Search Results — 2000 specimen records retrieved (1334 records with coordinates)
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Results for search: County=SAN MATEO; Source=All;   

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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
  SEINET946036  Abronia latifolia C. F. Baker 1902-1 1741 San Mateo Piller Point. Comment
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Nov 1 2021
  RSA0025967  Abronia umbellata L. S. Rose 1935-10-12 35654 San Mateo Salada. 3 Comment
  CAS-BOT-BC451115  Acaena pinnatifida var. californica John H. Thomas 1961-5-7 9254 San Mateo San Bruno Mountain in northern part of county. Northern Coastal Scrub of Munz and Keck. 396 Comment
  CAS-BOT-BC451116  Acaena pinnatifida var. californica A. D. E. Elmer 1903-4-1 4823 San Mateo San Bruno Hills Comment
  SJSU8181  Acaena pinnatifida var. californica S. H. Casey 1969-4-17 228 San Mateo Colma Canyon, San Bruno Mountain Comment
  UC764000  Acaena pinnatifida var. californica R. F. Hoover 1939-4-21 4053 San Mateo 2 mi. s. Colma Comment
  LA55133  Acanthomintha ilicifolia Harry A. Dutton; Harriet A. Walker 1915-5-29 3819 San Mateo near the Menlo Golf Club Comment
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Jul 30 2017
  RSA232565  Acanthomintha ilicifolia A. D. E. Elmer 1903-05 4538 San Mateo Crystal Springs Lake. Comment
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Jul 30 2017
  SEINET12276583  Acanthomintha ilicifolia L. S. Rose 1932-1 San Mateo Comment
  JROH155  Acer macrophyllum John H. Thomas 1971-4-25 15786 San Mateo Jasper Ridge Biological Preserve, Stanford University 92 Comment
  SEINET12234141  Acer macrophyllum Unknown 1932-1 8932 San Mateo La Honda Road Comment
  CAS-BOT-BC336919  Acer negundo var. californicum C. F. Baker 1902-4-6 472 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC336920  Acer negundo var. californicum George Oberlander 1949-4-30 117 San Mateo San Francisco Watershed Reserve, east boundry Comment
  CAS-BOT-BC336918  Acer negundo var. californicum Ira L. Wiggins 1925-4-11 1633 San Mateo Hillside across from Schroder's. One and one half miles about Stanford University. Comment
  CAS-BOT-BC21584  Achillea millefolium Fred Hemphill 1973-5-6 760 San Mateo San Carlos. North of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC21586  Achillea millefolium Fred Hemphill 1973-5-14 807 San Mateo San Carlos. North of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC21590  Achillea millefolium H. A. Dutton 1900-2-1 s.n. San Mateo Woodside Serpentine Comment
  CAS-BOT-BC28767  Achillea millefolium H. M. Hall 1923-10-26 847 -C San Mateo Collected live in Montara, planted in Stanford Gardens and later vouchered from there. 0 Comment
  CHSC67013  Achillea millefolium K. L. Chambers 1984-6-14 5139 San Mateo San Gregorio State Beach, Hwy. 1. On roadcut 100 ft. +/- above the ocean. Comment
  JEPS121480  Achillea millefolium Adam C. Schneider with C. Matt Guilliams 2013-4-7 94 San Mateo Crystal Springs Reservoir Comment
  UCR254762  Achillea millefolium Peter Rubtzoff 1977-6-21 9065 San Mateo San Francisco Bay Region, San Bruno Mountains, 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction 213 Comment
  SEINET10758616  Achillea millefolium Thomas B. Croat 1966-6-20 Croat 1997 San Mateo 1 mile N of Montara, sandy banks along Pacific. Comment
  UCD128300  Achillea millefolium Leslie Fenster 1964-3-22 15 San Mateo near Crystal Spring Lake. 152 Comment
  RSA18454  Achillea millefolium var. arenicola Carl B. Wolf 1927-6-29 s.n. San Mateo Along coast south of Pebble Beach near Pescadero. Comment
  JROH471  Achyrachaena mollis John Hunter Thomas 1982-5-18 20939 San Mateo Jasper Ridge Biological Preserve, Stanford University; old racing oval Comment
  JROH5888  Achyrachaena mollis Ruth Porter 1998-5-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2063  Acmispon americanus var. americanus John Hunter Thomas 1983-6-29 22720 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2069  Acmispon glaber var. glaber John H. Thomas 1970-7-5 15662 San Mateo Jasper Ridge Biological Preserve, Stanford University 152 Comment
  OBI12966  Acmispon glaber var. glaber Robert F. Hoover 1964-9-10 9290 San Mateo Devil's slide, between Pedro-Point and Montara Comment
  JROH2109  Acmispon strigosus John H. Thomas 1961-4-29 9193 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2082  Acmispon wrangelianus Daniel Cohen 1953-4-11 10 San Mateo Jasper Ridge Biological Preserve, Stanford University; on north shore of Searsville Lake Comment
  JROH2098  Acmispon wrangelianus John H. Thomas 1974-4-4 17078 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC391673  Actaea rubra A. D. E. Elmer 1903-5-1 4703 San Mateo Butano Creek Comment
  SEINET10573362  Actaea rubra Ernest A. McGregor McGregor s.n. San Mateo Santa Cruz Mountain Peninsula Comment
  POM56205  Adenocaulon bicolor A. D. E. Elmer 1903-06 s.n. San Mateo Pescadero Creek Comment
  CAS-BOT-BC139956  Adenostoma fasciculatum David D. Keck 1932-5-25 1781 San Mateo Hills two miles west of Belmont Comment
  RSA95821  Adenostoma fasciculatum var. fasciculatum L. S. Rose 1953-6-29 53045 San Mateo Emerald Lake, hills w. of Redwood City 91 Comment
  UC42051  Adiantum aleuticum F. P. McLean 1873-1 San Mateo Pescadero Comment
  CAS-BOT-BC65513  Adiantum aleuticum W. R. Dudley 1896-4-18 s.n. San Mateo Pescadero Creek, Santa Cruz Mts. Comment
  SD27376  Adiantum aleuticum Kate O. Sessions 1879-1 San Mateo La Honda Comment
  CAS-BOT-BC65671  Adiantum jordanii Margaret Barry 1937-5-15 139 San Mateo Coal Mine Ridge Comment
  JROH90  Adiantum jordanii John H. Thomas 1976-4-2 18077 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  UCSB18581  Adiantum jordanii Muirhead, M. 1964-4-17 San Mateo Crocker Estate, Hillsborough 91 Comment
  RSA0091004  Aeonium simsii Dean Wm. Taylor, Alison E. L. Colwell 2005-5-10 19306 San Mateo Pacifica, sea bluffs between Shelter Cove and Pacifica State Beach. 16 Comment
  JROH2709  Aesculus californica John H. Thomas 1974-5-29 17407 San Mateo Jasper Ridge Biological Preserve, Stanford University 92 Comment
  UCSB17806  Aesculus californica Schulte, John 1963-4-26 San Mateo Jasper Ridge, 3 miles SW of Stanford Campus, between Santa Clara Valley and Santa Cruz Mountains 137 Comment
  RSA18512  Agoseris grandiflora C. B. Wolf 1927-7-14 608 San Mateo Summit of Kings Mountain Rd. Comment
  CAS-BOT-BC22976  Agoseris grandiflora var. grandiflora David D. Keck 1932-5-6 1460 San Mateo Belmont Comment
  JROH483  Agoseris grandiflora var. grandiflora John H. Thomas 1974-5-29 17401 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC29378  Agoseris grandiflora var. grandiflora J. Burtt Davy Jun 21 1893-Jun 23 1893 1126 San Mateo Pilarcitos Lake and Canon Pilarcitos Lake and Canon Comment
  CAS-BOT-BC23018  Agoseris grandiflora var. grandiflora W. R. Dudley 1894-4-21 s.n. San Mateo San Mateo ravine Comment
  POM52211  Agoseris heterophylla C. F. Baker 1904-04 661 San Mateo Near Stanford University Comment
  JEPS82921  Agrostis blasdalei James A. West 1983-8-14 189 San Mateo exposed coastal bluffs ca 2 km s of the Pigeon Point Lighthouse, +/- overlooking Columbia Beach Comment
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Dec 20 2015
  SJSU15809  Agrostis blasdalei Toni Corelli 2016-7-25 1260 San Mateo Bean Hollow State Beach along Arroyo de los Frijoles Trail; bare area west and adjacent to designated trail 5 Comment
