Search Results — 2000 specimen records retrieved (1706 records with coordinates)
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Results for search: Collector=Thomas;   

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

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC77959  Abies bracteata J. H. Thomas 1949-10-30 1210 Monterey Miller's Canyon from about 4300 feet downward; Vicinity of China Camp, between Jamesburg and Tassajara [Hotsprings] 1524 Comment
  CAS-BOT-BC78066  Abies grandis Hazelle A. Thomas; John H. Thomas 1955-6-25 657 Mendocino Near State Highway No. 1, about 3.2 miles south of town of Fort Bragg 45 Comment
  VVC2508  Abies magnifica Tim Thomas, P. J. MacKay 2004-7-14 3477 Inyo Southern High Sierra, Cottonwood Lakes Basin; just east of Lk 5. 3433 Comment
  CAS-BOT-BC177051  Acacia dealbata John H. Thomas 1950-3-26 1321 Santa Cruz Between Big Basin and Hilton Airport, about 1 mile NW of the Airport 274 Comment
  CAS-BOT-BC177052  Acacia dealbata John H. Thomas 1953-2-1 2745 Santa Cruz Near Pasatiempo Golf Course near Santa Cruz 91 Comment
  CAS-BOT-BC177063  Acacia longifolia John H. Thomas 1953-2-23 2811 Santa Cruz Along High Street between Bay Street and Spring Street near Bay Street Reservoir, City of Santa Cruz Comment
  RSA187361  Acacia melanoxylon John H. Thomas 1953-3-8 2839 Santa Cruz Near Southern Pacific RR tracks and State Park Drive, near Aptos. Comment
  CAS-BOT-BC451131  Acaena pinnatifida var. californica John H. Thomas 1961-5-12 9328 San Mateo San Bruno Mountain in northern part of county. Northern Coastal Scrub of Munz and Keck. 396 Comment
  CAS-BOT-BC451137  Acaena pinnatifida var. californica John H. Thomas 1955-4-6 4865 San Francisco North peak, Twin Peaks 274 Comment
  CAS-BOT-BC333270  Acer macrophyllum J. H. Thomas 1954-4-30 4005 Santa Clara About 1.5 miles from Saratoga up Campbell Creek 243 Comment
  JROH157  Acer macrophyllum John H. Thomas 1974-11-5 17664 San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail below dam 114 Comment
  JROH158  Acer macrophyllum John H. Thomas 1975-6-5 17948 San Mateo Jasper Ridge Biological Preserve, Stanford University. Below Searsville Dam 91 Comment
  JROH159  Acer macrophyllum John H. Thomas 1975-6-5 17948 San Mateo Jasper Ridge Biological Preserve, Stanford University. Below Searsville Dam 91 Comment
  RSA132389  Acer macrophyllum John H. Thomas 1953-6-13 3329 Santa Cruz Mt. Charley Road, about 0.4 mile west of summit of Santa Cruz-Los Gatos Highway. 595 Comment
  UCSB68102  Acer macrophyllum Kathryn Thomas, Kathy Rindlaub, Lynn Houng 1993-5-16 SR- 260 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Blue schist watershed 533 Comment
  JROH167  Acer negundo John H. Thomas 1968-3-17 14175 San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake 106 Comment
  JROH168  Acer negundo John H. Thomas 1968-3-17 14175 San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake 106 Comment
  JROH169  Acer negundo John Hunter Thomas 1978-7-8 19258 San Mateo Jasper Ridge Biological Preserve, Stanford University 85 Comment
  CAS-BOT-BC336931  Acer negundo var. californicum J. H. Thomas; T. C. Fuller; G. D. Barbe 1980-4-29 53406 Siskiyou Fort Jones 853 Comment
  CAS-BOT-BC336932  Acer negundo var. californicum John H. Thomas 1953-5-31 3283 Santa Cruz Along Parajo River about 5.5 miles east of Watsonville Comment
  CAS-BOT-BC18751  Achillea millefolium J. H. Thomas 1981-4-20 20366 Sutter Sutter Buttes. Dean Place. 213 Comment
  CAS-BOT-BC18855  Achillea millefolium J. H. Thomas 1952-5-31 3278 Santa Cruz Sunset Beach State Park 6 Comment
  CAS-BOT-BC30083  Achillea millefolium J. H. Thomas 1976-6-15 18268 Sonoma Southern end of Sea Ranch, northwestern part of county, about 7 miles south of Gualala 30 Comment
  JROH442  Achillea millefolium John H. Thomas 1967-5-31 12934 San Mateo Jasper Ridge Biological Preserve, Stanford University 120 Comment
  JROH447  Achillea millefolium John Hunter Thomas 1980-5-8 19954 San Mateo Jasper Ridge Biological Preserve, Stanford University 124 Comment
  JROH448  Achillea millefolium John Hunter Thomas 1981-4-23 20489 San Mateo Jasper Ridge Biological Preserve, Stanford University 130 Comment
  JROH449  Achillea millefolium John Hunter Thomas 1983-6-29 22701 San Mateo Jasper Ridge Biological Preserve, Stanford University; top of Rattlesnake Rock 105 Comment
  RSA713298  Achillea millefolium Cassandra Thomas, Naomi Fraga, Laura Condon 2006-7-14 1 Tulare Lamont Meadows 1738 Comment
  VVC2593  Achillea millefolium Tim Thomas 1983-7-28 669 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin Watershed. Old trail about 1/2 mile below Golden trout Camp on east side of drainage 3091 Comment
  CAS-BOT-BC210750  Achnatherum nelsonii H. A. Thomas; J. H. Thomas 1954-7-24 4513 Siskiyou Salmon - Trinity Mts. Vicinity of Rush Lake and Rush Creek Meadow. About 9 miles E of Cecilville 1981 Comment
  JROH463  Achyrachaena mollis John H. Thomas 1971-4-10 15754 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH475  Achyrachaena mollis John Hunter Thomas 1988-5-3 24447 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA137300  Achyrachaena mollis John H. Thomas 1956-5-2 5693 Santa Clara Monte Bello Ridge, about 5 miles south of Los Altos 671 Comment
  CAS-BOT-BC29134  Achyrachaena mollis J. H. Thomas 1954-4-19 3911 Santa Clara Stanford University Campus, near intersection of Stanford and Mayfield Avenues. 15 Comment
  RSA176545  Achyrachaena mollis John H. Thomas 1963-5-3 10046 Santa Clara 838 Cedro Way, Stanford Comment
  JROH2076  Acmispon glaber var. glaber John Hunter Thomas 1989-5-11 24728 San Mateo Jasper Ridge Biological Preserve, Stanford University; near hillside laboratory 157 Comment
  JROH2078  Acmispon strigosus John H. Thomas 1963-5-12 10083 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2086  Acmispon wrangelianus John H. Thomas 1956-4-7 5614 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2096  Acmispon wrangelianus John H. Thomas 1970-4-29 15617 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2098  Acmispon wrangelianus John H. Thomas 1974-4-4 17078 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC391539  Aconitum columbianum subsp. columbianum H. A. Thomas; J. H. Thomas 1954-7-25 4521 Siskiyou Salmon - Trinity Mts. Vicinity of Rush Lake and Rush Creek Meadow. About 9 miles E of Cecilville 1981 Comment
  CAS-BOT-BC391679  Actaea rubra J. H. Thomas 1963-5-6 10062 San Mateo Summit of La Honda Road at Skyline Blvd. 609 Comment
  CAS-BOT-BC29308  Adenocaulon bicolor John H. Thomas 1953-7-28 3530 Santa Cruz Between Big Basin and Drinking Fountain 563 Comment
  CAS-BOT-BC132946  Adenostoma fasciculatum John H. Thomas 1975-4-27 17826 San Benito Pinnacles National Monument, Pinnacles Loop Trail 762 Comment
  CAS-BOT-BC139908  Adenostoma fasciculatum J. H. Thomas 1950-6-5 1951 Santa Cruz About 1/2 mile below Saratoga Summit, along an abandoned road which runs toward the Ranger Station 609 Comment
  UCSB2723  Adenostoma fasciculatum var. fasciculatum Thomas, Cynthia 1959-7-23 Santa Barbara 2 mi. past Kinevan Canyon on Camino Cielo 762 Comment
  CAS-BOT-BC65677  Adiantum jordanii J. H. Thomas 1950-3-30 1399 Santa Cruz Soquel Valley, 1 mile south of Mountain School Comment
  JROH90  Adiantum jordanii John H. Thomas 1976-4-2 18077 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH92  Adiantum jordanii John Hunter Thomas 1981-4-5 20285 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek Comment
  UCSB68039  Adiantum jordanii Kathryn Thomas, Kathy Rindlaub, Lynn Houng 1993-5-16 SR- 275 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Ridge divide between Lisque/Figueroa and Tranquility Valley Road 487 Comment
  JROH2706  Aesculus californica John H. Thomas 1969-5-28 15086 San Mateo Jasper Ridge Biological Preserve, Stanford University 134 Comment
  JROH2708  Aesculus californica John H. Thomas 1971-5-30 15972 San Mateo Jasper Ridge Biological Preserve, Stanford University 120 Comment
  RSA126391  Aesculus californica John H. Thomas 1953-5-31 3314 Santa Cruz Northeast of Soda Lake. 152 Comment
  UCSB68126  Agoseris Kathryn Thomas, Wayne Ferren 1993-4-20 SR- 147 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Upper end vernal valley 353 Comment
  CAS-BOT-BC21358  Agoseris aurantiaca var. aurantiaca J. H. Thomas; H. A. Thomas 1955-9-10 5445 Fresno Vicinity of Mono Pass, Pioneer Basin. Along Golden Creek between 4th Recess and Golden Lake 3352 Comment
  VVC3031  Agoseris grandiflora Tim Thomas, Matt Willis 2014-6-25 6397 Tulare Southern Sierra Nevada Western Divide, Vicinity of Quaking Aspen Camp 2152 Comment
  CAS-BOT-BC22740  Agoseris grandiflora var. grandiflora J. H. Thomas 1958-4-18 7100 San Francisco Corona Heights 152 Comment
  JROH485  Agoseris grandiflora var. grandiflora John Hunter Thomas 1981-5-25 20638 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH492  Agoseris heterophylla John Hunter Thomas 1978-4-20 19074 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1125446  Agoseris parviflora W. D. Thomas 1935-7-9 161 Alpine .5 mi nne Colorado Hill; Markleeville Quad. 2072 Comment
  JROH4772  Agrostis avenacea John Hunter Thomas 1980-9-27 20197 San Mateo Jasper Ridge Biological Preserve, Stanford University; old bathing beach area in weeds near water's edge 120 Comment
  RSA195602  Agrostis capillaris John H. Thomas 1958-8-31 7460 Santa Clara Lawn weeds of the Stanford campus. In front Chemistry Bldg. Flowering at edge of lawn. Comment
  CAS-BOT-BC127466  Agrostis densiflora John H. Thomas 1963-5-20 10153 San Mateo Ano Nuevo Island, about 0.5 mile off shore and about 20 miles northwest of Santa Cruz. Comment
  CAS-BOT-BC138554  Agrostis variabilis H. A. Thomas; J. H. Thomas 1955-9-10 5450 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess and adjacent Mono Creek. Along shores of Golden Lake. 3352 Comment
  CAS-BOT-BC138558  Agrostis variabilis H. A. Thomas; J. H. Thomas 1955-9-8 5385 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess and adjacent Mono Creek. 3048 Comment
  CAS-BOT-BC138436  Aira caryophyllea John H. Thomas 1973-4-23 16618 San Benito Pinnacles National Monument. Rim Trail from Bear Gulch Reservoir to High Peaks Trail. Comment
  RSA159442  Aira caryophyllea John H. Thomas 1961-5-23 9455 San Mateo Portola State Park, near junction of Peters and Pescadero Creeks. 152 Comment
  CAS-BOT-BC138224  Aira caryophyllea var. caryophyllea J. H. Thomas 1950-5-14 1882 Santa Cruz Ben Lomond Sand Hills, near summit of Quail Hollow Road on Ben Lomond side. 152 Comment
  CAS-BOT-BC138228  Aira caryophyllea var. caryophyllea J. H. Thomas 1953-5-23 3201 Santa Cruz Saint Mary of the Palms, summer girls' camp near Glenwood. 304 Comment
  CAS-BOT-BC138302  Aira caryophyllea var. caryophyllea Hazelle A. Thomas; John H. Thomas 1955-6-25 627 Mendocino Along Fort Bragg - Willits Road. Near Old Camp 19, between Whiskey Springs Fire Camp and Dunlap, 11.5 miles inland from the coast. 91 Comment
  CAS-BOT-BC138188  Aira praecox John H. Thomas 1976-6-16 18339 Sonoma Southern part of Sea Ranch, northwestern part of county, about 7 miles south of Gualala. 30 Comment
  CAS-BOT-BC180666  Albizia lophantha John H. Thomas 1958-7-15 7334 San Francisco Sutro Heights near Point Lobos, San Francisco 30 Comment
  VVC2032  Allium bisceptrum Tim Thomas, PJ MacKay 2005-6-5 3819 San Bernardino San Bernardino Mtns., East of Holcomb Valley on FS Rd 3N16; sec 35 T3N;R1E. 2241 Comment
  UCR240521  Allium campanulatum Tim Thomas, P. J. MacKay 2004-5-8 3338 San Bernardino San Bernardino Mountains, above [south of] Cactus Flat, west of Hwy 18 1991 Comment
  CAS-BOT-BC469360  Allium hyalinum J. H. Thomas 1949-4-24 s.n. Santa Clara Pacheco Pass Comment
  JROH4557  Allium peninsulare var. franciscanum John H. Thomas 1971-5-30 15963 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  CAS-BOT-BC475497  Allium triquetrum J. H. Thomas 1964-4-5 10298 Santa Clara Stanford University Campus, Biology Department Experimental Garden Comment
  CAS-BOT-BC171251  Alnus John H. Thomas; Hazelle A. Thomas 1956-7-21 6195 Placer Vicinity of Donner Pass, about 80 miles NE of Sacramento. Sierra Nevada 2377 Comment
  JROH1324  Alnus rhombifolia John H. Thomas 1964-11-29 10539 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek below dam Comment
  JROH1329  Alnus rhombifolia John Hunter Thomas 1992-5-26 25351 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek near bridge & below the dam Comment
  UCSB1006  Alnus rhombifolia Thomas, Cynthia 1959-7-23 Santa Barbara Kinevan Canyon, just off San Marcos Pass Rd. 609 Comment
  CAS-BOT-BC169358  Alnus rubra John H. Thomas 1959-8-16 8072 Santa Cruz Waddell Creek about 2 miles inlad from the coast. Rancho del Oso. 15 Comment
  CAS-BOT-BC169565  Alnus rubra John H. Thomas 1974-12-29 17668 Santa Clara Stanford University. Frenchman's Hill residence area Comment
  RSA140625  Amaranthus albus John H. Thomas 1954-9-9 4589 Santa Clara Near Old Winery, between Mausoleum and Stanford Convalescent Home, Stanford University Comment
  UC1195197  Amaranthus deflexus John H. Thomas 1960-7-11 8810 Santa Clara Stanford University Campus, at Engineering corner Stanford University Campus Comment
  VVC2325  Amaranthus fimbriatus Tim Thomas 2011-10-17 5516 Riverside Sonoran Desert, Ford Dry Lake off ramp just N of I 10 in drainge channel at edge of Lake. 108 Comment
  RSA177068  Amaranthus powellii John H. Thomas 1964-9-3 10473 Santa Clara 838 Cedro Way, Stanford. Comment
  CAS-BOT-BC42865  Ambrosia acanthicarpa J. H. Thomas 1959-9-19 8167 Mono Lee Vining Comment
  CAS-BOT-BC22354  Ambrosia dumosa J. H. Thomas 1957-4-6 6642 San Bernardino Mojave Desert. 1.4 miles north of Yucca Valley on raod to Lucerne Valley. 914 Comment
  CAS-BOT-BC273059  Ambrosia salsola John H. Thomas 1957-4-6 6635 A San Bernardino Mojave Desert. 1.4 miles north of Yucca Valley on road to Lucerne Valley. About 19 miles west of town of Twentynine Palms 914 Comment
  LA102662  Amelanchier pallida John H. Thomas; 1950-4-23 1686 Santa Cruz 0.9 mi. S of Glecarry Rd. between hwy 9 and Southern Pacific rr tracks and the San Lorenxo River. About 2 mi. from Felton Comment
  CAS-BOT-BC136854  Amelanchier utahensis J. H. Thomas 1965-5-15 10657 Santa Clara Mt. Hamilton Range, road banks about 1 mile toward San Jose along the highway from Smith Creek Comment
  RSA0089684  Amsinckia intermedia John H. Thomas 1964-4-19 10324 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Near Searsville Lake. Comment
  UCSB68173  Amsinckia intermedia Kathryn Thomas, Kathy Rindlaub 1993-3-7 SR- 42 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Transect B 624 Comment
  JROH1347  Amsinckia menziesii John Hunter Thomas 1981-4-21 20459 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68177  Amsinckia menziesii Thomas, K.; Ferren, Wayne 1993-6-8 Santa Barbara Southern Foothills of the San Rafael Range, Sedgwick Reserve, slopes along drainage above lower gate 490 Comment
  UCSB68306  Anagallis arvensis Kathryn Thomas, Kathy Rindlaub 1993-3-7 SR- 37 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Seep on flat above creek bed, downslope, upper ranch near USFS 716 Comment
  JROH3372  Anagallis minima John H. Thomas 1968-4-19 14304 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC45182  Anaphalis margaritacea John Hunter Thomas 1967-5-2 12803 San Mateo San Bruno Mountain, about 1/4 mile up Market St from new school canyon. Comment
  YM-YOSE60113  Anaphalis margaritacea W. D. Thomas 1935-10-20 552 Mariposa 1 1/2 MILE SSE OF CRANE FLAT RANGER STATION 1859 Comment
  CAS-BOT-BC391914  Anemone grayi J. H. Thomas 1949-4-14 274 San Mateo Kings Mountain Comment
  RSA142815  Anemopsis californica John H. Thomas 1960-9-17 8919 Inyo Saline Valley 305 Comment
  UC1195183  Anemopsis californica John H. Thomas 1960-9-17 8919 Inyo Saline Valley 304 Comment
  VVC2963  Anisocoma acaulis Tim Thomas, G Rink, A Schuab 2014-3-24 6174 C San Bernardino Mojave Desert, Johnson Valley; small pass midway btw Mellville and Galway Dry Lks. 884 Comment
  VVC2580  Antennaria corymbosa Tim Thomas, P. J. MacKay 2004-7-14 3484 Inyo Southern High Sierra, Cottonwood Lakes Basin; DFG cabin pond. 3396 Comment
  VVC2138  Antennaria rosea Tim Thomas, P. J. MacKay 2012-6-8 5655 San Bernardino San Bernardino Mtns, Along FS 1N05 0.9 road miles from Coon Ck Jct. 2189 Comment
  CAS-BOT-BC84752  Antennaria rosea subsp. rosea John H. Thomas 1957-9-1 6860 Fresno Between Trail and Summit Lakes. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek. 3505 Comment
  CAS-BOT-BC102266  Anthemis cotula J. H. Thomas 1953-5-30 3257 Santa Cruz in SE part of county along Southern Pacific Railroad tracks 91 Comment
  JROH499  Anthemis cotula John H. Thomas 1974-6-27 17453 San Mateo Jasper Ridge Biological Preserve, Stanford University; near the low flow crossing below Searsville Dam Comment
  JROH510  Anthemis cotula John Hunter Thomas 1985-5-21 23668 San Mateo Jasper Ridge Biological Preserve, Stanford University; near the low-flow crossing of San Francisquito Creek Comment
  CAS-BOT-BC102300  Anthemis cotula John H. Thomas 1955-6-9 5202 Santa Clara Along Escondido Road, near Wilbur Hall, Stanford University Campus Comment
  JROH498  Anthemis cotula John H. Thomas 1963-6-23 10173 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge end of ridge Comment
  CAS-BOT-BC280653  Anthoxanthum occidentale John H. Thomas 1958-3-1 7004 Santa Cruz Big Basin. Along the East Fork of Wadell Creek 304 Comment
  CAS-BOT-BC280655  Anthoxanthum occidentale John H. Thomas 1950-4-23 1688 Santa Cruz About 0.9 miles south of Glencarry road. About 2 miles S-SW of Felton 121 Comment
  SEINET7614637 Image available Anthoxanthum occidentale John H. Thomas 1961-1 9351 Santa Cruz Rancho del Oso. Redwoods along Waddell Creek, about 2-3 mi. inland. Comment
  JROH193  Anthriscus caucalis John H. Thomas 1966-4-22 11571 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH203  Anthriscus caucalis John Hunter Thomas 1989-5-5 24658 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS23943  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum J. H. Thomas 1953-7-28 3527 Santa Cruz State Highway 9; 1.2 mi n of Drinking Fountain 475 Comment
  RSA127720  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum John H. Thomas 1953-7-28 3527 Santa Cruz Along State Highway #9, 1.2 miles north of 'Drinking Fountain', as measured along the highway. 476 Comment
  CAS-BOT-BC454504  Aphanes occidentalis John H. Thomas 1955-4-4 4821 Santa Clara Near Page Mill Road about 3.7 miles from Stadford University. 121 Comment
  JROH3601  Aphanes occidentalis John H. Thomas 1968-3-17 14195 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3603  Aphanes occidentalis John H. Thomas 1973-4-14 16564 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC454476  Aphanes occidentalis John H. Thomas 1974-4-11 17125 San Mateo Serpentine area to the SE of Canada Road and Edgewood Road. NW of Woodside. 152 Comment
  CAS-BOT-BC218478  Apiaceae John H. Thomas 1963-5-4 10055 Santa Clara One mile due west of summit of Mount Hamilton Observatory, about 12.5 miles east of center of San Jose, Mount Hamilton Range 914 Comment
  CAS-BOT-BC218506  Apiaceae John H. Thomas 1967-4-10 12614 Fresno Jacalitos Hills, eastern margin of the Inner Coast Range, between Warthan and Jacalitos Creeks, about 2-5 miles southward from Coalinga 304 Comment
  VVC1732  Arabis perennans Tim Thomas, PJ MacKay 2008-5-26 4498 B San Bernardino North slope San Bernardino Mtns, Lower Marble Canyon - proposed Mitsubishi expanison. 1784 Comment
  RSA126367  Aralia californica John H. Thomas 1953-10-3 3598 Santa Cruz Along Big Basin- Boulder Creek Highway, about 2 miles NW of town of Boulder Creek 244 Comment
  RSA131152  Arbutus menziesii John H. Thomas 1959-12-31 8527 Santa Cruz About 2 miles north of Boulder Creek near Highway 9. 198 Comment
  RSA165904  Arceuthobium campylopodum John H. Thomas 1963-9-10 10262 Tuolumne About 2.8 miles NE of Longbarn as measured along Hwy 108. 1616 Comment
  CAS-BOT-BC24165  Arctostaphylos John H. Thomas 1966-3-19 11501 Del Norte About 1 mile NE of Gasquet. Comment
  CAS-BOT-BC25302  Arctostaphylos andersonii John H. Thomas 1953-2-1 2742 Santa Cruz Mt. Madonna Rd. near Manzanitos school along crest of Santa Cruz Mountains. 609 Comment
  RSA119237  Arctostaphylos andersonii John H. Thomas 1953-2-1 2742 Santa Cruz Mt. Madonna Road near Manzanita School along crest of Santa Cruz Mountains. 610 Comment
  UC1190022  Arctostaphylos andersonii John H. Thomas 1950-12-16 2515 Santa Cruz near Ben Lomond CYA Camp; Ben Lomond Mountain Comment
  CAS-BOT-BC23932  Arctostaphylos canescens subsp. canescens John H. Thomas 1953-6-14 3367 Santa Cruz Bracken Brae, about 1.5 miles NW of Boulder Creek near Boulder Creek - Big Basin Highway. 365 Comment
  CAS-BOT-BC23464  Arctostaphylos crustacea John H. Thomas 1953-2-1 2728 Santa Cruz About 1 mile NW of Larkin Valley along State Highway #1, between Santa Cruz and Watsonville. 60 Comment
  CAS-BOT-BC25192  Arctostaphylos crustacea John H. Thomas 1953-3-8 2859 Santa Cruz Vicinity of Loma Prieta Rd. and road leading to Loma Prieta Lookout. 944 Comment
  CAS-BOT-BC25196  Arctostaphylos crustacea John H. Thomas 1949-10-9 1127 Santa Cruz Near Highway 9 about 1 mile N of drinking fountain toward Saratoga Summit. 457 Comment
  CAS-BOT-BC25223  Arctostaphylos crustacea John H. Thomas 1953-2-1 2727 Santa Cruz About 1 mile NW of Larkin Valley slong State Highway #1, between Santa Ctuz and Watsonville. 60 Comment
  JROH1926  Arctostaphylos crustacea subsp. crustacea John H. Thomas 1974-6-30 17463 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1933  Arctostaphylos crustacea subsp. crustacea John H. Thomas 1974-4-25 17208 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville end of ridge Comment
  JROH1935  Arctostaphylos crustacea subsp. crustacea John H. Thomas 1975-1-18 17675 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville end of ridge Comment
  CAS-BOT-BC23293  Arctostaphylos glandulosa subsp. glandulosa John H. Thomas 1953-7-25 3509 Santa Cruz About 1.5 miles north of Chalks Lookout in NW portion of Santa Cruz County between Henry and Whitehouse Creeks. 365 Comment
  CAS-BOT-BC39153  Arctostaphylos glauca J. H. Thomas 1953-2-1 2746 Santa Clara Slope of Loma Prieta Ridge 457 Comment
  CAS-BOT-BC24555  Arctostaphylos glutinosa J. H. Thomas 1954-5-7 4077 Santa Cruz On top of ridge between Scott and Mill Creek drainages, about 1.7 mi. s.-sw. of Eagle Rock. 609 Comment
  CAS-BOT-BC24560  Arctostaphylos glutinosa J. H. Thomas 1954-5-7 4077 Santa Cruz On top of ridge between Scott and Mill Creek drainages, about 1.7 mi. s.-sw. of Eagle Rock. 609 Comment
  CAS-BOT-BC24518  Arctostaphylos hooveri H. A. Thomas; J. H. Thomas 1955-7-16 5241 Monterey Vicinity of Nacimiento Summit. 914 Comment
  CAS-BOT-BC38660  Arctostaphylos manzanita subsp. manzanita John H. Thomas 1981-4-20 20333 Sutter Sutter Buttes .5 - .75 miles eastward of Dean Place. 182 Comment
  RSA187470  Arctostaphylos nummularia John H. Thomas 1966-3-21 11512 Mendocino About 2-3 miles east of Noyo along Hwy 20. 91 Comment
  CAS-BOT-BC46178  Arctostaphylos silvicola John H. Thomas 1953-2-14 2776 Santa Cruz Ben Lomond Sand Hills near Quail Hollow Rd. 167 Comment
  GH362137  Arctostaphylos silvicola J. H. Thomas 1966-5-31 11651 Unknown About 2 miles from Felton toward Santa Cruz along Graham Hill Road. Lat. N. 37 02.5, Long. 112 03 W. Ben Lomond Sand Hills Comment
  RSA119215  Arctostaphylos silvicola John H. Thomas 1953-2-23 2803 Santa Cruz About 2 1/2 miles SE of Felton between Graham Hill Road and Mt. Hermon Road. 213 Comment
  RSA119228  Arctostaphylos tomentosa subsp. crustacea John H. Thomas 1953-3-8 2859 Santa Cruz Vicinity of Loma Prieta Road and road leading to Loma Prieta Lookout. 945 Comment
  RSA119233  Arctostaphylos tomentosa subsp. crustacea John H. Thomas 1951-2-4 2544 Santa Cruz Foot of Blooms Grade. Opposite Hilton Airport. 244 Comment
  RSA181254  Arctostaphylos tomentosa subsp. crustacea John H. Thomas 1961-12-31 9832 Santa Clara Along road just below slope of Loma Prieta. 1098 Comment
  CAS-BOT-BC47264  Arctostaphylos tomentosa subsp. hebeclada J. H. Thomas 1954-4-30 4014 Monterey Hill Creek Drainage, w. side. About 2.3 mi. sw. of Eagle Rock. 518 Comment
  VVC1738  Arenaria macradenia var. macradenia Tim Thomas, PJ MacKay 2008-5-26 4492 San Bernardino North slope San Bernardino Mtns, Lower Marble Canyon - proposed Mitsubishi expanison. 1784 Comment
  CAS-BOT-BC401603  Argemone corymbosa subsp. corymbosa J. H. Thomas 1949-4-23 455 Riverside 9 miles north of Desert Center, near Boulder Well, on highway between Desert Center and Rice Comment
  UCR240512  Aristida adscensionis Tim Thomas, Alice Karl 2012-9-7 5886 San Bernardino Mojave Desert, Valley Mountain 8.5 mi northeast of Twentynine Palms. Top of east complex on northwest end 643 Comment
  VVC2171  Arnica chamissonis Tim Thomas, PJ MacKay, D Clendenen 2009-7-4 4799 San Bernardino San Bernardino Mtns, Bluff Lake 2317 Comment
  CAS-BOT-BC82365  Arnica cordifolia J. H. Thomas 1954-5-13 4130 Siskiyou Salmon Mountains, Klamath National Forest. Near South Fork of Salmon River, 5 to 9 miles southeast of Cecilville, 1066 Comment
  CAS-BOT-BC84988  Artemisia biennis J. H. Thomas 1959-8-27 8103 Santa Clara Near Highway No. 101 and Metcalf Road. About 1.5 miles northwest of Coyote. Santa Clara Valley. 76 Comment
  CAS-BOT-BC90230  Artemisia californica J. H. Thomas 1950-9-23 2368 Santa Cruz About 1.1 miles NW of Big Basin turnoff along California State Highway #9 Comment
  RSA177002  Artemisia californica John H. Thomas 1964-11-29 10538 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of palo Alto. E end of Searsville Dam Comment
  CAS-BOT-BC90550  Artemisia dracunculus J. H. Thomas 1949-10-30 1208 Monterey Santa Lucia Mountains, Los Padres National Forest. Vicinity of China Camp, between Jamesburg and Tassajara [Hotsprings] 1524 Comment
  CAS-BOT-BC90864  Artemisia pycnocephala John H. Thomas 1969-9-21 15473 Sonoma near mouth of Russian River Comment
  VVC3095  Artemisia rothrockii Tim Thomas, PJ MacKay 2007-8-13 4209 Inyo Southern High Sierra, Cottonwood Lakes Basin Watershed. 0.6 mi up South Fork from main tr. 3114 Comment
  UC1119431  Artemisia spiciformis W. D. Thomas 1935-9-12 470 Mariposa 1/2 mi w Ireland Lake; Yosemite National Park, Mt. Lyell Quadrangle 3169 Comment
  CAS-BOT-BC400576  Asarum caudatum J. H. Thomas 1965-4-20 10574 Santa Cruz Along Fall Creek 1-1 1/2 miles west of Felton 91 Comment
  UCSB68120  Asclepias Kathryn Thomas, Wayne Ferren, Ivana Noel 1993-6-8 SR- 289 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Upper Figueroa Creek 365 Comment
  JROH4578  Asparagus officinalis subsp. officinalis John Hunter Thomas 1991-11-21 25100 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near low-flow crossing of San Francisquito Creek Comment
  CAS-BOT-BC65932  Aspidotis densa John H. Thomas 1966-3-19 11494 Del Norte Near highway 119 between Crescent City and Gasquet about 4-5 miles west of Gasquet near Myrtle Creek Comment
  CAS-BOT-BC99247  Aster John H. Thomas 1961-9-15 9788 Tuolumne Between Sonora Pass and the Dardanelles along Highway 108 2590 Comment
  VVC2174  Aster ascendens Tim Thomas, PJ MacKay, D Clendenen 2009-7-4 4802 San Bernardino San Bernardino Mtns, Bluff Lake 2317 Comment
  RSA126378  Aster chilensis John H. Thomas 1959-11-26 8515 Santa Clara Page Mill Road, about 4 miles southward from Palo Alto near Frenchman's Tower Comment
  VVC1987  Aster occidentalis Tim Thomas, Pam MacKay, Dave Clendenen 2008-8-30 4567 San Bernardino San Bernardino Mtns., Bluff Lake. 2311 Comment
  CAS-BOT-BC477879  Asteraceae John H. Thomas 1977-4-24 18541 San Benito Pinnacles National Monument. Near Scout Peak, along trail to Bear Gulch Reservoir 762 Comment
  CAS-BOT-BC478072  Asteraceae John H. Thomas 1970-4-15 15547 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River Comment
  VVC1739  Astragalus albens Tim Thomas, PJ MacKay 2008-5-26 4488 San Bernardino San Bernardino Mtns., Specialty Minerals quarry - near shade house 1341 Comment
  YM-YOSE59724  Astragalus bolanderi W. D. Thomas 1935-10-5 550 Mariposa PORCUPINE FLAT 1859 Comment
  VVC2845  Astragalus didymocarpus var. dispermus Tim Thomas 2014-4-13 6262 Kern Mojave Desert, 5 miles south of Cantil. 652 Comment
  CAS-BOT-BC186783  Astragalus gambelianus John H. Thomas 1973-4-28 16706 Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose 914 Comment
  CAS-BOT-BC186785  Astragalus gambelianus John H. Thomas 1965-5-15 10654 Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose 914 Comment
  CAS-BOT-BC186811  Astragalus gambelianus John H. Thomas 1961-4-2 9048 Santa Clara Stanford University. Hills to the south of Junipero Serra Blvd. Comment
  CAS-BOT-BC186828  Astragalus gambelianus John H. Thomas 1981-4-20 20430 Sutter Sutter Buttes. Huff Canyon - North Butte area 304 Comment
  JROH1996  Astragalus gambelianus John Hunter Thomas 1984-4-2 23273 3 C San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge fence Comment
  JROH1988  Astragalus gambelianus John H. Thomas 1961-4-4 9044 E San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge end of ridge Comment
  VVC2470  Astragalus insularis var. harwoodii Tim Thomas 2013-3-18 5930 Riverside Sonoran Desert, 12 miles WSW of Blythe; south of I-10. vic of powerline corridor. 145 Comment
  VVC2860  Astragalus leucolobus Tim Thomas 2014-4-30 6273 San Bernardino San Bernardino Mtns., East of Mitsubishi Mine 0.5 mi east of Hwy 18 on FS 3N36. 1488 Comment
Read comments
Nov 8 2018
  CAS-BOT-BC192772  Astragalus palmeri J. H. Thomas 1949-4-20 345 San Diego Sentenac Canyon, about 7 miles east of Banner Comment
  CAS-BOT-BC193094  Astragalus pycnostachyus var. pycnostachyus J. H. Thomas 1958-8-1 7372 San Mateo Just north of mouth of San Gregorio Creek 30 Comment
  UC569442  Athyrium distentifolium var. americanum W. D. Thomas 1935-9-15 496 Mariposa Emeric Lake; Mt. Lyell Quadrangle 2895 Comment
  CAS-BOT-BC17496  Athysanus pusillus John H. Thomas 1966-3-21 11523 a Lake About 4 miles south of Lower Lake as measured along highway 29. 426 Comment
  CAS-BOT-BC17555  Athysanus pusillus John H. Thomas 1978-4-23 19120 San Benito Pinnacles National Monument. High Peaks, Condor Gulch, Bear Gulch trail loop. 762 Comment
  CAS-BOT-BC17612  Athysanus pusillus John H. Thomas 1967-3-31 12455 Tulare Just north of Tulare-Kern County line along Fairview-Kernville road, abour 4-5 miles north of Kernville. Comment
  RSA137304  Atriplex californica John H. Thomas 1950-6-10 1962 Monterey Sand dunes along the coast just south of Moss Landing. Comment
  RSA181337  Atriplex semibaccata John H. Thomas 1965-12-19 11462 Santa Clara Vicinity of yacht harbor, Palo Alto. Comment
  RSA187397  Atriplex subspicata John H. Thomas 1950-9-24 2406 Santa Cruz Between Watsonville Slough and Pacific Ocean near mouth of Pajaro River and Palm Springs Speedway. Comment
  CAS-BOT-BC146143  Avena barbata John H. Thomas 1954-5-26 4222 Santa Cruz Northern end of Hilton Airport, between airstrip and Highway. 243 Comment
  CAS-BOT-BC146145  Avena barbata J. H. Thomas 1950-4-15 1544 a Santa Cruz Along Pajaro River, just inside of county line in southeast corner of county. 30 Comment
  CAS-BOT-BC145724  Avena fatua J. H. Thomas 1954-4-10 3894 Santa Cruz Northern end of Hilton Airport between highway and airstrip. 243 Comment
  CAS-BOT-BC145981  Avena fatua Hazelle A. Thomas; John H. Thomas 1955-5-14 5054 Santa Clara Mount Hamilton Range. One mile due west of Mount Hamilton summit. About 12.5 miles est of the center of San Jose. 914 Comment
  CAS-BOT-BC145982  Avena fatua J. H. Thomas 1955-4-27 4923 Santa Clara Stanford Unversity Campus. Between Weeping Angel and Palm Drive. Comment
  CAS-BOT-BC98630  Baccharis douglasii J. H. Thomas 1960-9-11 8894 Santa Clara Stanford University Campus - oval in front of Quad. Comment
  CAS-BOT-BC98645  Baccharis douglasii J. H. Thomas 1954-8-12 4569 Santa Cruz Near railroad tracks at Rincon, about 4 miles north of Santa Cruz 60 Comment
  GH3853  Baccharis emoryi C. H. Thomas Unknown Fort Yuma Comment
  JROH532  Baccharis glutinosa John H. Thomas 1964-10-2 10513 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam along stream Comment
  JROH537  Baccharis glutinosa John Hunter Thomas 1979-9-9 19731 San Mateo Jasper Ridge Biological Preserve, Stanford University; edge of Searsville Lake Comment
  JROH538  Baccharis glutinosa John Hunter Thomas 1979-9-9 19731 San Mateo Jasper Ridge Biological Preserve, Stanford University; edge of Searsville Lake Comment
  JROH539  Baccharis glutinosa John Hunter Thomas 1981-9-24 20751 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC99462  Baccharis pilularis John H. Thomas 1955-4-6 4880 San Francisco North peak, Twin Peaks 274 Comment
  CAS-BOT-BC16630  Barbarea orthoceras John H. Thomas 1965-4-29 10617 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC16665  Barbarea orthoceras J. H. Thomas 1953-3-8 2860 Santa Cruz Near Forest Service Ranger Statoin at Burrell. Comment
  RSA195575  Barbarea orthoceras John H. Thomas 1956-5-2 5697 Santa Clara Monte Bello Ridge, about 5 miles south of Los Altos. Vineyard and an abandoned road bordered by chaparral and broad-leaved evergreen forest. 793 Comment
  RSA176868  Bassia hyssopifolia John H. Thomas 1964-9-8 10475 Mono Shore of mono lake near marina on the west side of the lake near Hwy 395 1982 Comment
  JROH3913  Bellardia trixago John H. Thomas 1969-5-16 15047 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3915  Bellardia trixago John H. Thomas 1974-5-19 17382 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  RSA152071  Bellardia trixago John H. Thomas 1961-5-5 9223 San Mateo Along Sandhill road about 3.5 miles westward from Stanford Univ. 91 Comment
  RSA262232  Bellardia trixago John H. Thomas 1973-4-27 16695 Santa Clara West of Junipero Serra near Stanford Ave. Stanford Univ. Campus. 30 Comment
  RSA126310  Bellis perennis John H. Thomas 1953-10-17 3611 Santa Cruz Pasatiempo Golf Course between Scott Valley and Santa Cruz. Comment
  CAS-BOT-BC100194  Bellis perennis John H. Thomas 1974-5-7 17326 San Mateo San Bruno Mountain. Along Guadalupe Parkway opposite school Comment
  CAS-BOT-BC100198  Bellis perennis J. H. Thomas 1949-5-14 523 Santa Clara Nat. Hist. Mus., Stanford Univ. Campus Comment
  CAS-BOT-BC106356  Bellis perennis John H. Thomas 1966-3-19 11489 Humboldt Near the M.G. Goethe Grove in Prairie Creek Redwoods State Park near highway 101. Between Eureka and Crescent City. Comment
  RSA187521  Bellis perennis John H. Thomas 1966-3-19 11489 Humboldt Near the M. G. Goethe Grove in Prairie Creek Redwoods State Park near Highway 101, between Eureka and Crescent city. Comment
  CAS-BOT-BC75856  Berberis pinnata John H. Thomas 1955-4-6 4881 San Francisco San Francisco. North Peak, Twin Peaks. 274 Comment
  RSA136186  Beta vulgaris John H. Thomas 1950-4-16 1579 Santa Cruz Near mouth of Pajaro River between Watsonville Slough and Pacific Ocean, near Palm Beach Speedway. Comment
  RSA140621  Beta vulgaris John H. Thomas 1960-6-25 8796 San Mateo Redwood City. Along or near a small creek running into Redwood Slough between El Camino Real and railroad tracks, near Maple Street. alt. below 25 feet. 8 Comment
  JEPS21653  Bidens pilosa J. H. Thomas 1957-11-13 6971 Los Angeles near Colorado St. and Lake Ave. (Pasadena); Pasadena Comment
  CHSC475  Boechera californica E. Thomas 1940-4-6 Los Angeles Claremont. Comment
  RSA0013293  Boechera retrofracta Tim Thomas 2010-7-7 5230 Inyo Southern High Sierra: Cottonwood Lakes Basin; E base Mesa. 3152 Comment
  CAS-BOT-BC25949  Boechera tularensis H. A. Thomas; J. H. Thomas 1955-9-9 5418 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. 3048 Comment
  CAS-BOT-BC478484  Boisduvalia John H. Thomas 1956-6-24 6025 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip. 243 Comment
  CAS-BOT-BC31077  Bolboschoenus maritimus John H. Thomas 1966-5-13 11611 Santa Clara Along ditch near Stanford Avenue and El Camino. Palo Alto. Comment
  JROH4855  Brachypodium distachyon John Hunter Thomas 1988-6-2 24509 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4861  Brachypodium distachyon John Hunter Thomas 1990-5-17 24859 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC36794  Brassica rapa John H. Thomas 1965-4-29 10605 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC36812  Brassica rapa John Hunter Thomas 1955-4-2 4747 Santa Clara Near intersection of Middlefield and Charleston Roads, Palo Alto. 7 Comment
  CAS-BOT-BC36821  Brassica rapa John H. Thomas 1950-3-5 1285 Santa Cruz Between Corralitos and Pinto Lake, along East Corralitos Road. About 5 miles north of Watsonville. Comment
  CAS-BOT-BC36811  Brassica rapa J. H. Thomas 1955-3-17 4676 Santa Clara Stanford University near Museum. Comment
  VVC3089  Brickellia californica Tim Thomas, P. J. MacKay 2015-10-27 6920 San Bernardino San Gabriel Mtns, Along Hwy 2 at west end of Blue Ridge. 2238 Comment
  CAS-BOT-BC145486  Briza maxima J. H. Thomas 1953-5-23 3207 Santa Cruz About 1 mile south of summit of Santa Cruz - Los Gatos Highway, State Highway #17. 518 Comment
  JROH4872  Briza maxima John Hunter Thomas 1988-6-1 24492 San Mateo Jasper Ridge Biological Preserve, Stanford University. Grassy area below dam. Comment
  UCD57274  Briza maxima J. H. Thomas 1953-5-23 3207 Santa Cruz About 1 mile south of summit of Santa Cruz-Los Gatos Highway. State Highway 17. 518 Comment
  CAS-BOT-BC145395  Briza minor Hazelle A. Thomas; John H. Thomas 1955-6-25 629 Mendocino Along Fort Bragg-Willitts Road. Near Old Camp 19, between Whiskey Springs Fire Camp and Dunlap, 11.5 miles inland from the coast. 91 Comment
  JROH4882  Briza minor John H. Thomas 1968-4-19 14298 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD57383  Briza minor J. H. Thomas 1954-5-7 4109 Santa Cruz Northern end of Hilton Airport. Between airstrip and highway. 243 Comment
  CAS-BOT-BC145320  Briza minor J. H. Thomas 1957-12-28 6973 Santa Clara Stanford University Campus. Growing near Wilbur Hall. Comment
  CAS-BOT-BC486446  Brodiaea terrestris subsp. terrestris J. H. Thomas 1954-4-30 4053 Santa Cruz Northern end of Hilton Airport between airstrip and highway 243 Comment
