3-21 296 Sonoma 506 mi e Windsor (Barnes Creek Canyon, e of Chalk Hill Road); Barnes Creek Canyon 121 Comment
  UC746853  Claytonia parviflora subsp. grandiflora G. Thomas Robbins 1943-4-10 987 El Dorado about 3 mi e Camino (slope above North Fork Webber Creek) 975 Comment
  JEPS15557  Claytonia saxosa G. Thomas Robbins with L. R. Heckard 1956-7-25 3724 Colusa 0.25 mi s Snow Mt. West summit (on ridge forming s extension of Snow Mt. West, Lake-Colusa County boundary); Snow Mt. West 2103 Comment
  CAS-BOT-BC499274  Clintonia uniflora G. Thomas Robbins 1943-6-13 1174 El Dorado About 1 mile south of Pacific Ranger Station, near Pacific 1219 Comment
  SBBG66388  Collinsia heterophylla J. R. and R. C. Robbins 1932-6-8 Tulare Marble Fk River 304 Comment
  UC747094  Collinsia heterophylla G. Thomas Robbins 1943-5-29 1105 El Dorado 3 mi e of Placerville (hillside near Institute of Forest Genetics) 762 Comment
  JEPS19379  Collinsia sparsiflora var. arvensis G. Thomas Robbins 1938-4-15 258 Sonoma 6-7 mi w Santa Rosa (along rd to Graton) Comment
  JEPS16480  Collinsia sparsiflora var. collina G. Thomas Robbins with Peter H. Raven 1956-4-29 3684 El Dorado 6 mi SE of Diamond Springs; Pleasant Valley Road Comment
  UC747079  Collinsia sparsiflora var. collina G. Thomas Robbins 1944-4-30 1574 El Dorado 3 - 4 mi e Newtown (along South Fork Webber Creek); South Fork Webber Creek, e of Newtown 914 Comment
  UC747124  Collinsia sparsiflora var. collina G. Thomas Robbins 1945-4-22 1852 El Dorado ca 2.5 mi e Shingle Springs 457 Comment
  RSA102187  Collinsia sparsiflora var. collina G. Thomas Robbins 1945-4-22 1852 El Dorado About 2.5 miles east of Shingle Springs. 457 Comment
  JEPS19373  Collinsia sparsiflora var. sparsiflora G. Thomas Robbins 1937-4-11 86 San Mateo near Spring Valley Lake (along rd to Woodside) Comment
  JEPS7778  Collinsia tinctoria G. Thomas Robbins, Lawrence R. Heckard 1953-5-30 3541 Tulare ca 7/5 mi n Springville (on rd to Balch Park, ca 0.5 mi e of Milo junction) 609 Comment
  RSA32388  Collinsia tinctoria G. Thomas Robbins 1945-6-23 2010 El Dorado Above North Fork Webber Creek, about 3 miles east of Camino. 976 Comment
  SBBG66610  Collinsia torreyi var. torreyi J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UC747089  Collinsia torreyi var. torreyi G. Thomas Robbins 1943-6-13 1170 El Dorado 2 mi w of Park Creek (along road to Park Creek) 1219 Comment
  JEPS15578  Collinsia torreyi var. wrightii G. Thomas Robbins 1956-9-10 3768 Alpine ca 2 mi airline s Carson Pass (along trail to Round Top and Elephant Back, between Woods Lake and Winnemucca Lake) 2621 Comment
  UCD123699  Collinsia torreyi var. wrightii W. W. Robbins 1925-6-20 1940 Sacramento American River. Comment
  UC747612  Collomia grandiflora G. Thomas Robbins 1944-6-27 1740 El Dorado top ridge above North Fork Webber Creek (about 3 mi e of Camino) 975 Comment
  RSA114106  Collomia heterophylla G. Thomas Robbins 1943-6-20 1189 El Dorado near head of Long Canyon, 2 to 3 miles west of Pollock Pines below and just south of road to powerhouse 915 Comment
  JEPS8072  Comandra umbellata subsp. californica G. Thomas Robbins, Lawrence R. Heckard 1953-6-1 3562 Fresno 4.8 mi se of Auberry (Bald Mountain); Bald Mountain 914 Comment
  SBBG71927  Condea emoryi R. C. and J. R. Robbins 1933-2-15 Riverside Tahquitz Cyn Comment
  JEPS25269  Conyza bonariensis G. Thomas Robbins 1959-8-30 4156 Alameda vacant lot at the corner of Excelsior Ct. and MacArthur Blvd. (just e of intersection of Lakeshore Ave.); Oakland 7 Comment
  SBBG58847  Corallorhiza maculata R. C. Robbins 1932-7-18 El Dorado W side of Lake Tahoe Comment
  UC746953  Corallorhiza maculata G. Thomas Robbins 1944-7-28 1766 El Dorado about 1/2 mi s Wrights Lake 2133 Comment
  UC746959  Corallorhiza maculata G. Thomas Robbins 1943-6-6 1131 El Dorado 3-4 mi ne Camino (bank of small stream along Mace Rd.) Comment
  RSA298941  Cordylanthus mollis subsp. hispidus G. Thomas Robbins, D. Post, J. W. Dawson, Peter H. Raven 1954-9-3 3651 Merced Fork of San Luis Creek, 1.7 miles south of Ingomar, 4.6 miles north of Volta, along the Gustine to Volta road 27 Comment
  JEPS23257  Cordylanthus mollis subsp. mollis G. Thomas Robbins 1958-8-31 3931 Marin tidal channel along e edge of Northwestern Pacific r.r. tracks Burdell siding (about 1/2 mi e of US Hwy 101) Comment
  JEPS24327  Cordylanthus pilosus subsp. hansenii G. Thomas Robbins with Robert Ornduff and Howard Whisler 1959-10-26 4174 Tuolumne just e Italian Bar crossing (above South Fork of Stanislaus River); South Fork Stanislaus River 518 Comment
  JEPS16134  Cordylanthus rigidus subsp. rigidus G. Thomas Robbins with John Dawson and Bob Ornduff 1956-10-6 3795 Monterey 2.7 mi s and above Jamesburg (along roadside between; summit of road over Chews Ridge); Santa Lucia Range 1066 Comment
  JEPS16135  Cordylanthus rigidus subsp. rigidus G. Thomas Robbins with John Dawson and Bob Ornduff 1956-10-6 3795 Monterey 2 mi s and above Jamesburg (along roadside between Jamesburg and summit of road over Chews Ridge); Santa Lucia Range 1066 Comment
  JEPS16137  Cordylanthus rigidus subsp. rigidus G. Thomas Robbins with John Dawson and Bob Ornduff 1956-10-6 3793 Monterey on roadside between U.S. Forest Service China Camp Ground and Chews Ridge Lookout (w slopes of ridge); Santa Lucia Range, Chews Ridge 1402 Comment
  UC907672  Cordylanthus tenuis subsp. tenuis G. Thomas Robbins 1943-8-21 1365 El Dorado 3 mi e Placerville; Eddy Arboretum, Institute of Forest Genetics 822 Comment
  SBBG100088  Cordylanthus tenuis subsp. viscidus G. T. Robbins, C. L. Custer 1954-8-13 4795 Siskiyou lower part of grade over Scott Mtn, on rd from Callahan to Carrville, 1.2 mi above (and S of) jct with Gazelle Rd 1097 Comment
  JEPS5533  Coreopsis californica var. californica G. T. Robbins and Rimo Bacigalupi 1952-4-19 3436 San Bernardino along U. S. Highway No.466 (about halfway between Barstow and Kramer) 701 Comment
  JEPS25260  Corethrogyne filaginifolia G. Thomas Robbins with John Weiler 1959-8-8 4146 San Luis Obispo about 1 1/2 mi se Oso Flaco Lake 15 Comment
  OBI16670  Corethrogyne filaginifolia G. Thomas Robbins, S. Galen Smith 1958-7-8 3891 Marin Along Bear Valley Rd, 1-3/4 mi NW of Olema Comment
  SBBG60529  Corethrogyne filaginifolia R. C. and J. R. Robbins 1920-10-21 Santa Barbara Hot Springs Ave; Santa Barbara Comment
  JEPS25257  Corethrogyne filaginifolia G. Thomas Robbins with John Weiler 1959-8-7 4142 San Luis Obispo along Paso Robles Street (Oceano); Oceano 15 Comment
  POM197063  Cornus nuttallii L. F. Robbins 1927-5-13 s.n. El Dorado 14 miles above Placerville. Comment
  UC747239  Cornus nuttallii G. Thomas Robbins 1943-4-24 1027 El Dorado ca. 3 mi. e. Camino 975 Comment
  CAS-BOT-BC212137  Cornus sericea G. Thomas Robbins 1944-6-11 1679 El Dorado Shore of South fork American River at Riverton 975 Comment
  UC747225  Cornus sericea subsp. sericea G. Thomas Robbins 1944-7-28 1765 El Dorado ca. 1/2 mi. s. Wright's Lake (N. Fork of S. Fork Silver Creek); N. Fork of S. Fork Silver Creek 2133 Comment
  UC747223  Cornus sessilis G. Thomas Robbins 1943-3-28 974 El Dorado along Mace Rd. ca. 5 mi. n.e. Camino 914 Comment
  GH385585  Cornus stolonifera G. T. Robbins 1944-6-11 1679 Unknown shore of South Fork American River at Riverton 975 Comment
  UC766627  Crassula aquatica G. Thomas Robbins with J. T. Howell 1945-5-9 1882 Marin 1/2 mi. n. Hamilton Field Air Base Comment
  CAS-BOT-BC376538  Crepis monticola G. Thomas Robbins; L. R. Heckard 1956-7-25 3719 Unknown On summit of Snow Mt. West, Lake - Colusa County boundary 2145 Comment
  JEPS7989  Crepis nana G. Thomas Robbins 1954-7-30 3643 Tulare along John Muir Trail (near its junction with the trail to the summit of Mt. Whitney); Sequoia National Park 3962 Comment
  JEPS15568  Crepis pleurocarpa G. Thomas Robbins with L. R. Heckard 1956-7-25 3713 Colusa slope above Dark Hollow Creek (a tributary of Middle Fork Stony Creek) (on s flank of mt., at lower edge of cirque between Snow Mt. West and Snow Mt. East); Snow Mt. East 1981 Comment
  CAS-BOT-BC290916  Crepis vesicaria G. Thomas Robbins 1958-4-23 3820 Alameda On south side of Clarewood Drive, about .25 mile above its junction with Broadway Terrace, Oakland 106 Comment
  RSA152191  Crepis vesicaria G. Thomas Robbins 1958-4-23 3820 Alameda Hillslope (N facing) on S side of Clarewood Drive, .25 mile above its jct with Broadway Terrace, Oakelank 107 Comment
  JEPS21990  Crepis vesicaria subsp. taraxacifolia G. Thomas Robbins 1958-4-23 3820 Alameda hillslope (n-facing) on s side Clarewood Drive (about 0.25 mi above junction with Broadway Terrace); Oakland 106 Comment
  OBI16622  Crepis vesicaria subsp. taraxacifolia G. Thomas Robbins 1958-4-23 3820 Alameda S side of Clarewood Dr, about .25 mi above its jctn with Broadway Terr, Oakland 107 Comment
  UCD130986  Crepis vesicaria subsp. taraxacifolia G. Thomas Robbins 1958-4-23 3820 Alameda south side of Clarewood Drive, about 0.25 mile above its junction with Broadway Terrace, Oakland. 106 Comment
  UCD126224  Cressa truxillensis Robbins; Norton 1928-8-1 1418 Yolo near Clarksburg. Comment
  UCD126225  Cressa truxillensis G. Thomas Robbins 1958-9-1 3936 Alameda Oakport Road (which parallels the Eastshore Freeway on the south), just north of East Creek Slough at the northeast edge of San Leandro Bay. Comment
  UC1084501  Croton californicus G. Thomas Robbins 1940-5-19 322 Contra Costa e Antioch (sand hills bordering river); San Joaquin River Comment
  UC964814  Croton californicus G. Thomas Robbins 1950-4-6 3317 Inyo Mosaic Canyon Death Valley National Monument, Panamint Mountains (streambed) Comment
  JEPS25271  Crypsis schoenoides G. Thomas Robbins 1959-9-6 4158 Alameda Alameda Creek; creek bed at the Valle Vista Bridge on west Alquire Road, 1.6 mi sw of Mission Blvd. (State Hwy 9) Comment
  UCD59940  Crypsis schoenoides G. Thomas Robbins 1959-9-6 4158 Alameda Fremont township, near Niles. 1.6 miles southwest of Mission Blvd. (State Hwy. 9), Alameda Creek at the Valle Vista Bridge on west Alquire Road. Comment
  UCD119054  Cryptantha ambigua Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  UC981779  Cryptantha circumscissa G. Thomas Robbins 1950-4-2 3301 Kern about 1 mi ne Isabella (above Kern River) 762 Comment
  UC981782  Cryptantha circumscissa G. Thomas Robbins 1950-4-7 3319 a Inyo about 3 mi w Lone Pine; Alabama Hills 1219 Comment
  UC1112275  Cryptantha flaccida G. Thomas Robbins 1950-4-23 3342 Santa Clara 2.5-3 mi e Coyote (foothills of Mount Hamilton Range); Mount Hamilton Range 365 Comment
  UC907689  Cryptantha intermedia G. Thomas Robbins 1945-6-23 2009 El Dorado 3 mi e Camino (slope above North Fork Webber Creek) 975 Comment
  RSA77976  Cryptantha intermedia G. Thomas Robbins 1945-6-23 2009 El Dorado North Fork Webber Creek, about 3 miles east of Camino. 976 Comment
  JEPS7965  Cryptantha nubigena G. Thomas Robbins and Peter H. Raven 1954-7-28 3641 Tulare upper reaches of Crabtree Creek Sequoia National Park, Crabtree Creek 3657 Comment
  UC993779  Cryptantha pterocarya G. Thomas Robbins 1950-4-2 3306 a Kern near and s of Freeman Junction (along U.S. Highway 6, w Mojave Desert); Mohave Desert Comment
  UC747563  Cryptantha simulans G. Thomas Robbins 1943-6-17 1184 El Dorado about 3 mi e Camino (along U.S. Highway 50) 1036 Comment
  UC907714  Cryptantha simulans G. Thomas Robbins 1944-6-3 1645 El Dorado 3 mi e Camino (at C.C.C. Camp Snowline) 1036 Comment
  UC964822  Cryptogramma acrostichoides G. Thomas Robbins 1943-7-25 1293 El Dorado small lake on slopes e and above Medley Lakes (Reservoir); Desolation Valley Wilderness Area 2590 Comment
  UC964852  Cryptogramma acrostichoides G. Thomas Robbins 1943-6-27 1219 El Dorado ridge above Echo Summit Pass (3/4 mi sw of US Hwy 50) 2438 Comment
  UCD126364  Cuscuta pacifica var. pacifica G. Thomas Robbins 1959-9-13 4163 Contra Costa northeastern edge of San Pablo Bay, just east of Hercules. Comment
  JEPS25274  Cuscuta salina var. major G. Thomas Robbins 1959-9-13 4161 Contra Costa n edge Pinole; San Pablo Bay Comment
  JEPS25276  Cuscuta salina var. major G. Thomas Robbins 1959-9-13 4163 Contra Costa just e Hercules (ne edge of San Pablo Bay); San Pablo Bay Comment
  JEPS25265  Cyclospermum leptophyllum G. Thomas Robbins 1959-8-30 4152 Alameda at corner of Excelsior Ct. & MacArthur Blvd. (just e. of intersection of Lakeshore Ave.) Oakland Comment
  OBI9022  Cyclospermum leptophyllum G. Thomas Robbins 1959-8-30 4152 Alameda At corner of Excelsior Ct and MacArthur Blvd (just E of intersection of Lakeshore Ave) Oakland 8 Comment
  RSA152179  Cyclospermum leptophyllum G. Thomas Robbins 1959-8-30 4152 Alameda Vacant lot at corner of Excelsior Ct. and MacArther Blvd. (just east of intersection of Lakeshore Ave.) 8 Comment
  SEINET195647  Cynoglossum grande G. T. Robbins 1943-3-19 964 El Dorado Near Institute of Forest Genetics 3 mi E of Placerville 762 Comment
  SEINET202643  Cynoglossum occidentale G. T. Robbins, R Bacigalupi 1955-6-7 5266 Lake Timberline Camp at jct of Boardman Ridge and Hull Mtn 1737 Comment
  RSA32309  Cynosurus echinatus G. Thomas Robbins 1945-6-5 1969 El Dorado NE and above Smithflat. 701 Comment
  UCD54037  Cyperus eragrostis W. W. Robbins 1931-8-2 2227 Sutter in Sacramento Valley. Comment
  JEPS15543  Cyperus squarrosus G. Thomas Robbins with L. R. Heckard 1956-7-25 3701 Lake e. base of ridge that forms a s.e. extension of Snow Mt. West (ca. 1/2 mi. airline from summit, pond drains w. through gap in ridge, into headwaters of Bear Creek ...); Lake-Colusa Co. Boundary 1981 Comment
  UC747648  Cystopteris fragilis G. Thomas Robbins 1944-6-7 1658 El Dorado ca. 3 mi e Camino (along N Fork Webber Creek) 914 Comment
  UC964820  Cystopteris fragilis G. Thomas Robbins 1944-6-7 1658 El Dorado ca. 3 mi e Camino (along N Fork Webber Creek) 914 Comment
  UC964859  Cystopteris fragilis G. Thomas Robbins 1945-6-9 1975 El Dorado ca. 3 mi e Camino (above N Fork Webber Creek) 975 Comment
  UCD105698  Dalea mollissima W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  RSA353641  Damasonium californicum L. F. Robbins 1928-5-18 s.n. Yolo The Causeway. Comment
  UC907663  Danthonia californica G. Thomas Robbins with J. T. Howell 1945-5-9 1893 Marin 1/2 mi n Hamilton Field Air Base Comment
  UCD60521  Danthonia californica G. Thomas Robbins 1958-5-10 3828 Alameda Along Redwood Road, about 1/2 mile E and above its junction with Mountain Boulevard, Oakland hills. 167 Comment
  UC907650  Danthonia californica var. americana G. Thomas Robbins with J. T. Howell 1945-5-9 1900 Marin along US Hwy 101 near Hamilton Field Air Base Comment
  UC907651  Danthonia californica var. americana G. Thomas Robbins 1945-6-16 1978 El Dorado 3 mi e Placerville (in pine plantation); Institute of Forest Genetics 822 Comment
  UC747344  Darmera peltata G. Thomas Robbins 1943-5-23 1085 El Dorado North Fork Webber Creek, 3 mi E of Camino. 914 Comment
  UC747355  Darmera peltata G. Thomas Robbins 1943-4-10 983 El Dorado 3 mi e Camino (in at edge of North Fork Webber Creek); North Fork Webber Creek 944 Comment
  UCD61081  Dasyochloa pulchella W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD126535  Datura stramonium W. W. Robbins 1932-6-27 s.n. Yolo University Farm, Davis. Comment
  SBBG84098  Datura wrightii R. C. and J. R. Robbins 1921-5-17 Santa Barbara Carpinteria Comment
  SD165116  Datura wrightii Jolynn Robbins, Joe Barth 2004-8-2 30 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  JEPS25255  Deinandra increscens subsp. increscens G. Thomas Robbins with John Weiler 1959-8-7 4139 San Luis Obispo 1.8 mi n Arroyo de la Cruz (w of State Highway 1, 5.6 mi s of Monterey County line) 15 Comment
Read comments
Sep 10 2011
  JEPS7954  Deinandra kelloggii G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3538 Tulare about 0.25 mi e Milo junction (on road to Balch Park, 7.5 mi n of Springville) Comment
  CAS-BOT-BC299988  Deinandra kelloggii G. Thomas Robbins; Lawrence R. Heckard 1953-5-30 3538 Tulare On road to Balch Park about one-fourth mile east of Milo junction and 7.5 miles north of Springville 609 Comment
  JEPS24453  Delairea odorata G. Thomas Robbins 1960-2-2 4180 Alameda on banks Sausal Creek (near El Centro Ave., crossing over Dimond Canyon, Dimond Park, Oakland); Oakland, Dimond Park, Dimond Canyon, banks Sausal Creek 68 Comment
  UC747448  Delphinium glaucum G. Thomas Robbins 1943-9-5 1390 El Dorado meadow along Tahoe-Yosemite trail n and below Dicks Pass (near Dicks Peak) 2743 Comment
  RSA32371  Delphinium glaucum G. Thomas Robbins 1943-9-5 1390 El Dorado Del Dorado County: below Dicks Pass, near Dicks Peak, along Tahoe Yosemite trail. alt 9000ft 2744 Comment
  UC747434  Delphinium gracilentum G. Thomas Robbins 1945-6-23 2006 El Dorado canyon slope above North Fork Webber Creek (about 3 mi e of Camino) 975 Comment
  JEPS5062  Delphinium gypsophilum subsp. gypsophilum G. T. Robbins and R. Bacigalupi 1952-4-20 3444 Kern Rolling hills, 3.3 miles SW of Taft, along US No. 399 Comment
  UC747415  Delphinium hansenii subsp. hansenii G. Thomas Robbins 1943-6-8 1140 El Dorado western edge of Institute of Forest Genetics, 3 mi E of Placerville 731 Comment
  UC747444  Delphinium nudicaule G. Thomas Robbins 1944-4-14 1522 Marin n slope of ridge about 3 mi w Hamilton Field Air Base; Big Rock Ridge 60 Comment
  UC747412  Delphinium nuttallianum G. Thomas Robbins 1945-7-1 2034 El Dorado rock slopes along Twin Lakes trail ca 3/4 mi ne Wrights Lake (9 mi n of US Hwy 50) 2194 Comment
  RSA32370  Delphinium nuttallianum G. Thomas Robbins 1943-7-25 1314 El Dorado Shady Lodgepole pine woods N of Upper Echo Lake, along Desolation Valley Trail. 2287 Comment
  UC747417  Delphinium nuttallianum G. Thomas Robbins 1943-7-25 1314 El Dorado North of Upper Echo Lake, along Desolation Valley Trail 2286 Comment
  RSA32303  Delphinium patens G. Thomas Robbins 1944-4-23 1566 El Dorado Live oak woodland along Chute Camp Road near Iowa Creek, 1/2 mile S of S Fork American River Comment
  RSA32305  Delphinium patens G. Thomas Robbins 1945-7-1 2034 El Dorado Along Twin Lakes trail 3/4 miles NE of Wrights Lake, 9 mile N of Hwy 50, alt 7200ft. El Dorado County 2195 Comment
  UC747421  Delphinium patens G. Thomas Robbins 1944-5-12 1595 El Dorado wooded hillside w Institute of Forest Genetics (about 3 mi e of Placerville) 762 Comment
  UC964798  Delphinium purpusii G. Thomas Robbins 1950-4-9 3331 Kern on canyon slope above Kern River (about 2 mi n and e of Bodfish) 762 Comment
  JEPS5060  Delphinium recurvatum G. T. Robbins and R. Bacigalupi 1952-4-16 3420 Kern Tupman; w edge of town Comment
  JEPS5064  Delphinium recurvatum G. T. Robbins and Rimo Bacigalupi 1952-4-19 3440 Kern along US Hwy 466 10 mi w Kramer Comment
  UC907669  Delphinium variegatum G. Thomas Robbins 1944-5-21 1621 El Dorado canyon slope above North Fork Webber Creek (about 2 mi e of Camino) 975 Comment
  RSA400064  Delphinium variegatum L. F. Robbins 1928-4-20 s.n. Sacramento Near Fair Oaks Comment
  UC907685  Delphinium variegatum subsp. variegatum G. Thomas Robbins 1945-5-27 1954 El Dorado low places in field about 1 mi s Pleasant Valley 762 Comment
  SBBG77909  Dendromecon harfordii R. C. and J. R. Robbins 1922-3-28 Santa Barbara Santa Cruz Island Comment
  UC747395  Dendromecon rigida G. Thomas Robbins 1943-6-20 1198 El Dorado along road to powerhouse 4-5 mi nw Pollock Pines (n-facing wall of canyon); canyon of South Fork American River 914 Comment
  JEPS25162  Deschampsia danthonioides G. Thomas Robbins 1959-5-27 4034 Alameda w. shore of Lake Temescal (reservoir); Oakland 137 Comment
  UCD63578  Deschampsia elongata G. Thomas Robbins 1959-5-27 4034 Alameda Along the west shore of Lake Temescal (reservoir), Oakland. 137 Comment
  UCD114793  Descurainia sophia Robbins; Raynor 1943-6-1 s.n. Modoc near Likely. Comment
  UC747399  Dicentra formosa G. Thomas Robbins 1943-4-25 1031 El Dorado ca 3 mi e Camino (along bank of North Fork of Webber Creek); North Fork of Webber Creek 914 Comment
  UCSB784  Dichelostemma capitatum Robbins, G. 1937-4-4 Alameda Berkeley Hills east of University of California Campus Comment
  SBBG57584  Dichelostemma capitatum subsp. pauciflorum J. R. Robbins 1934-3-25 Unknown N E Mojave Desert Comment
  SBBG60672  Dieteria canescens J. R. and R. C. Robbins 1932-7-17 Tuolumne Tioga Pass Rd 2438 Comment
  SEINET195144 Image available Diplacus angustatus G. Thomas Robbins 1945-1 2003 El Dorado Sly Park meadow 975 Comment
  CAS-BOT-BC153766  Diplacus angustatus G. Thomas Robbins 1945-6-17 2003 El Dorado Sly Park Meadow 975 Comment
  SEINET13769177 Image available Diplacus aurantiacus G. Thomas Robbins 1945-1 1936 El Dorado Above Sweetwater Creek, 3-4 miles south of Salmon FAlls 183 Comment
  CAS-BOT-BC152248  Diplacus bolanderi G. Thomas Robbins; Lawrence R. Heckard 1953-5-30 3544 Tulare Along road to Balch Park, about one-fourth mile east of Milo junction and 7.5 miles north of Springville 548 Comment
  CAS-BOT-BC152249  Diplacus bolanderi G. Thomas Robbins; Lawrence R. Heckard 1953-5-30 3544 Tulare Along road to Balch Park, about one-fourth mile east of Milo junction and 7.5 miles north of Springville 548 Comment
  CAS-BOT-BC153232  Diplacus kelloggii G. Thomas Robbins 1945-4-13 1839 El Dorado Above Smith Flat, 2 1/2 mi. e. of Placerville 762 Comment
  SBBG66709  Diplacus leptaleus J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  CAS-BOT-BC153667  Diplacus mephiticus G. Thomas Robbins 1944-6-18 1732 El Dorado Along Capps Crossing Road 1/2 mi. n. of Capps Crossing 1524 Comment
  CAS-BOT-BC153929  Diplacus pulchellus G. Thomas Robbins 1953-5-7 3517 Calaveras About 4 miles east of Murphys along Ebbetts Pass road 975 Comment
  CAS-BOT-BC151615  Diplacus torreyi G. Thomas Robbins 1943-5-5 1071 El Dorado Hillside above Smith Flat, 2 1/2 mi. e. of Placerville 762 Comment
  CAS-BOT-BC151616  Diplacus torreyi G. Thomas Robbins 1943-7-6 1249 El Dorado C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  SEINET195640  Diplacus torreyi G. Thomas Robbins 1945-1 2060 El Dorado Along St Hwy 89 near Fallen Leaf Lake 1920 Comment
  SEINET195148  Diplacus viscidus G. Thomas Robbins 1945-1 2014 El Dorado Along Deer Valley Rd, 1 mi N of Rescue 396 Comment
  CAS-BOT-BC151078  Diplacus viscidus G. Thomas Robbins 1945-6-30 2014 El Dorado Along Deer Valley Road, 1 mi. n. of Rescue 396 Comment
  CAS-BOT-BC151391  Diplacus viscidus G. Thomas Robbins; Peter H. Raven 1956-4-28 3674 El Dorado On a one-year-old chaparral burn along Placerville-Georgetown Road, 2.4 miles south of Kelsey and 1.5 miles north and on grade above South Fork American River 457 Comment
  UCD114730  Dithyrea californica W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC747624  Dodecatheon alpinum G. Thomas Robbins 1943-6-27 1229 El Dorado along U.S. Highway 50 just e Echo Summit Pass; e of Echo Summit Pass 2225 Comment
  UCD118959  Dodecatheon hendersonii W. W. Robbins 1928-4-29 937 Sacramento American River. Comment
  RSA114101  Dodecatheon hendersonii G. Thomas Robbins 1945-4-22 1866 El Dorado Loose,loamy soil in shade of brush on wooded hillside (mostly Ponderosa pines and Black oaks) 1 to 2 mi. west of Placerville near Hangtown. 579 Comment
  JEPS19382  Downingia concolor var. concolor G. Thomas Robbins 1937-5-23 179 Sonoma near Wright School (along road between Sebastopol and Santa Rosa) Comment
  JEPS14472  Downingia cuspidata G. Thomas Robbins with Peter H. Raven 1956-4-28 3669 Sacramento about 2 mi w El Dorado County line (along U.S. Highway 50, foothills of the Sierra Nevada); Sierra Nevada 60 Comment
  UC907742  Draba oligosperma var. oligosperma G. Thomas Robbins 1945-8-12 2125 El Dorado near summit Freel Peak; near summit Freel Peak 3322 Comment
  UC700285  Draperia systyla G. Thomas Robbins 1945-6-17 1997 El Dorado Camp Creek near Baltic Peak 975 Comment
  SEINET6425015 Image available Drosera rotundifolia G. Thomas Robbins 1945-1 2100 El Dorado Long Meadow near Schlien Ranger Station 1676 Comment
  UC747404  Drosera rotundifolia G. Thomas Robbins 1945-8-6 2100 El Dorado near Schlien Ranger Station; Long Meadow 1676 Comment
  CAS-BOT-BC527360  Drymocallis glandulosa var. reflexa G. Thomas Robbins 1945-8-6 2104 El Dorado Long Meadow, near Schlien Ranger Station 1676 Comment
  SBBG72483  Drymocallis hansenii J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UC907621  Drymocallis hansenii G. Thomas Robbins 1945-8-6 2104 El Dorado near Schlien Ranger Station; Long Meadow 1676 Comment
  UC766626  Dudleya cymosa G. Thomas Robbins 1945-6-17 1984 El Dorado slope above Camp Creek (near Baltic Creek) 975 Comment
  UCD60753  Echinochloa colona Robbins; Raynor 1943-6-24 s. n. Stanislaus Patterson. Comment
  UCD137960  Echinodorus berteroi W. W. Robbins 1931-9-3 2253 Butte Biggs. Comment
  JEPS15544  Eleocharis bella G. Thomas Robbins with L. R. Heckard 1956-7-25 3702 Lake 1/2 mi(air) from summit Snow Mountain West (pond at E base of ridge that forms a SE extension of montain; pond drains W through gap in ridge, to headwaters of Bear Creek); Rice Fork of Eel River 1981 Comment
  CAS-BOT-BC113564  Eleocharis bolanderi Guy Thomas Robbins 1945-6-23 2004 El Dorado Canyon slope above North Fork Webber Creek ca. 3 mi E of Camino. 975 Comment
  POM313047  Eleocharis flavescens G. Thomas Robbins, S. Galen Smith 1949-10-23 1901 El Dorado 5 miles north of Colma on Georgetown road Comment
  JEPS25268  Eleocharis macrostachya G. Thomas Robbins 1959-8-30 4155 Alameda vacant lot at corner of Excelsior Ct. and MacArthur Blvd. (just E of intersection of Lakeshore Ave.) Oakland 7 Comment
  UC1100707  Eleocharis pachycarpa G. T. Robbins and S. Galen Smith 1949-10-23 1900 El Dorado 5 mi N of Coloma (on Georgetown road) Comment
  UC1100709  Eleocharis pachycarpa G. Thomas Robbins and S. Galen Smith 1949-10-23 1898 El Dorado 5 mi N of Coloma (on Georgetown road) Comment
  JEPS25084  Elodea canadensis G. Thomas Robbins 1958-10-11 3952 Alameda sw end San Leandro (at w end of Boxwood) Comment
  UC907631  Elymus glaucus G. Thomas Robbins 1944-6-16 1695 El Dorado 3 mi e Placerville (in pine plantation); Institute of Forest Genetics 822 Comment
  SBBG60822  Encelia actoni J. R. and R. C. Robbins 1930-3-25 San Bernardino Ibex Pass Comment
  SD185498  Encelia californica Jolynn Robbins 2006-4-9 38 San Diego Damon Lane County Park in south El Cajon. N of the intersection of Fury Ln and Wieghorst Way. 68 Comment
  SBBG60960  Encelia farinosa R. C. and J. R. Robbins 1933-2-15 Riverside foot of Palms to Pines Hwy, ca. 11 mi SW of Palm Springs Comment
  CAS-BOT-BC409898  Enemion occidentale G. Thomas Robbins 1944-3-19 1486 El Dorado South Fork American River canyon, 5-6 mi. N of Camino 762 Comment
  UCD105396  Epilobium brachycarpum G. Thomas Robbins 1958-9-1 3937 Alameda West end of Hopkins Street, Berkeley. 167 Comment
  SBBG60119  Epilobium canum subsp. canum J. R. and R. C. Robbins 1932-8-19 San Luis Obispo near Cambria Comment
  JEPS16133  Epilobium canum subsp. canum G. Thomas Robbins with John Dawson and Bob Ornduff 1956-10-6 3796 Monterey roadside above Tularcitos Creek (4 mi nw of Jamesburg, 10.9 mi e of Robles del Rio junction) 335 Comment
  CAS-BOT-BC166873  Epilobium canum subsp. latifolium G. Thomas Robbins 1943-8-15 1361 El Dorado Along roadside to Wrights Lake, 2-3 mi. n. of U.S. Highway 50 1981 Comment
  SEINET195498  Epilobium canum subsp. latifolium G. Thomas Robbins 1943-8-15 1361 El Dorado Along roadside to Wrights Lake 2-3 mi N of US Hwy. 50 1981 Comment
  UC747281  Epilobium canum subsp. latifolium G. Thomas Robbins 1943-8-15 1361 El Dorado 2-3 mi n U.S. Highway 50 (along roadside to Wrights Lake) 1981 Comment
  JEPS25076  Epilobium cleistogamum G. Thomas Robbins with S. Galen Smith 1959-1-4 3958 Solano field just n U.S. Highway 40 (about 1/2 mi e of Winters road junction, about 2 1/2 mi ne of Vacaville); Sacramento Valley 27 Comment
  UC747232  Epilobium densiflorum G. Thomas Robbins 1943-7-15 1268 El Dorado canyon slope above North Fork Webber Creek (about 3 mi e of Camino) 975 Comment
  UC747235  Epilobium densiflorum G. Thomas Robbins 1944-7-6 1750 El Dorado 5 mi s Pollock Pines; Sly Park 1005 Comment
  UC747274  Epilobium densiflorum G. Thomas Robbins 1944-8-15 1828 El Dorado along US Hwy 50 3 mi e Placerville (bed of small stream from spring) 670 Comment
  UC747280  Epilobium densiflorum G. Thomas Robbins 1943-6-21 1206 El Dorado slope w Institute of Forest Genetics (3 mi e of Placerville) 731 Comment
  UCD106301  Epilobium densiflorum W. W. Robbins 1941-8-8 s.n. Mendocino Round Valley. Comment
  UC747270  Epilobium foliosum G. Thomas Robbins 1945-6-17 1988 El Dorado slope above Camp Creek (near Baltic Peak) 975 Comment
  SEINET195658  Epilobium foliosum G. Thomas Robbins 1945-6-17 1988 El Dorado Rocky slope above Camp Creek near Baltic Peak 975 Comment
  UC964832  Epipactis gigantea G. Thomas Robbins 1950-5-14 3355 Monterey along State Hwy 1 between Lucia and Big Sur (about 5 mi s of Hunter Light) 152 Comment
  UC747642  Equisetum hyemale subsp. affine G. Thomas Robbins 1944-6-17 1698 El Dorado ca. 1 mi e Pyramid Ranger Station 1676 Comment
  UCD135440  Equisetum hyemale subsp. affine W. W. Robbins 1928-4-29 943 Unknown American River. Comment
  UC1084510  Equisetum laevigatum G. Thomas Robbins 1937-6-18 249 Sonoma along R.R. right-of-way Santa Rosa Comment
  UCD62959  Eragrostis cilianensis W. W. Robbins 1943-8-1 Yolo Lowe Ranch north of Woodland. Comment