  UCSC008505  Agrostis blasdalei Randall Morgan 2013-5-24 5528 San Mateo Bean Hollow State Beach, about 100 m up trail from parking lot Comment
  CDA1702  Agrostis capillaris J. T. Howell 1975-9-25 51509 San Mateo San Bruno Mountain 0 Comment
  POM207320  Agrostis densiflora E. B. Copeland 1903-8-13 3308 San Mateo Montara Point. Comment
  UC143951  Agrostis densiflora Dr. E. B. Copeland 1903-8-13 3308 San Mateo Montara Point Comment
Read comments
Nov 29 2009
  JROH4781  Agrostis exarata W. R. Dudley 1903-1-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Lake Comment
  SJSU15956  Agrostis exarata John Rawlings, Ken Hickman 2016-5-26 1833 San Mateo Serpentine seep area up-slope from the Hwy 92 west onramp to Hwy 280 north; down-slope from San Francisco Watershed fence line 122 Comment
  CAS-BOT-BC139464  Agrostis hallii Walter Knight; Irja Knight 1965-6-20 s.n. San Mateo San Bruno Mountain. In Crystal Cave Canyon. Comment
  JROH4794  Agrostis hallii John Rawlings 2011-6-21 1085 San Mateo Jasper Ridge Biological Preserve, Stanford University; adjacent to Horse Trail in opening in chaparral a few hundred feet from Escobar Road 125 Comment
  JROH4792  Agrostis pallens John Rawlings 2010-6-23 1104 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along fenceline 150 yards downhill from Escobar Gate. 157 Comment
  SEINET7594107 Image available Agrostis pallens Henry E. Meser 1932-1 s. n. San Mateo Black Mountain Road, Hillborough Hills near Burlingame Comment
  JROH4824  Aira caryophyllea John H. Thomas 1966-4-22 11570 San Mateo Jasper Ridge Biological Preserve, Stanford University 170 Comment
  RSA145198  Aira caryophyllea John H. Thomas 1958-3-19 7050 San Mateo East facing slope of San Bruno Mountain, just north of South San Francisco 30 Comment
  UC1108514  Aira caryophyllea H. L. Mason 1921-5-29 San Mateo roadside near Arroyo de los Frijoles Comment
  CAS-BOT-BC138231  Aira caryophyllea var. caryophyllea Walter Knight; Irja Knight 1965-5-9 s.n. San Mateo San Bruno Mountain. Devil's Arroyo. Comment
  CAS-BOT-BC138232  Aira caryophyllea var. caryophyllea A. D. E. Elmer 1903-5-1 4705 San Mateo Crystal Springs Lake. Comment
  CAS-BOT-BC138237  Aira caryophyllea var. caryophyllea E. McClintock; Phillip Wheeler 1965-5-23 s.n. San Mateo San Bruno Mountain. Slope below Nike Station. Comment
  JROH4298  Alisma triviale L. R. Abrams 1917-10-9 6865 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Lake Comment
  JROH4303  Alisma triviale Carol Zabel 2006-4-19 56 San Mateo Jasper Ridge Biological Preserve, Stanford University; off first bridge on Trail 12 (end of Road E), northeast side of bridge Comment
  POM296481B  Alisma triviale Lyman Benson 1931-5-29 2810 San Mateo Santa Cruz Mt. range, Lake Searsville River. 244 Comment
  SEINET12049324  Allium amplectens H. L. Mason 1921-1 s.n. San Mateo Jasper Ridge Comment
  RSA310964  Allium dichlamydeum Robert F. Thorne, Percy C. Everett 1963-6-9 32236 San Mateo On top of San Bruno Mountain. 335 Comment
  JROH4550  Allium falcifolium John H. Thomas 1957-4-16 6662 San Mateo Jasper Ridge Biological Preserve, Stanford University. Open serpentine area on top of ridge and adjacent slopes Comment
  POM169881  Allium falcifolium A. D. E. Elmer 1903-06 4831 San Mateo Crystal Springs Lake. Comment
  JROH4555  Allium lacunosum var. lacunosum H. J. Dengler 1972-4-23 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. S.W. of '"road" on serpentine, and E. of Mimulus Gully, opp. oaks on sep., top of J.R. Comment
  CDA928  Allium peninsulare D. G. Kelch, B. G. Baldwin, Sue Bainbridge, Abigail Moore 2005-6-21 5 .366 San Mateo S.F. Water District land, near Spring Valley. NE corner Pilarcitos Lake. Comment
  CAS-BOT-BC132033  Allium peninsulare var. franciscanum A. D. E. Elmer 1903-6-1 4595 San Mateo San Mateo Comment
  JROH4564  Allium peninsulare var. franciscanum John H. Thomas 1968-5-22 14461 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4562  Allium triquetrum John Rawlings, Toni Corelli 2012-5-15 1122 San Mateo Jasper Ridge Biological Preserve, Stanford University. West bank of Bear Creek at its crossing of Road H near boundary fence. 82 Comment
  CAS-BOT-BC474304  Allium unifolium George Oberlander 1950-4-16 663 San Mateo Cahill Ridge Comment
  SEINET10919408  Alnus rubra LeRoy R. Abrams Abrams s.n. San Mateo Near Rescadero on road to Half-Moon Bay. Santa Cruz Mountain Peninsula. Comment
  UCD97767  Amaranthus retroflexus John Thomas Howell 1978-7-18 53187 San Mateo McClellan residence, 1356 Bernal Ave., Burlingame. Comment
  JEPS20296  Ambrosia chamissonis Lewis S. Rose 1956-8-13 56144 San Mateo Princeton 6 Comment
  RSA176781  Ambrosia chamissonis John H. Thomas 1963-7-19 10187 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz. Exposed rocks are Monterey shale. Comment
  UC579657  Ambrosia chamissonis N. K. Carlson 1935-7-5 120 San Mateo s of Pescadero; Santa Cruz Quadrangle, Bolsa Point 0 Comment
  CAS-BOT-BC44928  Ambrosia chamissonis Lewis S. Rose 1956-8-13 56144 San Mateo Princeton sand dunes 6 Comment
  RSA118964  Ambrosia chamissonis L. S. Rose 1956-8-13 56144 San Mateo San Mateo County, Princeton. 6 Comment
  RSA175131  Amelanchier pallida Robert F. Thorne 1963-6-9 32232 San Mateo On top of San Bruno Mountain on Kamchatka Point near the TV tower. 335 Comment
  CAS-BOT-BC136834  Amelanchier utahensis A. D. E. Elmer 1903-5-1 4659 San Mateo [Slates] Slate Creek (Pescadero) Comment
  CAS-BOT-BC214048  Amsinckia Lewis S. Rose 1933-5-17 33174 A San Mateo Redwood City Comment
  CAS-BOT-BC214049  Amsinckia James McMurphy 1906-3-10 s.n. San Mateo By stone crusher. Comment
  HSC3512  Amsinckia intermedia R. S. White 1965-3-17 4 San Mateo 3 mi. W of the Stanford Golf Course on Sand Hill Rd. Comment
  SEINET12280466  Amsinckia intermedia M. T. Doutt 1931-1 246 San Mateo S of San Francisco, near Salada Comment
  JROH1350  Amsinckia menziesii John Hunter Thomas 1987-4-4 24169 San Mateo Jasper Ridge Biological Preserve, Stanford University; below Searsville Dam Comment
  UC24623  Amsinckia spectabilis Alice Eastwood April 1896 San Mateo Crystal Springs Comment
  CHSC57069  Amsinckia spectabilis var. spectabilis Steven Triano 1988-5-24 213 San Mateo Located ca 750 ft s of Hwy. 1 and 2.9 mi s of Pigeon Point Light Station. 24 Comment
  CAS-BOT-BC45193  Anaphalis margaritacea Josephine D. Randall 1907-7-28 45 San Mateo Iverson's near Pescadero Creek Comment
  UC1125508  Anaphalis margaritacea G. E. Sindel 1935-7-22 294 San Mateo 1/4 mi s of Pescadero; Santa Cruz Quad. 30 Comment
  POM176875  Anemone grayi W. R. Dudley 1894-3-26 s.n. San Mateo Redwoods beyond King's Mt. House Comment
  UC634955  Anemone oregana Herbert L. Mason 1927-4-24 3698 San Mateo La Honda Comment
  CDA38223  Angelica hendersonii T. C. Fuller 1957-10-2 407 -57 San Mateo San Gregorio. 0 Comment
  RSA246844  Angelica hendersonii R. F. Thorne, P. Everett 1965-8-1 35077 San Mateo 21.5 miles S of Golden Gate Bridge. 69 Comment
  UC648294  Angelica hendersonii Alice Eastwood, John Thomas Howell 1939-7-9 7441 San Mateo e of La Honda (Skyline Boulevard); Skyline Boulevard Comment
  CAS-BOT-BC273178  Anisocarpus madioides Josephine D. Randall 1907-4-27 90 San Mateo Santa Cruz Peninsula. Kings Mt Road Comment
  CAS-BOT-BC273179  Anisocarpus madioides W. R. Dudley 1895-9-15 s.n. San Mateo Santa Cruz Mountain Peninsula. El Corte Madera Creek near Lumber Camp Comment