  JROH4588  Brodiaea terrestris subsp. terrestris John H. Thomas 1956-4-7 5624 San Mateo Jasper Ridge Biological Preserve, Stanford University. Open serpentine area on top of ridge and adjacent slopes Comment
  CAS-BOT-BC483168  Brodiaea terrestris subsp. terrestris John H. Thomas 1971-5-2 15808 San Mateo Near intersection of Canada and Edgewater Roads, about 4 miles SW of center of Redwood City 304 Comment
  CAS-BOT-BC144118  Bromus John H. Thomas 1975-4-27 17807 San Benito Pinnacles National Monument. Pinnacels Loop Trail. 762 Comment
  RSA195508  Bromus carinatus John H. Thomas 1966-4-13 11558 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Comment
  CAS-BOT-BC149088  Bromus carinatus var. carinatus John H. Thomas 1976-6-16 18343 Sonoma Southern part of Sea Ranch, northwestern part of county, about 7 miles south of Gualala. 30 Comment
  JROH4892  Bromus carinatus var. carinatus John Hunter Thomas 1966-4-13 11558 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC148415  Bromus carinatus var. marginatus John H. Thomas 1961-7-19 9610 Tuolumne Yosemite National Park. Vicinity of Camp White Wolf. 2438 Comment
  CAS-BOT-BC156159  Bromus catharticus J. H. Thomas 1961-3-22 8978 Santa Clara San Jose. Near intersection of 3rd Street and East San Fernando. Comment
  JROH4907  Bromus catharticus var. catharticus John Thomas 1989-5-9 24726 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Causeway Bridge between the two parts of the Lake Comment
  CAS-BOT-BC155683  Bromus diandrus J. H. Thomas 1953-5-2 3099 A Santa Cruz Sunset Beach State Park. 6 Comment
  CAS-BOT-BC155685  Bromus diandrus John H. Thomas 1950-5-6 1786 Santa Cruz Old Vineyard on north side of Boulder Creek Canyon, about 1 mile up Boulder Creek Highway from Boulder Creek. 198 Comment
  RSA187532  Bromus diandrus John H. Thomas 1950-5-6 1786 Santa Cruz Old vineyard on north side of Boulder creek Canyon, about 1 mile up Boulder Creek Highway from Boulder Creek. 198 Comment
  CAS-BOT-BC155095  Bromus hordeaceus John H. Thomas 1973-4-23 16662 San Benito Pinnacles National Monument. Foot trail and upper part of Chalone Creek Trail. 762 Comment
  CAS-BOT-BC155164  Bromus hordeaceus John H. Thomas 1961-3-22 9020 Santa Clara At Edenvale, about 5 miles southeast of San Jose. 91 Comment
  CAS-BOT-BC155168  Bromus hordeaceus John H. Thomas 1960-5-10 8665 Santa Clara Mount Hamilton Range. One mile due west of summit of Mount Hamilton, about 12.5 miles east of center of San Jose. 914 Comment
  CAS-BOT-BC155184  Bromus hordeaceus J. H. Thomas 1954-4-30 4062 Santa Cruz Northern end of Hilton Airport, between airstrip and highway. 243 Comment
  CAS-BOT-BC155188  Bromus hordeaceus J. H. Thomas 1954-5-26 4223 B Santa Cruz Northern end of Hilton Airport, between airstrip and highway. 243 Comment
  CAS-BOT-BC155224  Bromus hordeaceus J. H. Thomas 1953-5-23 3203 Santa Cruz Saint Mary of the Palms, summer girl's camp near Glenwood. 304 Comment
  JROH4923  Bromus hordeaceus John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1190046  Bromus hordeaceus John H. Thomas 1950-4-16 1575 Santa Cruz Watson Slough, at bridge to Palm Beach Watson Slough Comment
  CAS-BOT-BC155259  Bromus hordeaceus John H. Thomas 1961-5-21 9421 Tuolumne Below Longbarn, about 15 miles northeast of Sonora near Highway 108. 1524 Comment
  VVC1665  Bromus inermis Tim Thomas, PJ MacKay 2003-7-4 2962 San Bernardino San Bernardino Mtns, Fish Creek Meadow. 2409 Comment
  JROH4936  Bromus laevipes John Hunter Thomas 1989-6-13 24769 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA594922  Bromus pseudolaevipes John H. Thomas 1961-5-23 9450 Santa Clara along Page Mill Road, about 4 miles from Los Altos. 610 Comment
  CAS-BOT-BC161747  Bromus rubens John H. Thomas 1965-4-29 10626 San Mateo San Bruno Mountains in northern part of county. 396 Comment
  CAS-BOT-BC161568  Bromus suksdorfii H. A. Thomas; J. H. Thomas 1955-9-13 5482 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Between lowest and 2nd group of lakes in 4th Recess. 3291 Comment
  UC1190013  Bromus tectorum John H. Thomas 1959-3-25 7614 Kern Randsburg 1066 Comment
  CAS-BOT-BC233706  Buddleja davidii J. H. Thomas 1958-6-26 7288 San Mateo 3 miles north of Woodside along Canada Road 152 Comment
  CAS-BOT-BC36949  Cakile maritima var. maritima John H. Thomas 1963-5-20 10116 San Mateo Ano Nuevo Island about one half mile off shore and about 20 mile northwest of Santa Cruz. Comment
  RSA133319  Cakile maritima var. maritima John H. Thomas 1958-6-26 7259 San Francisco Vacant lot at intersection of Davidson Ave. and 3rd St. 0 Comment
  UC1142974  Calamagrostis canadensis W. D. Thomas 1935-9-15 495 Mariposa near Emeric Lake; Yosemite National Park, Mount Lyell 2895 Comment
  CAS-BOT-BC185300  Calamagrostis muiriana John H. Thomas 1961-9-9 9747 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo, and Fresno counties. 3718 Comment
  CAS-BOT-BC185434  Calamagrostis muiriana H. A. Thomas; J. H. Thomas 1954-9-13 4630 Fresno Sierra Nevada. Vicinty of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek. 3657 Comment
  VVC3178  Calamagrostis muiriana Tim Thomas 2013-7-10 6124 Inyo Southern High Sierra, Cottonwood Lakes Basin, above High Lake 3534 Comment
  CAS-BOT-BC233937  Calandrinia breweri J. H. Thomas 1965-4-26 10586 Santa Clara Palo Alto Regional Park off Page Mill Road, along Nature Trail. Comment
  CAS-BOT-BC438610  Calandrinia ciliata John H. Thomas 1976-6-15 18281 Sonoma Southern end of the Sea Ranch, northwestern part of county, about 7 miles south of Gualala. 30 Comment
  CAS-BOT-BC438539  Calandrinia ciliata John H. Thomas 1974-4-11 17128 San Mateo To the SE of Canada Road and Edgewood Road. NW of Woodside. 152 Comment
  CAS-BOT-BC438560  Calandrinia ciliata John H. Thomas 1949-4-7 242 Santa Clara Stanford University Campus, near Natural History Museum (Museum Building). Comment
  JROH1636  Callitriche marginata John H. Thomas 1970-4-4 15544 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA127086  Callitriche marginata John H. Thomas 1959-4-4 7646 Santa Cruz Northern end of Hilton Airport, about 3 miles NW of Boulder Creek. 244 Comment
  VVC2628  Callitriche verna Tim Thomas, J. Mac 2006-7-12 3925 Inyo Southern High Sierra, Cottonwood Lakes Basin; Lower ridge of east Wooly Back. 3341 Comment
  VVC2629  Callitriche verna Tim Thomas, PJ MacKay 2004-7-8 3448 Inyo Southern High Sierra, Cottonwood Lakes Basin; eastern ridge of Woolyback, in castleated landscape. 3585 Comment
  CAS-BOT-BC85733  Calocedrus decurrens H. A. Thomas; J. H. Thomas 1954-7-27 4558 Siskiyou Salmon - Trinity Mts. about 6 miles SE of Cecilville. Between Mt. Veiw Cabin and S. Fork of Salmon River. 944 Comment
  JROH4596  Calochortus albus John H. Thomas 1963-5-12 10085 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4602  Calochortus albus John H. Thomas 1973-5-5 16760 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC483224  Calochortus albus J. H. Thomas 1949-5-21 551 Santa Clara About 2 miles up Page Mill Road from mill, Stanford Comment
  JROH4628  Calochortus argillosus John Hunter Thomas 1980-6-5 19994 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC490166  Calochortus leichtlinii Hazelle A. Thomas; John 1956-7-21 6093 Placer Siera Nevada. Vicinity of Donner Pass, about 80 miles northeast of Sacramento 2377 Comment
  JROH4633  Calochortus luteus John H. Thomas 1973-6-10 16817 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4635  Calochortus luteus John H. Thomas 1975-6-5 17941 San Mateo Jasper Ridge Biological Preserve, Stanford University; near shack on serpentine and non-serpentine soils Comment
  CAS-BOT-BC491988  Calochortus luteus J. H. Thomas 1960-6-1 8770 San Mateo Dry road bank between Stanford and Searsville along Sand Hill Road. Comment
  RSA140632  Calochortus luteus John H. Thomas 1960-6-1 8770 San Mateo Between Stanford and Searsville along Sand Hill Road Comment
  CAS-BOT-BC494020  Calochortus tolmiei J. H. Thomas 1954-5-12 4121 Siskiyou Salmon Mountains, klamath National Forest. Near south Fork of Salmon River, 5 to 9 miles southeast of Cecilville 975 Comment
  JROH574  Calycadenia multiglandulosa John Hunter Thomas 1987-6-7 24335 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC215795  Calystegia macrostegia subsp. intermedia John H. Thomas 1957-4-27 6713 Los Angeles Coast hills, west side of mouth of Latigo Canyon, about 3 miles northwest of Pt. Dume, 15 miles due west of Santa Monica, Santa Monica Mountains 152 Comment
  UCSB68207  Calystegia macrostegia subsp. intermedia Thomas, Kathryn; Ferren, Wayne 1993-4-20 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve; on ridge over east vernal pool valley 490 Comment
  RSA166303  Calystegia purpurata John H. Thomas 1954-4-23 3983 Santa Cruz Vicinity of Burrell. 640 Comment
  JROH1840  Calystegia purpurata subsp. purpurata John H. Thomas 1969-6-4 15112 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1844  Calystegia subacaulis subsp. subacaulis John H. Thomas 1957-4-16 6652 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2552  Camissonia boothii subsp. boothii Tim Thomas, PJ MacKay 2007-8-14 4240 Inyo Eastern Sierra, Horseshoe Mdw Rd. 2220 Comment
  RSA176720  Camissonia claviformis subsp. lancifolia John H. Thomas 1961-9-14 9774 Mono 3.5 miles up Rock Creek from Tom s Place 2439 Comment
  RSA165922  Camissonia hirtella John H. Thomas 1950-5-6 1780 Santa Cruz Old vineyard on opposite side of Boulder Creek from Hesse Brook, about 1 mile up Boulder Creek from town of Boulder Creek. Comment
  UCR73651  Camissonia hirtella Alan Thomas 1985-4-19 7 San Diego Mission Gorge, c. 2.6 km SW of Old Mission Dam 200 Comment
  CAS-BOT-BC160329  Camissoniopsis cheiranthifolia subsp. cheiranthifolia John H. Thomas 1963-5-20 10108 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  CAS-BOT-BC160354  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. H. Thomas 1953-2-8 2773 Santa Cruz Coastal sand dunes just south of mouth of Waddell Creek in northwestern part of Santa Cruz County Comment
  JROH2995  Camissoniopsis micrantha John H. Thomas 1972-4-9 16065 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC37176  Capsella bursa-pastoris J. H. Thomas 1949-3-17 72 Santa Clara Stanford University Campus. Near Lake Lagunita. Comment
  JROH1476  Capsella bursa-pastoris John Hunter Thomas 1983-4-5 21324 San Mateo Jasper Ridge Biological Preserve, Stanford University; low-flow crossing Comment
  JROH1478  Capsella bursa-pastoris John Hunter Thomas 1987-4-4 24168 San Mateo Jasper Ridge Biological Preserve, Stanford University; below Searsville Dam Comment
  RSA187412  Capsella bursa-pastoris John H. Thomas 1965-4-29 10601 San Mateo San Bruno Mountain in northern part of county. 305 Comment
  CAS-BOT-BC37178  Capsella bursa-pastoris J. H. Thomas 1959-3-9 7524 Santa Clara Knoche Field near Civic Center, San Jose, bounded by Guadalupe Creek, Rosa Street, Asbury Street and San Pedro Street. Comment
  VVC2643  Cardamine breweri Tim Thomas 1980-7-27 276 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin. East ridge of Wooly Back. 3372 Comment
  CAS-BOT-BC37412  Cardamine californica John H. Thomas 1966-3-19 11495 Del Norte Near highway 119 between Crescent City and Gasquet about 4-5 miles west of Gasquet near Myrtle Creek. Comment
  CAS-BOT-BC37634  Cardamine californica John H. Thomas 1955-4-6 4855 San Francisco North peak, Twin Peaks. 274 Comment
  CAS-BOT-BC37671  Cardamine californica J. H. Thomas 1949-3-29 186 San Mateo Kings Mountain Road. Comment
  CAS-BOT-BC37731  Cardamine californica John H. Thomas 1951-1-28 2521 Santa Cruz Bear Creek Road, 5 miles from Boulder Creek. Comment
  CAS-BOT-BC37748  Cardamine californica J. H. Thomas 1954-5-13 4140 Siskiyou Salmon Mountains, Klamath National Forest. Near South Fork of Salmon River 5 to 9 miles southeast of Cecilville. 1066 Comment
  JROH1486  Cardamine californica John Hunter Thomas 1987-4-7 24176 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA132371  Cardamine californica var. integrifolia John H. Thomas 1954-1-30 3662 Santa Cruz 1.5 miles directly SW of Saratoga Summit Fire Station, near California State Hwy 9. 671 Comment
  CAS-BOT-BC37933  Cardamine oligosperma Hazelle A. Thomas; John H. Thomas 1955-6-25 628 Mendocino Along Fort Bragg-Willits Road. Near Old Camp 19, between Whiskey Springs Fire Camp and Dunlap. 91 Comment
  CAS-BOT-BC38020  Cardamine oligosperma J. H. Thomas 1954-3-5 3762 Santa Cruz Northern end of Hilton Airport between Highway and airstrip. 243 Comment
  JROH1496  Cardamine oligosperma John Hunter Thomas 1981-4-5 20261 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  JROH1498  Cardamine oligosperma John Hunter Thomas 1983-4-5 21322 San Mateo Jasper Ridge Biological Preserve, Stanford University; low-flow crossing Comment
  CAS-BOT-BC281745  Carduus pycnocephalus John H. Thomas 1958-6-26 7277 San Francisco At intersection of Davidson Ave and 3rd St near sea level Comment
  JROH581  Carduus pycnocephalus subsp. pycnocephalus John Hunter Thomas 1981-5-8 20567 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC281844  Carduus tenuiflorus John H. Thomas 1961-5-17 9398 Santa Clara At edge of Stevens Creek Reservoir, about 7 miles S of Mountain View 182 Comment
  RSA187476  Carduus tenuiflorus John H. Thomas 1950-4-29 1700 Santa Cruz Near San Mateo - Santa Cruz county line Comment
  CAS-BOT-BC18271  Carex John H. Thomas 1961-9-9 9744 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo and Fresno Counties. 3718 Comment
  CAS-BOT-BC18440  Carex John H. Thomas 1961-5-27 9456 Tuolumne Vicinty of the Darndanelles near the Sonora Pass Road between the Darndanelles Resort and Pigeon Flat. 1828 Comment
  VVC1931  Carex Tim Thomas, PJ MacKay, RT Hawke 2005-7-25 3856 San Bernardino San Bernardino Mtns., Cienaga Seca. 2509 Comment
  UC2031922  Carex abrupta Tim Thomas 1987-8-19 1172 Inyo Southern High Sierra Nevada: Cottonwood Lakes Basin Watershed. Golden Trout Camp. Comment
  RSA159424  Carex amplifolia John H. Thomas 1961-5-14 9365 San Mateo Vicinity of Pilarcitos Stone Dam on Pilarcitos Creek. San Francisco Watershed Reserve. 152 Comment
  JROH4312  Carex barbarae John H. Thomas 1974-5-3 17240 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC19561  Carex bolanderi H. A. Thomas; J. H. Thomas 1954-7-21 4416 Siskiyou Salmon - Trinity Mountains. About 6 miles SE of Cecilville. West side of Rush Creek. 1158 Comment
  CAS-BOT-BC34115  Carex breweri John H. Thomas 1957-9-3 6934 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo and Fresno Counties. 3718 Comment
  RSA122760  Carex breweri W. D. Thomas 1935-10-5 549 Mariposa Porcupine Flat. 1860 Comment
  UC1133333  Carex breweri W. D. Thomas 1935-8-20 391 Tuolumne Shepherds Crest, NW end 3566 Comment
  UC1133337  Carex congdonii W. D. Thomas 1935-8-20 378 Tuolumne 1 mi ne Upper Young Lake; Yosemite National Park, Mt. Lyell Quadrangle Comment
  JROH4330  Carex densa John H. Thomas 1967-6-1 12984 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC2031906  Carex douglasii Tim Thomas 1996-7-6 1792 Inyo Southern High Sierra Nevada: Cottonwood Lakes Basin, Golden Trout Camp vic spring box. Comment
  VVC2132  Carex douglasii Tim Thomas, P. J. MacKay 2012-6-8 5645 San Bernardino San Bernardino Mtns., Hwy 18 just between Cushenbury Grade and Cactus Flats 1768 Comment
  JROH4339  Carex globosa John Hunter Thomas 1983-4-5 21317 San Mateo Jasper Ridge Biological Preserve, Stanford University. Grassy draw along path to redwood area. Comment
  JROH4342  Carex globosa John Hunter Thomas 1990-5-8 24851 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Rattlesnake Rock. Comment
  UCR261870  Carex globosa Tim Thomas, George Ross II & III 2014-4-23 6269 San Luis Obispo South Coast Range, Irish Hills, 0.2 miles below Glenrose Spring along Coon Creek 277 Comment
  CAS-BOT-BC22195  Carex helleri John H. Thomas 1957-9-3 6936 Inyo Mono Mesa, near the junction of Mono, Inyo and Freson Counties. Sierra Nevada. 3718 Comment
  UC1133380  Carex helleri W. D. Thomas 1935-9-12 484 Tuolumne 1/2 mi s Ireland Lake; Yosemite National Park, Mt. Lyell Quadrangle Comment
  UC2031851  Carex heteroneura Tim Thomas with P. J. MacKay 2003-7-14 2980 Inyo Southern High Sierra: Cottonwood Lakes Basin: North Fork Windy Gap Stinger. Comment
  VVC1934  Carex heteroneura Tim Thomas, PJ MacKay 2003-7-4 2960 San Bernardino San Bernardino Mtns, Fish Creek Meadow. 2409 Comment
  CAS-BOT-BC28055  Carex illota John H. Thomas 1961-7-19 9632 Tuolumne Yosemite National Park. Vicinity of Camp White Wolf. 2438 Comment
  YM-YOSE59379  Carex luzulina W. D. Thomas 1935-8-20 377 Tuolumne 1 MILE N UPPER YOUNG LAKE. 3139 Comment
  UC2031896  Carex microptera Tim Thomas with P. J. MacKay 2004-7-14 3482 Inyo Southern High Sierra: Cottonwood Lakes Basin; DFG cabin pond. Comment
  UC2031900  Carex microptera Tim Thomas 2008-7-25 4540 Inyo Southern Sierra Nevada Mountains: Along Cottonwood Creek below vicinity of road crossing creek. Near the old pack station. Comment
  UC2031904  Carex microptera Tim Thomas 2008-7-25 4539 Inyo Southern Sierra Nevada Mountains: Along Cottonwood Creek below vicinity of road crossing creek. Near the old pack station. Comment
  CHSC7191  Carex multicaulis Lynn R. Thomas 1969-4-17 77 Plumas NW bank of Indian Creek, se edge of Calif. 89, near Indian Falls, 2 mi ne of intersection with Calif. 70. 944 Comment
  CHSC116242  Carex scopulorum var. bracteosa Tim Thomas; P. J. MacKay 2004-7-11 3466 Inyo Southern High Sierra: Cottonwook Lakes Basin; Golden Trout Camp spring box drainage. 3110 Comment
  UC2031846  Carex scopulorum var. bracteosa Tim Thomas with P. J. MacKay 2002-7-4 2637 Inyo Southern High Sierra: Cottonwood Lakes Basin; Jenny Lake. Comment
  UC2031855  Carex scopulorum var. bracteosa Tim Thomas 1987-8-19 1180 Inyo Southern Hight Sierra Nevada: Cottonwood Lakes Basin Watershed. Golden Trout Camp. Comment
  UC2031917  Carex scopulorum var. bracteosa Tim Thomas with P. J. MacKay 2007-8-12 4177 Inyo Southern High Sierra Nevada: Cottonwood Lakes Basin watershed. Just upstream from Horseshoe Meadows Road creek xing. Comment
  CAS-BOT-BC117484  Carex senta John H. Thomas 1959-4-11 7678 Santa Clara Along San Francisquito Creek near Junipero Serra. Ca 2 mi SW of Palo Alto 15 Comment
  UC2031894  Carex spectabilis Tim Thomas 1985-6-12 767 Inyo Southern High Sierra: Cottonwood Lakes Basin; between Golden Trout Camp and waterfall. Comment
  CAS-BOT-BC116911  Carex subbracteata var. subbracteata John H. Thomas 1961-4-14 9080 A Santa Clara Weeds in vacant lot along Junipero Serra Blvd. near Frenchman's Road, 60 Comment
  UC2031913  Carex utriculata Tim Thomas with P. J. MacKay 2012-7-13 5816 Inyo Southern High Sierra: Cottonwood Lakes Basin, south side of Muir Lake. Comment
  CAS-BOT-BC115089  Carex vesicaria John H. Thomas 1961-7-21 9639 Tuolumne Ca. 2.5 mi NW of Camp White Wolf at Harden Lake. Yosemite National Park. 2286 Comment
  CAS-BOT-BC230112  Carpobrotus chilensis John H. Thomas 1963-5-20 10142 San Mateo Ano [Ano] Nuevo Island, about 0.5 mile off shore and about 20 miles NW of Santa Cruz Comment
  CAS-BOT-BC230227  Carpobrotus edulis John H. Thomas 1976-6-15 18302 Sonoma S end of Sea Ranch, NW part of county, about 7 miles S of Gualala 30 Comment
  CAS-BOT-BC384672  Caryophyllaceae John H. Thomas 1973-4-23 16624 San Benito Pinnacles National Monument. Rim Trail from Bear Gulch Reservoir to High Peaks Trail 502 Comment
  CAS-BOT-BC249209  Castilleja affinis John H. Thomas 1961-5-17 9395 Santa Clara Monte Bello Ridge, about 5.5 miles south of center of Los Altos 487 Comment
  CAS-BOT-BC249222  Castilleja affinis John H. Thomas 1950-3-5 1272 A Santa Cruz Between Mt. Madona [Madonna] and Watsonville, about 2 miles south of Mt. Madona [Madonna]. Near intersection of Hazel Del Road and Mt. Madona [Madonna] Road 304 Comment
  CAS-BOT-BC249227  Castilleja affinis J. H. Thomas 1954-4-30 4033 Santa Cruz On top of ridge between Scott and Mill Creek drainages, about 2.2 miles S - SW of Eagle Rock 518 Comment
  RSA176603  Castilleja affinis John H. Thomas 1961-5-17 9395 Santa Clara Monte Bello Ridge, 5.5 miles S of center of Los Altos. 488 Comment
  CAS-BOT-BC249240  Castilleja affinis John H. Thomas 1981-4-20 20425 Sutter Sutter Buttes. Huff Canyon - North Butte area 304 Comment
  JROH3943  Castilleja affinis subsp. affinis John H. Thomas 1976-5-26 18156 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3945  Castilleja affinis subsp. affinis John Hunter Thomas 1978-4-20 19091 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3951  Castilleja affinis subsp. affinis John Hunter Thomas 1983-4-28 21780 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS82998  Castilleja angustifolia John Thomas 1981-6-5 Mono s of Mono Crators; Chidago Flat 2438 Comment
  CAS-BOT-BC249454  Castilleja applegatei subsp. pallida H. A. Thomas; J. H. Thomas 1955-9-13 5484 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Alt. 9,000-12,900 feet. Between lowest and 2nd group of lakes in 4th Recess. Altitude about 10000 to 10800 feet 3291 Comment
  JROH3963  Castilleja attenuata John Hunter Thomas 1978-4-28 19159 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  VVC2942  Castilleja exserta Tim Thomas, P. J. MacKay 2010-4-13 5068 San Bernardino San Bernardino Mtns., Whitewater River; Catclaw Flats 1104 Comment
  UC1032420  Castilleja linariifolia W. D. Thomas 1935-7-9 160 Alpine 1.5 mi n Mogul; Mono National Forest, Markleeville Quad. 2468 Comment
  CAS-BOT-BC243880  Castilleja mendocinensis Hazelle A. Thomas; John H. Thomas 1955-6-25 645 Mendocino Near mouth of Russian Gulch, 1.6 miles north of town of Mendocino 30 Comment
  VVC2137  Castilleja miniata subsp. miniata Tim Thomas, P. J. MacKay 2012-6-8 5653 San Bernardino San Bernardino Mtns., Vicinity of the confluence of Heart Bar Creek and Coon Creek. FS 1N37. 2149 Comment
  VVC3333  Castilleja nana Tim Thomas 1989-7-26 1335 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin Watershed. south of High Lk. 3468 Comment
  VVC3283  Castilleja praeterita Tim Thomas 1990-8-5 1410 Inyo Southern High Sierra, Cottonwood Lakes Basin; vic Golden Trout Camp near spring box 3110 Comment
  JROH4002  Castilleja rubicundula subsp. lithospermoides John Hunter Thomas 1980-5-6 19930 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC195576  Catapodium rigidum J. H. Thomas 1963-6-20 10177 A Alameda At 2802 Webster St., Berkeley Comment
  CAS-BOT-BC38199  Caulanthus anceps John H. Thomas 1959-3-19 7552 Monterey 0.4 mile south of the Monterey-San Benito County line along Lonoak Road. About 13 miles northeast of King City. 304 Comment
  CAS-BOT-BC39378  Caulanthus lasiophyllus John H. Thomas 1961-5-7 9315 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC39407  Caulanthus lasiophyllus J. H. Thomas 1958-4-12 7079 Santa Clara Near Page Mill Road, about 3.7 miles from Stanford University. 121 Comment
  CAS-BOT-BC40277  Caulanthus lasiophyllus John H. Thomas 1975-4-27 17823 San Benito Pinnacles National Monument. Pinnacles Loop Trail. 762 Comment
  CAS-BOT-BC40521  Caulanthus lasiophyllus J. H. Thomas 1967-4-10 12600 Fresno Jacalitos Hills, eastern margin of the Inner Coast Range, between Warthan and Jacalitos creeks. 304 Comment
  JROH1523  Caulanthus lasiophyllus John H. Thomas 1963-3-20 10024 San Mateo Jasper Ridge Biological Preserve, Stanford University; near poppy knoll Comment
  JROH1525  Caulanthus lasiophyllus John H. Thomas 1968-5-22 14456 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1070984  Ceanothus cordulatus W. D. Thomas 1935-7-2 148 Alpine Ebbet's Pass Markleeville quad, Stanislaus Nat. For. 2682 Comment
  CAS-BOT-BC48356  Ceanothus cuneatus John H. Thomas 1950-4-11 1523 Santa Cruz Below Bielawski Lookout Station between Deer and Kings Creeks. Santa Cruz Mountains. 701 Comment
  VVC3045  Ceanothus integerrimus Tim Thomas, Matt Willis 2014-6-25 6395 Tulare Southern Sierra Nevada Western Divide, Vicinity of Quaking Aspen Camp 2152 Comment
  UC1236529  Ceanothus papillosus var. papillosus J. H. Thomas 1953-5-10 3156 Santa Cruz Foot of Blooms Grade, 3 mi NW of Boulder Creek. 243 Comment
  UC1071252  Ceanothus parvifolius W. D. Thomas 1935-10-24 557 Tuolumne 3 mi s Gin Flat; Yosemite National Park, Yosemite Quad. Comment
  VVC2878  Ceanothus perplexans Tim Thomas, P. J. MacKay 2010-4-13 5058 San Bernardino San Bernardino Mtns., Whitewater River; on slopes north of Catclaw Flats 1130 Comment
  CAS-BOT-BC52231  Ceanothus thyrsiflorus H. A. Thomas; J. H. Thomas 1955-6-26 701 Mendocino Coastal bluffs about 1 mile South of Elk near State Highway 1 45 Comment
  CAS-BOT-BC52322  Ceanothus thyrsiflorus J. H. Thomas 1950-4-30 1729 Santa Cruz Rancho del Oso. 0.2 mile south of mouth of Wadell Creek Comment
  CAS-BOT-BC52326  Ceanothus thyrsiflorus John H. Thomas 1950-4-30 1755 Santa Cruz Near Waddell Forks School, Waddell Creek Valley Comment
  UC1236531  Ceanothus thyrsiflorus John H. Thomas 1950-4-30 1755 Santa Cruz Near Waddell Forks School, Waddell Creek Valley Comment
  CAS-BOT-BC52754  Ceanothus vestitus John H. Thomas 1960-9-16 8908 Inyo Steep canyon leading into Saline Valley from the south. 1828 Comment
  CAS-BOT-BC184979  Cenchrus pauciflorus John H. Thomas 1977-7-14 18824 Fresno Along Highway 41, between Fresno and Lemoore, 5.7 miles north of Kings county line. 18 miles south of center of Fresno. 76 Comment
  JEPS21637  Centaurea calcitrapa John H. Thomas 1955-4-6 4831 San Mateo e facing slope of San Bruno Mountain, just n of South San Francisco San Bruno Mountain, South San Francisco 30 Comment
  JROH586  Centaurea calcitrapa John H. Thomas 1970-7-5 15671 San Mateo Jasper Ridge Biological Preserve, Stanford University; by bridge Comment
  CAS-BOT-BC276955  Centaurea calcitrapa J. H. Thomas 1955-6-10 5206 Santa Clara Along Escondido Road, near Wilbur Hall, Stanford Campus Comment
  RSA176536  Centaurea melitensis John H. Thomas 1963-6-23 10170 San Mateo Jasper Ridge Biological Experimental Area, about 5 mi SW of Palo Alto. Along road at Westridge end of ridge Comment
  CAS-BOT-BC277230  Centaurea solstitialis John H. Thomas 1958-3-19 7044 San Mateo East facing slope of San Bruno Mountain, just north of South San Francisco 91 Comment
  CAS-BOT-BC284486  Centaurea solstitialis J. H. Thomas 1950-11-12 2497 Santa Cruz About 1 mile north of Corralitos Comment
  CAS-BOT-BC271510  Centromadia parryi subsp. rudis J. H. Thomas 1960-8-30 8859 Glenn About 3 miles north of Glenn Comment
  CAS-BOT-BC279286  Centromadia pungens subsp. pungens John H. Thomas 1958-6-26 7284 San Francisco Vacant lot at intersection of Davidson Ave. and 3rd St. Comment
  CAS-BOT-BC388210  Cerastium fontanum subsp. vulgare J. H. Thomas 1954-5-8 4117 Santa Clara In front of Stanford University Museum Comment
  CAS-BOT-BC388406  Cerastium glomeratum John H. Thomas 1970-5-15 15882 Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose 914 Comment
  JROH1693  Cerastium glomeratum John H. Thomas 1971-4-24 15772 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1695  Cerastium glomeratum John H. Thomas 1975-4-18 17786 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH152  Ceratophyllum demersum John Hunter Thomas 1981-7-12 20712 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC179385  Cercis occidentalis John H. Thomas 1955-5-21 5156 A Napa Along State Hwy 128, about 4.5 miles south of Monticello. 167 Comment
  CAS-BOT-BC140719  Cercocarpus betuloides J. H. Thomas 1957-3-16 6512 Ventura Along or near Little Sespe Creek, about 4 miles north of [Filmore] Fillmore 182 Comment
  CAS-BOT-BC135439  Cercocarpus betuloides var. betuloides John H. Thomas 1957-8-25 6846 Santa Cruz Eagle Rock 731 Comment
  UC1127836  Cercocarpus betuloides var. betuloides W. D. Thomas 1935-8-2 193 Mono 1 mi sw of McKay Ranch (in Antelope Valley); Antelope Valley 1950 Comment
  CAS-BOT-BC135548  Cercocarpus betuloides var. betuloides John H. Thomas 1969-4-29 14999 Lake 4.6 miles north of Lower Lake along highway no. 53. Comment
  CAS-BOT-BC277384  Chaenactis glabriuscula var. glabriuscula John H. Thomas 1957-5-3 6728 Los Angeles North of Eagle Rock, about 3-4 miles east of Pasadena 304 Comment
  RSA210920  Chaenactis glabriuscula var. heterocarpha John H. Thomas 1969-4-29 15015 Lake 2.8 miles NE of Middleton Comment
  LA104161  Chamaebatia australis T. Thomas; 1982-4-9 441 Los Angeles Comment
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Mar 6 2022
  CAS-BOT-BC85684  Chamaecyparis lawsoniana John H. Thomas 1966-3-19 11497 Del Norte About 1 mile northeast of Gasquet. Comment
  CAS-BOT-BC279783  Chamaemelum fuscatum John H. Thomas 1966-3-18 11480 Sonoma 2 miles south of Asti as measured along the road along highway 101 Comment
  VVC2110  Chamaesyce micromera Tim Thomas, A. Karl 2012-9-7 5889 San Bernardino Mojave Desert, Valley Mtn. 8.5 miles NE of Twentynine Palms. Top of east complex on NW end. 643 Comment
  CAS-BOT-BC70020  Cheilanthes covillei John H. Thomas 1967-3-22 7573 Los Angeles San Gabriel Mts., Angeles National Forest, Sulphur Springs, about 18 miles NE of center of Pasadena 1219 Comment
  RSA137306  Chenopodium berlandieri var. sinuatum John H. Thomas 1953-10-17 3616 Santa Cruz About 2 miles NW of Boulder Creek on Big Basin-Boulder Creek Hwy. 183 Comment
  JROH1819  Chenopodium californicum John H. Thomas 1966-4-29 11585 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA195571  Chenopodium californicum John H. Thomas 1966-4-29 11585 San Mateo Jasper Ridge Biological Experimental Area, 5 miles SW of Palo Alto. Comment
  CAS-BOT-BC451442  Chimaphila menziesii J. H. Thomas 1954-5-14 4174 Siskiyou Salmon Mountains, Klamath National Forest. Near South Fork of Salmon River, 5 to 9 miles SE of Cecilville 1219 Comment
  CAS-BOT-BC497747  Chlorogalum pomeridianum John H. Thomas 1973-4-28 16732 Santa Clara Mount Hamilton Range; about 1 mi due west of Mount Hamilton Observatory and about 12.5 mi east of the center of San Jose 914 Comment
  CAS-BOT-BC178915  Chorizanthe John H. Thomas 1965-5-15 10656 B Santa Clara Mount Hamilton Range. About 1 miles due W of Mount Hamilton Observatory and about 12.5 miles E of the center of San Jose 914 Comment
  CAS-BOT-BC460896  Chorizanthe John H. Thomas 1958-3-1 7041 G Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip 243 Comment
  CAS-BOT-BC178913  Chorizanthe John H. Thomas 1980-4-27 19904 San Benito Pinnacles National Monument. Between Reservoir and Crest Trail through the HIgh Pinnacles Comment
  CAS-BOT-BC191153  Chorizanthe diffusa John H. Thomas 1953-6-14 3368 Santa Cruz Bracken Brae, about 1.5 miles NW of Boulder Creek - BIg Basin Highway 365 Comment
  CAS-BOT-BC191155  Chorizanthe diffusa John H. Thomas 1956-6-24 6017 Santa Cruz Eagle Rock 731 Comment
  CAS-BOT-BC256970  Chorizanthe membranacea John H. Thomas 1969-5-10 15041 Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose 914 Comment
  CAS-BOT-BC257246  Chorizanthe pungens var. hartwegiana John H. Thomas 1953-6-14 3376 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip 243 Comment
  CAS-BOT-BC257423  Chorizanthe pungens var. pungens John H. Thomas 1950-4-16 1598 Santa Cruz Between Pacific Ocean and Watsonville Slough near mouth of Pajaro River Comment
  CAS-BOT-BC246269  Chorizanthe robusta var. hartwegii J. H. Thomas 1990-4-17 s.n. Santa Cruz Scotts Valley. Glenwood Estates. Base of low cliffs on western side of property Comment
  RSA195598  Chrysanthemum coronarium John H. Thomas 1966-5-31 11653 Santa Cruz Vacant lot at intersection of Franklin and Ocean Streets; Santa Cruz Comment
  CAS-BOT-BC36421  Chrysolepis chrysophylla var. minor J. H. Thomas 1954-2-22 3724 Santa Cruz Pine Mountain, Big Basin Rewoods State Park 670 Comment
  CHSC1145  Chylismia claviformis subsp. aurantiaca E. Thomas 1940-3-3 Imperial Salton Sea. -60 Comment
  CAS-BOT-BC162850  Chylismia claviformis subsp. aurantiaca J. H. Thomas 1949-4-23 442 San Bernardino 8 miles E. of Vidal Junction along Colorado River Aqueduct Road Comment
  JROH2586  Cicendia quadrangularis John H. Thomas 1973-4-20 16579 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC285218  Cichorium intybus J. H. Thomas 1960-8-29 8837 Napa About 1 mile north of Calistoga along highway number 53 Comment
  CAS-BOT-BC285319  Cirsium andersonii John H. Thomas 1961-9-11 9764 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek. Along or near Mono Creek between 3rd and 4th Recesses 3931 Comment
  CAS-BOT-BC285585  Cirsium occidentale var. occidentale John H. Thomas 1973-6-29 16866 Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose 914 Comment
  CAS-BOT-BC280290  Cirsium occidentale var. venustum J. H. Thomas 1954-4-23 3947 Santa Clara Near Loma Prieta Ridge Road 914 Comment
  JROH632  Cirsium occidentale var. venustum John H. Thomas 1963-6-23 10169 San Mateo Jasper Ridge Biological Preserve, Stanford University; at Westridge end of ridge Comment
  CAS-BOT-BC280511  Cirsium quercetorum J. H. Thomas 1958-6-11 7227 San Mateo About 4.3 miles due east of Belmont near Crystal Springs Reservoir 91 Comment
  VVC3134  Cirsium scariosum var. congdonii Tim Thomas 1985-8-16 831 Inyo Southern High Sierra, Cottonwood Lakes Basin, blw Lake 6. 3524 Comment
  CAS-BOT-BC285880  Cirsium vulgare John H. Thomas 1958-6-13 7241 Santa Clara Near North Gate at Moffett Field near Mountain View Comment
  JROH637  Cirsium vulgare John H. Thomas 1973-6-15 16841 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH639  Cirsium vulgare John H. Thomas 1974-8-3 17499 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC285875  Cirsium vulgare John H. Thomas 1958-8-16 7417 Santa Clara Stanford University Campus. In front of Jordan Hall Comment
  JROH638  Cirsium vulgare John H. Thomas 1974-6-30 17460 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA177073  Cirsium vulgare John H. Thomas 1964-8-20 10461 Santa Clara Stanford University, in front of Jordan Hall Comment
  CAS-BOT-BC438851  Cistanthe monandra John H. Thomas 1957-3-30 6550 Riverside 8.1 miles east of Cactus City, about 20 miles east of Coachella. Colorado Desert. 426 Comment
  CAS-BOT-BC228797  Cistanthe umbellata H. A. Thomas; J. H. Thomas 1955-9-10 5451 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess and adjacent Mono Creek. Along shore of Golden Lake 3931 Comment
  CAS-BOT-BC162611  Clarkia John H. Thomas 1973-6-29 16882 Santa Clara About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose, Mount Hamilton Range 914 Comment
  CAS-BOT-BC162612  Clarkia John H. Thomas 1974-5-4 17278 Santa Clara About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose, Mount Hamilton Range 914 Comment
  RSA594913  Clarkia John H. Thomas 1955-7-16 5258 Monterey Santa Lucia Mountains: 4.7 miles E of Nacimiento Summit as measured along the road 503 Comment
  CAS-BOT-BC162553  Clarkia affinis J. H. Thomas 1953-6-13 3320 Santa Cruz Mt. Charley Road, about 0.4 miles west of summit of Santa Cruz-Los Gatos Highway 594 Comment
  CAS-BOT-BC162527  Clarkia affinis John H. Thomas 1980-4-27 19900 San Benito Pinnacles National Monument, between Reservoir and Crest Trail through the High Pinnacles Comment
  CAS-BOT-BC172190  Clarkia concinna John H. Thomas 1961-6-3 9517 Santa Clara Headwaters of Stevens Creek, about 9 miles south of Palo Alto 457 Comment
  CAS-BOT-BC163390  Clarkia purpurea subsp. purpurea John H. Thomas 1961-4-18 9145 C Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose 914 Comment
  CAS-BOT-BC164009  Clarkia purpurea subsp. quadrivulnera John H. Thomas 1960-4-30 8625 Santa Clara Mount Hamilton Range. One mile due west of summit of Mount Hamilton, about 12.5 miles east of center of San Jose 914 Comment
  UCSB68272  Clarkia purpurea subsp. quadrivulnera Thomas, Kathryn; Frye, K. 1993-5-8 Santa Barbara southern foothills of the San Rafael Range; Sedgwick Reserve; near first gate, Long Valley on upper west slope 329 Comment
  CAS-BOT-BC165196  Clarkia rubicunda John H. Thomas 1953-7-14 3461 Santa Cruz Northern end of Hilton Airport, open area between hgihway and airstrip 243 Comment
  CAS-BOT-BC165208  Clarkia rubicunda John H. Thomas 1953-7-29 3552 Santa Cruz Near summit of Bloom's Grade 457 Comment
  JROH3016  Clarkia rubicunda John H. Thomas 1973-6-15 16850 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC165567  Clarkia unguiculata John H. Thomas 1955-7-16 5257 Monterey About 4.7 miles east of Nacimiento Summit as measured along the road 502 Comment
  CAS-BOT-BC165646  Clarkia unguiculata J. H. Thomas 1954-6-24 4299 Santa Clara Stevens Creek near Fremont Avenue, about 3 miles SE of Los Altos Comment
  CHSC1115  Clarkia unguiculata E. Thomas 1940-4-14 San Diego Near Oceanside. Comment
  CSUSB248  Clarkia unguiculata R. Thomasson 1973-6-1 Riverside On Banks Street, adjacent to Fairmount Park in city of Riverside. 289 Comment
  UCSB68304  Claytonia Kathryn Thomas, Kathy Rindlaub 1993-3-7 SR- 47 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Transect B 624 Comment
  CAS-BOT-BC439269  Claytonia exigua subsp. exigua John H. Thomas 1973-4-23 16674 San Benito Pinnacles National Monument. Foot Trail and upper part of Chalone Creek Trail. 762 Comment
  RSA181241  Claytonia exigua subsp. exigua John H. Thomas 1956-5-2 5699 Santa Clara Monte Bello Ridge, about 5 miles south of Los Altos. Vineyard and an abandoned road bordered by chaparral and broad-leaved evergreen forest. 793 Comment
  CAS-BOT-BC439384  Claytonia gypsophiloides John H. Thomas 1961-3-22 9002 Santa Clara At Edenvale, about 5 miles south-east of San Jose. 91 Comment
  CAS-BOT-BC439611  Claytonia parviflora subsp. parviflora John H. Thomas 1961-4-22 9170 Santa Clara Mount Hamilton Range. Between Halls Valley and Smith Creek Ranger Station. 685 Comment
  CAS-BOT-BC439614  Claytonia parviflora subsp. parviflora J. H. Thomas 1954-4-10 3861 Santa Cruz Ben Lomond Sand Hills near Quail Hollow Road. 228 Comment
  CAS-BOT-BC439627  Claytonia parviflora subsp. parviflora J. H. Thomas 1949-6-16 951 Siskiyou 1/4 miles north of Beaver Creek Public Camp, along Beaver Creek; 5 miles north of junction of Beaver Creek and Klamath River; Klamath National Forest. Comment
  RSA159396  Claytonia perfoliata John H. Thomas 1961-3-22 8981 Santa Clara Serpentine hills at Edenvale, about 5 miles SE of San Jose. 91 Comment