  UCD63822  Eragrostis mexicana subsp. virescens W. W. Robbins; Gramineae 1943-8-1 s.n. Yolo Lowe Ranch N. of Woodland. Comment
  RSA152174  Eremalche parryi G. Thomas Robbins, R. C. Bacigalupi 1952-4-20 3445 Kern Slopes of Hills in watershed of Bitterwater Creek on road to Elkhorn Plain, 1.3 miles west of junction with U.S. Highway 399 427 Comment
  JEPS7480  Eremalche parryi subsp. kernensis G. Thomas Robbins and Rimo Bacigalupi 1952-4-20 3459 San Luis Obispo s. most end of Carrizo Plain (just before descent into Cuyama Valley, ca. 4 mi. from Kern Co. line) 868 Comment
  UC747310  Eremocarpus setiger G. Thomas Robbins 1943-7-15 1266 El Dorado flat above North Fork Webber Creek (about 3 mi e of Camino) 975 Comment
  CAS-BOT-BC174110  Eremogone aculeata G. Thomas Robbins 1944-7-28 1776 El Dorado Along Willow Flat Trail, 3 mi. NE of Wrights Lake 2286 Comment
  A387260  Ericameria arborescens G. T. Robbins 1943-10-16 1399 Unknown Institute of Forest Genetics, 3 mi. e. of Placerville 792 Comment
  UC747191  Ericameria arborescens G. Thomas Robbins 1943-10-16 1399 El Dorado 3 mi e Placerville; Institute of Forest Genetics 792 Comment
  GH387293  Ericameria bloomeri G. T. Robbins 1945-8-12 2145 Unknown along road to High Meadow, 6-8 mi. SE of Lake Tahoe 2133 Comment
  SEINET195495  Ericameria bloomeri G. Thomas Robbins 1945-10-7 2153 Lassen Lassen National Forest ; Southeast slope of Harvey Mountain 2-3 miles northeast of Burgess Spring Harvey Valley 1829 Comment
  SEINET195638  Ericameria bloomeri G. Thomas Robbins 1945-8-12 2145 El Dorado Along road to High Meadow 6-8 miles southeast of Lake Tahoe 2134 Comment
  UC907725  Ericameria bloomeri G. Thomas Robbins 1945-8-12 2145 El Dorado 6 to 8 mi se Lake Tahoe (along the road the High Meadow) 2133 Comment
  UC747138  Ericameria discoidea G. Thomas Robbins 1943-9-5 1378 El Dorado Summit of Mt. Tallac 2956 Comment
  JEPS16381  Ericameria ericoides G. Thomas Robbins 1956-12-30 3800 Monterey near Marina; Monterey Bay, Marina Beach Comment
  UC747160  Erigeron breweri var. breweri G. Thomas Robbins 1943-7-25 1327 El Dorado alongside road ca. 0.5 mi s of Echo Lake 2194 Comment
  SD185487  Erigeron canadensis Jolynn Robbins 2006-9-4 60 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  CAS-BOT-BC294981  Erigeron compositus G. Thomas Robbins 1944-7-28 1790 El Dorado At summit of Rockbound Pass, Desolation Valley Wilderness Area 2621 Comment
  UC747213  Erigeron compositus G. Thomas Robbins 1944-7-28 1790 El Dorado at the summit Rockbound Pass; Desolation Valley Wilderness Area, Rockbound Pass 2621 Comment
  UC907757  Erigeron foliosus var. hartwegii G. Thomas Robbins 1945-5-20 1937 El Dorado 2-3 mi s Salmon Falls; Sweetwater Creek 182 Comment
  SBBG63281  Erigeron glacialis var. glacialis J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UC747189  Erigeron glacialis var. glacialis G. Thomas Robbins 1944-7-29 1800 El Dorado on ridge s of and above Lake Schmidell; Desolation Valley Wilderness Area 2590 Comment
  UC747205  Erigeron glacialis var. glacialis G. Thomas Robbins 1943-7-25 1305 El Dorado along the Desolation Valley Trail ca 2 mi nw Echo Lake (edge of meadow); Haypress Meadow 2438 Comment
  SBBG63280  Erigeron glacialis var. hirsutus J. R. and R. C. Robbins 1932-7-17 Mono Tioga Pass Comment
  CAS-BOT-BC295139  Erigeron inornatus G. Thomas Robbins 1943-6-29 1239 El Dorado Slope of North Fork Webber Creek Canyon, ca. 3 mi. e. of Camino 914 Comment
  SBBG63287  Erigeron philadelphicus J. R. and R. C. Robbins 1932-7-18 El Dorado W shore, Lake Tahoe Comment
  UC907759  Erigeron philadelphicus var. philadelphicus G. Thomas Robbins 1945-5-20 1922 El Dorado 3 mi e Rescue (Placerville-Rescue road); Dry Creek 457 Comment
  UCD132042  Erigeron philadelphicus var. philadelphicus Robbins; Raynor 1943-6-1 s.n. Plumas Belden. Comment
  UC907770  Erigeron pygmaeus G. Thomas Robbins 1945-8-12 2120 El Dorado near summit Freel Peak 3322 Comment
  CAS-BOT-BC224232  Eriodictyon californicum G. Thomas Robbins 1943-5-5 1070 El Dorado At western edge of Institute of Forest Genetics, 3 mi. e. of Placerville 762 Comment
  UC747589  Eriodictyon californicum G. Thomas Robbins 1943-5-5 1070 El Dorado at western edge Institute of Forest Genetics (3 mi e of Placerville); western edge of Institute of Forest Genetics 762 Comment
  UCD100056  Eriogonum fasciculatum var. polifolium W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD100275  Eriogonum inflatum W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC746886  Eriogonum lobbii var. lobbii G. Thomas Robbins 1945-8-12 2118 El Dorado w flank of Jobs Sister Peak Jobs Sister Peak 3048 Comment
  CAS-BOT-BC270985  Eriogonum nervulosum G. Thomas Robbins; L. R. Heckard 1956-7-25 3723 Lake Southern extension of Snow Mt. West and about one-fourth mile south of its summit 2103 Comment
  JEPS15558  Eriogonum nervulosum G. Thomas Robbins with L. R. Heckard 1956-7-25 3723 Colusa 1/4 mi s summit Snow Mt. West (ridge forming s extension of Snow Mt. West); Snow Mt. West, Lake-Colusa County Boundary 2103 Comment
  RSA32311  Eriogonum nudum var. deductum G. Thomas Robbins 1945-8-5 2091 El Dorado Above north shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area. 2012 Comment
  UCD100553  Eriogonum nudum var. oblongifolium Robbins; Raynor 1943-6-1 s.n. Plumas Near Quincy. Comment
  UC907668  Eriogonum ovalifolium var. nivale G. Thomas Robbins 1945-8-12 2128 El Dorado near summit of Freel Peak; Freel Peak 3322 Comment
  JEPS97128  Eriogonum parvifolium R. C. and J. R. Robbins 1932-8-29 San Luis Obispo roadside between Cayucas and Cambria Comment
  UC746876  Eriogonum roseum G. Thomas Robbins 1944-9-24 1831 El Dorado ca. 3 mi e Camino (on canyon side above North Fork Webber Creek); North Fork Webber Creek 975 Comment
  UC746890  Eriogonum spergulinum var. reddingianum G. Thomas Robbins 1945-7-8 2043 El Dorado near Al Tahoe; Lake Tahoe 1920 Comment
  RSA32353  Eriogonum spergulinum var. reddingianum G. Thomas Robbins 1945-7-8 2043 El Dorado Near Al Tahoe, Lake Tahoe. 1921 Comment
  RSA32381  Eriogonum umbellatum var. nevadense G. Thomas Robbins 1945-7-8 2046 El Dorado Near Al Tahoe, Lake Tahoe. 1921 Comment
  UC746875  Eriogonum umbellatum var. nevadense G. Thomas Robbins 1945-7-8 2046 El Dorado near Al Tahoe; Lake Tahoe 1920 Comment
  JEPS15696  Eriogonum wrightii var. subscaposum G. Thomas Robbins 1956-9-9 3761 Alpine 1/2 to 3/4 mi due w, above State Highway 88, lower slopes of Red Lake Peak Carson Pass; Red Lake Peak 2651 Comment
  RSA32379  Eriogonum wrightii var. subscaposum G. Thomas Robbins 1945-8-12 2143 El Dorado Forming caespitose cushions. Jeffrey Pine White Fir woods along roas to Hight Meadow, 6-8 mi. SE. of Lake Tahoe. 2134 Comment
  UC746892  Eriogonum wrightii var. subscaposum G. Thomas Robbins 1945-8-12 2143 El Dorado 6-8 mi se Lake Tahoe (along road to High Meadow) 2133 Comment
  UC972350  Eriophorum crinigerum G. Thomas Robbins 1951-7-26 3394 Fresno meadow at edge of Laurel Creek (w. of Second Recess and Mono Creek); Laurel Creek basin 3108 Comment
  JEPS19377  Eriophyllum lanatum var. arachnoideum G. Thomas Robbins 1937-6-6 235 Sonoma along roadside near Bodega Bay Comment
  UC747194  Eriophyllum lanatum var. croceum G. Thomas Robbins 1943-6-17 1186 El Dorado 3 mi e Camino (along U.S. Highway 50) 1036 Comment
  JEPS19402  Eriophyllum staechadifolium G. Thomas Robbins 1937-4-17 124 Contra Costa cliffs above San Francisco Bay near Point Richmond Comment
  SBBG65685  Eriophyllum wallacei J. R. and R. C. Robbins 1930-3-29 Los Angeles Antelope Valley Comment
  SD45403  Eriophyllum wallacei G. Thomas Robbins 1950-4-7 3327 Inyo 0.5 miles north and east of Little Lake. 915 Comment
  UC747297  Erodium cicutarium G. Thomas Robbins 1944-5-21 1624 El Dorado 2 mi e Camino (along U.S. Highway 50) 975 Comment
  UCSB3536  Erodium cicutarium Robbins, G. 1937-4-4 Alameda Berkley Hills Comment
  UCD81556  Eryngium vaseyi W. W. Robbins; W. D. Norton 1927-10-1 s.n. Yolo West of Davis. Comment
  CAS-BOT-BC41533  Erysimum capitatum G. Thomas Robbins 1943-6-4 1116 El Dorado On slope above Silver Fork American River near Sacramento Box Company sawmill. (China Flat) 3-4 miles south of Kyburz. 1371 Comment
  RSA32364  Erysimum capitatum G. Thomas Robbins 1945-7-8 2038 El Dorado Near Al Tahoe, Lake Tahoe. 1921 Comment
  UC1084387  Erysimum franciscanum G. Thomas Robbins 1937-4-11 93 San Mateo meadow near Spring Valley Lakes (along road to Woodside) Comment
  SEINET195477 Image available Erythranthe lewisii G. Thomas Robbins 1943-1 1325 El Dorado Above south shore of Echo Lake. 2195 Comment
  UCD139645  Erythronium multiscapideum W. W. Robbins 1926-4-17 541 Lassen Grass Valley. Comment
  UC747396  Eschscholzia caespitosa G. Thomas Robbins 1945-6-9 1977 El Dorado about 3 mi e Camino (canyon slope above creek); North Fork Webber Creek 975 Comment
  CAS-BOT-BC402667  Eschscholzia caespitosa G. Thomas Robbins 1945-6-9 1977 El Dorado On canyon slope above North Fork Webber Creek, about 3 mi. e. of Camino 975 Comment
  RSA32297  Eschscholzia caespitosa subsp. caespitosa G. Thomas Robbins 1944-4-23 1559 El Dorado Along Chute Camp Road above Iowa Creek, ca. 4 miles NW of Camino 762 Comment
  UC747392  Eschscholzia californica G. Thomas Robbins 1944-5-21 1625 El Dorado about 2 mi e Camino (fruit orchard along U.S. Hwy 50) 975 Comment
  SBBG70136  Eschscholzia californica J. R. and R. C. Robbins 1930-3-28 Kern Kern Valley Comment
  GH381498  Eschscholzia hypecoides G. T. Robbins 1945-6-9 1977 Unknown North Fork Webber Creek, about 3 miles east of Camino 975 Comment
  UC747397  Eschscholzia lobbii G. Thomas Robbins 1945-4-22 1853 El Dorado about 2 1/2 mi e Shingle Springs 457 Comment
  POM183203  Eschscholzia lobbii L. F. Robbins 1927-3-10 s.n. Sacramento Del Paso Comment
  SD45201  Eschscholzia minutiflora G. Thomas Robbins 1950-4-7 3329 Inyo Sandy wash about 0.5 mile north and east of Little Lake. 914 Comment
  UC747177  Eucephalus breweri G. Thomas Robbins 1943-8-15 1352 El Dorado 2 mi ne, along trail to Grouse Lake Wright's Lake 2438 Comment
  SBBG34706  Eucnide urens J. R. and R. C. Robbins 1930-3-25 San Bernardino Mojave Desert Comment
  UCD142382  Euphorbia crenulata Robbins; Raynor 1943-6-1 s.n. Plumas Belden, Feather River Canyon. Comment
  UCD142348  Euphorbia eriantha W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  JEPS7766  Euphorbia incisa G. Thomas Robbins 1952-4-29 3476 San Bernardino slope between Mitchell Ranch (Mitchell's Caverns) (Providence Mountains, e Mohave Desert); Mohave Desert, Providence Mountains Comment
  UCD142565  Euphorbia melanadenia W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SD165223  Euphorbia polycarpa Jolynn Robbins 2004-7-5 20 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  UCD142730  Euphorbia polycarpa W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD142858  Euphorbia setiloba W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC747307  Euphorbia spathulata G. Thomas Robbins 1944-5-22 1630 El Dorado 2-3 mi e Placerville (along U.S. Hwy 50) 609 Comment
  UC907788  Eurybia integrifolia G. Thomas Robbins 1945-8-4 2078 El Dorado near Onion Flat; Desolation Valley Wilderness Area, Rockbound Valley 2133 Comment
  OBI15449  Euthamia occidentalis G. Thomas Robbins 1958-9-1 3935 Alameda Along and near the mouth of Cordonices Crk, Albany-Berkeley city boundary Comment
  UCD107164  Fagonia laevis W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SD165322  Foeniculum vulgare Jolynn Robbins 2004-7-5 23 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  UC747004  Fragaria vesca G. Thomas Robbins 1944-5-16 1609 El Dorado about 3 mi e Camino (along bank of North Fork Webber Creek); North Fork Webber Creek 914 Comment
  UCSB2788  Fragaria vesca Robbins, G. 1937-4-25 Alameda Hillside just easat of Claremont Ave, Berkeley Comment
  SBBG72484  Fragaria virginiana J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UCD112555  Frangula californica Robbins; Raynor 1943-6-1 s.n. Plumas near Belden, Feather River Canyon. Comment
  A378161  Frangula rubra subsp. obtusissima G. T. Robbins 1945-8-5 2082 Unknown along north shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area 2011 Comment
  JEPS21975  Frankenia salina G. Thomas Robbins 1958-5-25 3838 Alameda about 1/2 mi e of Maitland Drive (just s of San Leandro Bay, Bay Farm Island); Bay Farm Island Comment
  SBBG72753  Frankenia salina R. C. and J. R. Robbins 1920-10-31 Santa Barbara Carpinteria Comment
  GH401197  Fraxinus latifolia G. T. Robbins 1945-5-20 1938 Unknown Sweetwater Creek, 3-4 miles south of Salmon Falls 182 Comment
  UC747573  Fraxinus latifolia G. Thomas Robbins 1945-5-20 1938 El Dorado 3-4 mi s Salmon Falls (along Sweetwater Creek); Sweetwater Creek 182 Comment
  SEINET6694671 Image available Fraxinus oregona G. Thomas Robbins 1945-1 1938 El Dorado common tree along sweetwater Creek 3-4 miles south of Salmon Falls 183 Comment
  UC1084349  Fritillaria affinis G. Thomas Robbins 1937-3-25 4 Sonoma Bennett Valley, Sonoma Creek Sonoma Creek; Bennett Valley, Sonoma Creek Comment
  UC1057446  Fritillaria liliacea G. Thomas Robbins 1937-4-11 88 San Mateo near Spring Valley Lakes (on road to Woodside) Comment
  CAS-BOT-BC505297  Fritillaria micrantha G. Thomas Robbins 1943-4-13 991 El Dorado Western edge of Institute of Forest Genetics 792 Comment
  UCD121961  Galium G. Thomas Robbins; John Weiler 1959-5-23 4031 Contra Costa About one-half mile east of Pt. San Pablo, overlooking San Pablo Bay, Richmond. 7 Comment
  JEPS23262  Galium divaricatum G. Thomas Robbins 1959-5-23 4031 Contra Costa hillslope about one-half mi e Point San Pablo (overlooking San Pablo Bay); Richmond 7 Comment
  SD51690  Galium stellatum G. Thomas Robbins, R. Bacigalupi,L. Constance,G. Gillett,L. R. Heckard 1952-5-1 3501 Inyo Toward the base of a sunny east-facing slope (cliffside), Titus Canyon, Grapevine Mountains, Death Valley National Monument 1372 Comment
  UCD121921  Galium stellatum W. W. Robbins 1939-12-24 s.n. San Diego S.E. part of county. Comment
  JEPS7843  Galium stellatum var. eremicum G. T. Robbins with R. Bacigalupi, George Gillett, Lincoln Constance, L. R. Heckard 1952-5-1 3501 Inyo Titus Canyon Death Valley National Monument, Grapevine Mtns. (toward base of e-facing cliffside) 1371 Comment
  UC747063  Galium triflorum G. Thomas Robbins 1945-7-15 2063 El Dorado 3 mi e Camino (along US Hwy 50) 1036 Comment
  GH417038  Galium triflorum G. T. Robbins 1943-7-15 2063 Unknown along U.S. Highway 50, three miles east of Camino 1036 Comment
  JEPS14572  Gamochaeta stachydifolia G. Thomas Robbins with Peter H. Raven 1956-4-28 3676 El Dorado 2.4 mi s: on burn along Placerville-Georgetown road,1.5 mi nof and on grade above South Fork American River Kelsey 457 Comment
  CAS-BOT-BC199024  Garrya congdonii G. Thomas Robbins 1945-5-20 1927 El Dorado Above bank of Sweetwater Creek near Simpsons Ranch 182 Comment
  UC747237  Garrya congdonii G. Thomas Robbins 1945-5-20 1927 El Dorado near Simpsons Ranch (above bank of Sweetwater Creek) 182 Comment
  UC747229  Garrya elliptica G. Thomas Robbins with J. T. Howell 1944-4-13 1498 Marin about 4 mi w Hamilton Field Air Base (on Big Rock Ridge); Big Rock Ridge 396 Comment
  CAS-BOT-BC192119  Garrya fremontii G. Thomas Robbins 1944-3-19 1488 El Dorado South-facing slope of South Fork American River canyon. 5-6 mi. n. of Camino 762 Comment
  UC907630  Gastridium ventricosum G. Thomas Robbins 1945-6-1 1965 El Dorado 3 mi e Placerville (Institute of Forest Genetics, Eddy Arboretum); Institute of Forest Genetics, Eddy Arboretum 822 Comment
  UC747628  Gentiana calycosa G. Thomas Robbins 1943-9-5 1392 El Dorado wet grassy meadow n and below Dicks Pass; Tahoe-Yosemite trail 2743 Comment
  UCSB3542  Geranium dissectum Robbins, G. 1937-5-16 Alameda Berkeley Hills Comment
  UC747296  Geranium richardsonii G. Thomas Robbins 1943-7-25 1336 El Dorado near Echo Lake Road (along U.S. Highway 50) 2194 Comment
  UC747302  Geranium richardsonii G. Thomas Robbins 1944-6-17 1705 El Dorado ca 1 mi e Pyramid Ranger Station 1676 Comment
  UC747303  Geranium richardsonii G. Thomas Robbins 1945-8-6 2107 El Dorado near Schlien Ranger Station; Long Meadow 1676 Comment
  RSA0029494  Geranium richardsonii G. Thomas Robbins 1944-6-17 1705 El Dorado Ca. 1 mile E of Pyramid Ranger Station. 1677 Comment
  RSA46767  Geum macrophyllum G. Thomas Robbins 1944-6-17 1704 El Dorado Along small stream in open pine woods, 1 ile E of Pyramid Ranger Station. 1677 Comment
  RSA84906  Gilia achilleifolia G. Thomas Robbins 1950-4-23 3341 Santa Clara 2.5-3 miles NE of coyote, foothills of the Mount Hamilton range 366 Comment
  JEPS30770  Gilia achilleifolia subsp. achilleifolia G. Thomas Robbins 1937-4-17 122 Contra Costa w facing slope near Point Richmond; near Point Richmond Comment
  UC964825  Gilia achilleifolia subsp. achilleifolia G. Thomas Robbins 1950-4-23 3341 Santa Clara 2.5-3 mi ne Coyote (foothills of Mount Hamilton Range); Mount Hamilton Range 365 Comment
  JEPS7446  Gilia brecciarum subsp. neglecta G. Thomas Robbins, Rimo Bacigalupi 1952-4-15 3424 Kern about 3 mi e Walker Pass summit (slopes of Freeman Canyon); e of Walker Pass Summit, slopes Freeman Canyon 1371 Comment
  UC964829  Gilia brecciarum subsp. neglecta G. Thomas Robbins 1950-4-1 3294 A Kern about 1 mi e Isabella (above Kern River); , e of Isabella Comment
  UC964827  Gilia cana subsp. speciosa G. Thomas Robbins 1950-4-2 3309 Kern about 1 mi s Ricardo (Red Rock Canyon near The Temple); Red Rock Canyon near The Temple, s of Ricardo 762 Comment
  RSA84883  Gilia capitata subsp. abrotanifolia G. Thomas Robbins 1950-4-2 3297 Kern Above Kern River, about 1 mile northeast of Isabella. 762 Comment
  UCD117716  Gilia capitata subsp. mediomontana Robbins; Raynor 1943-6-1 s.n. Plumas Quincy. Comment
  UC747620  Gilia capitata subsp. pedemontana G. Thomas Robbins 1943-5-25 1089 El Dorado 3 mi e Placerville (Institute of Forest Genetics); e of Placerville, Institute of Forest Genetics Comment
  UC913387  Gilia capitata subsp. staminea G. Thomas Robbins 1940-5-19 323 Contra Costa hills e Antioch (bordering San Joaquin River); , e of Antioch Comment
  UCSB5023  Gilia clivorum Robbins, G. 1937-4-4 Alameda Berkeley Hills Comment
  JEPS7460  Gilia latiflora subsp. davyi G. Thomas Robbins, Rimo Bacigalupi 1952-4-19 3438 San Bernardino Desert flats 5 mi e Kramer; Mohave Desert, e of Kramer 731 Comment
  JEPS7459  Gilia latiflora subsp. latiflora G. Thomas Robbins, Rimo Bacigalupi 1952-4-19 3437 San Bernardino along U.S. Highway 466 about 1.5 mi w Barstow (Mohave Desert); Mohave Desert 640 Comment
  JEPS8026  Gilia latifolia G. Thomas Robbins with L. Constance and G. W. Gillett 1952-4-27 3470 San Bernardino s base Mt. Pisgah Crater (about 2 mi s of U.S. Highway 66, Mohave Desert); Mohave Desert, s base of Mt. Pisgah Crater Comment
  POM310918  Gilia leptantha subsp. purpusii G. Thomas Robbins 1950-4-1 3294 -A Kern Above Kern River, about 1 mile east of Isabella Comment
  JEPS7464  Gilia minor G. Thomas Robbins, Rimo Bacigalupi 1952-4-19 3442 Kern on road to Kramer five mi e Mojave (Mohave Desert); , e of Mojave on road to Kramer 792 Comment
  SD45389  Gilia ochroleuca subsp. exilis G. Thomas Robbins 1950-4-1 3294 A Kern Above Kern River, ca. 1.0 mile east of Isabella. Comment
  JEPS7767  Gilia sinuata G. Thomas Robbins 1952-4-29 3475 San Bernardino Mitchell's Caverns eastern Mohave Desert, Providence Mountains, Mitchell;s Cave (n of Mitchell Ranch, Providence Mountains, eastern Mohave Desert) Comment
  JEPS7790  Gilia sinuata G. Thomas Robbins 1952-4-29 3481 San Bernardino in bed of wash s and e of Mitchell Ranch Mitchell's Caverns (Providence Mountains, eastesrn Mohave Desert); eastern Mohave Desert, Providence Mountains Comment
  RSA84882  Gilia sinuata G. Thomas Robbins 1950-4-7 3326 Inyo Near Pictured Rocks, 0.5 mile north and east of Little Lake 915 Comment
  SD45391  Gilia sinuata G. Thomas Robbins 1950-4-7 3326 Inyo Dry wash near pictured rocks, ca. 0.5 mile north and east of Little Lake. 914 Comment
  UC964826  Gilia sinuata G. Thomas Robbins 1950-4-7 3326 Inyo about 0.5 mi n and e Little Lake; n and e of Little Lake 914 Comment
  JEPS7930  Gilia stellata G. Thomas Robbins with R. Bacigalupi, L. Constance, G. W. Gillett, and L. R. Heckard 1952-5-1 3496 Inyo Titus Canyon Death Valley National Monument, Grapevine Mountains, Titus C 1524 Comment
  RSA114107  Gilia tricolor G. Thomas Robbins 1944-4-24 1568 El Dorado SW of Institute of Forest Genetics, 3 miles east of Placerville 762 Comment
  UC747608  Gilia tricolor subsp. diffusa G. Thomas Robbins 1944-4-24 1568 El Dorado about 3 mi e Placerville (on rocky ridge sw of Institute of Forest Genetics); e of Placerville, sw of Institute of Forest Genetics 762 Comment
  CAS-BOT-BC266563  Githopsis pulchella G. Thomas Robbins 1945-5-20 1930 El Dorado Above Sweetwater Creek near Simpsons Ranch, 4-5 miles S of Salmon Falls 182 Comment
  CAS-BOT-BC266565  Githopsis pulchella G. Thomas Robbins 1944-5-21 1622 El Dorado Above N Fork Webber Creek near Eight Mile House, about 2 miles E of Camino 914 Comment
  SEINET8733897 Image available Githopsis pulchella G. Thomas Robbins 1945-1 1930 El Dorado above Sweetwater Creek near Simpsons Ranch (T. 10N., R. 8E., Sec. 13), 4-5 miles south of Salmon Falls 183 Comment
  UC747028  Githopsis pulchella subsp. pulchella G. Thomas Robbins 1943-6-5 1128 El Dorado about 3 mi e Camino (slopes above North Fork Webber Creek) 1036 Comment
  UC747030  Githopsis pulchella subsp. pulchella G. Thomas Robbins 1944-5-21 1622 El Dorado about 2 mi e Camino (near Eight Mile House, on ridge above North Fork Webber Creek) 914 Comment
  UC747047  Githopsis pulchella subsp. pulchella G. Thomas Robbins 1944-5-12 1597 El Dorado about 3 mi e Placerville (w of Institute of Forest Genetics) 762 Comment
  JEPS14541  Githopsis specularioides G. Thomas Robbins with Peter H. Raven 1956-4-29 3681 El Dorado se edge Placerville; Spanish Ravine 594 Comment
  SEINET10464601  Githopsis specularioides Robbins 1943-4-18 ROBBINS 1011 Sacramento Carmichael district, about 15 miles northeast of Sacramento Comment
  SEINET8733896 Image available Githopsis specularioides G. Thomas Robbins 1944-1 1622 El Dorado above North Fork Webber Creek near Eight Mile House, about two miles east of Camino 914 Comment
  JEPS21988  Glebionis segetum G. Thomas Robbins 1958-4-27 3822 Alameda Berkeley Aquatic Park Berkeley (above e shore) 1 Comment
  JEPS22041  Glebionis segetum G. Thomas Robbins 1958-7-4 3888 Alameda about 1/4 mi s of East Creek Slough (ne edge of San Leandro Bay); San Leandro Bay Comment
  UCD132393  Glebionis segetum G. Thomas Robbins 1958-7-4 3888 Alameda At the NE edge of San Leandro Bay, about 1/4 mile S of East Creek Slough, Oakland. Comment
  UC746952  Goodyera oblongifolia G. Thomas Robbins 1945-9-1 2147 El Dorado about 2 mi e of Camino 975 Comment
  UC747058  Gratiola ebracteata G. Thomas Robbins 1945-5-27 1961 El Dorado about 1/2 mi n Pleasant Valley; n of Pleasant Valley 762 Comment
  UC747065  Gratiola ebracteata G. Thomas Robbins 1944-6-18 1720 El Dorado 5 mi s Pollock Pines (Sly Park) 1005 Comment
  UCD132492  Grindelia camporum W. W. Robbins 1931-8-2 2230 Solano Near Vacaville. Comment
  CAS-BOT-BC304970  Grindelia hirsutula G. Thomas Robbins 1943-7-10 1259 El Dorado In Eddy Arboretum at Institute of Forest Genetics, 3 mi. e. of Placerville 822 Comment
  JEPS19011  Grindelia hirsutula G. Thomas Robbins 1957-9-15 3805 Alameda on roadside berm along Broadway about one-half mi w Lake Temescal; Oakland 60 Comment
  JEPS22045  Grindelia hirsutula G. Thomas Robbins 1958-6-25 3882 Marin about 1 mi n of Rodeo Lagoon; Fort Cronkhite Military Reservation 167 Comment
  JEPS25012  Grindelia hirsutula G. Thomas Robbins 1958-9-20 3938 Alameda about 0.5 e Toll Plaza (San Francisco-Oakland Bay Bridge, along the shore of San Francisco Bay); San Francisco Bay Comment
  JEPS25021  Grindelia hirsutula G. Thomas Robbins 1958-10-4 3945 Alameda near the w end Williams St. (San Leandro, at the edge of San Francisco Bay); San Francisco Bay, San Leandro Comment
  JEPS25079  Grindelia hirsutula G. Thomas Robbins 1958-10-25 3955 Alameda along US Hwy 50 (Foothill Blvd.) about 1/2 mi s Estudillo Ave. junction; San Leandro Comment
  JEPS25234  Grindelia hirsutula G. Thomas Robbins 1959-7-12 4109 Alameda about 0.25 mi n of w end Depot Road (just e of American Salt Co., about 1.75 mi nw of Mt. Eden, about 0.75 mi s of Russell, along the shore of San Francisco Bay); San Francisco Bay 1 Comment
  JEPS25236  Grindelia hirsutula G. Thomas Robbins 1959-7-24 4112 Alameda at the ne corner of Shattuck Ave. and Rose St.; Berkeley 79 Comment
  JEPS25237  Grindelia hirsutula G. Thomas Robbins 1959-7-24 4113 Alameda just n of the intersection of Harrison and 9th Street (just s of Codornices Creek); Berkeley 10 Comment
  JEPS8227  Grindelia hirsutula G. Thomas Robbins with D. M. Post, J. W. Dawson, and P. H. Raven 1954-9-3 3647 Stanislaus plains along Vernalis-Modesto road (Maze Road) 1.8 mi e bridge crossing San Joaquin River (5.4 mi e of Vernalis) 7 Comment
  JEPS89200  Grindelia hirsutula G. Thomas Robbins 1958-10-2 3941 Contra Costa borders of tidal slough along Southern Pacific R.R. just w Carlson Blvd. (near Stege railroad siding); Richmond Comment
  OBI16367  Grindelia hirsutula G. Thomas Robbins 1958-6-25 3882 Marin Fort Cronkite Military Reservation ,about 1 mi N of Rodeo Lagoon 168 Comment
  UC1599357  Grindelia hirsutula G. Thomas Robbins 1959-4-26 4003 Contra Costa just n Richmond-San Rafael Bridge (above shore of San Francisco Bay, s of Castro Pt.); Richmond, Potrero Hills Comment
  UC1599360  Grindelia hirsutula G. Thomas Robbins 1958-10-4 3945 Alameda beach at edge San Francisco Bay (near w end of Williams St.); San Leandro Comment
  UC747157  Grindelia hirsutula G. Thomas Robbins with J. T. Howell 1945-5-9 1901 Marin near Hamilton Field Air Base 0 Comment
  SEINET195483  Grindelia hirsutula var. davyi G. T. Robbins 1943-7-10 1259 El Dorado Eddy Arboretum at Institute of Forest Genetics 3 miles E of Placerville 823 Comment
  SEINET195657  Grindelia hirsutula var. hirsutula G. T. Robbins, JT Howell 1945-5-9 1901 Marin Hamilton Field Air Base Comment
  OBI16401  Grindelia stricta var. angustifolia G. Thomas Robbins 1958-9-20 3938 Alameda San Francisco bay, about 1/2 mi E of the Toll Plaza, San Francisco-Oakland Bay bridge, Oakland Comment
  RSA144687  Grindelia stricta var. angustifolia G. Thomas Robbins 1958-10-2 3941 Contra Costa Along Southern Pacific Railroad just W of Carlson Blvd., near Stege railroad siding, Richmond. Comment
  RSA152121  Grindelia stricta var. platyphylla G. Thomas Robbins 1955-6-4 3657 Marin NW of Rodeo Lagoon. Comment
  UC1057468  Guillenia lasiophylla G. Thomas Robbins 1940-3-16 277 Alameda about 1 mi w Corral Hollow (along road to Tracy) 381 Comment
  SBBG62984  Gutierrezia microcephala J. R. and R. C. Robbins 1932-9-17 San Bernardino E of Baker Comment
  UC747572  Hackelia micrantha G. Thomas Robbins 1944-7-28 1788 El Dorado 1/4 mi w of Rockbound Pass (along Willow Flat Trail); Desolation Valley Wilderness Area 2438 Comment
  UC907690  Hackelia micrantha G. Thomas Robbins 1945-7-8 2052 El Dorado above Eagle Lake (along Velma Lakes Trail); Desolation Valley Wilderness Area 2438 Comment
  UC747627  Hackelia nervosa G. Thomas Robbins 1943-6-27 1234 El Dorado near road to Audrain Lake (w of Echo Summit Pass, along U.S. Hwy 50) 2194 Comment
  JEPS7977  Hackelia sharsmithii G. Thomas Robbins 1954-7-24 3628 Tulare in upper reaches of Crabtree Creek (above unnamed lake); Sequoia National Park 3444 Comment
  UC747562  Hackelia velutina G. Thomas Robbins 1943-7-25 1330 El Dorado about 1 mi s of Echo Lake (along roadside) 2194 Comment
  SD185517  Hazardia squarrosa var. grindelioides Jolynn Robbins 2004-8-23 32 San Diego Damon Lane County Park in south El Cajon. N of the intersection of Fury Ln and Wieghorst Way. 68 Comment
  JEPS25245  Hazardia squarrosa var. squarrosa G. Thomas Robbins with John Weiler 1959-8-5 4123 Monterey 2.7 mi n Granite Canyon (along State Highway 1, 0.50 to 0.75 mi s of Malpaso Creek, 1.7 mi s of Carmel Highlands) 36 Comment
  SD158208  Hedypnois cretica Jolynn Robbins 2004-4-5 6 San Diego Damon Lane County Park in El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  UC747158  Helenium bigelovii G. Thomas Robbins 1945-8-6 2108 El Dorado near Schlien Ranger Station; Long Meadow 1676 Comment
  JEPS22068  Helenium puberulum G. Thomas Robbins 1958-7-19 3901 Contra Costa about one-half mi e Point San Pablo (meadow overlooking Pt. San Pablo); Richmond Comment
  JEPS25146  Helianthella californica subsp. californica G. Thomas Robbins 1959-5-16 4016 Sonoma Spring Mtn. Road between Calistoga Road and Sonoma-Napa County line; Mayacamas Mts. 304 Comment
  SD135123  Helianthus gracilentus Marya Robbins 1992-5-5 San Diego Camp Pendleton, Yankee 2 training area. Level bottom of valley between San Mateo and Jardine Canyons Comment
  UCD81552  Heliotropium curassavicum var. oculatum W. W. Robbins; W. D. Norton 1928-8-1 1423 Yolo near Clarksburg. Comment
  UCD119437  Heliotropium curassavicum var. oculatum G. Thomas Robbins 1958-7-26 3915 Alameda Bed of Southern Pacific railroad tracks just southeast of Berkeley Aquatic Park and just east of KRE radio transmission station, Berkeley. Comment
  UCD132951  Helminthotheca echioides W. W. Robbins 1931-8-2 2229 Solano near Benicia. Comment