  JROH508  Anthemis cotula John Hunter Thomas 1982-7-2 21053 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low-flow crossing Comment
  CAS-BOT-BC280646  Anthoxanthum occidentale L. R. A. 1902-1-7 2258 San Mateo Kings Mountain Comment
  JROH197  Anthriscus caucalis John H. Thomas 1973-4-20 16580 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC454480  Aphanes occidentalis Elizabeth McClintock 1965-3-14 s.n. San Mateo South Power Line Ridge, San Bruno Mountain Comment
  CAS-BOT-BC454494  Aphanes occidentalis John H. Thomas 1971-5-2 15831 San Mateo Serpentine fields near intersection of Canada and Edgewater roads. About 4 miles SW of center of Redwood City. 304 Comment
  CAS-BOT-BC454502  Aphanes occidentalis J. H. Thomas 1963-1-27 10015 San Mateo Edge of grassland near westridge end of Jasper Ridge, Stanford University Biological Experimental Area. Comment
  UC306538  Apiastrum angustifolium A. D. E. Elmer June, 1903 4461 San Mateo southern end of Crystal Springs Lake Crystal Springs Lake Comment
  CAS-BOT-BC405897  Aquilegia formosa Everett O'Bannon; Nancy O'Bannon 1956-4-15 s.n. San Mateo Sawyer's Road, near Crystal Springs Lake above Burlingame and Millbrae Comment
  CAS-BOT-BC17318  Arabis blepharophylla Walter Knight; Irja Knight 1965-3-21 967 San Mateo San Bruno Mountains. On ridge near Brisbane power lines. Comment
  CAS-BOT-BC17329  Arabis blepharophylla A. D. E. Elmer 1903-4-1 4936 San Mateo Santa Cruz Peninsula. San Bruno Hills. Comment
  CAS-BOT-BC17335  Arabis blepharophylla Reed Clark Rollins 1941-3-22 2950 San Mateo San Bruno Hills, 2 miles southeast of Daly City. Comment
  CAS-BOT-BC17337  Arabis blepharophylla David D. Keck 1933-5-11 2304 San Mateo Montara Summit, Montara Mountain. Comment
  POM143334  Arabis blepharophylla A. D. E. Elmer 1903-04 4936 San Mateo San Bruno Hills Comment
  CAS-BOT-BC128627  Arbutus menziesii Josephine D. Randall 1907-4-27 136 San Mateo King's Mt. Road - Santa Cruz Peninsula Comment
  CAS-BOT-BC128668  Arbutus menziesii Elizabeth McClintock; Walter Knight; Irja Knight 1964-9-11 s.n. San Mateo South of Brisbane on side hill by Frontage Road - San Bruno Mountain Comment
  CAS-BOT-BC128669  Arbutus menziesii Phillip C. Wheeler 1965-5-25 s.n. San Mateo Brisbane Canyon - San Bruno Mountain Comment
  CAS-BOT-BC304414  Arbutus menziesii A. D. E. Elmer 1903-5-1 4515 San Mateo Searsville Lake Comment
  RSA112355  Arbutus menziesii W. R. Dudley 1893-2-18 s.n. San Mateo Searsville to La Honda. Comment
  CAS-BOT-BC24156  Arctostaphylos John H. Thomas 1967-2-9 12402 San Mateo Montara Mountain in Northern part of county. Between Pacifica and Montara. Comment
  UCD50392  Arctostaphylos andersonii Robert E. Preston 2001-5-29 1533 San Mateo Ca. 9 mi nnw of Boulder Creek. 377 Comment
  SEINET12001640  Arctostaphylos andersonii W. R. Dudley 1906-1 5 San Mateo Kings Mt., Santa Cruz Range, Santa Cruz Peninsula 610 Comment
  CAS-BOT-BC23514  Arctostaphylos crustacea John Thomas Howell 1931-1-18 5725 San Mateo King Mt. Comment
  CAS-BOT-BC23516  Arctostaphylos crustacea John Thomas Howell 1924-2-23 259 San Mateo King Mt. Comment
  RSA26358  Arctostaphylos crustacea E. K. Balls, Percy C. Everett 1953-10-16 18682 San Mateo Hwy 5, 30.8 mi SE of San Francisco-San Mateo Co. line. 762 Comment
  CAS-BOT-BC25169  Arctostaphylos crustacea subsp. crinita Roman Gankin 1966-5-17 739 San Mateo ca. 0.4 mile NE of Peak Mountain of Montara Mountain Range 487 Comment
  JROH1927  Arctostaphylos crustacea subsp. crustacea Mrs. S. H. Babcock 1895-2-23 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Comment
  JROH1937  Arctostaphylos crustacea subsp. crustacea John Rawlings 2008-1-30 0930 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near ridgetop north of Trail b (start uphill from trail b at first serpentine contact). 162 Comment
  JROH5766  Arctostaphylos crustacea subsp. crustacea John Rawlings 2016-11-14 1952 San Mateo Jasper Ridge Biological Preserve, Stanford University; about 120 yards north of Road F opposite its intersection with Trail 17 to Goya Gate 178 Comment
  SEINET11988203  Arctostaphylos glandulosa W. Knight, Raiche, R. 1982-1 4416 San Mateo San Bruno Mountain, up Buckeye Canyon on Oak Ridge 91 Comment
  SEINET11988205  Arctostaphylos glandulosa W. Knight, Raiche, R. 1982-1 4420 San Mateo San Bruno Mountain, Buckeye Canyon on Oak Ridge 102 Comment
  SEINET11988217  Arctostaphylos glandulosa W. Knight, Raiche, R. 1982-1 4419 San Mateo San Bruno Mountain, Buckeye Canyon on Oak Ridge 122 Comment
  SEINET11988234  Arctostaphylos glandulosa W. Knight, Raiche, R. 1982-1 4417 San Mateo San Bruno Mountain, Buckeye Canyon on Oak Ridge 137 Comment
  CAS-BOT-BC24731  Arctostaphylos glandulosa subsp. glandulosa Walter Knight; Roger Raiche 1982-1-23 4417 San Mateo San Bruno Mtn. Buckeye Canyon on Oak Ridge. 137 Comment
  CAS-BOT-BC24482  Arctostaphylos imbricata R. F. Hoover 1964-4-24 8742 San Mateo San Bruno Mt., n. side near summit. Comment
  CAS-BOT-BC24495  Arctostaphylos imbricata Peter H. Raven 1950-2-25 1383 San Mateo W. end of ridge behind NBC station, San Bruno Mtns. 457 Comment
  CAS-BOT-BC24497  Arctostaphylos imbricata Peter H. Raven 1950-2-25 1383 San Mateo W. end of ridge behind NBC station, San Bruno Mtns. 457 Comment
  CAS-BOT-BC27193  Arctostaphylos imbricata Marion L. Campbell 1915-2-15 s.n. San Mateo San Bruno hills Comment
  RSA128344  Arctostaphylos imbricata P. H. Raven 1951-2-18 2733 San Mateo summit ridge of the San Bruno Mountains, topotype, endemic Comment
  RSA166365  Arctostaphylos imbricata R. F. Thorne, Percy C. Everett, K. Thorne 1963-6-9 322256 San Mateo On top of San Bruno Mt. Near the TV tower 335 Comment
  UC1137193  Arctostaphylos imbricata G. Ward 1940-8-5 San Mateo San Bruno Mt. San Mateo Quadrangle Comment
  UCR58357  Arctostaphylos imbricata Walter Knight, I. Knight 1980-6-14 3747 San Mateo Original from San Bruno Mt. (grown at Tilden Botanic Garden, Berkeley) Comment
  POM131959  Arctostaphylos manzanita subsp. manzanita Stewart H. Burnham 1894-1 6565 San Mateo Above Searsville. Comment
  UCD166092  Arctostaphylos montaraensis Mike Vasey 2016-3-10 s.n. San Mateo North end of Montara Mtn on Brooks Cr. Tr., ca 1 mi. from trailhead, San Pedro County Park. 121 Comment
  CAS-BOT-BC44705  Arctostaphylos regismontana Lewis S. Rose 1932-1-16 3214 San Mateo Kings Mountain 640 Comment
  CAS-BOT-BC44707  Arctostaphylos regismontana Walter Knight; Irja Knight 1964-9-14 846 San Mateo On Peak Mt. 304 Comment
  POM285164  Arctostaphylos regismontana Lyman Benson 1929-3-5 975 San Mateo Summit of Kings Mountain 762 Comment
  UC1120833  Arctostaphylos regismontana A. E. Wieslander and B. O. Schreiber 1940-3-5 2 San Mateo road from Woodside to King's Mt.; Santa Cruz Quadrangle 243 Comment
  UC1120845  Arctostaphylos regismontana C. M. Belshaw 1935-1-25 1467 San Mateo KIngs Mt. Rd. 6 mi w Woodside; Santa Cruz Quadrangle Comment
  UC876529  Arctostaphylos regismontana Lewis S. Rose 1934-2-10 34026 San Mateo Skyline Blvd 4 mi s Kings Mountain (region of type) Comment
  SEINET3410747 Image available Arctostaphylos sensitiva Lewis S. Rose 1931-4-4 s.n. San Mateo Kings Mountain, San Mateo County, California. Comment
  JEPS101965  Arctostaphylos tomentosa subsp. crustacea Dean W. Taylor 1997-2-12 15906 San Mateo Kings Peak Road; Santa Cruz Mountains, Kings Mtn., on road to archery area under high-voltage, steel-tower eletrical transmission line 533 Comment