  CAS-BOT-BC439799  Claytonia perfoliata John H. Thomas 1979-4-30 19520 San Benito Pinnacles National Monument. Visitors' Center to intersection of Rim Trail and High Peaks Trail via Bear Gulch Reservoir. Comment
  CAS-BOT-BC439979  Claytonia perfoliata subsp. mexicana J. H. Thomas 1958-5-13 7178 San Francisco San Francisco. Western end of Golden Gate Park near the Sloop Gjoa. Area about sea level. Comment
  JROH3353  Claytonia perfoliata subsp. perfoliata John Hunter Thomas 1988-4-6 24371 San Mateo Jasper Ridge Biological Preserve, Stanford University; road near dam Comment
  RSA187559  Claytonia rubra John H. Thomas 1955-4-8 4901 Santa Cruz Sand hills E of Ben Lomond, near Quail Hollow Road. 152 Comment
  RSA60492  Claytonia sibirica John H. Thomas 1949-6-16 943 Siskiyou 1/4 mi north of Beaver Creek Public Camp, along Beaver Creek; 5 mi north of junction of Beaver Creek and Klamath River; Klamath National Forest. Comment
  JROH3404  Clematis lasiantha John H. Thomas 1956-4-7 5628 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3409  Clematis lasiantha John H. Thomas 1966-4-29 11586 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3413  Clematis lasiantha John H. Thomas 1973-3-12 16490 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2872  Clinopodium douglasii John H. Thomas 1969-6-4 15110 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68261  Clinopodium mimuloides Thomas, K. 1994-7-2 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, upper Figueroa Creek 490 Comment
  CAS-BOT-BC499723  Clintonia andrewsiana J. H. Thomas 1950-4-9 1507 Santa Cruz Along Lockhart Gulch Road, about 1/2 mi N of its intersection with Nelson Road; about 2.5 mi NE of Felton 152 Comment
  JEPS24254  Collinsia bartsiifolia var. bartsiifolia J. H. Thomas 1950-5-14 1863 Santa Cruz near summit of Quail Hollow Road (on Ben Lomond side); Ben Lomond Sand Hills 152 Comment
  VVC1690  Collinsia childii Tim Thomas, P. J. MacKay 2011-5-22 5388 San Bernardino San Bernardino Mtns., Upper watershed of the west fork of the Mojave River along FS 2N49. 1454 Comment
  VVC3082  Collinsia childii Tim Thomas, P. J. MacKay 2015-5-10 6613 Los Angeles San Gabriel Mtns, Jackson Lake 1896 Comment
  JEPS24283  Collinsia heterophylla J. H. Thomas 1949-4-25 483 Monterey Parkfield Grade, between Parkfield and Parkfield Junction; Diablo Range Comment
  RSA132382  Collinsia heterophylla John H. Thomas 1953-6-13 3319 Santa Cruz Mt. Charley Road, about 0.4 miles west of summit of Santa Cruz-Los Gatos Highway. 595 Comment
  VVC2659  Collinsia parviflora Tim Thomas 2011-7-5 5461 Inyo Southern High Sierra, Cottonwood Lakes Basin; just northwest of GTC 350 feet above valley floor. 3232 Comment
  VVC2527  Comastoma tenellum Tim Thomas 1982-8-5 462 Inyo Southern High Sierra, Cottonwood Lakes Basin; Eastern ridgeline Woolyback, standing dead Pinus balfouriana. 3553 Comment
  VVC3088  Condalia globosa var. pubescens Tim Thomas, P. J. MacKay 2013-2-23 5918 Riverside Sonoran Desert, South side of the Orocopia Mtns, Salt Ck drainage 468 Comment
  UC1236522  Conium maculatum J. H. Thomas 1953-5-31 3279 Santa Cruz Sunset Beach State Park 22 Comment
  JROH1849  Convolvulus arvensis John Hunter Thomas 1982-7-2 21056 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low-flow crossing Comment
  CAS-BOT-BC285998  Conyza bonariensis John H. Thomas 1958-8-16 7432 Santa Clara Stanford University Campus. In front of Encina Hall Comment
  CAS-BOT-BC288909  Conyza canadensis John H. Thomas 1957-8-25 6840 Santa Cruz Along Highway 9, about 2 miles N of Big Basin junction 487 Comment
  JEPS24498  Conyza canadensis John H. Thomas 1960-9-11 8886 Santa Clara oval in front of Quad; Stanford University campus Comment
  CAS-BOT-BC286122  Conyza canadensis J. H. Thomas 1956-9-29 6457 Los Angeles Pasadena Comment
  CAS-BOT-BC288967  Conyza floribunda J. H. Thomas 1961-12-31 8932 Santa Barbara Along US Highway 101 near Nipomo 91 Comment
  JROH4028  Cordylanthus pilosus subsp. pilosus John H. Thomas 1972-8-18 16151 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA181256  Cordylanthus rigidus subsp. rigidus John H. Thomas 1953-10-3 3577 Santa Cruz Foot of Blooms Grade, 3 miles NW of Boulder Creek. 244 Comment
  RSA181267  Cordylanthus rigidus subsp. rigidus John H. Thomas 1950-9-23 2378 Santa Cruz Foot of Blooms Grade, 3 miles NW of Boulder Creek. 244 Comment
  RSA654517  Coreopsis calliopsidea Katherine Thomas 1988-3-9 17 San Bernardino 3.5 miles NE of Kramer Junction (aka Beecher's Corners or Four Corners) on Fish and Game land. Comment
  CAS-BOT-BC101550  Corethrogyne filaginifolia John H. Thomas 1956-6-24 6015 Santa Cruz Near summit of Quail Hollow Road 304 Comment
  CAS-BOT-BC212077  Cornus nuttallii J. H. Thomas 1949-6-15 929 Trinity About 7 miles north of Weaverville, along Trail to Trinity Alps, Trinity National Forest 914 Comment
  RSA187372  Cornus nuttallii H. A. Thomas, J. H. Thomas, Alan Thomas 1954-7-21 4437 Siskiyou Salmon - Trinity Mts. About 6 miles SE of Cecilville. West side of Rush Creek. 1159 Comment
  UCR209098  Cornus nuttallii Tim Thomas, P. J. MacKay 2009-5-23 4744 San Bernardino San Bernardino Mountains, FS Road 2N45 just below the intersection with FS Road 2N49 1628 Comment
  JROH1864  Cornus sericea subsp. sericea John H. Thomas 1961-5-5 9211 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek below Searsville Dam 76 Comment
  JROH1877  Cornus sericea subsp. sericea John Hunter Thomas 1986-5-1 23987 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek near low flow crossing Comment
  CAS-BOT-BC210569  Cornus sessilis J. H. Thomas 1949-6-15 930 Trinity About 7 miles north of Weaverville along trail to Trinity Alps. Trinity National Forest 914 Comment
  JROH4975  Cortaderia selloana John Hunter Thomas 1982-7-3 21060 San Mateo Jasper Ridge Biological Preserve, Stanford University. Lake edge Comment
  CAS-BOT-BC180294  Corylus cornuta subsp. californica J. H. Thomas 1950-2-26 1242 Santa Cruz About 1 mile S of Saratoga Gap Comment
  CAS-BOT-BC180298  Corylus cornuta subsp. californica J. H. Thomas 1954-3-5 3748 Santa Cruz Big Basin - Boulder Creek Highway near intersection of Jamison Road 243 Comment
  JROH1331  Corylus cornuta subsp. californica John H. Thomas 1959-4-5 7668 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA131815  Corylus cornuta var. californica John H. Thomas 1949-10-9 1126 Santa Cruz Near Highway 9 about 1 mile north of drinking fountain toward Saratoga Summit. 457 Comment
  RSA187378  Corylus cornuta var. californica John H. Thomas 1950-10-1 2456 Santa Cruz Along Alba Grade, west of Ben Lomond. Comment
  JROH3646  Cotoneaster pannosus John Hunter Thomas 1983-7-20 22901 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC287300  Cotula australis John H. Thomas 1965-4-29 10609 San Mateo San Bruno Mt in N part of county 396 Comment
  CAS-BOT-BC286998  Cotula coronopifolia J. H. Thomas 1949-10-23 1199 Santa Cruz Along coast at western end of Cliff Drive, Santa Cruz Comment
  CAS-BOT-BC290292  Cotula coronopifolia John H. Thomas 1955-5-21 5080 Solano Along north shore of Carquinez Straight, 1.4 miles east of the center of Benecia Comment
  RSA187314  Cotula coronopifolia John H. Thomas 1953-4-26 3014 Solano Rio Vista Junction; around railroad tracks and highway overpass 15 Comment
  CAS-BOT-BC427734  Crassula connata J. H. Thomas 1958-1-11 6976 San Diego Torrey Pines State Park, northern part of city of San Diego Comment
  CAS-BOT-BC427833  Crassula connata John H. Thomas 1965-4-29 10630 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC427879  Crassula connata J. H. Thomas 1954-3-5 3766 Santa Cruz Northern end of Hilton Airport between Airstrip and Highway. 243 Comment
  CAS-BOT-BC427886  Crassula connata J. H. Thomas 1953-5-2 3075 Santa Cruz Sunset Beach State Park, near USG&GS Markers: Park 1931 and Park 2 - 1931. 15 Comment
  CAS-BOT-BC427893  Crassula connata J. H. Thomas 1954-4-30 4055 Santa Cruz Northern end of Hilton Airport, between airstrip and highway. 243 Comment
  CAS-BOT-BC427895  Crassula connata J. H. Thomas 1955-3-21 4722 Santa Cruz Jamison Creek Road near intersection of Big Basin - Boulder Creek Highway. 243 Comment
  JROH1887  Crassula connata John H. Thomas 1973-3-12 16482 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC427685  Crassula connata John H. Thomas 1978-4-23 19111 San Benito Pinnacles National Monument. High Peaks, Condor Gulch, Bear Gulch trail loop. 762 Comment
  CAS-BOT-BC427937  Crassula tillaea John H. Thomas 1966-3-22 11541 Marin About 1 mile from Tomales along highway 1 toward Tomales Bay. Comment
  JROH3650  Crataegus monogyna John H. Thomas 1965-4-10 10560 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA195688  Crepis bursifolia John H. Thomas 1958-8-16 7401 Santa Clara Memorial Court, Stanford University Campus Comment
  JROH1957  Croton setiger John H. Thomas 1967-11-5 14131 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4983  Crypsis schoenoides John Hunter Thomas 1980-11-27 20194 San Mateo Jasper Ridge Biological Preserve, Stanford University. Old bathing beach area Comment
  JROH4995  Crypsis schoenoides John Hunter Thomas 1988-10-17 24598 San Mateo Jasper Ridge Biological Preserve, Stanford University; on delta in lake Comment
  CAS-BOT-BC190185  Crypsis vaginiflora John H. Thomas 1965-10-6 11455 Santa Clara Edge of Lagunita which is now dry. Near Junipero Serra Boulevard. Stanford University. Comment
  RSA176685  Crypsis vaginiflora John H. Thomas 1961-5-4 9199 Santa Clara Stanford University Campus. Lake Lagunita Comment
  CAS-BOT-BC189250  Cryptantha John H. Thomas 1958-4-19 7125 Napa About 2 miles SW of Oakville 152 Comment
  VVC2975  Cryptantha barbigera Tim Thomas, G Rink, A Schuab 2014-3-24 6187 San Bernardino Mojave Desert, Alluvial fan 1.3 mi SW of Galway Dry Lk 861 Comment
  VVC2340  Cryptantha circumscissa var. circumscissa Tim Thomas, D. Slakey 2012-7-21 5841 Inyo Southern High Sierra, Cottonwood Creek across from old pack station, now reveged, ca. 0.25 mi blw ck xing, in old LADWP campground. 2892 Comment
  VVC2616  Cryptantha glomeriflora Tim Thomas 2010-7-7 5238 Inyo Southern High Sierra, Cottonwood Lakes Basin; E base Mesa 3152 Comment
  VVC2834  Cryptantha micrantha Tim Thomas 2014-4-12 6253 Kern Mojave Desert, 4.5 miles S of Cantil 640 Comment
  JROH1374  Cryptantha microstachys John H. Thomas 1973-4-7 16518 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1379  Cryptantha microstachys John Hunter Thomas 1992-4-23 25164 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2071  Cryptantha muricata var. muricata Tim Thomas, P. J. MacKay 2011-6-18 5432 San Bernardino San Bernardino Mtns, SE of Lk Silverwood on FS2N33/Pilot Knob 1226 Comment
  VVC1936  Cryptantha nevadensis var. rigida Tim Thomas, PJ MacKay, D Charleton 2003-5-17 3071 San Bernardino San Bernardino Mtns, West end on PCT in vic of Hwy 15. 966 Comment
  VVC2831  Cryptantha oxygona Tim Thomas, Nick Jensen 2014-5-3 6279 Kern Tehachapi Mountains, West of Los Alamos Cyn on south slope 1142 Comment
  VVC3034  Cryptantha simulans Tim Thomas, Matt Willis 2014-6-25 6393 Tulare Southern Sierra Nevada Western Divide, Vicinity of Quaking Aspen Camp 2152 Comment
  CAS-BOT-BC70518  Cryptogramma cascadensis John H. Thomas 1957-9-3 6890 Fresno Sierra Nevada, vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek 3657 Comment
  RSA133288  Cryptogramma cascadensis John H. Thomas 1957-9-3 6890 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Between Gold Lake and Mono Mesa. 3353 Comment
Read comments
Dec 16 2014
  CAS-BOT-BC80799  Cupressus macrocarpa John H. Thomas 1976-6-15 18283 Sonoma Southern end of Sea Ranch, northwestern part of country, about 7 miles south of Gualala. Coastal bluffs. 30 Comment
  CAS-BOT-BC287331  Cynara cardunculus J. H. Thomas 1958-10-21 7487 San Mateo Near intersection of Bayshore Highway and Main St, Redwood City, near slough Comment
  CAS-BOT-BC287332  Cynara cardunculus J. H. Thomas 1958-10-21 7487 San Mateo Near intersection of Bayshore Highway and Main St, Redwood City, near slough Comment
  CAS-BOT-BC287349  Cynara cardunculus J. H. Thomas 1955-6-16 5212 Santa Clara Near intersection of Mayfield Ave and Frenchman's Rd, Stanford University Campus Comment
  UC1195195  Cynara cardunculus subsp. cardunculus John H. Thomas 1960-6-25 8800 San Mateo between railroad tracks and El Camino Real (along creek running into Redwood Slough, near Maple Street, Redwood City); Redwood City, Redwood Slough 7 Comment
  CAS-BOT-BC190208  Cynodon dactylon John H. Thomas 1950-5-14 1859 A Santa Cruz About 1 mile south of Olympia along road to Zayante. Comment
  RSA195569  Cynodon dactylon John H. Thomas 1966-4-24 11581 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Comment
  CAS-BOT-BC190309  Cynodon dactylon J. H. Thomas 1955-6-21 5213 Santa Clara Palo Alto. Near Southern Pacific Station. Comment
  JROH1390  Cynoglossum grande John H. Thomas 1958-2-15 6986 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1394  Cynoglossum grande John Hunter Thomas 1981-5-14 20573 San Mateo Jasper Ridge Biological Preserve, Stanford University; near old shack riders shack Comment
  CAS-BOT-BC190428  Cynosurus echinatus John H. Thomas 1976-6-18 18359 Sonoma About 4.6 miles west of Warm Springs Dam, between Skaggs Springs and Geyserville. Comment
  CAS-BOT-BC114483  Cyperus eragrostis J. H. Thomas 1959-8-15 8061 Santa Clara Along banks and bottom of San Francisquite Creek between University Ave and Bayshore Freeway. 0 Comment
  CAS-BOT-BC114507  Cyperus eragrostis J. H. Thomas 1953-5-31 3297 Santa Cruz Along Pajaro River about 5.5 mi E of Watsonville. Comment
  JROH4381  Cyperus eragrostis John Hunter Thomas 1982-11-6 21205 San Mateo Jasper Ridge Biological Preserve, Stanford University. Delta along edge of Searsville Lake. Comment
  RSA140833  Cyperus eragrostis John H. Thomas 1953-10-17 3607 Santa Cruz Pasatiempo Golf Course between Scott Valley and Santa Cruz. Comment
  CAS-BOT-BC114485  Cyperus eragrostis J. H. Thomas 1958-8-16 7440 Santa Clara Lawn weeds of the Stanford Univ Campus. Between Eating Clubs and Toyon Hall Comment
  SEINET7581644 Image available Cyperus eragrostis J. H. Thomas 1961-6-27 9571 Santa Clara Stanford University Campus, edge of lawn between Toyon Hall and eating clubs. Comment
  JROH4391  Cyperus erythrorhizos John H. Thomas 1974-10-29 17643 San Mateo Jasper Ridge Biological Preserve, Stanford University. Small peninsula created by drainage channel cut to accommodate water from Corte Madera Cr. Comment
  JROH23  Cystopteris fragilis John Hunter Thomas 1992-4-23 25153 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Rattlesnake Rocks and along trail to redwoods Comment
  CAS-BOT-BC67973  Cystopteris fragilis J. H. Thomas 1949-4-5 225 Santa Clara Between Lick Obervatory and San Jose. Mt. Hamilton Range Comment
  RSA140884  Cytisus monspessulanus John H. Thomas 1950-5-6 1770 Santa Cruz About 1 miles up Boulder Creek from town of Boulder Creek. 168 Comment
  RSA133312  Cytisus scoparius John H. Thomas 1958-7-15 7229 San Francisco West slope of Mt. Sutro. 183 Comment
  JROH5017  Dactylis glomerata John Hunter Thomas 1977-6-16 18753 San Mateo Jasper Ridge Biological Preserve, Stanford University. Weedy area near old racing oval Comment
  JROH5020  Dactylis glomerata John Hunter Thomas 1980-5-27 19990 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5024  Dactylis glomerata John Hunter Thomas 1985-5-21 23665 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near bridge Comment
  RSA187176  Danthonia californica var. californica John H. Thomas 1954-5-7 4097 Santa Cruz On top of ridge between Scott and Mill Creek drainages, about 2.2 miles S-SW of Eagle Rock. 518 Comment
  CAS-BOT-BC76192  Darlingtonia californica John H. Thomas 1966-3-19 11493 Del Norte Near Highway 119 between Crescent City and Gasquet about 4-5 miles west of Gasquet near Myrtle Creek. Comment
  JROH223  Daucus pusillus John H. Thomas 1968-5-22 14455 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA176777  Daucus pusillus John H. Thomas 1963-5-20 10137 San Mateo Ano Nuevo Island, 1/2 mile off shore and about 20 miles NW of Santa Cruz. Comment
  UC1179139  Daucus pusillus J. H. Thomas 1953-5-31 3274 Santa Cruz just back of beach Sunset Beach State Park 22 Comment
  CAS-BOT-BC293787  Deinandra corymbosa John H. Thomas 1953-10-3 3586 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip 243 Comment
  CAS-BOT-BC299197  Deinandra corymbosa subsp. corymbosa J. H. Thomas 1949-10-16 1152 San Mateo Just north of outlet of San Gregorio Creek Comment
  UC1252075  Delairea odorata J. H. Thomas 1959-12-31 8522 Santa Clara along Moody Road near Pink Horse Ranch (about 2 mi sw of center of Los Altos) 6 Comment
  CAS-BOT-BC292116  Delairea odorata John H. Thomas 1956-12-23 6480 San Mateo At 198 Oak Court, Menlo Park Comment
  HSC95837  Delphinium decorum subsp. tracyi Kevin Thomas 2004-4-26 14 Humboldt Titlow Hill Rd. Comment
  CAS-BOT-BC8754  Delphinium glaucum J. H. Thomas; H. A. Thomas 1954-7-25 4537 Siskiyou Salmon-Trinity Mountains. Vicinity of Rush Lake and Rush Creek Meadow, 9 miles E of Cecilville 1981 Comment
  JROH3443  Delphinium hesperium subsp. hesperium John H. Thomas 1974-5-29 17396 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC116393  Delphinium patens subsp. hepaticoideum John H. Thomas 1957-5-11 6750 Los Angeles San Gabriel Mtns: About 3 miles north of La Canada near Angeles Crest Highway. 762 Comment
  CAS-BOT-BC116447  Delphinium patens subsp. patens J. H. Thomas 1981-4-20 20341 Sutter Sutter Buttes. 1/2-3/4 miles eastward of Dean Place 182 Comment
  CAS-BOT-BC121684  Delphinium patens subsp. patens J. H. Thomas 1973-4-28 16718 Santa Clara Mt Hamilton Range. About 1 mi due W of Mt. Hamilton Observatory and about 12.5 mi E of San Jose 914 Comment
  JROH3451  Delphinium patens subsp. patens John H. Thomas 1967-4-28 12718 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC7939  Delphinium variegatum John Hunter Thomas 1969-4-24 14914 San Mateo near Canada College, Redwood City, near Farm Hill Drive Comment
  JROH3463  Delphinium variegatum subsp. variegatum John H. Thomas 1955-5-6 4977 San Mateo Jasper Ridge Biological Preserve, Stanford University. Open serpentine area on top of ridge and adjacent grassy slopes Comment
  JROH3465  Delphinium variegatum subsp. variegatum John Hunter Thomas 1978-4-20 19088 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC651  Dendromecon rigida subsp. rigida J. H. Thomas 1950-12-16 2512 Santa Cruz Eagel Rock. 731 Comment
  CAS-BOT-BC679  Dendromecon rigida subsp. rigida J. H. Thomas 1951-2-18 2551 A Santa Cruz Vicinity of Loma Prieta, summit of Santa Cruz Mtns. 899 Comment
  YM-YOSE59326  Deschampsia cespitosa W. D. Thomas 1935-9-12 476 Tuolumne 1/2 MILE S OF IRELAND LAKE. 3413 Comment
  UC1131413  Deschampsia cespitosa subsp. cespitosa W. D. Thomas 1935-9-19 497 Mariposa 1 1/2 mi. e.-n.e. Bunnell Pt.; Yosemite Nat'l Park, Mt. Lyell Quad. Comment
  UC1142970  Deschampsia cespitosa subsp. cespitosa W. D. Thomas 1935-9-12 472 Tuolumne 1/2 mi. s. of Ireland Lake (Mt. Lyell); Yosemite Nat'l Park, Mt. Lyell 3413 Comment
Read comments
Jun 14 2012
  CAS-BOT-BC192604  Deschampsia cespitosa subsp. holciformis John H. Thomas 1976-6-16 18345 Sonoma Southern part of Sea Ranch, northwestern part of county, about 7 miles south of Gualala 30 Comment
  JROH5047  Deschampsia danthonioides John H. Thomas 1975-5-26 17917 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5070  Deschampsia elongata John Hunter Thomas 1985-5-22 23670 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC43194  Descurainia pinnata subsp. brachycarpa John H. Thomas 1957-4-6 6610 San Bernardino Mojave Desert. 1.4 miles north of Yucca Valley on road to Lucerne Valley, about 19 miles W of town of Twentynine Palms. 914 Comment
  CAS-BOT-BC43481  Descurainia sophia John H. Thomas 1959-3-25 7618 Kern Randsburg. 1066 Comment
  CAS-BOT-BC587  Dicentra formosa J. H. Thomas 1960-4-12 8587 Santa Cruz Rancho del Oso. Along Waddell Creek, about 2 miles from the coast. 45 Comment
  UC855120  Dicentra formosa Herbert A. Thomas 1936-6-4 87 Plumas Meadow Valley Creek; near creek fork on road to Camp Califorest 1158 Comment
  CAS-BOT-BC483636  Dichelostemma capitatum J. H. Thomas 1950-5-14 1867 Santa Cruz Ben Lomond Sand Hills near summit of Quail Hollow Road on Ben Lomond side 152 Comment
  CAS-BOT-BC499445  Dichelostemma capitatum J. H. Thomas 1949-2-22 3 Los Angeles San Clemente Island, near Wilson's Cove. Comment
  CAS-BOT-BC500929  Dichelostemma capitatum John H. Thomas 1971-5-2 15849 San Mateo Near the intersection of Canada and Edgewood roads, about 4 mi SW of center of Redwood City 304 Comment
  JROH4657  Dichelostemma capitatum subsp. capitatum John H. Thomas 1974-4-13 17148 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA132369  Dichondra donelliana John H. Thomas 1960-3-17 8545 San Francisco Bernal Heights, Open, grassy summit of low hill 107 Comment
  JEPS23865  Digitalis purpurea J. H. Thomas 1954-6-24 4345 Santa Cruz about 5 mi from Boulder Creek (along China Grade) 304 Comment
  RSA176595  Digitalis purpurea John H. Thomas 1961-5-6 9239 Santa Cruz Rancho del Oso. Redwoods along Waddell Creek, about 2-3 miles inland. 30 Comment
  CAS-BOT-BC209102  Digitaria sanguinalis John H. Thomas 1960-9-11 8889 Santa Clara Oval in front of Quad, Stanford University Campus Comment
  JROH5079  Digitaria sanguinalis John Hunter Thomas 1981-9-24 20747 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC209101  Digitaria sanguinalis J. H. Thomas 1964-9-28 10506 Santa Clara Between Memorial Church and English Department, Stanford University Campus. Comment
  CAS-BOT-BC150362  Diplacus aurantiacus John H. Thomas 1955-5-21 5099 Napa Sarco Creek drainage, near State Highway No. 37, about 6 miles from Napa 274 Comment
  CAS-BOT-BC150412  Diplacus aurantiacus John H. Thomas 1958-7-15 7304 San Francisco North arm of Lake Merced between boat house and foot Bridge 7 Comment
  CAS-BOT-BC152033  Diplacus aurantiacus John H. Thomas 1955-5-11 5027 A Santa Cruz Ridge between Little Basin Creek and Mill Creek, about 2.3 miles southwest of Eagle Rock 487 Comment
  CHSC7162  Diplacus aurantiacus Lynn R. Thomas 1969-3-30 31 Monterey E edge of Crest Rd., ca 1.0 mi E of Calif. 1, Carmel Highlands, between Wildcat and Malpaso Creeks. 121 Comment
  CHSC1758  Diplacus brevipes E. Thomas 1940-5-26 Riverside Temecula Canyon. Comment
Read comments
Mar 27 2011
  CAS-BOT-BC153108  Diplacus fremontii J. H. Thomas; R. S. Ferris; W. Ernst 1956-7-15 6079 San Benito Near Clear Creek, about 6 miles SW of Idria 792 Comment
  CAS-BOT-BC153980  Diplacus rattanii John H. Thomas 1956-7-2 6027 A Santa Cruz Ben Lomond Sand Hills 304 Comment
  CAS-BOT-BC151352  Diplacus tricolor John H. Thomas 1967-5-28 12916 Merced Along highway 140, about 3 miles east of Planada Comment
  UC1252112  Dipsacus fullonum J. H. Thomas 1953-10-24 3642 Santa Cruz Mouth of Waddell Creek and vicinity in nw part of county Waddell Creek Comment
  RSA133892  Dipsacus sativus John H. Thomas 1958-6-11 7229 San Mateo About 4.3 miles due E of Belmont near Crystal Springs Reservoir. 91 Comment
  JROH4202  Dirca occidentalis John H. Thomas 1968-2-11 14144 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA195562  Dirca occidentalis John H. Thomas 1967-3-13 12409 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles SW of Palo Alto Comment
  RSA176414  Disporum hookeri var. hookeri John H. Thomas 1964-4-19 10328 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Area below dam. Comment
  CAS-BOT-BC195734  Distichlis spicata J. H. Thomas 1958-6-13 7249 Santa Clara Two miles N. of Milpitas near Alameda-Santa Clara Co. line near East Bay Freeway Comment
  CAS-BOT-BC195738  Distichlis spicata J. H. Thomas 1950-9-24 2401 Santa Cruz Between Watsonville Slough and Pacific Ocean near mouth of Pajaro River and Palm Springs Speedway Comment
  JROH3382  Dodecatheon hendersonii John H. Thomas 1958-2-15 6987 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA140828  Downingia ornatissima var. eximia John H. Thomas 1960-5-14 8723 Stanislaus Near Hwy 120 near Knights Ferry. 91 Comment
  VVC2627  Draba sharsmithii Tim Thomas, P. J. MacKay 2006-7-12 3913 Inyo Southern High Sierra, Cottonwood Lakes Basin; mid slope on east Wooly Back ridge. 3750 Comment
  CAS-BOT-BC41335  Draba sierrae John H. Thomas 1961-9-12 9769 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek. 3505 Comment
  JROH1507  Draba verna J. H. Thomas 1980-4-23 19896 San Mateo Jasper Ridge Biological Preserve, Stanford University; in road below dam Comment
  CAS-BOT-BC41433  Draba verna John H. Thomas 1968-4-20 14342 Mendocino Seven miles north of Laytonville near highway 101. Comment
  CAS-BOT-BC159628  Drymocallis glandulosa var. glandulosa John H. Thomas 1955-5-21 5100 Napa Sarco Creek drainage, near State Highway No. 37, about 6 miles from Napa 274 Comment
  JROH3734  Drymocallis glandulosa var. wrangelliana John H. Thomas 1967-6-1 12973 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA195548  Drymocallis glandulosa var. wrangelliana John H. Thomas 1953-5-23 3171 Santa Cruz Near summit of Santa Cruz, Los Gatos Hwy, State Hwy 17. 549 Comment
  VVC3131  Drymocallis lactea var. lactea Tim Thomas 2013-7-12 6134 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin. Lake 6. 3585 Comment
  CAS-BOT-BC71011  Dryopteris arguta John H. Thomas 1950-4-9 1510 Santa Cruz Between Saratoga Summit and Boulder Creek, 5.6 miles south of the summit as measured by the road Comment
  JROH37  Dryopteris arguta John Hunter Thomas 1980-11-12 20162 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  CAS-BOT-BC428405  Dudleya lanceolata John H. Thomas 1957-5-31 6793 Los Angeles Occidental College Campus, Los Angeles. Hills behind campus. Comment
  JROH1810  Dysphania ambrosioides John H. Thomas 1974-10-29 17642 San Mateo Jasper Ridge Biological Preserve, Stanford University; small peninsula created by drainage channel cut to accommodate water from Corte Madera Cr. Comment
  JROH1814  Dysphania ambrosioides John Hunter Thomas 1979-9-9 19719 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC197018  Echinochloa colona J. H. Thomas 1961-9-3 9714 A Alameda About 2.1 miles SW of Pleasanton along road to Niles Comment
  RSA176942  Echinochloa colona John H. Thomas 1963-8-1 10232 Santa Clara Palo Alto. Corner of Alma and Loma Verde. Comment
  CAS-BOT-BC197040  Echinochloa colona John H. Thomas 1976-9-1 18385 Santa Clara Stanford University Campus. Living area. Raimundo Way and Cottrell Way Comment
  CAS-BOT-BC197061  Echinochloa crus-galli J. H. Thomas 1960-8-30 8853 Glenn About 0.7 miles north of Ordbend Comment
  JROH5084  Echinochloa crus-galli John H. Thomas 1974-10-29 17652 San Mateo Jasper Ridge Biological Preserve, Stanford University. Small peninsula created by drainage channel cut to accommodate water from Corte Madera Cr. Comment
  JROH5090  Echinochloa crus-galli John Hunter Thomas 1981-9-24 20749 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA124763  Echinochloa crus-galli John H. Thomas 1958-9-1 7467 Santa Clara near intersection of Alma Street and California Ave. near Southern Pacific depot. Palo Alto. Comment
  RSA133902  Echinodorus berteroi John H. Thomas 1958-8-9 7381 Santa Clara Lagunita, Stanford University Campus. 23 Comment
  JROH4407  Eleocharis macrostachya John Hunter Thomas 1982-8-13 21138 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB56959  Eleocharis macrostachya Thomas, Kathryn 1987-8-14 Santa Barbara W end of ridge on Righetti Ranch, Casmalia Hills Comment
  RSA176541  Elymus X gouldii John H. Thomas 1963-6-23 10159 San Mateo Along Alpine Road near Ladera Comment
  CAS-BOT-BC227364  Elymus elymoides John H. Thomas 1961-9-9 9743 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo, and Fresno Counties 3718 Comment
  VVC1640  Elymus glaucus Tim Thomas, PJ MacKay, RT Hawke 2004-6-20 3423 San Bernardino San Bernardino Mtns, Little Bear Ck [just east of Lk Arrowhead] upstream from FS Rd 2N26Y. 1433 Comment
  CAS-BOT-BC203546  Elymus glaucus subsp. glaucus John H. Thomas 1976-6-16 18236 Mendocino Russian Gulch State Park, about 2 miles north of Mendocino 30 Comment
  CAS-BOT-BC203681  Elymus glaucus subsp. glaucus John H. Thomas 1961-5-14 9366 San Mateo Vicinity of Pilarcitos Stone Dam on Pilarcitos Creek. San Francisco Watershed Reserve 152 Comment
  CAS-BOT-BC206551  Elymus glaucus subsp. glaucus J. H. Thomas 1961-5-23 9449 Santa Clara Along Page Mill Road, about 4 miles westward from Los Altos 609 Comment
  CAS-BOT-BC206552  Elymus glaucus subsp. glaucus John H. Thomas 1956-5-23 5736 Santa Clara Road bank south to Lake Lagunita, Stanford University Campus 22 Comment
  CAS-BOT-BC206570  Elymus glaucus subsp. glaucus John H. Thomas 1959-6-11 7992 Santa Cruz Along a tributary of San Vicente Creek near Warrenella on the western slope of Ben Lomond Mt., about 5 miles W of Ben Lomond 304 Comment
  CAS-BOT-BC206613  Elymus glaucus subsp. glaucus H. A. Thomas; J. H. Thomas 1954-7-27 4550 Siskiyou About 6 miles SE of Cecilville, south side of South Fork of Salmon River in vicinity of Blind Horse Creek and area 1 mile to SE, Salmon-Trinity Mts. 975 Comment
  JROH5103  Elymus glaucus subsp. glaucus John H. Thomas 1971-5-30 15979 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5105  Elymus glaucus subsp. glaucus John H. Thomas 1973-6-15 16847 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5110  Elymus glaucus subsp. glaucus John Hunter Thomas 1988-5-16 24467 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near low flow crossing. Comment
  CAS-BOT-BC235208  Elymus multisetus John H. Thomas 1971-5-2 15811 San Mateo Near intersection of Canada Road and Edgewood Road, about three miles westward from Redwood City 152 Comment
  JROH5127  Elymus multisetus John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1130627  Elymus sierrae W. D. Thomas 1935-8-20 376 Tuolumne 1 mi n upper Young Lake; Yosemite National Park, Mt. Lyell Quadrangle Comment
  RSA181287  Emmenanthe penduliflora var. rosea John H. Thomas, Roxana S. Ferris, W. R. Ernst 1956-7-15 6077 San Benito Burned slopes near Clear Creek, about 6 miles southwest of Idria 793 Comment
  CHSC313  Encelia actoni E. Thomas 1949-4-9 Riverside Murietta. Comment
  VVC2872  Encelia actoni Tim Thomas, P. J. MacKay 2010-4-10 5051 Riverside San Bernardino Mtns., Whitewater River; Mouth of Catclaw Flat, on ridge to immediate west. 896 Comment
  CAS-BOT-BC81585  Ephedra californica John H. Thomas 1957-4-6 6582 San Bernardino Mojave Desert. About 2 miles north of Indian Cove, Joshua Tree National Monument. About 5 miles west and south of the 822 Comment
  CAS-BOT-BC81742  Ephedra trifurca H. A. Thomas; J. H. Thomas 1954-3-21 427 Inyo Between Tin Mountain and [Grape Vine] Grapevine Mountains 533 Comment
  JROH3046  Epilobium brachycarpum John Hunter Thomas 1981-10-25 20774 San Mateo Jasper Ridge Biological Preserve, Stanford University; on causeway Comment
  RSA187381  Epilobium brachycarpum John H. Thomas 1959-8-27 8100 Santa Clara Near Hwy 101 and Metcalf Road. 1.5 miles NW of Coyote, Santa Clara Valley. 76 Comment
  CAS-BOT-BC166361  Epilobium canum subsp. canum J. H. Thomas 1956-7-14 6063 San Benito On west side of canyon above reservoir at Idria 1280 Comment
  CAS-BOT-BC166521  Epilobium canum subsp. canum J. H. Thomas 1949-10-9 1128 Santa Cruz Near California State Highway #9, about 1 mile north of drinking fountain toward Saratoga Summit 457 Comment
  CAS-BOT-BC166522  Epilobium canum subsp. canum J. H. Thomas 1949-10-9 1128 Santa Cruz Near California State Highway #9, about 1 mile north of drinking fountain toward Saratoga Summit 457 Comment
  CAS-BOT-BC166603  Epilobium canum subsp. canum J. H. Thomas 1953-10-3 3591 Santa Cruz Near California State Highway #9, 1.1 miles north of drinking fountain toward Saratoga Summit 475 Comment
  CAS-BOT-BC166605  Epilobium canum subsp. canum J. H. Thomas 1953-7-15 3489 Santa Cruz Eagle Rock, about 4 miles NW of Boulder Creek 716 Comment
  CAS-BOT-BC166611  Epilobium canum subsp. canum J. H. Thomas 1950-11-12 2494 Santa Cruz Eureka Canyon, near Eureka School 609 Comment
  CAS-BOT-BC166612  Epilobium canum subsp. canum J. H. Thomas 1950-11-12 2494 Santa Cruz Eureka Canyon, near Eureka School 609 Comment
  CAS-BOT-BC171939  Epilobium canum subsp. latifolium John H. Thomas 1966-8-22 12379 Mariposa Yosemite National Park, growing in rock crevice on eastern side of rounded dome just east of Sunrise High Sierra Camp, about 3 miles SE of Teneya Lake 2956 Comment
  JROH3048  Epilobium ciliatum subsp. ciliatum John H. Thomas 1970-7-5 15659 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3050  Epilobium ciliatum subsp. ciliatum John H. Thomas 1973-6-15 16833 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3054  Epilobium ciliatum subsp. ciliatum John Hunter Thomas 1981-7-12 20689 San Mateo Jasper Ridge Biological Preserve, Stanford University; near boat dock Comment
  RSA181278  Epilobium ciliatum subsp. ciliatum John H. Thomas 1954-6-24 4300 Santa Clara Stevens Creek near Fremont Avenue, 3 miles SE of Los Altos Comment
  RSA181283  Epilobium ciliatum subsp. watsonii John H. Thomas 1953-6-14 3337 Santa Cruz Marsh at Camp Evers. 152 Comment
  JROH3066  Epilobium densiflorum John Hunter Thomas 1981-5-25 20623 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3068  Epilobium densiflorum John Hunter Thomas 1981-7-12 20703 San Mateo Jasper Ridge Biological Preserve, Stanford University; on old beach Comment
  UC572225  Epilobium obcordatum W. D. Thomas 1935-8-23 382 Tuolumne Shepherd's Crest Yosemite National Forest, Bridgeport Quadrangle (nw end) 3566 Comment
  CAS-BOT-BC57916  Equisetum arvense John H. Thomas 1950-4-15 1533 Santa Cruz Along Pajaro River, just inside of county line in se corner of county. 30 Comment
  CAS-BOT-BC57918  Equisetum arvense John H. Thomas 1950-4-16 1571 A Santa Cruz Pajaro River at Watsonville. Comment
  RSA187174  Equisetum arvense John H. Thomas 1950-4-15 1533 Santa Cruz Along Pajaro River, just inside the county line in SE corner of county. 30 Comment
  CAS-BOT-BC57867  Equisetum hyemale John H. Thomas 1960-4-12 8585 Santa Cruz Along Fall Creek, about 1.5 mi. w. of Felton. 274 Comment
  JROH71  Equisetum telmateia subsp. braunii John Hunter Thomas 1979-9-9 19717 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH69  Equisetum telmateia subsp. braunii John H. Thomas 1976-4-2 18072 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek below dam Comment
  UC1102720  Eragrostis cilianensis J. H. Thomas 1960-9-11 8887 Santa Clara Stanford University Campus; Oval in front of Quad. Comment
  CAS-BOT-BC204610  Eragrostis mexicana subsp. virescens J. H. Thomas 1960-8-5 8829 Santa Clara Stanford Campus. Near intersection of Alvarado Row and Coronado Ave. Comment
  CAS-BOT-BC284172  Eragrostis pectinacea var. pectinacea J. H. Thomas 1959-7-30 8048 Santa Clara Stanford University Campus Comment
  JROH5140  Eragrostis pectinacea var. pectinacea John H. Thomas 1974-10-29 17646 San Mateo Jasper Ridge Biological Preserve, Stanford University. Small peninsula created by drainage channel cut to accommodate water from Corte Madera Cr. Comment
  UC1108527  Eragrostis pectinacea var. pectinacea J. H. Thomas 1958-7-24 7359 Santa Clara Stanford University Campus; along Escondido Rd. between Hacienda and Wilbur Hall Comment
  CAS-BOT-BC284177  Eragrostis pectinacea var. pectinacea J. H. Thomas 1958-8-10 7387 Santa Clara Stanford Univesity Experimental Garden Comment
  RSA132411  Erechtites glomeratus John H. Thomas 1959-6-11 8000 Santa Cruz Along Hwy 9, 1 mile NW of Ben Lomond. 152 Comment
  CAS-BOT-BC299890  Erechtites glomeratus John H. Thomas 1967-5-2 12805 San Mateo About 1/4 mile up Market Street from new school in canyon, San Bruno Mountain Comment
  CAS-BOT-BC291244  Erechtites minimus J. H. Thomas 1950-10-1 2472 Santa Cruz Rancho del Oso, about 1 mile inland from the coast. 8.5 miles NW of Davenport Comment
  CAS-BOT-BC291248  Erechtites minimus J. H. Thomas 1959-7-8 8027 Santa Cruz Vicinity of old lumber mill along East Fork of Waddell Creek, about 4 miles inland from the coast line, Rancho del Oso Comment
  RSA140853  Eremocarpus setiger John H. Thomas 1960-8-29 8836 Napa About 1 mile north of Calistoga along highway number 53. Comment
  VVC3290  Eremogone congesta var. suffrutescens Tim Thomas, P. J. MacKay 2017-7-17 7316 Inyo Southern High Sierra, Cottonwood Lakes Basin; above confluence of South Fork and Cottonwood Cks. 2919 Comment
  CAS-BOT-BC160010  Eremothera boothii subsp. boothii J. H. Thomas 1949-4-23 441 San Bernardino About 8 miles east of Vidal Junction, along Colorado River Aqueduct Road Comment
  CAS-BOT-BC160095  Eremothera boothii subsp. condensata J. H. Thomas 1949-4-21 359 San Diego Yaqui Springs. Anza Desert State Park Comment
  VVC2039  Eriastrum densifolium subsp. austromontanum Tim Thomas, Pam MacKay 2008-9-20 4583 Inyo Sierra Nevada Mtns, Independence Creek/Onion Valley Road. 2178 Comment
  RSA136308  Ericameria arborescens subsp. arborescens John H. Thomas 1953-7-14 3444 Santa Cruz About 1.5 miles south of Bielawski Lookout as measured by the road. 701 Comment
  CAS-BOT-BC287537  Ericameria linearifolia John H. Thomas 1967-4-10 12631 Fresno Jacalitos Hills, eastern margin of the Inner Coast Range, between Warthan and Jacalitos creeks, about 2-5 miles southward from Coalinga 304 Comment
  VVC3087  Ericameria nauseosa var. ceruminosa Tim Thomas, P. J. MacKay 2014-10-12 6447 Los Angeles Transverse Range, North of Liebre Mtns, Portal Ridge at mouth of Bleich Cyn. 936 Comment
  CAS-BOT-BC294257  Ericameria nauseosa var. speciosa John H. Thomas 1961-9-14 9775 Mono Gravelly road bank about 3.5 miles up Rock Creek from Tom's Place 2438 Comment
  VVC1849  Ericameria palmeri var. pachylepis Tim Thomas 2006-9-17 4084 San Bernardino San Bernardino Mtns, Upper Santa Ana River drainage. 1482 Comment
  VVC3100  Ericameria suffruticosa Tim Thomas, Colin Thomas, Addison Northam 2013-7-3 6106 .3 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin; Windy Gap 3415 Comment