  CAS-BOT-BC310044  Hemizonella minima G. Thomas Robbins 1943-6-13 1161 El Dorado Along Park Creek road, w. of its junction with the Plum Creek and Hazel Valley roads 1219 Comment
  UC747163  Hemizonella minima G. Thomas Robbins 1943-6-13 1161 El Dorado w of junction with the Plum Creek and Hazel Valley roads (along Park Creek road) 1219 Comment
  UC907780  Hemizonia congesta subsp. congesta G. Thomas Robbins with J. T. Howell 1945-5-9 1898 Marin 1/2 mi n Hamilton Field Air Base Comment
  JEPS22052  Hemizonia congesta subsp. luzulifolia G. Thomas Robbins 1958-6-22 3877 Alameda serpentine outcrop along Joaquin Miller Rd. just n junction with Skyline Blvd.; Oakland Comment
  UCD133008  Hemizonia congesta subsp. luzulifolia Robbins; Norton 1927-10-1 828 Unknown County Unknown: Exact location unknown. Comment
  UC1084378  Heracleum lanatum G. Thomas Robbins 1937-4-11 75 San Mateo along Skyline Blvd. s. of San Francisco Comment
  UC747314  Hesperolinon micranthum G. Thomas Robbins 1943-6-22 1210 El Dorado 3 mi e Placerville (near Institute of Forest Genetics) 762 Comment
  UC747048  Heterocodon rariflorum G. Thomas Robbins 1943-7-8 1253 El Dorado 3 mi e Camino (slope above North Fork Webber Creek) 975 Comment
  UC746970  Heteromeles arbutifolia G. Thomas Robbins 1943-6-29 1236 El Dorado 3 mi e Placerville (Institute of Forest Genetics) 822 Comment
  JEPS22046  Heterotheca sessiliflora subsp. bolanderi G. Thomas Robbins 1958-6-25 3881 Marin about 1 mi n Rodeo Lagoon; Fort Cronkhite Military Reservation 167 Comment
  OBI16099  Heterotheca sessiliflora subsp. bolanderi G. Thomas Robbins 1958-6-25 3881 Marin Fort Cronkhite Military Reservation, about 1 mi N of Rodeo Lagoon 168 Comment
  JEPS16139  Heterotheca sessiliflora subsp. echioides G. Thomas Robbins with John Dawson and Bob Ornduff 1956-10-6 3791 Monterey along roadside between Jamesburg and Tassajara Hot Springs near entrance to U.S. Forest Service China Camp Ground; Santa Lucia Range 1310 Comment
  SBBG78097  Heuchera maxima R. C. and J. R. Robbins 1921-3-28 Santa Barbara Santa Cruz Island Comment
  UCD102644  Heuchera micrantha W. W. Robbins 1926-4-17 538 Nevada Grass Valley. Comment
  UC747337  Heuchera micrantha var. erubescens G. Thomas Robbins 1945-7-16 2067 El Dorado 3 mi e Camino (along North Fork Webber Creek); North Fork Webber Creek 914 Comment
  RSA0062969  Heuchera micrantha var. erubescens G. Thomas Robbins 1945-6-17 1980 El Dorado Along Camp Creek, near Baltic Peak. 976 Comment
  RSA0066223  Heuchera rubescens var. alpicola G. Thomas Robbins 1945-7-8 2057 El Dorado Along Velma Lakes trail near Eagle Creek. 1-2 miles W of Emerald Bay. 2134 Comment
  UC747339  Heuchera rubescens var. glandulosa G. Thomas Robbins 1945-7-8 2057 El Dorado 1-2 mi w Emerald Bay (along Velma Lakes trail near Eagle Creek) 2133 Comment
  UC747352  Heuchera rubescens var. glandulosa G. Thomas Robbins 1943-9-5 1386 El Dorado e and below Dicks Peak 2895 Comment
  UCD116341  Hibiscus denudatus W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC747183  Hieracium albiflorum G. Thomas Robbins 1943-6-16 1177 El Dorado 3 mi e Placerville (near Institute of Forest Genetics) 762 Comment
  SBBG66326  Hieracium argutum R. C. and J. R. Robbins 1921-2-16 Santa Barbara Rattlesnake Cyn Comment
  RSA32384  Hieracium horridum G. Thomas Robbins 1943-9-5 1385 El Dorado Rocky ridge just west of Dicks Pass along trail to summit of Dicks Peak. 2896 Comment
  UCD90073  Hilaria rigida G. Thomas Robbins; Rimo Bacigalupi 1952-4-19 3432 San Bernardino along U.S. Highway 91, about 1 mile west of Cronese (Cronese Valley), Mohave Desert. 396 Comment
  CAS-BOT-BC208199  Hoffmannseggia glauca Tom Robbins 1937-7-24 s.n. Alameda California Nursery Co. Niles Comment
  UC1084457  Hoita orbicularis G. Thomas Robbins 1937-6-5 219 Sonoma 10 mi w Santa Rosa; Vine Hill region, Pitkin Ranch Comment
  UCD84878  Holcus lanatus Robbins; Raynor 1943-6-1 s.n. Plumas Quincy. Comment
  CAS-BOT-BC324595  Holocarpha macradenia G. Thomas Robbins 1959-10-11 4168 Santa Cruz Along E. Lake Ave. (State Highway 152), about 1 mile southwest of its junciton with the Hecker Pass Road, just south of the Santa Cruz Co. Fairgrounds 35 Comment
  JEPS24290  Holocarpha macradenia G. Thomas Robbins 1959-10-11 4168 Santa Cruz 1 mi sw of its junction with the Hecker Pass Road; E. Lake Ave (State Highway 152). S. of Fairgrounds 35 Comment
  RSA151923  Holocarpha macradenia G. Thomas Robbins 1959-10-11 4168 Santa Cruz Along E. Lake ave. (State Hwy 152), about 1 mile southwest of its jct. with the Hecker Pass Rd. just south of the Santa Cruz Co. Fairgrounds 35 Comment
  JEPS25273  Holocarpha obconica G. Thomas Robbins 1959-9-6 4160 Contra Costa 0.6 mi e of junction with Marsh Creek Road; Vasco Road 70 Comment
  CAS-BOT-BC320298  Holocarpha virgata G. Thomas Robbins 1956-9-7 3745 El Dorado Along U. S. Highway 50, 4 miles west of Shingle Springs 350 Comment
  UC1084468  Holodiscus discolor G. Thomas Robbins 1937-6-6 233 Sonoma 2-3 mi e of Bodega Bay Comment
  JEPS24325  Holozonia filipes G. Thomas Robbins with Robt. Ornduff and Howard Whisler 1959-10-25 4170 San Joaquin 3.5 mi e Farmington (0.5 mi w of Stanislaus Co. line, along State Highway 4, in the first low, rolling foothills of the Sierra Nevada); Sierra Nevada, Duck Creek 42 Comment
  UC907613  Hordeum marinum subsp. gussoneanum G. Thomas Robbins 1943-6-10 1152 El Dorado about 3 mi e Camino (canyon slope above North Fork Webber Creek); canyon slope above North Fork Webber Creek 975 Comment
  UC747259  Horkelia fusca subsp. parviflora G. Thomas Robbins 1943-8-15 1357 El Dorado near Wrights Lake 2286 Comment
  UC907619  Horkelia fusca subsp. parviflora G. Thomas Robbins 1945-8-5 2094 El Dorado ca 1/2 mi s Rubicon Springs 1828 Comment
  CAS-BOT-BC532478  Horkelia fusca var. parviflora G. Thomas Robbins 1945-8-5 2094 El Dorado Grassy meadow at edge of Lodgepole pine woods, about 1/2 mile S of Rubicon Springs 1828 Comment
  SEINET3256452 Image available Horkelia fusca var. parviflora G. Thomas Robbins 1945-8-5 2094 El Dorado Woods about 1/2 mi. s. of Rubicon Springs. 1830 Comment
  UC907620  Horkelia parryi G. Thomas Robbins 1945-5-27 1951 El Dorado ca 1.5 mi n Pleasant Valley (along Camino-Pleasant Valley Rd) 762 Comment
  UCD113565  Horkelia tridentata W. W. Robbins 1928-4-29 953 Sacramento American River. Comment
  CAS-BOT-BC536267  Horkelia tridentata var. tridentata G. Thomas Robbins 1945-8-5 2088 El Dorado Above north shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area 2011 Comment
  CAS-BOT-BC315831  Hulsea algida G. Thomas Robbins 1945-8-12 2116 El Dorado Western face of Freel Peak near summit 3322 Comment
  UC907729  Hulsea algida G. Thomas Robbins 1945-8-12 2116 El Dorado w face Freel Peak (near summit) 3322 Comment
  UC700283  Hydrophyllum occidentale G. Thomas Robbins 1943-5-23 1080 El Dorado 3 mi e Camino (woods along North Fork Webber Creek); North Fork Webber Creek 914 Comment
  UC746947  Hypericum anagalloides G. Thomas Robbins 1943-6-13 1173 El Dorado along rd. to and ca. 2 mi. w. of Park Creek 1219 Comment
  UC746943  Hypericum concinnum G. Thomas Robbins 1943-6-16 1180 El Dorado 3 mi. e Placerville (near Institute of Forest Genetics) 762 Comment
  SBBG72723  Hypericum formosum var. scouleri J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UC746948  Hypericum perforatum G. Thomas Robbins 1943-6-16 1176 El Dorado 3 mi. e Placerville (near Institute of Forest Genetics) 762 Comment
  UCD124923  Hyptis emoryi W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  JEPS26026  Ipomopsis aggregata G. Thomas Robbins 1951-6-26 3398 Fresno slopes above Mono Creek betw and opposite first and second recesses 2590 Comment
  UC1249655  Ipomopsis aggregata G. Thomas Robbins 1951-7-26 3398 Fresno above Mono Creek (betw and opposite first and second recesses) 2590 Comment
  JEPS26024  Ipomopsis aggregata G. Thomas Robbins 1951-6-17 3388 Placer 1.5 mi s Homewood (along state hwy 89) 1889 Comment
  SBBG58354  Ipomopsis aggregata subsp. aggregata J. R. and R. C. Robbins 1932-7-17 Mono Tioga Pass Comment
  JEPS8002  Ipomopsis polycladon G. Thomas Robbins with L. Constance and G. W. Gillett 1952-4-27 3469 San Bernardino near Hector Mines (on Mt Pisgah Crater lava flow, about 2 mi s of U.S. Hwy 66); Mohave Desert, Mt. Pisgah Crater Comment
  UC1249635  Ipomopsis tenuituba G. Thomas Robbins 1948-8-8 3181 Tuolumne ca 1 mi w Sonora Pass (along state hwy 108) Comment
  SEINET6190898 Image available Iris douglasiana L. F. Robbins 1928-1 s.n. San Francisco near Fort Winfield Scott Comment
  UC747019  Iris douglasiana G. Thomas Robbins with J. T. Howell 1944-4-13 1500 Marin 3-4 mi w Hamilton Field Air Base (on Big Rock Ridge); Big Rock Ridge 426 Comment
  UC747021  Iris hartwegii G. Thomas Robbins 1943-5-2 1062 El Dorado ca 3 mi e Camino; North Fork Webber Creek 914 Comment
  UC1057443  Iris longipetala G. Thomas Robbins 1937-4-11 82 San Mateo slopes above Spring Valley Lake (s of San Francisco) Comment
  SEINET6193236 Image available Iris macrosiphon L. F. Robbins 1927-1 s.n. Napa Napa county Comment
  SD165280  Isocoma menziesii var. decumbens Jolynn Robbins, Joe Barth 2004-8-2 25 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  SBBG62839  Isocoma menziesii var. vernonioides R. C. and J. R. Robbins 1920-10-23 Santa Barbara Carpinteria Comment
  JEPS25264  Isocoma menziesii var. vernonioides G. Thomas Robbins with John Weiler 1959-8-8 4151 Monterey 2.7 mi n San Ardo (along railroad right-of-way paralleling US Hwy 101) 121 Comment
  JEPS15691  Isoetes bolanderi G. Thomas Robbins 1956-9-10 3766 Amador just s Carson Spur (along State Hwy 88) 2435 Comment
  JEPS14636  Isolepis cernua G. Thomas Robbins 1955-6-4 3659 Marin along s shore Rodeo Lagoon; s shore Rodeo Lagoon Comment
  JEPS25008  Isolepis cernua G. Thomas Robbins 1958-9-1 3934 Alameda at edge near mouth Cordonices Creek (just e of the Eastshore Freeway, Albany-Berkeley City boundary); Albany-Berkeley City boundary, nr mouth Cordonices Creek Comment
  CAS-BOT-BC112606  Isolepis cernua Guy Thomas Robbins 1958-9-1 3934 San Mateo At edge of Cordonices Creek near its mouth, just E of the Eastshore Freeway Comment
  JEPS25254  Isolepis cernua G. Thomas Robbins with John Weiler 1959-8-7 4138 Monterey 2.5 mi s Pacific Valley School (0.4 mi s of Willow Creek crossing, along State Highway 1 directly opposite (e of) Cape San Martin); e of Cape San Martin, s of Pacific Valley School 60 Comment
  UC747413  Isopyrum occidentale G. Thomas Robbins 1944-3-19 1486 El Dorado 5-6 mi n Camino (slope of South Fork American River canyon); South Fork American River Canyon 762 Comment
  JEPS22099  Iva axillaris subsp. robustior G. Thomas Robbins 1958-7-19 3909 Contra Costa at edge of rock quarry on hills above and just s Castro Pt.; San Francisco Bay, Richmond Comment
  CAS-BOT-BC139764  Ivesia gordonii G. Thomas Robbins 1944-7-28 1789 El Dorado At summit of Rockbound Pass, Desolation Valley Wilderness Area 2621 Comment
  UC747264  Ivesia gordonii G. Thomas Robbins 1944-7-28 1789 El Dorado Rockbound Pass summit; Desolation Valley Wilderness Area 2621 Comment
  SBBG72486  Ivesia lycopodioides var. megalopetala J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  CAS-BOT-BC142469  Ivesia santolinoides G. Thomas Robbins 1944-7-30 1820 El Dorado Along Willow Flat Trail, about 3 mi. NE of Wrights Lake, 9 mi. n. of U.S. Highway 50 2286 Comment
  JEPS15532  Jaumea carnosa G. Thomas Robbins 1956-8-18 3738 San Mateo mouth of Pomponio Creek (at Pacific Ocean) Comment
  JEPS25233  Jaumea carnosa G. Thomas Robbins 1959-7-11 4108 Alameda about one-fourth mi s East Creek Slough (ne edge of bay); Oakland, San Leandro Bay Comment
  JEPS25235  Jaumea carnosa G. Thomas Robbins with S. Galen Smith 1959-7-18 4111 Marin one-half mi s Inverness (salt marsh along w shore of bay); Tomales Bay Comment
  OBI15978  Jaumea carnosa G. Thomas Robbins 1959-7-18 4111 Marin Along W shore of Tomales Bay, 1/2 mi S of Inverness Comment
  CAS-BOT-BC340271  Jensia rammii G. Thomas Robbins 1943-4-30 1056 El Dorado Near Institute of Forest Genetics, 3 mi. e. of Placerville 762 Comment
  UC747130  Jensia rammii G. Thomas Robbins 1943-4-30 1056 El Dorado near Institute of Forest Genetics (3 mi e of Placerville) 762 Comment
  UC747203  Jensia rammii G. Thomas Robbins 1943-4-15 997 El Dorado about 3 mi e Camino (above North Fork Webber Creek); on canyon side above North Fork Webber Creek 975 Comment
  CAS-BOT-BC340276  Jensia rammii G. Thomas Robbins; Peter H. Raven 1956-4-28 3678 El Dorado Along Placerville - Georgetown road, 4.4 miles north of Kelsey, 4.6 miles south of Georgetown 670 Comment
  UC747206  Jensia rammii G. Thomas Robbins 1943-7-18 1277 El Dorado 5 mi s Pollock Pines (Sly Park meadow along Pleasant Valley road); Sly Park 1005 Comment
  CAS-BOT-BC47589  Jepsonia heterandra G. Thomas Robbins; Galen Smith; Harold Smith 1956-11-18 3797 Tuolumne Fivemile Creek (a tributary of the South Fork Stanislaus River) 472 Comment
  JEPS16232  Jepsonia heterandra G. Thomas Robbins with Galen and Harold Smith 1956-11-18 3797 Tuolumne <along creek> 5.1 mi ne Columbia (just above road Italian Bar (about 1 mi w of)); Fivemile Creek (a tributary of the South Fork Stanislaus Riv 472 Comment
  JEPS25132  Juncus ambiguus G. Thomas Robbins 1959-4-25 4000 Alameda just s Emeryville interchange (Powell St.), Emeryville (at the w edge of the Eastshore Highway, along the shore of San Francisco Bay); San Francisco Bay Comment
  UC747501  Juncus chlorocephalus G. Thomas Robbins 1944-7-30 1827 El Dorado ca 1.5 mi ne Wright Lake (along Twin Lakes trail) 2438 Comment
  JEPS15540  Juncus covillei var. obtusatus G. Thomas Robbins with L. R. Heckard 1956-7-25 3698 Colusa se extension Snow Mt. West (at e base of ridge that forms extension, about 0.5 air mi from its summit, Lake-Colusa County boundary) 1889 Comment
  UC747508  Juncus ensifolius G. Thomas Robbins 1944-7-6 1753 El Dorado 5 mi s Pollock Pines 975 Comment
  JEPS30774  Juncus lescurii G. Thomas Robbins 1950-5-13 3345 San Luis Obispo se of Oso Flaco Lake Comment
  UC972358  Juncus lescurii G. Thomas Robbins 1950-5-13 3345 San Luis Obispo se of Oso Flaco Lake Comment
  UC747500  Juncus macrandrus G. Thomas Robbins 1944-7-6 1757 El Dorado 5 mi s Pollock Pines; Sly Park 975 Comment
  JEPS25248  Juncus rugulosus G. Thomas Robbins with John Weiler 1959-8-6 4128 Monterey just n Big Sur P.O. (River Village) (along Big Sur River); Big Sur River 38 Comment
  JEPS22102  Juncus xiphioides G. Thomas Robbins 1958-7-26 3912 Alameda 0.12 mi w Warren Blvd. (along Park Blvd. on slopes above Dimond Canyon); Oakland Comment
  JEPS25266  Juncus xiphioides G. Thomas Robbins 1959-8-30 4153 Alameda just e intersection of Lakeshore Ave. (at corner of Excelsior Ct and MacArthur Blvd); Oakland 7 Comment
  UC1101103  Juncus xiphioides G. Thomas Robbins and S. Galen Smith 1949-11-19 1902 Marin Liberty Gulch Mt. Tamalpais Comment
  CAS-BOT-BC81104  Juniperus communis G. Thomas Robbins 1944-7-29 1811 El Dorado east and below Lake Leland, Desolation Valley Wilderness Area 2438 Comment
  SBBG56442  Juniperus grandis J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UC747694  Juniperus occidentalis G. Thomas Robbins 1943-7-25 1283 El Dorado e of Medley Lakes (above Lake LeConte); Desolation Wilderness Area 2590 Comment
  A362735  Kalmia microphylla G. T. Robbins 1944-7-28 1794 Unknown Wet meadow above Lake Doris just east of Rockbound Pass, Desolation Valley Wilderness Area 2590 Comment
  GH362734  Kalmia microphylla G. T. Robbins 1945-7-1 2026 Unknown Wet meadow along trail between Grouse Lake and Hemlock Lake, 2-3 miles east of Wrights Lake, nine miles north of U. S. Highway 50 2590 Comment
  CAS-BOT-BC59643  Kalmia microphylla subsp. microphylla G. Thomas Robbins 1945-7-1 2026 El Dorado Along trail between Grouse Lake and Hemlock Lake, 2-3 mi. e. of Wrights Lake, 9 mi. n. of US Highway 50. 2590 Comment
  UC747651  Kalmia polifolia subsp. microphylla G. Thomas Robbins 1944-7-28 1794 El Dorado above Lake Doris (just e of Rockbound Pass, Desolation Valley Wilderness Area); Desolation Valley Wilderness Area 2590 Comment
  UC747676  Kalmia polifolia subsp. microphylla G. Thomas Robbins 1945-7-1 2026 El Dorado 2-3 mi e of Wrights Lake (9 mi n of U.S. Highway 50, along trail between Grouse Lake and Hemlock Lake) 2590 Comment
  JEPS7779  Keckiella breviflora G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3543 Tulare 7.5 mi n Springville (on road to Balch Park, about 0.5 mi e of Milo junction) 609 Comment
  CAS-BOT-BC237829  Keckiella lemmonii G. Thomas Robbins 1945-7-16 2071 El Dorado Above North Fork Webber Creek, 3 mi. e. of Camino 975 Comment
  UC747115  Keckiella lemmonii G. Thomas Robbins 1945-7-16 2071 El Dorado 3 mi e Camino (slope above North Fork Webber Creek) 975 Comment
  UC747469  Keckiella lemmonii G. Thomas Robbins 1945-8-5 2085 El Dorado n shore Rockbound Lake (Rockbound Valley); Desolation Valley Wilderness Area 2011 Comment
  RSA32352  Kelloggia galioides G. Thomas Robbins 1945-7-8 2044 El Dorado Near Al Tahoe, Lake Tahoe. 1921 Comment
  JEPS22017  Kickxia elatine G. Thomas Robbins 1958-6-14 3864 Alameda about 0.5 mi w Mt. Eden station (near w end of Depot Rd) 1 Comment
  JEPS23258  Kickxia elatine G. Thomas Robbins 1958-10-19 3954 Alameda n edge Russell City (and s edge of Hayward Municipal Airport) Comment
  UCD123888  Kickxia elatine G. Thomas Robbins 1958-6-14 3864 Alameda near west end of Depot Road, about one-half mile west of Mt. Eden Station. 1 Comment
  UCD123890  Kickxia elatine W. W. Robbins 1930-7-3 2161 Yolo University Farm. Comment
  JEPS24326  Kickxia spuria G. Thomas Robbins with Robert Ornduff and Howard Whisler 1959-10-25 4172 San Joaquin 3.5 mi e Farmington (banks and in stream bed of Duck Creek, along State Highway 4, 0.5 mi w of Stanislaus County line, in first low rolling foothills of the Sierra Nevada); Sierra Nevada, Duck Creek 42 Comment
  UC907760  Kyhosia bolanderi G. Thomas Robbins 1945-8-6 2106 El Dorado near Schlien Ranger Station; Long Meadow 1676 Comment
  CAS-BOT-BC340336  Kyhosia bolanderi G. Thomas Robbins 1945-8-6 2106 El Dorado In Long Meadow near Schlien [Schlein] Ranger Station 1676 Comment
  JEPS25242  Lactuca saligna G. Thomas Robbins 1959-8-2 4119 Alameda about 1.75 mi nw Mt. Eden (about 0.75 mi s of Russell, about 0.25 mi n of the w end of Depot Road, just e of American Salt Company, along the shore of San Francisco Bay); San Francisco Bay 1 Comment
  UCD133524  Lactuca saligna G. Thomas Robbins 1959-8-2 4119 Alameda about 1/4 mile north of the west end of Depot road, just east of the American Salt Co. Along the shore of San Francisco Bay, about 1.75 miles northwest of Mt. Eden, about 3/4 mile south of Russell. 1 Comment
  UCD63304  Lamarckia aurea W. W. Robbins 1931-5-11 2202 Orange Santa Ana. Comment
  JEPS21995  Lamium amplexicaule G. Thomas Robbins 1958-4-19 3814 Alameda about .17 mi n, field along Depot Road, just e of Clawiter Road Mt. Eden Station 7 Comment
  UCD107213  Larrea tridentata W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  CAS-BOT-BC337921  Lasthenia californica G. Thomas Robbins 1943-3-25 966 El Dorado Flat near Institute of Forest Genetics, 3 mi. e. of Placerville 762 Comment
  JEPS25099  Lasthenia conjugens G. Thomas Robbins 1959-3-29 3963 Alameda about 0.25 mi n of w end Depot Road (adjacent to (just e of) the American Salt Co., along shore of San Francisco Bay about, 1.75 mi nw of Mt. Eden and 0.75 mi s of Russell); San Francisco Bay 1 Comment
  UC747294  Lathyrus sulphureus G. Thomas Robbins 1943-6-5 1130 El Dorado about 3 mi e Camino (slope above North Fork Webber Creek) 975 Comment
  UC1084401  Lathyrus vestitus var. vestitus G. Thomas Robbins 1937-4-17 120 Contra Costa near Pt. Richmond Comment
  UC21991  Lavatera cretica G. Thomas Robbins 1958-4-19 3819 Alameda along roadside w of Russell and about 1/4 mi e Hayward Landing (on San Francisco Bay); , e of Hayward Landing 1 Comment
  JEPS24288  Layia chrysanthemoides G. Thomas Robbins with Hsuan Keng and Erika Amstutz 1959-4-3 3973 Sonoma along shallow drainage ditch by State Highway 37 (about .5 mi e of big Bend and .25 mi w of Sonoma Creek crossing); Sonoma Valley 3 Comment
  JEPS14587  Layia pentachaeta subsp. pentachaeta G. Thomas Robbins with Peter H. Raven 1956-4-29 3689 El Dorado 1.2 mi nw of , near bridge crossing river Somerset (Youngs); North Fork Cosumnes River Comment
  JEPS21977  Layia platyglossa G. Thomas Robbins 1958-5-24 3836 Marin one-half mi e of Pt. Reyes Lighthouse 152 Comment
  SBBG79723  Layia platyglossa R. C. and J. R. Robbins -Mar-1921 Santa Barbara Santa Cruz Island Comment
  UC1084446  Ledum glandulosum G. Thomas Robbins 1937-5-23 203 Sonoma about 10 mi w of Santa Rosa (on Pitkin Ranch); Vine Hill region, Pitkin Ranch Comment
  UC572646  Ledum glandulosum G. Thomas Robbins 1937-5-23 203 Sonoma Vine Hill Region, Pitkin Marsh Pitkin Marsh; Vine Hill Region, Pitkin Marsh Comment
  CAS-BOT-BC215726  Lepechinia calycina G. Thomas Robbins 1945-5-20 1940 El Dorado Hillslope above Sweetwater Creek, 2-3 miles s. of Salmon Falls 182 Comment
  GH400259  Lepechinia calycina G. T. Robbins 1945-5-20 1940 Unknown hillslope above Sweetwater Creek, 2-3 miles s. of Salmon Falls 182 Comment
  UC747554  Lepechinia calycina G. Thomas Robbins 1945-5-20 1940 El Dorado above Sweetwater Creek, 2-3 miles S of Salmon Fallas 182 Comment
  UCD115332  Lepidium appelianum G. Thomas Robbins 1959-9-13 4162 Contra Costa North edge of Pinole. Comment
  SD45206  Lepidium flavum G. Thomas Robbins 1950-4-2 3310 Kern Red Rock Canyon near The Temple, ca. 1 mile south of Ricardo 760 Comment
  SD45208  Lepidium flavum G. Thomas Robbins 1950-4-2 3310 Kern Red Rock Canyon, near The Temple, ca. 1 mile south of Ricardo 760 Comment
  SBBG70809  Lepidium flavum J. R. and R. C. Robbins 1930-3-25 Los Angeles W Mojave Desert Comment
  JEPS7457  Lepidium jaredii G. Thomas Robbins and Rimo Bacigalupi 1952-4-20 3454 San Luis Obispo about 8 mi se Soda Lake (just e of lowest point in Carrizo Plain); Carrizo Plain 594 Comment
  SD46154  Lepidium jaredii G. Thomas Robbins, Rimo Bacgalupi 1952-4-20 3454 San Luis Obispo Alkali bottom just east of lowest point in Carrizo Plain, ca. 8.0 miles southeast of Soda Lake. 594 Comment
  JEPS7769  Lepidium lasiocarpum var. lasiocarpum G. Thomas Robbins 1952-4-29 3479 San Bernardino s and above Gilroy Canyon (e Mohave Desert); Mohave Desert, Providence Mountains Comment
  UC747368  Lepidium nitidum G. Thomas Robbins 1943-4-15 1000 El Dorado about 3 mi e Camino (above North Fork Webber Creek) 975 Comment
  JEPS21993  Lepidium oxycarpum G. Thomas Robbins 1958-4-19 3816 Alameda ca. 0.6 mi. w. Mt. Eden Station (at w. end of Depot Rd., adjacent to San Francisco Bay) 1 Comment
  UCD115766  Lepidium oxycarpum G. Thomas Robbins 1958-4-19 3816 Alameda West end of Depot Road, adjacent to San Francisco Bay, about 0.6 mile west of Mt. Eden Station. 1 Comment
  UCD115836  Lepidium strictum G. Thomas Robbins 1959-4-26 4006 Contra Costa About 1 mile northeast of Giant and about one-fourth mile north of San Pablo Oil Tank Farm. 7 Comment
  CAS-BOT-BC226535  Leptosiphon acicularis G. Thomas Robbins 1945-5-5 1872 Marin At the north base of Big Rock Ridge, 2 to 3 miles west of Hamilton Field Air Base Comment
  CAS-BOT-BC226980  Leptosiphon ambiguus G. Thomas Robbins 1950-4-23 3340 Santa Clara 2.5-3 miles northeast of Coyote, foothills of the Mount Hamilton Range 365 Comment
  SEINET3363427 Image available Leptosiphon androsaceus G. Thomas Robbins 1944-4-14 1506 Marin Big rock ridge, 2 miles west of Hamilton Field Air Base 61 Comment
  POM196068  Leptosiphon androsaceus L. F. Robbins 1927-4-15 s.n. Napa [no locality information provided] Comment
  UCSB5168  Leptosiphon bicolor Robbins, G. 1945-5-20 El Dorado Placerville - Rescue Road, 3 miles east of Rescue 457 Comment
  SBBG64525  Leptosiphon ciliatus J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  RSA98609  Leptosiphon montanus G. Thomas Robbins 1945-6-17 1986 El Dorado above Camp Creek near Baltic Peak. 1006 Comment
  SBBG60886  Leptosyne bigelovii R. C. and J. R. Robbins 1921-4-4 Santa Barbara Cold Springs Trail, Montecito Comment
  SBBG79708  Leptosyne gigantea R. C. and J. R. Robbins 1922-3-28 Santa Barbara Santa Cruz Island Comment
  JEPS15560  Lesquerella occidentalis subsp. occidentalis G. Thomas Robbins with L. R. Heckard 1956-7-25 3721 Lake summit summit of Snow Mt. West (Lake-Colusa Co. boundary); Snow Mt. West 2145 Comment
  UCD134124  Leucanthemum vulgare Robbins; Raynor 1943-6-1 s.n. Plumas Quincy. Comment
  UC747669  Leucothoe davisiae G. Thomas Robbins 1943-6-20 1190 El Dorado 2-3 mi w of Pollock Pines (near head of Long Canyon); Long Canyon 975 Comment
  JEPS7966  Lewisia pygmaea G. Thomas Robbins, Peter H. Raven 1954-7-28 3640 Tulare upper reaches of Crabtree Creek Sequoia National Park 3657 Comment
  SBBG69769  Lewisia pygmaea J. R. and R. C. Robbins 1932-7-17 Mono Tioga Pass Comment
  UC746849  Lewisia triphylla G. Thomas Robbins 1945-7-1 2018 El Dorado on road 4 mi s Wrights Lake (near Lyons Creek); Lyons Creek 2042 Comment
  UC746850  Lewisia triphylla G. Thomas Robbins 1945-7-1 2023 El Dorado near Wrights Lake 2133 Comment
  CAS-BOT-BC444476  Lewisia triphylla G. Thomas Robbins; L. R. Heckard 1956-7-25 3708 Colusa Along trail due south of Snow Mt. East and skirting the eastern base of the ridge forming Snow Mt. West 2042 Comment
  JEPS22090  Leymus X multiflorus G. Thomas Robbins 1958-7-19 3902 Contra Costa about 1/2 mi e Pt. San Pablo (meadow overlooking San Pablo Bay); Richmond Comment
  JEPS22010  Leymus triticoides G. Thomas Robbins 1958-6-14 3870 Alameda alkaline field near end of Willow Road (sw of Newark) 3 Comment
  SEINET8533919 Image available Libocedrus decurrens G. Thomas Robbins 1944-1 1832 El Dorado At CCC Camp Snowline, 3 miles east of Camino. elevation 3400 feet. 1036 Comment
  CAS-BOT-BC436021  Ligusticum grayi G. Thomas Robbins 1943-9-5 1380 El Dorado Along trail to Mt. Tallac above Gilmore Lake 2590 Comment
  CAS-BOT-BC130705  Lilium pardalinum G. Thomas Robbins 1945-7-16 2065 El Dorado Along North Fork Webber Creek, 3 mi. e. of Camino 914 Comment
  UC747550  Lilium pardalinum G. Thomas Robbins 1943-7-10 1265 El Dorado about 3 mi e Camino; North Fork Webber Creek 914 Comment
  UC747534  Lilium washingtonianum subsp. washingtonianum G. Thomas Robbins 1943-6-20 1204 El Dorado 4-5 mi nw Pollock Pines (along road to powerhouse) 914 Comment
  UC747318  Limnanthes alba subsp. versicolor G. Thomas Robbins 1945-4-22 1855 El Dorado about 2 1/2 mi e Shingle Springs Comment
  UC1057485  Limnanthes douglasii G. Thomas Robbins 1938-4-15 259 Sonoma 6-7 mi w Santa Rosa (along road to Graton) Comment
  UC747616  Linanthus acicularis G. Thomas Robbins 1945-5-5 1872 Marin 2-3 mi w Hamilton Air Force Field (at n base of Big Rock Ridge); Big Rock Ridge Comment
  SEINET8729324 Image available Linanthus ambiguus G. Thomas Robbins 1950-1 3340 Santa Clara 2.5-3 miles northeast of Coyote, foothills of the Mount Hamilton Range. 366 Comment
  UC1023039  Linanthus bicolor G. Thomas Robbins 1945-4-22 1841 El Dorado 2-3 mi nw Shingle Springs 457 Comment
  UC1023041  Linanthus bicolor G. Thomas Robbins 1944-5-21 1615 El Dorado about 3 mi e Camino (canyon of North Fork Webber Creek); North Fork Webber Creek 975 Comment
  UC747615  Linanthus bicolor G. Thomas Robbins 1945-5-20 1923 El Dorado 3 mi e Rescue (along Placerville-Rescue road) 457 Comment
  UC972334  Linanthus ciliatus G. Thomas Robbins 1944-6-11 1674 El Dorado 2-3 mi ne Riverton (along Ice House Road) 1219 Comment
  SD45404  Linanthus dichotomus G. Thomas Robbins 1950-4-1 3293 Kern Gravelly slopes above Kern River, about 1 mile east of Isabella Comment
  UCSB5178  Linanthus dichotomus Robbins, G. 1945-4-22 El Dorado Serpentine rock outcrop 3 miles east of Shingle Springs along U. S. Highway 50 457 Comment
  JEPS13931  Linanthus filipes G. Thomas Robbins 1944-6-18 1717 El Dorado 5 mi s Pollock Pines; Sly Park 1005 Comment
  UC907942  Linanthus filipes G. Thomas Robbins 1944-6-18 1717 El Dorado 5 mi s Pollock Pines; Sly Park 975 Comment
  UC747604  Linanthus filipes G. Thomas Robbins 1943-7-18 1273 El Dorado near Sly Park (along Pleasant Valley Road) 914 Comment
  JEPS7447  Linanthus liniflorus G. Thomas Robbins and Rimo Bacigalupi 1952-4-15 3419 Kern w edge Tupman 91 Comment
  JEPS7962  Linanthus montanus G. Thomas Robbins 1953-5-7 3516 Calaveras about 2 mi s Vallecito (on road to Columbia) 487 Comment
  JEPS7456  Linanthus parryae G. Thomas Robbins, Rimo Bacigalupi 1952-4-19 3433 San Bernardino about midway between Barstow and Kramer Mohave Desert 731 Comment
  JEPS7765  Linanthus parryae G. Thomas Robbins, Rimo Bacigalupi 1952-4-26 3468 Kern 4.5 mi E of Walker Pass (summit) (Freeman Canyon; along State Highway 178) 1234 Comment
  JEPS22972  Linanthus parviflorus G. T. Robbins 1943-4-14 995 El Dorado just w Smith Flat 670 Comment
  JEPS30769  Linanthus parviflorus G. T. Robbins 1945-4-22 1861 El Dorado 3 mi w Shingle Springs 457 Comment
  UC747473  Linanthus parviflorus G. Thomas Robbins 1944-4-14 1514 Marin ca 2-3 mi w Hamilton Air Field Base; Big Rock Ridge 60 Comment
  UC747617  Linanthus parviflorus G. Thomas Robbins 1945-4-22 1861 El Dorado about 3 mi e Shingle Springs 457 Comment
  UC1008648  Linanthus parviflorus G. Thomas Robbins 1943-4-21 1019 El Dorado 3 mi e Placerville (w edge of Institute of Forest Genetics) 822 Comment