  POM132204  Arctostaphylos tomentosa subsp. crustacea A. D. E. Elmer 1903-05 4558 San Mateo Kings Mountain. Comment
  POM299443  Arctostaphylos tomentosa subsp. crustacea L. S. Rose 1942-3-30 42007 San Mateo Kings Mountain. 183 Comment
  RSA636840  Arctostaphylos tomentosa subsp. crustacea Jon E. Keeley, Melanie Baer-Keeley 1993-9-8 24652 San Mateo NW side of Montara Mtn. 150 Comment
  RSA636845  Arctostaphylos tomentosa subsp. crustacea Jon E. Keeley, Melanie Baer-Keeley 1993-9-8 24645 San Mateo NW side of Montara Mtn. 150 Comment
  SEINET11988249  Arctostaphylos tomentosa var. tomentosiformis Unknown 1959-1 325 San Mateo 1.2 mi from junction CA 5 on King's Mt. Road Comment
  SJSU6081  Arctostaphylos uva-ursi S. H. Casey 1969-5-18 256 San Mateo near summit of San Bruno Mt Comment
  UCD52147  Arctostaphylos uva-ursi Walter and Irja Knight; Elizabeth McClintock 1982-3-27 4495 San Mateo From Kamchatka Point, San Bruno Mountain, San Mateo County. 320 Comment
  CAS-BOT-BC27300  Arctostaphylos uva-ursi var. suborbiculata W. Knight; Irja Knight; Elizabeth McClintock 1981-7-3 4492 San Mateo Kamchatka Point, San Bruno Mountain Comment
  SEINET11987154  Arctostaphylos uva-ursi var. suborbiculata W. Knight, Knight, I. 1981-1 4054 San Mateo Tilden Botanic Garden, Berkeley, orig. from Kamchatka Point, San Bruno Mountain Comment
  SEINET11989207  Arctostaphylos uva-ursi var. suborbiculata E. McClintock, Knight, W.; Knight, I. 1982-1 4636 San Mateo Kamchatka Point, San Bruno Mountains Comment
  CAS-BOT-BC47702  Armeria maritima subsp. californica Adele Lewis Grant 1917-5-6 940 San Mateo Pebble Beach near Pescadero Comment
  JROH513  Artemisia biennis Roxana S. Ferris 1924-10-6 4096 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Lake on Portola Highway Comment
  JEPS44413  Artemisia douglasiana Lewis S. Rose 1965-9-4 65101 San Mateo Skyline Blvd and Half Moon Bay Road Cahill Ridge, Skyline Blvd and Half Moon Bay Road 243 Comment
  OBI17042  Artemisia douglasiana Lewis S. Rose 1965-9-4 65101 San Mateo Skyline Blvd & Half Moon Bay rd, Cahill ridge 244 Comment
  CAS-BOT-BC389674  Arthrocnemum subterminale Maryann Danielson 1969-8-11 s.n. San Mateo South of Coyote Point Comment
  POM165704  Asarum caudatum A. D. E. Elmer 1903-06 s.n. San Mateo Butano Creek Comment
  UC141855  Asarum caudatum Dr. E. B. Copeland 1903-5-9 3250 San Mateo Mountains beyond Pescadero Creek 304 Comment
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Oct 16 2021
  JROH428  Asclepias fascicularis Richard L. Garber 1971-7-13 57 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH432  Asclepias fascicularis John H. Thomas 1974-6-27 17444 San Mateo Jasper Ridge Biological Preserve, Stanford University 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
  UCR254764  Aster chilensis Peter Rubtzoff, Roman Gankin 1975-9-11 8377 San Mateo San Bruno Mountains, 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction 213 Comment
  CAS-BOT-BC478065  Asteraceae H. A. Dutton 1900-5-6 s.n. San Mateo Santa Cruz Mountain Peninsula, Woodside Comment
  CAS-BOT-BC186761  Astragalus gambelianus Deborah Hichborn 1920-4-19 s.n. San Mateo Woodside Comment
  CAS-BOT-BC186762  Astragalus gambelianus John H. Thomas 1971-5-2 15822 San Mateo Near intersection of Canada Road and Edgewater Road, about three miles westward from Redwood City 152 Comment
  CAS-BOT-BC186767  Astragalus gambelianus James McMurphy 1906-5-8 s.n. San Mateo Head of Crystal Springs Lake Comment
  JROH1993  Astragalus gambelianus John Hunter Thomas 1981-4-23 20480 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC903415  Astragalus gambelianus Lois E. James 1946-4-16 1740 San Mateo high road off Woodside Road hill back Redwood City; hills back of Redwood City Comment
  RSA60160  Astragalus gambelianus Lois E. James 1947-4-11 1757 San Mateo Hills back of Redwood City. Comment
  JEPS88673  Astragalus nuttallii Dean W. Taylor 1990-8-7 11418 San Mateo along Highway 1, 1.6 mi s Pomponoe State Beach (Santa Cruz Mountains); , s of Pomponoe State Beach 60 Comment
  CAS-BOT-BC177974  Astragalus nuttallii var. virgatus C. F. Leitholdt 1894-7-1 s.n. San Mateo Pescadero Comment
  CAS-BOT-BC194430  Astragalus nuttallii var. virgatus Copeland 1905-6-3 3299 San Mateo Montara Pt. Comment
  SD40165  Astragalus nuttallii var. virgatus Edith A. Purer 1933-7-27 5356 San Mateo High stabilized sand dunes, Pigeon Point. Comment
  UC13465  Astragalus pycnostachyus var. pycnostachyus J. W. Congdon 1897-8-11 San Mateo San Gregorio <?> Comment
  HSC24025  Asyneuma prenanthoides Mary Katherine Wicksten 1971-7-7 155 San Mateo Huddart Park, along road to family campground. Comment
  CAS-BOT-BC66141  Athyrium filix-femina var. cyclosorum W. R. Dudley 1895-6-6 s.n. San Mateo near Pescadero Creek, Santa Cruz Mts. Comment
  POM143746  Athysanus pusillus C. F. Baker 1902-4-6 456 San Mateo Crystal Springs Lake. Comment
  RSA478328  Atriplex leucophylla E. A. Purer 1933-7-27 5349 San Mateo Pigeon Point. Comment
  SEINET3409822 Image available Atriplex leucophylla Lewis S. Rose 1933-7-20 33305 San Mateo Sea beach, Granada, San Mateo County, California. Comment
  JEPS128391  Avena barbata Adam C. Schneider 2013-5-17 147 San Mateo Crystal Springs Reservoir. Comment
  SEINET3919671  Avena fatua var. glabrata K. Allred 1975-1-3 1269 San Mateo Half Moon Bay. Along access road to Dune Beach.; 0 Comment
  CAS-BOT-BC98695  Baccharis douglasii Josephine D. Randall 1907-7-23 57 San Mateo Near Crystal Springs Lake - Santa Cruz Peninsula Comment
  CAS-BOT-BC98697  Baccharis douglasii W. R. Dudley 1893-12-8 s.n. San Mateo Mouth of San Francisquito Creek - Santa Cruz Mountain Peninsula Comment
  CAS-BOT-BC99513  Baccharis pilularis L. R. Abrams 1914-10-14 5137 San Mateo Tunitas Comment
  CAS-BOT-BC99524  Baccharis pilularis W. R. Dudley 1894-12-13 s.n. San Mateo above Preston's, La Honda Road Comment
  CAS-BOT-BC99526  Baccharis pilularis Fred Hemphill 1973-4-22 792 San Mateo San Carlos, area north of Malabar Rd. and Melendy Dr. 207 Comment
  RSA128829  Baccharis pilularis W. R. Dudley 1894-12-13 s.n. San Mateo Above Preston's, La Honda Road Comment
  UC10249  Barbarea orthoceras J. Burtt Davy June 21-23, 1893 1147 San Mateo Pilarcitos Lake and Canon Comment
  JROH3931  Bellardia trixago Toni Corelli 2004-4-22 272 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail 9 between trail c and trail 10 on both sides of trail 190 Comment
  SD227899  Bellardia trixago G. K. Helmkamp, E. A. Helmkamp 1998-5-16 3737 San Mateo Portola Valley: Golden Hills Rd along Los Trancos Creek. 106 Comment
  CAS-BOT-BC100195  Bellis perennis George Oberlander 1950-5-6 864 San Mateo on South Cahill Ridge Comment
  RSA681564  Berberis nevinii Annuschka Deb 1989-7-14 287 San Mateo YBN Demonstration Garden. (Yerba Buena Nursery) Comment
  CAS-BOT-BC75872  Berberis pinnata Alice Eastwood 1913-2-22 s.n. San Mateo San Bruno Hills. Comment
  CAS-BOT-BC75878  Berberis pinnata John H. Thomas 1977-3-26 18506 San Mateo Butano State Park, redwood region. Comment
  JROH1320  Berberis pinnata subsp. pinnata H. B. Hannibal 1910-10-10 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; Sandstone Cave Comment
  CDA3006  Beta vulgaris E. L. Labadie 1961-10-24 San Mateo Railroad tracks at Chestnut Street, Redwood City. 0 Comment