  UCSB68142  Erigeron canadensis Thomas, Kathryn 1993-9-18 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, upper road, northeast drainage Figueroa Creek 694 Comment
  CAS-BOT-BC297240  Erigeron coulteri H. A. Thomas; J. H. Thomas 1954-9-12 4605 Fresno Mono Creek between 3rd and 4th Recess, vicinity of Mono Pass, Pioneer Basin, Fourth Recess and adjacent Mono Creek, Sierra Nevada 3657 Comment
  UC1118132  Erigeron coulteri W. D. Thomas 1935-8-20 370 Tuolumne 1 mi n of upper Young Lake; Yosemite National Park, Mt. Lyell Quadrangle 3048 Comment
  CAS-BOT-BC300601  Erigeron foliosus var. franciscensis John H. Thomas 1953-7-15 3473 Santa Cruz Along Empire Grade. Ben Lomond Mt. About 2 miles south of its intersection with Jamison Road 762 Comment
  CAS-BOT-BC300602  Erigeron foliosus var. franciscensis John H. Thomas 1953-7-15 3473 Santa Cruz Along Empire Grade. Ben Lomond Mt. About 2 miles south of its intersection with Jamison Road 762 Comment
  CAS-BOT-BC295055  Erigeron glaucus J. H. Thomas 1954-5-28 4256 San Francisco San Francisco. Ocean bluffs at northwest corner of city, just west of Lands End 45 Comment
  CAS-BOT-BC295082  Erigeron glaucus John H. Thomas 1961-5-12 9327 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC295126  Erigeron glaucus John H. Thomas 1976-6-15 18308 Sonoma Southern end of Sea Ranch, northwestern part of county, about 7 miles south of Gualala 30 Comment
  VVC2735  Erigeron pygmaeus Tim Thomas 1991-8-7 1466 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin Watershed. South slope of Wooly Back above Muir Lake. 3613 Comment
  VVC2736  Erigeron pygmaeus Tim Thomas 1987-8-18 1207 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin Watershed. Slope above and north of Muir Lk. 3399 Comment
  YM-YOSE60188  Erigeron pygmaeus W. D. Thomas 1935-8-23 385 Tuolumne NW END OF SHEPHERDS CREST 3566 Comment
  VVC2741  Erigeron tener Tim Thomas, Betty O'Neil 1991-8-8 1477 Inyo Southern High Sierra, Cottonwood Lakes Basin; above Lake 2 3366 Comment
  VVC2744  Erigeron tener Tim Thomas, P. J. MacKay 2006-7-12 3912 Inyo Southern High Sierra, Cottonwood Lakes Basin; mid slope on east Wooly Back ridge. 3750 Comment
  CAS-BOT-BC278489  Eriochloa contracta J. H. Thomas 1960-8-30 8851 Glenn About 0.7 miles north of Ordbend Comment
  CAS-BOT-BC278490  Eriochloa contracta J. H. Thomas 1960-8-30 8851 Glenn About 0.7 miles north of Ordbend Comment
  RSA140639  Eriochloa contracta John H. Thomas 1960-8-30 8851 Glenn Roadside ditch about 0.7 miles N of Ordbend Comment
  CAS-BOT-BC224127  Eriodictyon californicum J. H. Thomas 1956-6-24 6007 B Santa Cruz Santa Cruz Mountains. 0.7 miles SW of Eagle Rock 609 Comment
  CHSC685  Eriodictyon trichocalyx var. lanatum E. Thomas 1940-5-26 San Diego San Ysidro mountains near Julian Comment
  CAS-BOT-BC255398  Eriogonum John H. Thomas 1967-4-10 12628 Fresno Jacalitos Hills, eastern margin of the Inner Coast Range between Warthan and Jacalitos Creeks, about 2-5 miles southward from Coalinga 304 Comment
  CAS-BOT-BC255431  Eriogonum John H. Thomas 1973-6-29 16875 Santa Clara About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose, Mount Hamilton Range 914 Comment
  CAS-BOT-BC255432  Eriogonum John H. Thomas 1970-5-15 15919 Santa Clara About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose, Mount Hamilton Range 914 Comment
  VVC1863  Eriogonum baileyi var. baileyi Tim Thomas, PJ MacKay 2001-8-25 2560 San Bernardino San Bernardino Mtns., East end of Summit Valley along Hwy 173. 1012 Comment
  VVC3060  Eriogonum brachypodum Tim Thomas 2015-4-19 6549 San Bernardino Mojave Desert, Johnson Valley, mid Iron Hills on south side. 986 Comment
  VVC2181  Eriogonum cithariforme Tim Thomas, Dave Clendenen 1993-8-1 1662 Santa Barbara Western Transverse Range, Sierra Madre Ridge; Santa Barbara Potrero. 1640 Comment
  UCR209077  Eriogonum davidsonii Tim Thomas, P. J. MacKay 2001-8-25 2559 San Bernardino San Bernardino Mountains, east end of Summit Valley along Hwy 173 1012 Comment
  VVC1853  Eriogonum davidsonii Tim Thomas, PJ MacKay 2003-7-4 2948 San Bernardino San Bernardino Mtns, Fish Creek Aspen area. 2238 Comment
  RSA165906  Eriogonum esmeraldense John H. Thomas 1963-9-9 10255 Mono Deadman's Summit between Tom's Place and Lee Vining along Hwy 395. 2439 Comment
  CAS-BOT-BC249860  Eriogonum esmeraldense var. esmeraldense J. H. Thomas 1963-9-9 10255 Mono Deadman's Summit between Tom's Place and Leevining [Lee Vining] along highway 395 2438 Comment
  UCSB68297  Eriogonum fasciculatum Thomas, Kathryn; Walden, Chris; Emard, Lydia 1993-3-22 Santa Barbara southern foothills of I the San Rafael Range, Sedgwick Reserve, upper ranch Fork B of Figueroa Creek 566 Comment
  CHSC1320  Eriogonum fasciculatum var. foliolosum E. Thomas 1938-3-17 Los Angeles Claremont Comment
  CAS-BOT-BC250544  Eriogonum gracile John H. Thomas 1969-10-19 15478 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  CAS-BOT-BC250548  Eriogonum gracile John H. Thomas 1971-5-2 15823 San Mateo Near intersection of Canada and Edgewater [Edgewood?] roads. About 4 miles SW of center of Redwood City 304 Comment
  RSA136085  Eriogonum latifolium John H. Thomas 1950-10-1 2484 Santa Cruz Near mouth of Waddell Creek, 8.5 miles NW of Davenport Comment
  CAS-BOT-BC259292  Eriogonum lobbii J. H. Thomas 1955-9-15 5496 Inyo Sierra Nevada. N. W. Corner of Inyo County. Between Mono Pass and Ruby Lake 3657 Comment
  VVC1776  Eriogonum maculatum Tim Thomas, PJ MacKay 2008-5-12 4418 San Bernardino San Bernardino Mtns, Lower Marble Canyon. Mine expansion project. 1827 Comment
  VVC1847  Eriogonum microthecum var. ambiguum Tim Thomas, Pam MacKay 2008-9-22 4591 Inyo Sierra Nevada Mtns East Slope, Lower Slope of the east face of the Sierra in vic. Independence Ck along Onion Valley Road. 2134 Comment
  VVC3050  Eriogonum nidularium Tim Thomas 2015-4-19 6554 San Bernardino Mojave Desert, Johnson Valley, mid Iron Hills on south side. 986 Comment
  CAS-BOT-BC268997  Eriogonum nudum var. auriculatum J. H. Thomas 1958-6-11 7226 San Mateo About 4.3 miles due east of Belmont near Crystal Springs Reservoir 91 Comment
  CAS-BOT-BC269040  Eriogonum nudum var. auriculatum J. H. Thomas 1953-5-31 3302 Santa Cruz North of Soda Lake 152 Comment
  CAS-BOT-BC271013  Eriogonum nudum var. decurrens John H. Thomas 1956-7-2 6035 Santa Cruz Ben Lomond Sand Hills 304 Comment
  CAS-BOT-BC264810  Eriogonum nudum var. deductum John H. Thomas; Hazelle A. Thomas 1956-7-21 6161 Placer Vicinity of Donner Pass, about 80 miles northeast of Sacramento, Sierra Nevada 2377 Comment
  VVC2514  Eriogonum nudum var. scapigerum Tim Thomas, P. J. MacKay 2004-7-9 3453 Inyo Southern High Sierra, Cottonwood Lakes Basin; above High Lake 3506 Comment
  VVC2516  Eriogonum nudum var. scapigerum Tim Thomas, PJ MacKay 2007-8-13 4219 Inyo Southern High Sierra, Cottonwood Lakes Basin Watershed. Jenny Lake. 3232 Comment
  CAS-BOT-BC258208  Eriogonum pusillum John H. Thomas 1959-3-25 7628 A Kern Three miles north of Randsburg 792 Comment
  CAS-BOT-BC267975  Eriogonum umbellatum var. argus H. A. Thomas; J. H. Thomas 1954-7-25 4532 Siskiyou Salmon - Trinity Mts. Vicinity of Rush Lake and Rush Creek Meadow. About 9 miles E of Cecilville 1981 Comment
  CDA22674  Eriogonum umbellatum var. bahiiforme L. Thomas, A. Gilbert 1973-10-3 Tulare Long Valley, near Kennedy Meadows. 0 Comment
  VVC1848  Eriogonum umbellatum var. versicolor Tim Thomas, Pam MacKay 2008-9-22 4592 Inyo Sierra Nevada Mtns East Slope, Lower Slope of the east face of the Sierra in vic. Independence Ck along Onion Valley Road. 2134 Comment
  VVC2092  Eriogonum wrightii var. subscaposum Tim Thomas, PJ MacKay 2008-9-20 4581 Inyo Sierra Nevada Mtns, Independence Creek/Onion Valley Road. 2178 Comment
  CAS-BOT-BC297949  Eriophyllum confertiflorum John H. Thomas 1957-5-31 6796 Los Angeles Occidental College Campus, Los Angeles. Hills behind campus Comment
  CAS-BOT-BC304166  Eriophyllum confertiflorum J. H. Thomas 1953-7-29 3553 Santa Cruz Near Summit of Blooms Grade 457 Comment
  UC1189955  Eriophyllum confertiflorum var. confertiflorum J. H. Thomas 1950-12-16 2514 Santa Cruz Eagle Rock 731 Comment
  UCR240523  Eriophyllum lanatum var. obovatum Tim Thomas, P. J. MacKay, David Clendenen 2008-8-30 4573 San Bernardino San Bernardino Mountains, Bluff Lake 2311 Comment
  CAS-BOT-BC302000  Eriophyllum staechadifolium J. H. Thomas 1953-2-8 2769 Santa Cruz Just south of mouth of Waddell Creek Comment
  CAS-BOT-BC296970  Eriophyllum wallacei John H. Thomas 1957-3-30 6569 Riverside Joshua Tree National Monument. About 3 miles southeast of White Tank near the road to Cholla Cactus Garden. About 20 miles northeast of Indio 883 Comment
  VVC2791  Eriophyllum wallacei Tim Thomas, Richard Thomas 1985-6-12 782 Inyo Southern Sierra East slope., Walt's Point below Horseshoe Mdw Rd 2710 Comment
  JROH2596  Erodium botrys John H. Thomas 1971-4-10 15762 C San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2598  Erodium botrys John H. Thomas 1971-4-25 15789 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2602  Erodium botrys John H. Thomas 1975-4-19 17800 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA187347  Erodium brachycarpum John H. Thomas 1950-3-5 1284 Santa Cruz Between Corralitos and Pinto Lake, along east Corralitos Road. About 5 miles north of Watsonville. Comment
  VVC3195  Erodium malacoides Tim Thomas, P. J. MacKay 2016-3-20 6937 San Bernardino Inland Empire, South Coast subregion, North end of The Badlands, Prado Ck. 396 Comment
  CAS-BOT-BC41459  Erysimum ammophilum J. H. Thomas 1950-4-16 1589 Santa Cruz Between Pacific Ocean and Watsonville Slough near mouth of Pajaro River. Comment
  CAS-BOT-BC54685  Erysimum capitatum John H. Thomas 1981-4-30 20439 Sutter Sutter Buttes. Huff Canyon - North Butte area. 304 Comment
  CAS-BOT-BC54873  Erysimum franciscanum John H. Thomas 1965-4-29 10608 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  GH387504  Erysimum teretifolium J. H. Thomas 1950-4-23 1657 Unknown Ben Lomond Sand Hills, along Quail Hollow Road 152 Comment
  CAS-BOT-BC402786  Eschscholzia caespitosa John H. Thomas 1955-5-21 5131 Napa Sarco Creek drainage, near State Highway No. 37, about 6 miles from Napa 274 Comment
  CAS-BOT-BC402806  Eschscholzia caespitosa John H. Thomas 1973-3-29 16510 San Benito Pinnacles National Monument. Vicinity of Pinnacles Rocks 548 Comment
  CAS-BOT-BC403026  Eschscholzia californica John H. Thomas 1967-4-10 12626 Fresno Western Fresno County. Jacalitos Hills, eastern margin of the Inner Coast Range, between Warthan and Jacalitos creeks, about 2-5 miles southward from Coalinga 304 Comment
  CAS-BOT-BC403636  Eschscholzia californica John H. Thomas 1961-3-22 9026 C Santa Clara Hills at Edenvale, about 5 miles south-east of San Jose 91 Comment
  RSA124745  Eschscholzia californica subsp. californica John H. Thomas 1959-6-11 8003 Santa Cruz Along Graham Hill Road about 2 miles southeast of the Felton RR station (as mentioned along the road) 152 Comment
  UCR261876  Eschscholzia minutiflora subsp. covillei Tim Thomas, P. J. MacKay 2014-4-3 6239 San Bernardino Mojave Desert, northern Johnson Valley, 1.6 miles northwest of Bessemer Mine, wash between Iron and Rodman Mountains 1034 Comment
  CAS-BOT-BC202525  Euphorbia H. A. Thomas; J. H. Thomas 1955-7-17 5270 Monterey Santa Lucia Mountains. Vicinity of Nacimiento Summit 914 Comment
  RSA187458  Euphorbia lathyris John H. Thomas 1966-1-30 11472 Marin McClures Beach, Tomales Point. Comment
  UCSB68210  Euphorbia spathulata Thomas, Kathryn; Frye, K. 1993-5-8 Santa Barbara Southern Foothills of the San Rafael Range, Sedqwick Reserve, 300 yards north of gate 2, Long Valley 490 Comment
  RSA176410  Euthamia occidentalis John H. Thomas 1964-10-2 10511 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Edge of Searsville Lake near Bridge. Comment
  CAS-BOT-BC171045  Fagonia laevis John H. Thomas 1957-3-30 6545 Riverside 8.1 miles east of Cactus City, about 20 miles east of Coachella, Colorado Desert 426 Comment
  CAS-BOT-BC278187  Festuca John H. Thomas 1970-4-26 15600 Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory and about 12.5 miles east of the center of San Jose 914 Comment
  JROH5149  Festuca arundinacea John H. Thomas 1978-5-23 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5156  Festuca arundinacea John Hunter Thomas 1985-5-21 23661 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near bridge. Comment
  JROH5158  Festuca arundinacea John Hunter Thomas 1985-5-21 23664 San Mateo Jasper Ridge Biological Preserve, Stanford University; near bridge Comment
  JROH5160  Festuca arundinacea John Hunter Thomas 1987-5-26 24320 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5169  Festuca arundinacea John Hunter Thomas 1992-5-14 25231 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near boat ramp. Comment
  JROH5177  Festuca californica John H. Thomas 1967-5-12 12866 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5481  Festuca microstachys John H. Thomas 1963-5-15 10093 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2882  Festuca octoflora Tim Thomas, P. J. MacKay 2010-4-12 5029 Riverside San Bernardino Mtns, Whitewater River; Mouth of Catclaw Flat, at the Paw. 878 Comment
  JROH5280  Festuca perennis John H. Thomas 1965-4-28 10597 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5284  Festuca perennis John Hunter Thomas 1980-5-1 19911 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5290  Festuca perennis John Hunter Thomas 1987-5-15 24287 A San Mateo Jasper Ridge Biological Preserve, Stanford University. Near low flow crossing. Comment
  JROH2973  Ficus carica John H. Thomas 1967-6-1 12982 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2975  Ficus carica John Hunter Thomas 1979-9-9 19710 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68149  Filago Kathryn Thomas, Wayne Ferren 1993-4-20 SR- 141 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - South end of vernal pool 353 Comment
  RSA133873  Fragaria chiloensis John H. Thomas 1959-3-20 7562 San Luis Obispo Oso Flaco Lake, a dune lake along the coast, 17 miles S of San Luis Obispo County. 8 Comment
  CAS-BOT-BC455962  Fragaria chiloensis John H. Thomas 1976-6-15 18303 Mendocino Southern end of Sea Ranch, northwestern part of county, about 7 miles south of Gualala. 30 Comment
  JROH3666  Fragaria vesca John Hunter Thomas 1981-4-5 20291 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek Comment
  JROH3668  Fragaria vesca John Hunter Thomas 1981-4-23 20486 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC457564  Fragaria vesca subsp. californica J. H. Thomas 1950-2-26 1244 Santa Cruz About 1 mile south of Saratoga Summit along highway number 9. 609 Comment
  CAS-BOT-BC457528  Fragaria vesca subsp. californica J. H. Thomas 1949-3-29 192 San Mateo Kings Mountain. Comment
  VVC3273  Fragaria virginiana Tim Thomas 1988-8-6 1306 Inyo Southern High Sierra, Cottonwood Lakes Basin, vic. trail crossing South Fork Creek Comment
  UCSB68313  Frangula californica Thomas, Kathryn 1993-9-18 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve, upslope at spring near rock outcrop, west 670 Comment
  CAS-BOT-BC53988  Frangula californica subsp. californica John H. Thomas 1955-7-16 5260 Monterey Santa Lucia Mountains - About 4.7 miles east of Nacimiento Summit as measured along the road. 502 Comment
  JROH3546  Frangula californica subsp. californica John Hunter Thomas 1978-7-2 19250 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3548  Frangula californica subsp. californica John Hunter Thomas 1981-2-14 20211 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC211584  Frankenia salina J. H. Thomas 1950-9-24 2396 Santa Cruz Between Watsonville Slough and Pacific Ocean near mouth of Pajaro River, also near Palm Springs Speedway Comment
  CAS-BOT-BC223694  Frankenia salina John H. Thomas 1970-4-15 15581 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River Comment
  UC1195187  Frankenia salina J. H. Thomas 1960-7-13 8815 Santa Clara in salt marsh near Palo Alto Yacht Harbor 0 Comment
  VVC2562  Frasera tubulosa Tim Thomas 1991-8-6 1482 Inyo Southern High Sierra, Cottonwood Lakes Basin; SE shoulder of the Mesa. 3232 Comment
  CAS-BOT-BC130139  Fritillaria affinis J. H. Thomas 1949-4-14 268 San Mateo [King's] Kings Mt. Road Comment
  JROH4686  Fritillaria affinis John Hunter Thomas 1981-4-5 20278 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek Comment
  CAS-BOT-BC422478  Fumaria parviflora John H. Thomas 1961-4-14 9080 Santa Clara Along Junipero Serra Blvd. near Frenchman's Road, Stanford University Campus. 60 Comment
  UCSB68331  Galium Kathryn Thomas 1993-5-1 SR- 188 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - top Mt. Dibble 701 Comment
  VVC1784  Galium angustifolium subsp. angustifolium Tim Thomas, PJ Mackay 2008-5-13 4437 San Bernardino San Bernardino Mtns, Marble Canyon/Mitsubishi expansion area 2008 proposal 1707 Comment
  VVC3315  Galium bifolium Tim Thomas 1985-8-14 799 Inyo Southern High Sierra, Cottonwood Lakes Basin, stringer to Woolyback NW of GTC 3398 Comment
  CAS-BOT-BC223110  Galium hilendiae subsp. kingstonense John H. Thomas 1957-9-3 6896 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Between Gold Lake and Mono Mesa 3657 Comment
  JROH3791  Galium murale John H. Thomas 1967-6-1 12967 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA135739  Galium nuttallii John H. Thomas 1950-3-30 1416 Santa Cruz Soquel Valley. About 5 miles N of Soquel. Comment
  RSA195642  Galium nuttallii John H. Thomas 1950-6-10 1996 Santa Cruz Near State Hwy 9. 1.2 miles N of drinking fountain. 457 Comment
  UCSB68329  Galium nuttallii Kathryn Thomas 1993-2-13 SR- 21 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Transect B 624 Comment
  VVC2076  Galium parishii Tim Thomas, P. J. MacKay 2011-6-25 5446 San Bernardino San Bernardino Mtns, Grays Peak, lower trail. 2064 Comment
  JEPS88935  Galium parisiense John H. Thomas 1961-6-3 9595 Santa Clara about 9 mi s Palo Alto (headwaters of creek); Stevens Creek 609 Comment
  RSA176643  Galium parisiense John H. Thomas 1961-6-3 9505 Santa Clara Headwaters of Stevens Creek, about 9 miles south of Palo Alto. 610 Comment
  JROH3812  Galium porrigens var. porrigens John Hunter Thomas 1981-5-25 20619 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC3036  Galium sparsiflorum subsp. sparsiflorum Tim Thomas, Matt Willis 2014-6-25 6387 Tulare Southern Sierra Nevada Western Divide, Vicinity of Quaking Aspen Camp 2152 Comment
  JROH5574  Gamochaeta ustulata John H. Thomas 1962-5-31 9896 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge end of the ridge Comment
  JROH801  Gamochaeta ustulata John Hunter Thomas 1986-5-6 24004 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH804  Gamochaeta ustulata John Hunter Thomas 1989-5-5 24659 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH806  Gamochaeta ustulata John Hunter Thomas 1992-5-5 25208 San Mateo Jasper Ridge Biological Preserve, Stanford University; near picnic area and vicinity Comment
  CAS-BOT-BC192026  Garrya flavescens J. H. Thomas 1954-4-23 3967 Santa Clara Vicinity of Mt. Umunhum 1036 Comment
  CAS-BOT-BC182233  Garrya fremontii J. H. Thomas 1954-5-14 4186 Siskiyou Salmon Mountains, Klamath National Forest. Near South Fork of Salmon River, 5 to 9 miles southeast of Cecilville 1219 Comment
  CAS-BOT-BC182248  Garrya fremontii J. H. Thomas 1954-5-13 4162 Siskiyou Salmon Mountains, Klamath National Forest. Near South Fork of Salmon River, 5 to 9 miles woutheast of Cecilville 1127 Comment
  JROH5187  Gastridium phleoides John H. Thomas 1977-4-29 18568 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC56232  Gaultheria humifusa H. A. Thomas; J. H. Thomas 1955-9-12 5467 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. 3931 Comment
  VVC2084  Gayophytum decipiens Tim Thomas, P. J. MacKay 2011-6-18 5440 San Bernardino San Bernardino Mtns., Along FS2N33 east of Pilot Rock just west of Grass Valley Ck. 1486 Comment
  VVC2522  Gayophytum racemosum Tim Thomas 2008-7-26 4553 Inyo Southern Sierra Nevada Mtns., Horseshoe Meadow region; Round Meadow. 3011 Comment
  CAS-BOT-BC211892  Genista monspessulana Hazelle A. Thomas; John H. Thomas 1955-6-26 685 Mendocino Pine Barrens about 3 miles southeast of town of Fort Bragg 91 Comment
  CAS-BOT-BC219111  Genista monspessulana John H. Thomas 1960-4-12 8583 A Santa Cruz Near summit of Hillside Drive, Ben Lomond 182 Comment
  JROH2002  Genista monspessulana John Hunter Thomas 1978-5-23 19222 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2528  Gentiana newberryi Tim Thomas, PJ MacKay 2007-8-14 4227 Inyo Southern High Sierra, Cottonwood Lakes Basin Watershed. vic old pasture gate blw Windy Gap 3317 Comment
  VVC2529  Gentianopsis holopetala Tim Thomas, PJ MacKay 2007-8-13 4211 Inyo Southern High Sierra, Cottonwood Lakes Basin Watershed. 0.7 mi from main trail on South Fork. 3113 Comment
  CAS-BOT-BC303613  Geraea canescens John H. Thomas 1959-3-24 7593 San Bernardino 0.5 mile N of Kelso 670 Comment
  JROH2626  Geranium molle John H. Thomas 1973-4-14 16556 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2628  Geranium molle John H. Thomas 1978-4-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA119152  Gilia achilleifolia John H. Thomas 1953-6-13 3321 Santa Cruz Mt. Charley Road, about 0.4 mile west of summit of Santa Cruz-Los Gatos Highway. 595 Comment
  JROH3157  Gilia achilleifolia subsp. multicaulis John Hunter Thomas 1980-4-24 19899 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  UCR209073  Gilia brecciarum Tim Thomas, P. J. MacKay 2003-7-4 2945 San Bernardino San Bernardino Mountains, Fish Creek Aspen area 2238 Comment
  VVC1661  Gilia cana subsp. cana Tim Thomas, PJ MacKay, RT Hawke 2005-7-25 3860 San Bernardino San Bernardino Mtns., Cienaga Seca. 2509 Comment
  CLARK-A346-18  Gilia capitata Loraine Thomas Kern Bakersfield ""Kern Canyon, Bakersfield area""; Gosford 7.5'Q Comment
  RSA185789  Gilia tenuiflora subsp. amplifaucalis John H. Thomas 1950-5-14 1874 Santa Cruz Ben Lomond Sand Hill, near summit of Quail Hollow Road on Ben Lomond side. 152 Comment
Read comments
Feb 15 2015
  CAS-BOT-BC303657  Glebionis coronaria J. H. Thomas 1966-5-31 11653 Santa Cruz Santa Cruz. At intersection of Franklin and Ocean Streets Comment
  CAS-BOT-BC303731  Glebionis segetum John H. Thomas 1966-3-20 11508 Mendocino About 0. 5 mile N of Westport Comment
  CAS-BOT-BC283843  Glyceria John H. Thomas 1957-9-2 6867 Fresno Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Vicinity of lowest lake in Pioneer Basin, growing in water at edge of lake 3139 Comment
  JROH2026  Glycyrrhiza lepidota John Hunter Thomas 1983-7-7 22819 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA176726  Glycyrrhiza lepidota John H. Thomas 1962-7-15 9923 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Along San Francisquito Creek below dam. Comment
  RSA185862  Gnaphalium chilense John H. Thomas 1950-9-24 2399 Santa Cruz Between Watsonville Slough and Pacific Ocean near mouth of Pajaro River and Palm Springs Speedway. Comment
  RSA176647  Gnaphalium palustre John H. Thomas 1961-8-13 9674 Santa Cruz Bog at Camp Evers. 152 Comment
  CAS-BOT-BC110260  Grayia spinosa John H. Thomas 1959-3-25 7621 Kern Randsburg. 1066 Comment
  RSA136164  Grindelia camporum John H. Thomas 1956-10-14 6464 Santa Clara Stanford University Campus. Near Ryan High Voltage Laboratory. 23 Comment
  CAS-BOT-BC304537  Grindelia hirsutula J. H. Thomas 1954-5-28 4243 San Mateo East facing slopes of San Bruno Mountain, just north of South San Francisco 91 Comment
  CAS-BOT-BC314595  Grindelia hirsutula J. H. Thomas 1950-9-24 2387 Santa Cruz Between Watsonville Slough and Pacific Ocean near mouth of Pajaro River adn Palm Springs Speedway Comment
  JROH817  Grindelia hirsutula John H. Thomas 1973-6-15 16848 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH818  Grindelia hirsutula John Hunter Thomas 1978-5-12 19203 San Mateo Jasper Ridge Biological Preserve, Stanford University; draw to Ridge from near the dam Comment
  JROH824  Grindelia hirsutula John Hunter Thomas 1983-6-2 22328 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH826  Grindelia hirsutula John Hunter Thomas 1987-5-26 24316 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA136079  Grindelia stricta var. angustifolia John H. Thomas 1955-8-1 5307 Santa Clara Along Alviso Slough, near South Bay Yacht Club, Alviso. 0 Comment
  RSA134136  Guillenia lasiophylla H. A. Thomas, John H. Thomas 1955-4-2 4761 Santa Clara About 0.5 mile north of Edenvale RR Station, about 5 miles SE of San Jose. 91 Comment
  CAS-BOT-BC504607  Hastingsia alba J. H. Thomas; H. A. Thomas 1954-7-25 4539 Siskiyou Salmon - Trinity Mts. Vicinity of Rush Lake and Rush Creek Meadow. About 9 miles E of Cecilville 1981 Comment
  CAS-BOT-BC309370  Helenium bolanderi J. H. Thomas; H. A. Thomas 1955-6-26 704 Mendocino Near State Highway 1, 2 miles NW of Anchor Bay 30 Comment
  CAS-BOT-BC309565  Helenium puberulum J. H. Thomas 1954-7-9 4364 Santa Clara Carnadero Creek at intersection of Thomas Road, about 1 mile south of Gilroy 60 Comment
  JROH830  Helenium puberulum John H. Thomas 1961-6-14 9542 San Mateo Jasper Ridge Biological Preserve, Stanford University; along stream below dam Comment
  RSA133702  Helenium puberulum John H. Thomas 1954-4-21 3913 Santa Clara In bed of Stevens Creek, near Fremont Ave, 3 miles SE of Los Altos. Comment
  CAS-BOT-BC309557  Helenium puberulum John H. Thomas 1961-7-2 9584 Santa Clara Palo Alto. San Mateo - Santa Clara Co. line along San Francisquito Creek between University Ave. and Newell Road Comment
  JROH851  Helianthella californica var. californica John H. Thomas 1967-5-12 12880 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH854  Helianthella californica var. californica John Hunter Thomas 1980-5-8 19942 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH856  Helianthella californica var. californica John Hunter Thomas 1981-5-8 20564 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH861  Helianthella californica var. californica John Hunter Thomas 1989-5-9 24722 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1832  Helianthemum scoparium John H. Thomas 1961-5-5 9220 San Mateo Jasper Ridge Biological Preserve, Stanford University; at NW end of ridge 152 Comment
  CAS-BOT-BC305926  Helminthotheca echioides John H. Thomas 1955-11-9 5505 San Mateo Fallow Brussel Sprout field near Sanchez Adobe House, San Pedro Valley, about 8.5 miles south of San Francisco - San Mateo County line, and 0.9 mile inland from the ocean Comment
  CAS-BOT-BC305910  Helminthotheca echioides John H. Thomas 1958-6-26 7281 San Francisco San Francisco. At intersection of Davidson Ave. and 3rd St. Comment
  CAS-BOT-BC313464  Hemizonella minima J. H. Thomas 1954-5-13 4128 Siskiyou Near South Fork of Salmon River, 5 to 9 miles southeast of Cecilville, Salmon Mountains, Klamath National Forest 1066 Comment
  CAS-BOT-BC314917  Hemizonia congesta subsp. luzulifolia J. H. Thomas 1962-11-4 10014 San Mateo Jasper Ridge, Stanford University Biological Experimental Area near Westridge end Comment
  JEPS24267  Hemizonia congesta subsp. luzulifolia J. H. Thomas 1959-8-27 8113 Santa Clara about 4.5 mi s from Morgan Hill; Watsonville road 121 Comment
  JROH864  Hemizonia congesta subsp. luzulifolia John H. Thomas 1959-8-22 8078 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH866  Hemizonia congesta subsp. luzulifolia John H. Thomas 1967-11-5 14129 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SD49786  Hemizonia congesta subsp. luzulifolia J. H. Thomas 1958-6-11 7228 San Mateo 4.3 miles due east of Belmont near Crystal Springs Reservoir. 89 Comment
  CAS-BOT-BC309934  Hemizonia congesta subsp. luzulifolia J. H. Thomas 1955-5-20 5079 Solano Mare Island, U. S. Naval Shipyard Comment
  RSA133899  Hemizonia corymbosa subsp. corymbosa John H. Thomas 1959-8-16 8067 San Mateo About 2 miles N of Pigeon Point along the coast. 15 Comment
  RSA133888  Hemizonia corymbosa subsp. macrocephala John H. Thomas 1955-7-17 5287 Monterey Along the coast, 1.4 miles south of Prewitt Creek, near Point Gorda. Comment
  JROH248  Heracleum maximum John H. Thomas 1961-5-5 9210 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek below Searsville Dam 76 Comment
  JROH249  Heracleum maximum John H. Thomas 1961-5-5 9210 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek below Searsville Dam 76 Comment
  RSA152062  Herniaria hirsuta subsp. cinerea John H. Thomas 1962-5-26 9875 Tuolumne Near O Shaughnessy Dam on the north side of Hetch Hetchy Reservoir, Yosemite National Park. 1220 Comment
  CAS-BOT-BC388549  Herniaria hirsuta var. cinerea John H. Thomas 1974-4-23 17221 San Benito Pinnacles National Monument. High Peaks Trail, southern part 762 Comment
  CAS-BOT-BC310185  Hesperevax sparsiflora var. brevifolia John H. Thomas 1953-4-4 2964 Santa Cruz Along Jamison Road, near Big Basin - Boulder Creek Highway 259 Comment
  CAS-BOT-BC403886  Hesperocnide tenella J. H. Thomas 1965-4-26 10592 Santa Clara Palo Alto Regional Park, off Page Mill Road. Along Nature Trail Comment
  CAS-BOT-BC403895  Hesperocnide tenella John H. Thomas 1953-5-31 3311 Santa Cruz Northeast of Soda Lake 152 Comment
  JROH4228  Hesperocnide tenella John H. Thomas 1974-5-19 17384 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH116  Hesperocyparis macrocarpa John Hunter Thomas 1979-9-9 19734 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC176056  Hesperolinon clevelandii John H. Thomas 1955-5-21 5116 Napa Sarco Creek drainage, near State Highway No. 37, about 6 miles from Napa 274 Comment
  RSA159409  Hesperolinon congestum John H. Thomas 1961-5-14 9379 San Mateo Just north of dam on San Mateo Creek. 122 Comment
  UC1219880  Hesperolinon congestum John H. Thomas 1961-5-14 9379 San Mateo road bank and outcropping just n dam on San Mateo Creek 121 Comment
  CAS-BOT-BC176254  Hesperolinon disjunctum J. H. Thomas; R. S. Ferris; W. Ernst 1956-7-14 13040 San Benito Clear Creek, about 3.3 miles SW of Idria 975 Comment
  JROH2923  Hesperolinon micranthum John H. Thomas 1963-5-15 10093 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2925  Hesperolinon micranthum John H. Thomas 1967-5-31 12943 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2936  Hesperolinon micranthum John Hunter Thomas 1983-6-29 22713 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2938  Hesperolinon micranthum John Hunter Thomas 1992-5-25 25342 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC422538  Hesperomecon linearis J. H. Thomas 1951-4-22 2588 Monterey On hills bounding Salinas River flood plain, between Salinas and Monterey near eastern gate of Fort Ord. Comment
  CAS-BOT-BC135905  Hesperoyucca whipplei J. H. Thomas 1955-7-16 5245 Monterey About 1.5 miles east of Nacimiento Summit as measured along the road - Santa Lucia Mountains 701 Comment
  CAS-BOT-BC310973  Heterotheca grandiflora J. H. Thomas 1954-8-12 4573 Santa Clara Summit of Los Gatos - Santa Cruz Highway, State Highway 17, near county line 609 Comment
  CAS-BOT-BC310980  Heterotheca grandiflora John H. Thomas 1950-3-27 1344 A Santa Cruz Between Eagle Rock and Locatelli Ranch 731 Comment
  RSA181311  Heterotheca sessiliflora subsp. echioides John H. Thomas 1965-10-3 11454 Santa Clara Monte Bello Ridge, about 8.5 miles southward from Palo Alto. Between summit of Black Mountain and Page Mill Road. 732 Comment
  CAS-BOT-BC110577  Heuchera John H. Thomas 1964-9-15 10502 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin and upper Mono Creek. South end of Recess Lake. 3657 Comment
  CAS-BOT-BC424225  Heuchera micrantha var. hartwegii John H. Thomas 1961-5-7 9283 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  RSA0063041  Heuchera pilosissima Herbert Thomas 1933-5-12 s.n. Sonoma Near Larkspur Rock. Comment
  CAS-BOT-BC425273  Heuchera rubescens John H. Thomas 1957-9-3 6897 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. 3657 Comment
  CAS-BOT-BC425280  Heuchera rubescens H. A. Thomas; J. H. Thomas; R. W. Holm 1975-7-29 8271 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek; Between lowest and 2nd group of lakes in 4th Recess. 3291 Comment
  CAS-BOT-BC203368  Hibiscus denudatus J. H. Thomas 1949-4-21 375 San Diego Yaqui Springs, eastern part of county Comment
  VVC3255  Hieracium horridum Tim Thomas 1981-8-3 356 Inyo Southern High Sierra,, Cottonwood Lakes Basin drainage, Windy Gap above Carrol Creek. 3323 Comment
  CAS-BOT-BC318660  Hieracium horridum John H. Thomas 1957-9-1 6859 Fresno Between Trail and Summit Lakes, vicinity of Mono Pass, Pioneer Basin, 4th Recess adn adjacent Mono Creek, Sierra Nevada 3505 Comment
  RSA187345  Hierochloe occidentalis John H. Thomas 1954-4-3 3820 San Mateo Along San Gregorio Creek about 1.5 miles west of La Honda. 107 Comment
  CAS-BOT-BC280760  Holcus lanatus J. H. Thomas 1959-6-11 7998 Santa Cruz Along highway no. 9, 1 mile NW. of Ben Lomond 152 Comment
  CAS-BOT-BC280799  Holcus lanatus John H. Thomas 1976-6-16 18337 Sonoma Southern part of Sea Ranch, northwestern part of county, about 7 miles south of Gualala 30 Comment
  JROH5217  Holcus lanatus John Hunter Thomas 1989-5-30 24756 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC235488  Holmgrenanthe John H. Thomas 1973-4-23 16655 San Benito Pinnacles National Monument. HIgh Peaks Trail, southern part 762 Comment
  JEPS24263  Holocarpha macradenia John H. Thomas 1959-8-27 8114 Santa Cruz 3.5 mi ne of Watsonville; Along Hecker Highway, sw of Fairgrounds 30 Comment
  RSA133949  Holocarpha obconica subsp. obconica John H. Thomas 1956-7-14 6056 San Benito New Idria Road from, Panoche to Idria, about 5 miles S of Panoche, along Griswold Creek. 457 Comment
  RSA133877  Holocarpha virgata subsp. virgata John H. Thomas 1959-9-19 8178 Tuolumne Low Sierra Nevada foothills. 1.7 miles east of Stanislaus-Tuolumne County line, along highway 120, between Knight's Ferry and Keystone. 122 Comment
  RSA262239  Holodiscus discolor John H. Thomas 1971-5-30 15982 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Comment
  CAS-BOT-BC150104  Holodiscus discolor var. discolor J. H. Thomas 1953-7-14 3422 Santa Cruz Summit Road, 1 mile SE of Saratoga Summit 853 Comment
  CAS-BOT-BC280837  Hordeum John H. Thomas 1963-5-11 10068 Santa Cruz Rancho del Oso, Waddell Creek. Field about 1.3 miles inland from the coast along road Comment
  JROH5220  Hordeum brachyantherum subsp. californicum John H. Thomas 1968-5-3 14439 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5224  Hordeum brachyantherum subsp. californicum John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5229  Hordeum brachyantherum subsp. californicum John Hunter Thomas 1981-4-27 20510 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC285181  Hordeum marinum subsp. gussoneanum J. H. Thomas 1954-5-26 4204 B Santa Cruz Northern end of Hilton Airport, between airstrip and highway 243 Comment
  CAS-BOT-BC285182  Hordeum marinum subsp. gussoneanum John H. Thomas 1950-5-28 1925 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip 243 Comment
  GH365225  Hordeum marinum subsp. gussoneanum J. H. Thomas 1961-5-21 9447 Unknown About 1.4 miles southwest of Altaville near road to Copperopolis. 381 Comment
  CAS-BOT-BC289481  Hordeum murinum subsp. leporinum J. H. Thomas 1953-5-2 3098 Santa Cruz Sunset Beach State Park 6 Comment
  CAS-BOT-BC289482  Hordeum murinum subsp. leporinum John H. Thomas 1953-5-31 3300 Santa Cruz Soda Lake area 91 Comment
  RSA181230  Hordeum murinum subsp. leporinum John H. Thomas 1963-5-20 10123 San Mateo Ano Nuevo Island, 1/2 mile off shore and about 20 miles NW of Santa Cruz. Comment
  CAS-BOT-BC271326  Hordeum vulgare J. H. Thomas 1959-1-18 7514 Santa Clara Near intersection of Stanford Ave. and Bowdoin Street, Stanford University Campus Comment
  CAS-BOT-BC536139  Horkelia californica J. H. Thomas 1954-6-11 4273 San Mateo 0.8 mile north of Pescadero Creek 60 Comment
  CAS-BOT-BC537329  Horkelia cuneata var. cuneata John H. Thomas 1957-4-27 6670 Los Angeles Pt. Dume, about 18 miles due W of Santa Monica, coastal bluffs 60 Comment
  VVC2433  Hulsea vestita subsp. vestita Tim Thomas, PJ MacKay 2003-7-14 2984 Inyo Southern High Sierra, Cottonwood Lakes Basin; midway btw GTC and Windy Gap. 3314 Comment
  VVC3240  Hulsea vestita subsp. vestita Tim Thomas, P. J. MacKay 1996-7-1 1787 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin. Windy Gap. 3345 Comment
  RSA138216  Hypericum perforatum John H. Thomas 1954-6-24 4315 Santa Cruz 0.3 miles east of Alba School, along Alba Grade. 457 Comment
  UC909470  Hypericum perforatum J. H. Thomas 1949-6-12 899 Humboldt ca. 1/2 mi. n. Orleans (near Klamath R.) Comment
  CAS-BOT-BC401230  Hypericum perforatum J. H. Thomas 1949-6-12 899 Humboldt Near Klamath River, about 1/2 mile north of town of Orleans Comment
  CAS-BOT-BC312893  Hypochaeris glabra John H. Thomas 1955-5-21 5177 Napa Near State Highway No. 128 and Capell Creek, about 12 miles east of St. Helena 274 Comment
  CAS-BOT-BC312900  Hypochaeris glabra John H. Thomas 1975-4-27 17810 A San Benito Pinnacles National Monument. Pinnacles Loop Trail 762 Comment
  CAS-BOT-BC319034  Hypochaeris glabra John H. Thomas 1953-5-23 3166 Santa Cruz Near summit of Santa Cruz - Los Gatos Highway (#17) 548 Comment
  JROH915  Hypochaeris glabra John H. Thomas 1967-5-10 12859 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA181328  Hypochaeris glabra John H. Thomas 1965-4-28 10596 Santa Clara Jasper Ridge Biological Experimental Area, about 5 miles SW of Palo Alto. Comment
Read comments
Jan 22 2014
  CAS-BOT-BC311508  Hypochaeris radicata J. H. Thomas 1950-5-6 1830 Santa Cruz Little Basin Comment
  JROH933  Hypochaeris radicata John Hunter Thomas 1981-10-25 20775 A San Mateo Jasper Ridge Biological Preserve, Stanford University; on causeway Comment
  RSA195582  Hypochaeris radicata John H. Thomas 1955-5-10 3133 Santa Cruz Northern end of Hilton Airport, between airstrip and highway. 244 Comment
  CAS-BOT-BC311504  Hypochaeris radicata John H. Thomas 1960-7-19 8823 Santa Clara Stanford University Campus. Near Branner Hall Comment