  UCD123911  Linaria vulgaris G. Thomas Robbins 1958-8-11 3924 Sonoma along Estero Lane, a dirt road south of State Highway 1, about 2 miles south of the highway, west of the town of Bodega. Comment
  UC746865  Lithocarpus densiflorus G. Thomas Robbins 1943-6-20 1194 El Dorado 4-5 mi nw Pollock (along road to powerhouse, n-facing wall of South Fork American River); South Fork American River 914 Comment
  UC747353  Lithophragma G. Thomas Robbins 1943-5-2 1065 El Dorado ca 3 mi e Camino ( North Fork Webber Creek); North Fork Webber Creek 914 Comment
  UC1084400  Lithophragma affine G. Thomas Robbins 1937-4-17 128 Contra Costa near Point Richmond Comment
  UC747340  Lithophragma affine G. Thomas Robbins 1944-4-14 1520 Marin about 3 mi w Hamilton Field Air Base (on n slope of Big Rock Ridge); w of Hamilton Field Air Base, n slope of Big Rock Ridge 60 Comment
  CAS-BOT-BC425347  Lithophragma affine G. Thomas Robbins 1943-5-2 1065 El Dorado Along North Fork Webber Creek, ca, 3 mi. E of Camino. 914 Comment
  CAS-BOT-BC430614  Lithophragma affine G. Thomas Robbins 1944-4-14 1520 Marin small stream on north slope of Big Rock Ridge, about 3 mi. w. of Hamilton Field Air Force Base 91 Comment
  UC747335  Lithophragma bolanderi G. Thomas Robbins 1945-5-17 1908 El Dorado about 3 mi e Camino (above North Fork Webber Creek); above North Fork Webber Creek 975 Comment
  UC747345  Lithophragma glabrum G. Thomas Robbins 1943-6-27 1223 El Dorado ridge above Echo Summit Pass (about 0.75 mi sw of U. S. Highway 50) 2438 Comment
  UC747342  Lithophragma heterophyllum G. Thomas Robbins 1944-4-14 1518 Marin about 3 mi w Hamilton Field Air Base (n slope of Big Rock Ridge); Big Rock Ridge 60 Comment
  UC1201246  Lobelia dunnii var. serrata G. Thomas Robbins with John Weiler 1959-8-6 4127 Monterey long Big Sur River, at and just n of Big Sur (River Village) post office Big Sur River 38 Comment
  UCD118891  Loeseliastrum schottii W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC747187  Logfia gallica G. Thomas Robbins 1944-6-9 1670 El Dorado 3 mi e Placerville; U. S. Highway 50 731 Comment
  UC747233  Lomatium utriculatum G. Thomas Robbins 1944-6-15 1690 El Dorado 2-3 mi E of Placerville (along US Hwy 50) 762 Comment
  UC747098  Lonicera conjugialis G. Thomas Robbins 1943-7-25 1309 El Dorado about 2 mi nw Echo Lake (along trail to Desolation Valley) 2286 Comment
  SBBG69546  Lonicera hispidula R. C. and J. R. Robbins 1921-5-21 Santa Barbara Bothin Ridge, Montecito Comment
  UC747082  Lonicera hispidula var. vacillans G. Thomas Robbins 1942-10-22 917 El Dorado about 5 mi ne Placerville; Iowa Creek 914 Comment
  SEINET3523631 Image available Lotus americanus G. Thomas Robbins 1944-6-15 1692 El Dorado Institute of Forest Genetics, 3 miles E of Placerville 823 Comment
  UC1057478  Lotus formosissimus G. Thomas Robbins 1937-5-23 211 Sonoma about 10 mi w Santa Rosa (on Pitkin Ranch, Vine Hill region); Vine Hill Region Comment
  UC907679  Lotus grandiflorus var. macranthus G. Thomas Robbins 1945-5-20 1939 El Dorado 2-3 mi s of Salmon Falls (above Sweetwater Creek) 182 Comment
  JEPS22120  Lotus heermannii G. Thomas Robbins 1940-5-15 314 San Francisco vicinity Rivera Street and 28th Avenue; Sunset District Comment
  UC747290  Lotus humistratus G. Thomas Robbins 1943-4-6 980 El Dorado 2 mi e Placerville (immediately s of Institute of Forest Genetics) 792 Comment
  UC747249  Lotus incanus G. Thomas Robbins 1944-5-28 1642 El Dorado 4-5 mi nw Pollock Pines (along road to power house) 914 Comment
  SEINET3694382 Image available Lotus oblongifolius G. Thomas Robbins 1945-8-5 2098 El Dorado Trail to Pleasant Lake, 3-4 miles E of Wentworth Springs 2073 Comment
  RSA32411  Lotus oblongifolius var. nevadensis G. Thomas Robbins 1945-8-5 2098 El Dorado 3-4 mi. e. of Wentworth Springs. Comment
  UC747245  Lotus oblongifolius var. oblongifolius G. Thomas Robbins 1943-5-23 1084 El Dorado 3 mi e Camino (canyon slope above North Fork Webber Creek); North Fork Webber Creek 914 Comment
  SEINET3694381 Image available Lotus oblongifolius var. torreyi G. Thomas Robbins 1943-6-5 1655 El Dorado North Fork Webber Creek, 3 mi E of Camino 975 Comment
  SEINET3694460 Image available Lotus pinnatus G. Thomas Robbins 1944-6-18 1715 El Dorado Sly Park, 5 miles S of Pollock Pines 1006 Comment
  UC747247  Lotus pinnatus G. Thomas Robbins 1944-6-18 1715 El Dorado 5 mi s Pollock Pines; Sly Park 1005 Comment
  JEPS25107  Lotus scoparius G. Thomas Robbins 1959-4-12 3983 Contra Costa about 0.5 mi sw junction of Hoffmann Blvd. and S. 25th St. 6 Comment
  JEPS21976  Lotus tenuis G. Thomas Robbins 1958-5-24 3837 Contra Costa at corner of S. 28th St. and Hoffman Blvd.; Richmond Comment
  JEPS25100  Lunaria annua G. Thomas Robbins 1959-4-5 3969 Alameda n. edge of Montclair District Oakland (Swainland Rd.); Oakland-Berkeley Hills, , Montclair District Comment
  UC907702  Lupinus albifrons G. Thomas Robbins 1943-6-5 1653 El Dorado 3 mi e Camino (slope above North Fork Webber Creek); North Fork Webber Creek, e of Camino 1036 Comment
  CAS-BOT-BC201381  Lupinus albifrons var. albifrons G. Thomas Robbins 1945-4-22 1860 El Dorado 3 mi. e. of Shingle Springs 457 Comment
  CAS-BOT-BC201382  Lupinus albifrons var. albifrons G. Thomas Robbins 1943-6-5 1653 El Dorado Above North Fork Webber Creek, 3 mi. e. of Camino 1036 Comment
  UC1084380  Lupinus albifrons var. collinus G. Thomas Robbins 1937-4-11 79 San Mateo Skyline Boulevard near County Jail San Francisco (San Francisco); s of San Francisco Comment
  CAS-BOT-BC208852  Lupinus argenteus var. meionanthus G. Thomas Robbins 1945-7-8 2036 El Dorado Woods near Al Tahoe, Lake Tahoe. 1920 Comment
  JEPS25110  Lupinus bicolor G. Thomas Robbins 1959-4-5 3971 Alameda Vacant lot at corner of 61st St. and Shattuck Ave.; Oakland 33 Comment
  SBBG71262  Lupinus bicolor J. R. and R. C. Robbins 1930-3-28 Kern Kern Valley near Isabella Comment
  SBBG71263  Lupinus bicolor J. R. and R. C. Robbins 1930-3-28 Kern 2 mi from Isabella, Kern Valley Comment
  UC532189  Lupinus bicolor L. F. Robbins 1927-4-22 Sacramento on Freeport Boulevard Levee Sacramento River; Levee of Sacramento River Comment
  UC747292  Lupinus bicolor G. Thomas Robbins 1943-4-20 1014 El Dorado about 3 mi e Camino (on canyon slope above North Fork Webber Creek); above North Fork Webber Creek 975 Comment
  UC907707  Lupinus bicolor G. Thomas Robbins 1943-4-18 1003 Sacramento Carmichael District ca 15 mi ne Sacramento; ne of Sacramento Comment
  UC1057458  Lupinus bicolor G. Thomas Robbins 1937-4-11 103 San Mateo along roadside near Redwood City; near Redwood City Comment
  GH366821  Lupinus breweri G. T. Robbins 1945-7-8 2037 Unknown near Al Tahoe, Lake Tahoe 1920 Comment
  SBBG67092  Lupinus breweri J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  OBI12898  Lupinus formosus G. Thomas Robbins 1959-8-2 4121 Alameda Northern edge of IRvington, about 1/4 mi W of Stivers Pond 15 Comment
  UC1084419  Lupinus formosus var. formosus G. Thomas Robbins 1937-5-23 184 Sonoma between Santa Rosa and Sebastopol near Wright School Comment
  JEPS25244  Lupinus formosus var. formosus G. Thomas Robbins 1959-8-2 4121 Alameda at the northern edge of Irvington about one-fourth mi w Stivers Pond; w of Stivers Pond 15 Comment
  UC747243  Lupinus grayi G. Thomas Robbins 1943-6-13 1160 El Dorado along Park Creek Road w of its junction with the Plum Creek and Hazel Valley roads 1219 Comment
  UC532188  Lupinus microcarpus var. densiflorus L. F. Robbins 1928-4-15 Yolo Capay Valley Comment
  UC907703  Lupinus microcarpus var. densiflorus G. Thomas Robbins 1943-4-18 1004 Sacramento ca 15 mi ne Sacramento (Carmichael District) Comment
  JEPS25140  Lupinus microcarpus var. microcarpus G. Thomas Robbins 1959-5-16 4010 Contra Costa just n Pt. Orient, Richmond (western base of Potrero Hills, overlooking San Francisco Bay); overlooking San Francisco Bay, Potrero Hills, n of Pt. Orien Comment
  JEPS22000  Lupinus nanus G. Thomas Robbins 1958-4-12 3809 Alameda along MacArthur Blvd. near the corner Van Buren Ave., Oakland (Oakland); Oakland 15 Comment
  UC532192  Lupinus nanus L. F. Robbins 1928-3-18 Solano Putah Canyon Comment
  UC747246  Lupinus stiversii G. Thomas Robbins 1943-6-13 1163 El Dorado w of junction with the Plum Creek and Hazel Valley roads (along Park Creek road); along Plum Creek Road 1219 Comment
  JEPS25128  Lupinus succulentus G. Thomas Robbins 1959-4-18 3993 Contra Costa road fill along Western Drive near and n Pt. Richmond (western base of Potrero Hills, Richmond); Richmond, n of Pt. Richmond, western base Potraro Hills 4 Comment
  SJSU9921  Luzula comosa J. A. Robbins 1970-4-11 42 Santa Clara hillslope above Guadalupe Creek near junction with Rincon Creek E slope Santa Cruz Mts Comment
  UC747498  Luzula macrantha G. Thomas Robbins 1944-6-3 1649 El Dorado Along U.S. Highway 50 ca 3 mi E of Camino 1036 Comment
  UC907723  Luzula macrantha G. Thomas Robbins 1945-6-23 2008 El Dorado On Canyon slope above North Fork Webber Creek, ca. 3 mi E of Camino 975 Comment
  OBI21194  Luzula macrantha G. Thomas Robbins 1959-4-18 3987 Contra Costa Partial shade of Baccharis pilularis var. consanguinea at edge of Juncus effusus meadow overlooking San Pablo Bay, about 1/2 mile east of Pt. San Pablo, Richmond 8 Comment
  OBI9182  Lycium andersonii G. Thomas Robbins, Rimo Bacigalupi 1952-4-20 3451 San Luis Obispo Elkhorn Plain, 16 mi NNW of Kern County line 732 Comment
  UC907608  Madia elegans G. Thomas Robbins 1945-6-17 1981 El Dorado near Baltic Peak (above Camp Creek) 1005 Comment
  CAS-BOT-BC342741  Madia elegans G. Thomas Robbins 1943-10-16 1401 El Dorado At Institute of Forest Genetics, 3 mi. e. of Placerville 762 Comment
  UCD134240  Madia elegans Robbins; Raynor 1943-6-1 s.n. Butte Feather River Canyon near Pulga. Comment
  CAS-BOT-BC344425  Madia exigua G. T. Robbins 1939-5-29 s.n. Monterey Frances Simes Hastings Natural History Reservation, upper Carmel Valley about 2 miles northeast of Jamesburg Comment
  POM308654  Madia exigua G. Thomas Robbins 1939-5-29 s.n. Monterey Francis Simes Hastings Natural History Reservation, upper Carmel Valley about 2 miles northeast of Jamesburg Comment
  JEPS21969  Madia gracilis G. Thomas Robbins with S. Galen Smith 1958-6-2 3848 A Contra Costa just e Hercules city boundary (grassy slope along Franklin Canyon Road (State Hwy 4) s and above Refugio Valley) 18 Comment
  UC907755  Madia gracilis G. Thomas Robbins 1943-6-21 1208 El Dorado 3 mi e Placerville (near Institute of Forest Genetics) 762 Comment
  CAS-BOT-BC342907  Madia gracilis G. Thomas Robbins 1943-6-5 1129 El Dorado On canyon slope above North Fork Webber Creek, about 3 mi. e. of Camino 975 Comment
  JEPS21968  Madia sativa G. Thomas Robbins with S. Galen Smith 1958-6-2 3848 B Contra Costa along Franklin Canyon Road (State Hwy 4) south and above Refugio Valley (just e of Hercules city boundary, around edge of earth dump on grassy slope) 18 Comment
  UCD134341  Madia sativa G. Thomas Robbins; S. Galen Smith 1958-6-2 3848 B Contra Costa Along Franklin Canyon Road (State Highway 4) south and above Refugio Valley just east of Hercules city boundary. 18 Comment
  GH414725  Madia yosemitana G. T. Robbins 1943-4-15 997 Unknown North Fork Webber Creek, about 3 miles east of Camino 975 Comment
Read comments
Apr 11 2013
  UCD139073  Maianthemum racemosum W. W. Robbins 1928-4-29 989 Sacramento American River. Comment
  CAS-BOT-BC510741  Maianthemum racemosum subsp. amplexicaule G. Thomas Robbins 1943-5-23 1078 El Dorado Shady woods along North Fork Webber Creek, 3 mi. e. of Camino 914 Comment
  CAS-BOT-BC512746  Maianthemum stellatum G. Thomas Robbins 1945-6-17 1979 El Dorado Along Camp Creek near Baltic Peak 1005 Comment
  SBBG71553  Malacothamnus fasciculatus var. nuttallii R. Robbins 1947-8-14 Ventura Casitas Pass Comment
  SD45402  Malacothrix californica G. Thomas Robbins 1950-4-2 3304 Kern Above Kern River about 1 mile northeast of Isabella. 760 Comment
  JEPS7481  Malacothrix californica G. Thomas Robbins and Rimo Bacigalupi 1952-4-26 3464 Kern Hills immediately east of Kernville on dirt road to Weldon. 518 Comment
  UC747202  Malacothrix floccifera G. Thomas Robbins 1943-7-18 1279 El Dorado about 0.5 mi n Sly Park (between Pollock Pines and Sly Park) 914 Comment
  SD165326  Malosma laurina Jolynn Robbins 2004-7-5 11 San Diego Damon Lane County Park in south El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  UCD116693  Malva pseudolavatera G. Thomas Robbins 1958-4-19 3819 Alameda Along roadside west of Russell and about 1/4 mile east of Hayward Landing on San Francisco Bay. 1 Comment
  JEPS22014  Malvella leprosa G. Thomas Robbins 1958-6-14 3866 Alameda ca. 1.5 mi. n. Alvarado (along Mt. Eden Rd.) 1 Comment
  OBI12336  Malvella leprosa G. Thomas Robbins 1958-6-14 3866 Alameda Along borders of slough along Mt. Eden Rd, about 1.5 mi N of Alvarado 3 Comment
  UCD116702  Malvella leprosa G. Thomas Robbins 1958-7-26 3913 Alameda Bed of Southern Pacific railroad tracks at west end of Folger Ave., just above the Ashby Ave. underpass, Berkeley. Comment
  UC747041  Marah watsonii G. Thomas Robbins 1943-4-30 1057 El Dorado 3 mi e Placerville (near Institute of Forest Genetics) 762 Comment
  UC747040  Marah watsonii G. Thomas Robbins 1944-5-16 1606 El Dorado 3 mi e Placerville (hillside w Institute of Forest Genetics) 762 Comment
  UCD106743  Marina parryi W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SD158110  Marrubium vulgare Jolynn Robbins 2004-4-5 3 San Diego Damon Lane County Park in El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  JEPS25077  Marsilea vestita subsp. vestita G. Thomas Robbins with S. Galen Smith 1959-1-4 3957 Solano ca. 2 1/2 mi ne Vacaville (ca. 1/2 mi e of Winters rd junction, field just n of U.S. Hwy 40); Sacramento Valley 27 Comment
  UC907638  Melica californica G. Thomas Robbins 1943-6-10 1151 El Dorado about 3 mi e Camino; North Fork Webber Creek 975 Comment
  UC907662  Melica californica G. Thomas Robbins 1945-5-17 1913 El Dorado about 3 mi e Camino; North Fork Webber Creek 975 Comment
  UCD87188  Melica californica G. Thomas Robbins 1959-4-18 3994 Contra Costa At the western base of Potrero Hills, near and north of Pt. Richmond. Along Western Drive, Richmond. 7 Comment
  JEPS7478  Melica imperfecta G. Thomas Robbins and Rimo Bacigalupi 1952-4-26 3463 Kern about 3 mi w Democrat Springs road junction (slope above Kern River); Kern River Canyon 563 Comment
  JEPS15679  Melica subulata G. Thomas Robbins 1956-9-14 3780 El Dorado about 0.5 mi nw Echo Summit (along U.S. Hwy 50) 2225 Comment
  UC1084410  Melilotus indicus G. Thomas Robbins 1937-4-17 123 Contra Costa slopes near Point Richmond Comment
  UCD108086  Melilotus indicus Robbins and Raynor 1943-6-1 s.n. Modoc Near Alturas. Comment
  OBI13670  Melissa officinalis G. Thomas Robbins 1959-8-1 4115 Contra Costa Las Trampas Crk, about 1.5 mi SE of St. Marys College 183 Comment
  UC747559  Mentha canadensis G. Thomas Robbins 1943-7-10 1262 El Dorado about 3 mi e Camino (along bank of North Fork Webber Creek); bank of North Fork Webber Creek 914 Comment
  SD45207  Mentzelia albicaulis G. Thomas Robbins 1950-4-7 3325 Inyo About 5 miles south of Lone Pine 1067 Comment
  SBBG69341  Mentzelia pectinata J. R. Robbins 1930-4-16 Kern Grocery Grade; upper Cuyama Valley Comment
  UC7471  Mentzelia pectinata G. Thomas Robbins, Rimo Bacigalupi 1952-4-20 3446 Kern 2.3 mi w U.S. Highway (along road to Elkhorn Plain); Bitterwater Creek 518 Comment
  CAS-BOT-BC428467  Micranthes aprica G. Thomas Robbins 1945-7-1 2025 El Dorado Along trail to Grouse Lake, 1 1/2 mi. e. of Wrights Lake 2286 Comment
  UCD102826  Micranthes californica W. W. Robbins 1928-4-29 944 Unknown County Unknown: American River. Comment
  CAS-BOT-BC429291  Micranthes tolmiei G. Thomas Robbins 1944-7-29 1807 El Dorado Slope of Red Peak above Lake Schmidell, Rockbound Valley, Desolation Valley Wilderness Area 2651 Comment
  UC907711  Micropus amphibolus G. Thomas Robbins 1944-4-14 1507 Marin about 3 mi w Hamilton Field Air Base; Big Rock Ridge 60 Comment
  SBBG79652  Micropus californicus var. californicus R. C. and J. R. Robbins 1921-3-30 Santa Barbara Santa Cruz Island Comment
  UC747134  Micropus californicus var. californicus G. Thomas Robbins 1943-4-30 1055 El Dorado near Institute of Forest Genetics (3 mi e of Placerville) 762 Comment
  UC907710  Micropus californicus var. californicus G. Thomas Robbins 1944-4-14 1542 Marin low hills immediatly w Hamilton Field Air Base 152 Comment
  UC907778  Micropus californicus var. californicus G. Thomas Robbins 1944-5-15 1601 El Dorado 3 mi e Placerville (western boundary of Institute); Institute of Forest Genetics 762 Comment
  UC747186  Microseris douglasii subsp. douglasii G. Thomas Robbins with J. T. Howell 1945-5-9 1897 Marin 0.5 mi n Hamilton Field Air Base Comment
  SBBG64357  Microsteris gracilis J. R. and R. C. Robbins 1930-3-28 Kern 2 mi from Isabella, Kern Valley Comment
  UC747069  Mimulus angustatus G. Thomas Robbins 1945-6-17 2003 El Dorado Sly Park meadow 975 Comment
  RSA102192  Mimulus aurantiacus var. aurantiacus G. Thomas Robbins 1945-5-20 1936 El Dorado 3-4 mi. s. of Salmon Falls 183 Comment
  UC747086  Mimulus aurantiacus var. aurantiacus G. Thomas Robbins 1944-4-14 1512 Marin 2-3 mi w Hamilton Field Air Base (n slope of Big Rock Ridge) 152 Comment
  JEPS7775  Mimulus aurantiacus var. pubescens G. Thomas Robbins, Lawrence R. Heckard 1953-5-29 3533 Tulare 3 mi e Springville; Middle Fork of Tule River 457 Comment
  UC747090  Mimulus bicolor G. Thomas Robbins 1944-5-21 1616 El Dorado about 3 mi e Camino; North Fork Webber Creek 975 Comment
  UC747104  Mimulus bicolor G. Thomas Robbins 1943-4-14 992 El Dorado near Institute of Forest Genetics (above Smithflat) 822 Comment
  JEPS4724  Mimulus bigelovii var. cuspidatus G. T. Robbins and Rimo Bacigalupi with L. Constance, George Gillett and L. R. Heckard 1952-5-1 3498 Inyo Titus Canyon Death Valley National Monument, Grapevine Mts. 1524 Comment
  JEPS5580  Mimulus bigelovii var. cuspidatus G. T. Robbins and Rimo Bacigalupi with L. Constance, George Gillett and L. R. Heckard 1952-5-1 3513 Inyo Titus Canyon Death Valley National Monument, Grapevine Mts. 701 Comment
  JEPS5581  Mimulus bigelovii var. cuspidatus G. T. Robbins and Rimo Bacigalupi with L. Constance, George Gillett and L. R. Heckard 1952-5-1 3504 Inyo Titus Canyon Death Valley National Monument, Grapevine Mts. 1066 Comment
  JEPS7786  Mimulus bolanderi G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3544 Tulare about 1/4 mi e Milo junction (along road to Balch Park, 7.5 mi n of Springville) 548 Comment
  RSA152180  Mimulus bolanderi G. Thomas Robbins, L. R. Heckard 1953-5-30 3544 Tulare Along road to Balch Park, about one-fourth mile east of Milo junction and 7.5 miles north of Springville 549 Comment
  JEPS15546  Mimulus breweri G. Thomas Robbins with L. R. Heckard 1956-7-25 3704 Lake about 1 mi from summit Snow Mt. West (e base of ridge that forms a se extension of Snow Mt. West, pond which drains w into Bear Creek, a tributary of Rice Fork of Eel River); Snow Mt., Lake-Colusa County Boundary 1981 Comment
  UC747072  Mimulus breweri G. Thomas Robbins 1944-6-18 1729 El Dorado Capps Crossing North Fork Cosumnes River 1524 Comment
  JEPS22108  Mimulus cardinalis G. Thomas Robbins with H. G. Baker, G. Newcomb, and R. Ornduff 1958-7-30 3918 Tuolumne at bridge crossing 1.5 mi s Italian Bar; Fivemile Creek (tributary of South Fork Stanislaus River) 469 Comment
  UCD122478  Mimulus fremontii var. fremontii W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  JEPS7776  Mimulus geniculatus G. Thomas Robbins, Lawrence R. Heckard 1953-5-29 3534 Tulare 3 mi e Springville; Middle Fork of Tule River 457 Comment
  JEPS14538  Mimulus guttatus G. Thomas Robbins with Peter H. Raven 1956-4-29 3688 El Dorado 1.2 mi nw Somerset (Youngs) (near bridge crossing river); Canyon of North Fork Cosumnes River Comment
  SBBG66628  Mimulus guttatus J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd 2438 Comment
  POM181678  Mimulus guttatus L. F. Robbins 1927-5-6 s.n. El Dorado Near Placerville. Comment
  JEPS19393  Mimulus inodorus G. Thomas Robbins 1937-6-5 226 Sonoma 10 mi w Santa Rosa (Pitkin Ranch); Vine Hill region Comment
  UC747038  Mimulus kelloggii G. Thomas Robbins 1945-4-13 1839 El Dorado 2 1/2 mi e Placerville (above Smithflat) 762 Comment
  SBBG28907  Mimulus lewisii G. T. Robbins 1943-7-25 1325 El Dorado above S shore of Echo Lake 2194 Comment
  UC747116  Mimulus lewisii G. Thomas Robbins 1945-8-12 2133 El Dorado outlet streamlet of Star Lake (on trail to Freel Peak) 2804 Comment
  UC747128  Mimulus lewisii G. Thomas Robbins 1943-7-25 1325 El Dorado above s shore Echo Lake 2194 Comment
  RSA32397  Mimulus lewisii G. Thomas Robbins 1945-8-12 2133 El Dorado Star Lake, along trail to Freel Peak. 2805 Comment
  UC747077  Mimulus moniliformis G. Thomas Robbins 1944-6-18 1723 El Dorado along road to Capps Crossing; Camp Creek 1219 Comment
  SBBG66710  Mimulus montioides J. R. and R. C. Robbins 1932-6-7 Tulare Sequoia Nat Park 1950 Comment
  SBBG66711  Mimulus moschatus J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  JEPS15581  Mimulus nanus var. mephiticus G. Thomas Robbins 1956-9-9 3754 B Alpine 1/2 to 3/4 mi due w Carson Pass (above State Highway 88, lower slopes of peak); Red Lake Peak 2651 Comment
  JEPS15582  Mimulus nanus var. mephiticus G. Thomas Robbins 1956-9-9 3754 A Alpine 1/2 to 3/4 mi due w Carson Pass (above State Highway 88, lower slopes of peak); Red Lake Peak 2651 Comment
  JEPS7787  Mimulus nasutus G. Thomas Robbins 1953-5-8 3524 Calaveras 4.7 mi w, along Mokelumne Hill-Glencoe road Glencoe; Rich Gulch, Mokelumne Hill 457 Comment
  JEPS7791  Mimulus palmeri G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3545 Tulare 1/4 mi e Milo junction (on road to Balch Park, 7.5 mi n of Springville) 609 Comment
  RSA152171  Mimulus palmeri G. Thomas Robbins, L. R. Heckard 1953-5-30 3545 Tulare One fourth mile east of Milo junction and 7.5 miles north of Springville 610 Comment
  CAS-BOT-BC9650  Mimulus palmeri G. T. Robbins; L. R. Heckard 1953-5-30 3545 Tulare On road to Balch Park, one fourth mile east of Milo Junction and 7.5 miles north of Springville 609 Comment
  UC747101  Mimulus primuloides G. Thomas Robbins 1943-8-15 1345 El Dorado 2 1/2 mi ne Wrights Lake; Grouse Lake 2590 Comment
  UC747125  Mimulus primuloides G. Thomas Robbins 1945-8-12 2113 El Dorado 2-3 mi se Al Tahoe; Lake Valley 1920 Comment
  GH351770  Mimulus rubellus G. T. Robbins 1944-7-30 1823 Unknown Along Willow Flat Trail, about two miles north of Wrights Lake, nine miles north of U.S. Highway 50 Comment
  JEPS4659  Mimulus rubellus G. Thomas Robbins 1952-4-29 3477 San Bernardino between Mitchell Canverns and Gilroy Canyon (se slopes of mountains); Providence Mountains 1524 Comment
  SEINET3367731 Image available Mimulus rubellus G. Thomas Robbins 1944-7-30 1823 El Dorado Along Willow Flat Trail, 9 miles north of US Hwy 50, about 2 miles north of Wrights Lake 2286 Comment
  UC747119  Mimulus tilingii G. Thomas Robbins 1943-8-15 1342 El Dorado in bed of small inlet stream above Grouse Lake (2 1/2 mi ne of Wrights Lake) 2590 Comment
  UC747087  Mimulus torreyi G. Thomas Robbins 1943-7-6 1249 El Dorado 3 mi e Camino; C.C.C. Camp Snowline 1036 Comment
  RSA102189  Mimulus torreyi G. Thomas Robbins 1945-7-8 2060 El Dorado Along State Highway 89 near Fallen Leaf Lake. 1921 Comment
  JEPS19397  Mimulus tricolor G. Thomas Robbins 1938-5-19 264 Sonoma sw Santa Rosa (Stony Point Road, near The Lagunas) Comment
  JEPS7783  Mimulus viscidus var. compactus G. Thomas Robbins and Lawrence R. Heckard 1953-6-1 3563 Fresno 4.5 mi se of Auberry (Bald Mountain); Bald Mountain 914 Comment
  UC907706  Mimulus viscidus var. viscidus G. Thomas Robbins 1945-6-30 2014 El Dorado 1 mi n Rescue (along Deer Valley Rd) 396 Comment
  RSA102190  Mimulus viscidus var. viscidus G. Thomas Robbins 1945-6-30 2014 El Dorado Along Deer Valley Road, 1 mi. n. of Rescue. 396 Comment
  CAS-BOT-BC174681  Minuartia cismontana G. Thomas Robbins 1943-4-28 1043 El Dorado At Institute of Forest Genetics, 3 mi. e. of Placerville 762 Comment
  UC746830  Minuartia douglasii G. Thomas Robbins 1944-5-21 1623 El Dorado near Eight Mile House (about 2 mi e of Camino); North Fork Webber Creek 914 Comment
  UC746831  Minuartia douglasii G. Thomas Robbins 1944-4-14 1515 Marin 2-3 mi w Hamilton Field Air Base (n slope of ridge); Big Rock Ridge 152 Comment
  CAS-BOT-BC388590  Minuartia douglasii G. Thomas Robbins 1944-5-21 1623 El Dorado On ridge above North Fork Webber Creek near Eight Mile House, about 2 mi/ e. of Camino 914 Comment
  GH376636  Minuartia nuttallii subsp. gracilis G. T. Robbins 1945-8-12 2130 Unknown Rocky slope near summit of Freel Peak 3322 Comment
  CAS-BOT-BC174760  Minuartia nuttallii var. gracilis G. Thomas Robbins 1945-8-12 2130 El Dorado Near summit of Freel Peak 3322 Comment
  GH363858  Mitella breweri G. T. Robbins 1945-7-8 2053 Unknown along Velma Lakes trail, above Eagle Lake, Desolation Valley Wilderness Area 2286 Comment
  UC747347  Mitella breweri G. Thomas Robbins 1943-6-27 1224 El Dorado near Echo Summit Pass 2286 Comment
  UC747357  Mitella breweri G. Thomas Robbins 1945-7-8 2053 El Dorado above Eagle Lake (along Velma Lakes trail); Desolation Valley Wilderness Area 2286 Comment
  RSA32399  Mitella breweri G. Thomas Robbins 1945-7-8 2053 El Dorado Along Velma Lakes Trail. Above Eagle Lake. Desolation Valley Wilderness Area. 2287 Comment
  JEPS4643  Mohavea breviflora G. T. Robbins and Rimo Bacigalupi with L. Constance, George Gillett and L. R. Heckard 1952-5-1 3503 Inyo Death Valley National Monument, Titus Canyon Titus Canyon; Death Valley National Monument, Titus Canyon 1066 Comment
  JEPS25282  Mollugo verticillata G. Thomas Robbins with Robert Ornduff and Howard Whisler 1959-10-25 4171 San Joaquin 1/2 mi w of Stanislaus County line (3 1/2 mi e of Farmington, bed of Duck Creek, along Hwy 4, in the first foothills of Sierra Nevada); Sierra Nevada, Duck Creek 42 Comment
  JEPS8225  Mollugo verticillata G. Thomas Robbins with D. M. Post, J. W. Dawson, and P. H. Raven 1954-9-3 3649 Merced just e of the bridge crossing the San Joaquin River (on road from Newman junction to Livingston) 15 Comment
  CAS-BOT-BC219956  Monardella breweri subsp. lanceolata G. Thomas Robbins 1943-7-6 1244 El Dorado At C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  GH400531  Monardella breweri subsp. lanceolata G. T. Robbins 1943-7-6 1244 Unknown at C. C. C. Camp Snowline, three miles east of Camino 1036 Comment
  UC747583  Monardella breweri subsp. lanceolata G. Thomas Robbins 1943-7-6 1244 El Dorado At C. C. C. Camp Snowline, 3 mi E of Camino 1036 Comment
  SBBG71994  Monardella odoratissima subsp. pallida J. R. and R. C. Robbins 1932-7-18 El Dorado Lake Tahoe, W side Comment
  RSA32361  Monardella odoratissima subsp. pallida G. Thomas Robbins 1943-7-25 1331 El Dorado Shady Red Fir woods along roadside about 1 mi. S of Echo Lake 2195 Comment
  GH400634  Monardella sheltonii G. T. Robbins 1943-7-6 1245 Unknown at C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  JEPS22062  Monardella undulata G. Thomas Robbins with S. Galen Smith 1958-7-8 3895 Marin 2 mi n of road to Drakes Beach (along Sir Francis Drake Highway); Point Reyes Peninsula Comment
Read comments
Sep 4 2013
  UC747582  Monardella villosa subsp. villosa G. Thomas Robbins 1943-7-6 1245 El Dorado 3 mi E of Camino (at C.C.C. Camp Snowline) 1036 Comment
  JEPS7798  Monolopia lanceolata G. Thomas Robbins and Rimo Bacigalupi 1952-4-20 3458 San Luis Obispo southernmost end of plain just before descent into Cuyama Valley (about 4 mi from Kern County line); Carrizo Plain 868 Comment
  RSA152169  Monolopia lanceolata G. Thomas Robbins, Rimo Bacigalupi 1952-4-20 3458 San Luis Obispo Southernmost end of Carrizo Plain, just before descent into Cuyama Valley, about 4 miles from Kern County line 869 Comment
  JEPS4776  Monolopia major G. Thomas Robbins 1940-3-16 282 Alameda near Alameda-San Joaquin Co. line; Corral Hollw 259 Comment
  JEPS8041  Monoptilon bellioides G. Thomas Robbins with R. Bacigalupi, L. Constance, G. W. Gillett, and L. R. Heckard 1952-5-1 3486 Inyo 8.8 mi s Shoshone; McLain Park 426 Comment
  JEPS15545  Montia chamissoi G. Thomas Robbins with L. R. Heckard 1956-7-25 3703 Lake se extension of Snow Mountain, about 1/2 mi airline from its summit, (w into headwaters of Bear Creek, a tributary of Rice Fork of Eel River Snow Mountain 1981 Comment
  JEPS7969  Montia fontana G. Thomas Robbins, Peter H. Raven 1954-7-27 3637 Tulare Sequoia National Park, Crabtree Meadows Crabtree Meadows; Sequoia National Park, Crabtree Meadows 3139 Comment
  UC746848  Montia parvifolia G. Thomas Robbins 1944-6-18 1725 El Dorado along Camp Creek near road to Capps Crossing; Camp Creek 1219 Comment
  UC746854  Montia parvifolia G. Thomas Robbins 1944-7-30 1817 El Dorado about 1/4 mi w of Rockbound Pass (Desolation Valley Wilderness Area); Desolation Valley Wilderness Area 2590 Comment
  JEPS25104  Muilla maritima G. Thomas Robbins 1959-4-11 3979 Alameda field about 1/4 mi n west end of Depot Road (adjacent to (just e of) the American Salt Co. evaporating ponds along shore of bay, about 1 3/4 mi nw of Mt. Eden and 3/4 mi s of Russell); shore of San Francisco Bay 1 Comment