  UC1191357  Beta vulgaris Malcolm A. Nobs and S. Galen Smith 1949-8-27 1620 San Mateo salt marshes e Redwood City; salt marshes e of Redwood City Comment
  CAS-BOT-BC100316  Blennosperma nanum var. robustum Walter Knight; Irja Knight 1965-4-25 1043 San Mateo Owl's Canyon Comment
  RSA465627  Boisduvalia densiflora var. densiflora L. S. Rose 1942-8-11 42228 San Mateo Hills east of Sharps Park 91 Comment
  JROH4849  Brachypodium distachyon Herb Dengler 1977-6-4 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. West of Searsville Lake above beach Comment
  JROH4852  Brachypodium distachyon John Hunter Thomas 1986-6-7 24089 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4854  Brachypodium distachyon W. Lennihan 1980-5-19 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; eastern draw trail to San Francisquito Creek, about 1/3rd way down Comment
  UCD57119  Brachypodium distachyon Peter H. Raven 1957-6-30 11015 San Mateo 1.8 miles east of Pescadero on road to La Honda. Comment
  JEPS26851  Brassica nigra Rimo Bacigalupi with J. H. Thomas and L. R. Heckard 1961-5-23 7714 San Mateo along Alpine Road near site of abandoned Alpine School Alpine School; Alpine Road 487 Comment
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Mar 12 2009
  CAS-BOT-BC36790  Brassica rapa D. D. Davis 1903-3-1 s.n. San Mateo Dennis Martin Place. Comment
  UCD114806  Brassica rapa W. A. Harvey; J. M. Tucker 1948-6-28 1699 San Mateo ca. 3 miles north of Pescadero. Comment
  CAS-BOT-BC145492  Briza maxima Elizabeth McClintock; Paul Reeberg 1988-4-15 s.n. San Mateo San Bruno Mountains. East of Powerline and south of Guadalupe Canyon Parkway. 99 Comment
  UCD57161  Briza maxima S. S. Tillett; I. Sternback 1956-6-25 551 San Mateo Skyline Drive. 487 Comment
  CAS-BOT-BC145327  Briza minor Copeland 1903-5-24 3257 San Mateo Above Crystal Springs Lake. Comment
  UC37548  Briza minor J. Burtt Davy 1895-4-20 1033 San Mateo Lake San Andreas Comment
  SD631  Brodiaea coronaria Ulysses S. Grant IV 1925-6-10 San Mateo Hillsborough. Comment
  SEINET3884835  Brodiaea coronaria var. macropoda Lewis S. Rose 1970-4-8 70024 San Mateo Black Mountain W. of San Mateo.; 0 122 Comment
  CAS-BOT-BC484344  Brodiaea elegans subsp. elegans Cherie Wetzel 1969-6-20 867 San Mateo Canada College, Redrood City, just off of Farm Hill Blvd. Comment
  CAS-BOT-BC484351  Brodiaea elegans subsp. elegans W. R. Dudley 1893-5-27 s.n. San Mateo By Arey's residence near Stanford University Comment
  CAS-BOT-BC484352  Brodiaea elegans subsp. elegans F. H. Lamb 1895-6-14 s.n. San Mateo Along San Francis into Creek near St. Michael's Church Comment
  CAS-BOT-BC483185  Brodiaea terrestris subsp. terrestris Philip C. Wheeler 1965-5-25 s.n. San Mateo Brisbane Ridge, south of power lines, San Bruno Mountain Comment
  CAS-BOT-BC483186  Brodiaea terrestris subsp. terrestris Philip C. Wheeler 1965-6-19 s.n. San Mateo Fire trail west of quarry, San Bruno Mountain Comment
  JROH4589  Brodiaea terrestris subsp. terrestris John H. Thomas 1974-4-25 17201 San Mateo Jasper Ridge Biological Preserve, Stanford University. Serpentine grasslands on top of ridge. Comment
  CAS-BOT-BC144137  Bromus John H. Thomas 1965-4-29 10619 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC149396  Bromus berteroanus Richard Hobbs 1982-4-23 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University, about 5 miles SW of the downtown section of Palo Alto. The Preserve consists of about 1400 acres. This from Area C Comment
  CDA7725  Bromus carinatus D. G. Kelch 2002-5-13 s.n. San Mateo Cahill Ridge. 0 Comment
  SEINET3128654  Bromus carinatus L. R. Abrams 1902-5-11 2462 San Mateo Carplot Springs Comment
  UCD58232  Bromus carinatus Lewis S. Rose 1956-5-7 56069 San Mateo Skyline Blvd. W of San Mateo. 182 Comment
  CAS-BOT-BC148768  Bromus carinatus var. marginatus Catherine A. Toschi 1963-2-23 63 :29 San Mateo North slope San Bruno Mountains above Crocker Avenue. 152 Comment
  CAS-BOT-BC148769  Bromus carinatus var. marginatus Elizabeth McClintock; Paul Reeberg 1989-5-23 s.n. San Mateo San Bruno Mountains. In valley west of Guadlupe Hills. 76 Comment
  RSA120971  Bromus catharticus J. T. Howell 1956-5-23 31446 San Mateo Roadside, El Camino Real at Atherton Ave., Menlo Park. Comment
  CAS-BOT-BC155726  Bromus diandrus Javier Penalosa 1963-3-30 2765 a San Mateo San Bruno Mountains. Guadalupe Valley. 30 Comment
  CAS-BOT-BC210145  Bromus diandrus Peter Rubtzoff 1977-6-21 9056 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. East Fork Colma Creek Canyon area. Comment
  CAS-BOT-BC155133  Bromus hordeaceus W. R. Dudley 1899-5-14 s.n. San Mateo Santa Cruz Mountain Peninsula. Top of Sneath's Ranch Hill near Millbrae. Comment
  JROH4921  Bromus hordeaceus John H. Thomas 1974-4-19 17163 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4928  Bromus hordeaceus Winkie Lennihan 1990-4-4 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; along north side of Rd. F in grassy area east of the serpentine contact 161 Comment
  RSA128662  Bromus hordeaceus P. H. Raven 1950-6-3 2208 San Mateo along Millbrae Ave., Millbrae. 61 Comment
  JROH4938  Bromus laevipes W. Lennihan 1990-4-20 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Eastern draw, 40 yards down. Comment
  CAS-BOT-BC162308  Bromus madritensis George Oberlander 1950-5-6 766 San Mateo San Francisco Watershed Reserve. Lower Crystal Springs Lake. Comment
  CAS-BOT-BC162309  Bromus madritensis Paul Arnaud 1941-4-17 s.n. San Mateo Redwood City, Jefferson Avenue. Comment
  JROH4951  Bromus madritensis subsp. rubens John Hunter Thomas 1989-5-11 24740 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4958  Bromus madritensis subsp. rubens John Rawlings 2013-4-30 1181 B San Mateo Jasper Ridge Biological Preserve, Stanford University; along Road B near south boundary fence 78 Comment
  SEINET10966609  Bromus marginatus Edwin B. Copel 1903-6-10 Copeland 3303 San Mateo Montana Point. Comment
  RSA523926  Bromus maritimus G. H. True 1937-4-3 621 San Mateo Near coast north of Salada Beach. 15 Comment
  SEINET10523819  Bromus rigidus Delzie Demaree 1932-4-27 Demaree 9021 San Mateo Mud lakes, Los Francos Woods. Comment
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Nov 1 2021
  RSA185010  Bromus stamineus L. S. Rose 1963-4-27 63002 San Mateo Skyline Blvd, open hills, west of San Mateo 91 Comment
  JROH4970  Bromus vulgaris W. H. Lennihan 1989-6-22 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. San Francisquito Creek trail. Comment
  CHSC22764  Cakile edentula Robert A. Schlising; Glenn Keator 1962-2-3 2048 San Mateo Coast Ranges. Along area at Gazos Creek and Highway 1. Comment
  CAS-BOT-BC36872  Cakile edentula var. edentula W. R. Dudley 1897-10-10 s.n. San Mateo Near Pilar Point. Comment
  CAS-BOT-BC36947  Cakile maritima var. maritima J. H. Thomas 1949-6-4 577 San Mateo 1.4 miles south of road to Pescadero. Comment
  CAS-BOT-BC185144  Calamagrostis nutkaensis H. L. Mason 1921-5-29 s.n. San Mateo Near Arroyo de Las Frijoles. Comment
  CAS-BOT-BC185151  Calamagrostis nutkaensis A. D. E. Elmer 1903-6-1 4693 San Mateo San Pedro. Comment
  CAS-BOT-BC185152  Calamagrostis nutkaensis A. D. E. Elmer 1903-6-1 4693 San Mateo San Pedro. Comment
  HSC9414  Calamagrostis nutkaensis C. B. Wolf 1927-6-4 San Mateo S of Pescadero Comment
  JROH5602  Calamagrostis rubescens John Rawlings 2014-3-18 1208 San Mateo Jasper Ridge Biological Preserve, Stanford University; near jct of and between trails 5 and 2. 83 Comment