  RSA127080  Iris douglasiana John H. Thomas 1959-4-4 7656 San Mateo About 0.7 miles S. of Gazos Creek. About 6.5 miles southward from Pescadero. 46 Comment
  CAS-BOT-BC133656  Iris longipetala John H. Thomas 1955-4-6 4838 San Mateo East facing slope of San Bruno Mountain just north of South San Francisco 91 Comment
  JROH4436  Iris pseudacorus John Hunter Thomas 1990-6-7 24865 San Mateo Jasper Ridge Biological Preserve, Stanford University. Edge of lake at boat ramp near bridge over the 2 halves of Searsville Lake. Comment
  CAS-BOT-BC57662  Isoetes bolanderi H. A. Thomas; J. H. Thomas 1955-9-12 5475 Fresno Lowermost lake in Pioneer Basin. Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, 3169 Comment
  CAS-BOT-BC57666  Isoetes bolanderi John H. Thomas 1957-9-2 6862 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek 3139 Comment
  RSA133290B  Isoetes bolanderi John H. Thomas 1957-9-2 6862 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Alt 9000-12000. Vicinity of lowest Lake in Pioneer Basin. 3140 Comment
  CAS-BOT-BC61914  Isoetes nuttallii John H. Thomas 1958-3-1 7018 Santa Cruz Near Jamison Creek Road and Big Basin - Boulder Creek Highway 243 Comment
  JEPS21684  Isolepis cernua John H. Thomas 1955-7-17 5290 Monterey along the coast 1.6 mi s Dolan Creek; along the coast s of Dolan Creek 60 Comment
  CAS-BOT-BC324747  Iva axillaris J. H. Thomas 1959-8-27 8090 Santa Clara About 1 mile southeast of Oak Hill Cemetery along Highway No. 101, San Jose 30 Comment
  VVC3172  Ivesia campestris Tim Thomas, PJ MacKay 2003-7-16 3014 Inyo Southern High Sierra, Cottonwood Lakes Basin;along main trail blw jct Muir and South Fk Lks 3265 Comment
  CAS-BOT-BC142788  Ivesia lycopodioides subsp. megalopetala John H. Thomas 1962-9-10 9987 Fresno 4th Recess just west of Lower Snow Lake - Sierra Nevada, vicinity of Mono Pass, Pioneer Basin, and upper Mono Creek 3931 Comment
  RSA132839  Ivesia muirii John H. Thomas 1957-9-3 6907 Inyo Sierra Nevada; Mono Mesa, near the jct of Mono, Inyo, and Fresno Counties. 3659 Comment
Read comments
Jun 10 2012
  JROH2772  Juglans hindsii John Hunter Thomas 1978-7-14 19262 San Mateo Jasper Ridge Biological Preserve, Stanford University; to the west of the low flow crossing of San Francisquito Cr. Comment
  CAS-BOT-BC110009  Juncus J. H. Thomas 1950-4-15 1531 Santa Cruz Along Pajaro River, just inside of county line in southeast corner of county. 30 Comment
  JROH4452  Juncus bufonius var. bufonius John Hunter Thomas 1978-5-23 19225 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4493  Juncus occidentalis John Hunter Thomas 1987-5-19 24302 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4495  Juncus occidentalis John Hunter Thomas 1987-5-26 24314 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA133299  Juncus parryi John H. Thomas 1957-9-2 6877 Fresno Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Between lowest lake in Pioneer Basin and Mono Creek. 2744 Comment
  UC1133701  Juncus parryi W. D. Thomas 1935-9-12 481 Tuolumne 0.5 mi s Ireland Lake; Yosemite National Valley, Mt. Lyell Quad. 3413 Comment
  VVC3225  Juncus parryi Tim Thomas 1980-8-1 317 Inyo Southern High Sierra, Cottonwood Lakes Basin, below Lk 6. 3928 Comment
  JROH4502  Juncus patens John Hunter Thomas 1981-7-12 20687 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA153475  Juncus patens John H. Thomas 1953-7-28 3541 Santa Cruz Along Gazos Creek Road about 1/2 mile NW of Big Basin Redwoods State Park Ranger Station headquarters. 366 Comment
  RSA187539  Juncus phaeocephalus var. phaeocephalus John H. Thomas 1950-5-28 1922 Santa Cruz Hilton Airport. 244 Comment
  UCSB68052  Juncus xiphioides Thomas, Kathryn 1993-9-18 Santa Barbara southern foothills of the San Rafael Range; Sedgwick Reserve; downslope upper road northeast drainage Figueroa Creek 670 Comment
  CAS-BOT-BC81172  Juniperus occidentalis H. A. Thomas; J. H. Thomas 1954-9-15 4646 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek. 3657 Comment
  VVC2507  Juniperus occidentalis var. australis Tim Thomas, PJ MacKay 2007-8-12 4190 Inyo Southern Sierra Nevada, Cottonwood Lakes Basin; lower end in vic of road xing the ck. 3018 Comment
  CAS-BOT-BC235612  Keckiella breviflora J. H. Thomas 1964-5-23 10389 B Tuolumne Near O'Shaughnessy Dam, Hetch-Hetchy. Yosemite National Park 1219 Comment
  CHSC1856  Keckiella cordifolia E. Thomas 1940-5-26 Riverside Temecula Canyon. Comment
Read comments
Mar 27 2011
  VVC2602  Keckiella rothrockii Tim Thomas, Archie Meyer 2006-7-11 3905 Inyo Southern High Sierra, Cottonwood Lakes Basin; east slope of the Mesa. 3076 Comment
  RSA140618  Kickxia elatine John H. Thomas 1960-8-30 8870 Yolo 5 miles S of Winters along Hwy to Vacaville. Comment
  UCR218030  Kickxia elatine Tim Thomas 2010-7-17 5251 San Luis Obispo Morro Bay, 3.5 miles from coast, NW of Hollister Peak, vic. of San Luisito and Chorro Creek intersection 27 Comment
  RSA133697  Kickxia spuria John H. Thomas 1954-7-12 4382 Santa Clara Stanford University. Along Mayfield Ave. Comment
  SD49774  Kickxia spuria John H. Thomas 1954-7-12 4382 Santa Clara Stanfor University. Along Mayfield Ave. Comment
  JROH5267  Koeleria macrantha John H. Thomas 1967-5-12 12868 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA187379  Koeleria macrantha John H. Thomas 1950-5-13 1835 Santa Cruz About 1.2 miles SE of Saratoga Summit along Skyline Blvd. 823 Comment
  CAS-BOT-BC273770  Koeleria pyramidata J. H. Thomas 1950-5-14 1885 Santa Cruz Ben Lomond Sand Hills, near summit of Quail Hollow Road on Ben Lomond side 152 Comment
  VVC2985  Krascheninnikovia lanata Tim Thomas, G Rink, A Schuab 2014-3-24 6184 San Bernardino Mojave Desert, Johnson Valley; limestone hills just west of Galway Dry Lk. 870 Comment
  JEPS24648  Lactuca saligna John H. Thomas 1960-9-3 8874 Santa Clara at intersection of Embarcadero and Bayshore Highway; Palo Alto 0 Comment
  CAS-BOT-BC340481  Lactuca saligna John H. Thomas 1958-8-16 7426 Santa Clara Stanford University Campus. Front of Encina Hall Comment
  CAS-BOT-BC340609  Lactuca serriola J. H. Thomas 1954-5-26 4212 Santa Cruz Northern end of Hilton Airport, between airstrip and highway 243 Comment
  CAS-BOT-BC340653  Lactuca serriola John H. Thomas 1955-8-1 5303 Santa Clara Along Alviso Slough, near South Bay Yacht Club Comment
  RSA135759  Lactuca serriola John H. Thomas 1954-8-12 4575 Santa Clara Summit Los Gatos - Santa Cruz Hwy, State Hwy 17, near county line. 610 Comment
  CAS-BOT-BC273824  Lamarckia aurea John H. Thomas 1957-4-27 6696 Los Angeles Santa Monica Mountains. Coastal hills, west side of mouth of Latigo Canyon, about 3 miles northwest of Pt. Dume. 15 miles due west of Santa Monica 152 Comment
  CAS-BOT-BC273907  Lamarckia aurea John H. Thomas 1961-3-22 9019 Santa Clara At Edenvale, about 5 miles south-east of San Jose 91 Comment
  RSA649912  Larrea tridentata Kathrine Thomas, Jon Zander 1988-5-6 101 San Bernardino 3.5 miles NE of Kramer Junction (Hwys. 395 an 58 junction). On Fish and Game Land. NE corner of plot. Comment
  CAS-BOT-BC334548  Lasthenia californica J. H. Thomas 1958-4-18 7107 San Francisco Corona Heights, San Fransicso 152 Comment
  CAS-BOT-BC337923  Lasthenia californica Hazelle Ann Thomas; John H. Thomas 1956-4-2 5581 El Dorado Between Placerville and Shingle Springs along U. S. Highway No. 50, 2.2 miles east of Shingle Springs as measured along the highway 457 Comment
  CAS-BOT-BC346319  Lasthenia californica J. H. Thomas 1951-1-28 2527 Santa Cruz NOrthern end of Hilton Airport between airstrip and Big Basin--Boulder Creek Highway 243 Comment
  CAS-BOT-BC346778  Lasthenia californica John H. Thomas 1956-4-29 5566 Santa Clara Santa Cruz Mountains; near Guadalupe Creek abvoe resevoir. About 6.5 miles southeast of Los Gatos. 396 Comment
  CAS-BOT-BC324422  Lasthenia californica subsp. macrantha J. H. Thomas 1949-6-4 582 San Mateo Along coast, 1.4 miles south of road from coast to Pescadero Comment
  RSA131837  Lasthenia glabrata subsp. glabrata John H. Thomas 1954-4-2 3792 San Mateo 1.5 miles E of center of Redwood City. 0 Comment
  CAS-BOT-BC355539  Lasthenia glabrata var. glabrata John H. Thomas 1956-4-8 5629 San Mateo Near Bayshore Highway about 2 miles east of Redwood City Comment
  JROH2028  Lathyrus latifolius John H. Thomas 1962-7-15 9924 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek below dam Comment
  CHSC856  Lathyrus vestitus E. Thomas 1940-4-6 Los Angeles Spreading grounds for San Antonio river. Comment
  UCSB68214  Lathyrus vestitus Kathryn Thomas, Lydia Emard, Chris Walden 1993-3-22 SR- 76 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Upper ranch Fork B of Figueroa Creek 548 Comment
  UCSB68216  Lathyrus vestitus Kathryn Thomas, Lydia Emard, Chris Walden 1993-3-22 SR- 76 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Upper ranch Fork B of Figueroa Creek 548 Comment
  JROH2033  Lathyrus vestitus var. vestitus John Hunter Thomas 1978-4-20 19083 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2035  Lathyrus vestitus var. vestitus John Hunter Thomas 1983-4-14 21404 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  CAS-BOT-BC327262  Layia hieracioides J. H. Thomas 1951-4-1 2571 Monterey 15.4 miles SE of Jamesburg turnoff on road to Greenfield (as measured along road). Comment
  CAS-BOT-BC327469  Layia hieracioides John H. Thomas 1953-5-2 3085 San Mateo Sunset Beach State Park, near USG&GS Markers: Park 1931 and Park 2-1931. 15 Comment
  CAS-BOT-BC327504  Layia hieracioides J. H. Thomas 1958-6-11 7223 San Mateo About 4.3 miles due E of Belmont near Crystal Springs Reservoir. 91 Comment
  CAS-BOT-BC379573  Layia platyglossa J. H. Thomas 1954-5-7 4096 Santa Cruz On top of ridge between Scott and Mill Creek drianges, about 2.2 miles S - SW of Eagle Rock. 518 Comment
  CAS-BOT-BC379575  Layia platyglossa J. H. Thomas 1953-5-2 3079 Santa Cruz Sunset Beach State Park, near USG&GS Markers: Park 1931 and Park 2 - 1931. 15 Comment
  CAS-BOT-BC379580  Layia platyglossa John H. Thomas 1953-5-10 1905 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip. 243 Comment
  JEPS21666  Layia platyglossa John H. Thomas 1953-5-10 3122 Santa Cruz n area of Hilton Airport 243 Comment
  CAS-BOT-BC379510  Layia platyglossa J. H. Thomas 1949-4-9 255 Monterey Near Hopkins Marine Sation. Pacific Grove. Comment
  CAS-BOT-BC382092  Layia platyglossa John H. Thomas 1969-4-24 14910 San Mateo Near Canada College, Redwood City, near Farm Hill Drive Comment
  JROH4535  Lemna minor John Hunter Thomas 1978-7-2 19252 San Mateo Jasper Ridge Biological Preserve, Stanford University; on dam Comment
  JROH4533  Lemna minor John H. Thomas 1970-4-4 15539 San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake at dam Comment
  CAS-BOT-BC221579  Lepechinia calycina John H. Thomas 1956-5-2 5711 Santa Clara Stevens Creek Reservoir. About 6.5 miles south of Mountain View 152 Comment
  JROH2792  Lepechinia calycina John H. Thomas 1973-5-5 16769 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC89130  Lepidium didymum J. H. Thomas 1958-8-1 7370 San Mateo About 0.5 mile north of mouth of Pescadero Creek. 0 Comment
  CAS-BOT-BC89145  Lepidium didymum John H. Thomas 1963-5-11 10074 Santa Cruz Rancho del Oso, Waddell Creek. Along road, about 1 mile inland from the coast. Comment
  RSA176591  Lepidium didymum John H. Thomas 1961-5-6 9232 Santa Cruz Rancho del Oso. At the mouth of Waddell Creek. 8 Comment
  CAS-BOT-BC89066  Lepidium didymum John H. Thomas 1958-8-16 7438 Santa Clara Stanford University Campus. In front of Encina Hall. Comment
  CAS-BOT-BC89121  Lepidium didymum J. H. Thomas 1961-6-22 9561 San Francisco San Francisco. In the vicinity of Washington and Sansome Streets. Comment
  CAS-BOT-BC89193  Lepidium draba John H. Thomas 1959-3-19 7532 San Benito About 10 miles northwest of Hollister. 60 Comment
  CAS-BOT-BC89218  Lepidium draba J. H. Thomas 1956-4-27 4920 San Mateo Along Bayshore Highway, east of San Carlos. Comment
  CAS-BOT-BC89235  Lepidium draba John H. Thomas 1959-8-27 8122 Santa Cruz Along the levee of the Pajaro River at Watsonville. Comment
  CAS-BOT-BC89226  Lepidium draba J. H. Thomas 1960-3-27 8559 Santa Clara Stanford University Campus. Near Sequoia Hall. Comment
  CAS-BOT-BC89228  Lepidium draba J. H. Thomas 1964-4-5 10297 Santa Clara Stanford University Campus. Along Stanford Avenue near Cornell Street. Comment
  RSA651745  Lepidium fremontii Katherine Thomas 1988-3-9 7 San Bernardino 3.5 miles NE of Kramer Junction (Hwys. 395 and 58 junction). On Fish and Game land. Comment
  CAS-BOT-BC12492  Lepidium nitidum John H. Thomas 1970-4-15 15550 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River. Comment
  CAS-BOT-BC12622  Lepidium nitidum Hazelle A. Thomas; John H. Thomas 1955-4-2 4792 Santa Clara Near intersection of Story Road and Bayshore Highway, near San Jose Airport, about 3 miles from center of San Jose. 15 Comment
  CAS-BOT-BC12626  Lepidium nitidum John H. Thomas 1974-5-4 17277 Santa Clara Mount Hamilton Range. About 1 mile due W of Mount Hamilton Observatory and about 12.5 miles E of the center of San Jose. 914 Comment
  CAS-BOT-BC12640  Lepidium nitidum J. H. Thomas 1950-4-9 1484 Santa Cruz Along cliff near corner of Cliff Drive and David Walk neaer ocean. Santa Cruz. 12 Comment
  JROH1552  Lepidium nitidum John Hunter Thomas 1983-2-21 21283 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SD49784  Lepidium oxycarpum John H. Thomas 1959-3-19 7531 San Benito Ca. 10 miles northwest of Hollister. 60 Comment
  CAS-BOT-BC12946  Lepidium strictum John H. Thomas 1966-4-12 11556 San Mateo East Palo Alto. Along sidewalks near Woodland Avenue and University Avenue. Comment
  CDA23619  Leptochloa uninervia A. Thomas, Mark A. Elvin 2006-9-23 609233 Orange Southern Coastal; San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; southwest edge, along San Diego Creek, north of University Drive, east of Highway 73. Comment
  JROH3176  Leptosiphon androsaceus John Hunter Thomas 1986-5-17 24055 San Mateo Jasper Ridge Biological Preserve, Stanford University; creek trail downstream from Rattlesnake Rock Comment
  CHSC1273  Leptosiphon parviflorus E. Thomas 1940-5-26 San Diego Sentenac Canyon near Julian. Comment
  JROH3188  Leptosiphon parviflorus John H. Thomas 1955-5-6 5003 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3194  Leptosiphon parviflorus John Hunter Thomas 1990-4-19 24810 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville end of large open grassland Comment
  JROH1007  Lessingia glandulifera var. glandulifera John H. Thomas 1961-6-7 9532 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1023  Lessingia glandulifera var. glandulifera John Hunter Thomas 1983-7-7 22823 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1025  Lessingia glandulifera var. glandulifera John Hunter Thomas 1986-6-9 24095 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA210924  Lessingia hololeuca John H. Thomas 1969-10-19 15479 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  RSA176749  Lessingia tenuis John H. Thomas 1963-5-15 10091 San Mateo Jasper Ridge Biological Experimental Area. 5 miles SW of Palo Alto Comment
  CAS-BOT-BC342075  Leucanthemum maximum John H. Thomas 1963-8-11 10242 Santa Cruz Waddell Creek, about 2.3 miles up from the coast near abandoned cabins Comment
  RSA176665  Leucanthemum maximum John H. Thomas 1961-7-2 9589 Santa Clara Palo Alto, San Mateo, Santa Clara County line along San Francisquito Creek between University Ave and Newell Road. alt near sea level 0 Comment
  CAS-BOT-BC233810  Lewisia J. H. Thomas 1961-7-30 9636 Tuolumne Area to the east of Tioga Pass, Yosemite National Park 3200 Comment
  CAS-BOT-BC451680  Lilaea scilloides J. H. Thomas 1959-4-5 7662 Santa Clara Stanford University Campus. Near intersection of Stanford Ave. and El Camino. 15 Comment
  JROH4688  Lilium pardalinum subsp. pardalinum John Hunter Thomas 1985-4-22 23541 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4057  Limosella acaulis John Hunter Thomas 1981-7-12 20709 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC1605  Linanthus nuttallii Tim Thomas, Archie Meyer 2006-8-10 4019 Mono White Mountains, Just west of the UC Crooked Creek Research Station, Archies study plot site. 3149 Comment
  PGM511  Linaria vulgaris John H. Thomas 1967-4-9 Monterey Salinas Valley, Gonzales, 0.5 mi N along Highway 101 alternate Comment
  CAS-BOT-BC36049  Lithocarpus densiflorus var. densiflorus J. H. Thomas 1950-9-30 2431 Santa Cruz Near summit of Opal Creek Road, Big Basin Redwood State Park 518 Comment
  CAS-BOT-BC432287  Lithophragma affine J. H. Thomas 1954-4-30 4045 Santa Cruz N end of Hilton Airport, between airstrip and highway 243 Comment
  CAS-BOT-BC430584  Lithophragma affine John H. Thomas 1949-4-18 303 A San Luis Obispo Graves Creek Bridge near Palo Robles Comment
  JROH3891  Lithophragma affine John Hunter Thomas 1983-4-5 21318 San Mateo Jasper Ridge Biological Preserve, Stanford University; below rattlesnake rock Comment
  RSA159426  Lithophragma heterophyllum John H. Thomas 1961-5-14 9361 San Mateo Vicinity of Pilarcitos Stone Dam on Pilarcitos Creek. San Francisco Watershed Reserve. 152 Comment
  CAS-BOT-BC435669  Lithophragma heterophyllum J. H. Thomas 1950-5-6 1794 Santa Cruz Near Bridge 36-08 between Hilton Airport and town of Boulder Creek. North side of Boulder Creek on grassy open area. Comment
  CAS-BOT-BC60186  Lobularia maritima J. H. Thomas 1956-9-29 5456 Los Angeles Pasadena. Behind Devils Gate Dam. Comment
  CAS-BOT-BC342267  Logfia filaginoides John H. Thomas 1978-4-23 19117 San Benito Pinnacles National Monument. High Peaks, Condor Gulch, Bear Gulch trail loop 762 Comment
  CAS-BOT-BC342469  Logfia gallica J. H. Thomas 1954-5-28 4234 San Mateo East facing slope of San Bruno Mountain, just north of South San Francisco 91 Comment
  JROH740  Logfia gallica John Hunter Thomas 1981-5-8 20552 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC283258  Lolium multiflorum Hazelle A. Thomas; John H. Thomas 1955-4-2 4791 Santa Clara Pasture near intersection of Story Rd and Bayshore Highway, near San Jose Airport, about 3 miles from center of San Jose Comment
  CAS-BOT-BC283276  Lolium multiflorum John H. Thomas 1950-6-10 1974 Santa Cruz Pajaro River at Watsonville Bridge Comment
  CAS-BOT-BC269139  Lolium perenne J. H. Thomas 1954-5-26 4204 A Santa Cruz Northern end of Hilton Airport, between airstrip and highway 243 Comment
  CAS-BOT-BC269141  Lolium perenne J. H. Thomas 1949-10-23 1179 Santa Cruz Along coast at western end of Cliff Drive, Santa Cruz Comment
  CAS-BOT-BC269142  Lolium perenne J. H. Thomas 1953-7-29 3573 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip 243 Comment
  RSA136072  Lolium perenne subsp. multiflorum John H. Thomas 1956-5-19 5729 Santa Clara Stanford University Campus, Along Escondido Ave. 15 Comment
  CAS-BOT-BC269180  Lolium temulentum John H. Thomas 1955-5-5 4960 Santa Clara Hills near Oak Hill Memorial Cemetery, 3 miles southeast of the center of San Jose 91 Comment
  JROH263  Lomatium dasycarpum subsp. dasycarpum John H. Thomas 1973-4-20 16582 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2086  Lomatium dissectum var. multifidum Tim Thomas, P. J. MacKay 2011-6-18 5442 San Bernardino San Bernardino Mtns, On the west side of FS2N33 xing Grass Valley Ck 1460 Comment
  JROH275  Lomatium macrocarpum John H. Thomas 1963-3-20 10026 San Mateo Jasper Ridge Biological Preserve, Stanford University; serpentine area on north side of ridge near Westridge end Comment
  UC1125227  Lonicera conjugialis W. D. Thomas 1935-7-2 150 Alpine w Ebbett's Pass; Stanislaus National Forest, Markleeville Quadrangle Comment
  CAS-BOT-BC240629  Lonicera hispidula J. H. Thomas 1954-6-24 4321 Santa Cruz Near intersection of Empire Grade and Jamison Road 609 Comment
  JROH1652  Lonicera hispidula John H. Thomas 1970-7-5 15664 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68199  Lonicera involucrata Thomas, Kathryn 1994-6-25 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, stream banks below the Pistol Club 490 Comment
  CAS-BOT-BC241553  Lonicera involucrata var. ledebourii John H. Thomas 1958-7-15 7342 San Francisco San Francisco. West slope of Mt. Sutro 182 Comment
  RSA181234  Lonicera involucrata var. ledebourii John H. Thomas 1964-6-19 10429 San Mateo 0.9 miles S of Tunitas Creek near Coast Hwy, 61 Comment
  CAS-BOT-BC198533  Lotus John H. Thomas 1957-4-6 6607 San Bernardino 1.4 miles n orth of Yucca Valley on road to Lucerne Valley, about 19 miles west of town of Twentynine Palms, Mojave Desert 914 Comment
  CAS-BOT-BC198586  Lotus John H. Thomas 1975-4-27 17811 San Benito Pinnacles Loop Trail, Pinnacles National Monument 762 Comment
  CAS-BOT-BC200979  Lotus John H. Thomas 1960-5-21 8729 Tuolumne Near Buck Meadow along highway 120 on Big Oak Flat Road to Yosemite 914 Comment
  UC1236500  Lotus corniculatus John H. Thomas 1955-8-1 5321 Santa Clara Alviso Comment
  UCD106732  Lotus corniculatus John H. Thomas 1958-6-13 7242 Santa Clara Near North Gate at Moffett Field near Mountain View. Comment
  UC1236517  Lotus crassifolius var. crassifolius John H. Thomas 1956-5-2 5698 Santa Clara about 5 mi s Los Altos; Monte Bello Ridge 792 Comment
  RSA131354  Lotus formosissimus John H. Thomas 1950-4-23 1670 Santa Cruz Bog at Camp Evers. 152 Comment
  VVC2850  Lotus micranthus Tim Thomas, George Ross II & III 2014-4-23 6268 San Luis Obispo South Coast Range, Irish Hills, 0.2 miles below Glenrose Spring along Coon Ck. 277 Comment
  UC1244701  Lotus purshianus var. purshianus John H. Thomas 1959-8-27 8117 Santa Cruz about 3.5 mi ne Watsonville (just sw of Santa Cruz County Fair Grounds, along Hecker Highway) 30 Comment
  RSA131378  Lotus scoparius var. scoparius John H. Thomas 1953-7-14 3445 Santa Cruz About 1.5 miles south of Bielawski Lookout as measured by the road. 701 Comment
  UC1236513  Lotus stipularis var. stipularis J. H. Thomas 1954-4-30 4019 Santa Cruz about 2.3 mi ssw Eagle Rock (w side of Mill Creek drainage); Mill Creek 457 Comment
  VVC1950  Lotus strigosus Tim Thomas, PJ MacKay 2001-5-5 2515 San Bernardino San Bernardino Mtns, vic. Rock Springs below Juniper Flats 1189 Comment
  VVC2923  Lotus strigosus Tim Thomas, P. J. MacKay 2010-4-13 5078 San Bernardino San Bernardino Mtns., Whitewater River; Catclaw Flats 1104 Comment
  RSA132398  Lotus strigosus var. strigosus John H. Thomas 1953-3-23 2887 Santa Cruz About 1 miles north of Highway 17, along Glenwood Highway. 152 Comment
  CAS-BOT-BC60239  Lunaria annua John H. Thomas 1960-4-12 8579 Santa Cruz Near summit of Hillside Drive, Ben Lomond. 182 Comment
  CAS-BOT-BC201268  Lupinus John H. Thomas 1949-4-20 328 San Diego Entrance to Borrego Valley from Banner Canyon, about 3 miles east of Banner Comment
  CAS-BOT-BC201259  Lupinus John H. Thomas 1979-4-30 19518 San Benito Pinnacles National Monument. Visitors' Center to intersection of Rim Trail and High Peaks Trail via Bear Gulch Reservoir Comment
  CAS-BOT-BC195931  Lupinus albifrons var. albifrons J. H. Thomas 1950-4-23 1659 Santa Cruz Ben Lomond Sand Hills, along Quail Hollow Road 152 Comment
  CAS-BOT-BC195937  Lupinus albifrons var. albifrons J. H. Thomas 1955-3-21 4708 Santa Cruz About 5 miles below Saratoga Summit as measured along Calif. State Highway #9 457 Comment
  CAS-BOT-BC196105  Lupinus albifrons var. collinus John H. Thomas 1955-4-6 4883 San Francisco North peak, Twin Peaks 274 Comment
  JROH2116  Lupinus bicolor John H. Thomas 1977-4-8 18518 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2118  Lupinus bicolor John Hunter Thomas 1984-4-2 23273 3 H San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge fence Comment
  CAS-BOT-BC196651  Lupinus breweri var. breweri John H. Thomas 1963-7-24 10207 Mariposa About 1 mile along Forsythe Trail south of Tenaya Lake 2438 Comment
  RSA195677  Lupinus densiflorus var. palustris John H. Thomas 1953-5-30 3261 Santa Cruz Along Southern Pacific RR tracks 91 Comment
  CLARK-A346-5  Lupinus horizontalis Loraine Thomas Kern Bakersfield State Highway, Bakersfield area; Gosford 7.5'Q Comment
  VVC2760  Lupinus latifolius Tim Thomas 2008-7-25 4542 Inyo Southern Sierra Nevada Mtns., Along Cottonwood Creek below vicinity of road crossing the creek and above confluence with Horseshoe Mdw fork. Near the old pack station. 2896 Comment
  JROH5865  Lupinus nanus John H. Thomas 1975-4-5 17716 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA651741  Lupinus odoratus var. odoratus Katherine Thomas, Jon Zander 1988-5-6 110 San Bernardino 3.5 miles NE of Kramer Junction (Hwys. 395 an 58 junction). On Fish and Game Land. NE corner of plot. Comment
  CHSC911  Lupinus sparsiflorus E. Thomas 1940-4-13 Los Angeles Claremont. 353 Comment
  VVC1945  Lupinus sparsiflorus Tim Thomas, PJ MacKay 2001-5-5 2508 San Bernardino San Bernardino Mtns, vic. Rock Springs below Juniper Flats 1189 Comment
  JROH4526  Luzula comosa var. comosa John H. Thomas 1973-3-12 16494 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4529  Luzula comosa var. comosa John Hunter Thomas 1982-3-12 20805 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1133763  Luzula divaricata W. D. Thomas 1935-9-15 493 Mariposa near Emeric Lake; Mt. Lyell Quad., near Emeric Lake Comment
  CAS-BOT-BC441287  Luzula macrantha John H. Thomas 1953-3-23 2875 Santa Cruz Saint Mary of the Palms, summer girls' camp near Glenwood 304 Comment
  CAS-BOT-BC231966  Luzula orestera H. A. Thomas; J. H. Thomas 1955-9-8 5389 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Near lowest lake in 4th Recess 3048 Comment
  CAS-BOT-BC441370  Luzula subsessilis John H. Thomas 1965-4-29 10611 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  RSA132437  Lycium barbarum John H. Thomas 1955-4-2 4750 Santa Clara Along Alviso Slough, near South Bay Yacht Club, Alviso. 0 Comment
  CAS-BOT-BC237787  Lycium pallidum var. oligospermum J. H. Thomas; H. A. Thomas 1954-3-24 473 Inyo About 10 miles north and east of Trona, Mojave Desert 731 Comment
  JROH3363  Lysimachia arvensis John H. Thomas 1967-5-12 12883 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2952  Lythrum hyssopifolia John Hunter Thomas 1981-7-12 20688 San Mateo Jasper Ridge Biological Preserve, Stanford University; near boat dock Comment
  RSA0011334  Lythrum hyssopifolia John H. Thomas 1954-5-28 4242 San Mateo East facing slope of San Bruno Mountain, just north of South San Francisco. 30 Comment
  UC1190031  Lythrum hyssopifolia J. H. Thomas 1954-5-28 4242 San Mateo just n of South San Francisco (San Bruno Mountain); San Bruno Mountain 30 Comment
  CAS-BOT-BC342607  Madia John H. Thomas 1969-9-20 15469 Sonoma About 2 miles north along highway no. 1 from Russian Gulch 304 Comment
  RSA137297  Madia capitata John H. Thomas 1953-7-14 3463 Santa Cruz Northern end of Hilton Airport between highway and airstrip 244 Comment
  CAS-BOT-BC334767  Madia elegans H. A. Thomas; J. H. Thomas 1955-7-17 5264 Monterey Vicinity of Nacimiento Summit, Santa Lucia Mountains 914 Comment
  CAS-BOT-BC343948  Madia elegans John H. Thomas 1950-11-12 2491 Santa Cruz Soquel - San Jose Road at Terrace Grove Ranch, near Hester School 419 Comment
  JROH1052  Madia exigua John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA124756  Madia exigua John H. Thomas 1958-5-10 7141 San Mateo Jasper Ridge. About 5 miles SW of Palo Alto. 152 Comment
  CAS-BOT-BC342972  Madia gracilis John H. Thomas 1961-5-21 9435 Calaveras Vallecito 533 Comment
  JROH1073  Madia gracilis John H. Thomas 1972-5-5 16080 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1083  Madia gracilis John Hunter Thomas 1983-7-7 22820 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1093  Madia gracilis John Hunter Thomas 1988-5-25 24488 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  JROH1095  Madia gracilis John Hunter Thomas 1992-5-5 25215 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam and vicinity Comment
  RSA137344  Madia gracilis John H. Thomas 1953-6-13 3325 Santa Cruz Mt. Charley Road, about 0.4 miles west of summit of Santa Cruz-Los Gatos Highway. 595 Comment
  RSA137293  Madia madioides John H. Thomas 1950-5-13 1856 Santa Cruz About 3.1 miles down Bear Creek Road from its summit. 457 Comment
  CAS-BOT-BC345140  Madia sativa John H. Thomas 1961-8-27 9695 San Mateo Colma. Open sandy field near intersection of El Camino Real and F Street 45 Comment
  JEPS21664  Madia sativa J. H. Thomas 1954-8-12 4566 Santa Cruz 4 mi n Santa Cruz (near railroad tracks at Rincon); Rincon 60 Comment
  JROH1100  Madia sativa John H. Thomas 1971-8-7 16020 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA176607  Madia sativa John H. Thomas 1961-8-27 9695 San Mateo Colma; open sandy field near intersection of El Camino Real and F Street 46 Comment
  JROH1113  Madia sativa John Hunter Thomas 1988-6-6 24511 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Lakeside Laboratory Comment
  CAS-BOT-BC511332  Maianthemum dilatatum John H. Thomas 1961-5-7 9288 San Mateo San Bruno Mountain in northern part of county 396 Comment
  JROH4698  Maianthemum racemosum John Hunter Thomas 1985-4-22 23544 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4696  Maianthemum racemosum John H. Thomas 1979-4-8 19443 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC511374  Maianthemum racemosum subsp. amplexicaule John Hunter Thomas 1954-3-5 3746 Santa Cruz Two miles west of intersection of Alba Road and State Highway 9, along Alba Road, about 100 yards east along road from Alba School 457 Comment
  JROH4711  Maianthemum stellatum John Hunter Thomas 1978-4-28 19160 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC514157  Maianthemum stellatum J. H. Thomas 1949-4-14 272 San Mateo King's Mountain Comment
  UCR240519  Malacothamnus fremontii Tim Thomas 2008-9-14 4576 Inyo Sierra Nevada Mountains, Onion Valley Road just above Grays Meadow 2178 Comment
  CAS-BOT-BC324546  Malacothrix John H. Thomas 1967-4-10 12608 Fresno Jacalitos Hills, eastern margin of the Inner Coast Range between Warthan and Jacalitos Creeks about 2-5 miles southward from Coalinga 304 Comment
  CAS-BOT-BC347574  Malacothrix floccifera J. H. Thomas 1962-7-18 9933 Santa Cruz Quail Hollow Road, Ben Lomond Sand Hills east of Felton 91 Comment
  CAS-BOT-BC347578  Malacothrix floccifera John H. Thomas 1956-7-2 6031 Santa Cruz Ben Lomond Sand Hills 304 Comment
  RSA124778  Malacothrix floccifera John H. Thomas 1950-4-23 1658 Santa Cruz Ben Lomond Sand Hills, along Quail Hollow Road. 152 Comment
  RSA187240  Malva nicaeensis John H. Thomas 1954-4-23 3990 Santa Clara Along Los Gatos Reservoir about 3-1/2 miles south of Los Gatos in vicinity of Alma. 213 Comment
  RSA134110  Marah fabacea John H. Thomas 1953-5-2 3070 Santa Cruz Sunset Beach State Park. Comment
  RSA133968  Marah horrida John H. Thomas 1959-3-25 7639 Kern Kern River Canyon between Bodfish and Miracle Hot Springs. 762 Comment
  CAS-BOT-BC71077  Marsilea vestita John H. Thomas 1970-4-15 15559 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River Comment
  CAS-BOT-BC348083  Matricaria discoidea J. H. Thomas 1965-5-22 10661 Tuolumne Near dam at Hetch-Hetchy Reservoir Comment
  CAS-BOT-BC348191  Matricaria discoidea John H. Thomas 1960-6-25 8791 A San Mateo Redwood City. Along or near a small creek running into Redwood Slough between El Camino Real and railroad tracks, near Maple Street 7 Comment
  RSA134105  Meconella californica John H. Thomas 1953-3-24 2917 Santa Cruz Grassy meadow on northern side of Boulder Creek near intersection of Jamison Road and Big Basin - Boulder Creek Highway, about 2.5 miles northwest of town of Boulder Creek. 274 Comment
  JROH2154  Medicago arabica John Hunter Thomas 1990-5-8 24853 San Mateo Jasper Ridge Biological Preserve, Stanford University; low-flow crossing Comment
  RSA60503  Medicago lupulina John H. Thomas 1949-6-16 942 A Siskiyou Beaver Creek Public Camp, 5 miles north of junction of Beaver Creek and Klamath River. Klamath National Forest. Comment
  JROH2166  Medicago polymorpha John H. Thomas 1973-3-12 16481 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2168  Medicago polymorpha John H. Thomas 1974-4-19 17161 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA187217  Medicago sativa John H. Thomas 1950-9-24 2423 Santa Cruz 2.5 m iles from Palm Beach on road to watsonville. Comment
  CAS-BOT-BC280933  Melica imperfecta John H. Thomas 1960-5-1 8641 Santa Clara Montalvo, near Saratoga 152 Comment
  JROH5307  Melica imperfecta John Hunter Thomas 1984-4-12 23296 San Mateo Jasper Ridge Biological Preserve, Stanford University. Path below dam in oak woodland. Comment
  RSA129337  Melica stricta W. D. Thomas 1935-7-2 139 Alpine 1.25 miles N of Ebbet Pass 2409 Comment
  VVC2139  Melica stricta Tim Thomas, P. J. MacKay 2012-6-8 5659 San Bernardino San Bernardino Mtns, Along FS 1N05 0.9 road miles from Coon Ck Jct. 2189 Comment
  CAS-BOT-BC262544  Melica torreyana John H. Thomas 1953-5-10 3110 Santa Cruz About 1 mile toward Saratoga Summit from intersection of State Highway 9 and Big Basin Road 457 Comment
  CAS-BOT-BC264228  Melica torreyana John H. Thomas 1982-6-27 21042 San Benito Visitors' Center to Reservoir, Pinnacles National Monument Comment
  CAS-BOT-BC264246  Melica torreyana John H. Thomas 1965-4-29 10620 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CDA23577  Melilotus albus A. Thomas, Mark A. Elvin 2006-9-23 609236 Orange Southern Coastal; San Joaquin Marsh Freshwater Marsh, UC Natural Reserve; southwest edge, along San Diego Creek, north of University Drive, east of Highway 73. Comment
  JROH2806  Mentha pulegium John H. Thomas 1959-8-22 8079 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2808  Mentha pulegium John H. Thomas 1974-10-26 17627 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2811  Mentha pulegium John H. Thomas 1978-9-24 19338 San Mateo Jasper Ridge Biological Preserve, Stanford University; along Searsville Lake Comment
  RSA135752  Mentha spicata John H. Thomas 1957-8-30 6847 Santa Clara Stanford University Campus; SE corner of Lake Lagunita. 23 Comment
  CAS-BOT-BC223708  Mentzelia John H. Thomas 1957-3-30 6551 Riverside 8.1 miles east of Cactus City, about 20 miles east of Coachella. Colorado Desert 426 Comment
  VVC2998  Mentzelia involucrata Tim Thomas, G Rink, A Schuab 2014-3-24 6180 A San Bernardino Mojave Desert, Johnson Valley; limestone hills just west of Galway Dry Lk. 870 Comment
  UCR209068  Mentzelia montana Tim Thomas, P. J. MacKay 2004-5-8 3334 San Bernardino San Bernardino Mountains, above [south of] Cactus Flat, west of Hwy 18 1991 Comment
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May 5 2012
  VVC1995  Mentzelia montana Tim Thomas, PJ MacKay 2004-5-8 3334 San Bernardino San Bernardino Mtns, Abv Cactus Flats, west of Hwy 18 1991 Comment
  VVC2999  Mentzelia obscura Tim Thomas, P. J. MacKay 2014-4-3 6245 San Bernardino Mojave Desert, Northern Johnson Valley, 1.6 miles NW of Bessemer Mine, wash btw Iron and Rodman Mtns. 1034 Comment
  VVC3000  Mentzelia obscura Tim Thomas, G Rink, A Schuab 2014-3-25 6230 San Bernardino Mojave Desert, Johnson Valley; north slope mountain 3.5 miles West of Galway Dry Lk. 979 Comment
  CAS-BOT-BC167641  Mentzelia veatchiana John H. Thomas 1957-4-6 6631 San Bernardino Mojave Desert. 1.4 miles north of Yucca Valley on road to Lucerne Valley. About 19 miles west of town of Twentynine Palms 914 Comment
  CAS-BOT-BC428617  Micranthes bryophora H. A. Thomas; J. H. Thomas 1955-9-13 5481 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Alt. 9,000 - 12,900 feet. Between lowest and 2nd groups of lakes in 4th Recess. Alt. 10000 to 10800 ft. 3931 Comment
  CAS-BOT-BC428947  Micranthes californica J. H. Thomas 1965-4-20 10578 Santa Cruz Near Lime Kilns [Limekiln] along Fall Creek, about 1 1/2 miles west of Felton. Comment
  CAS-BOT-BC432873  Micranthes tolmiei H. A. Thomas; J. H. Thomas 1955-9-10 5455 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Alt. 9,000 and 12,900 feet. Along shore of Golden Lake. Altitude about 11000 feet. 3931 Comment
  CAS-BOT-BC432880  Micranthes tolmiei John H. Thomas 1957-9-3 6921 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo, and Fresno Counties. 3718 Comment
  CAS-BOT-BC322592  Micropus John H. Thomas 1978-4-23 19112 San Benito High Peaks, Condor Gulch, Bear Gulch Trail loop, Pinnacles National Monument 762 Comment
  RSA176742  Micropus californicus John H. Thomas 1963-5-12 10086 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto Comment
  CAS-BOT-BC348341  Micropus californicus John H. Thomas 1973-4-23 16621 San Benito Pinnacles National Monument. Rim Trail from Bear Gulch Reservoir to High Peaks Trail 502 Comment
  CAS-BOT-BC348541  Micropus californicus var. californicus John H. Thomas 1955-5-21 5145 Napa Sarco Creek drainage, near State Highway No. 37, about 6 miles from Napa 274 Comment
  CAS-BOT-BC348542  Micropus californicus var. californicus John H. Thomas 1955-5-21 5166 Napa Near State Highway No. 128 and Capell Creek, about 12 miles east of St. Helena 274 Comment
  CAS-BOT-BC348644  Micropus californicus var. californicus J. H. Thomas 1965-5-22 10662 Tuolumne Near dam at Hetch-Hetchy Reservoir Comment
  CAS-BOT-BC348728  Microseris bigelovii J. H. Thomas 1953-5-31 3272 Santa Cruz Sunset Beach State Park 6 Comment
  RSA133909  Microseris bigelovii John H. Thomas 1954-5-7 4094 Santa Cruz On top of ridge between Scott and Mill Creek drainages, about 2.2 miles S-SW of Eagle Rock. 518 Comment
  SD49781  Microseris bigelovii J. H. Thomas 1954-5-7 4094 Santa Cruz On top of ridge between Scott and Mill Creek drainages; about 2.2 miles southsouthwest of Eagle Rock 519 Comment
  CAS-BOT-BC349031  Microseris douglasii subsp. douglasii John H. Thomas 1961-5-7 9259 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC349056  Microseris douglasii subsp. douglasii Hazelle A. Thomas; John H. Thomas 1955-4-2 4803 Santa Clara Pasture near intersection of Story Road and Bayshore Highway, near San Jose Airport, about 3 miles from center of San Jose 15 Comment