  SEINET3243526  Muilla maritima G. Thomas Robbins, Rimo Bacigalupi 1952-1 3460 Kern Near base of Pyramid Hills along State Highway 33, (south of Devils Den,) near its junction with Kern Co. route 116 146 Comment
  CAS-BOT-BC101802  Myrica hartwegii G. Thomas Robbins 1945-6-17 1983 El Dorado along Camp Creek, near Baltic Peak 1036 Comment
  SEINET6688438 Image available Myrica hartwegii G. Thomas Robbins 1945-1 1983 El Dorado Along Camp Creek, near Baltic Peak 975 Comment
  SBBG65096  Nama demissa J. R. and R. C. Robbins 1930-3-29 Los Angeles Antelope Valley Comment
  JEPS7445  Nassella cernua G. Thomas Robbins and Rimo Bacigalupi 1952-4-15 3417 Kern beaten ground at edge State Highway 41 (4.5 mi w of San Luis Obispo Co. line, slopes of ridge, w edge of valley, extreme nw corner of Kern Co.); McClure Valley, Avenal Ridge, Cottonwood Canyon 365 Comment
  RSA46772  Nasturtium officinale G. Thomas Robbins 1944-5-16 1610 El Dorado N Fork Webber Creek, 3 miles E of Camino 915 Comment
  UC907781  Navarretia capillaris G. Thomas Robbins 1944-7-28 1781 El Dorado about 1/4 mi w and below Rockbound Pass (along Willow Flat Trail, Desolation Valley Wilderness Area); Desolation Valley Wilderness Area, below Rockbound Pass 2438 Comment
  JEPS15007  Navarretia divaricata G. Thomas Robbins 1944-6-11 1672 El Dorado 203 mi ne Riverton (along Ice House Road) 1219 Comment
  UC913456 Image available Navarretia divaricata G. Thomas Robbins 1944-6-11 1672 El Dorado Ice House, 2-3 miles northeast of Riverton. Comment
  JEPS15006  Navarretia filicaulis G. Thomas Robbins 1943-6-22 1209 El Dorado 3 mi e Placerville (at w edge of Institute Of Forest Genetics) 792 Comment
  SEINET8729364 Image available Navarretia filicaulis G. Thomas Robbins 1943-1 1209 El Dorado At western edge of Institute of Forest Genetics, 3 miles east of Placerville Comment
  UC913414  Navarretia filicaulis G. Thomas Robbins 1943-6-22 1209 El Dorado 3 mi e Placerville (at w edge of Institute of Forest Genetics) 792 Comment
  UC913398  Navarretia intertexta G. Thomas Robbins 1944-6-18 1722 El Dorado 5 mi s Pollock Pines; Sly Park 975 Comment
  UC913407  Navarretia intertexta G. Thomas Robbins 1944-7-6 1760 El Dorado 5 mi s Pollock Pines; Sly Park 975 Comment
  UC913409  Navarretia intertexta G. Thomas Robbins 1943-6-5 1126 El Dorado ca 3 mi e Camino (canyon slope above North Fork Webber Creek) 1005 Comment
  UC913410  Navarretia intertexta G. Thomas Robbins 1944-7-6 1761 El Dorado 5 mi s Pollock Pines; Sly Park 975 Comment
  UCR143527  Navarretia intertexta G. Thomas Robbins 1944-7-6 1760 El Dorado Sierra Nevada Mtns., Sly Park, 5 mi south of Pollock Pines 976 Comment
  UC913385  Navarretia intertexta G. Thomas Robbins 1943-6-2 1108 El Dorado e and above Smith Flat Comment
  JEPS7950  Navarretia intertexta subsp. propinqua G. Thomas Robbins and Lawrence R. Heckard 1953-6-1 3572 Madera 2.7 mi e Raymond (along road to Coarsegold) 274 Comment
  UC913382  Navarretia intertexta subsp. propinqua G. Thomas Robbins 1945-9-24 2148 Lassen along Susanville to Pittville highway; Lassen National Forest 1737 Comment
  RSA114018  Navarretia leptalea G. Thomas Robbins 1944-7-30 1821 El Dorado along Willow Creek Trail, about 2 miles north of Wright Lake 2439 Comment
  RSA84879  Navarretia leptalea G. Thomas Robbins 1944-6-27 1738 El Dorado Top of ridge above North Fork Webber Creek, about 3 miles east of Camino 976 Comment
  UC747613  Navarretia leptalea subsp. leptalea G. Thomas Robbins 1943-7-18 1271 El Dorado along Pleasant Valley Road near Sly Park; near Sly Park 914 Comment
  UC631637  Navarretia leucocephala subsp. bakeri G. Thomas Robbins 1937-5-23 186 Sonoma near Wright School Comment
  UCR143529  Navarretia prolifera G. Thomas Robbins 1943-6-13 1162 - El Dorado Sierra Nevada Mtns., along Park Creek Road near junction with Plum Creek and Hazel Valley roads (at General Land Office Survey Marker); extreme eastern boundary of Placerville [15'] Q. 1220 Comment
  SEINET8729371 Image available Navarretia prolifera G. Thomas Robbins 1943-1 1112 El Dorado Eddy Arboretum, Institute of Forest Genetics, 3 miles east of Placerville 823 Comment
  CAS-BOT-BC230531  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-2 1111 El Dorado At Civilian Conservation Corps Camp Snowline, 3 miles E of Camino 1036 Comment
  CAS-BOT-BC230532  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-13 1162 -A El Dorado Along Park Creek road near junction with Plum Creek and Hazel Valley roads (at General Land Office Survey Marker, extreme E boundary of Placerville Quadrangle) 1219 Comment
  JEPS30773  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-3 1112 El Dorado about 3 mi e Placerville; Institute of Forest Genetics Arboretum 822 Comment
  SEINET197486  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-2 1111 El Dorado Civilian Conservation Corps Camp Snowline, 3 miles east of Camino. Comment
  SEINET197685  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-13 1162 -A El Dorado Along Park Creek Road near Junction with Plum Creek and Hazel Valley roads (at General Land Office Survey Marker, extreme eastern boundary of Placerville Quadrangle. 1219 Comment
  UC913411  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-3 1112 El Dorado about 3 mi e Placerville (Eddy Arboretum, Institute of Forest Genetics) 822 Comment
  UCD39795  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-2 1111 El Dorado at CCC Camp Snowline, about 3 miles east of Camino. Comment
  RSA98664  Navarretia prolifera subsp. lutea G. Thomas Robbins 1943-6-13 1162 -a El Dorado Along Park Creek Road near jct with Plum Creek and Hazel Valley roads (at General Land Office Survey Marker); extreme eastern boundary of Placerville quad. 1220 Comment
  CAS-BOT-BC233558  Navarretia prolifera subsp. prolifera G. Thomas Robbins 1944-7-6 1759 El Dorado Along Iron Mountain Road, about 0.5 mile NE of Sly Park 975 Comment
  JEPS8058  Navarretia pubescens G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3540 Tulare about 0.25 mi e Milo junction (7.5 mi n of Springville, along road to Balch Park) 609 Comment
  JEPS8063  Navarretia pubescens G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3546 Tulare 5 mi nw Milo junction (slopes of Blue Ridge); Blue Ridge 731 Comment
  CAS-BOT-BC233597  Navarretia pubescens G. Thomas Robbins 1943-5-29 1104 El Dorado W edge, Institute of Forest Genetics, 3 miles E of Placerville 731 Comment
  JEPS19399  Navarretia squarrosa G. Thomas Robbins 1940-6-3 331 San Francisco Golden Gate Park San Francisco Comment
  UC631638  Navarretia squarrosa G. Thomas Robbins 1939-7-4 272 Sonoma near Graton Comment
  UC913386  Navarretia squarrosa G. Thomas Robbins 1940-6-3 331 San Francisco Golden Gate Park San Francisco Comment
  RSA98661  Navarretia squarrosa G. Thomas Robbins 1939-7-4 272 Sonoma Near Graton Comment
  JEPS30771  Navarretia viscidula G. Thomas Robbins 1938-6-23 270 Sonoma ca 10 mi w Santa Rosa (just e of marsh on Pitkin ranch); Vine Hill Region Comment
  UC631639  Navarretia viscidula G. Thomas Robbins 1938-6-23 270 Sonoma just e Pitkin Marsh; Vine Hill Region Comment
  UC913408  Navarretia viscidula G. Thomas Robbins 1944-6-15 1691 El Dorado 2-3 mi e Placerville (along U.S. Highway 50) 762 Comment
  JEPS15538  Nemacladus capillaris G. Thomas Robbins with L. R. Heckard 1956-7-25 3696 Colusa about 1.5 air mi se Snow Mt. summit (on ridge above Fouts Camp and along trail to Snow Mt, on Lake-Colusa county boundary); Snow Mt. 1920 Comment
  SEINET10464790  Nemacladus capillaris Robbins 1956-7-25 ROBBINS 3696 Lake Colusa-Lake County boundary; on ridge above Fouts Camp and along trail to Snow Mt. (about 1.5 airline miles southeast of summit) 1920 Comment
  UC907677  Nemacladus capillaris G. Thomas Robbins 1943-6-13 1169 El Dorado w of Park Creek rd junction with Plum Creek and Hazel Valley rds (along Park Creek rd) 1219 Comment
  SEINET10972228  Nemacladus glanduliferus var. orientalis Robbins 1952-4-27 ROBBINS 3472 San Bernardino On lava flow at south base of Mt. Pisgah Crater, about 14 miles west of Ludlow, Mojave Desert 640 Comment
  JEPS5244  Nemacladus orientalis G. Thomas Robbins with Lincoln Constance, George Gillett 1952-4-27 3472 San Bernardino 14 mi w Ludlow (s base of Mt. Pisgah Crater); Mojave Desert, Mt. Pisgah Crater 640 Comment
  SD51623  Nemacladus orientalis G. Thomas Robbins, Lincoln Constance, George Gillett 1952-4-27 3472 San Bernardino Southbase of Mount Pisgah Crater, Ca. 14 miles west of Ludlow, Mojave Desert 640 Comment
  SEINET1869519  Nemacladus orientalis G. Thomas Robbins, Lincoln Constance, George Gillett 1952-1 3472 San Bernardino On lava flow at south base of Mt. Pisgah Crater, about 14 miles west of Ludlow. 640 Comment
  SEINET3815152 Image available Nemacladus rigidus G. Thomas Robbins 1943-6-13 1169 El Dorado Along Park Creek road W of its junction with the Plum Creek and Hazel Valley roads 1219 Comment
  SD51686  Nemacladus rubescens G. Thomas Robbins, R. Bacigalupi, L. Constance, et al. 1952-5-1 3488 A Inyo McLain Park, 8.8 miles south of Shoshone. 424 Comment
  SEINET10461109  Nemacladus rubescens Robbins 1952-5-1 ROBBINS 3488 A Inyo McLain Park, 8.8 miles south of Shoshone 427 Comment
  OBI20998  Nemacladus sigmoideus G. T. Robbins, G. T. Robbins 1954-5-31 4528 Kern At N end of Walker Basin, at crossing of rd to Havilah 1036 Comment
  SEINET10460929  Nemacladus sigmoideus Robbins 1952-5-1 ROBBINS 3488 C Inyo Desert flats, McLain Park, 8.8 miles south of Shoshone 427 Comment
  JEPS7610  Nemacladus tenuis var. aliformis G. Thomas Robbins with R. Bacigalupi, L. Constance, G. W. Gillett, and L. R. Heckard 1952-5-1 3488 A Inyo 8.8 mi s Shoshone; McLain Park 426 Comment
  RSA32393  Nemophila heterophylla G. Thomas Robbins 1943-3-27 970 El Dorado Western edge of Institute of Forest Genetics above Smith Flat. 793 Comment
  UC698014  Nemophila heterophylla G. Thomas Robbins 1943-3-27 970 El Dorado western edge of Institute of Forest Genetics arboretum Institute of Forest Genetics arboretum 792 Comment
  UC747463  Nemophila heterophylla G. Thomas Robbins 1943-3-27 970 El Dorado above Smith Flat (near spring at western edge of Institute of Forest Genetics); western edge Institute of Forest Genetics, Smith Flat 792 Comment
  UC698055  Nemophila maculata G. Thomas Robbins 1944-4-30 1577 El Dorado 3 - 4 mi e Newtown (along South Fork Webber Creek); South Fork Webber Creek, e of Newtown 914 Comment
  UC700282  Nemophila maculata G. Thomas Robbins 1943-6-13 1172 El Dorado ca 2 mi w Park Creek (along road to Park Creek); w of Park Creek 1219 Comment
  UC700316  Nemophila maculata G. Thomas Robbins 1945-4-22 1851 El Dorado 2 - 2 1/2 mi e Shingle Springs; e of Shingle Springs 457 Comment
  UC700317  Nemophila maculata G. Thomas Robbins 1943-4-29 1049 El Dorado 3 mi e Camino (C.C.C. Camp Snowline); e of Camino 1036 Comment
  UC700319  Nemophila maculata G. Thomas Robbins 1944-6-17 1713 El Dorado along US Highway 50 ca 1 mi e Strawberry; e of Strawberry 1981 Comment
  UC747477  Nemophila maculata G. Thomas Robbins 1944-4-30 1577 El Dorado 3-4 mi e Newtown (along South Fork Webber Creek); along South Fork Webber Creek 914 Comment
  UC747482  Nemophila maculata G. Thomas Robbins 1945-4-22 1851 El Dorado 2 - 2 1/2 mi e Shingle Springs; e of Shingle Springs 457 Comment
  UC747483  Nemophila maculata G. Thomas Robbins 1944-6-17 1713 El Dorado along US Highway 50 ca 1 mi e Strawberry; e of Strawberry 1981 Comment
  UCSB5331  Nemophila menziesii Robbins, G. 1940-3-21 Sonoma At junction of Pleasant Avenue Road and Chalk Hill Road; 2-3 miles southeast of Windsor 91 Comment
  UC700287  Nemophila pedunculata G. Thomas Robbins 1943-4-1 978 El Dorado 3 mi e Camino (above North Fork Webber Creek); , e of Camino 1036 Comment
  UC700321  Nemophila pedunculata G. Thomas Robbins 1944-4-23 1567 El Dorado near South Fork American River (on bank of Iowa Creek); near South Fork American River, Iowa Creek 762 Comment
  UC747567  Nicotiana acuminata var. multiflora G. Thomas Robbins 1943-5-28 1094 El Dorado 3 mi e Placerville (immediately w of Institute of Forest Genetics) 762 Comment
  POM181662  Nicotiana glauca L. F. Robbins 1927-6-5 s.n. Yolo Near Winters. Comment
  UCD126748  Nicotiana obtusifolia W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC747515  Odontostomum hartwegii G. Thomas Robbins 1945-5-20 1918 El Dorado 3 mi. e. Rescue (along Placerville-Rescue Rd.) 457 Comment
  CAS-BOT-BC140163  Oemleria cerasiformis G. Thomas Robbins 1944-4-2 1493 El Dorado Above North Fork Webber Creek, ca. 3 mi. e. of Camino 914 Comment
  UC1084362  Oemleria cerasiformis G. Thomas Robbins 1937-3-26 25 Sonoma cliffs near Bodega Bay Comment
  UCSB2828  Oemleria cerasiformis Robbins, G. 1940-3-10 Contra Costa North slope of Grizzly Peak, Berkeley Hills 426 Comment
  JEPS21973  Oenanthe sarmentosa G. Thomas Robbins 1958-5-30 3845 Alameda ca. halfway between Mills College and Oak Knoll Naval Hospital Oakland (along Mountain Blvd.) 91 Comment
  UC1084460  Oenanthe sarmentosa G. Thomas Robbins 1937-6-5 222 Sonoma ca. 10 mi. w. Santa Rosa (Marsh on Pitkin Ranch, Vine Hill Region); Vine Hill region, Marsh on Pitkin Ranch Comment
  UC1084504  Oenothera deltoides subsp. howellii G. Thomas Robbins 1940-5-19 325 Contra Costa cliffs above river e Antioch; San Joaquin River Comment
  UCD116479  Oligomeris linifolia W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  JEPS7967  Oreostemma alpigenum var. andersonii G. Thomas Robbins and Peter H. Raven 1954-7-28 3639 Tulare upper reaches, in sedge meadows Crabtree Creek; Sequoia National Park, Crabtree Creek 1109 Comment
  GH1166416  Orobanche G. T. Robbins 1956-8-13 3730 Unknown San Francisco, near Lands End, just below Lincoln Park, San Francisco Comment
  UC747066  Orobanche bulbosa G. Thomas Robbins 1945-5-27 1952 El Dorado about 1 1/2 mi n of Pleasant Valley (along Camino-Pleasant Valley Road); Camino-Pleasant Valley Road 762 Comment
  CAS-BOT-BC502756  Orobanche bulbosa G. Thomas Robbins 1945-5-27 1952 El Dorado Along Camino-Pleasant Valley road, about 1.5 mi N of Pleasant Valley 762 Comment
  JEPS7452  Orobanche cooperi G. Thomas Robbins, Rimo Bacigalupi 1952-4-19 3427 San Bernardino about 4 mi w of Baker (along U.S. Highway 91, Mohave Desert); Mohave Desert 335 Comment
  UCD123193  Orobanche cooperi W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SEINET8853624 Image available Orobanche cooperi subsp. cooperi G. Thomas Robbins, Rimo Bacgialupi 1952-1 3427 San Bernardino along Highway 91 about 4 miles west of Baker, Mojave Desert 335 Comment
  CAS-BOT-BC499797  Orobanche corymbosa subsp. corymbosa G. Thomas Robbins 1956-9-9 3753 Alpine Above State Hwy 88, about 1/2 mi W of Carson Pass 2621 Comment
  JEPS15583  Orobanche corymbosa subsp. corymbosa G. Thomas Robbins 1956-9-9 3753 Alpine Above State Highway 88, about one-half mile west of Carson Pass. Comment
  UC747062  Orobanche fasciculata G. Thomas Robbins 1944-5-24 1632 El Dorado Near Easter boundary of Institute of Forest Genetics, 3 mi E of Placerville. Comment
  JEPS13899  Orobanche ramosa G. Thomas Robbins, Rimo Bacigalupi 1955-9-26 3663 Alameda ca. 2 mi. (airline) s.e. Alvarado (ca. 0.25 mi. s. of Lowry Rd. & Alameda Creek) Comment
  CAS-BOT-BC502927  Orobanche ramosa G. Thomas Robbins; Rimo Bacigalupi 1955-9-26 3663 Alameda About 1/4 mi S of Lowry Rd and Alameda Creek, about 2 mi (air) SE of Alvarado Comment
  CAS-BOT-BC502928  Orobanche ramosa G. Thomas Robbins; Rimo Bacigalupi 1955-9-26 3663 Alameda About 1/4 mi S of Lowry Rd and Alameda Creek, about 2 mi (air) SE of Alvarado Comment
  CAS-BOT-BC483757  Orobanche robbinsii G. Thomas Robbins 1956-8-13 3730 San Francisco Near Lands End, just below Lincoln Park, San Francisco 45 Comment
  JEPS7972  Orochaenactis thysanocarpha G. Thomas Robbins, Peter H. Raven 1954-7-26 3634 Tulare along John Muir Trail just s Sandy Meadow; Sequoia National Park, along John Muir Trail 3291 Comment
  UC747658  Orthilia secunda G. Thomas Robbins 1945-8-5 2092 El Dorado Lodgepole Pines near Rubicon Springs 1828 Comment
  UCD81549  Oryza sativa W. W. Robbins; W. D. Norton 1927-10-1 s.n. Yolo West of Davis. Comment
  JEPS14589  Osmorhiza berteroi G. Thomas Robbins 1956-5-10 3691 Alameda grassy slope in park w of Life Sciences Building; Berkeley, University of California campus Comment
  UC747419  Osmorhiza brachypoda G. Thomas Robbins 1944-6-7 1660 El Dorado ca 3 mi e Camino; North Fork Webber Creek 914 Comment
  JEPS15675  Oxypolis occidentalis G. Thomas Robbins 1956-9-14 3786 El Dorado along US Hwy 50 about 1/2 mi nw Echo Summit (edge of small stream) 2225 Comment
  JEPS5161  Oxystylis lutea G. T. Robbins and Rimo Bacigalupi with L. R. Heckard 1952-5-1 3483 San Bernardino ca. 10 mi. s. Ibex Pass summit (along CA Hwy. 127, near crossing over Amargosa R.) Comment
  UCD102573  Paeonia brownii W. W. Robbins 1941-6-8 s.n. El Dorado Lake Tahoe. Comment
  UC964809  Paeonia californica G. Thomas Robbins 1950-5-14 3354 Monterey slope above CA Hwy 1 about 5 mi s Hunter Light (between Lucia and Big Sur) 152 Comment
  UCD134899  Palafoxia arida W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC907615  Panicum acuminatum var. acuminatum G. Thomas Robbins 1943-6-10 1150 El Dorado about 3 mi e Camino; above North Fork Webber Creek 975 Comment
  JEPS19004  Panicum miliaceum G. Thomas Robbins 1957-10-19 3807 Alameda on Addison St. near the corner Milvia St.; Berkeley Comment
  JEPS22011  Parapholis incurva G. Thomas Robbins 1958-6-14 3869 Alameda sw Newark (near the end of Willow Road along the road leading w to Plummer Landing) 3 Comment
  UC907634  Parapholis incurva G. Thomas Robbins with J. T. Howell 1945-5-9 1888 Marin about 1/2 mi n Ignacio 0 Comment
  UC747424  Parvisedum pumilum G. Thomas Robbins 1943-4-28 1044 El Dorado 3 mi e of Placerville (at Institute of Forest Genetics); Institute of Forest Genetics 822 Comment
  JEPS25270  Paspalum distichum G. Thomas Robbins 1959-9-6 4157 Alameda in the bed of Alameda Creek on West Alquire Road near Valle Vista Bridge (1.6 mi sw of Mission Blvd. (State Highway 9)); sw of Mission Bay, bed of Alameda Creek Comment
  UCD81571  Paspalum distichum W. W. Robbins 1927-10-1 837 Sacramento Walnut Grove. Comment
  UCD88936  Paspalum distichum G. Thomas Robbins 1959-9-6 4157 Alameda Alameda Creek, near Valle Vista Bridge on west Alguire Road, 1.66 miles southwest of Mission Blvd. (State Highway 9.) Comment
  UCD120143  Pectocarya platycarpa W. W. Robbins 1939-12-24 s.n. San Diego southeastern part of county. Comment
  UC907789  Pectocarya pusilla G. Thomas Robbins 1944-4-30 1575 El Dorado 3-4 mi ne Newton (on canyon side above South Fork Webber Creek) 762 Comment
  UC747585  Pectocarya pusilla G. Thomas Robbins 1944-5-15 1605 El Dorado 3 mi e Placerville (slope w of Insitute of Forest Genetics) 762 Comment
  SBBG68687  Pedicularis groenlandica J. R. and R. C. Robbins 1932-7-16 Tuolumne Tuolumne Crk near Lodge 2743 Comment
  UCD137715  Pellaea mucronata var. californica W. W. Robbins 1928-4-29 946 Unknown American River. Comment
  CAS-BOT-BC265298  Penstemon davidsonii var. davidsonii G. Thomas Robbins 1945-8-12 2132 El Dorado On NW face of ridge between Freel Peak and Jobs Sister Peak 3200 Comment
  UC907686  Penstemon davidsonii var. davidsonii G. Thomas Robbins 1945-8-12 2132 El Dorado NW face of ridge between Freel Peak and Jobs Sister Peak 3200 Comment
  UC907687  Penstemon gracilentus G. Thomas Robbins 1945-8-12 2134 El Dorado along shore Star Lake (on trail to Freel Peak); along shore of Star Lake, on trail to Freel Peak 2804 Comment
  UC747108  Penstemon heterodoxus G. Thomas Robbins 1943-7-25 1306 El Dorado about 2 mi nw Echo Lake (along Desolation Valley Trail); along Desolation Valley trail, nw of Echo Lake 2438 Comment
  JEPS7777  Penstemon laetus subsp. laetus G. Thomas Robbins 1953-5-29 3537 Tulare 2.3 mi above Coffee Camp (7.7 mi e of Springville); above Coffee Camp, e of Springville 609 Comment
  UC747117  Penstemon laetus var. laetus G. Thomas Robbins 1943-6-13 1166 El Dorado along Park Creek Road w of its junction with the Plum Creek and Hazel Valley roads 1219 Comment
  JEPS25168  Penstemon newberryi var. newberryi G. Thomas Robbins 1959-6-10 4040 Siskiyou about one mi n of highway summit on U.S. 99 between Mt. Shasta and Weed (on w side of Black Butte); w side of Black Butte, btw Mt. Shasta (town) and Weed 1188 Comment
  UC747121  Penstemon newberryi var. newberryi G. Thomas Robbins 1943-7-25 1297 El Dorado crevices of granite boulders near Lake Le Conte (rocky slopes above Medley Lakes (reservoir)); Desolation Valley Wilderness Area 2438 Comment
  JEPS15552  Penstemon purpusii G. Thomas Robbins with L. R. Heckard 1956-7-25 3709 Colusa above Dark Hollow Creek (a trib. of Middle Fork Stony Creek, along trail due s of Snow Mt. East, at lower edge of cirque between Snow Mt. West and Snow Mt. East); Snow Mt. East, Dark Hollow Crk trib. Middle Fork Stony Creek 1981 Comment
  SBBG66606  Penstemon roezlii J. R. and R. C. Robbins 1932-7-14 Mariposa below Inspiration Pt 1524 Comment
  SBBG66609  Penstemon roezlii J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  SBBG66520  Penstemon speciosus R. C. Robbins 1932-7-18 El Dorado W side of Lake Tahoe Comment
  UCD124152  Penstemon thurberi W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD127854  Perideridia kelloggii W. W. Robbins 1941-8-8 s.n. Mendocino Round Valley. Comment
  UC746844  Perideridia lemmonii G. Thomas Robbins 1943-7-18 1275 El Dorado along Pleasant Valley Rd. near Sly Park 914 Comment
  SD187812  Peritoma arborea var. arborea Jolynn Robbins 2006-4-9 36 San Diego Damon Lane County Park in south El Cajon. N of the intersection of Fury Ln and Wieghorst Way. 68 Comment
  UCD134913  Perityle emoryi W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD117312  Petalonyx thurberi W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SBBG65069  Phacelia J. R. and R. C. Robbins 1930-3-29 Los Angeles Antelope Valley Comment
  UC1084444  Phacelia G. Thomas Robbins 1940-3-22 304 Sonoma along Guerneville rd ca 8 mi w Santa Rosa Comment
  JEPS25156  Phacelia californica G. Thomas Robbins with John Weiler 1959-5-23 4027 Contra Costa flats on w side San Francisco Bay, Richmond, Brooks Island Comment
  UC1084386  Phacelia californica G. Thomas Robbins 1937-4-11 92 San Mateo in field along road to Woodside above San Mateo Comment
  SD45364  Phacelia cicutaria var. cicutaria G. Thomas Robbins 1950-4-2 3298 Kern Above Kern River, ca. 1.0 mile northeast of Isabella. 762 Comment
  UCSB5358  Phacelia ciliata Robbins, G.; Bacigalupi, Rimo 1952-4-20 San Luis Obispo Southernmost end of Carrizo Plain, just before descent into Cuyama Valley, and about 4 miles from the Kern County line 868 Comment
  JEPS21994  Phacelia ciliata var. ciliata G. Thomas Robbins 1958-4-19 3815 Alameda field along Depot Rd just e junction with Clawiter Rd. (about 1/6 mi n of Mt. Eden Sta.) 7 Comment
  JEPS7763  Phacelia ciliata var. ciliata G. Thomas Robbins and Rimo Bacigalupi 1952-4-20 3457 San Luis Obispo about 4 mi from Kern County line (just before descent into Cuyama Valley, southernmost end of plain); Carrizo Plain 868 Comment
  OBI13839  Phacelia ciliata var. ciliata G. Thomas Robbins 1958-4-19 3815 Alameda Along Depot Rd, just e of jctn of Clawiter Rd and about 1/6 mi N of Mt Eden Sta 8 Comment
  UC1084500  Phacelia distans G. Thomas Robbins 1940-5-19 321 Contra Costa e Antioch (sand hills bordering river); San Joaquin River Comment
  UC700304  Phacelia distans G. Thomas Robbins 1944-4-13 1495 Marin ca 4 mi w Hamilton Field Air Base; Big Rock Ridge 487 Comment
  UCD120424  Phacelia distans L. F. Robbins 1929-3-27 s.n. Riverside Near Banning. Comment
  RSA152170  Phacelia fremontii G. Thomas Robbins, R. C. Bacigalupi 1952-4-20 3449 San Luis Obispo On Elkhorn Plain, 16 miles north-northwest of Kern county line. 732 Comment
  SBBG64932  Phacelia fremontii J. R. and R. C. Robbins 1930-3-28 Kern Kern Valley Comment
  SD45365  Phacelia fremontii G. Thomas Robbins 1950-4-7 3324 Inyo About 5 miles south of Lone Pine, in Larrea divaricata plain. 1067 Comment
  UC747468  Phacelia hastata subsp. compacta G. Thomas Robbins 1943-9-5 1377 El Dorado near summit Mt. Tallac 2956 Comment
  UC747476  Phacelia hastata subsp. compacta G. Thomas Robbins 1945-7-8 2042 El Dorado near Al Tahoe; Lake Valley 1920 Comment
  SBBG64982  Phacelia hydrophylloides J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UCD120600  Phacelia imbricata W. W. Robbins 1926-4-17 511 Nevada Grass Valley. Comment
  UC698011  Phacelia mutabilis G. Thomas Robbins 1943-7-25 1332 El Dorado along road to Echo Lake ca 1 mi n U.S. 50 2194 Comment
  UC698045  Phacelia mutabilis G. Thomas Robbins 1943-6-7 1134 El Dorado slope above river near China Flat (Sacramento Box Sawmill) (ca 4 mi s of Kyburg); Silver Fork American River 1371 Comment
  UC697960  Phacelia mutabilis G. Thomas Robbins 1943-7-25 1311 El Dorado along Desolation Valley trail above Tamarack Lake 2286 Comment
  JEPS8069  Phacelia purpusii G. Thomas Robbins and Lawrence R. Heckard 1953-5-31 3555 Tulare along State Hwy 65 0.6 mi sw Badger 914 Comment
  GH401023  Phacelia ramosissima G. T. Robbins 1945-8-12 2141 Unknown slopes west of High Meadow along trail to Freel Peak, SW of Lake Tahoe 2286 Comment
  CAS-BOT-BC154394  Phacelia ramosissima var. eremophila G. Thomas Robbins 1944-7-28 1787 El Dorado along Willow Flat Trail ca. 1/4 mi. w. of Rockbound Pass 2438 Comment
  CAS-BOT-BC154393  Phacelia ramosissima var. eremophila G. Thomas Robbins 1944-7-28 1772 El Dorado along Willow Flat Trail at Willow Flat, ca. 3 mi. NE of Wrights Lake 2286 Comment
  JEPS15697  Phacelia ramosissima var. montereyensis G. Thomas Robbins 1956-9-9 3760 Alpine above State Hwy 88 1/2 to 3/4 mi due w Carson Pass (lower s slopes of mt.); Red Lake Peak 2651 Comment
  UC700286  Phacelia ramosissima var. ramosissima G. Thomas Robbins 1944-7-28 1787 El Dorado along Willow Flat Trail ca 1/4 mi w Rockbound Pass 2438 Comment
  UC700301  Phacelia ramosissima var. ramosissima G. Thomas Robbins 1944-7-28 1772 El Dorado ca 3 mi ne Wrights Lake (along Willow Flat Trail); Willow Flat 2286 Comment
  UC700313  Phacelia ramosissima var. subglabra G. Thomas Robbins 1945-8-12 2141 El Dorado slopes w High Meadow (along trail to Freel Peak, sw of Lake Tahoe) 2286 Comment
  UC747466  Phacelia ramosissima var. subglabra G. Thomas Robbins 1945-8-12 2141 El Dorado slopes w High Meadow (along trail to Freel Peak, sw of Lake Tahoe) 2286 Comment
  SD45363  Phacelia vallis-mortae G. Thomas Robbins 1950-4-2 3305 Kern Along U.S. Highway 6 near and south of Freeman Junction, on Larrea divaricata plain. 1006 Comment
  UC907640  Phleum alpinum G. Thomas Robbins 1943-9-5 1389 El Dorado along Tahoe-Yosemite trail n and below Dicks Pass; below Dicks Pass 2895 Comment
  UC907648  Phleum pratense G. Thomas Robbins 1944-7-6 1756 El Dorado 5 mi s Pollock Pines; Sly Park Meadow 1005 Comment
  JEPS7958  Phlox speciosa subsp. occidentalis G. Thomas Robbins 1953-5-8 3527 Calaveras 2.5 mis West Point (near Sandy Gulch) 792 Comment
  RSA114104  Phlox speciosa subsp. occidentalis G. Thomas Robbins 1944-5-28 1644 El Dorado Along road to powerhouse, 4 to 5 miles northwest of Pollock Pines 915 Comment
  CAS-BOT-BC135134  Phoradendron juniperinum G. Thomas Robbins 1945-8-5 2096 El Dorado on open, granitic rock slopes along George-town, 4-5 mi E of Wentworth Springs 1981 Comment
  UC746873  Phoradendron juniperinum G. Thomas Robbins 1945-8-5 2096 El Dorado 4 - 5 mi. e. Wentworth Springs (along Georgetown Rd.) 1981 Comment
  CAS-BOT-BC141256  Phoradendron serotinum subsp. tomentosum G. Thomas Robbins 1943-10-28 1404 El Dorado along US Highway 50, 3 mi E of Placerville 762 Comment
  UC746872  Phoradendron villosum G. Thomas Robbins 1943-10-28 1404 El Dorado along U.S. Hwy. 50 3 mi. e. Placerville 762 Comment
  UCD81568  Phyla nodiflora var. reptans W. W. Robbins; W. D. Norton 1928-8-1 1422 Yolo near Clarksburg. Comment
  UC747665  Phyllodoce breweri G. Thomas Robbins 1943-7-25 1290 El Dorado above Medley Lakes (reservoir), Desolation Valley Wilderness Area Medley Lakes; Desolation Valley Wilderness Area 2590 Comment
  UCD81555  Physalis acutifolia W. W. Robbins; W. D. Norton 1927-10-1 s.n. Yolo West of Davis. Comment
  JEPS7789  Physalis crassifolia G. Thomas Robbins 1952-4-29 3482 San Bernardino s and e of Mitchell Ranch (Mitchell's Caverns) (e Mohave Desert); Mohave Desert, Providence Mountains Comment
  UCD126764  Physalis lancifolia W. W. Robbins; W. D. Norton 1927-10-1 825 Yolo West of Davis. Comment
  CAS-BOT-BC140542  Physocarpus capitatus G. Thomas Robbins 1943-6-29 1238 El Dorado Along North Fork Webber Creek, ca. 3 mi. e. of Camino 914 Comment
  CAS-BOT-BC76959  Pilularia americana G. Thomas Robbins; S. Galen Smith 1950-4-15 1905 Colusa Bear Valley Comment
  UC1101610  Pilularia americana G. Thomas Robbins and S. Galen Smith 1950-4-15 1905 Colusa Bear Valley Comment
  CAS-BOT-BC78281  Pinus attenuata G. Thomas Robbins 1944-3-19 1490 El Dorado On ridges and slopes immediately south and east of South Fork American River 914 Comment
  GH246923  Pinus attenuata G. T. Robbins 1944-3-19 1490 Unknown On ridges and slopes immediately s. & e. of South Fork American River along Michigan-Calif. Lumber Co. railway 914 Comment
  UC747598  Pinus attenuata G. Thomas Robbins 1944-3-19 1490 El Dorado immediately s and e along the Michigan-Calif. Lumber Co. railway South Fork American River; Michigan-Calif. Lumber Co. railway Comment