  CAS-BOT-BC233998  Calandrinia breweri Fred Hemphill 1973-4-15 687 San Mateo North of Malabar Road and Melendy Drive, San Carlos 207 Comment
  CAS-BOT-BC438534  Calandrinia ciliata Catherine A. Toschi 1963-2-23 63 :36 San Mateo North slope San Bruno Mountains above Crocker Avenue 152 Comment
  CHSC39803  Calandrinia ciliata Maibelle Williams 1929-5-10 San Mateo Moss Beach. Comment
  CAS-BOT-BC167301  California macrophylla W. R. Dudley 1896-4-17 s.n. San Mateo Pescadero Comment
  JROH4613  Calochortus albus John Hunter Thomas 1991-4-25 25004 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA130402  Calochortus albus Le Roy Abrams 1914-05 5224 San Mateo Searsville Reservoir. Comment
  UC13852  Calochortus albus W. C. Blasdale 1893-6-23 San Mateo San Mateo Comment
  UCR101611  Calochortus albus George K. Helmkamp, E. A. Helmkamp 1998-5-16 3748 San Mateo Portola Valley, Golden Hills Rd along Los Trancos Creek 107 Comment
  CAS-BOT-BC492211  Calochortus albus John H. Thomas 1971-5-2 15859 San Mateo Serpentine fields bordered by chaparral, near intersection of Canada and Edgewater roads. About 4 miles SW of center of Redwood City. 304 Comment
  CAS-BOT-BC492212  Calochortus albus Ned Cahill 1974-5-13 270 San Mateo Chaparral near the intersection of Canda and Edgewood rods, about 3 mi westward from Redwood City. Comment
  CAS-BOT-BC492217  Calochortus albus Eric Walther 1919-6-9 s.n. San Mateo Woodside Comment
  CAS-BOT-BC492223  Calochortus albus Elsie Zeile 1909-5-20 s.n. San Mateo Burlingame Comment
  SEINET12045792  Calochortus albus L. S. Rose 1935-1 35214 San Mateo 9 mi W of Stanford University Comment
  JROH4619  Calochortus argillosus John H. Thomas 1962-5-31 9893 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4637  Calochortus luteus John Hunter Thomas 1981-5-25 20628 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC493994  Calochortus tolmiei Josephine D. Randall 1907-4-27 225 San Mateo Kings Mt.; Santa Cruz Peninsula Comment
  CAS-BOT-BC496826  Calochortus tolmiei W. R. Dudley 1895-6-6 s.n. San Mateo Woods near Pescadero Creek Comment
  CAS-BOT-BC496830  Calochortus tolmiei David D. Keck 1932-5-11 1496 San Mateo Above Woodside on La Honda road, east slope of Santa Cruz Mtn. Comment
  CAS-BOT-BC132539  Calochortus umbellatus M N. Paulson 1915-4-10 s.n. San Mateo Kings Mountain Comment
  CAS-BOT-BC270667  Calycadenia multiglandulosa L. S. Rose 1941-6-12 41268 San Mateo W of Redwood City, Emerald Lake 120 Comment
  JROH560  Calycadenia multiglandulosa Duncan M. Porter 1960-10-12 728 San Mateo Jasper Ridge Biological Preserve, Stanford University; SW edge of main meadow next to chaparral (near area C) Comment
  JROH564  Calycadenia multiglandulosa D. E. Breedlove 1971-5-31 19387 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  JROH572  Calycadenia multiglandulosa John Hunter Thomas 1986-6-9 24094 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH575  Calycadenia multiglandulosa John Hunter Thomas 1988-8-21 24563 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET5781153 Image available Calycadenia multiglandulosa L. S. Rose 1941-6-12 41268 San Mateo W of Redwood City, Emerald Lake Comment
  UCR70789  Calycadenia multiglandulosa L. S. Rose 1934-5-23 34278 San Mateo Emerald Lake. 160 Comment
  POM204003  Calycadenia multiglandulosa subsp. cephalotes L. S. Rose 1934-5-23 34278 San Mateo Emerald Lake. Comment
  SEINET11836279  Calycadenia multiglandulosa subsp. cephalotes L. S. Rose 1936-1 s.n. San Mateo Emerald Lake, W of Redwood City 91 Comment
  RSA124773  Calycadenia multiglandulosa subsp. robusta John H. Thomas 1958-11-22 7506 San Mateo Jasper Ridge, about 5 miles SW of Palo Alto 152 Comment
  RSA81618  Calycadenia multiglandulosa subsp. robusta James I. McMurphy 1909-6-7 s.n. San Mateo Jasper Ridge Comment
  CAS-BOT-BC436446  Calystegia occidentalis Phillip C. Wheeler 1965-6-16 s.n. San Mateo San Bruno Mountain, Colma Canyon east Comment
  CAS-BOT-BC224651  Calystegia purpurata subsp. purpurata Lewis S. Rose 1950-5-20 50141 San Mateo Emerald Lake region, hills w. of Redwood City 243 Comment
  CAS-BOT-BC224652  Calystegia purpurata subsp. purpurata Philip Wheeler 1965-6-16 s.n. San Mateo San Bruno Mountain. Colma Canyon Comment
  CAS-BOT-BC224657  Calystegia purpurata subsp. purpurata W. R. Dudley 1894-4-21 s.n. San Mateo Santa Cruz Peninsula. Near San Mateo Creek road Comment
  SD38402  Calystegia subacaulis Edith A. Purer 1933-5-30 3641 San Mateo Spring Valley Lakes. Comment
  POM171567  Camissonia cheiranthifolia subsp. cheiranthifolia R. L. Pendleton 1907-4-20 586 San Mateo Lake Merced 30 Comment
  POM187504  Camissonia cheiranthifolia subsp. cheiranthifolia E. A. Purer 1933-7-27 5388 San Mateo 2 miles south of Pigeon Point. Comment
  POM271979  Camissonia cheiranthifolia subsp. cheiranthifolia Lyman Benson 1930-8-15 2566 San Mateo San Gregorio Comment
  RSA130597  Camissonia ovata Lucile Roush 1918-3-31 s.n. San Mateo Santa Cruz Peninsula; foot of Sierra Morena Comment
  UC20548  Camissonia strigulosa Ivar Tidestrom May, 1894 San Mateo Comment
  CAS-BOT-BC160320  Camissoniopsis cheiranthifolia subsp. cheiranthifolia E. M. Zeile 1921-7-31 s.n. San Mateo Salada Comment
  UCSC007726  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  SEINET10463045  Campanula prenanthoides Randall 1907-6-29 RANDALL 17 San Mateo King's Mountain Road Comment
  SEINET10463147  Campanula prenanthoides Leithold LEITHOLD s.n. San Mateo PESCADERO Comment
  SEINET10840327  Campanula prenanthoides Leithold 1894-7-28 LEITHOLD s.n. San Mateo LA HONDA ROAD Comment
  SEINET10939009  Campanula prenanthoides William R. Dudley 1894-7-7 Dudley s.n. San Mateo Bear Gulch Comment
  JROH1479  Capsella bursa-pastoris John Hunter Thomas 1987-5-19 24290 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  CAS-BOT-BC37667  Cardamine californica LeRoy Abrams 1902-3-16 2274 San Mateo Kings Mountain Road. Comment
  CAS-BOT-BC37673  Cardamine californica John H. Thomas 1958-2-15 6982 San Mateo Jasper Ridge, about 5 miles southwest of Palo Alto. 182 Comment
  CAS-BOT-BC37685  Cardamine californica David D. Keck 1393 San Mateo Santa Cruz Mountains. La Honda road above Searsville Lake. Comment
  CAS-BOT-BC37687  Cardamine californica Lewis S. Rose 1936-3-11 36021 San Mateo Kings Mountain. 304 Comment
  JROH1481  Cardamine californica D. D. Davis 1903-4-5 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Ridge Comment
  CAS-BOT-BC37665  Cardamine californica Elizabeth McClintock 1972-4-23 s.n. San Mateo San Bruno Mountains. Above Fern Rock. Comment
  CHSC56974  Cardamine californica var. integrifolia Steven Triano 1988-5-24 184 San Mateo Redwood forest ca 0.1 mi w of Old La Honda Road near Martin Creek and 0.4 air miles e of SkyLonda. 381 Comment
  UC10443  Cardamine californica var. sinuata J. Burtt Davy 1895-4-20 1063 San Mateo Pilarcitos Creek Comment
  CDA3669  Cardamine hirsuta Wm. Davis 1958-3-26 187 -58 San Mateo El Camino Real, San Mateo. 0 Comment
  SEINET12004998  Cardamine integrifolia G. A. McCallum 1933-1 s.n. San Mateo back of Stanford Campus Comment
  JROH1488  Cardamine oligosperma Le Roy Abrams 1902-4-5 2308 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Comment