  JROH1143  Microseris douglasii subsp. douglasii John H. Thomas 1967-5-10 12853 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1145  Microseris douglasii subsp. douglasii John Hunter Thomas 1980-5-8 19958 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1151  Microseris douglasii subsp. douglasii John Hunter Thomas 1992-5-5 25211 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SD49798  Microseris douglasii subsp. douglasii J. H. Thomas 1958-5-1 7128 Santa Clara Stanford University Campus. 24 Comment
  CAS-BOT-BC349032  Microseris douglasii subsp. douglasii John H. Thomas 1969-4-24 14903 San Mateo Near Canada College, Redwood City, near Farm Hill Drive Comment
  CAS-BOT-BC349078  Microseris douglasii subsp. douglasii J. H. Thomas 1964-3-24 10285 Stanislaus About 5 mi se from Patterson. Near Oak Flat Road, R7E T6S, Patterson Quad. Eastern margin of the Inner Coast Range Comment
  JROH3218  Microsteris gracilis John H. Thomas 1968-3-17 14180 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5921  Microsteris gracilis John H. Thomas 1982-3-12 20804 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near [Escobar horse trail gate] fence. Comment
  RSA119159  Microsteris gracilis subsp. humilis John H. Thomas 1950-4-11 1516 Santa Cruz Near Bielawski Lookout Station 1006 Comment
  JROH4076  Mimulus aurantiacus var. aurantiacus John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2176  Mimulus bigelovii Tim Thomas, P. J. MacKay 1997-6-20 1807 Tulare Kern Plateau, Monanche Mdw, just south of Monanche Mtn. Summers Ridge vic of road. 2439 Comment
  JROH4078  Mimulus cardinalis John H. Thomas 1961-6-14 9544 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  UCSB68340  Mimulus guttatus Thomas, Kathryn; Emard, Lydia; Walden, Chris 1993-3-22 Santa Barbara Southern foothills of the San Rafael Range; Sedgwick Reserve; upper ranch; Fork B of Figueroa Creek 670 Comment
  YM-YOSE60039  Mimulus guttatus W. D. Thomas 1935-8-25 400 Tuolumne 1/2 MILE SW OF SUMMIT LAKE. 3139 Comment
  VVC2607  Mimulus leptaleus Tim Thomas 1983-7-26 631 Inyo Southern High Sierra, Cottonwood Lakes Basin; between Muir and Hidden Lakes 3433 Comment
  VVC2608  Mimulus leptaleus Tim Thomas, P. J. MacKay 2006-7-11 3900 Inyo Southern High Sierra, Cottonwood Lakes Basin; New Army Pass and South Fork tr jct. 3345 Comment
  RSA181250  Mimulus moschatus John H. Thomas 1961-8-13 9667 Santa Cruz Along Fall Creek about 2 miles west of Felton. 152 Comment
  VVC2609  Mimulus nanus var. mephiticus Tim Thomas 1982-8-9 527 Inyo Southern High Sierra, Cottonwood Lakes Basin, route to Windy Gap above Camp 3296 Comment
  VVC2611  Mimulus nanus var. mephiticus Tim Thomas 1983-7-26 629 Inyo Southern High Sierra, Cottonwood Lakes Basin; between Muir and Hidden Lakes 3433 Comment
  VVC1655  Mimulus palmeri Tim Thomas, PJ MacKay, RT Hawke 2004-6-20 3412 San Bernardino San Bernardino Mtns, Little Bear Ck [just east of Lk Arrowhead] upstream from FS Rd 2N26Y. 1433 Comment
  UC1063056  Mimulus tilingii W. D. Thomas 1935-8-25 400 Tuolumne 1/2 mi sw Summit Lake; Yosemite National Park, Bridgeport Quadrangle Comment
  VVC2568  Mimulus tilingii Tim Thomas 1990-8-5 1408 Inyo Southern High Sierra, Cottonwood Lakes Basin; vic Golden Trout Camp near spring box 3110 Comment
  VVC2569  Mimulus tilingii Tim Thomas, P. J. MacKay 2000-6-27 2432 Inyo Southern High Sierra, Cottonwood Lakes Basin; South Fk Ck just below old log cabin/shelter. 3114 Comment
  VVC2570  Mimulus tilingii Tim Thomas 1991-8-8 1469 Inyo Southern High Sierra., Cottonwood Basin. Above High Lake. 3518 Comment
  JROH1703  Minuartia douglasii John Hunter Thomas 1981-4-29 20512 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1705  Minuartia douglasii John Hunter Thomas 1982-4-28 20875 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC481926  Minuartia rubella John H. Thomas; Hazelle A. Thomas 1956-7-21 6182 Placer Sierra Nevada, vicinity of Donner Pass, about 80 mi NE of Sacramento 2377 Comment
  CAS-BOT-BC384011  Mirabilis jalapa J. H. Thomas 1959-8-27 8087 Santa Clara Vacant lot near corner of El Camino Real and San Antonio Rd. Los Altos 7 Comment
  CAS-BOT-BC432906  Mitella John H. Thomas 1963-7-24 10217 Mariposa Yosemite National Park. E slope of Sunrise Mt. near S end of Long Meadow. 2895 Comment
  CAS-BOT-BC432945  Mitella breweri H. A. Thomas; J. H. Thomas 1955-9-9 5413 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Bsain, 4th Recess, and adjacent Mono Creek. Alt. 9,000 - 12,900 feet. Along Mono Creek between 3rd and 4th Recesses. Altitude about 10000 feet. 3931 Comment
  VVC2559  Monardella beneolens Tim Thomas 1988-8-3 1286 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin Watershed. North shore Jenny Lake. 3238 Comment
  VVC1920  Monardella boydii Tim Thomas, P. J. MacKay, A. C. Sanders, M. Elvin 2007-10-6 4291 San Bernardino Mojave Desert, North slope Ord Mtn, in wash below Willow Spring;10 air miles S of Hwy 40 and 0.9 mi. north of pipeline road. 1460 Comment
  UCR261838  Monardella linoides Tim Thomas, P. J. MacKay 2012-6-8 5661 San Bernardino San Bernardino Mountains, Forest Service Road 1N05 east of Upper Fish Creek trail head. Ridge dividing north and south forks of Mission Creek. Small spur road to flattened knoll. 2601 Comment
  VVC2557  Monardella odoratissima subsp. glauca Tim Thomas 1985-8-16 832 Inyo Southern High Sierra, Cottonwood Lakes Basin. Between and south of Muir and Hidden Lks 3322 Comment
  CAS-BOT-BC220186  Monardella sinuata subsp. nigrescens John H. Thomas 1956-6-24 6016 Santa Cruz Near summit of Quail Hollow Road 304 Comment
  CAS-BOT-BC214139  Monardella villosa John H. Thomas 1953-7-15 3482 Santa Cruz Eagle Rock, about 4 miles NW of Boulder Creek 746 Comment
  CAS-BOT-BC214141  Monardella villosa subsp. obispoensis John H. Thomas 1955-7-16 5261 Monterey About 4.7 miles east of Nacimiento Summit as measured along the road, Santa Lucia Mountains 502 Comment
  CAS-BOT-BC214142  Monardella villosa subsp. obispoensis John H. Thomas; H. A. Thomas 1955-7-16 5240 Monterey Vicinity of Nacimiento Summit, Santa Lucia Mountains 914 Comment
  JROH2837  Monardella villosa subsp. villosa John H. Thomas 1971-5-30 15958 San Mateo Jasper Ridge Biological Preserve, Stanford University; along trail below dam Comment
  CAS-BOT-BC349517  Monolopia lanceolata H. A. Thomas; J. H. Thomas 1954-3-19 414 Monterey About 1 mile south of King City Comment
  CAS-BOT-BC444959  Montia fontana J. H. Thomas 1950-4-2 1456 Santa Cruz San Lorenzo River Valley, 1/4 mile NW of San Lorenzo School, about 1 mile N of Felton. Comment
  CAS-BOT-BC444962  Montia fontana J. H. Thomas 1954-2-19 3711 Santa Cruz Northern end of Hilton Airport between highway and airstrip. 243 Comment
  CAS-BOT-BC444964  Montia fontana J. H. Thomas 1954-2-19 3712 Santa Cruz Northern end of Hilton Airport between Highway and airstrip. 243 Comment
  CAS-BOT-BC444968  Montia fontana J. H. Thomas 1951-2-3 2545 Santa Cruz Northern end of Hilton Airport, between airstrip and highway. 243 Comment
  GH355775  Muhlenbergia asperifolia J. H. Thomas, R. J. Ferris & W. Ernst 1956-7-14 13045 Unknown Clear Creek, about 3.3 miles SW of Idria. 975 Comment
  VVC1625  Muhlenbergia richardsonis Tim Thomas, Archie Meyer 2006-8-10 4023 Mono White Mountains, Just west of the UC Crooked Creek Research Station, Archies study plot site. 3149 Comment
  CAS-BOT-BC508607  Muilla maritima John H. Thomas 1961-4-2 9054 Santa Clara Hills to the south of Junipero Serra Bvd., Stanford University Comment
  RSA176702  Muilla maritima John H. Thomas 1961-4-2 9054 Santa Clara Standford University. Hills to the south of Juniper Serra Blvd. Comment
  RSA176826  Myosotis latifolia John H. Thomas 1961-5-5 9207 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Along San Francisquito Creek below Searsville Dam. 76 Comment
  UC1252098  Myosotis latifolia J. H. Thomas 1955-3-18 4687 San Mateo 5 mi. up Tunitas Creek Rd. from coast 304 Comment
  CAS-BOT-BC101702  Myrica californica John H. Thomas 1968-2-3 14140 Mendocino About 3.2 miles south of Noyo River Bridge, along U.S. Highway 1 60 Comment
  CAS-BOT-BC101789  Myrica californica J. H. Thomas 1962-3-24 9838 San Mateo Isenberg Ranch near Langley Hill Comment
  RSA152075  Myrica californica John H. Thomas 1962-3-24 9838 San Mateo Isenberg Ranch near Langley Hill. 549 Comment
  UC1190017  Myrica californica John H. Thomas 1959-3-20 7559 San Luis Obispo ca. 17 mi. s. San Luis Obispo (Oso Flaco Lake); Oso Flaco Lake 7 Comment
  RSA132433  Myriophyllum aquaticum John H. Thomas 1958-7-15 7302 San Francisco North arm of Lake Merced between boat house and foot Bridge. Along edge of lake. Comment
  RSA176407  Myriophyllum aquaticum John H. Thomas 1964-10-2 10508 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Edge of Searsville Lake near Bridge. Comment
  VVC2992  Nama demissa var. demissa Tim Thomas, G Rink, A Schuab 2014-3-25 6207 San Bernardino Mojave Desert, Johnson Valley 1 mile West of Galway Dry Lk. 835 Comment
  CAS-BOT-BC260027  Nassella lepida John H. Thomas 1971-5-2 15855 San Mateo Near intersection of Canada Road and Edgewater Road, about 3 miles W from Redwood City 152 Comment
  CAS-BOT-BC60385  Nasturtium officinale John H. Thomas 1960-9-16 8912 Inyo Steep canyon leading into Saline Valley from the south. 1371 Comment
  CAS-BOT-BC60501  Nasturtium officinale J. H. Thomas 1955-6-14 5208 Santa Clara Stanford University Campus. Near intersection of Stanford and Mayfield Avenues. 30 Comment
  VVC3205  Navarretia hamata Tim Thomas 1985-5-9 754 Ventura Transverse Ranges, Santa Monica Mountains, ridge east of jct of Portero and Westlake Rds 383 Comment
  RSA187229  Navarretia hamata subsp. parviloba John H. Thomas 1956-7-2 6027 Santa Cruz On Ben Lomond Sand Hills 305 Comment
  JROH3201  Navarretia heterodoxa John H. Thomas 1969-6-4 15113 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68293  Navarretia mitracarpa Thomas, Kathryn; Rindlaub, Kathy; Houng, L. 1993-5-16 Santa Barbara southern foothills of the San Rafael Range; Sedgwick Reserve 640 Comment
  VVC1774  Nemacladus sigmoideus Tim Thomas, PJ MacKay 2008-5-16 4440 San Bernardino San Bernardino Mtns, Lower Marble Canyon - proposed Mitsubishi expansion. 1768 Comment
  JROH2753  Nemophila John Hunter Thomas 1991-4-25 24994 San Mateo Jasper Ridge Biological Preserve, Stanford University. Rattlesnake Rocks Comment
  JROH2755  Nemophila John Hunter Thomas 1992-4-7 25130 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Indian grinding rock. Comment
  CAS-BOT-BC219507  Nemophila parviflora J. H. Thomas 1953-3-27 2927 Santa Cruz Rancho del Oso. Along Waddell Creek, about 2 miles from the coast 45 Comment
  CAS-BOT-BC219513  Nemophila parviflora John H. Thomas 1950-5-28 1930 Santa Cruz 1 mile toward Saratoga Summit from Big Basin Junction 426 Comment
  RSA195626  Nemophila parviflora var. parviflora John H. Thomas 1950-4-22 1629 Santa Cruz Waterman Gap. 229 Comment
  VVC2668  Nemophila spatulata Tim Thomas, P. J. MacKay 2011-7-7 5469 Inyo Southern High Sierra, Cottonwood Lakes Basin, on lower east Woolyback ridge. 3360 Comment
  CAS-BOT-BC231509  Nicotiana J. H. Thomas 1960-6-8 8779 A Santa Clara Stanford University Campus. Along Juniper Serra Blvd. near Frenchman's Road 76 Comment
  RSA187244  Nicotiana acuminata John H. Thomas 1955-8-1 5298 Santa Clara Stanford University campus. In front of Law School Building. 15 Comment
  CAS-BOT-BC231564  Nicotiana glauca J. H. Thomas 1956-9-29 6460 Los Angeles Pasadena. Behind Devil's Gate Dam Comment
  CAS-BOT-BC233463  Nicotiana glauca J. H. Thomas 1964-3-31 10293 San Mateo Bank of San Francisquito Creek at University Avenue Bridge, Palo Alto Comment
  CHSC1926  Nicotiana glauca E. Thomas 1940-4-13 Los Angeles Claremont. 353 Comment
  CAS-BOT-BC231667  Nicotiana glauca J. H. Thomas 1955-7-16 5236 Monterey Near highway bridge about 1 mile south of Soledad Comment
  CAS-BOT-BC508629  Nothoscordum gracile John H. Thomas 1960-5-29 8762 Santa Clara Palo Alto, near Southern Pacific Underpass along University Avenue Comment
  CAS-BOT-BC508630  Nothoscordum gracile J. H. Thomas 1961-6-30 9579 Santa Clara Palo Alto, near University Avenue and El Camino Real Comment
  JEPS24278  Nuttallanthus texanus J. H. Thomas 1950-4-16 1607 Santa Cruz Sunset Beach State Park Comment
  CAS-BOT-BC140450  Oemleria cerasiformis John H. Thomas 1955-4-4 4819 Santa Clara Near Page Mill Road, about 3.7 miles from Stanford University 121 Comment
  JROH285  Oenanthe sarmentosa John Hunter Thomas 1978-7-8 19259 San Mateo Jasper Ridge Biological Preserve, Stanford University; behind causeway Comment
  RSA127724  Oenothera elata subsp. hookeri John H. Thomas 1959-7-8 8022 San Mateo About 1/2 mile S of Pescadero beach along the coast highway. Comment
  JROH2993  Olea europaea John H. Thomas 1977-1-23 18462 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC427485  Oligomeris linifolia John H. Thomas 1959-3-24 7610 San Bernardino About 15 miles southeastward from Baker along road to Marl Springs. 762 Comment
  VVC2153  Opuntia basilaris var. basilaris Tim Thomas 2004-4-26 3204 Kern Mojave Desert, Desert Tortoise Natural Area; 10 mi NE of California City. 843 Comment
  CAS-BOT-BC350009  Oreostemma alpigenum var. andersonii H. A. Thomas; J. H. Thomas 1955-9-13 5490 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Alt. 9,000 - 12,900 feet. Between 3rd and 2nd groups of lakes in 4th Recess 3413 Comment
  RSA136184  Ornithopus sativus John H. Thomas 1956-7-2 6039 San Mateo Along Graham Hill Road, 1.9 miles from Felton RR Station. 183 Comment
  RSA176968  Ornithopus sativus John H. Thomas 1964-6-2 10406 Santa Cruz About 3 miles from Felton toward Santa Cruz along Graham Hill Road. Comment
Read comments
Dec 3 2010
  CDA4252  Ornithopus sativus subsp. sativus John H. Thomas 1964-6-2 10406 Santa Cruz About 3 miles from Felton toward Santa Cruz along Graham Hill Road. 0 Comment
  CAS-BOT-BC499694  Orobanche californica subsp. californica J. H. Thomas 1979-7-31 19684 San Mateo San Bruno Mountain, in northern part of county. Upper portion of Reservoir Hill, NE of Guadalupe Parkway Comment
  CAS-BOT-BC500126  Orobanche fasciculata John H. Thomas 1955-5-21 5129 Napa Sarco Creek drainage, near State Hwy 37, about 6 mi from Napa 274 Comment
  CHSC1165  Orobanche parishii subsp. parishii E. Thomas 1940-5-12 Los Angeles San Fernando foothills. Comment
  CAS-BOT-BC457687  Orthilia secunda John H. Thomas 1959-9-14 8166 Fresno Sierra Nevada, vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek; along Mono Creek between 3rd and 4th Recesses 3931 Comment
  CAS-BOT-BC458060  Orthilia secunda John H. Thomas; Hazelle A. Thomas 1956-7-21 6202 Placer Sierra Nevada. Vicinity of Doner Pass, about 80 miles NE of Sacramento 2377 Comment
  RSA195624  Orthocarpus faucibarbatus var. albidus John H. Thomas 1950-4-30 1766 Santa Cruz Davenport Landing. Comment
  CLARK-A346-14  Orthocarpus purpurascens Loraine Thomas Kern Bakersfield ""Kern Canyon, Bakersfield area""; Gosford 7.5'Q Comment
  CLARK-A346-9  Orthocarpus purpurascens Loraine Thomas Kern Bakersfield Kern Canyon, Bakersfield area; Gosford 7.5'Q Comment
  GH346994  Osmaronia cerasiformis J. H. Thomas 1963-4-17 10035 Unknown Moist slope along road near Searsville Lake. Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto near Lat. N. 37 deg 24.5' Long. deg 14'W Comment
  JROH298  Osmorhiza berteroi John Hunter Thomas 1986-5-1 23998 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH299  Osmorhiza berteroi John Hunter Thomas 1986-5-17 24048 San Mateo Jasper Ridge Biological Preserve, Stanford University; dam to Rattlesnake Rock Comment
  RSA187235  Oxalis oregana John H. Thomas 1951-4-8 2584 Santa Cruz 3.5 miles inland from Aptos on Trout Gulch road (as measured along the road) Comment
  RSA132460  Oxalis pes-caprae John H. Thomas 1960-3-17 8542 San Francisco Bernal Heights, Open, grassy summit of low hill 107 Comment
  VVC3020  Oxytheca perfoliata Tim Thomas, G Rink, A Schuab 2014-3-25 6209 San Bernardino Mojave Desert, Johnson Valley; north slope mountain 3.5 miles West of Galway Dry Lk. 979 Comment
  UC1126131  Paeonia brownii W. D. Thomas 1935-7-9 164 A Alpine 1/2 mi nne Colorado Hill; Mono National Forest, Markleeville Quadrangle Comment
  CAS-BOT-BC121204  Paeonia californica John Hunter Thomas 1951-3-11 2563 Monterey Santa Lucia Mtns, rd from Jolon across the Hunter-Liggett Military Reservation to the Coast Hwy, 3.5 from the Coast Hwy 304 Comment
  CHSC403  Palafoxia arida E. Thomas 1940-3-3 Riverside Salton Sea. -60 Comment
  RSA138207  Parapholis incurva John H. Thomas 1955-5-20 5092 Solano Weeds along the RR tracks at Bahia (formerly known as Goodyear) at edge of Salicornia salt marsh, about 4 miles NE of Benecia. 0 Comment
  RSA176768  Parapholis incurva John H. Thomas 1963-5-20 10138 San Mateo Ano Nuevo Island, 1/2 mile off shore and about 20 miles NW of Santa Cruz. Comment
  CAS-BOT-BC265673  Paspalum distichum J. H. Thomas 1958-8-9 7386 Santa Clara Lagunita, Stanford University Campus 22 Comment
  CAS-BOT-BC265675  Paspalum distichum John H. Thomas 1960-9-3 8878 Santa Clara Near main entrance to Moffett Field near Mountain View, about sea level Comment
  CAS-BOT-BC202842  Paxistima myrsinites H. A. Thomas; J. H. Thomas 1954-7-23 4466 Siskiyou Salmon - Trinity Mts. About 6 miles SE of Cecilville. Vicinity of Blind Horse Creek 1036 Comment
  VVC2836  Pectocarya heterocarpa Tim Thomas 2014-4-12 6256 Kern Mojave Desert, 4.5 miles S of Cantil 640 Comment
  VVC2877  Pectocarya linearis subsp. ferocula Tim Thomas, P. J. MacKay 2010-4-12 5047 Riverside San Bernardino Mtns, Whitewater River; Mouth of Catclaw Flat, at the Paw. 878 Comment
  JROH1402  Pectocarya pusilla John H. Thomas 1975-5-2 17858 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4101  Pedicularis densiflora John H. Thomas 1957-4-16 6663 San Mateo Jasper Ridge Biological Preserve, Stanford University; on top of ridge and adjacent slopes Comment
  JROH4118  Pedicularis densiflora John Hunter Thomas 1982-1-3 20794 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4116  Pedicularis densiflora John Hunter Thomas 1981-5-15 20641 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC69299  Pellaea andromedifolia J. H. Thomas 1965-4-20 10577 Santa Cruz Near Lime Kilns along Fall Creek, about 1 1/2 miles west of Felton Comment
  JROH102  Pellaea andromedifolia John Hunter Thomas 1981-4-5 20268 San Mateo Jasper Ridge Biological Preserve, Stanford University. Below dam Comment
  JROH96  Pellaea andromedifolia John H. Thomas 1971-4-25 15784 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  CAS-BOT-BC71287  Pellaea bridgesii John H. Thomas 1959-9-19 8170 Tuolumne Near Sonora Pass Road about 3 miles below Sonora Pass as measured along the road 2590 Comment
  RSA124754  Pellaea bridgesii John H. Thomas, Hazelle A. Thomas 1956-7-22 6223 Placer Vicinity of Donner Pass, about 80 miles northeast of Sacramento. 2134 Comment
  CAS-BOT-BC71377  Pellaea mucronata John H. Thomas 1958-4-19 7112 Napa About 2 miles SW of Oakville 152 Comment
  CAS-BOT-BC71486  Pellaea mucronata John H. Thomas 1981-4-30 20435 Sutter Sutter Buttes, Huff Canyon - North Butte area 304 Comment
  CAS-BOT-BC258793  Pennisetum clandestinum John H. Thomas 1975-4-19 17788 Monterey Pacific Grove. Near Pacific Grove Museum. In parking Comment
  CHSC1849  Penstemon antirrhinoides E. Thomas 1940-3-10 Riverside San Jacinto Foothills. Comment
  VVC3179  Penstemon heterodoxus Tim Thomas 2013-7-10 6122 Inyo Southern High Sierra, Cottonwood Lakes Basin, above High Lake 3534 Comment
  VVC2796  Penstemon newberryi Tim Thomas, P. J. MacKay 2006-7-11 3899 Inyo Southern High Sierra, Cottonwood Lakes Basin; west side of Cirque Lake. 3391 Comment
  YM-YOSE60079  Penstemon newberryi W. D. Thomas 1935-8-23 381 Tuolumne NW END OF SHEPHERDS CREST 3566 Comment
  VVC2038  Penstemon rostriflorus Tim Thomas, Pam MacKay 2008-9-20 4584 Inyo Sierra Nevada Mtns, Independence Creek/Onion Valley Road. 2178 Comment
  UC1063270  Penstemon rydbergii var. oreocharis W. D. Thomas 1935-7-9 162 Alpine 2 mi n Leviathan Peak; Mono National Forest, Markleeville Quad. Comment
  VVC2794  Penstemon speciosus Tim Thomas, P. J. MacKay 2000-6-27 2434 Inyo Southern High Sierra, Cottonwood Lakes Basin; lower So. Fk Ck. 3064 Comment
  CAS-BOT-BC327977  Pentachaeta alsinoides John H. Thomas 1958-5-10 7140 San Mateo Jasper Ridge, about 5 mi SW of Palo Alto. 182 Comment
  JROH1163  Pentachaeta alsinoides John Hunter Thomas 1989-5-9 24713 San Mateo Jasper Ridge Biological Preserve, Stanford University. [Along Rd. F] 166 Comment
  JROH107  Pentagramma triangularis subsp. triangularis John H. Thomas 1956-4-7 5620 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH108  Pentagramma triangularis subsp. triangularis John H. Thomas 1964-11-29 10544 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH109  Pentagramma triangularis subsp. triangularis John H. Thomas 1968-3-17 14194 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH111  Pentagramma triangularis subsp. triangularis John H. Thomas 1974-11-5 17663 San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail below dam. Comment
  JROH313  Perideridia kelloggii John Hunter Thomas 1983-7-20 22905 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2800  Perideridia parishii subsp. latifolia Tim Thomas, PJ MacKay 2003-7-16 3007 Inyo Southern High Sierra, Cottonwood Lakes Basin; Hidden Lake stringer at trail xing. 3226 Comment
  JROH3246  Persicaria amphibia John H. Thomas 1970-7-5 15676 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3248  Persicaria amphibia John H. Thomas 1974-8-3 17496 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC419092  Persicaria lapathifolia John H. Thomas 1961-5-17 9388 a Santa Clara Bottom of Stevens Creek Reservoir, about 7 miles due south of Mountain View 152 Comment
  CAS-BOT-BC330257  Petasites frigidus var. palmatus J. H. Thomas 1954-3-15 3781 Santa Cruz Along Jamison Road. 548 Comment
  CAS-BOT-BC330263  Petasites frigidus var. palmatus H. A. Thomas; J. H. Thomas 1954-7-23 4469 Siskiyou Salmon - Trinity Mts. Abouty 6 miles SE of Cecilville. Vicinity of Blind Horse Creek. 1036 Comment
  NY83951  Phacelia ambigua G. H. Thomas s.n. Unknown Fort Yuma Comment
Read comments
Mar 24 2011
  RSA149205  Phacelia ciliata John H. Thomas 1955-4-2 4748 Santa Clara Near intersection of Middlefield and Charleston Roads, Palo Alto. 8 Comment
  CAS-BOT-BC133957  Phacelia distans John H. Thomas 1957-3-29 6517 Riverside Between Banning and Cabazon, about 2 miles east of Banning near railroad tracks. 609 Comment
  CAS-BOT-BC134010  Phacelia distans John H. Thomas 1955-5-21 5173 Napa Near State Highway No. 128 and Capell Creek, about 12 miles east of St. Helena 274 Comment
  VVC3072  Phacelia distans Tim Thomas, P. J. MacKay 2015-5-10 6617 Los Angeles San Gabriel Mtns, Jackson Lake 1896 Comment
  CAS-BOT-BC133855  Phacelia douglasii John H. Thomas 1950-4-16 1611 B Santa Cruz Sunset Beach State Park. Bluffs behind beach, Comment
  VVC2558  Phacelia eisenii Tim Thomas 2010-7-7 5237 Inyo Southern High Sierra, Cottonwood Lakes Basin; E base Mesa 3152 Comment
  VVC2669  Phacelia eisenii Tim Thomas 2011-7-5 5460 Inyo Southern High Sierra, Cottonwood Lakes Basin; just northwest of GTC 350 feet above valley floor. 3232 Comment
  VVC3265  Phacelia hastata var. compacta Tim Thomas 1995-8-19 1749 Inyo Southern High Sierra, Cottonwood Lakes Basin, south slope of Wooly Back 3745 Comment
  RSA122618  Phacelia hydrophylloides W. D. Thomas 1935-7-2 153 Alpine Hermit Valley - at river (Markleeville Quad). 2134 Comment
  RSA149201  Phacelia malvifolia John H. Thomas 1953-5-31 3312 Santa Cruz Northeast of Soda Lake. 152 Comment
  UC1236504  Phacelia malvifolia John H. Thomas 1960-4-12 8586 Santa Cruz about 1 mi inland from mouth of Waddell Creek 30 Comment
  RSA176672  Phacelia nemoralis subsp. nemoralis John H. Thomas 1961-5-17 9400 Santa Clara Disturbed slope at edge of Stevens Creek Reservoir, about 7 miles S of Mountain View. 183 Comment
  JROH2761  Phacelia nemoralis var. nemoralis John H. Thomas 1973-6-15 16848 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC265755  Phalaris John H. Thomas 1963-5-11 10067 Santa Cruz Rancho del Oso, Waddell Creek about 1/2 mile inland Comment
  CAS-BOT-BC265753  Phalaris John H. Thomas 1970-4-15 15561 Mendocino About 11 miles northeast of Gustine along Highway 140 near Bridge 39-91 over flough near San Joaquin River Comment
  JROH5352  Phalaris aquatica John H. Thomas 1962-7-15 9922 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek below dam. Comment
  JROH5373  Phalaris aquatica John Hunter Thomas 1987-5-26 24324 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA176641  Phalaris aquatica John H. Thomas 1961-8-1 9656 Santa Clara Headwaters of Stevens Creek about 9 miles south of Palo Alto 549 Comment
  CAS-BOT-BC265903  Phalaris caroliniana John H. Thomas 1974-6-5 17420 Santa Clara Palo Alto Yacht Harbor, about sea level Comment
  CAS-BOT-BC250660  Phalaris minor J. H. Thomas 1950-9-24 2421 Santa Cruz 2.5 miles from Palm Beach on road to Watsonville Comment
  CAS-BOT-BC77428  Philadelphus lewisii J. H. Thomas 1949-6-16 954 Siskiyou 1/4 miles north of Beaver Creek Public Camp, along Beaver Creek; 5 miles north of junction of Beaver Creek Comment
  UC909474  Philadelphus lewisii J. H. Thomas 1949-6-16 954 Siskiyou 1/4 mi n Beaver Creek Public Camp (along Beaver Creek 5 mi n of junction <with> Klamath River); Klamath National Forest Comment
  RSA0097441  Philadelphus lewisii John H. Thomas 1949-6-16 s.n. Siskiyou 1/4 mi north of Beaver Creek Public Camp, along Beaver Creek; 5 mi north of junction of Beaver Creek and Klamath River; Klamath National Forest. Comment
  CAS-BOT-BC253579  Phleum alpinum John H. Thomas 1957-9-2 6870 Fresno Vicinity of lowest lake in Pioneer Basin, vicinity of Mono Pss, Pioneer Basin, 4th Recess and adjacent Mono Creek, Sierra Nevada 3657 Comment
  CAS-BOT-BC171136  Phoradendron serotinum subsp. tomentosum J. H. Thomas 1949-10-30 1216 Monterey Los Padres National Forest. Between China Camp and Jamesburg 762 Comment
  CAS-BOT-BC171183  Phoradendron serotinum subsp. tomentosum John H. Thomas 1960-3-1 8536 San Mateo Jasper Ridge, about 5 miles SW of Palo Alto 182 Comment
  CAS-BOT-BC171196  Phoradendron serotinum subsp. tomentosum John H. Thomas 1973-4-28 9849 Santa Clara Mount Hamilton Range. About 1 mile due W of Mount Hamilton Observatory and about 12.5 miles E of the center of San Jose 914 Comment
  CAS-BOT-BC171208  Phoradendron serotinum subsp. tomentosum J. H. Thomas 1953-3-7 2831 Santa Cruz 1/4 mile S of Bielawski Lookout Comment
  CAS-BOT-BC171225  Phoradendron serotinum subsp. tomentosum John H. Thomas 1980-12-6 20202 Sutter Sutter Buttes, Moore Canyon area Comment
  JROH4286  Phoradendron serotinum subsp. tomentosum John H. Thomas 1955-5-6 5018 San Mateo Jasper Ridge Biological Preserve, Stanford University 182 Comment
  JROH4288  Phoradendron serotinum subsp. tomentosum John H. Thomas 1959-8-22 8080 San Mateo Jasper Ridge Biological Preserve, Stanford University 182 Comment
  CAS-BOT-BC56443  Phyllodoce breweri John H. Thomas 1959-9-14 8161 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek 3931 Comment
  CAS-BOT-BC452004  Phyllospadix scouleri John H. Thomas 1955-7-17 5285 Monterey 1.4 miles south of Prewitt Creek, near Point Gorda. Comment
  CAS-BOT-BC452052  Phyllospadix torreyi J. H. Thomas 1959-6-20 8010 San Diego La Jolla Cove. La Jolla Comment
  CAS-BOT-BC434444  Phytolacca heterotepala J. H. Thomas 1960-7-17 8783 Santa Clara Stanford University Campus. Stanford Experimental Garden. Comment
  RSA181245  Phytolacca heterotepala John H. Thomas 1960-7-17 8783 Santa Clara Stanford University Campus. Stanford Experimental Garden. Comment
  NY30481  Picea breweriana H. A. Thomas 1943-7-7 8693 Siskiyou 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
  JROH2202  Pickeringia montana var. montana John H. Thomas 1975-6-5 17937 San Mateo Jasper Ridge Biological Preserve, Stanford University; near shack Comment
  RSA144498  Picris echioides John H. Thomas 1955-8-1 5320 Santa Clara Alviso Comment
  CAS-BOT-BC73256  Pinus contorta var. latifolia H. A. Thomas; J. H. Thomas 1954-9-16 4656 Fresno Sierra Nevada - vicinity of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek. Near first lake in 4th Rec 3657 Comment
  CAS-BOT-BC73261  Pinus contorta var. latifolia H. A. Thomas 1954-7-24 4516 Siskiyou Salmon-Trinity Mts. Vicinity of Rush Lake and Rush Creek Meadow. About 9 miles E of Cecilville. 1981 Comment
  RSA181236  Pinus flexilis John H. Thomas 1964-9-8 10478 A Mono McGee Creek near Highway 395 between Lee Vining and Bishop. 2744 Comment
  VVC2511  Pinus flexilis Tim Thomas 1986-7-28 979 Inyo Southern High Sierra Nevada, Cottonwood Lakes Basin Watershed, southern slope to Owens Point. 3415 Comment
  CAS-BOT-BC78684  Pinus jeffreyi John H. Thomas 1972-9-13 16300 Mono 9 miles east of Highway 395 on Highway 120, about 15 mi. se of Lee Vining 2438 Comment
  CAS-BOT-BC78885  Pinus monophylla J. H. Thomas 1963-9-9 10252 Mono About 1 mile up Rock Creek Canyon from junction of road with highway 395 near [Tom's] Toms Place 2255 Comment
  RSA166381  Pinus monophylla John H. Thomas 1963-9-9 10252 Mono About 1 mile up Rock Creek Canyon from junction of road with highway 395 near Tom s Place (25 miles north of Bishop). 2287 Comment
  CAS-BOT-BC78931  Pinus monticola John H. Thomas; Hazelle A. Thomas 1956-7-21 6153 Placer Sierra Nevada. Vicinity of Donner Pass, about 80 miles northeast of Sacramento 2377 Comment
  CAS-BOT-BC72835  Pinus ponderosa John H. Thomas 9475 Tuolumne About 5-6 miles southwest of Pinecrest. 1798 Comment
  JROH122  Pinus radiata John Hunter Thomas 1987-4-23 24207 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET11740422  Pinus radiata J. H. Thomas 1959-4-4 7652 Santa Cruz S of mouth of Waddell Creek along the coast 30 Comment
  CAS-BOT-BC72766  Pinus sabiniana J. H. Thomas 1954-4-23 3979 Santa Clara About 0.8 miles SW of Mt. Umnuhum. 1005 Comment
  CAS-BOT-BC137322  Piperia elegans John H. Thomas 1963-9-11 10267 San Mateo Field redacted by CAS, contact the data manager for more information 396 Comment
  RSA594917  Piptatherum miliaceum John H. Thomas 1959-8-27 8088 Santa Clara Oak Hill Cemetary, San Jose 30 Comment
  VVC2622  Plagiobothrys hispidulus Tim Thomas, P. J. MacKay 2006-7-10 3876 Inyo Southern High Sierra, Cottonwood Lakes Basin; Golden Trout Camp. 3110 Comment
  JROH1428  Plagiobothrys nothofulvus John H. Thomas 1975-4-18 17785 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1433  Plagiobothrys nothofulvus John Hunter Thomas 1991-4-11 24979 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  UCSB68188  Plagiobothrys nothofulvus Thomas, Kathryn; Houng, Lynn 1993-4-5 Santa Barbara Southern foothills of the San Rafael Range; Sedgwick Reserve; upper ranch near USFS 731 Comment
  UCR241111  Plagiobothrys tenellus Tim Thomas 1991-5-2 1425 Ventura Transverse Range, east end of the Simi Hills, Sage Ranch, small drainage on east end of park 604 Comment
  VVC2184  Plagiobothrys undulatus Tim Thomas, Bill Baker 1983-6-30 579 C Riverside Santa Rosa Plateau, Burro Mesa 630 Comment
  JROH3126  Plantago erecta John Hunter Thomas 1992-4-29 25172 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3128  Plantago lanceolata John H. Thomas 1968-4-19 14292 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3133  Plantago major John H. Thomas 1959-8-22 8082 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET8389512  Plantago subnuda J. H. Thomas 1964-6-19 10433 San Mateo near Pigeon Pt. Lighthouse. Comment
  CAS-BOT-BC136642  Platanthera John H. Thomas 1961-7-19 9629 Tuolumne Field redacted by CAS, contact the data manager for more information 2438 Comment
  UCSB68285  Platanus racemosa Thomas, Kathryn; Robles, S. 1993-5-1 Santa Barbara southern foothills of the San Rafael Range; Sedgwick Reserve; downstream, east drainage; Figueroa Creek 490 Comment
  CAS-BOT-BC91918  Platystemon californicus John H. Thomas 1957-4-6 6605 San Bernardino Mojave Desert. 1.4 miles north of Yucca Valley on road to Lucerne Valley. About 19 miles west of town of Twentynine Palm 914 Comment
  CAS-BOT-BC92014  Platystemon californicus John H. Thomas 1974-5-7 17317 San Mateo San Bruno Mountain. Along Guadalupe Parkway opposite school. Comment
  CAS-BOT-BC92082  Platystemon californicus John H. Thomas 1956-3-29 5575 B Santa Clara Santa Cruz Mountains. Near Guadalupe Creek above reservoir. About 6.5 miles southeast of Los Gatos. 396 Comment
  UCSB68281  Platystemon californicus Kathryn Thomas, Lynn Houng 1993-4-5 SR- 121 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Vernal pool valley 353 Comment
  CAS-BOT-BC91847  Platystemon californicus J. H. Thomas 1949-4-9 253 Monterey Hopkins Marine Station, Pacific Grove. Comment
  RSA127084  Platystemon californicus var. californicus John H. Thomas 1959-4-4 7644 Santa Cruz Hilton Airport, about 3 miles NW of Boulder Creek 244 Comment
  CAS-BOT-BC261051  Poa John H. Thomas 1973-4-23 16676 San Benito High Peaks Trail, Pinnacles National Monument 685 Comment
  CAS-BOT-BC261063  Poa John H. Thomas 1961-7-19 9622 Tuolumne Vicinity of Camp White Wolf, Yosemite National Park 2438 Comment
  CAS-BOT-BC255594  Poa annua John H. Thomas 1954-3-5 3760 Santa Cruz N end of Hilton Airport, between airstrip and highway 243 Comment
  JROH5395  Poa annua John H. Thomas 1963-4-17 10036 B San Mateo Jasper Ridge Biological Preserve, Stanford University. Near the "riders shack" at the Searsville end of the ridge. Comment
  CAS-BOT-BC255571  Poa annua J. H. Thomas 1959-3-9 7526 Santa Clara Knoche Field near Civic Center, San Jose, bounded by Guadalupe River, Rosa Street, Asbury Street, and San Pedro Street Comment
  CAS-BOT-BC255572  Poa annua J. H. Thomas 1961-4-22 9172 A Santa Clara Mount Hamilton Range. Near Smith Creek Ranger Station Comment
  CAS-BOT-BC254877  Poa bolanderi John H. Thomas 1961-7-19 9621 Tuolumne Yosemite National Park. Vicinity of Camp White Wolf. 2438 Comment
  CAS-BOT-BC254980  Poa bulbosa John H. Thomas 1963-6-1 10157 Santa Clara Morrell Ranch, headwaters of Stevens Creek, about 9 miles S of Palo Alto 609 Comment
  VVC3182  Poa cusickii Tim Thomas 2013-7-3 6113 Inyo Southern High Sierra, Cottonwood Lakes Basin, halfway to Windy Gap from GTC along stringer. 3317 Comment
  YM-YOSE67040  Poa epilis W. D. Thomas 1935-9-12 473 Tuolumne 1/2 MILE SOUTH OF IRELAND LAKE 3413 Comment
  VVC2186  Poa howellii Tim Thomas 1988-4-12 1232 Los Angeles Transverse Range, Santa Monica Mtns; Stunt Ranch, half way along drive way. 436 Comment
  RSA596126  Poa secunda John H. Thomas 1957-9-2 s.n. Alpine Sierra Nevada; Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Between lowest lake in Poineer Basin and Mono Creek. 2744 Comment
  VVC1781  Poa secunda Tim Thomas, PJ MacKay 2008-5-12 4429 San Bernardino San Bernardino Mtns, Lower Marble Canyon. Mine expansion project. 1827 Comment
  CAS-BOT-BC235960  Poa secunda subsp. secunda John H. Thomas 1957-9-2 6882 Fresno Sierra Nevada, vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Between lowest lake in Pioneer Basin and Mono Creek 3657 Comment
  CAS-BOT-BC243153  Poa secunda subsp. secunda John H. Thomas 1955-5-5 4961 Santa Clara Near Oak Hill Memorial Cemetary, 3 miles SE of the center of San Jose 91 Comment
  CAS-BOT-BC243155  Poa secunda subsp. secunda John H. Thomas 1956-3-29 5574 Santa Clara Santa Cruz Mountains. Near Guadalupe Creek above reservoir. About 6.5 miles SE of Los Gatos 396 Comment
  CAS-BOT-BC243227  Poa secunda subsp. secunda H. A. Thomas; J. H. Thomas 1954-7-24 4512 Siskiyou Salmon-Trinity Mountains, vicinity of Rush Lake and rush Creek Meadow. About 9 miles E of Cecilville 1981 Comment
  CAS-BOT-BC244088  Poa secunda subsp. secunda John H. Thomas 1961-5-21 9415 Tuolumne About 5-6 miles SW of Pinecrest 1798 Comment
  CAS-BOT-BC244494  Poa secunda subsp. secunda John H. Thomas 1961-9-9 9746 Inyo Mono Mesa, near the junction of Mono, Inyo, and Fresno Counties 3718 Comment
  CAS-BOT-BC110691  Poaceae John H. Thomas 5545 G Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip. 243 Comment
  CAS-BOT-BC110692  Poaceae J. H. Thomas 1955-3-21 4720 W Santa Cruz Northern end of Hilton Airport, between airstrip and highway. 243 Comment
  CAS-BOT-BC110697  Poaceae J. H. Thomas 1962-4-6 9907 San Mateo Near Palo Alto airport. Comment
  JROH2855  Pogogyne serpylloides John H. Thomas 1966-4-29 11588 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1710  Polycarpon tetraphyllum var. tetraphyllum John Hunter Thomas 1983-7-7 22827 San Mateo Jasper Ridge Biological Preserve, Stanford University; old beach area Comment
  VVC1988  Polygonum amphibium Tim Thomas, Pam MacKay, Dave Clendenen 2008-8-30 4568 San Bernardino San Bernardino Mtns., Bluff Lake. 2311 Comment
  CAS-BOT-BC414106  Polygonum aviculare subsp. aviculare J. H. Thomas 1960-6-25 8784 A San Mateo Redwood City. Near Main and Stambaugh sts. Comment
  CAS-BOT-BC414272  Polygonum aviculare subsp. depressum J. H. Thomas 1953-10-3 3590 Santa Cruz Foot of Blooms Grade, 3 miles NW of Boulder Creek 243 Comment
  JROH3259  Polygonum aviculare subsp. depressum John H. Thomas 1974-8-3 17498 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC414271  Polygonum aviculare subsp. depressum J. H. Thomas 1949-5-18 536 Santa Clara West of Natural History Museum, Stanford University Campus Comment
  VVC1989  Polygonum douglasii Tim Thomas, Pam MacKay, Dave Clendenen 2008-8-30 4569 San Bernardino San Bernardino Mtns., Bluff Lake. 2311 Comment
  RSA176681  Polygonum lapathifolium John H. Thomas 1961-5-17 9388 a Santa Clara Bottom of Stevens Creek Reservoir, 7 miles due S of Mtn View. 152 Comment
  UC1252082  Polygonum lapathifolium J. H. Thomas 1959-8-27 8107 Santa Clara about 1.5 mi nw Coyote (near Hwy 101 and Metcald Rd, edge of water-filled sand and gravel pit); Santa Clara Valley 76 Comment
  VVC2746  Polygonum polygaloides subsp. kelloggii Tim Thomas, PJ MacKay 2003-7-14 2977 .1 Inyo Southern High Sierra, Cottonwood Lakes Basin; North fork Windy Gap Stringer. 3345 Comment
  UC570321  Polygonum sawatchense subsp. sawatchense W. D. Thomas 1935-7-2 132 Alpine 2 1/2 mi nw Silver Peak; Mono National Forest, Markleeville Quadrangle 2316 Comment
  CAS-BOT-BC76893  Polypodium californicum J. H. Thomas 1950-2-26 1256 Santa Cruz Santa Cruz - Along coast at western end of Cliff Drive. Comment