  UC747631  Pinus contorta subsp. murrayana G. Thomas Robbins 1943-6-27 1214 El Dorado ridge above Echo Summit Pass ca. 3/4 mi sw U.S. Highway 50 2438 Comment
  A246849  Pinus contorta var. murrayana G. T. Robbins 1943-6-27 1214 Unknown Ridge above Echo Summit Pass, ca. 3/4 mi. sw. of U.S. Highway 50 Comment
  UC972331  Pinus flexilis G. Thomas Robbins 1951-8-4 3407 Inyo rocky slopes above North Fork Bishop Creek (along Piute Pass Trail) 3048 Comment
  RSA32355  Pinus lambertiana G. Thomas Robbins 1943-6-20 1192 El Dorado Along road to P.G. & E. power house approximately 3 miles west of Forebay reservoir (near Pollock Pines). 976 Comment
  UC747630  Pinus monticola G. Thomas Robbins 1943-6-27 1212 El Dorado ridge above, 0.75 mi sw of U.S. Highway 50 Echo Summit pass 2438 Comment
  CAS-BOT-BC79009  Pinus ponderosa G. Thomas Robbins 1944-10-15 1834 El Dorado At C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  GH246887  Pinus ponderosa G. T. Robbins 1944-10-15 1834 Unknown At. C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  RSA32356  Pinus ponderosa G. Thomas Robbins 1944-1-8 1466 El Dorado Native tree of grounds of Institute of Forest Genetics, 3 miles east of Placerville. 823 Comment
  RSA41258  Pinus ponderosa G. Thomas Robbins 1944-10-15 1834 El Dorado At CCC Camp Snowlie, 3 mile east of Camino 1037 Comment
  UC747621  Pinus ponderosa G. Thomas Robbins 1944-10-15 1834 El Dorado 3 mi e Camino (C. C. C. Camp Snowline) 1036 Comment
  NY62305  Pinus ponderosa G. T. Robbins 1944-10-15 1834 El Dorado This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET3353243 Image available Pinus ponderosa G. Thomas Robbins 1944-1 1834 El Dorado CCC Camp Snowline, 3 mi. e. of Camino 1036 Comment
  UC747601  Pinus sabiniana G. Thomas Robbins 1944-10-26 1835 El Dorado on slope above Smith Flat 762 Comment
  JEPS15528  Piperia elegans G. Thomas Robbins 1956-8-13 3732 San Francisco near Lands End (just below Lincoln Park) 45 Comment
  UC746956  Piperia unalascensis G. Thomas Robbins 1943-6-13 1159 El Dorado w of junction Plum Creek and Hazel Valley roads (along Park Creek Road) 1219 Comment
  UC480692  Plagiobothrys fulvus L. F. Robbins 1928-4-20 Sacramento near Fair Oaks Comment
  UC747591  Plagiobothrys greenei G. Thomas Robbins 1943-4-18 1008 Sacramento near Carmichael (ca 15 mi ne Sacramento) Comment
  UC907752  Plagiobothrys hispidulus G. Thomas Robbins 1945-6-17 2001 El Dorado 5 mi s Pollock Pines (in bed of drying streamlet); Sly Park 1005 Comment
  UC907753  Plagiobothrys hispidus G. Thomas Robbins 1945-8-12 2112 El Dorado Lake Valley about 1 mi se Lake Tahoe; Lake Valley 1920 Comment
  UC1084415  Plagiobothrys nothofulvus G. Thomas Robbins 1937-4-11 102 San Mateo near Spring Valley Lakes (along road to Woodside) Comment
  UC747590  Plagiobothrys nothofulvus G. Thomas Robbins 1943-3-25 967 El Dorado 3 mi e Placerville (hillside near Institute of Forest Genetics) 762 Comment
  UC907691  Plagiobothrys reticulatus G. Thomas Robbins with J. T. Howell 1945-5-9 1876 Marin 1/2 mi n Hamilton Field Air Base 0 Comment
  GH420176  Plagiobothrys scouleri var. penicillatus G. T. Robbins 1944-6-18 1721 Unknown Sly Park, 5 mi. s. of Pollock Pines 1005 Comment
  UC1057462  Plagiobothrys stipitatus G. Thomas Robbins 1937-5-23 185 Sonoma near Wright School (along road between Santa Rosa and Sebastopol) Comment
  JEPS22058  Plantago coronopus G. Thomas Robbins 1958-7-13 3899 Contra Costa n end Berrellesa Street, Martinez; Carquinez Strait Comment
  JEPS14639  Plantago elongata G. Thomas Robbins 1955-6-29 3662 Alameda Berkeley Comment
  JEPS21225  Plantago elongata G. Thomas Robbins 1958-5-13 3831 Alameda Berkeley Comment
  JEPS21226  Plantago elongata G. T. Robbins 1958-5-21 3832 Alameda Berkeley Comment
  JEPS21229  Plantago elongata G. Thomas Robbins 1958-5-28 3840 Alameda Berkeley Comment
  JEPS21230  Plantago elongata G. Thomas Robbins 1958-5-28 3841 Alameda Berkeley Comment
  JEPS21231  Plantago elongata G. Thomas Robbins 1958-5-28 3842 Alameda Berkeley Comment
  JEPS21233  Plantago elongata G. Thomas Robbins 1958-6-30 3884 Alameda Berkeley Comment
  JEPS21234  Plantago elongata G. Thomas Robbins 1958-5-29 3844 Alameda Berkeley Comment
  JEPS21235  Plantago elongata G. Thomas Robbins 1958-6-4 3855 Alameda Berkeley Comment
  JEPS21236  Plantago elongata G. Thomas Robbins 1958-6-4 3856 Alameda Berkeley Comment
  JEPS21237  Plantago elongata G. Thomas Robbins 1958-6-6 3857 Alameda Berkeley Comment
  JEPS21239  Plantago elongata G. Thomas Robbins 1958-6-12 3862 Alameda Berkeley Comment
  JEPS22019  Plantago elongata G. Thomas Robbins with S. Galen Smith 1958-6-9 3860 San Mateo .12 mi w State Highway 1 (0.5 mi n of bridge crossing Pescadero Creek) Comment
  JEPS14540  Plantago erecta G. Thomas Robbins with Peter H. Raven 1956-4-28 3664 Contra Costa just s El Cerrito city limits (along Arlington Ave at Kenilworth Dr); Berkeley Hills 213 Comment
  JEPS14637  Plantago erecta G. Thomas Robbins 1955-6-4 3660 Marin s shore Rodeo Lagoon Comment
  JEPS21979  Plantago erecta G. Thomas Robbins 1958-5-10 3830 Alameda e of Oakland (along Pinehurst Road, about 0.5 mi s of summit where the road makes a sharp descent into San Leandro Creek) 213 Comment
  JEPS21999  Plantago erecta G. Thomas Robbins 1958-4-12 3810 Alameda Oakland, along Redwood Road, w slope of Oakland Hills Oakland Hills 259 Comment
  OBI11652  Plantago erecta G. Thomas Robbins 1958-5-9 3825 San Francisco Along the W side of Lake Merced Blvd. just S of the pedestrian causeway on the lake, San Francisco 8 Comment
  POM181672  Plantago erecta G. Thomas Robbins 1927-3-26 s.n. Yolo Canyon of Putah Creek. Comment
  SD188132  Plantago erecta Jolynn Robbins 2006-4-9 40 San Diego Damon Lane County Park in south El Cajon. N of the intersection of Fury Ln and Wieghorst Way. 68 Comment
  UC747044  Plantago erecta G. Thomas Robbins 1945-4-22 1840 El Dorado 2-3 mi nw Shingle Springs 457 Comment
  JEPS21982  Plantago erecta G. Thomas Robbins 1958-5-9 3827 San Francisco just s Fleishhacker Pool (and just e of Great Highway, about 0.1 mi inland from the ocean); San Francisco 7 Comment
  JEPS6358  Plantago erecta G. Thomas Robbins and Rimo Bacigalupi 1952-4-15 3414 Monterey between San Ardo and San Lucas (along U.S. Hwy 101) Comment
  RSA152196  Plantago erecta G. Thomas Robbins 1958-5-9 3824 San Francisco Along the west side of Lake Merced Bld (opposite Pacific Rod and Gun Club), southwest of Lake Merced, 0.2 mile south of junction with Skyline Blvd, San Francisco. 8 Comment
  JEPS22022  Plantago lanceolata G. Thomas Robbins with S. Galen Smith 1958-6-2 3854 Contra Costa Just east of crossing of Hastings Slough on road between Port Chicago and Avon Comment
  UCD124601  Plantago lanceolata Robbins; Raynor 1943-6-1 s.n. Plumas Belden. Comment
  OBI11633  Plantago maritima G. Thomas Robbins 1958-5-31 3846 Marin This site was only about 10-15 yds from low, sandy clay bluffs where var. californica, see Robbins 3847, was collected. Above SW edge of Rodeo Lagoon Comment
  UCD124622  Plantago maritima G. Thomas Robbins 1953-8-29 3617 San Mateo Just south of the Olympic Golf Club and the San Francisco City and County line. Comment
  JEPS14368  Plantago maritima var. californica G. Thomas Robbins 1955-6-4 3655 Marin nw of Rodeo Lagoon Comment
  JEPS21970  Plantago maritima var. californica G. Thomas Robbins 1958-5-31 3847 Marin near sw edge of Rodeo Lagoon Comment
  JEPS23827  Plantago maritima var. californica G. Thomas Robbins with John Weiler 1959-8-7 4140 San Luis Obispo 1.8 mi n Arroyo de la Cruz (5.6 mi s of the Monterey County line, w of State Highway 1) 15 Comment
  JEPS14372  Plantago maritima var. juncoides G. Thomas Robbins 1944-6-4 3658 Marin sw edge Rodeo Lagoon Comment
  JEPS21971  Plantago maritima var. juncoides G. Thomas Robbins 1958-5-31 3846 Marin sw edge Rodeo Lagoon Comment
  UCD124542  Plantago ovata var. fastigiata W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  JEPS21227  Plantago pusilla G. Thomas Robbins 1958-5-22 3833 Alameda Berkeley Comment
  JEPS19390  Plantago subnuda G. Thomas Robbins 1937-5-23 207 Sonoma about 10 mi w Santa Rosa (on Pitkin Ranch); Vine Hill Region Comment
  JEPS19391  Plantago subnuda G. Thomas Robbins with John Weiler 1937-6-5 220 Sonoma about 10 mi w Santa Rosa (on Pitkin Ranch); Vine Hill Region Comment
  JEPS22047  Plantago subnuda G. Thomas Robbins 1958-6-25 3880 Marin ne of Rodeo Lagoon; Fort Cronkhite Military Reservation 91 Comment
  JEPS15535  Plantago subnuda G. Thomas Robbins with J. T. Howell 1956-7-19 3693 San Francisco Golden Gate Park, around bank concourse San Francisco, Golden Gate Park Comment
  JEPS23824  Plantago subnuda G. Thomas Robbins with John Weiler 1959-8-7 4132 Monterey between Lopez Point and Cape San Martin (just below bridge crossing on State Highway 1, bank of Mill Creek); Mill Creek 12 Comment
  JEPS23826  Plantago subnuda G. Thomas Robbins with John Weiler 1959-8-7 4136 Monterey e of (directly opposite) Cape San Martin (along State Highway 1, about 0.4 mi s of Willow Creek crossing, 2.5 mi s of Pacific Valley School) 60 Comment
  OBI11625  Plantago subnuda G. Thomas Robbins, John Weiler 1959-8-7 4136 Monterey Along State hwy 1, directly opp (E of) Cape San Martin, about 0.4 mi S of Willow Crk crossing, 2.5 mi S of Pacific Valley School 61 Comment
  OBI11649  Plantago subnuda G. Thomas Robbins 1958-6-25 3880 Marin Fort Cronkhite Military Reservation N of Rodeo Lagoon 91 Comment
  UCD124564  Plantago subnuda G. Thomas Robbins 1953-8-29 3616 San Mateo Along State Highway 1, 1.5 - 2 miles south of San Francisco City and County line. Comment
  UCD124565  Plantago subnuda G. Thomas Robbins; John Weiler 1959-8-7 4136 Monterey along State Highway 1, directly opposite (east of) Cape San Martin, about 0.4 mile south of Willow Creek crossing, 2.5 miles south of Pacific Valley School. 60 Comment
  UC1057476  Platanthera leucostachys G. Thomas Robbins 1937-5-23 208 Sonoma about 10 mi w Santa Rosa (on Pitkin Ranch, Vine Hill region); Vine Hill Comment
  UC565373  Platanthera leucostachys G. Thomas Robbins 1937-6-5 217 Sonoma about ten mi w Santa Rosa; Vine Hill Region, Pitkin Ranch Comment
  UC746957  Platanthera sparsiflora G. Thomas Robbins 1943-6-27 1225 El Dorado near Echo Summit Pass 2286 Comment
  UC1084428  Platanus racemosa G. Thomas Robbins 1940-3-16 279 Alameda bed of creek near Tesla (w end of Hollow); Corral Hollow, Corral Hollow Creek 213 Comment
  SBBG70057  Platystemon californicus R. C. and J. R. Robbins 1921-1 Santa Barbara Los Olivos Comment
  UC1057447  Platystemon californicus G. Thomas Robbins 1937-4-11 95 San Mateo along road to Woodside near Spring Valley Lakes; near Springs Valley Lakes Comment
  UC747393  Platystemon californicus G. Thomas Robbins 1944-4-14 1530 Marin about 3 mi w Hamilton Field Air Base (near summit of Big Rock Ridge); near summit of Big Rock Ridge 304 Comment
  SBBG70056  Platystemon californicus J. R. and R. C. Robbins 1930-3-29 Los Angeles upper Antelope Valley Comment
  UC907732  Plectritis brachystemon G. Thomas Robbins 1945-5-27 1957 El Dorado about 1 mi n of Pleasant Valley 762 Comment
  JEPS5139  Plectritis ciliosa subsp. ciliosa G. Thomas Robbins 1953-5-7 3515 C Calaveras about 2 mi s of Vallecito (on road to Columbia, on Table Mountain); Table Mountain 487 Comment
  UC747112  Plectritis ciliosa subsp. ciliosa G. Thomas Robbins 1944-4-30 1576 El Dorado 3-4 mi ne of Newtown (above South Fork Webber Creek) 914 Comment
  RSA32392  Plectritis ciliosa subsp. ciliosa G. Thomas Robbins 1943-4-21 1018 El Dorado At western edge of grounds of Institute of Forest Genetics. 732 Comment
  UC747031  Plectritis ciliosa subsp. ciliosa G. Thomas Robbins 1943-4-21 1018 El Dorado at w edge of grounds of Institute of Forest Genetics Institute of Forest Genetics 731 Comment
  JEPS14549  Plectritis macrocera G. Thomas Robbins with Peter H. Raven 1956-4-28 3673 El Dorado just s of crossing of South Fork American River (, along Placerville-Georgetown Road, in Big Canyon); Big Canyon 292 Comment
  JEPS7455  Pleuraphis rigida G. Thomas Robbins and Rimo Bacigalupi 1952-4-19 3432 San Bernardino along U.S. Highway 91 about one mi w Cronese (Cronese Valley); Mohave Desert 396 Comment
  CAS-BOT-BC453482  Pleuricospora fimbriolata G. Thomas Robbins 1943-6-20 1188 El Dorado Near head of Long Canyon, 2--3 mi. W of Pollock Pines 975 Comment
  UC747679  Pleuricospora fimbriolata G. Thomas Robbins 1943-6-20 1188 El Dorado 2-3 mi w of Pollock Pines (near head of Long Canyon) 975 Comment
  JEPS25103  Pleuropogon californicus G. Thomas Robbins 1959-4-11 3978 Alameda 1/4 mi n of west end of Depot Road (along shore of San Francisco Bay, adjacent to (just e of) the American Salt Co., about 1 3/4 mi nw Mt. Eden, about 3/4 mi s Russell); San Francisco Bay 1 Comment
  UC25113  Pleuropogon californicus G. Thomas Robbins with Hsuan Keng and Erika Amstutz 1959-4-3 3967 Sonoma ne of Santa Rosa (Rincon Valley, along Montecito Road, w of Middle Rincon Road); Rincon Valley 86 Comment
  UC907654  Pleuropogon californicus G. Thomas Robbins with J. T. Howell 1945-5-9 1874 Marin 1/2 mi n of Hamilton Field Air Base Comment
  UCD90172  Pleuropogon californicus var. californicus G. Thomas Robbins 1959-4-11 3978 Alameda About 1/4 mile north of the west end of Depot Road, adjacent to (just east of) the American Salt Co. Along the shore of San Francisco Bay, about 1 and 3/4 miles northwest of Mt. Eden and about 3/4 mile south of Russell. 1 Comment
  JEPS21996  Poa annua G. Thomas Robbins 1958-4-19 3813 Alameda ca 1/6 mi n Mt Eden Station (along Depot Rd, just e of junction of Clawiter Rd) 7 Comment
  UCD90379  Poa annua G. Thomas Robbins 1958-4-19 3813 Alameda East of junction of Clawiter Rd. and about 1/6 mile north of Mt. Eden Sta. 7 Comment
  UC964808  Poa secunda subsp. secunda G. Thomas Robbins 1950-4-2 3302 Kern ca 1 mi ne Isabella (above Kern River) 762 Comment
  SEINET196415  Podistera nevadensis G. Thomas Robbins 1945-8-12 2124 El Dorado Near summit of Freel Peak. 3322 Comment
  JEPS8284  Pogogyne douglasii G. Thomas Robbins and Lawrence L. Heckard 1953-6-1 3571 Madera 2.7 miles east of Raymond along road to Coarsegold 274 Comment
  RSA152175  Pogogyne douglasii G. Thomas Robbins, Lawrence R. Heckard 1953-6-1 3571 Madera 2.7 miles east of Raymond along road to Coarsegold 274 Comment
  SBBG58184  Polemonium californicum J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  CAS-BOT-BC231319  Polemonium pulcherrimum G. Thomas Robbins 1943-9-5 1383 El Dorado Near summit of Dicks Peak; Desolation Valley Wilderness Areas 3048 Comment
  UC747619  Polemonium pulcherrimum subsp. pulcherrimum G. Thomas Robbins 1943-9-5 1383 El Dorado near summit of Dicks Peak 3048 Comment
  GH347779  Polygala cornuta G. T. Robbins 1943-7-8 1254 Unknown at C.C.C. Camp Snowline, three miles east of Camino 1036 Comment
  CAS-BOT-BC167567  Polygala cornuta var. cornuta G. Thomas Robbins 1943-7-8 1254 El Dorado At C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  CAS-BOT-BC167568  Polygala cornuta var. cornuta G. Thomas Robbins 1943-5-29 1103 El Dorado Near Institute of Forest Genetics, 3 mi. e. of Placerville 762 Comment
  JEPS22106  Polygala cornuta var. cornuta G. Thomas Robbins with H. G. Baker, G. Newcomb, and R. Ornduff 1958-7-30 3916 Tuolumne near Mountain Lily Mine (slopes above creek, 1.5 mi s of Italian Bar); Fivemile Creek (a tributary of South Fork Stanislaus River) 472 Comment
  SEINET1004843  Polygala cornuta var. cornuta G. Thomas Robbins 1943-1 1254 El Dorado At CCC Camp Snowline, 3 mi E of Camino 1036 Comment
  UC747315  Polygala cornuta var. cornuta G. Thomas Robbins 1943-7-8 1254 El Dorado 3 mi e Camino; C.C.C. Camp Snowline 1036 Comment
  CAS-BOT-BC170369  Polygala cornuta var. cornuta G. Thomas Robbins; H. G. Baker; G. Newcomb; R. Ornduff 1958-7-30 3916 Tuolumne On openly wooded slope above Fivemiel Creek, a tributary of South Fork Stanislaus River, near Mountain Lily Mine, 1.5 miles southwest of Italian Bar 472 Comment
  JEPS22110  Polygonum amphibium var. emersum G. Thomas Robbins 1958-8-9 3920 Alameda small stream crossing Boyce Rd 0.1 mi n road junction to Newark Substation (of P.G. & E.) (about 3 mi sw of Newark) Comment
  UC746894  Polygonum bistortoides G. Thomas Robbins 1943-8-15 1350 El Dorado at edge of creek below Grouse Lake (2 1/2 mi ne of Wrights Lake); Grouse Creek 2590 Comment
  CAS-BOT-BC414376  Polygonum californicum G. Thomas Robbins 1945-6-9 1974 El Dorado Above North Fork Webber Creek, about 3 mi. e. of Camino 975 Comment
  SEINET3405169 Image available Polygonum californicum G. Thomas Robbins 1945-6-9 1974 El Dorado North Fork Webber Creek, about 3 miles E of Camino 975 Comment
  UC746891  Polygonum californicum G. Thomas Robbins 1945-6-9 1974 El Dorado canyon slope above North Fork Webber Creek (about 3 mi e of Camino) 975 Comment
  UC746882  Polygonum davisiae G. Thomas Robbins 1944-7-28 1795 El Dorado slopes above Lake Lois; Desolation Valley Wilderness Area, Rockbound Valley 2590 Comment
  UC746885  Polygonum douglasii subsp. majus G. Thomas Robbins 1944-6-27 1739 El Dorado top of ridge above North Fork Webber Creek (about 3 mi e of Camino) 975 Comment
  CAS-BOT-BC418549  Polygonum minimum G. Thomas Robbins 1944-7-30 1822 El Dorado Along Willow Flat Trail, about 2 mi. n. of Wrights Lake, 9 mi. n. of U.S. Highway 50 2286 Comment
  JEPS15702  Polygonum minimum G. Thomas Robbins 1956-9-8 3752 El Dorado about 1/2 mi ne Wrights Lake 2133 Comment
  UC746883  Polygonum minimum G. Thomas Robbins 1944-7-30 1822 El Dorado along Willow Flat Trail about 2 mi n Wrights Lake (9 mi n of U.S. Hwy 50) 2286 Comment
  JEPS2801 Image available Polygonum persicaria G. T. Robbins 1952-3-25 Alameda UC Botanical Garden, Berkeley Comment
Read comments
Jan 2 2016
  RSA46769  Polygonum phytolaccifolium G. Thomas Robbins 1944-7-28 1774 El Dorado Willow Flat, Willow Flat trail, 3-4 miles NE of Wrights Lake. 2287 Comment
  CAS-BOT-BC411424  Polygonum shastense G. Thomas Robbins 1945-8-12 2117 El Dorado slopes on western flank of Jobs Sister Peak 3048 Comment
  GH364805  Polygonum shastense G. T. Robbins 1945-8-12 2117 Unknown Gravelly slopes on western flank of Jobs Sister Peak 3048 Comment
  UC746887  Polygonum shastense G. Thomas Robbins 1945-8-12 2117 El Dorado Jobs Sister Peak; w flank 3048 Comment
  SEINET3404079 Image available Polygonum spergulariiforme G. Thomas Robbins 1944-6-27 1739 El Dorado North Fork Webber Creek, 3 mi E of Camino Comment
  UC964855  Polypodium G. Thomas Robbins 1944-4-23 1557 El Dorado ca. 5 mi n of Camino (near Michigan-California Lumber Company RR tramway, canyon wall of S Fork American River); S Fork American River 762 Comment
  SD185359  Polypodium californicum Jolynn Robbins 2006-4-9 46 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  UC747638  Polystichum imbricans subsp. imbricans G. Thomas Robbins 1945-6-17 1993 El Dorado near Baltic Peak (slope above Camp Creek) 1005 Comment
  UC747640  Polystichum imbricans subsp. imbricans G. Thomas Robbins 1944-6-7 1656 El Dorado ca. 3 mi e Camino (above N Fork Webber Creek) 914 Comment
  UC964857  Polystichum imbricans subsp. imbricans G. Thomas Robbins 1945-6-17 1993 El Dorado near Baltic Peak (above Camp Creek) 1005 Comment
  UC746964  Populus trichocarpa G. Thomas Robbins 1944-6-18 1730 El Dorado along North Fork Cosumnes River at Capps Crossing; along North Fork Cosumnes River at Capps Crossing 1524 Comment
  UCD100127  Portulaca pilosa W. W. Robbins; W. D. Norton 1928-8-1 1421 Yolo near Clarksburg. Comment
  SBBG72481  Potentilla bruceae J. R. and R. C. Robbins 1932-7-17 Tuolumne Tioga Pass Rd Comment
  CAS-BOT-BC141658  Potentilla flabellifolia G. Thomas Robbins 1944-7-29 1803 El Dorado along inlet stream above Lake Schmidell, Desolation Valley Wilderness Area 2590 Comment
  UC746999  Potentilla flabellifolia G. Thomas Robbins 1943-7-25 1303 El Dorado ca 2 mi nw Echo Lake; nw of Echo Lake, Haypress Meadow 2438 Comment
  CAS-BOT-BC539984  Potentilla gracilis var. fastigiata G. Thomas Robbins 1944-6-18 1714 El Dorado Sly Park meadow, 5 mi. s. of Pollock Pines 1005 Comment
  UC907624  Potentilla grayi G. Thomas Robbins 1944-7-29 1804 El Dorado above Lake Schmidell; Desolation Valley Wilderness Area, above Lake Schmidell 2590 Comment
  CAS-BOT-BC143284  Potentilla grayi G. Thomas Robbins 1943-8-15 1343 El Dorado At the edge of Grouse Lake, 2 1/2 mi. NE of Wrights Lake 2438 Comment
  JEPS25023  Primula suffrutescens G. Thomas Robbins 1948-8-7 3180 Madera Volcanic Ridge along trail to Iceberg Lake (Mt. Dana - Minarets Wild ARea); Mt. Dana-Minarets Wild Area, trail to Iceberg Lake 3048 Comment
  JEPS23820  Proboscidea lutea G. Thomas Robbins 1959-8-1 4114 Contra Costa roadside berm of frontage road just s Mt. Diablo Blvd. ((about 0.5 mi e of concrete bridge at Charles Hill and about 0.2 mi w of jct. of Hidden Valley Rd.), 2 mi w of Lafayette) 144 Comment
  JEPS23821  Proboscidea lutea G. Thomas Robbins 1959-8-1 4114 Contra Costa roadside berm of frontage road just s Mt. Diablo Blvd. ((about 0.5 mi e of concrete bridge at Charles Hill and about 0.2 mi w of jct. of Hidden Valley Rd.), 2 mi w of Lafayette) 144 Comment
  JEPS84884  Proboscidea lutea G. Thomas Robbins 1959-8-1 4114 Contra Costa roadside berm of frontage road just s Mt. Diablo Blvd. ((about 0.5 mi e of concrete bridge at Charles Hill and about 0.2 mi w of jct. of Hidden Valley Rd.), 2 mi w of Lafayette) 144 Comment
  UCSB664  Prosartes hookeri Robbins, G. 1937-4-4 Alameda Strawberry Creek, w of Berkeley Comment
  UC1084462  Prunella vulgaris var. lanceolata G. Thomas Robbins 1937-6-5 225 Sonoma about 10 mi w Santa Rosa (Vine Hill region) Comment
  SBBG70924  Prunus emarginata J. R. and R. C. Robbins 1932-6-7 Tulare Sequoia Nat Park 1950 Comment
  UC747252  Prunus emarginata G. Thomas Robbins 1943-6-27 1227 El Dorado near Echo Summit Pass 2286 Comment
  SD45191  Prunus fremontii G. Thomas Robbins 1950-4-7 3330 Kern about 0.5 mile west of Walker Pass (store) along State Highway 178 1372 Comment
  UC746974  Prunus subcordata G. Thomas Robbins 1943-4-15 996 El Dorado 3 mi e of Camino (North Fork Webber Creek Canyon); North Fork Webber Creek Canyon 1036 Comment
  UC747257  Prunus subcordata G. Thomas Robbins 1944-4-14 1538 Marin low hills just W of Hamilton Air Force base 152 Comment
  CAS-BOT-BC154728  Prunus virginiana var. demissa G. Thomas Robbins 1944-5-15 1599 El Dorado W. of Institute of Forest Genetics, about 3 mi. e. of Placerville 762 Comment
  SBBG62541  Psathyrotes ramosissima J. R. and R. C. Robbins 1930-3-26 San Bernardino Mojave Desert Comment
  SD185551  Pseudognaphalium californicum Jolynn Robbins 2006-4-9 49 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  OBI16419  Pseudognaphalium californicum G. Thomas Robbins 1959-8-6 John Weiler Monterey Near Mule Cyn, along side rd leading E from state hwy 1 about 1.5 mi S of Pfeiffer-Big Sur State park 305 Comment
  JEPS22112  Pseudognaphalium ramosissimum G. Thomas Robbins with S. Galen Smith 1958-7-8 3896 Marin along Sir Francis Drake Highway opposite and e of RCA Radio Station (1.5 mi s of crossing of Drakes Estero); Point Reyes Peninsula Comment
  OBI16405  Pseudognaphalium ramosissimum G. Thomas Robbins 1958-8-31 3929 Alameda Slopes of rd cut along Tunnel Rd, a short distance W of Charing Cross Rd, Oakland Hills 244 Comment
  JEPS25106  Pseudognaphalium stramineum G. Thomas Robbins 1959-4-25 3997 Alameda at western edge of Eastshore Highway just s Emeryville interchange (Powell St.) (along bay); San Francisco Bay, Emeryville Comment
  UC747141  Pseudognaphalium stramineum G. Thomas Robbins 1945-7-16 2072 El Dorado 3 mi e of Camino (in woods on canyon slope above North Fork Webber Creek) 914 Comment
  UCD81543  Pseudognaphalium stramineum W. W. Robbins; W. D. Norton 1928-8-1 1426 Yolo near Clarksburg. Comment
  OBI16437  Pseudognaphalium stramineum G. Thomas Robbins 1959-4-25 3997 Alameda Along the shore of San Francisco Bay at the W edge of the Easthshore hwy, just S of the Emeryville interchange (Powell St), Emeryville Comment
  UC907768  Psilocarphus tenellus G. Thomas Robbins 1945-5-27 1950 El Dorado 1.5 mi s Camino (along Pleasant Valley road); North Fork Webber Creek Comment
  SBBG68075  Psorothamnus emoryi R. C. and J. R. Robbins 1933-2-16 Imperial Travertine Point Comment
Read comments
Dec 31 2011
  UCD108369  Psorothamnus schottii W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  SEINET195479  Pteryxia terebinthina G. Thomas Robbins 1945-7-8 2047 El Dorado Near Al Tahoe Lake Tahoe. 1920 Comment
  SEINET195494  Pteryxia terebinthina G. Thomas Robbins 1944-7-30 1816 El Dorado Desolation Wilderness ; Above Lake Lois Rockbound Valley. 2591 Comment
  UC747227  Pteryxia terebinthina var. californica G. Thomas Robbins 1945-7-8 2047 El Dorado near Al Tahoe, Lake Tahoe 1920 Comment
  A345825  Purshia tridentata G. T. Robbins 1945-8-12 2144 Unknown along road to High Meadow, 6-8 mi. SE of Lake Tahoe 2133 Comment
  UC747006  Purshia tridentata var. tridentata G. Thomas Robbins 1945-7-8 2039 El Dorado near Al Tahoe; Lake Tahoe 1920 Comment
  CAS-BOT-BC460589  Pyrola aphylla G. Thomas Robbins 1943-6-20 1191 El Dorado Along road to PG&E Power House, 2--3 mi. W of Forebay reservoir (near Pollock Pines) 975 Comment
  UC747675  Pyrola asarifolia G. Thomas Robbins 1944-6-17 1703 El Dorado slope above U.S. Highway 50, about 1 mi E of Pyramid Ranger Station 1676 Comment
  CAS-BOT-BC466017  Pyrola picta G. Thomas Robbins 1945-8-4 2081 El Dorado On shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area 2011 Comment
  UC747673  Pyrola picta G. Thomas Robbins 1943-6-20 1191 El Dorado 2-3 mi. W of Forebay Reservoir (near Pollock Pines) 975 Comment
  UC972341  Pyrrocoma apargioides G. Thomas Robbins 1951-8-2 3405 A Fresno upper end of French Canyon French Canyon 3200 Comment
  CAS-BOT-BC362368  Pyrrocoma racemosa var. racemosa G. Thomas Robbins 1959-8-2 4120 Alameda About 1/4 mile north of the west end of Depot Road, just east of the American Salt Co. evaporating ponds along the shore of San Francisco Bay, about 1 3/4 miles northwest of Mt. Eden, about 3/4 mile south of Russell 1 Comment
  JEPS25243  Pyrrocoma racemosa var. racemosa G. Thomas Robbins 1959-8-2 4120 Alameda 0.25 mi n w end of Depot Road (just e of the American Salt Co. about 1.75 mi nw of Mt. Eden, about 0.75 mi s of Russell); San Francisco Bay 1 Comment
  OBI15560  Pyrrocoma racemosa var. racemosa G. Thomas Robbins 1959-8-2 4120 Alameda About 1/4 mi N of the W end of Depot Rd, just E of the American Salt Co. evaporating ponds along the shore of San Francisco Bay, about 1-3/4 mi NW of Mt. Eden, about 3/4 mi S of Russell 2 Comment
  CAS-BOT-BC362367  Pyrrocoma racemosa var. racemosa G. Thomas Robbins 1958-10-25 3956 Alameda Along Depot Rd., about 0.7 mile west of Mt. Eden Sta., and opposite Hayward Motorcycle Club Comment
  OBI15559  Pyrrocoma racemosa var. racemosa G. Thomas Robbins 1958-10-19 3953 Alameda Along First Ave at the W edge of Russell City, about 3 mi W of hayward and about 1 mi E of the shore of San Francisco Comment
  UC746869  Quercus X morehus G. Thomas Robbins 1943-10-28 1405 El Dorado 3 mi e Placerville (near Smith Flat) 670 Comment
  GH344340  Quercus douglasii G. T. Robbins 1943-10-28 1402 Unknown along U. S. Highway 50, three miles east of Placerville 762 Comment
  UC746867  Quercus douglasii G. Thomas Robbins 1943-10-28 1402 El Dorado 2 mi e Placerville (along U.S. Highway 50) 762 Comment
  UCD45918  Quercus durata var. durata Thomas Robbins 1945-5-20 1928 El Dorado Above Sweetwater Creek, near Simpson's Ranch, Eldorado County, California. Elevation 600 feet. 182 Comment
  UC1084449  Quercus garryana G. Thomas Robbins 1940-3-24 307 Sonoma ca 6 mi ne Santa Rosa; Rincon Ridge 167 Comment
  CAS-BOT-BC62788  Quercus garryana var. breweri G. Thomas Robbins 1945-6-9 1976 El Dorado Above North Fork Webber Creek ca. 3 mi. e. of Camino 975 Comment
  GH344982  Quercus garryana var. breweri G. T. Robbins 1945-6-9 1976 Unknown Above North Fork Webber Creek, about 3 miles east of Camino 975 Comment
  UC746879  Quercus kelloggii G. Thomas Robbins 1944-4-30 1580 El Dorado about 3 mi e Camino (above North Fork Webber Creek) 975 Comment
  A343520  Quercus vacciniifolia G. T. Robbins 1943-7-25 1319 Unknown along trail above east shore of Upper Echo Lake 2286 Comment
  GH343509  Quercus vacciniifolia G. T. Robbins 1945-8-5 2090 Unknown slope above north shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area 2011 Comment
  RSA46948  Quercus vacciniifolia G. Thomas Robbins 1945-8-5 2090 El Dorado Above north shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area. 2012 Comment
  UC746863  Quercus vacciniifolia G. Thomas Robbins 1945-8-5 2090 El Dorado about n shore Rockbound Lake; Desolation Valley Wilderness Area, Rockbound Valley 2011 Comment
  UC746866  Quercus vacciniifolia G. Thomas Robbins 1943-7-25 1319 El Dorado along trail above e shore Upper Echo Lake 2286 Comment
  CAS-BOT-BC104661  Quercus wislizeni G. Thomas Robbins 1943-8-20 1362 El Dorado ridge near Institute of Forest Genetics, 3 mi E of Placerville 822 Comment
  UC1084409  Quercus wislizeni G. Thomas Robbins 1937-4-11 112 San Mateo Wooded hillside above Redwood City Comment
  UC746862  Quercus wislizeni G. Thomas Robbins 1943-8-20 1362 El Dorado 2 mi e Placerville (ridge near Institute of Forest Genetics) 822 Comment