  JROH1492  Cardamine oligosperma John H. Thomas 1968-3-17 14182 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1494  Cardamine oligosperma John H. Thomas 1979-4-8 19447 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM202951  Cardamine oligosperma Alice Eastwood 1933-4-30 s.n. San Mateo Lake Pilarcitos. Comment
  CAS-BOT-BC37976  Cardamine oligosperma Walter Knight; Irja Knight 1965-3-21 959 San Mateo San Bruno Mountain. Ramanzoffia Ravine. Comment
  CDA6871  Carduus pycnocephalus Wm. Davis 1962-4-24 San Mateo Gorman Hay Barn, Tanforan Race Track, San Bruno. 0 Comment
  CAS-BOT-BC17848  Carex amplifolia Hester R. Davis 1920-5-18 s.n. San Mateo The Santa Cruz Mountain Peninsula. Kings Mountain. Comment
  JROH4322  Carex bolanderi Toni Corelli 2005-8-10 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Along Causeway, Trail 13, west of Leonard's Bridge. 106 Comment
  SBBG39550  Carex brevicaulis J. T. Howell 1965-3-29 41035 San Mateo W end of summit ridge of San Bruno Mtn 396 Comment
  CAS-BOT-BC18923  Carex densa John Thomas Howell 1938-5-1 13781 San Mateo Near South San Francisco. Comment
  CAS-BOT-BC18930  Carex densa LeRoy Abrams 1902-5-11 2444 San Mateo Crystal Springs. Comment
  JROH4334  Carex densa John Rawlings, Carol Zabel 2005-6-13 0902 San Mateo Jasper Ridge Biological Preserve, Stanford University. Edge of Trail 1 (creek side) before entering wooded area and Santa Barbara sedge area walking downstream. 87 Comment
  UC824431  Carex densa Lewis S. Rose 1935-5-4 35152 San Mateo Skyline Blvd. w San Bruno; Skyline Blvd. Comment
  CAS-BOT-BC227875  Carex densa Elizabeth McClintock; Paul Reeberg 1989-4-11 s.n. San Mateo San Bruno Mountains. In lower Randoph Ravine 53 Comment
  UCD140266  Carex densa Alice Eastwood; John Thomas Howell, J. W. Stacey 1938-4-24 5246 San Mateo Half Moon Bay. Comment
  UCD165066  Carex densa Peter Rubtzoff 1975-5-21 7976 San Mateo San Bruno Mountains.'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  JROH4343  Carex globosa John Hunter Thomas 1992-4-23 25152 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Rattlesnake Rocks and along trail to redwoods. Comment
  CAS-BOT-BC28411  Carex gracilior W. R. Dudley 1900-3-17 s.n. San Mateo A field N of Seal Cove Comment
  CAS-BOT-BC146617  Carex gynodynama W. R. Dudley 1896-4-17 s.n. San Mateo Pebble Beach Pasture, Pescadero Comment
  JROH4349  Carex harfordii John Rawlings 2009-5-13 1055 San Mateo Jasper Ridge Biological Preserve, Stanford University. Just beyond NE terminus of Leonard's Bridge, a large clump on the SE verge of the trail. 107 Comment
  JROH4352  Carex harfordii John Rawlings 2010-5-19 1057 San Mateo Jasper Ridge Biological Preserve, Stanford University. Just beyond NE terminus of Leonard's Bridge, a large clump on the SE verge of the trail. 107 Comment
  SEINET7561257 Image available Carex harfordii Andrew L. Hipp, Jacob Pollock 1999-5-22 282 San Mateo Marsh at the mouth of Pescadero Creek, near Pescadero State Beach, north pond. 6 Comment
  CAS-BOT-BC227481  Carex harfordii Peter Rubtzoff; Elizabeth McClintock; Paul Reeberg 1989-6-3 s.n. San Mateo San Bruno Mountains. In the main drainage area of the Shearwater area, west of Bayshore Boulevard 76 Comment
  POM248613  Carex harfordii J. T. Howell 1938-5-1 13781 San Mateo Near South San Francisco. Comment
  RSA10995  Carex nudata Carl B. Wolf 1928-3-13 1532 San Mateo San Francisquito Creek near Isolation Hospital-Stanford. Comment
  RSA100991  Carex obnupta G. Oberlander 1950-5-6 828 San Mateo Pilarcitos Lake. San Francisco Watershed Reserve. Comment
  UCR279853  Carex obnupta Peter Rubtzoff 1978-5-18 9174 San Mateo San Francisco Bay Region, San Bruno Mountains, 'saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction 220 Comment
  CAS-BOT-BC176400  Carex obnupta Peter Rubtzoff 1976-6-30 8711 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  UC1055830  Carex obnupta Frank W. Gould 1939-5-6 655 San Mateo 13 mi n Santa Cruz County line (on coast highway) 15 Comment
  CAS-BOT-BC118332  Carex praegracilis W. R. Dudley 1906-6-12 s.n. San Mateo In meadow on Mt. side W of Trippstore, Woodside. Comment
  CAS-BOT-BC117643  Carex serratodens LeRoy Abrams 1902-5-4 2425 San Mateo Woodside. Comment
  JROH4360  Carex serratodens John Hunter Thomas 1986-6-9 24093 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA783466  Carex subbracteata Peter Rubtzoff, Roman Gankin 1975-5-21 7975 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction Comment
  SEINET7577065 Image available Carex subbracteata John Thomas Howell 1938-5-1 13778 San Mateo Near South San Francisco. Comment
  CAS-BOT-BC116821  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell; J. W. Stacey 1938-4-24 5257 San Mateo Pescadero Comment
  CAS-BOT-BC116822  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell; J. W. Stacey 1938-4-24 5256 San Mateo Pescadero Comment
  CAS-BOT-BC116827  Carex subbracteata var. subbracteata W. R. Dudley 1908-6-26 s.n. San Mateo Edge of Pond, near Coal Mine Ridge Road. Comment
  CAS-BOT-BC115511  Carex tumulicola W. R. Dudley 1910-5-26 s.n. San Mateo Coal Mine Ridge near Black Mountain Comment
  JROH4365  Carex tumulicola John Hunter Thomas 1978-4-8 19059 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4366  Carex tumulicola John H. Thomas 1978-4-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC115512  Carex tumulicola W. R. Dudley 1906-5-13 s.n. San Mateo In oak woods, SW of San Mateo Comment
  CAS-BOT-BC227876  Carex tumulicola Elizabeth McClintock; Paul Reeberg 1989-6-1 s.n. San Mateo San Bruno Mountains. In ravine at southern tip of ridge separating Juncus and Tank Ravines, above Hillside Boulevard 114 Comment
  UCSB1812  Carpobrotus edulis Walker, Clifford 1954-4-20 San Mateo 50 yards from ocean, 1 miles south of Half Moon Bay Comment
  CAS-BOT-BC249186  Castilleja affinis I. Williams 1920-4-1 s.n. San Mateo Santa Cruz Mountain Peninsula. Woodside Comment
  OBI59410  Castilleja affinis Rimo Bacigalupi, J. R. Sweeney, Cliff Fenneman and George Bacigalupi, Jr 1954-8-3 4733 San Mateo Extreme NW San Mateo County. Hgts above Thornton Beach close to State Hwy 1 55 Comment
  JEPS88802  Castilleja affinis subsp. affinis T. I. and F. M. Chuang 1991-7-3 7861 San Mateo 1 mi s Linda Mar (on Highway 1) Comment
  JROH3938  Castilleja affinis subsp. affinis John H. Thomas 1955-5-6 5013 San Mateo Jasper Ridge Biological Preserve, Stanford University 182 Comment
  JROH3951  Castilleja affinis subsp. affinis John Hunter Thomas 1983-4-28 21780 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1036425  Castilleja affinis subsp. affinis G. B. Rossbach 1955-7-26 617 San Mateo near San Francisco County line (Route 1) Comment
  UC1537571  Castilleja affinis subsp. affinis Gordon H. True Jr. 1936-4-5 389 San Mateo between San Gregorio and Pescadero 152 Comment
  JEPS60426  Castilleja affinis subsp. affinis T. I. Chuang and F. M. Chuang 1969-6-22 6666 San Mateo 1.5 mi from Verde Road junction with Lobitos Creek Road Comment
  UCSC006159  Castilleja ambigua Randall Morgan 1999-7-12 3588 San Mateo ca. 1+ mile north of Bean Hollow State Beach Comment
  POM15341A  Castilleja ambigua subsp. ambigua Copeland 1903-6-3 3298 San Mateo Montara Point. Comment
  JROH3970  Castilleja attenuata John Hunter Thomas 1985-4-18 23526 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR136714  Castilleja densiflora L. S. Rose 1948-5-16 48113 San Mateo San Francisco Bay Region, Emerald Lake, hills west of Redwood City 152 Comment