  CAS-BOT-BC76914  Polypodium californicum John H. Thomas 1958-3-19 7059 San Mateo San Bruno Mountain, just north of South San Francisco. 91 Comment
  JROH5430  Polypogon interruptus John H. Thomas 1962-7-15 9921 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek below dam. Comment
  CAS-BOT-BC237379  Polypogon monspeliensis John H. Thomas 1965-5-26 10667 Santa Clara Stanford University Campus. Oval in front of Quad Comment
  CAS-BOT-BC237386  Polypogon monspeliensis John H. Thomas 1950-4-15 1550 Santa Cruz Near Pajaro Gap, along Highway 67, Pajaro River Valley Comment
  JROH5442  Polypogon monspeliensis John H. Thomas 1965-12-19 11458 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along road near Searsville Lake. Comment
  UC1108512  Polypogon monspeliensis John H. Thomas 1953-5-30 3248 Santa Cruz along Pajaro River near bridge on San Juan Bautista-Watsonville Highway number 67; along Pajaro River 91 Comment
  UCR131640  Polypogon monspeliensis Tim Thomas 1992-4-22 1490 San Bernardino Southern Mojave Desert, Rabbit Springs 884 Comment
  CAS-BOT-BC237586  Polypogon viridis J. H. Thomas 1958-8-1 7369 San Mateo About 0.25 mile W of center of Pescadero Comment
  CAS-BOT-BC76732  Polystichum imbricans subsp. imbricans J. H. Thomas 1954-5-14 4176 Siskiyou Salmon Mountains, Klamath National Forest - near South Fork of Salmon River, 5 to 9 miles southeast of Cecilville, 1219 Comment
  HSC79130  Polystichum kruckebergii C. J. Thomas 1983-10-1 Siskiyou Box Camp Mtn. Ridge in Marble Mtn. Wilderness area 2098 Comment
  HSC79134  Polystichum kruckebergii C. J. Thomas 1983-10-1 83 Siskiyou N side of Black Mtn. in Marble Mtn. Wilderness 1976 Comment
  CAS-BOT-BC72473  Polystichum munitum John H. Thomas 1956-4-30 1758 Santa Cruz Near Sawmill in Waddell Creek Valley Comment
  HSC79181  Polystichum munitum C. J. Thomas 1984-9-25 116 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  HSC79139  Polystichum scopulinum C. J. Thomas 1983-10-1 95 Siskiyou Box Camp Mtn. Ridge in Marble Mtn. Wilderness, 0.5 mi. from trail 2098 Comment
  HSC79142  Polystichum scopulinum C. J. Thomas 1983-10-1 92 Siskiyou Box Camp Mtn. Ridge in Marble Mtn. Wilderness, 0.5 mi. from trail 2098 Comment
  JROH3839  Populus trichocarpa John H. Thomas 1966-4-13 11557 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3842  Populus trichocarpa John H. Thomas 1976-4-30 18099 San Mateo Jasper Ridge Biological Preserve, Stanford University. Below Dam. Comment
  CAS-BOT-BC445284  Portulaca oleracea John H. Thomas 1955-8-1 5297 Santa Clara Stanford University Campus. In front of Law School Building 15 Comment
  CAS-BOT-BC445288  Portulaca oleracea J. H. Thomas 1954-8-13 4577 Santa Clara In front of Stanford Museum, Stanford. Comment
  JROH3361  Portulaca oleracea John Hunter Thomas 1985-8-7 23708 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC3077  Potamogeton crispus Tim Thomas, P. J. MacKay 2015-5-10 6623 Los Angeles San Gabriel Mtns, Jackson Lake 1896 Comment
  JROH5517  Potamogeton pusillus John Hunter Thomas 1981-7-12 20710 San Mateo Jasper Ridge Biological Preserve, Stanford University. In lake along the shore Comment
  VVC2662  Potentilla glandulosa subsp. nevadensis Tim Thomas 2011-7-9 5480 Inyo Southern High Sierra, Cottonwood Lakes Basin - lower Golden Trout Camp meadows. 3110 Comment
  JROH4676  Prosartes hookeri John Hunter Thomas 1985-4-25 23567 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4678  Prosartes hookeri John Hunter Thomas 1988-4-21 24402 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC202365  Prosopis glandulosa var. torreyana J. H. Thomas 1949-4-23 430 San Bernardino Along Colorado River, 7 miles south of Parker Dam Comment
  CAS-BOT-BC206998  Prosopis glandulosa var. torreyana J. H. Thomas; R. S. Ferris; W. Ernst 1956-7-14 6057 San Benito New Idria Road, between Panoche and Idria, about 6.5 miles south of Panoche 548 Comment
  RSA195492  Prunella vulgaris var. lanceolata John H. Thomas 1958-8-16 7413 Santa Clara Lawn in front of Jordan Hall; Stanford University. Comment
  CAS-BOT-BC158586  Prunus J. H. Thomas 1953-2-1 2741 Santa Cruz Galletly Ranch, about 3.5 miles NE of Watsonville on State Highway 152 91 Comment
  UCSB68322  Prunus ilicifolia subsp. ilicifolia Thomas, Kathryn; Houng, Lynn 1993-5-16 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve, blue schist watershed 487 Comment
  A26860  Prunus kansuensis C. C. Thomas 1921-8-11 S.P.I. 40004 Unknown Chico, [Plant Introduction Station] Comment
  JROH755  Pseudognaphalium californicum John H. Thomas 1961-6-7 9534 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC357163  Pseudognaphalium luteoalbum John H. Thomas 1958-3-1 7033 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip 243 Comment
  CAS-BOT-BC357165  Pseudognaphalium luteoalbum John H. Thomas 1953-4-4 2953 Santa Cruz About 6 miles north of Boulder Creek, near Waterman Gap 243 Comment
  CAS-BOT-BC357151  Pseudognaphalium luteoalbum John H. Thomas 1961-6-28 9578 Santa Clara Stanford University Campus. Near Branner Hall Comment
  JROH773  Pseudognaphalium luteoalbum J. H. Thomas 1958-12-21 7510 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Lake Comment
  CAS-BOT-BC357509  Pseudognaphalium ramosissimum John H. Thomas 1976-10-7 18391 San Mateo Along coast highway #1, 0.6 miles north of northern most road to Pigeon Pt. Lighthouse. About 4.2 miles almost due south of Pescadero 30 Comment
  CAS-BOT-BC361597  Pseudognaphalium stramineum John H. Thomas 1950-4-16 1581 Santa Cruz Between Watsonville Slough and sand dunes at Palm Beach Speedway near the mouth of the Pajaro River Comment
  JROH127  Pseudotsuga menziesii var. menziesii John Hunter Thomas 1981-2-14 20222 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH128  Pseudotsuga menziesii var. menziesii John Hunter Thomas 1983-4-28 21776 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC361770  Psilocarphus brevissimus var. brevissimus John H. Thomas 1967-5-28 12915 Merced Along highway 140, about 3 miles east of Planada Comment
  CAS-BOT-BC361859  Psilocarphus oregonus J. H. Thomas 1953-4-26 3028 Solano Near Subeet, between Fairfield and Cordelia near SPRR 4 Comment
  CAS-BOT-BC362053  Psilocarphus tenellus John H. Thomas 1955-4-4 4823 Santa Clara Near Page Mill Road, about 3.7 miles from Stanford University 121 Comment
  CAS-BOT-BC362067  Psilocarphus tenellus John H. Thomas 1953-4-18 2980 Santa Cruz About 1 mile SW of Saratoga Summit 762 Comment
  UCSB68168  Psilocarphus tenellus Thomas, Kathryn; Houng, Lynn 1993-4-5 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, vernal pool valley 490 Comment
  CAS-BOT-BC362055  Psilocarphus tenellus J. H. Thomas 1964-5-9 10382 Santa Clara In parking in front of Museum Buildling, Stanford Univ. Comment
  CAS-BOT-BC72534  Pteridium aquilinum John H. Thomas; Hazelle A. Thomas 1956-7-21 6196 Placer Sierra Nevada, vicinity of Donner Pass, about 80 miles northeast of Sacramento 2377 Comment
  CAS-BOT-BC72654  Pteridium aquilinum John H. Thomas 1961-5-7 9253 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC72671  Pteridium aquilinum John H. Thomas 1957-8-25 6838 Santa Cruz Along Highway 9, about 2 miles north of Big Basin Junction 487 Comment
  CAS-BOT-BC72685  Pteridium aquilinum H. A. Thomas; J. H. Thomas 1954-7-21 4390 Siskiyou Salmon-Trinity Mts., about 6 miles SE of Cecilville, West side of Rush Creek 1036 Comment
  CAS-BOT-BC421349  Pterostegia drymarioides John H. Thomas 1955-4-4 4807 Santa Clara Near Page Mill Road, about 2.3 miles from Stanford University. 91 Comment
  UCSB68300  Pterostegia drymarioides Thomas, K.; Houng, Lynn 1993-4-5 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve, transect B 621 Comment
  UCR133162  Puccinellia Tim Thomas 1992-6-2 s.n. San Bernardino Southern Mojave Desert, Rabbit Spring near Lucerne Valley 875 Comment
  UC1128549  Purshia tridentata var. tridentata W. D. Thomas 1935-9-2 194 Mono 1 mi sw McKays Ranch in Little Antelope Valley; Markleeville Quad. 1950 Comment
  CAS-BOT-BC362173  Pyrrocoma apargioides H. A. Thomas; J. H. Thomas 1954-9-15 4655 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek. Mono Creek between 2nd and 3rd Recess. Alt. about 10,000 feet. 3657 Comment
  CAS-BOT-BC104289  Quercus X morehus John H. Thomas 1953-7-14 3427 Santa Cruz Summit Road, 1 mile SE of Saratoga Summit, near Chittenden Pass 853 Comment
  CAS-BOT-BC104290  Quercus X morehus John H. Thomas 1953-6-13 3330 Santa Cruz Mt. Charley Road, about 0.4 miles W of summit of Santa Cruz - Los Gatos Highway 594 Comment
  CAS-BOT-BC61672  Quercus agrifolia John H. Thomas 1949-10-9 1123 Santa Cruz Near Highway 9 about 1 mile north of drinking fountain toward Saratoga Summit 457 Comment
  UCSC001528  Quercus agrifolia Don Thomas 1968-1 s.n. Santa Cruz Santa Cruz; UCSC campus Comment
  CAS-BOT-BC62453  Quercus chrysolepis J. H. Thomas 1949-10-30 1203 Monterey Santa Lucia Mountains, Los Padres National Forest. Vicinity of China Camp, between Jamesburg and Tassajara Hotsprings 1524 Comment
  RSA652327  Quercus chrysolepis T. C. Thomas 1974-7-30 s.n. San Bernardino Hwy. 2, below Wrightwood. 1372 Comment
  JROH2473  Quercus douglasii John Hunter Thomas 1981-4-27 20505 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68247  Quercus douglasii Thomas, K.; Ferren, Wayne; Noel, I. 1993-6-8 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, near stream confluence, Figueroa Creek 490 Comment
  CAS-BOT-BC79557  Quercus dumosa J. H. Thomas 1953-3-7 2818 Santa Cruz Between Deer Creek and Kings Creek, 1.5 miles from Bielawski Lookout, northern Santa Cruz county 670 Comment
  CAS-BOT-BC86439  Quercus dumosa John H. Thomas 1958-4-19 7113 Napa About 2 miles SW of Oakville 152 Comment
  CHSC7171  Quercus durata Lynn R. Thomas 1969-4-1 42 Monterey E edge of Oasis Rd., ca. 5 mi n of jucntion with San Lucas Rd.; ca. 5 mi. s of King City. 152 Comment
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Jun 3 2019
  JROH2483  Quercus durata var. durata John H. Thomas 1970-4-28 15608 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2493  Quercus durata var. durata John Hunter Thomas 1984-10-14 23484 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC105406  Quercus kelloggii J. H. Thomas 1962-6-2 9904 Santa Clara Top of Monte Bello Ridge Comment
  JROH2502  Quercus kelloggii John H. Thomas 1971-8-7 16017 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA187425  Quercus kelloggii John H. Thomas 1966-3-22 11533 Napa About 5 miles north of Calistoga as measured along highway 29 on the southeast slope of Mt. St. Helena. 610 Comment
  CAS-BOT-BC62867  Quercus lobata John H. Thomas 1955-5-5 4974 Santa Clara Along Guadalupe Creek, about 6.5 miles south of center of San Jose Comment
  JROH2526  Quercus lobata John Hunter Thomas 1987-5-26 24322 San Mateo Jasper Ridge Biological Preserve, Stanford University; by old bridge to causeway Comment
  RSA118970  Quercus lobata John H. Thomas 1955-6-14 5210 Santa Clara Stanford University Campus, near intersection of Stanford and Mayfield Avenues. 30 Comment
  RSA118976  Quercus parvula var. shrevei John H. Thomas 1953-2-15 2788 Santa Cruz Boulder Creek Highway. 259 Comment
  CAS-BOT-BC104584  Quercus vacciniifolia John H. Thomas; Hazelle A. Thomas 1956-7-21 6148 Placer Vicinity of Donner Pass, about 80 miles NE of Sacramento 2377 Comment
  CAS-BOT-BC134844  Quercus wislizeni J. H. Thomas 1964-8-27 10467 Santa Cruz Along Empire Grade about 1 mile S of its intersection Felton - Bonny Doon Road 518 Comment
  RSA118974  Quercus wislizeni var. wislizeni John H. Thomas 1955-7-16 5248 Monterey 1.5 miles E of Nacimiento Summit as measured along the road. 701 Comment
  CAS-BOT-BC362432  Rafinesquia californica John H. Thomas 1973-4-23 16639 San Benito Pinnacles National Monument. High Peaks Trail, southern part 762 Comment
  CAS-BOT-BC362550  Rafinesquia californica John H. Thomas 1961-5-7 9294 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC362821  Raillardella scaposa H. A. Thomas; J. H. Thomas 1954-9-11 4596 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek. Lower part of Pioneer Basin. Alt. about 10,000 to 11,000 ft 3657 Comment
  CAS-BOT-BC362822  Raillardella scaposa H. A. Thomas; J. H. Thomas 1955-9-12 5469 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Around lowest lake in Pioneer Basin. Altitude about 10400 feet 3931 Comment
  CAS-BOT-BC379277  Ranunculus alismifolius var. alismellus John H. Thomas; Hazelle A. Thomas 1956-7-21 6086 Placer Sierra Nevada; vicinity of Donner Pass, about 80 mi northeast of Sacramento 0000000000000000000000000 2377 Comment
  UC1236506  Ranunculus californicus J. H. Thomas 1953-5-23 3179 Santa Cruz near Glenwood (summer girl's camp); Saint Mary of the Palms 304 Comment
  CAS-BOT-BC378655  Ranunculus californicus var. californicus J. H. Thomas 1954-5-26 4204 Santa Cruz northern end of Hilton Airport, between airstrip and highway 0000000000000000000000000 244 Comment
  CAS-BOT-BC378661  Ranunculus californicus var. californicus John H. Thomas 1950-3-30 1396 Santa Cruz Soquel Valley, 1 mi south of Mountain School 000000000000000000000000 Comment
  CAS-BOT-BC378653  Ranunculus californicus var. californicus John H. Thomas 1955-4-15 4916 Santa Clara Stanford University Campus; near intersection of Mayfield and Stanford Avenues Comment
  CAS-BOT-BC378662  Ranunculus californicus var. californicus John H. Thomas 1950-4-9 1488 Santa Cruz about 2-3 mi west of Santa Cruz Comment
  RSA132486  Ranunculus californicus var. cuneatus John H. Thomas 1950-3-19 1307 San Mateo Near intersection of Coast Hwy and road to Swanton, 1 mile SE of mouth of Waddell Creek. 30 Comment
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Nov 16 2021
  VVC3078  Ranunculus cymbalaria Tim Thomas, P. J. MacKay 2015-5-10 6620 Los Angeles San Gabriel Mtns, Jackson Lake 1896 Comment
  VVC3079  Ranunculus testiculatus Tim Thomas, P. J. MacKay 2015-5-10 6622 Los Angeles San Gabriel Mtns, Jackson Lake 1896 Comment
  CAS-BOT-BC74355  Raphanus sativus J. H. Thomas 1950-3-27 1361 B Santa Cruz Davenport Landing. Comment
  CAS-BOT-BC74360  Raphanus sativus J. H. Thomas 1954-5-26 4213 Santa Cruz Northern end of Hilton Airport between airstrip and highway. 243 Comment
  SEINET12209558  Rhamnus californica subsp. tomentella J. H. Thomas 1950-1 2000 Santa Cruz 4.7 mi toward Saratoga Summit from Big Basin Junction 686 Comment
  JROH3559  Rhamnus crocea John H. Thomas 1963-3-20 10029 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Westridge end of ridge. Comment
  JROH3566  Rhamnus crocea John Hunter Thomas 1981-4-27 20503 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68317  Rhamnus ilicifolia Kathryn Thomas, Kathy Rindlaub, Lynn Houng 1993-5-16 SR- 254 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Near blue schist, below flat 579 Comment
  JROH3568  Rhamnus ilicifolia John H. Thomas 1972-5-5 16078 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC109784  Rhodiola integrifolia subsp. integrifolia H. A. Thomas; J. H. Thomas 1955-9-10 5444 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Along Golden Creek between 4th Recess and Golden Lake. 3352 Comment
  CAS-BOT-BC109819  Rhodiola integrifolia subsp. integrifolia John H. Thomas 1961-9-9 9729 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo, and Fresno counties. On the southwest edge of the mesa. 3718 Comment
  CAS-BOT-BC53756  Rhododendron columbianum Hazelle A. Thomas; J. H. Thomas 1955-6-26 678 Mendocino Pine Barrens about 3 miles southeast of town of Fort Bragg. 91 Comment
  CAS-BOT-BC58169  Rhododendron columbianum H. A. Thomas; J. H. Thomas 1954-9-12 4610 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, between 3rd and 4th Recess, and adjacent Mono Creek. 3657 Comment
  SD49803  Rhododendron occidentale J. H. Thomas 1953-5-10 3131 Santa Cruz Northern end of Hilton Airport, between airstrip and highway. 239 Comment
  RSA133726  Rhododendron occidentale var. occidentale John H. Thomas 1955-5-22 5190 Sonoma Graton-occidental Road about 3.5 miles west of Occidental. 61 Comment
  CAS-BOT-BC443361  Ribes J. H. Thomas 1960-5-14 8709 Tuolumne Sierra Nevade. Pigeon Flat below Sonora Pass. 1828 Comment
  CHSC13900  Ribes californicum Lynn R. Thomas 1969-4-3 62 Monterey N edge Cachugua Rd., ca 10 mi E of junction with Carmel Valley-Tularcitos Rd. 182 Comment
  RSA124767  Ribes californicum John H. Thomas 1959-2-23 7518 San Mateo Jasper Ridge, about 5 mi SW of Palo Alto. 152 Comment
  RSA176616  Ribes californicum John H. Thomas 1964-4-7 10302 San Mateo Near edge of Searsville Lake. Jasper Ridge Biological experiment area, about 5 miles SW of Palo Alto. Coordinates are approximate. Comment
  JROH2635  Ribes californicum var. californicum John H. Thomas 1958-2-15 6989 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA121415  Ribes cereum W. D. Thomas 1935-7-2 124 Alpine Along Ebbetts Pass Hwy. 2226 Comment
  UC1127254  Ribes cereum W. D. Thomas 1935-7-2 124 Alpine Ebbetts Pass Highway Mono National Forest, Markleeville Quadrangle Comment
  JROH2657  Ribes divaricatum var. pubiflorum John Hunter Thomas 1992-4-7 25132 San Mateo Jasper Ridge Biological Preserve, Stanford University. Causeway. Comment
  CAS-BOT-BC173365  Ribes lobbii J. H. Thomas 1949-6-13 912 Humboldt Along trail between Le Perron Flat and Whitey's Peak. Six Rivers National Forest. (East of town of Orleans) 1371 Comment
  CAS-BOT-BC212871  Ribes menziesii J. H. Thomas 1966-4-10 s.n. Santa Cruz University of California, Santa Cruz campus Comment
  RSA652593  Ribes roezlii T. C. Thomas 1974-7-5 s.n. Los Angeles Vincent Gap, Hwy 2. 1768 Comment
  UC566039  Ribes roezlii W. D. Thomas 1935-7-2 123 Alpine 2 1/4 mi nw Silver Peak; Markleeville Quadrangle 2225 Comment
  UCSB2658  Ribes roezlii Thomas, Cynthia 1959-7-17 Santa Barbara Refugio Creek; 3 mi inside Los Padres National Forest 53 Comment
  CAS-BOT-BC199980  Ribes roezlii var. cruentum John H. Thomas 1954-5-14 4185 Siskiyou Salmon Mountains, Klamath National Forest. Near South Fork of Salmon River, 5 to 9 miles southeast of Cecilville 1219 Comment
  CAS-BOT-BC144585  Ribes sanguineum var. glutinosum John H. Thomas 1953-3-24 2900 Santa Cruz Vicinity of Southern Pacific Railroad trestle along the San Lorenzo River, about 3.5 miles from mouth of San Lorenzo River 91 Comment
  JROH2676  Ribes sanguineum var. glutinosum John H. Thomas 1975-5-2 17853 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2678  Ribes sanguineum var. glutinosum John Hunter Thomas 1977-6-16 18792 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along raised causeway. Comment
  CAS-BOT-BC207166  Ricinus communis John H. Thomas 1957-3-9 6495 Los Angeles Hills north of Eagle Rock, about 3-4 miles east of Pasadena 304 Comment
  RSA133973  Ricinus communis John H. Thomas 1959-8-15 8063 Santa Clara Along banks and bottom of San Francisquito Creek between University Ave. and Bayshore Freeway. Palo Alto. 0 Comment
  JROH1207  Rigiopappus leptocladus John Hunter Thomas 1990-5-2 24833 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC363069  Rigiopappus leptocladus John H. Thomas 1978-4-23 19127 San Benito Pinnacles National Monument. High Peaks, Condor Gulch, Bear Gulch trail loop 762 Comment
  UC1244705  Robinia pseudoacacia John H. Thomas 1959-8-27 8125 Santa Cruz Watsonville; intersection of Main Street and Southern Circle, vacant lot Comment
  RSA176697  Rorippa curvisiliqua John H. Thomas 1961-5-4 9204 Santa Clara Stanford University Campus. Dry lake bed of Lagunita. Comment
  UC1236535  Rorippa nasturtium-aquaticum John H. Thomas 1955-6-14 5208 Santa Clara near intersection of Stanford Avenue and Mayfield Avenue (Stanford University Campus); Stanford University Campus 30 Comment
  JROH1583  Rorippa palustris subsp. palustris John Hunter Thomas 1979-9-9 19712 San Mateo Jasper Ridge Biological Preserve, Stanford University; on dam Comment
  CAS-BOT-BC74796  Rorippa palustris var. palustris John H. Thomas 1961-5-4 9204 Santa Clara Stanford University Campus. Dry lake bed of Lagunita. Comment
  CAS-BOT-BC152636  Rosa californica J. H. Thomas 1950-9-24 2412 Santa Cruz Between Watsonville Slough and Pacific Ocean near Pajaro River Comment
  RSA185769  Rosa californica John H. Thomas 1950-9-24 2412 Santa Cruz Between Watsonville Slough and Pacific Ocean near Pajaro River Comment
  CAS-BOT-BC146717  Rosa gymnocarpa J. H. Thomas 1950-5-6 1816 Santa Cruz Upper end of Bloom's Grade, between Big Basin and Boulder Creek Comment
  UC1189996  Rosa gymnocarpa J. H. Thomas 1950-5-13 1846 Santa Cruz along Skyline Blvd. about 7.3 mi se Saratoga Summit 853 Comment
  JROH3762  Rosa gymnocarpa var. gymnocarpa John Hunter Thomas 1982-9-12 21158 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC148214  Rosa spithamea J. H. Thomas 1949-10-23 1171 Santa Cruz 0.25 miles northwest of San Lorenzo School, 1 mile north of Felton 121 Comment
  UCD92306  Rostraria cristata James Thomas 1967-5-2 s.n. Tulare 5 miles east of Ducor at Fountain Springs. Comment
  CAS-BOT-BC156651  Rubus bifrons J. H. Thomas 1960-4-26 8596 Santa Cruz Along highway no. 9, 1 mile NW. of Ben Lomond 152 Comment
  UC1252089  Rubus discolor J. H. Thomas 1959-6-11 8001 Santa Cruz along highway No. 9, 1 mi nw Ben Lomond; nw of Ben Lomond 152 Comment
  CAS-BOT-BC152810  Rubus parviflorus J. H. Thomas 1950-5-6 1791 Santa Cruz Along Boulder Creek about 1 mile upstream from town of Boulder Creek 198 Comment
  JROH3771  Rubus parviflorus John H. Thomas 1970-5-16 15632 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR209099  Rubus parviflorus Tim Thomas, P. J. MacKay 2009-5-23 4745 San Bernardino San Bernardino Mountains, FS Road 2N45 just below the intersection with FS Road 2N49 1628 Comment
  VVC1823  Rubus parviflorus Tim Thomas, PJ MacKay 2009-5-23 4745 San Bernardino San Bernardino Mtns, FS 2N45 at 5340' just blw intersection w FS 2N49; SW of Silverwood Lake. 1628 Comment
  RSA140815  Rubus parviflorus var. velutinus John H. Thomas 1953-6-18 3399 Santa Cruz Near a tributary of San Vicente Creek. About 4 miles N of Davenport. 213 Comment
  JROH3781  Rubus ursinus John Hunter Thomas 1982-5-18 20946 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along Searsville Lake near bridge Comment
  CAS-BOT-BC363191  Rudbeckia californica John H. Thomas 1961-9-15 9784 Tuolumne Between Sonora Pass and the Dardanelles along Highway 108 2590 Comment
  CAS-BOT-BC110492  Rumex John H. Thomas 1982-6-27 21043 San Benito Pinnacles National Monument. Visitors' Center to Reservoir. Comment
  CAS-BOT-BC422053  Rumex acetosella J. H. Thomas 1958-4-18 7103 San Francisco Corona Heights. 152 Comment
  CAS-BOT-BC422081  Rumex acetosella John H. Thomas 1964-4-30 10362 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC422120  Rumex acetosella J. H. Thomas 1953-5-2 3096 Santa Cruz Sunset Beach State Park. 6 Comment
  RSA195649  Rumex acetosella John H. Thomas 1953-4-4 2950 Santa Cruz Waterman Gap, along Hwy 9, 6 miles N of Boulder Creek. 244 Comment
  CAS-BOT-BC422082  Rumex acetosella John H. Thomas 1963-7-19 10195 B San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz. Comment
  CAS-BOT-BC433368  Rumex crispus J. H. Thomas 1949-4-2 222 A San Mateo Palo Alto Yacht Club. Comment
  JROH3306  Rumex pulcher John H. Thomas 1967-6-1 12964 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD101459  Rumex pulcher John H. Thomas 1958-5-13 7214 Santa Clara Stanford University Campus. Opposite the Hacienda along Escondido Rd. 15 Comment
  CAS-BOT-BC433773  Rumex pulcher J. H. Thomas 1958-6-26 7256 Alameda Along Jarvis Rd. between Marsh Rd. and Eastshore Freeway, about 2 miles north of center of Newark. 15 Comment
  JROH3311  Rumex pulcher John Hunter Thomas 1988-5-25 24490 San Mateo Jasper Ridge Biological Preserve, Stanford University. Road near low flow crossing. Comment
  CAS-BOT-BC434134  Rumex transitorius John H. Thomas 1964-6-19 10426 San Mateo 0.9 miles south of Tunitas Creek near Coast Highway. 60 Comment
  CAS-BOT-BC434138  Rumex transitorius John H. Thomas 1958-6-13 7243 Santa Clara Near North Gate at Moffett Field near Mountain View. Altitude near sea level. Comment
  CAS-BOT-BC454114  Ruppia cirrhosa John H. Thomas 1953-5-31 3299 Santa Cruz Soda Lake. 91 Comment
  UC1108519  Ruppia cirrhosa John H. Thomas 1953-5-31 3299 Santa Cruz Soda Lake 91 Comment
  JROH1714  Sagina apetala John H. Thomas 1966-4-6 11548 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA159420  Sagina apetala John H. Thomas 1961-5-14 9371 San Mateo Vicinity of Pilarcitos Stone Dam on Pilarcitos Creek. San Francisco Watershed Reserve. 152 Comment
  RSA140837  Sagittaria calycina John H. Thomas 1960-8-30 8848 Glenn Roadside ditch about 0.7 miles N of Ordbend Comment
  RSA136081  Salicornia virginica John H. Thomas 1950-9-24 2389 Santa Cruz Between Watsonville Slough and Pacific Ocean near mouth of Pajaro River and Palm Springs Speedway. Comment
  CAS-BOT-BC132753  Salix arctica H. A. Thomas; J. H. Thomas 1955-9-13 5491 Fresno Between 2nd and 3rd groups of lakes in 4th Recess; Sierra Nevada; Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek 3413 Comment
  CAS-BOT-BC132755  Salix arctica H. A. Thomas; J. H. Thomas 1954-9-13 4629 Fresno 4th Recess; Sierra Nevada; Vicinity of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek 3657 Comment
  CAS-BOT-BC103341  Salix bonplandiana J. H. Thomas 1951-4-8 2580 Santa Cruz Along edge of Pajaro River, near Highway #1 Comment
  CAS-BOT-BC103347  Salix bonplandiana John H. Thomas 1950-5-14 1898 Santa Cruz Along San Lorenzo River at Sycamore Grove Camp near Santa Cruz Comment
  CAS-BOT-BC108627  Salix breweri J. H. Thomas; R. S. Ferris; W. Ernst 1956-7-14 13036 San Benito Clear Creek, about 3.3 miles SW of Idria 975 Comment
  VVC2657  Salix drummondiana Tim Thomas, P. J. MacKay 2011-7-8 5474 Inyo Southern High Sierra, Cottonwood Lakes Basin, on south trail btw ck xing and waterfall 3262 Comment
  JROH3871  Salix lasiandra var. lasiandra John H. Thomas 1968-5-17 14177 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CHSC7061  Salix lasiolepis Lynn R Thomas 1969-5-8 112 Butte Bidwell Ave., 0.15 mi e of Rose Ave. bridge, Chico. 60 Comment
  RSA202742  Salix lasiolepis John H. Thomas 1953-3-8 2848 Santa Cruz Hestor Creek drainage. About 4 miles from jct of Hestor and Soquel creeks. Comment
  CAS-BOT-BC108258  Salix lasiolepis var. bigelovii John H. Thomas 1974-5-7 17316 San Mateo San Bruno Mountain - along Guadalupe Parkway opposite school. Western side of mountain. Comment
  CAS-BOT-BC128331  Salix lasiolepis var. lasiolepis John H. Thomas 1954-3-5 3735 Santa Cruz Summit of Los Gatos - Santa Cruz Highway. State Highway #17 near Santa Clara - Santa Cruz Co. line. 548 Comment
  CAS-BOT-BC128332  Salix lasiolepis var. lasiolepis John H. Thomas 1953-2-1 2738 Santa Cruz About 3.5 miles NE of Watsonville near highway 152. 91 Comment
  CAS-BOT-BC128337  Salix lasiolepis var. lasiolepis J. H. Thomas 1953-2-1 2740 Santa Cruz About 3.5 miles NE of Watsonville, near highway 152 91 Comment
  CAS-BOT-BC128374  Salix lasiolepis var. lasiolepis John H. Thomas 1953-2-15 2784 Santa Cruz Growing along a small stream at the northern end of Hilton Airport 243 Comment
  CAS-BOT-BC125681  Salix melanopsis H. A. Thomas; J. H. Thomas 1954-7-1 4456 Siskiyou Salmon - Trinity Mts. About 6 miles SE of Cecilville. Along north bank of S. Fork of Salmon River just west of Blind Horse Creek 883 Comment
  CAS-BOT-BC125682  Salix melanopsis H. A. Thomas; J. H. Thomas 1954-7-23 4457 Siskiyou Salmon - Trinity Mts. About 6 miles SE of Cecilville. Along north bank of S. Fork of Salmon River just west of Blind Horse Creek 883 Comment
  CAS-BOT-BC129365  Salix orestera John H. Thomas 1959-9-13 8154 Fresno Sierra Nevada - vicinity of Mono Pass, Pioneer Basin, 4th Recess, and upper Mono Creek. Vicinity of lower lake in 4th Recess. 3931 Comment
  UC1135048  Salix orestera W. D. Thomas 1935-8-22 396 Tuolumne e. side of Lower McCabe Lake (from Plot 14); Yosemite Nat'l Park, Mt. Lyell Quadrangle Comment
  CAS-BOT-BC125897  Salix planifolia John H. Thomas 1964-9-15 10497 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek. Near southern end of 4th Recess Lake 3048 Comment
  CAS-BOT-BC128958  Salix sitchensis John H. Thomas 1966-3-19 11483 Humboldt Near Westhaven Drive and highway 101, Trinidad 60 Comment
  CAS-BOT-BC229936  Salvia mellifera John H. Thomas 1957-3-9 6499 Los Angeles Chaparral covered hills north of Eagle Rock, about 3-4 miles east of Pasadena 304 Comment
  CAS-BOT-BC233389  Salvia mellifera John H. Thomas 1953-7-15 3483 Santa Cruz Eagle Rock, about 4 miles NW of Boulder Creek 746 Comment
  CAS-BOT-BC233390  Salvia mellifera John H. Thomas 1950-4-15 1551 Santa Cruz Pajaro river Valley Comment
  CHSC790  Salvia mellifera E. Thomas 1940-3-10 Los Angeles Claremont. Comment
  RSA195673  Salvia mellifera John H. Thomas 1966-5-31 11645 Santa Clara Along Hwy 17 near Lexington Dam 3 miles S of Los Gatos. Comment
  VVC2997  Salvia mohavensis Tim Thomas, G Rink, A Schuab 2014-3-25 6212 San Bernardino Mojave Desert, Johnson Valley; north slope mountain 3.5 miles West of Galway Dry Lk. 979 Comment
  CAS-BOT-BC238864  Sambucus nigra subsp. caerulea J. H. Thomas 1956-6-24 6006 Santa Cruz Santa Cruz Mountains. 0.7 miles SW of Eagle Rock 609 Comment
  CAS-BOT-BC238867  Sambucus nigra subsp. caerulea J. H. Thomas 1954-6-24 4329 Santa Cruz Northern end of Hilton Airport, between airstrip and highway 243 Comment
  JROH1673  Sambucus nigra subsp. caerulea John Hunter Thomas 1981-5-5 20544 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1675  Sambucus nigra subsp. caerulea John Hunter Thomas 1985-5-22 23669 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68203  Sambucus nigra subsp. caerulea Thomas, Kathryn; Houng, Lynn 1993-4-5 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, above wetland near upper ranch at USFS sign 719 Comment
  UCSB68109  Sanicula arguta Kathryn Thomas, Wayne Ferren 1993-4-20 SR- 149 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Upper vernal valley 353 Comment
  CAS-BOT-BC223331  Sanicula bipinnatifida John H. Thomas 1961-3-22 8983 Santa Clara At Edenvale, about 5 miles south-east of San Jose 91 Comment
  RSA159402  Sanicula bipinnatifida John H. Thomas 1961-3-22 8983 Santa Clara Hills at Edenvale, about 5 miles south-east of San Jose. 91 Comment
  JROH335  Sanicula crassicaulis John H. Thomas 1973-4-14 16552 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH341  Sanicula crassicaulis John H. Thomas 1977-4-28 18562 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH344  Sanicula crassicaulis John Hunter Thomas 1986-5-1 23996 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA133665  Sanicula crassicaulis John H. Thomas 1950-4-9 1494 Santa Cruz 2-3 miles west of Santa Cruz Comment
  RSA134130  Saponaria officinalis John H. Thomas 1954-7-9 4377 Santa Clara Uvas Road, about 7 miles NW of Gilroy. 122 Comment
  RSA185742  Saponaria officinalis John H. Thomas 1954-7-9 4351 Santa Clara Carnadero Creek at intersection of Thomas Road, about 1 mile south of Gilroy. 61 Comment
  RSA133724  Satureja douglasii John H. Thomas 1953-5-10 3113 Santa Cruz 1 mile toward Saratoga summit from intersection of State Highway 9 and Big Basin Road. 457 Comment
  RSA134101  Satureja douglasii John H. Thomas 1950-9-23 2375 Santa Cruz Foot of Blooms Grade, 3 miles NW of Boulder Creek. 244 Comment
  CAS-BOT-BC436875  Saxifraga John H. Thomas 1962-9-10 9982 Fresno 4th Recess just west of Lower Snow Lake, vicinity of Mono Pass, 4th Recess, Pioneer Basin and upper Mono Creek 3505 Comment
  VVC2652  Saxifraga nidifica var. nidifica Tim Thomas, B Keelan 2011-7-5 5454 Inyo Southern High Sierra, Cottonwood Lakes Basin; just northwest of GTC 350 feet above valley floor. 3232 Comment
  RSA133685  Scandix pecten-veneris John H. Thomas 1950-4-16 1594 Santa Cruz Between Pacific Ocean and Watsonville Slough near mouth of Pajaro River. Comment
  RSA134134  Scandix pecten-veneris John H. Thomas 1957-6-17 6813 Santa Clara On road bank near Ryan High Voltage Laboratory, Stanford campus. Comment
  CAS-BOT-BC218936  Schinus molle John H. Thomas 1960-6-25 8788 San Mateo Redwood City. Along or near a small creek running into Redwood Slough between El Camino Real and railroad tracks, near Maple Street 7 Comment
  RSA185871  Schoenoplectus maritimus John H. Thomas 1955-8-1 5315 Santa Clara Alviso Comment
  RSA135637  Schoenoplectus pungens John H. Thomas 1950-4-29 1719 Santa Cruz Mouth of Waddell Creek Comment
  CAS-BOT-BC111784  Schoenoplectus pungens var. longispicatus John Hunter Thomas 1960-6-25 8797 San Mateo Redwood City. Along or near a small creek running into Redwood Slough, 7 Comment
  VVC3136  Scirpus clementis Tim Thomas, PJ MacKay 2002-7-5 2644 Inyo Southern High Sierra, Cottonwood Lakes Basin; frog pond just below Lk 6. 3535 Comment
  UC1190029  Scirpus microcarpus J. H. Thomas 1950-9-23 2382 Santa Cruz 3 mi nw Boulder Creek (foot of Blooms Grade); foot Blooms Grade, nw of Boulder Creek 243 Comment
  CAS-BOT-BC518999  Scoliopus bigelovii J. H. Thomas 1960-3-1 8539 San Mateo Along Kings Mt. road about 1/2 mile below Skyline Blvd. 609 Comment
  RSA132362  Scoliopus bigelovii John H. Thomas 1960-3-1 8539 San Mateo Dense redwood forest along Kings Mt. road about 0.5 mile below Skyline Blve. 610 Comment
  VVC2081  Scribneria bolanderi Tim Thomas, P. J. MacKay 2011-6-18 5437 San Bernardino San Bernardino Mtns., Along FS2N33 east of Pilot Rock just west of Grass Valley Ck. 1486 Comment
  VVC2074  Scutellaria siphocampyloides Tim Thomas, P. J. MacKay 2011-6-25 5444 San Bernardino San Bernardino Mtns, Grays Peak, lower trail. 2064 Comment
  CAS-BOT-BC314200  Sedum radiatum subsp. radiatum J. H. Thomas 1953-6-14 3377 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip. 243 Comment
  CAS-BOT-BC63821  Sedum radiatum subsp. radiatum J. H. Thomas 1954-6-24 4325 Santa Cruz Northern end of Hilton Airport, open area between highway and airstrip. 243 Comment
  JROH1897  Sedum spathulifolium John Hunter Thomas 1981-5-5 20535 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  VVC2879  Selaginella bigelovii Tim Thomas, P. J. MacKay 2010-4-12 5053 Riverside San Bernardino Mtns, Whitewater River; Mouth of Catclaw Flat, at the Paw. 878 Comment
  CAS-BOT-BC69706  Selaginella wallacei John H. Thomas 1966-3-20 11505 Mendocino About 8 mi. northward from Leggett as measured along Highway 101, along s. fork of the Eel River. Comment
  CAS-BOT-BC69036  Selaginella watsonii John H. Thomas 1957-9-3 6923 Inyo Sierra Nevada - Mono Mesa, near the junction of mono, Inyo, and Fresno Counties. 3718 Comment
  CAS-BOT-BC69041  Selaginella watsonii John H. Thomas 1957-9-3 6923 Inyo Sierra Nevada - Mono Mesa, near the junction of Mono, Inyo, and Fresno Counties. 3718 Comment
  UCD135502  Senecio glomeratus John H. Thomas 1953-5-31 3305 Santa Cruz North of Soda Lake. 152 Comment
  CAS-BOT-BC364045  Senecio integerrimus var. major J. H. Thomas 1954-5-13 4137 Siskiyou Southwestern Siskiyou County. Salmon Mountains, Klamath National Forest. Near South Fork of Salmon River, 5 to 9 miles southeast of Cecilville. Vicinity of Blind Horse Creek 1066 Comment
  CAS-BOT-BC341246  Senecio scorzonella John H. Thomas 1959-9-13 8156 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek. Vicinity of lower lake in 4th Recess 3931 Comment
  CAS-BOT-BC364152  Senecio serra John H. Thomas 1959-9-10 8137 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek. 4th Recess near lower end of first lake 3931 Comment
  CAS-BOT-BC364327  Senecio triangularis H. A. Thomas; J. H. Thomas 1954-9-12 4616 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek. Mono Creek between 3rd and 4th Recess. Alt. about 10,000 ft. 3657 Comment
  CAS-BOT-BC364668  Senecio vulgaris J. H. Thomas 1953-2-1 2733 Santa Cruz Vacant lot at corner of East Lake Ave. and Hushbeck St., Watsonville 30 Comment
  JROH1223  Senecio vulgaris John H. Thomas 1967-4-20 12706 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1225  Senecio vulgaris John H. Thomas 1973-3-12 16497 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC364581  Senecio vulgaris John H. Thomas 1970-4-15 15549 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River Comment
  CAS-BOT-BC80282  Sequoia sempervirens John H. Thomas 1968-2-4 14142 Mendocino Diamond Grove, about 1 mile north of Weott Comment
  CAS-BOT-BC10709  Sequoiadendron giganteum John Hunter Thomas 1970-5-24 15638 Tuolumne Yosemite National Park, Tuolumne Grove, about 1.5 mi NW of Crane Flat. 1828 Comment
  CAS-BOT-BC438172  Sesuvium verrucosum J. H. Thomas 1949-4-23 434 San Bernardino Between Parker Dam and Cross Roads, along Colorado River. Comment
  UC1102724  Setaria pumila J. H. Thomas 1960-8-30 8850 Glenn roadside ditch ca. 0.7 mi. n. Ordbend Comment
  CAS-BOT-BC240167  Setaria verticillata John H. Thomas 1971-9-16 16022 Santa Clara Palo Alto. Along Waverley Street between Hamilton Avenue and University Avenue 15 Comment
  CAS-BOT-BC240267  Setaria viridis John H. Thomas 1961-8-13 9659 Santa Cruz Near intersection of Highways 5 and 9 near Saratoga summit 548 Comment
  JROH5462  Setaria viridis John Hunter Thomas 1981-9-24 20748 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD92871  Setaria viridis J. H. Thomas 1960-8-22 8831 Santa Clara Palo Alto. Along El Camino Real at Wells Ave. between Embarcadero and University Ave. Comment
  JROH3830  Sherardia arvensis John H. Thomas 1967-3-26 12421 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3834  Sherardia arvensis John Hunter Thomas 1984-5-3 23341 San Mateo Jasper Ridge Biological Preserve, Stanford University. Oak woodland below Rattlesnake Rock Comment
  RSA185848  Sidalcea malviflora subsp. laciniata John H. Thomas 1950-3-30 1403 Santa Cruz Soquel Valley, 1 mile south of Mountain School Comment
  RSA187474  Sidalcea malviflora subsp. malviflora John H. Thomas 1964-4-30 10360 San Mateo San Bruno Mtn in northern part. Northern Coastal Scrub of Munz and Keck 305 Comment
  UC1190000  Sidalcea malviflora subsp. malviflora John H. Thomas 1955-4-6 4877 San Francisco North Peak , Twin Peaks (Twin Peaks) 259 Comment
  UC1125001  Sidalcea oregana subsp. spicata W. D. Thomas 1935-7-9 163 Alpine 2 mi n Leviathan Peak; Mono National Forest, Markleeville Quad. Comment