  SBBG67860  Rafinesquia neomexicana J. R. and R. C. Robbins 1930-3-26 San Bernardino NE Mojave Desert Comment
  UC747441  Ranunculus alismifolius var. alismellus G. Thomas Robbins 1945-7-8 2050 El Dorado near Velma Lakes (meadow along Velma Lakes trail); Desolation Valley Wilderness Area 2438 Comment
  CAS-BOT-BC379447  Ranunculus alismifolius var. hartwegii G. Thomas Robbins 1945-7-1 2017 El Dorado near Lyons Creek on road about 4 mi S of Wrights Lake 2042 Comment
  CAS-BOT-BC379176  Ranunculus aquatilis var. aquatilis G. Thomas Robbins 1945-5-20 1942 El Dorado New York Creek, about 2.5 mi S of Salmon Falls 152 Comment
  UC747384  Ranunculus aquatilis var. capillaceus G. Thomas Robbins 1945-5-20 1942 El Dorado about 2 1/2 mi s Salmon Falls; New York Creek 152 Comment
  UCD95864  Ranunculus aquatilis var. diffusus Robbins; Raynor 1943-6-1 s.n. Modoc Corporation Ranch near Likely. Comment
  POM312419  Ranunculus bongardii G. Thomas Robbins, S. Galen Smith 1950-4-15 1907 Colusa Colusa County: In wet mud and vernal pool, Bear Valley Comment
  UC1084358  Ranunculus californicus G. Thomas Robbins 1937-3-26 17 Sonoma meadow near Wright School (on hwy to Sebastopol) Comment
  GH369796  Ranunculus eschscholtzii G. T. Robbins 1944-7-29 1813 Unknown on ridge between Lake Lois and Lake Schmidell, Desolation Valley Wilderness Area 2590 Comment
  UC907709  Ranunculus eschscholtzii G. Thomas Robbins 1944-7-29 1813 El Dorado on ridge between Lake Lois and Lake Schmidell; Desolation Valley Wilderness Area 2590 Comment
  POM268966  Ranunculus eschscholtzii G. Thomas Robbins 1944-7-29 1813 El Dorado Moist ground in shady hemlock fir woods on ridge betw Lake Lois and Lake Schmidell, Desolation Valley Wilderness. 2591 Comment
  UC1101375  Ranunculus lobbii G. T. Robbins and S. Galen Smith 1950-3-11 1904 Marin ca 1 mi s Olema (vernal pool) Comment
  UC747454  Ranunculus occidentalis G. Thomas Robbins 1945-4-22 1850 El Dorado about 2 1/2 mi e Shingle Springs 457 Comment
  UC747451  Ranunculus occidentalis G. Thomas Robbins 1943-3-27 969 El Dorado 3 mi e Placerville (w edge of Institute of Forest Genetics) 762 Comment
  SEINET195474  Ranunculus occidentalis var. eisenii G. T. Robbins 1945-4-22 1850 El Dorado Ca 2.5 mi E of Shingle Springs 457 Comment
  UC1084433  Ranunculus orthorhynchus var. bloomeri G. Thomas Robbins 1940-3-21 291 Sonoma 2-3 mi se Windsor (on Pleasant Ave. road) Comment
  UC747420  Ranunculus orthorhynchus var. orthorhynchus G. Thomas Robbins 1944-5-7 1586 El Dorado about 5 mi s Pollock Pines (in and along stream near Sly Park meadow) 1005 Comment
  UC1084417  Ranunculus pusillus G. Thomas Robbins 1937-5-23 181 Sonoma vernal pool near Wright School (between Santa Rosa and Sebastopol) Comment
  UC639127  Ranunculus pusillus G. Thomas Robbins 1937-5-23 181 Sonoma near Wright School (on hwy between Santa Rosa and Sebastopol, edge of vernal pool) Comment
  POM269796  Ranunculus pusillus G. Thomas Robbins 1937-5-23 181 Sonoma edge of vernal pool, near Wright School on Hwy betw Santa Rosa and Sepastopol Comment
  SD165247  Raphanus sativus Jolynn Robbins 2004-7-5 13 San Diego Damon Lane County Park in south El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  JEPS22040  Reseda luteola G. Thomas Robbins 1958-7-4 3889 Alameda about 1/4 mi s of East Creek Slough (at ne edge of San Leandro Bay, Oakland); Oakland, San Leandro Bay Comment
  CAS-BOT-BC427543  Reseda luteola G. Thomas Robbins 1958-7-4 3889 Alameda At the northeast edge of San Leandro Bay, about 1/4 mile south of East Creek Slough, Oakland. Comment
  UCD116489  Reseda luteola G. Thomas Robbins 1958-7-4 3889 Alameda At the NE edge of San Leandro Bay, about 1/4 mile S of East Creek Slough, Oakland. Comment
  UC746927  Rhamnus californica G. Thomas Robbins 1944-4-14 1539 Marin immediately w Hamilton Field Air Base 30 Comment
  UC746929  Rhamnus crocea G. Thomas Robbins with J. T. Howell 1944-4-13 1494 Marin 2-3 mi w Hamilton Field Air Base; Big Rock Ridge 426 Comment
  CAS-BOT-BC59948  Rhamnus crocea G. Thomas Robbins 1944-4-13 1494 Marin On Big Rock Ridge, 2-3 mi. w. of Hamilton Field Air Base. 426 Comment
  CAS-BOT-BC55965  Rhamnus ilicifolia G. Thomas Robbins 1945-4-22 1849 El Dorado 2-3 mi. NW of Shingle Springs 457 Comment
  UC746914  Rhamnus ilicifolia G. Thomas Robbins 1945-4-22 1849 El Dorado 2-3 mi nw Shingle Springs 457 Comment
  UC746926  Rhamnus ilicifolia G. Thomas Robbins 1944-4-23 1548 El Dorado near Slab Creek junction with South Fork American River (slope above Slab Creek) 609 Comment
  UC907666  Rhamnus purshiana G. Thomas Robbins 1932-6-5 1124 El Dorado about 3 mi e Camino (above North Fork Webber Creek) 1036 Comment
  UC907683  Rhamnus rubra G. Thomas Robbins 1944-5-21 1620 El Dorado about 3 mi e Camino (e-facing canyon slope of North Fork of Webber Creek); North Fork of Webber Creek 914 Comment
  A362990  Rhododendron columbianum G. T. Robbins 1943-7-25 1288 Unknown Common around shore of small lake on rocky slopes above eastern shore of Medley Lakes Reservoir, Desolation Valley Primitive Area 2590 Comment
  UC1084452  Rhododendron occidentale G. Thomas Robbins 1937-5-23 204 Sonoma 10 mi w of Santa Rosa (Vine Hill Region, Pitkin Ranch); Vine Hill Region, Pitkin Ranch Comment
  UC747655  Rhododendron occidentale G. Thomas Robbins 1943-6-6 1132 El Dorado 4-5 mi ne of Camino (near Mace Road on Michegan-California Company Railway) Comment
  CAS-BOT-BC199731  Rhododendron occidentale var. californicum G. Thomas Robbins 1943-6-6 1132 El Dorado Near Mace Road at Michigan-California Co. railroad, 4-5 mi. NE of Camino 975 Comment
  CAS-BOT-BC200685  Rhus aromatica G. Thomas Robbins 1945-5-18 1916 El Dorado Above Smithflat 731 Comment
  GH347195  Rhus trilobata G. T. Robbins 1945-5-18 1916 Unknown on hillside above Smithflat 731 Comment
  UC747311  Rhus trilobata G. Thomas Robbins 1945-5-18 1916 El Dorado on hillside above Smithflat 731 Comment
  UC747346  Ribes amarum G. Thomas Robbins 1943-6-20 1197 El Dorado 4-5 mi nw Pollock Pines (along road to powerhouse, n-facing canyon wall); South Fork American River 914 Comment
  UC747378  Ribes amarum G. Thomas Robbins 1943-4-20 1012 El Dorado ca. 3 mi e Camino; North Fork Webber Creek 1036 Comment
  UC747338  Ribes californicum G. Thomas Robbins 1945-5-5 1871 Marin 2-3 mi w Hamilton Field Air Base (valley flat at n foot of Big Rock Ridge); Big Rock Ridge 0 Comment
  GH380078  Ribes cereum G. T. Robbins 1944-6-17 1702 Unknown about 1 mi. e. of Pyramid Ranger Station 1676 Comment
  UC747333  Ribes cereum G. Thomas Robbins 1945-8-12 2138 El Dorado along trail to Freel Peak (slopes w of High Meadow) 2286 Comment
  UC747359  Ribes cereum G. Thomas Robbins 1945-10-6 2149 Lassen summit Crater Lake Mt. (above lake); Lassen National Forest 2194 Comment
  UC747375  Ribes cereum G. Thomas Robbins 1944-6-17 1702 El Dorado about 1 mi e Pyramid Ranger Station 1676 Comment
  JEPS15562  Ribes lobbii G. Thomas Robbins with L. R. Heckard 1956-7-25 3718 Colusa about 50 yards below summit Snow Mt. West (ridge between east and west peaks of Snow Mt.); Snow Mt. 2133 Comment
  UC747326  Ribes menziesii G. Thomas Robbins 1944-4-14 1525 Marin about 3 mi w Hamilton Field Air Base (n slope of Big Rock Ridge) 60 Comment
  A380530  Ribes montigenum G. T. Robbins 1945-7-8 2049 Unknown along trail near Velma Lakes, Desolation Valley Wilderness Area 2438 Comment
  UC747327  Ribes montigenum G. Thomas Robbins 1944-7-29 1814 El Dorado on slope n and above Lake Lois; Desolation Valley Wilderness Area 2590 Comment
  UC747332  Ribes montigenum G. Thomas Robbins 1945-7-8 2049 El Dorado Near Velma Lakes, Desolation VAlley Wilderness Area 2438 Comment
  A380620  Ribes nevadense G. T. Robbins 1944-6-17 1701 Unknown about 1 mi. e. of Pyramid Ranger Station 1676 Comment
  UC747371  Ribes nevadense G. Thomas Robbins 1943-4-22 1023 El Dorado 3 mi e Camino; North Fork Webber Creek 914 Comment
  UC747380  Ribes nevadense G. Thomas Robbins 1943-6-27 1217 El Dorado ridge above Echo Summit Pass (about 3/4 mi s of U.S. Highway 50) 2438 Comment
  UC747167  Ribes roezlii G. Thomas Robbins 1944-4-23 1565 El Dorado about 4 mi n Camino (along Chute Camp Road above river); South Fork American River 762 Comment
  UC747349  Ribes roezlii G. Thomas Robbins 1943-7-23 1280 El Dorado 3 mi e Camino (C.C.C. Camp Snowline) 1036 Comment
  UC747388  Ribes roezlii G. Thomas Robbins 1943-6-27 1235 El Dorado w Echo Summit Pass (along U.S. Highway 50 near road to Audrain Lake) 2194 Comment
  UCD102468  Ribes roezlii Robbins; Raynor 1943-6-1 s.n. Plumas Belden. Comment
  UCSB2663  Ribes sanguineum var. glutinosum Robbins, G. 1937-4-4 Alameda Strawberry Creek Canyon; University of California Campus Comment
  CAS-BOT-BC168751  Ribes victoris G. Thomas Robbins 1944-4-14 1525 Marin Small stream on north slope of Big Rock Ridge, about 3 mi. w. of Hamilton Field Air Base 91 Comment
  SEINET195655 Image available Ribes viscosissimum G. T. Robbins 1945-7-1 2033 El Dorado Wrights Lake; along Twin Lakes trail 1-1.5 miles northeast of Wright's Lake nine miles north of US Hwy 50 2286 Comment
  UC747360 Image available Ribes viscosissimum G. Thomas Robbins 1943-6-27 1232 El Dorado s Echo Summit Pass 2225 Comment
  A381011  Ribes viscosissimum var. hallii G. T. Robbins 1945-7-1 2033 Unknown along Twin Lakes trail, 1-1 1/2 mi. NE of Wrights Lake, 9 mi n. of U. S. Highway 50 2286 Comment
  JEPS14591  Rigiopappus leptocladus G. Thomas Robbins with Peter H. Raven 1956-4-28 3679 El Dorado along Georgetown-Greenwood Road 2 mi w Greenwood (8.3 mi w of Georgetown) 502 Comment
  JEPS8067  Rigiopappus leptocladus G. Thomas Robbins, Lawrence R. Heckard 1953-5-31 3552 A Tulare on road to Eshom Valley 3.8 mi se Badger; just e of Sequoia National Forest boundary 1005 Comment
  UC700315  Romanzoffia californica G. Thomas Robbins 1944-4-14 1521 Marin ca. 3 mi. w. Hamilton Field (on n.-facing slope of Big Rock Ridge); Big Rock Ridge 60 Comment
  UC1084381  Rorippa G. Thomas Robbins 1937-4-11 81 San Mateo along Skyline Boulevard near County Jail (s of San Francisco); s of San Francisco Comment
  UCD115244  Rorippa austriaca Robbins; Raynor 1943-6-1 s.n. Modoc Corporation Ranch in Likely. Comment
  UC747370  Rorippa nasturtium-aquaticum G. Thomas Robbins 1944-5-16 1610 El Dorado about 3 mi e Camino (meadow above North Fork Webber Creek); North Fork Webber Creek, e of Camino 914 Comment
  CAS-BOT-BC146427  Rosa bridgesii G. Thomas Robbins 1944-6-3 1652 El Dorado Along U. S. Highway 50, 3 mi. e. of Camino 1036 Comment
  UC746978  Rosa bridgesii G. Thomas Robbins 1944-6-3 1652 El Dorado along U. S. Highway 50, 3 mi E of Camino 1036 Comment
  SEINET195659  Rosa gymnocarpa G. Thomas Robbins 1944-6-3 1651 El Dorado Shady Ponderosa pine-White Fir woods along U. S. Highway 50, three miles east of Camino, 1036 Comment
  UC746996  Rosa gymnocarpa G. Thomas Robbins 1943-5-23 1079 El Dorado 3 mi e Camino; North Fork Webber Creek 914 Comment
  UCSB2918  Rosa gymnocarpa Robbins, G. 1937-5-16 Alameda Strawberry Creek Canyon, Berkeley Hills, University of California Campus Comment
  CAS-BOT-BC148277  Rosa woodsii var. ultramontana G. Thomas Robbins 1945-8-12 2146 El Dorado Along road to High Meadow, 6-8 mi. SE of Lake Tahoe 2133 Comment
  UC747255  Rosa woodsii var. ultramontana G. Thomas Robbins 1945-8-12 2146 El Dorado 6-8 mi. SE of Lake Tahoe 2133 Comment
  UC481485  Rubus parviflorus Wilfred Robbins 1927-8-5 El Dorado Sly Park Comment
  UC747001  Rubus parviflorus G. Thomas Robbins 1943-6-20 1200 El Dorado along road to powerhouse 4-5 mi nw Pollock Pines; South Fork American River, nw of Pollock Pines 914 Comment
  CAS-BOT-BC158729  Rubus ursinus G. Thomas Robbins 1945-6-17 1996 El Dorado Along Camp Creek near Baltic Peak 1036 Comment
  UCSB2947  Rubus ursinus Robbins, G. 1937-5-16 Alameda Strawberry Creek Canyon, Berkeley Hills, University of California Campus Comment
  SBBG60792  Rudbeckia californica J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd, Mono-Tuolumne County line 1828 Comment
  UCD101331  Rumex lacustris Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  JEPS22044  Rumex salicifolius var. crassus G. Thomas Robbins 1958-6-25 3883 Marin w end Rodeo Lagoon Comment
  UC964835  Ruppia cirrhosa G. Thomas Robbins 1950-4-5 3312 Inyo Badwater; Death Valley National Monument -85 Comment
  CAS-BOT-BC445658  Sagittaria cuneata G. Thomas Robbins 1956-9-10 3765 Amador Just to the south of Carson Spur, along State Highway 88 2435 Comment
  CAS-BOT-BC445659  Sagittaria cuneata G. Thomas Robbins 1956-9-10 3765 Amador Just to the south of Carson Spur, along State Highway 88 2435 Comment
  CAS-BOT-BC445639  Sagittaria cuneata G. Thomas Robbins 1943-8-15 1337 El Dorado North of Wrights Lake 2286 Comment
  SD51813  Salicornia depressa G. Thomas Robbins 1959-6-12 4110 Alameda Saling depressions ca. 0.25 mile north of west end of Depot Road, just east of the American Salt Company evaporating ponds. Comment
  UC1179255  Salicornia europaea G. T. Robbins 1959-7-12 4110 Alameda about 0.75 mi s Russell (and about 1.75 mi w of Mount Eden, about 0.25 mi n of w end of Depot Road, just e of American Salt Company evaporating ponds, shore of bay); San Francisco Bay 1 Comment
  POM313498  Salicornia maritima G. Thomas Robbins 1959-7-12 4110 Alameda Saline depression about 0.25 mile N of west end of Depot Road, just E of the American Salt Company evaporating ponds, shore of San Francisco Bay, about 1.75 miles W of Mt. Eden Station and about 0.75 mile S of Russell. 2 Comment
  UCD99142  Salicornia rubra G. Thomas Robbins 1959-9-27 4167 Alameda Edge of San Francisco Bay, about one-fourth mile east of San Francisco-Oakland Bay Bridge Toll Plaza, Oakland. Comment
  JEPS22092  Salicornia virginica G. Thomas Robbins 1958-7-19 3904 Contra Costa about 0.75 mi s Pt. San Pablo, Potrero San Pablo, Richmond; San Francisco Bay, Point Orient Comment
  CAS-BOT-BC103472  Salix eastwoodiae G. Thomas Robbins 1945-7-1 2030 El Dorado on slope e. and above Island Lake, ca. 4 mi. NE of Wrights Lake, 9 mi. n. of U.S. Highway 50 2590 Comment
  CAS-BOT-BC103491  Salix eastwoodiae G. Thomas Robbins 1943-7-25 1295 El Dorado slopes above Medley Lakes (reservoir), Desolation Valley Wilderness Area 2590 Comment
  JEPS25075  Salix exigua G. Thomas Robbins 1959-2-23 3959 Alameda w San Lorenzo (along S. Pacific R.R. near w end of Lewelling Blvd., and along Lewelling Blvd. for ca. 1/4 mi e of R.R. tracks) 3 Comment
  CAS-BOT-BC104041  Salix hindsiana G. Thomas Robbins 1945-5-15 1906 El Dorado along railroad right-of-way, 1/2 mi. e. of [Smithflat] Smith Flat 701 Comment
  UC1084372  Salix laevigata G. Thomas Robbins 1937-3-27 43 Sonoma Santa Rosa Creek Santa Rosa, Santa Rosa Creek Comment
  UC907764  Salix lasiolepis G. Thomas Robbins 1944-6-11 1678 El Dorado Riverton South Fork American River (along bank of river) 975 Comment
  UC746968  Salix scouleriana G. Thomas Robbins 1944-6-17 1700 El Dorado ca. 1 mi. e. Pyramid Ranger Station (slope above U.S. Hwy. 50) 1676 Comment
  UC1084371  Salix sitchensis G. Thomas Robbins 1937-3-26 41 Sonoma creek near Bodega Bay Bodega Bay Comment
  SD165190  Salvia apiana Jolynn Robbins 2004-7-5 22 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  JEPS8044  Salvia dorrii var. dorrii G. Thomas Robbins with L. Constance, R. Bacigalupi, G. W. Gillett, and L. R. Heckard 1952-5-1 3491 Inyo Leadfield; Death Valley National Monument, Titus Canyon 1645 Comment
  JEPS7934  Salvia funerea G. Thomas Robbins 1952-5-1 3507 Inyo Titus Canyon; Death Valley National Monument, Grapevine Mountains 883 Comment
  GH403497  Salvia sonomensis G. T. Robbins 1944-4-30 1571 Unknown slopes above South Fork Webber Creek, 3-4 miles northeast of Newtown 762 Comment
  A386113  Sambucus nigra subsp. caerulea G. T. Robbins 1942-9-24 915 Unknown Insitute of Forest Genetics, 3 miles east of Placerville 762 Comment
  CAS-BOT-BC238636  Sambucus nigra subsp. caerulea G. Thomas Robbins 1942-9-24 915 El Dorado Near Institute of Forest Genetics, 3 mi. e. of Placerville 762 Comment
  SD165243  Sambucus nigra subsp. caerulea Jolynn Robbins 2004-7-5 15 San Diego Damon Lane County Park in south El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  GH386227  Sambucus racemosa G. T. Robbins 1945-8-12 2137 Unknown above outlet stream of Starr Lake along trail to Freel Peak 2743 Comment
  UC747067  Sambucus racemosa var. microbotrys G. Thomas Robbins 1945-8-12 2137 El Dorado slopes above outlet stream of Starr Lake (along trail to Freel Peak) 2743 Comment
  CAS-BOT-BC235097  Sambucus racemosa var. racemosa G. Thomas Robbins 1943-7-25 1301 El Dorado Along trail to Echo Lake, about 1 mi. SE of Desolation Valley Wilderness Area 2438 Comment
  UC747256  Sanguisorba minor subsp. muricata G. Thomas Robbins 1944-5-5 1584 El Dorado about 3 mi e Placerville (near Institute of Forest Genetics); near Institute of Forest Genetics 762 Comment
  POM196058  Sanicula bipinnata L. F. Robbins 1928-3-18 s.n. Napa Putah Canyon. Comment
  UC1084385  Sanicula bipinnatifida G. Thomas Robbins 1937-4-11 91 San Mateo near Spring Valley Lakes (along road to Woodside) Comment
  UC747222  Sanicula bipinnatifida G. Thomas Robbins 1943-4-6 979 El Dorado 2 1/2 mi e of Placerville (at s edge of Institute of Forest Genetics); Institute of Forest Genetics 822 Comment
  UCD127944  Sanicula bipinnatifida W. W. Robbins 1926-4-17 534 Lassen Grass Valley. Comment
  UC1084406  Sanicula crassicaulis G. Thomas Robbins 1937-4-17 117 Contra Costa near Point Richmond Comment
  UC746905  Sanicula crassicaulis G. Thomas Robbins 1944-5-28 1637 El Dorado 1-2 mi from confluence of Long Creek with South Fork American River; Long Creek 762 Comment
  UC746906  Sanicula crassicaulis G. Thomas Robbins 1944-4-14 1534 Marin about 3 mi w of Hanmilton Field Air Base (on Big Rock Ridge); Big Rock Ridge 365 Comment
  UC746910  Sanicula crassicaulis G. Thomas Robbins 1943-4-30 1058 El Dorado 3 mi e of Placerville (near Institute of Forest Genetics) 762 Comment
  UC746907  Sanicula laciniata G. Thomas Robbins 1944-4-14 1533 Marin about 3 mi w of Hamilton Field Air Base (on Big Rock Ridge); Big Rock Ridge 365 Comment
  UC747226  Sanicula tuberosa G. Thomas Robbins 1945-7-1 2029 El Dorado 1 1/2 mi e of Wrights Lake (on trail to Grouse Lake, 9 mi n of U.S. Highway 50) 2286 Comment
  JEPS8454  Sarcostemma hirtellum G. Thomas Robbins with R. Bacigalupi, L. Constance, G. W. Gillett, and L. R. Heckard 1952-5-1 3506 Inyo Titus Canyon Grapevine Mts., Death Valley Nat'l Monument, Titus Canyon 883 Comment
  SEINET13947740 Image available Satureja douglasii G. Thomas Robbins 1940-1 310 Unknown Sunset District, San Francisco Comment
  UC1084489  Satureja douglasii G. Thomas Robbins 1940-5-15 310 San Francisco sand hills of Sunsut District San Francisco Comment
  GH381079  Saxifraga aprica G. T. Robbins 1945-7-1 2025 Unknown along trail to Grouse Lake, 1 1/2 miles east of Wrights Lake 2286 Comment
  UC747325  Saxifraga aprica G. Thomas Robbins 1945-7-1 2025 El Dorado 1 1/2 mi e of Wrights Lake (along trail to Grouse Lake) 2286 Comment
  GH381087  Saxifraga bryophora G. T. Robbins 1944-7-30 1826 Unknown along trail to Smith Lake, ca. two miles east 2438 Comment
  UC747166  Saxifraga bryophora G. Thomas Robbins 1943-8-15 1346 El Dorado 2 1/2 mi ne of Wrights Lake (at edge of Grouse Lake); Grouse Lake 2438 Comment
  GH381108  Saxifraga californica G. T. Robbins 1944-4-23 1554 Unknown on canyon side above South Fork American River, about five miles north of Camino 762 Comment
  UC747329  Saxifraga californica G. Thomas Robbins 1944-4-23 1555 El Dorado about 5 mi n of Camino; South Fork American River 762 Comment
  UC747343  Saxifraga californica G. Thomas Robbins 1943-4-25 1030 El Dorado 3 mi e of Camino (above North Fork Webber Creek); North Fork Webber Creek 975 Comment
  UC1084447  Saxifraga integrifolia G. Thomas Robbins 1940-3-23 305 Sonoma near Wright School (along Sebastopol - Santa Rosa Highway) Comment
  GH381214  Saxifraga tolmiei G. T. Robbins 1944-7-29 1807 Unknown Desolation Valley Wilderness Area 2651 Comment
  UC747336  Saxifraga tolmiei G. Thomas Robbins 1943-9-5 1387 El Dorado near summit of Dick's Pass 2895 Comment
  UC747374  Saxifraga tolmiei G. Thomas Robbins 1944-7-29 1807 El Dorado above Lake Schmidell (Red Peak, Rockbound Valley, Desolation Valley Wilderness Area); Desolation Valley Wilderness Area, Red Peak, Rockbound Valle 2651 Comment
  SD158240  Schinus molle Jolynn Robbins 2004-4-5 4 San Diego Damon Lane County Park in El Cajon. South on Jamacha, right on Fury. Right on Wieghorst, left on Calle Albara. 68 Comment
  SEINET10301447  Schoenoplectus pungens G. T. Robbins 1950-5-13 3350 San Luis Obispo Along west shore of Oso Flaco Lake Comment
  CAS-BOT-BC22415  Scirpus congdonii G. T. Robbins 1956-9-8 3749 El Dorado moist meadow just beyond the northeast edge of Wrights Lake 2133 Comment
  JEPS15690  Scirpus microcarpus G. Thomas Robbins 1956-9-10 3767 Amador at margin of small pond just to the s Carson Spur (along State Highway 88); s of Carson Spur 2435 Comment
  CAS-BOT-BC110886  Scirpus microcarpus Guy Thomas Robbins 1956-9-10 3767 Amador Small pond just to the south of Carson Sour, along State Highway 88 2435 Comment
  JEPS88954  Scirpus microcarpus G. Thomas Robbins with John Dawson and Bob Ornduff 1956-10-6 3789 Monterey about one mi below U.S. Forest Service China Camp Ground (Miller Canyon (headwaters of Miller Fork of Carmel River)); Santa Lucia Range, Miller Fork Carmel River, Miller Canyon 1158 Comment
  UC964802  Scirpus pungens G. Thomas Robbins 1950-5-13 3350 San Luis Obispo marshy borders along w shore Oso Flaco Lake Comment
  JEPS7785  Scrophularia californica subsp. floribunda G. Thomas Robbins and Lawrence R. Heckard 1953-5-29 3535 Tulare 3 mi e Springville (above Middle Fork Tule River) 457 Comment
  SD185945  Scrophularia californica subsp. floribunda Jolynn Robbins 2006-4-9 45 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  GH402001  Scutellaria californica G. T. Robbins 1943-7-6 1241 Unknown North Fork Webber Creek, about 3 miles east of Camino 1005 Comment
  JEPS8288  Scutellaria tuberosa G. Thomas Robbins, Lawrence R. Heckard 1953-6-1 3564 Fresno 4.5 mi se of Auberry; Bald Mountain 914 Comment
  UC747566  Scutellaria tuberosa G. Thomas Robbins 1944-4-14 1511 Marin 2-3 mi w of Hamilton Field Air Base (n slope of Big Rock Ridge); Big Rock Ridge 152 Comment
  CAS-BOT-BC417775  Sedella pumila G. Thomas Robbins 1943-4-28 1044 El Dorado At the Institute of Forest Genetics, 3 mi. E of Placerville 822 Comment
  RSA422247  Sedella pumila L. F. Robbins 1927-5-6 s.n. El Dorado Near Placerville. Comment
  CAS-BOT-BC64226  Sedum obtusatum G. Thomas Robbins 1944-7-28 1780 El Dorado Along Willow Flat Trail, 3-4 mi. NE of Wrights Lake 2438 Comment
  UC747400  Sedum rosea subsp. integrifolium G. Thomas Robbins 1945-7-1 2031 El Dorado about 4 mi ne Wrights Lake (above Island Lake, 9 mi n of U.S. Highway 50); ne of Wrights Lake, above Island Lake 2590 Comment
  UC747401  Sedum rosea subsp. integrifolium G. Thomas Robbins 1944-7-28 1791 El Dorado immediately e Rockbound Pass (Desolation Valley Wilderness Area); , e of Rockbound Pass 2590 Comment
  CAS-BOT-BC59084  Sedum spathulifolium G. Thomas Robbins 1944-4-23 1564 El Dorado Chute Campe Road, on Canyon side above South Fork American River, about 4 miles north of Camino. 762 Comment
  UC964849  Selaginella hansenii G. Thomas Robbins 1944-4-23 1547 El Dorado ca. 5 mi n Camino (along Slab Creek near juncture with S. Fork American River) 609 Comment
  CAS-BOT-BC62111  Selaginella hansenii G. Thomas Robbins 1944-4-23 1547 El Dorado along Slab Creek near its juncture with South Fork American River, about 5 mi. n. of Camino 609 Comment
  UC747173  Senecio aronicoides G. Thomas Robbins 1943-4-25 1033 El Dorado about 3 mi e Camino (slope above North Fork Webber Creek); North Fork Webber Creek 975 Comment
  UC747214  Senecio aronicoides G. Thomas Robbins 1944-4-14 1528 Marin about 3 mi w Hamilton Field Air Base (near summit Big Rock Ridge); near summit Big Rock Ridge 304 Comment
  CAS-BOT-BC363293  Senecio aronicoides G. Thomas Robbins 1943-4-25 1033 El Dorado On canyon slope above North Fork Webber Creek, about 3 mi. e. of Camino 975 Comment
  SBBG62592  Senecio flaccidus var. douglasii J. R. and R. C. Robbins 1932-6-7 Tulare Sequoia Nat Park Rd 304 Comment
  UC907774  Senecio fremontii var. occidentalis G. Thomas Robbins 1945-8-12 2119 El Dorado se of Lake Tahoe (on w flank of Jobs Sister peak); Jobs Sister 3048 Comment
  SBBG62724  Senecio integerrimus J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  UC747185  Senecio integerrimus var. major G. Thomas Robbins 1943-6-4 1117 El Dorado 3 to 4 mi s Kyburz (near Sacramento Box Co. sawmill (China Flat), on slope above Silver Fork American River); Silver Fork American River 1371 Comment
  UC907749  Senecio integerrimus var. major G. Thomas Robbins 1945-7-8 2051 El Dorado near Velma Lakes; Desolation Valley Wilderness Area 2438 Comment
  CAS-BOT-BC364001  Senecio integerrimus var. major G. Thomas Robbins 1943-6-4 1117 El Dorado On slope above Silver Fork American River near Sacramento Box Co. sawmill (China Flat), 3-4 mi. s. of Kyburz 1371 Comment
  CAS-BOT-BC364006  Senecio integerrimus var. major G. Thomas Robbins 1945-7-8 2051 El Dorado Along trail near Velma Lakes 2438 Comment
  JEPS25002  Senecio jacobaea G. Thomas Robbins 1958-8-13 3926 Mendocino Mendocino City Comment
  JEPS7931  Senecio mohavensis G. Thomas Robbins with R. Bacigalupi, L. Constance, G. W. Gillett, and L. R. Heckard 1952-5-1 3510 Inyo lower reaches Titus Canyon; Death Valley National Monument, Grapevine Mountains, lower r 701 Comment
  UC747148  Senecio triangularis G. Thomas Robbins 1943-8-15 1340 El Dorado along small stream above Grouse Lake (2 1/2 mi ne of Wright's Lake); along small stream above Grouse Lake 2438 Comment
  RSA32359  Senecio triangularis G. Thomas Robbins 1943-8-15 1340 El Dorado Small stream above Grouse Lake, 2 1/2 miles northeast of Wrights Lake. 2439 Comment
  UC747210  Senecio triangularis G. Thomas Robbins 1943-7-25 1307 El Dorado along Desolation Valley trail above Tamarack Lake (about 2 mi nw of Echo Lake); Desolation Valley trail above Tamarack Lake 2286 Comment
  CAS-BOT-BC364738  Sericocarpus oregonensis subsp. californicus G. Thomas Robbins 1945-8-5 2086 El Dorado Along north shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area 2011 Comment
  UC747140  Sericocarpus oregonensis subsp. californicus G. Thomas Robbins 1945-8-5 2086 El Dorado along north shore of Rockbound Lake, Rockbound Valley Desolation Valley Wilderness Area, Rockbound Valley 2011 Comment
  CAS-BOT-BC364737  Sericocarpus oregonensis subsp. californicus G. Thomas Robbins 1943-8-21 1364 El Dorado In Eddy Arboretum, Institute of Forest Genetics, 3 mi. e. of Placerville 822 Comment
  UC747253  Sibbaldia procumbens G. Thomas Robbins 1943-7-25 1292 El Dorado slopes above and e Medley Lakes (Reservoir); Desolation Valley Wilderness Area 2590 Comment
  GH420825  Sidalcea asprella G. T. Robbins 1943-5-4 1068 Unknown Institute of Forest Genetics, 3 miles east of Placerville 822 Comment
  SBBG71463  Sidalcea glaucescens J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  UC746934  Sidalcea glaucescens G. Thomas Robbins 1944-7-28 1779 El Dorado 3 mi ne Wrights Lake (rocky slope along Willow Flat Trail); along Willow Flat Trail, ne of Wrights Lake 2438 Comment
  UC747479  Sidalcea glaucescens G. Thomas Robbins 1944-7-28 1779 El Dorado 3-4 mi ne Wrights Lake (rocky slope along Willow Flat Trail); along Willow Flat Trail, ne of Wrights Lake 2438 Comment
  UC746932  Sidalcea hirsuta G. Thomas Robbins 1943-7-8 1252 El Dorado about 3 mi e of Camino (above North Fork Webber Creek) 975 Comment
  UC746933  Sidalcea malviflora subsp. asprella G. Thomas Robbins 1945-5-20 1931 El Dorado near Simpson's Ranch (on bank above Sweetwater Creek); above Sweetwater Creek, near Simpson's Ranch 182 Comment
  OBI12311  Sidalcea malviflora subsp. laciniata G. Thomas Robbins, John Weiler 1959-5-23 4028 Contra Costa On the W side of Brooks Island, San Francisco Bay, Richmond Comment
  UC1084384  Sidalcea malviflora subsp. malviflora G. Thomas Robbins 1937-4-11 90 San Mateo along road to Woodside (above San Mateo); , rd to Woodside Comment
  CAS-BOT-BC384442  Silene antirrhina G. Thomas Robbins 1944-6-9 1666 El Dorado Near Institute of Forest Genetics, 3 mi. e. of Placerville 792 Comment
  UC746902  Silene bridgesii G. Thomas Robbins 1944-6-29 1744 El Dorado ca 3 mi e Camino (along North Fork Webber Creek); , e of Camino 914 Comment
  UC746834  Silene californica G. Thomas Robbins 1944-4-23 1558 El Dorado ca 4 mi nw Camino (along Chute Camp Road above Iowa Creek); above Iowa Creek, nw of Camino 762 Comment
  CAS-BOT-BC385904  Silene douglasii G. Thomas Robbins 1944-7-28 1775 El Dorado Willow Flat Trail, 3 mi. NE of Wrights Lake 2286 Comment
  CAS-BOT-BC389032  Silene laciniata subsp. californica G. Thomas Robbins 1944-4-23 1558 El Dorado Along Chute Camp Road above Iowa Creek, ca. 4 mi. NW of Camino 762 Comment
  UCD99007  Silene laciniata subsp. californica W. W. Robbins 1926-4-17 515 Nevada Grass Valley. Comment
  OBI19460  Silene laciniata subsp. laciniata G. Thomas Robbins, John Weiler 1959-8-8 4145 San Luis Obispo About 1.5 mi SE of Oso Flaco Lake 15 Comment
  JEPS25259  Silene laciniata subsp. major G. Thomas Robbins with John Weiler 1959-8-8 4145 San Luis Obispo about 1 1/2 mi se Oso Flaco Lake; se of Oso Flaco Lake 15 Comment