  CAS-BOT-BC393456  Silene gallica John H. Thomas 1953-5-2 3093 Santa Cruz Sunset beach State Park 6 Comment
  UC1190006  Silene gallica J. H. Thomas 1953-5-23 3193 Santa Cruz summer girls' camp near Glenwood; Saint Mary of the Palms, near Glenwood 304 Comment
  JROH1732  Silene gallica John H. Thomas 1971-4-10 15757 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1740  Silene gallica John Hunter Thomas 1986-4-24 23978 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Escobar Gate Comment
  CHSC223  Silene laciniata subsp. laciniata E. Thomas 1940-5-26 Riverside Comment
  CAS-BOT-BC389791  Silene sargentii John H. Thomas 1957-9-3 6908 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo, and Fresno Counties 3718 Comment
  CAS-BOT-BC389792  Silene sargentii John H. Thomas 1961-9-9 9742 Inyo Sierra Nevada. Mono Mesa, near the junction of Mono, Inyo, and Fresno Counties 3718 Comment
  RSA124801  Silene vulgaris John H. Thomas 1958-6-13 7236 Santa Clara Disturbed field near North Gate at Moffett Field near Mountain View. 0 Comment
  CAS-BOT-BC389906  Silene vulgaris J. H. Thomas 1956-7-25 s.n. Santa Clara Near main entrance to Moffat [Moffett] Field Comment
  CAS-BOT-BC364838  Silybum marianum J. H. Thomas 1958-5-13 7172 San Francisco San Francisco. Western end of Golden Gate Park near the Sloop Gjoa. Area about sea level Comment
  CAS-BOT-BC202934  Simmondsia chinensis John H. Thomas 1957-4-6 6645 San Bernardino Mojave Desert. 1.4 miles north of Yucca Valley on road to Lucerne Valley. About 19 miles west of town of Twentynine Palms 914 Comment
  RSA176693  Sinapis alba John H. Thomas 1961-5-4 9202 Santa Clara Stanford University Campus. Dry lake bed of Lagunita. Comment
  CAS-BOT-BC74912  Sinapis arvensis J. H. Thomas 1957-3-29 6519 Riverside Between Banning and Cabazon, about 2 miles east of Banning near railroad tracks. 609 Comment
  CAS-BOT-BC74997  Sinapis arvensis John H. Thomas 1960-9-3 8879 Santa Clara Near main entrance to Moffett field near Mountain View. 0 Comment
  CAS-BOT-BC75364  Sisymbrium officinale John H. Thomas 1950-5-28 1937 Santa Cruz Between Saratoga Summit and Big Basin Junction. Comment
  RSA133720  Sisymbrium officinale John H. Thomas 1953-5-30 3259 Santa Cruz In SE part of county and near SPRR tracks. 91 Comment
  RSA133661  Sisyrinchium bellum John H. Thomas 1953-3-23 2869 Santa Cruz Saint Mary of the Palms, summer girls camp near Glenwood. 305 Comment
  CAS-BOT-BC231742  Solanum J. H. Thomas 1963-11-29 10272 A Santa Clara Stanford University Campus. Growing in parking in front of Chemistry Building Comment
  RSA135633  Solanum physalifolium var. nitidibaccatum John H. Thomas 1955-8-1 5324 Santa Clara Santa Clara Valley. Blossom Hill and Harwood Roads, near Lone hill, 6 miles S of center of San Jose. Comment
  CAS-BOT-BC154727  Solanum umbelliferum J. H. Thomas 1950-2-19 1238 San Diego Torrey Pine State Park, northern part of City of San Diego. Along Pacific Ocean Comment
  CAS-BOT-BC83627  Solanum umbelliferum J. H. Thomas 1950-10-1 2475 Santa Cruz Rancho del Oso, about 1 mile inland from coast, 8.5 miles NW of Davenport. Comment
  JROH1236  Solidago velutina subsp. californica John Hunter Thomas 1989-6-17 24779 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC365936  Soliva sessilis J. H. Thomas 1954-6-11 4283 San Mateo About 0.25 miles north of Pigeon Point Light House Comment
  CAS-BOT-BC365951  Soliva sessilis John H. Thomas 1960-4-16 8593 A Santa Cruz About 1.5-2 miles inland from the mouth of Waddell Creek 30 Comment
  CAS-BOT-BC365952  Soliva sessilis John H. Thomas 1959-4-4 7645 Santa Cruz Hilton Airport, about 3 miles NW of Boulder Creek 243 Comment
  JROH1252  Soliva sessilis John Hunter Thomas 1989-5-9 24709 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA195396  Soliva sessilis John H. Thomas 1954-6-11 4283 San Mateo About 0.25 miles north of Pigeon Point Light House along low coastal bluffs. Comment
  JROH1238  Soliva sessilis John H. Thomas 1955-5-6 5000 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC374517  Sonchus asper J. H. Thomas 1953-5-30 3246 Santa Cruz Along Pajaro River near bridge on San Juan Bautista - Watsonville highway (#67) 91 Comment
  CAS-BOT-BC374511  Sonchus asper J. H. Thomas 1964-10-18 10518 Santa Clara 838 Cedro Way, Stanford Comment
  CAS-BOT-BC235296  Sorghum bicolor J. H. Thomas 1963-11-10 10270 Santa Clara Stanford University Campus. Between Museum Building and Anatomy Building Comment
  CAS-BOT-BC236581  Sorghum halepense John H. Thomas 1968-10-6 14846 San Mateo Vicinity of railroad tracks and Dumbarton Bridge causeway entrance, east of Palo Alto Comment
  CAS-BOT-BC236582  Sorghum halepense J. H. Thomas 1965-9-8 11444 San Mateo Near intersection of Bayshore and University Avenue, east Palo Alto Comment
  UC1190004  Sparganium erectum subsp. stoloniferum John H. Thomas 1955-7-9 5235 Santa Clara dry bed of Lake Lagunita (Stanford University); Stanford University 30 Comment
  RSA133709  Sparganium eurycarpum John H. Thomas 1953-5-31 3293 Santa Cruz Along Pajaro River about 5.5 miles east of Watsonville 15 Comment
  JROH5524  Sparganium eurycarpum var. eurycarpum John Hunter Thomas 1979-5-22 19574 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5529  Sparganium eurycarpum var. eurycarpum John Hunter Thomas 1990-6-7 24866 San Mateo Jasper Ridge Biological Preserve, Stanford University; boat ramp near bridge over the 2 halves of Searsville Lake Comment
  JROH5531  Sparganium eurycarpum var. eurycarpum John Hunter Thomas 1992-7-24 25390 San Mateo Jasper Ridge Biological Preserve, Stanford University. In water near boat ramp. Comment
  CAS-BOT-BC389994  Spergula arvensis John H. Thomas 1958-7-15 7320 San Francisco San Francisco. North arm of Lake Merced between boat house and foot bridge 7 Comment
  CAS-BOT-BC390009  Spergula arvensis John H. Thomas 1961-5-7 9247 San Mateo Colma. Field near intersection of El Camino Real and F Street 45 Comment
  CAS-BOT-BC390022  Spergula arvensis John H. Thomas 1956-4-3 5592 Santa Clara Stanford University Campus. Near intersection of Stanford Ave. and Columbia St. 15 Comment
  CAS-BOT-BC390040  Spergula arvensis J. H. Thomas 1954-3-5 3746 Santa Cruz Northern part of Hilton Airport between highway and airstrip 243 Comment
  UCD99181  Spergula arvensis J. H. Thomas 1953-2-1 2721 Santa Cruz about 1/2 mile inland from Sea Cliff Beach State Park, which is between Santa Cruz and Watsonville. 60 Comment
  RSA187158  Spergula arvensis John H. Thomas 1966-3-19 11488 Humboldt Southern end of Big Lagoon, just inland from the coast between Eureka and Crescent City. 0 Comment
  CAS-BOT-BC390062  Spergularia John H. Thomas 1959-3-19 7537 San Benito About 10 miles northwest of Hollister 60 Comment
  JROH1756  Spergularia John Hunter Thomas 1978-4-25 19155 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1764  Spergularia John Hunter Thomas 1986-4-30 23984 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1769  Spergularia John Hunter Thomas 1988-5-25 24487 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  CAS-BOT-BC390175  Spergularia bocconi J. H. Thomas 1958-5-13 7185 San Francisco San Francisco. Western end of Golden Gate Park near the Sloop Gjoa. Area about sea level Comment
  CAS-BOT-BC390456  Spergularia macrotheca var. macrotheca John H. Thomas 1963-5-20 10103 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  CAS-BOT-BC390572  Spergularia rubra J. H. Thomas 1958-6-13 7248 Santa Clara Two miles N. of Milpitas near Alameda - Santa Clara Co. line near East Bay Freeway. Altitude about sea level Comment
  CAS-BOT-BC390707  Spergularia rubra J. H. Thomas 1956-6-24 6002 Santa Cruz Santa Cruz Mountains. 0.7 miles SW of Eagle Rock 609 Comment
  RSA0098089  Spergularia rubra John H. Thomas 1953-5-23 3168 Santa Cruz Near summit of Santa Cruz- Los Gatos Highway, number 17. 549 Comment
  UC1123208  Sphenosciadium capitellatum W. D. Thomas 1935-8-20 373 A Tuolumne 1 mi n upper Young Lake; Yosemite National Park, Mt. Lyell Quad., upper Young Lake Comment
  CAS-BOT-BC220969  Stachys John H. Thomas 1957-5-3 6727 Los Angeles North of Eagle Rock, about 3-4 miles east of Pasadena 304 Comment
  JROH2907  Stachys bullata John Hunter Thomas 1984-5-27 23407 San Mateo Jasper Ridge Biological Preserve, Stanford University; beyond redwood grove along San Francisquito Creek, about 300 yards to the east Comment
  RSA176661  Stachys bullata John H. Thomas 1961-7-2 9588 Santa Clara Palo Alto, San Mateo, Santa Clara County line along San Francisquito Creek between University Ave and Newell Road. 0 Comment
  RSA152069  Stachys rigida subsp. quercetorum John H. Thomas 1961-5-12 9330 San Mateo San Bruno Mountain in northern part of county. 305 Comment
  JROH2892  Stachys rigida var. quercetorum John H. Thomas 1967-5-12 12884 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC391063  Stellaria graminea John H. Thomas; W. R. Ernst 1958-5-22 7202 Santa Clara Stanford University Campus. In front of Jordan Hall 22 Comment
  CAS-BOT-BC391065  Stellaria graminea John H. Thomas; W. R. Ernst 1958-5-22 7202 Santa Clara Stanford University Campus. In front of Jordan Hall 22 Comment
  JROH1787  Stellaria media John Hunter Thomas 1983-4-5 21323 San Mateo Jasper Ridge Biological Preserve, Stanford University; low-flow crossing Comment
  CAS-BOT-BC397766  Stellaria media John H. Thomas 1976-6-15 18310 Sonoma Southern end of Sea Ranch, northwestern part of county, about 7 miles south of Gualala. 30 Comment
  JROH1777  Stellaria media J. H. Thomas 1963-2-21 10021 San Mateo Jasper Ridge Biological Preserve, Stanford University; along old road at Westridge end of ridge Comment
  RSA187246  Stellaria nitens John H. Thomas 1950-4-2 1453 Santa Barbara Santa Cruz Island. About 1 mile NW of Scott Valley, between Scott Valley and Felton. Comment
  CAS-BOT-BC397733  Stellaria nitens John H. Thomas 1973-4-23 16607 San Benito Pinnacles National Monument, Visitor Center to Bear Gulch Reservoir 502 Comment
  CAS-BOT-BC397735  Stellaria nitens John H. Thomas 1982-4-25 20850 San Benito Pinnacles National Monument, between Visitors' Center and Reservoir and between Visitors' Center and Chalone Picnic Area 518 Comment
  RSA187255  Stephanomeria virgata John H. Thomas 1950-10-1 2452 Santa Cruz Along Alba Grade, W of Ben Lomond. Comment
  UCR131646  Stipa diegoensis Tim Thomas 1992-4-8 1520 Ventura Channel Islands, San Nicolas Island 274 Comment
  JROH5323  Stipa lepida John H. Thomas 1977-5-14 18610 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5336  Stipa pulchra John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR261874  Stutzia covillei Tim Thomas 2014-5-4 6296 Los Angeles Mojave Desert, North Lancaster, 0.3 mi northeast of Sierra Hwy and West Avenue H intersection 713 Comment
  RSA181291  Stylomecon heterophylla John H. Thomas 1965-5-16 10660 Santa Clara Near old 'Mt. Hamilton Winery' along road to Mt. Hamilton, Mt. Hamilton Range Comment
  CAS-BOT-BC271620  Symphoricarpos albus var. laevigatus J. H. Thomas 1949-5-21 555 Santa Clara 2.9 miles up in the hills on Page Mill Road from its intersection with Alameda de las Pulgas Comment
  JROH1683  Symphoricarpos albus var. laevigatus John Hunter Thomas 1980-5-1 19908 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC234674  Symphoricarpos mollis John H. Thomas 1957-5-3 6723 Los Angeles North of Eagle Rock, about 3-4 miles east of Pasadena 304 Comment
  CAS-BOT-BC234769  Symphoricarpos mollis J. H. Thomas 1950-9-23 2374 Santa Cruz Foot of Blooms Grade, 3 miles NW of Boulder Creek 243 Comment
  VVC1737  Symphoricarpos rotundifolius var. parishii Tim Thomas, PJ MacKay 2008-5-16 4445 San Bernardino San Bernardino Mtns, Lower Marble Canyon - proposed Mitsubishi expansion. 1768 Comment
  CAS-BOT-BC97811  Symphyotrichum chilense John H. Thomas 1950-11-12 2505 B Santa Cruz About 1 mile north of Corralitos Comment
  CAS-BOT-BC98112  Symphyotrichum spathulatum H. A. Thomas; J. H. Thomas 1954-9-12 4602 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, Fourth Recess, and adjacent Mono Creek. Mono Creek between 3rd and 3657 Comment
  CAS-BOT-BC376634  Syntrichopappus fremontii John H. Thomas 1959-3-25 7632 Kern About 8 miles north of Randsburg, east sloping hillside 1066 Comment
  CAS-BOT-BC223930  Tamarix parviflora H. A. Thomas; J. H. Thomas 1954-3-24 480 Kern Mojave Desert. About 1 mile south of Ricardo 670 Comment
  CATA3475  Tamarix ramosissima Michael Thomas, Benjamin Dion, Nathalie Cartan 2017-9-21 002 Los Angeles Santa Catalina Island: Interior; on northern edge of Middle Ranch Reservoir 205 Comment
  JROH1283  Tanacetum parthenium John Hunter Thomas 1992-5-26 25357 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low-flow crossing Comment
  RSA176534  Tanacetum parthenium John H. Thomas 1963-8-4 s.n. Santa Cruz 0.7 mile from intersection of Hwy 9 and Big Basin Road on road to Boulder Creek. 305 Comment
  RSA187231  Taraxacum officinale John H. Thomas 1953-5-10 3127 Santa Cruz Hilton Airport, between Big Basin and town of Boulder Creek. 244 Comment
  VVC2415  Taraxacum officinale Tim Thomas 2008-7-25 4546 Inyo Southern Sierra Nevada Mtns., Along Cottonwood Creek below vicinity of road crossing the creek and above confluence with Horseshoe Mdw fork. Near the old pack station. 2896 Comment
  JROH1285  Taraxacum officinale John H. Thomas 1969-4-12 14886 San Mateo Jasper Ridge Biological Preserve, Stanford University; picnic area below dam Comment
  JROH3001  Taraxia ovata John H. Thomas 1971-4-10 15761 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3909  Tellima grandiflora John H. Thomas 1961-5-5 9209 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek below Searsville Dam 76 Comment
  RSA195668  Tellima grandiflora John H. Thomas 1967-5-7 12836 San Mateo Near intersections of Bean Hollow and Pescadero roads, about 0.5 mile westward from Pescadero. 61 Comment
  RSA127726  Tetragonia tetragonoides John H. Thomas 1959-7-8 8015 San Mateo Low moist coastal bluffs at Pescadero Beach. Comment
  CAS-BOT-BC438250  Tetragonia tetragonoides John H. Thomas 1968-12-8 14862 San Francisco Fort Point and vicinity, San Francisco. Comment
  CAS-BOT-BC392344  Thalictrum fendleri H. A. Thomas; J. H. Thomas 1955-9-9 5423 Fresno Sierra Nevada. Vicinity of Mono Pass, Pioneer Basin, 4th Recess, and adjacent Mono Creek. Along Mono Creek between 3rd and 4th Recesses. Altitude about 10000 feet 3931 Comment
  CAS-BOT-BC399840  Thalictrum polycarpum J. H. Thomas 1954-4-3 3835 San Mateo Pilarcitos Creek Road, 3.5 miles NE of Halfmoon [Half Moon] Bay 121 Comment
  SD49776  Thermopsis macrophylla J. H. Thomas 1953-6-18 3388 Santa Cruz Ca. 2 miles south of Empire Grade on the road to Warrenella, in cleared areas along roadside 609 Comment
  CAS-BOT-BC202039  Thinopyrum ponticum John H. Thomas 1980-12-6 20205 Sutter Greylodge Bird Refuge, north of Sutter Buttes Comment
  CAS-BOT-BC66532  Thysanocarpus curvipes John H. Thomas 1977-3-23 18483 Riverside Joshua Tree National Monument. Live Oak Picnic Area, about 10 miles south of Twenty Nine Palms. Comment
  CAS-BOT-BC66656  Thysanocarpus curvipes J. H. Thomas 1954-5-7 4068 San Mateo Near Skyline Boulevard. About 2 miles southwest of Black Mountain. 655 Comment
  CAS-BOT-BC66658  Thysanocarpus curvipes John H. Thomas 1968-4-13 14290 A San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Comment
  CAS-BOT-BC66661  Thysanocarpus curvipes John H. Thomas 1968-4-13 14290 A San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Comment
  CAS-BOT-BC66744  Thysanocarpus curvipes Hazelle A. Thomas; John H. Thomas 1955-5-14 5064 Santa Clara Mount Hamilton Range. One mile due west of Mount Hamilton summit. About 12.5 miles east of the center of San Jose. 914 Comment
  CAS-BOT-BC66764  Thysanocarpus curvipes John H. Thomas 1975-5-3 17863 Santa Clara Mount Hamilton Range. About 1 mile due west of Mount Hamilton Observatory. 914 Comment
  CAS-BOT-BC66778  Thysanocarpus curvipes J. H. Thomas 1950-5-13 1836 Santa Cruz 1.2 mile southeast of Saratoga Summit along Skyline Boulevard. 822 Comment
  CAS-BOT-BC66780  Thysanocarpus curvipes John H. Thomas 1955-3-21 4704 Santa Cruz About 1 mile below Saratoga Summit. 746 Comment
  CAS-BOT-BC66843  Thysanocarpus curvipes John H. Thomas 1981-4-20 20404 Sutter Sutter Buttes. Dean Place. 213 Comment
  JROH1623  Thysanocarpus curvipes John Hunter Thomas 1991-4-9 24976 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1189994  Thysanocarpus curvipes J. H. Thomas 1950-5-13 1836 Santa Cruz along Skyline Blvd 1.2 mi se Saratoga Summit; se of Saratoga Summit 822 Comment
  CAS-BOT-BC66507  Thysanocarpus curvipes John H. Thomas 1968-4-4 14274 Napa About 3 miles north of Calistoga on road to Lakeport. Comment
  CAS-BOT-BC88323  Thysanocarpus curvipes John H. Thomas 1968-4-21 14355 Humboldt About 6.4 miles south of Weitchpec (as measured along the road). 170 Comment
  VVC2903  Thysanocarpus curvipes subsp. amplectens Tim Thomas, P. J. MacKay 2010-4-12 5034 Riverside San Bernardino Mtns, Whitewater River; Mouth of Catclaw Flat, at the Paw. 878 Comment
  JROH1593  Thysanocarpus curvipes subsp. curvipes John Hunter Thomas 1981-4-7 20299 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  SD49771  Thysanocarpus curvipes subsp. curvipes John H. Thomas 1956-5-2 5677 Santa Clara Monte Bello Ridge, ca. 5.0 miles south of Los Altos. 609 Comment
  JROH1595  Thysanocarpus curvipes subsp. elegans John Hunter Thomas 1981-4-21 20455 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA0039330  Thysanocarpus curvipes var. curvipes John H. Thomas 1953-3-24 2922 Santa Cruz On northern side of Boulder Creek near intersection of Jamison Road and Big Basin-Boulder Creek Highway, about 2.5 miles northwest of town of Boulder Creek. 274 Comment
  CAS-BOT-BC67115  Thysanocarpus laciniatus John H. Thomas 1973-4-23 16660 San Benito Pinnacles National Monument. Foot Trail and upper part of Chalone Creek Trail. 762 Comment
  CAS-BOT-BC67040  Thysanocarpus laciniatus John H. Thomas 1968-4-11 14282 Monterey Santa Lucia Mountains. 0.9 mile E of intersection of rd to Jamesburg. About 14 mi westward from Greenfield. Arroyo Seco. Comment
  CAS-BOT-BC67335  Thysanocarpus radians John H. Thomas 1968-4-4 14268 Sonoma 2.8 miles northeast of highway 101 on road to Mark Springs West, along Mark Springs road. Comment
  RSA134141  Tiarella trifoliata var. unifoliata John H. Thomas 1953-6-18 3400 Santa Cruz Near a tributary of San Vicente Creek, about 4 miles north of Davenport. 213 Comment
  JROH394  Torilis nodosa John Hunter Thomas 1986-5-6 24018 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH391  Torilis nodosa John Hunter Thomas 1983-6-2 22327 San Mateo Jasper Ridge Biological Preserve, Stanford University; near green shack Comment
  JROH396  Torilis nodosa John Hunter Thomas 1986-5-15 24045 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH403  Torilis nodosa John Hunter Thomas 1989-5-9 24697 San Mateo Jasper Ridge Biological Preserve, Stanford University; near old shack riders shack Comment
  JROH4755  Toxicoscordion fremontii John H. Thomas 1956-4-7 5604 San Mateo Jasper Ridge Biological Preserve, Stanford University. Open serpentine area on top of ridge and adjacent slopes Comment
  JROH4761  Toxicoscordion fremontii John Hunter Thomas 1982-2-19 20800 San Mateo Jasper Ridge Biological Preserve, Stanford University. Chaparral near Goya Gate Comment
  CAS-BOT-BC377153  Tragopogon porrifolius J. H. Thomas 1953-5-30 3234 Santa Cruz Along Pajaro River near bridge on San Juan Bautista - Watsonville highway (#67) 91 Comment
  RSA124750  Tribulus terrestris John H. Thomas 1958-9-1 7464 Santa Clara Weeds near intersection of Alma Street and California Ave. near Southern Pacific depot. Palo Alto. Comment
  JROH3392  Trientalis latifolia John H. Thomas 1974-5-3 17248 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  JROH2226  Trifolium albopurpureum John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR131644  Trifolium amplectens Tim Thomas, Steven A. Junak 1992-4-9 1514 Ventura Channel Islands, San Nicolas Island 274 Comment
  UC1236544  Trifolium barbigerum J. H. Thomas 1954-4-10 3886 Santa Cruz n end Hilton Airport (betw hwy and airstrip); ; see map on label 243 Comment
  UC1236540  Trifolium campestre John H. Thomas 1958-5-24 7209 Santa Clara near Branner Hall; Stanford University Campus Comment
  UCSB68243  Trifolium ciliolatum Thomas, Kathryn; Frye, K. 1993-5-8 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, near first gate, Long Valley on upper west slope 490 Comment
  JROH2257  Trifolium ciliolatum John H. Thomas 1975-4-30 17842 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Escobar Gate Comment
  JROH2276  Trifolium depauperatum var. truncatum John Hunter Thomas 1985-4-11 23524 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2233  Trifolium dichotomum John H. Thomas 1975-4-19 17797 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2286  Trifolium fucatum John H. Thomas 1958-5-10 7148 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2288  Trifolium fucatum John H. Thomas 1964-4-19 10321 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2296  Trifolium fucatum John Hunter Thomas 1980-5-6 19924 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2299  Trifolium fucatum John Hunter Thomas 1982-4-28 20873 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA131367  Trifolium gracilentum John H. Thomas 1956-5-2 5706 Santa Clara Monte Bello Ridge, about 5 miles south of Los Altos. 793 Comment
  UCR131651  Trifolium gracilentum Tim Thomas 1993-4-13 1607 Santa Barbara Channel Islands, Santa Rosa Island, Cherry Canyon 76 Comment
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Jun 19 2018
  UCR209088  Trifolium gracilentum Tim Thomas, P. J. MacKay, D. Charlton 2003-5-17 3061 San Bernardino San Bernardino Mountains, west end of the Pacific Crest Trail in the vicinity of Hwy 15 966 Comment
  UCR240538  Trifolium gracilentum Tim Thomas, P. J. MacKay, D. Charlton 2003-5-17 3061 San Bernardino San Bernardino Mountains, west end of the Pacific Crest Trail in the vicinity of Hwy 15 966 Comment
  RSA181333  Trifolium grayi John H. Thomas 1965-6-1 10679 Santa Cruz Camp Evers, between Felton and Scott Valley. Comment
  JROH2330  Trifolium hirtum John Hunter Thomas 1988-6-2 24498 San Mateo Jasper Ridge Biological Preserve, Stanford University; beach Comment
  JROH2321  Trifolium hirtum John Hunter Thomas 1982-5-18 20942 San Mateo Jasper Ridge Biological Preserve, Stanford University; old road now partly plowed up, near main gate Comment
  JROH2339  Trifolium microdon John H. Thomas 1964-4-19 10316 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville end of ridge Comment
  UCR13434  Trifolium obtusiflorum R. Thomasson 1973-5-30 s.n. Riverside Riverside, Box Springs Mtns, Big C turnoff, 0.6 mi from Box Springs Road, about 200 yards down gulley 777 Comment
  RSA131341  Trifolium oliganthum John H. Thomas 1955-5-11 5032 Santa Cruz On top of ridge between Scott and Mill Creek drainages, about 2.2 miles S - SW of Eagle Rock. 518 Comment
  RSA187251  Trifolium oliganthum John H. Thomas 1958-4-12 7081 Santa Clara Near Page Mill road, 2.3 miles from Stanford University. 61 Comment
  RSA131350  Trifolium repens John H. Thomas 1953-6-14 3339 Santa Cruz Marsh at Camp Evers. 152 Comment
  UC1195191  Trifolium repens John H. Thomas 1960-6-1 8766 Santa Clara near Frenchman's Rd (vacant lot along Junipero Serra Blvd.); Stanford University Campus Comment
  JROH2362  Trifolium subterraneum John Hunter Thomas 1987-5-19 24299 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2381  Trifolium variegatum John H. Thomas 1971-4-10 15762 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2391  Trifolium variegatum John Hunter Thomas 1992-4-23 25155 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Indian grinding rock and along trail to redwoods Comment
  VVC2037  Trifolium variegatum Tim Thomas, PJ MacKay 2009-5-23 4719 San Bernardino San Bernardino Mtns, West of Lk Silverwood, below Cleighorn Pass; FS Rd 2N59 1078 Comment
  RSA131363  Trifolium variegatum var. melananthum John H. Thomas 1953-6-14 3347 Santa Cruz Marsh at Camp Evers. 152 Comment
  UC1236546  Trifolium variegatum var. melananthum J. H. Thomas 1953-6-14 3347 Santa Cruz Camp Evers Comment
  JROH2407  Trifolium willdenovii John Hunter Thomas 1981-4-23 20475 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA131356  Trifolium willdenovii John H. Thomas 1954-4-30 4021 Santa Cruz W side of Mill Creek drainage. About 2.3 miles SSW of Eagle Rock 457 Comment
  RSA131345  Trifolium wormskioldii John H. Thomas 1953-6-14 3338 Santa Cruz Marsh at Camp Evers. 152 Comment
  UCSB282  Triglochin concinna Thomas, Cynthia 1959-7-16 Santa Barbara Slough near UCSB Campus and Goleta airport Comment
  CAS-BOT-BC520837  Trillium albidum J. H. Thomas 1949-6-16 946 Siskiyou 1/4 miles north of Beaver Creek Public Camp, along Beaver Creel; 5 miles north of junction of Beaver Creek and Klamath River; Klamath National Forest Comment
  JROH4722  Trillium chloropetalum John H. Thomas 1964-4-19 10330 San Mateo Jasper Ridge Biological Preserve, Stanford University. Area below dam in among redwoods near creek Comment
  CAS-BOT-BC133431  Trillium ovatum John Hunter Thomas 1954-4-3 3822 San Mateo Along San Gregorio Creek about 1.5 miles west of La Honda 106 Comment
  CAS-BOT-BC133456  Trillium ovatum John H. Thomas 1950-4-8 1463 Santa Cruz Boulder Creek Canyon, about 1 1/2 miles from Boulder Creek toward Big Basin 243 Comment
  JROH4146  Triphysaria pusilla John Hunter Thomas 1989-5-5 24660 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC193555  Trisetum spicatum John H. Thomas; H. A. Thomas 1955-9-10 5452 Fresno Along shore of Golden Creek, Pioneer Basin, 4th Recess and adjacent Mono Creek, vicinity of Mono Pass, Sierra Nevada 3931 Comment
  JROH4737  Triteleia hyacinthina John H. Thomas 1967-6-1 12961 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4741  Triteleia hyacinthina John Hunter Thomas 1981-4-30 20519 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC526396  Triteleia laxa John H. Thomas 1955-5-5 4958 Santa Clara Hills near Oak Hill Memorial Cemetery, 3 miles southeast of teh center of San Jose 91 Comment
  JROH4753  Triteleia laxa John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD139391  Triteleia laxa Carolyn Thomas 1974-4-14 10822 Napa near Yountville, near Thomas Ranch. 274 Comment
  CAS-BOT-BC526363  Triteleia laxa John H. Thomas 1971-5-2 15847 San Mateo Near intersection of Canada and Edgewater Roads, about 4 miles SW of center of Redwood City 304 Comment
  CAS-BOT-BC200517  Triticum aestivum J. H. Thomas 1959-6-6 7989 San Francisco Near Opera House. San Francisco Comment
  CAS-BOT-BC73869  Tropidocarpum gracile J. H. Thomas 1964-3-24 10291 Stanislaus Eastern margin of the Inner Coast Range. About 5 miles southwest from Patterson. Near Oak Flat Road. Comment
  CAS-BOT-BC74084  Turritis glabra J. H. Thomas 1953-5-31 3277 Santa Cruz Susnet Beach State Park. Comment
  JROH5533  Typha angustifolia John H. Thomas 1967-5-31 12928 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD94650  Typha angustifolia J. H. Thomas 1955-8-1 5314 Santa Clara Santa Clara County. Comment
  JROH4226  Ulmus minor John Hunter Thomas 1992-5-14 25222 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near boat ramp Comment
  CAS-BOT-BC91138  Umbellularia californica John H. Thomas 1957-3-7 6490 Los Angeles South slope of San Gabriel Mountains, near State Highway #2, Angeles Crest Highway, about 3.5 miles north of La Canada. 914 Comment
  CAS-BOT-BC91246  Umbellularia californica John H. Thomas 1950-4-11 1526 Santa Clara Upper part of Deer Creek Drainage, near Bielawski Lookout Tower. 883 Comment
  RSA132457  Umbellularia californica John H. Thomas 1959-8-22 8081 San Mateo Jasper Ridge, about 5 miles southwest of Palo Alto. 152 Comment
  UC1189990  Umbellularia californica J. H. Thomas 1953-10-3 3589 Santa Cruz about 1 mi s of Saratoga Summit (along State Highway #9); State Highway #9 Comment
  CAS-BOT-BC381980  Uropappus lindleyi John H. Thomas 1973-4-23 16645 San Benito Pinnacles National Monument. High Peaks Trail, southern part 762 Comment
  CAS-BOT-BC382799  Uropappus lindleyi Hazelle A. Thomas; John H. Thomas 1955-4-2 4758 Santa Clara Hills about 0.5 mile north of Edenvale RR Station, about 5 miles south-east of San Jose 91 Comment
  CAS-BOT-BC382800  Uropappus lindleyi Hazelle A. Thomas; John H. Thomas 1955-4-2 4758 Santa Clara Hills about 0.5 mile north of Edenvale RR Station, about 5 miles south-east of San Jose 91 Comment
  JROH1295  Uropappus lindleyi John Hunter Thomas 1988-5-3 24443 San Mateo Jasper Ridge Biological Preserve, Stanford University; powerline draw Comment
  JROH4235  Urtica dioica subsp. holosericea John H. Thomas 1961-6-14 9547 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near bridge across the two parts of Searsville Lake Comment
  CAS-BOT-BC412536  Urtica urens John H. Thomas 1968-12-18 14870 San Mateo About 1 mile west of Pescadero toward the coast Comment
  CAS-BOT-BC193894  Vaccinium ovatum J. H. Thomas 1953-4-4 2960 Santa Cruz Foot of Blooms Grade, 3 miles NW of Boulder Creek 243 Comment
  CAS-BOT-BC193898  Vaccinium ovatum J. H. Thomas 1954-2-22 3730 Santa Cruz Pine Mountain, Big Basin Redwoods State Park 670 Comment
  CAS-BOT-BC199361  Vaccinium ovatum John H. Thomas 1961-5-7 9298 San Mateo San Bruno Mountain in northern part of county 396 Comment
  VVC3145  Veratrum californicum Tim Thomas, PJ MacKay 2007-8-13 4225 Inyo Southern High Sierra, Cottonwood Lakes Basin Watershed. Jenny Lake. 3232 Comment
  JEPS24256  Verbascum blattaria J. H. Thomas 1960-5-10 8718 Tuolumne on road to Keystone 5 mi sw Sonora; Sierra Nevada foothills, sw of Sonora 365 Comment
  UCD124686  Verbascum blattaria J. H. Thomas 1960-5-10 8718 Tuolumne Sierra Nevada foothills, about 5 miles SW of Sonora on road to Keystone. 365 Comment
  JEPS23861  Verbascum thapsus J. H. Thomas 1959-8-27 8108 Santa Clara near Highway No. 101 and Metcalf Road about 1.5 mi nw Coyote (Santa Clara Valley); Santa Clara VAlley 76 Comment
  JROH4148  Verbascum thapsus John Hunter Thomas 1982-5-25 20963 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC219590  Verbena J. H. Thomas 1954-6-24 4334 Santa Cruz Northern end of Hilton Airport, between airstrip and highway 243 Comment
  CAS-BOT-BC219589  Verbena John H. Thomas 1960-7-19 8822 Santa Clara Stanford University Campus. Near Branner Hall Comment
  JROH4257  Verbena lasiostachys var. lasiostachys John H. Thomas 1962-5-31 9895 San Mateo Jasper Ridge Biological Preserve, Stanford University. Oak woodland near Westridge end of ridge Comment
  RSA187222  Verbena lasiostachys var. lasiostachys John H. Thomas 1950-10-1 2470 Santa Cruz Banks of Waddell Creek. Comment
  UCSB68344  Verbena lasiostachys var. lasiostachys Thomas, Kathryn 1993-1-22 Santa Barbara Southern foothills of the San Rafael Range, Sedgwick Reserve, upper Sedgwick ranch 670 Comment
  JROH4276  Verbena lasiostachys var. scabrida John H. Thomas 1974-10-26 17626 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4278  Verbena lasiostachys var. scabrida John Hunter Thomas 1981-9-24 20742 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB6218  Veronica anagallis-aquatica Thomas, Cynthia 1959-7-10 Santa Barbara Santa Ynez River; 1/2 mi S of Buellton; Hwy. 101 Comment
  JROH4150  Veronica arvensis John H. Thomas 1978-4-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4154  Veronica persica John Hunter Thomas 1983-4-20 21535 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low-flow crossing Comment
  VVC2614  Veronica serpyllifolia subsp. humifusa Tim Thomas, P. J. MacKay 2004-7-11 3464 Inyo Southern High Sierra, Cottonwood Lakes Basin; Golden Trout Camp spring box creek drainage. 3110 Comment
  CAS-BOT-BC238160  Veronica wormskjoldii John H. Thomas 1964-9-15 10501 Fresno Sierra Nevada. Vicinity of Mono Pass, 4th Recess, Pioneer Basin, and upper Mono Creek. South end of 4th Recess Lake 3931 Comment
  JROH2438  Vicia sativa subsp. nigra John Hunter Thomas 1982-4-28 20867 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2436  Vicia sativa subsp. nigra John Hunter Thomas 1981-4-5 20267 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2452  Vicia sativa subsp. sativa John Hunter Thomas 1988-4-21 24403 San Mateo Jasper Ridge Biological Preserve, Stanford University; near bridge over San Francisquito Creek Comment
  JROH423  Vinca major John H. Thomas 1967-4-20 12708 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC263821  Viola John H. Thomas; Hazelle A. Thomas 1956-7-21 6206 Placer Sierra Nevada. Vicinity of Donner Pass, about 80 miles NE of Sacramento 2377 Comment
  CAS-BOT-BC264048  Viola adunca John H. Thomas 1964-4-30 10354 San Mateo San Bruno Mountain in the N part of county 396 Comment
  VVC2567  Viola adunca Tim Thomas, P. J. MacKay 2004-7-14 3480 Inyo Southern High Sierra, Cottonwood Lakes Basin; outfall of Lk 5 3415 Comment
  HSC77335  Viola cuneata C. J. Thomas 1983-5-14 61 Del Norte French Hill Rd., 3.45 mi. from Hwy. 199 526 Comment
  CAS-BOT-BC536571  Viola glabella John Hunter Thomas 1954-4-3 3814 San Mateo La Honda Creek, about 1 mi N of La Honda 152 Comment
  UC1761988  Viola macloskeyi Herbert A. Thomas 1936-6-22 132 Plumas Jacks Meadow, Camp Califorest, Meadow Valley P.O. 1767 Comment
  RSA132375  Viola pedunculata John H. Thomas 1960-3-17 8547 San Francisco Bernal Heights. 107 Comment
  CHSC2026  Viola pedunculata subsp. tenuifolia E. Thomas 1940-4-14 San Diego Oceanside. Comment
  CAS-BOT-BC199850  Vulpia bromoides John H. Thomas 1967-5-2 12822 San Mateo Along Skyline Blvd, 0.4 miles south of Black Mountain Road intersection. Hillsborough Comment
  CAS-BOT-BC183085  Vulpia microstachys var. ciliata Hazelle Ann Thomas; John H. Thomas 1956-4-2 5586 El Dorado Between Placerville and Shingle Springs along U.S. Highway No. 50, 2.2 miles east of Shingle Springs as measured along the highway 457 Comment
  UC1190044  Vulpia microstachys var. microstachys J. H. Thomas 1950-5-6 1809 Santa Cruz between Big Basin and Boulder Creek (upper end of Bloom's Grade); Bloom's Grade Comment
  CAS-BOT-BC184559  Vulpia microstachys var. pauciflora John H. Thomas 1955-5-5 4946 Santa Clara Foothills of the Mt. Hamilton Range bordering the Santa Clara Valley. About 1 mile up Metcalfe Canyon, 1.5 miles north of Coyote 213 Comment
  SD71261  Vulpia myuros John Thomas, Howell 1963-5-5 39052 Monterey Mustang Grade west of Priest Valley 671 Comment
  CAS-BOT-BC185770  Vulpia myuros subsp. megalura John H. Thomas 1961-5-13 9343 San Mateo At Franklin Point Comment
  CAS-BOT-BC185805  Vulpia myuros subsp. megalura John H. Thomas 1955-4-8 4910 Santa Cruz Sand hills east of Ben Lomond. Near Quail Hollow Road 152 Comment
  CAS-BOT-BC185811  Vulpia myuros subsp. megalura John H. Thomas 1954-4-10 3892 A Santa Cruz Northern end of Hilton Airport between Airstrip and highway 243 Comment
  CAS-BOT-BC185812  Vulpia myuros subsp. megalura John H. Thomas 1953-5-2 3051 Santa Cruz Along Robak Drive, about 1/2 mile north of La Selva Beach, Robroy 15 Comment
  RSA187170  Vulpia myuros var. hirsuta John H. Thomas 1955-4-8 4897 Santa Cruz Sand hills east of Ben Lomond. Near Quail Hollow Road. 152 Comment
  CAS-BOT-BC185989  Vulpia myuros var. myuros John H. Thomas 1955-4-6 4852 B San Francisco North peak, Twin Peaks 274 Comment
  CAS-BOT-BC186046  Vulpia octoflora var. octoflora J. H. Thomas 1950-5-14 1884 Santa Cruz Ben Lomond Sand Hills, near summit of Quail Hollow Road on Ben Lomond side 152 Comment
  CAS-BOT-BC128763  Whipplea modesta John H. Thomas; Hazelle A. Thomas 1955-6-26 679 Mendocino Pine Barrens about 3 miles southeast of town of Fort Bragg 91 Comment
  CAS-BOT-BC73615  Woodwardia fimbriata J. H. Thomas 1950-3-29 1369 Santa Cruz Waterman Gap, near San Lorenzo River. 228 Comment
  CAS-BOT-BC382878  Wyethia angustifolia John H. Thomas 1981-4-20 20383 Sutter Sutter Buttes. Dean Place 213 Comment
  CAS-BOT-BC383227  Wyethia angustifolia John H. Thomas 1956-4-30 5660 Santa Clara Stanford University Campus 22 Comment
  CAS-BOT-BC383323  Wyethia glabra J. H. Thomas 1961-5-23 9448 Santa Clara Along Page Mill Road, about 4 miles westward from Los Altos 609 Comment
  JROH1317  Wyethia glabra John Hunter Thomas 1988-5-3 24445 San Mateo Jasper Ridge Biological Preserve, Stanford University; near dam Comment
  RSA181295  Wyethia glabra John H. Thomas 1965-4-16 10568 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles SW of Palo Alto. NW end of Ridge. Comment
  CAS-BOT-BC383732  Xanthium strumarium John H. Thomas 1970-4-15 15579 Merced About 11 miles northeast of Gustine along highway 140 near Bridge 39-91 over slough near San Joaquin River Comment
  CAS-BOT-BC383792  Xanthium strumarium John H. Thomas 1956-9-8 6444 Santa Clara Stanford University Campus. Along Mayfield Ave. between Stanford Ave. and Frenchman's Road 15 Comment
  CAS-BOT-BC383797  Xanthium strumarium John H. Thomas 1955-7-9 5229 Santa Clara Dry bed of Lake Lagunita. Stanford University 30 Comment
  RSA140811  Xanthium strumarium John H. Thomas 1960-6-25 8790 San Mateo Redwood City. Along or near a small creek running into Redwood Slough between El Camino Real and railroad tracks, near Maple Street. 8 Comment
  JROH2557  Zeltnera muehlenbergii John H. Thomas 1974-8-11 17506 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2576  Zeltnera muehlenbergii John Hunter Thomas 1992-6-8 25371 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2578  Zeltnera muehlenbergii John Hunter Thomas 1992-7-24 25391 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB68059  Zigadenus Kathryn Thomas, Kathy Rindlaub 1993-3-7 SR- 39 Santa Barbara southern foothills of the San Rafael Range, Sedgwick Reserve - Slopes across from the upper ranch near USFS 731 Comment
  CAS-BOT-BC530586  Zigadenus fremontii John H. Thomas 1953-6-18 3408 Santa Cruz Along Empire Grade, 2 miles south of its intersection with Jamison Road 762 Comment
  CAS-BOT-BC531549  Zigadenus fremontii John H. Thomas 1958-2-15 6984 San Mateo Jasper Ridge, about 5 miles southwest of Palo Alto 182 Comment



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