  RSA152182  Silene laciniata subsp. major G. Thomas Robbins, John Weiler 1959-8-8 4145 San Luis Obispo About 1.5 miles SE of Oso Flaco Lake. 15 Comment
  UC746838  Silene lemmonii G. Thomas Robbins 1943-6-5 1120 El Dorado 3-4 mi s Kyburz (near Sacramento Box Co. sawmill (China Flat), above Silver Fork American River); above Silver Fork American River, s of Kyburz 1371 Comment
  UC746903  Silene lemmonii G. Thomas Robbins 1944-6-7 1659 El Dorado ca 3 mi e Camino (above North Fork Webber Creek); , e of Camino 914 Comment
  CAS-BOT-BC389547  Silene nuda G. Thomas Robbins 1943-6-13 1171 El Dorado Along road to Park Creek, ca. 2 mi. w. of Park Creek 1219 Comment
  SEINET195651  Silene nuda G. Thomas Robbins 1943-6-13 1171 El Dorado Along road to Park Creek ca. two miles west of Park Creek. 1219 Comment
  CAS-BOT-BC389610  Silene sargentii G. Thomas Robbins 1943-9-5 1371 El Dorado On summit of Mt. Tallac 2956 Comment
  JEPS25117  Sinapis arvensis G. Thomas Robbins 1959-3-22 3962 Alameda near corner of Park Street and Watts Street (Emeryville); Emeryville 7 Comment
  OBI15167  Sinapis arvensis G. Thomas Robbins 1959-3-22 3962 Alameda Vacant lot near the corner of Park and Watts st, Emeryville 8 Comment
  CAS-BOT-BC75101  Sisymbrium altissimum G. Thomas Robbins 1943-4-28 1040 El Dorado Western edge of property of Institute of Forest Genetics. 792 Comment
  UCD115507  Sisymbrium altissimum Robbins; Raynor 1943-6-1 s.n. Modoc near Likely. Comment
  UC747017  Sisyrinchium bellum G. Thomas Robbins 1945-4-22 1845 El Dorado 2-3 mi nw of Shingle Springs 457 Comment
  UC747022  Sisyrinchium bellum G. Thomas Robbins 1944-4-14 1535 Marin 2 mi w of Hamilton Field Air Base; Big Rock Ridge 365 Comment
  UCSB895  Sisyrinchium bellum Robbins, G. 1937-4-4 Alameda Berkeley Hills Comment
  UC1084445  Sisyrinchium californicum G. Thomas Robbins 1937-5-23 200 Sonoma 10 mi w of Santa Rosa (on Pitkin Ranch); Vine Hill Region Comment
  UC747016  Sisyrinchium californicum G. Thomas Robbins 1944-5-16 1611 El Dorado 3 mi e of Camino (above North Fork Webber Creek) 914 Comment
  UC747020  Sisyrinchium californicum G. Thomas Robbins 1943-5-23 1082 El Dorado 3 mi e of Camino (along North Fork Webber Creek); North Fork Webber Creek 914 Comment
  UC747538  Smilacina racemosa G. Thomas Robbins 1943-5-23 1078 El Dorado 3 mi e Camino; North Fork Webber Creek 914 Comment
  SD188305  Solanum elaeagnifolium Jolynn Robbins 2006-9-4 57 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  UCD126963  Solanum triflorum Robbins; Raynor 1943-6-1 s.n. Modoc Corporation Ranch, Likely. Comment
  OBI15456  Solidago confinis G. Thomas Robbins, John Weiler 1959-8-7 4143 San Luis Obispo NW margin of Oso Flaco Lake 12 Comment
  JEPS15682  Solidago elongata G. Thomas Robbins 1956-9-14 3778 El Dorado about one-half mi nw Echo Summit (along U.S. Highway 50) 2225 Comment
  SD158195  Sonchus asper subsp. asper Jolynn Robbins 2004-4-19 7 San Diego Damon Lane County Park in El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  CAS-BOT-BC157268  Sorbus californica G. Thomas Robbins 1943-7-25 1287 El Dorado On slopes east of Medley Lakes, Desolation Valley Wilderness Area 2590 Comment
  UC747261  Sorbus scopulina var. cascadensis G. Thomas Robbins 1944-7-28 1771 El Dorado 2 mi n Wrights Lake (Willow Flat Creek along Willow Flat Trail) 2286 Comment
  UC747489  Sparganium emersum var. emersum G. Thomas Robbins 1943-8-15 1338 El Dorado n of Wrights Lake (8 mi n of U.S. Highway 50) Comment
  JEPS22015  Sparganium erectum subsp. stoloniferum G. Thomas Robbins 1958-6-14 3865 Alameda about 1.5 mi n Alvarado (along Mt. Eden Rd) 1 Comment
Read comments
Sep 25 2008
  JEPS22016  Sparganium erectum subsp. stoloniferum G. Thomas Robbins 1958-6-14 3865 Alameda about 1.5 mi n Alvarado (along Mt. Eden Rd) 1 Comment
  JEPS25109  Spergula arvensis G. Thomas Robbins 1959-4-5 3972 Alameda Oakland; vacant lot at corner of 61st St. and Shattuck Ave. 33 Comment
  UCD99219  Spergularia macrotheca var. macrotheca G. Thomas Robbins 1958-6-14 3871 Alameda near the end of Willow Road, along the road leading west of Plummer Landing, southwest of Newark. 3 Comment
  JEPS7991  Sphaeromeria cana G. Thomas Robbins, Peter H. Raven 1954-7-31 3645 Inyo upper reaches Lone Pine Canyon (along John Muir Trail between Consultation Lake and Lone Pine Lake); upper reaches Lone Pine Canyon 3352 Comment
  UC746911  Sphenosciadium capitellatum G. Thomas Robbins 1943-9-5 1382 El Dorado above Gilmore Lake (Mt. Tallac); along trail to Mt. Tallac, above Gilmore Lake 2590 Comment
  A345243  Spiraea densiflora G. T. Robbins 1943-7-25 1318 Unknown above east shore of upper Echo Lake, along Desolation Valley trail 2286 Comment
  UC747260  Spiraea densiflora G. Thomas Robbins 1945-8-4 2080 El Dorado n shore Rockbound Lake (Rockbound Valley); Desolation Valley Wilderness Area 2011 Comment
  RSA46950  Spiraea densiflora var. splendens G. Thomas Robbins 1945-8-4 2080 El Dorado Along N shore of Rockbound Lake. Rockbound Valley. Desolation Valley Wilderness Area. 2012 Comment
  UC746960  Spiranthes porrifolia G. Thomas Robbins 1943-7-8 1251 El Dorado about 3 mi e Camino (slope above creek); North Fork Webber Creek 975 Comment
  UC907675  Stachys ajugoides var. rigida G. Thomas Robbins 1944-7-6 1749 El Dorado 5 mi s Pollock Pines; Sly Park 975 Comment
  UCSB5870  Stachys rigida Robbins, G. 1937-5-16 Alameda Berkeley Hills Comment
  UC1057441  Stellaria media G. Thomas Robbins 1937-3-27 46 Sonoma Santa Rosa Comment
  JEPS25251  Stephanomeria cichoriacea G. Thomas Robbins with John Weiler 1959-8-6 Monterey 4.4 mi s Hot Springs Creek crossing (along State Highway 1) 76 Comment
  JEPS25261  Stephanomeria exigua subsp. carotifera G. Thomas Robbins with John Weiler 1959-8-8 4147 San Luis Obispo 1.5 mi se Oso Flaco Lake 15 Comment
  JEPS25288  Stephanomeria virgata subsp. pleurocarpa G. Thomas Robbins with Robert Ornduff and Howard Whisler 1959-10-26 4178 Tuolumne about one mi e Jacksonville (just w of Kanaka Creek, along State Highway 120 (paralleling Tuolumne River)); Tuolumne River 195 Comment
  UC747179  Stephanomeria virgata subsp. pleurocarpa G. Thomas Robbins 1943-10-16 1400 El Dorado 3 mi e Placerville (along roadway at Institute of Forest Genetics) 762 Comment
  POM197071  Streptanthus glandulosus L. F. Robbins 1927-4-15 s.n. Napa [no locality information provided] Comment
  UC747405  Streptanthus glandulosus subsp. pulchellus G. Thomas Robbins 1945-5-5 1870 Marin n-facing slope of ridge 2-3 mi w Hamilton Field Air Base; Big Rock Ridge 152 Comment
  CAS-BOT-BC87524  Streptanthus tortuosus G. Thomas Robbins 1944-4-23 1562 El Dorado South Fork American River, about 4 miles north of Camino. 762 Comment
  CAS-BOT-BC87525  Streptanthus tortuosus G. Thomas Robbins 1944-6-17 1708 El Dorado Above U.S. Highway 50, about 1 mile east of Pyramid Ranger Station. 1676 Comment
  CAS-BOT-BC87526  Streptanthus tortuosus G. Thomas Robbins 1945-6-17 1992 El Dorado Above Camp Creek, near Baltic Peak. 1036 Comment
  CAS-BOT-BC87527  Streptanthus tortuosus G. Thomas Robbins 1945-6-17 1992 El Dorado Above Camp Creek, near Baltic Peak. 1036 Comment
  GH422300  Streptanthus tortuosus G. T. Robbins 1944-6-17 1708 Unknown open southfacing slope above U.S. Highway 50, ca. 1 mi. east of Pyramid Ranger Station 1676 Comment
  UC747440  Streptanthus tortuosus var. orbiculatus G. Thomas Robbins 1943-7-25 1322 El Dorado slopes above e shore Echo Lake 2286 Comment
  JEPS7928  Stylocline micropoides G. Thomas Robbins with R. Bacigalupi, L. Constance, G. W. Gillett, and L. R. Heckard 1952-5-1 3494 Inyo Titus Canyon Death Valley National Monument, Grapevine Mountains (Grapevine Mountains, Death Valley National Monument) 1524 Comment
  UC747575  Styrax officinalis var. redivivus G. Thomas Robbins 1945-5-20 1934 El Dorado along Sweetwater Creek 3-4 mi s Salmon Falls; along Sweetwater Creek, s of Salmon Falls 182 Comment
  CAS-BOT-BC48039  Styrax redivivus G. Thomas Robbins 1945-5-20 1934 El Dorado Along Sweetwater Creek, 3-4 mi. s. of Salmon Falls. 182 Comment
  JEPS25020  Suaeda californica G. Thomas Robbins 1958-10-4 3944 Alameda near w end Williams St., San Leandro (at the edge of San Francisco Bay); San Francisco Bay, San Leandro Comment
  SEINET195482  Symphoricarpos albus G. Thomas Robbins 1944-6-29 1743 El Dorado North Fork Webber Creek about 3 miles east of Camino. 914 Comment
  UC747083  Symphoricarpos albus var. laevigatus G. Thomas Robbins 1942-10-22 916 El Dorado 5-6 mi ne Placerville (woods above Iowa Creek) 914 Comment
  SBBG69507  Symphoricarpos mollis J. R. and R. C. Robbins 1932-7-18 El Dorado W side, Lake Tahoe 2072 Comment
  UC747054  Symphoricarpos mollis G. Thomas Robbins 1944-6-29 1743 El Dorado ca 3 mi e Camino (along small tributary stream of North Fork Webber Creek); North Fork Webber Creek 914 Comment
  CAS-BOT-BC238919  Symphoricarpos rotundifolius G. Thomas Robbins 1944-7-28 1783 El Dorado Along Willow Flat Trail ca. 1/4 mi. w. of Rockbound Pass, Desolation Valley Wilderness Area 2438 Comment
  GH386440  Symphoricarpos rotundifolius G. T. Robbins 1945-8-12 2139 Unknown High Meadow on Freel Peak trail, 6-8 miles southeast of Lake Tahoe 2286 Comment
  GH386444  Symphoricarpos rotundifolius G. T. Robbins 1944-7-28 1783 Unknown rocky slopes along Willow Flat Trail ca. 1/4 mile west of Rockbound Pass, Desolation Valley Wilderness Area 2438 Comment
  UC747051  Symphoricarpos rotundifolius var. rotundifolius G. Thomas Robbins 1944-7-28 1783 El Dorado ca 0.25 mi w Rockbound Pass (slopes along Willow Flat Trail); Desolation Valley Wilderness Area 2438 Comment
  UC747100  Symphoricarpos rotundifolius var. rotundifolius G. Thomas Robbins 1943-7-25 1316 El Dorado woods along n shore Upper Echo Lake 2286 Comment
  UC747113  Symphoricarpos rotundifolius var. rotundifolius G. Thomas Robbins 1945-8-12 2139 El Dorado 6 to 8 mi se Lake Tahoe (slope w of High Meadow, on Freel Peak trail) 2286 Comment
  UCD81536  Symphyotrichum chilense W. W. Robbins; W. D. Norton 1927-10-1 s.n. Yolo West of Davis. Comment
  UCD81569  Symphyotrichum chilense W. W. Robbins; W. D. Norton 1927-10-1 830 Yolo West of Davis. Comment
  JEPS25277  Symphyotrichum frondosum G. Thomas Robbins 1959-9-27 4164 Alameda immedaitely w, e edge of San Francisco Bay, s of Powell st freeway interchange Eastshore Highway; San Francisco Bay, Emeryville Comment
  CAS-BOT-BC97911  Symphyotrichum frondosum G. Thomas Robbins 1959-9-27 4164 Alameda Immediately west of Eastshore Highway, at eastern edge of San Francisco Bay, a short distance south of the Powell St. Comment
  UCD136509  Symphyotrichum hendersonii Robbins; Raynor 1943-6-1 s.n. Plumas Belden. Comment
  UCD136631  Symphyotrichum spathulatum W. W. Robbins; W. D. Norton 1927-10-1 831 Yolo West of Davis. Comment
  JEPS8001  Syntrichopappus fremontii G. Thomas Robbins and Rimo Bacigalupi 1952-4-28 3466 Kern 3.5 mi e Walker Pass (along State Highway 178); Freeman Canyon 1295 Comment
  UC1084407  Taraxia ovata G. Thomas Robbins 1937-4-17 115 Contra Costa slopes near Point Richmond Comment
  A355457  Taxus brevifolia G. T. Robbins 1943-10-5 1397 Unknown ca. 3 mi. e. of Camino, El Dorado Co. 975 Comment
  UC747690  Taxus brevifolia G. Thomas Robbins 1943-10-5 1397 El Dorado ca. 3 mi E of Camino. 975 Comment
  JEPS21974  Tetragonia tetragonoides G. Thomas Robbins 1958-5-25 3839 Alameda just s of San Leandro Bay (and about 1/2 mi e of Maitland Drive, Alameda); Bay Farm Island Comment
  RSA46757  Thalictrum fendleri G. Thomas Robbins 1943-7-25 1291 El Dorado At edge of small lake on rocky slopes above Medley Lakes (reservoir) Desolation Valley Wilderness. 2591 Comment
  UCD117116  Thamnosma montana W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD115583  Thlaspi arvense Robbins; Raynor 1943-6-1 s.n. Modoc Corporation Ranch. Comment
  UC747361  Thysanocarpus curvipes G. Thomas Robbins 1944-4-14 1513 Marin 2-3 mi w Hamilton Field Air Base (on n slope of Big Rock Ridge); w of Hamilton Field Air BAse, n slope Big Rock Ridge 152 Comment
  UC747381  Thysanocarpus curvipes G. Thomas Robbins 1944-4-23 1551 El Dorado about 5 mi n Camino (on canyon side above South Fork American River); on canyon side above South Fork American River 762 Comment
  UC747430  Thysanocarpus curvipes G. Thomas Robbins 1945-5-27 1955 El Dorado about 1 mi n Pleasant Valley; n of Pleasant Valley 762 Comment
  UC1084484  Thysanocarpus radians G. Thomas Robbins 1938-4-15 260 Sonoma along road to Graton 6-7 mi w Santa Rosa Comment
  UCD116046  Thysanocarpus radians W. W. Robbins 1926-4-17 533 Nevada Grass Valley. Comment
  UCD97892  Tidestromia suffruticosa var. oblongifolia W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UCD121064  Tiquilia plicata W. W. Robbins 1939-12-24 s.n. San Diego SE part of county. Comment
  UC907667  Tonella tenella G. Thomas Robbins 1944-4-23 1553 El Dorado about 5 mi n Camino (along shore of South Fork American River, near Michigan-California Lumber Co. Railroad Tramway); South Fork American River 792 Comment
  CAS-BOT-BC81363  Torreya californica G. Thomas Robbins 1944-4-30 1579 El Dorado along South Fork Webber Creek, 3-4 mi. NE of Newtown 914 Comment
  UC747689  Torreya californica G. Thomas Robbins 1943-3-28 972 El Dorado above South Fork American River (alony Michigan-California Lumber Co. R.R.) 914 Comment
  UC747691  Torreya californica G. Thomas Robbins 1944-4-30 1579 El Dorado in shady places along South Fork Webber Creek 3-4 mi ne of Newtown; South Fork Webber Creek 914 Comment
  UC1084405  Toxicodendron diversilobum G. Thomas Robbins 1937-4-17 118 Contra Costa near Point Richmond Point Richmond Comment
  UC747309  Toxicodendron diversilobum G. Thomas Robbins 1944-4-14 1537 Marin hills immediately w. Hamilton Field Air Base 30 Comment
  JEPS7983  Trichophorum clementis G. Thomas Robbins, Peter H. Raven 1954-7-19 3621 Inyo meadow at edge of stream outlet Consultation Lake; Lone Pine Canyon, edge stream outlet Consultation Lake 3590 Comment
  JEPS15712  Trichostema lanceolatum G. Thomas Robbins 1956-9-7 3742 El Dorado 4 mi W of Shingle Springs (US Hwy 50) 350 Comment
  SD185761  Trichostema lanceolatum Jolynn Robbins 2006-9-4 54 San Diego Damon Lane County Park in south El Cajon. South on Jamacha to Fury, turn right. Then right on Wieghorst, left on Calle Albara. 68 Comment
  UC747558  Trichostema lanceolatum G. Thomas Robbins 1943-7-8 1250 El Dorado 3 mi E of Camino (above North Fork Webber Creek) 975 Comment
  GH402451  Trichostema lanceolatum G. T. Robbins 1943-7-8 1250 Unknown North Fork Webber Creek, about 3 miles east of Camino 975 Comment
  UCD143672  Trifolium barbigerum W. W. Robbins 1928-4-29 955 Sacramento American River. Comment
  UC746995  Trifolium breweri G. Thomas Robbins 1944-6-11 1673 El Dorado 2-3 mi ne Riverton (along Ice House Rd) 1219 Comment
  UC1084487  Trifolium fucatum G. Thomas Robbins 1938-5-19 263 Sonoma sw Santa Rosa (along Sandy Point Rd) Comment
  JEPS8229  Trifolium incarnatum G. Thomas Robbins 1954-5-8 3618 Marin 1 mi w Ignacio (upper end of Arroyo San Jose) 30 Comment
  UC746993  Trifolium longipes var. hansenii G. Thomas Robbins 1944-6-17 1706 El Dorado ca 1 mi e Pyramid Ranger Station (along bank of South Fork American River) 1676 Comment
  JEPS25147  Trifolium macraei G. Thomas Robbins 1959-5-17 4017 Alameda just ne junction of Park Blvd, Skyline Blvd, and Manzanita Dr (at summit of hills); Okland Hills, Contra Costa County boundary Comment
  UC747293  Trifolium microcephalum G. Thomas Robbins 1943-4-30 1054 El Dorado 3 mi e Placerville (slope w of the Institute of Forest Genetics) 762 Comment
  UC747242  Trifolium monanthum var. monanthum G. Thomas Robbins 1943-9-5 1391 El Dorado Dick Pass Tahoe-Yosemite trail Comment
  UC746984  Trifolium variegatum var. melananthum G. Thomas Robbins with J. T. Howell 1945-5-9 1895 Marin 1/2 mi n Hamilton Field Air Force Base Comment
  JEPS25101  Trifolium variegatum var. variegatum G. Thomas Robbins 1959-4-11 3975 Alameda ca 1/4 mi n west end of Depot Rd (just e of the American Salt Co. evaporating ponds along the San Francisco Bay shore, ca 1 3/4 mi nw of Mt. Eden and 3/4 mi s of Russell) 1 Comment
  JEPS25111  Trifolium willdenovii G. Thomas Robbins 1959-4-5 3970 Alameda at corner of 61st St. and Shattuck Ave. vacant lot; Oakland 33 Comment
  UC746988  Trifolium willdenovii G. Thomas Robbins 1945-5-17 1911 El Dorado ca 3 mi e Camino (above North Fork Webber Creek) 1005 Comment
  JEPS22043  Triglochin maritima G. Thomas Robbins 1958-7-4 3886 Alameda about 1/4 mi s East Creek Slough (at the ne edge of San Leandro Bay, Oakland); nw edge San Leandro Bay, Oakland Comment
  JEPS25149  Triglochin maritima G. Thomas Robbins with S. Galen Smith 1959-5-21 4019 Alameda w edge of Eastshore Hwy just s Emeryville interchange (Powell St.); San Francisco Bay, Emeryville Comment
  CAS-BOT-BC519075  Trillium angustipetalum G. Thomas Robbins 1943-4-10 984 El Dorado Along bank of North Fork Webber Creek, 3 miles east of Camino 944 Comment
  UC1057438  Trillium chloropetalum G. Thomas Robbins 1937-3-26 27 Sonoma creek along rd. e. of Bodega Bay Comment
  UC747120  Triphysaria eriantha subsp. eriantha G. Thomas Robbins 1945-4-22 1858 El Dorado about 2 1/2 mi e Shingle Springs; e of Shingle Springs 457 Comment
  JEPS23260  Triphysaria pusilla G. Thomas Robbins 1959-4-26 4004 Contra Costa about 1/4 mi n San Pablo Oil Tank Farm (open slope about 1 mi ne of Giant) 15 Comment
  JEPS7449  Triphysaria pusilla G. Thomas Robbins 1952-4-5 3411 Mendocino in upper Van Damme State Park (about 3 mi se of Little River); in upper Van Damme State Park, se of Little River Comment
  JEPS19394  Triphysaria versicolor subsp. faucibarbata G. Thomas Robbins 1937-6-6 238 Sonoma along roadside near Bodega Bay; near Bodega Bay Comment
  JEPS19396  Triphysaria versicolor subsp. faucibarbata G. Thomas Robbins 1938-4-15 262 Sonoma along road to Graton 6-7 mi w Santa Rosa Comment
  SEINET195676 Image available Triteleia hyacinthina G. Thomas Robbins 1944-6-27 1714 El Dorado North Fork Webber Creek about 3 miles east of Camino 975 Comment
  UC747517  Triteleia hyacinthina G. Thomas Robbins 1943-4-18 1010 Sacramento 15 mi ne Sacramento (Carmichael District); Carmichael District Comment
  UC747540  Triteleia hyacinthina G. Thomas Robbins 1944-6-27 1741 El Dorado above North Fork Webber Creek (ca 3 mi e of Camino) 975 Comment
  CAS-BOT-BC522281  Triteleia hyacinthina G. Thomas Robbins 1943-4-18 1010 Sacramento Carmichael district, 15 mi. NE of Sacramento Comment
  CAS-BOT-BC522101  Triteleia ixioides subsp. scabra G. Thomas Robbins 1945-5-20 1945 El Dorado Along Deer Valley Road, northwest of Rescue 304 Comment
  UC747524  Triteleia ixioides subsp. scabra G. Thomas Robbins 1945-5-20 1945 El Dorado nw of Rescue (along Deer Valley Road) 304 Comment
  CAS-BOT-BC525786  Triteleia ixioides subsp. unifolia G. Thomas Robbins 1943-4-29 1048 El Dorado C.C.C. Camp Snowline, 3 mi. e. of Camino 1036 Comment
  SEINET195641  Triteleia laxa G. Thomas Robbins 1943-4-18 1009 Sacramento Carmichael district 15 miles Northeast of Sacramento Comment
  UC747530  Triteleia laxa G. Thomas Robbins 1943-4-18 1009 Sacramento 15 mi ne Sacramento; Carmichael district Comment
  CAS-BOT-BC526519  Triteleia laxa G. Thomas Robbins 1943-4-18 1009 Sacramento Carmichael district, 15 miles NE of Sacramento Comment
  JEPS8336  Tropidocarpum gracile G. Thomas Robbins and Rimo Bacigalupi 1952-4-26 3467 Kern along State Hwy 178 3.5 mi e Walker Pass; Freeman Canyon 1295 Comment
  UCD134691  Tsuga heterophylla W. W. Robbins 1941-11-1 s.n. Del Norte Fort Dick. Comment
  UC747687  Tsuga mertensiana G. Thomas Robbins 1943-6-27 1211 El Dorado rocky ridge above Echo Summit Pass (about 0.75 mi sw of U. S. Highway 50) 2438 Comment
  SD158039  Urtica urens Jolynn Robbins 2004-4-5 2 San Diego Damon Lane County Park in El Cajon. South on Jamacha, right on Fury. Then right on Wieghorst, left on Calle Albara. 68 Comment
  SBBG58426  Vaccinium cespitosum J. R. and R. C. Robbins 1932-7-16 Tuolumne Tioga Pass Rd Comment
  GH363257  Vaccinium parvifolium G. T. Robbins 1945-8-5 2083 Unknown rocky slope along north shore of Rockbound Lake, Rockbound Valley, Desolation Valley Wilderness Area 2011 Comment
Read comments
Feb 8 2016
  CAS-BOT-BC199401  Vaccinium shastense subsp. nevadense G. Thomas Robbins 1944-5-28 1639 El Dorado Along borders of Long Creek, 1-2 mi. from its confluence with South Fork American River 762 Comment
  UC747654  Vaccinium shastense subsp. nevadense G. Thomas Robbins 1944-5-28 1639 El Dorado Along borders of Long Creek, 1-2 mi from its confluence with South Fork American River 762 Comment
  CAS-BOT-BC193418  Vaccinium uliginosum G. Thomas Robbins 1944-7-30 1825 El Dorado Along shore of Grouse Lake, 2 1/2 mi NE of Wrights Lake 2590 Comment
  UC907733  Valerianella locusta G. Thomas Robbins 1945-5-20 1935 El Dorado on slope above Sweetwater Creek; above Sweetwater Creek 182 Comment
  SD135139  Venegasia carpesioides Marya Robbins 1992-5-5 San Diego Camp Pendleton, Yankee 2 training area. Level bottom of valley between San Mateo and Jardine Canyons Comment
  UC747548  Veratrum californicum var. californicum G. Thomas Robbins 1943-7-25 1315 El Dorado along n shore Upper Echo Lake 2286 Comment
  UCD125991  Verbena lasiostachys G. Thomas Robbins 1953-5-30 3542 Tulare road to Balch Park, about one-half mile east of Milo junction and 7.5 miles north of Springville. 609 Comment
  JEPS8062  Verbena lasiostachys var. lasiostachys G. Thomas Robbins and Lawrence R. Heckard 1953-5-30 3542 Tulare 7.5 mi n Springville (on road to Balch Park, ca 1/2 mi e of Milo junction) 609 Comment
  JEPS14532  Veronica peregrina subsp. xalapensis G. Thomas Robbins with Peter H. Raven 1956-4-28 3668 Sacramento near Sacramento Airport (along Freeport Blvd.); Freeport Blvd. Comment
  JEPS15541  Veronica serpyllifolia subsp. humifusa G. Thomas Robbins with L. R. Heckard 1956-7-25 3699 Lake at e base of ridge that forms a se extension of Snow Mountain West (about 1/2 mi airline from its summit, into the headwaters of Bear Creek, a trib. of Rice Fork of Eel River) 1981 Comment
  UC1084414  Vicia americana var. americana G. Thomas Robbins 1937-4-11 104 San Mateo near Redwood City Comment
  UC746980  Vicia americana var. americana G. Thomas Robbins 1943-4-29 1046 El Dorado 3 mi e Camino (along U.S. Highway 50, at C.C.C. Camp Snowline) 1036 Comment
  UC1084368  Vicia sativa G. Thomas Robbins 1937-3-26 34 Sonoma just e Bodega (along road to Bodega) Comment
  JEPS25122  Vicia sativa subsp. nigra G. Thomas Robbins 1959-4-18 3988 Contra Costa about 0.5 mi e Pt. San Pablo (overlooking San Pablo Bay, Richmond); Richmond 7 Comment
  UC907694  Vicia sativa subsp. nigra G. Thomas Robbins 1943-5-7 1076 El Dorado 3 mi e Placerville; Institute of Forest Genetics Arboretum 822 Comment
  UCD108957  Vicia sativa subsp. sativa G. Thomas Robbins 1959-4-18 3988 Contra Costa On slope overlooking San Pablo Bay, about 1/2 mile east of Pt. San Pablo, Richmond. 7 Comment
  SBBG69169  Viola adunca J. R. and R. C. Robbins 1932-7-14 Mariposa Chinquapin to Glacier Point Comment
  UC1084480  Viola adunca G. Thomas Robbins 1938-4-15 253 Sonoma about 2.5 mi e of Bodega Bay Comment
  UC907737  Viola adunca G. Thomas Robbins 1945-7-1 2022 El Dorado near Wrights Lake 2133 Comment
  UC907739  Viola adunca G. Thomas Robbins 1945-7-1 2020 El Dorado 4 mi s of Wrights Lake (near Lyons Creek along road) 2042 Comment
  SEINET195171 Image available Viola bakeri G. T. Robbins 1945-7-1 2019 El Dorado Near Lyons Creek along road ca. 4 mi. S. of Wrights Lake 2042 Comment
  SEINET195644 Image available Viola glabella G. T. Robbins 1943-6-27 1226 El Dorado Near Echo Summit Pass 2286 Comment
  CAS-BOT-BC530184  Viola lobata G. Thomas Robbins 1943-6-5 1121 El Dorado above Silver Fork American River near Sacramento Box Sawmill - China Flat, 2-3 miles S of Kyburz 1371 Comment
  SEINET195649 Image available Viola lobata G. T. Robbins 1943-6-5 1121 El Dorado Above Silver Fork American River near Sacramento Box Sawmill ('China Flat') 2-3 mi. s. of Kyburz 1372 Comment
  UC746942  Viola lobata subsp. lobata G. Thomas Robbins 1943-6-5 1121 El Dorado Above Silver Fork American River (near Sacramento Box Sawmill (China Flat), 2-3 mi s of Kyburz) 1371 Comment
  UC746945  Viola macloskeyi G. Thomas Robbins 1944-5-7 1587 a El Dorado 5 mi s of Pollock Pines (n of Sly Park Meadow, along tributary of Park Creek); Park Creek 1005 Comment
  SBBG78628  Viola pedunculata R. C. and J. R. Robbins -Mar-1921 Santa Barbara Santa Cruz Island Comment
  UC1057444  Viola pedunculata G. Thomas Robbins 1937-4-11 84 San Mateo on slopes above Spring Valley Lake (s of San Francisco) Comment
  GH381949  Viola purpurea G. T. Robbins 1945-7-1 2035 Unknown 1/2 mi. n. of Wrights Lake (T. 12N., R. 16E., Sec. 26 & 27) 2133 Comment
  SEINET195639 Image available Viola purpurea subsp. mohavensis G. T. Robbins 1945-7-1 2035 El Dorado 1/2 mi. N of Wrights Lake also in sec. 27 2134 Comment
  SEINET195637 Image available Viola sheltonii G. Thomas Robbins 1943-4-10 982 El Dorado North Fork Webber Creek about 3 mi E of Camino 945 Comment
  CAS-BOT-BC270058  Viola tomentosa G. Thomas Robbins 1944-6-18 1731 El Dorado Above North Fork Cosumnes RIver at Capps Crossing, El Dorado National Forest 1584 Comment
  CAS-BOT-BC270059  Viola tomentosa G. Thomas Robbins 1945-8-5 2099 El Dorado Ca. 1 mile W of Wentworth Springs 1828 Comment
  UC1716059  Viola tomentosa G. Thomas Robbins 1944-6-18 1731 El Dorado above North Fork Cosumnes River at Capps Crossing El Dorado National Forest 1524 Comment
  UC746935  Viola tomentosa G. Thomas Robbins 1945-8-5 2099 El Dorado 1 mi w of Wentworth Springs (along road) 1828 Comment
  UCD102812  Vitis californica Robbins and Raynor 1943-6-1 s.n. Plumas Feather River Canyon near Virgilia. Comment
  SEINET197066 Image available Vulpia microstachys var. pauciflora G. Thomas Robbins 1920 El Dorado Along Placerville-Rescue road, 3 mi. E. of Rescue. 457 Comment
  UCD116384  Wislizenia refracta W. W. Robbins; A. S. Crafts 1931-9-18 2258 Stanislaus Modesto - Justine. Comment
  UC747211  Wyethia glabra G. Thomas Robbins with J. T. Howell 1945-5-9 1891 Marin 1 mi n Ignacio 0 Comment
  CAS-BOT-BC383374  Wyethia helenioides G. Thomas Robbins 1944-5-5 1583 El Dorado Near Institute of Forest Genetics, about 3 mi. e. of Placerville 762 Comment
  UC747162  Wyethia helenioides G. Thomas Robbins 1944-5-5 1583 El Dorado about 3 mi e Placerville (near Institute of Forest Genetics) 762 Comment
  UC747154  Wyethia mollis G. Thomas Robbins 1945-7-8 2040 El Dorado in pine woods near Al Tahoe; Lake Tahoe 1920 Comment
  GH414705  Wyethia reticulata G. T. Robbins 1945-6-30 2013 Unknown Rescue Comment
  GH414706  Wyethia reticulata G. T. Robbins 1945-6-30 2013 Unknown Extending along Green Valley Road for 1/4 mi. immediately w. of Rescue (T.10N, R.9E, Sec. 23) 396 Comment
  GH414707  Wyethia reticulata G. T. Robbins 1945-5-20 1946 Unknown 2 localities along Deer Valley Road, 100 yrds. & 1 mi. no. of Rescue 396 Comment
  RSA76142  Wyethia reticulata G. Thomas Robbins 1945-6-30 2013 El Dorado Along Green Valley Road for 1/4 mile, immediately W of Rescue. 396 Comment
  RSA76143  Wyethia reticulata G. Thomas Robbins 1945-6-30 2013 El Dorado Along Green Valley Road for 1/4 mile, immediately W of Rescue. 396 Comment
  SEINET8734376 Image available Wyethia reticulata G. Thomas Robbins 1945-1 2013 El Dorado along Green Valley Road for 1/4 mi. immediately w. of Rescue (T.10N, R.9E, Sec. 23) 396 Comment
  SD45203  Xylorhiza tortifolia G. Thomas Robbins 1950-4-7 3328 Inyo ca. 0.5 mile north and east of Little Lake 910 Comment
  UC746909  Yabea microcarpa G. Thomas Robbins 1944-5-21 1618 El Dorado ca 3 mi e Camino (on canyon slope above North Fork Webber Creek) 975 Comment
  JEPS25085  Zannichellia palustris G. Thomas Robbins 1958-10-11 3951 Alameda w. end of Boxwood Ave. San Leandro (canal in s.w. San Leandro) Comment
  UC747519  Zigadenus exaltatus G. Thomas Robbins 1943-5-2 1060 El Dorado canyon slope above creek about 3 mi e Camino; North Fork Webber Creek 914 Comment
  CAS-BOT-BC530971  Zigadenus exaltatus G. Thomas Robbins 1943-5-2 1060 El Dorado On canyon slope above North Fork Webber Creek, about 3 miles e. of Camino 914 Comment
  UC747543  Zigadenus fremontii G. Thomas Robbins 1944-4-14 1501 Marin n-facing slopes Big Rock Ridge (about 3 mi w of Hamilton Field Air Base) 152 Comment
  UC1084438  Zigadenus fremontii G. Thomas Robbins 1940-3-21 297 Sonoma Canyon e Chalk Hill Road (5-6 mi e of Windsor); slope of Barnes Creek 121 Comment
  UC747013  Zigadenus venenosus var. venenosus G. Thomas Robbins 1944-7-28 1782 El Dorado near Rockbound Pass (Willow Flat Trail); Desolation Valley Wilderness Area 2438 Comment
  UC747544  Zigadenus venenosus var. venenosus G. Thomas Robbins 1944-6-18 1716 El Dorado 5 mi s Pollock Pines; Sly Park 1005 Comment
  CAS-BOT-BC534308  Zigadenus venenosus var. venenosus G. Thomas Robbins 1944-6-18 1716 El Dorado Sly Park, 5 mi. s. of Pollock Pines 1005 Comment
  RSA32301  Zigadenus venenosus var. venenosus G. Thomas Robbins 1944-7-28 1782 El Dorado Along Willow Flat Trail near Rockbound Pass, Desolation Valley Wilderness Area 2439 Comment
  UCD107422  Zygophyllum fabago Robbins; Raynor 1943-6-24 s.n. Stanislaus Syrian Bean Caper, Patterson. Comment



  Copyright © 2019 Regents of the University of California — Updated 11 January 2019
0.12 processing seconds