  HSC34849  Castilleja densiflora Thomas W. Nelson 1975-5-8 1808 San Mateo Beside Hwy. 280 S of San Francisco Comment
  JROH3976  Castilleja densiflora subsp. densiflora Duncan M. Porter 1961-4-8 749 San Mateo Jasper Ridge Biological Preserve, Stanford University; near gate on top of ridge Comment
  UCSB18232  Castilleja densiflora subsp. densiflora Muirhead, M. 1964-4-17 San Mateo Crocker Estate, Hillsborough 76 Comment
  UC1012339  Castilleja exserta F. W. Pennell and D. D. Keck 1940-5-15 25418 San Mateo e of upper Crystal Springs Lake (sw of San Mateo); Crystal Springs Lake 60 Comment
  SEINET12288674  Castilleja foliolosa L. R. Abrams 1904-1 10 San Mateo Santa Cruz Peninsula, near Crystal Springs Lakes, Santa Cruz Mts 152 Comment
  CAS-BOT-BC243835  Castilleja latifolia Peter H. Raven 1950-4-16 1782 San Mateo Colma Canyon, San Bruno Mts. 182 Comment
  POM283643  Castilleja latifolia Lyman D. Benson 1930-6-14 2158 San Mateo San Gregorio. 30 Comment
  JEPS49067  Castilleja rubicundula subsp. lithospermoides Lewis S. Rose 1966-5-2 66034 San Mateo w of Redwood City; Emerald Lake 91 Comment
  UCD123053  Castilleja rubicundula subsp. lithospermoides Lewis S. Rose 1966-5-2 66034 San Mateo Emerald Lake, west of Redwood City. 91 Comment
  JEPS18907  Castilleja subinclusa subsp. franciscana Rimo Bacigalupi with G. Thomas Robbins 1955-8-4 5447 San Mateo just n Montara Point Lighthouse (at the town of Montara); Montara Comment
  JEPS34324  Castilleja subinclusa subsp. franciscana L. R. Heckard, and Rimo Bacigalupi 1963-7-2 1329 San Mateo just e Adobe Ave. in San Pedro Valley (grade of old county road over San Pedro Mt.); San Pedro Mt., San Pedro Valley 60 Comment
  JEPS83044  Castilleja subinclusa subsp. franciscana Roy E. Buck, Randall A. Morgan, James A. West 1983-7-15 430 San Mateo ca 1.7 km sw Pilarcitos Dam (and 5.8 km nw of intersection of Calif Hwys 35 and 92, along crest of Cahill Ridge, on e side of gravel rd); San Francisco Watershed Reserve, Cahill Ridge 335 Comment
  UC311191  Castilleja subinclusa subsp. franciscana A. D. E. Elmer May 1903 4527 San Mateo San Bruno Hills Comment
  JEPS6922  Castilleja subinclusa subsp. franciscana Rimo Bacigalupi with G. Thomas Robbins 1954-6-18 4554 San Mateo between La Honda Creek and Pescadero Creek (summit of divide, on the road from La Honda and San Mateo County Memorial Redwood Park) 304 Comment
  JEPS20780  Castilleja wightii Lawrence Beane 1949-6-2 484 San Mateo s of Pescadero (beyond lighthouse on hillside, Highway 1) Comment
  JEPS29419  Castilleja wightii L. R. Heckard 1961-7-16 1267 San Mateo near San Bruno Mt. summit; San Bruno Mt. 304 Comment
  JEPS47428  Castilleja wightii L. R. Heckard 1964-7-26 1426 San Mateo 0.4 mi up Lobitos Creek road from Verde Road on old highway (Lobitos Creek road, above Lobitos Creek valley) Comment
  JEPS6924  Castilleja wightii Rimo Bacigalupi with G. Thomas Robbins 1954-6-18 4557 San Mateo 3.3 mi s Pescadero (along Calif Hwy 1, road bank just s of bridge across Arroyo de los Frijoles) Comment
  JEPS78273  Castilleja wightii L. R. Heckard with T. I. Chuang and Mike Morris 1979-6-21 5118 San Mateo s end Adobe Avenue (San Pedro Valley); San Pedro Valley Comment
  NY68181  Castilleja wightii A. D. E. Elmer 07 1903 4761 San Mateo San Pedro Comment
  RSA10376A  Castilleja wightii H. A. Barker 1926-5-1 606 San Mateo Kings Mt. Comment
  RSA622154  Castilleja wightii John A. Churchill 1974-4-14 744121 San Mateo Half Moon Bay. Route 1 behind Half Moon Bay. Comment
  CAS-BOT-BC39381  Caulanthus lasiophyllus Reed Clark Rollins 1942-4-30 3005 San Mateo Southeast slope of the San Bruno Hills, about 1 mile west of Brisbane. Comment
  CAS-BOT-BC40391  Caulanthus lasiophyllus W. R. Dudley 1896-4-4 s.n. San Mateo Santa Cruz Peninsula. Near Crystal Springs Lake. Comment
  JROH1524  Caulanthus lasiophyllus John H. Thomas 1967-5-31 12940 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC48305  Ceanothus cuneatus W. R. Dudley 1894-3-1 s.n. San Mateo Ridge between Los Trancos Creek and San Francisquito Creek Comment
  CAS-BOT-BC48307  Ceanothus cuneatus Volney Rattan 1884-3-1 s.n. San Mateo Rattan Ranch, Woodside Comment
  JROH3520  Ceanothus cuneatus var. cuneatus John H. Thomas 1955-5-6 5016 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3526  Ceanothus cuneatus var. cuneatus Ann Lambrecht 2004-3-10 8 San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail 11. Chaparral-woodland transition. Comment
  CDA34104  Ceanothus incanus D. G. Kelch, David Gernandt, Steffi Ickert-Bond, Yingli Guo 2011-4-22 11 .158 San Mateo Santa Cruz Mountains.; Along Big Basin Hwy ~5 km E of Big Basin. Comment
  CAS-BOT-BC51599  Ceanothus oliganthus var. sorediatus W. R. Dudley 1894-12-13 s.n. San Mateo Above Prestou's, La Honda road Comment
  RSA136269  Ceanothus papillosus C. F. Baker 1902-5-10 803 San Mateo Kings Mountain. Comment
  UC870626  Ceanothus papillosus H. A. Lewis 1908-4-20 San Mateo near Crystal Springs Lakes; near Crystal Springs Lakes 213 Comment
  UCR139357  Ceanothus papillosus David D. Keck 1932-5-11 1774 San Mateo San Francisco Bay Region, east side of Kings Mountain, on Kings Mountain Road 500 Comment
  SEINET3815049 Image available Ceanothus sorediatus Lewis S. Rose 1935-4-16 s.n. San Mateo Woodside, Woodside. Comment
  CAS-BOT-BC52279  Ceanothus thyrsiflorus Elizabeth McClintock 1963-2-16 s.n. San Mateo unspecified Comment
  CAS-BOT-BC52294  Ceanothus thyrsiflorus J. I. McMurphy 1906-5-8 12 San Mateo Woodside, Santa Cruz Mts. 121 Comment
  CAS-BOT-BC52296  Ceanothus thyrsiflorus Sue Roberts 1954-5-1 58 San Mateo La Honda, 7 miles east of La Honda Comment
  CAS-BOT-BC52304  Ceanothus thyrsiflorus A. D. E. Elmer 1903-6-1 4603 San Mateo Lake San Andreas Comment
  CAS-BOT-BC52306  Ceanothus thyrsiflorus Mrs. Ernest Meiere 1920-5-2 s.n. San Mateo Los Altos Comment
  CDA34570  Ceanothus thyrsiflorus M. Beyers, Z. Bakman, L. Feely, & D. Sozanni 2011-4-4 868 San Mateo Pacifica: San Pedro Valley County Park, along Brooks Creek Trail. 148 Comment
  RSA240628  Ceanothus thyrsiflorus C. W. Tilforth, John Dourley 1973-7-19 936 San Mateo Gazos Creek Road, between Butano and Big Basin State Parks Comment
  RSA398961  Ceanothus thyrsiflorus Glenn A. Gorelick 1967-4-28 s.n. San Mateo San Bruno Mts, overlooking Daly City ner San Francisco Comment
  SJSU5728  Ceanothus thyrsiflorus L. S. Rose 1963-4-27 63004 San Mateo La Honda 121 Comment
  SEINET12209977  Ceanothus thyrsiflorus Unknown 1932-1 8972 San Mateo Comment
  UCSB3904  Ceanothus thyrsiflorus var. griseus Walker, Clifford 1954-4-20 San Mateo Woodside Rd. 1 mi. E. Woodside 3 Comment
  JROH589  Centaurea calcitrapa John H. Thomas 1974-8-3 17500 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC30907  Centaurea calcitrapa Alice Eastwood 1896-9-1 San Mateo on the road to Crystal Springs Comment
  CAS-BOT-BC274584  Centaurea calcitrapa Evelina Cannon 1896-1-1 s.n. San Mateo San Mateo Comment
  SD30655  Centaurea calcitrapa Edith A. Purer 1933-8-13 5423 San Mateo In an open field, Santa Clara Valley, near Belmont. Comment
  CAS-BOT-BC277124  Centaurea melitensis J. H. Thomas 1958-6-11 7224 San Mateo About 4.3 miles due east of Belmont near Crystal Springs Reservoir 91 Comment
  JROH598  Centaurea melitensis John H. Thomas 1962-6-10 9909 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM54379  Centaurea melitensis A. D. E. Elmer 1903-06 4281 San Mateo Crystal Springs Lake. Comment
  RSA101008  Centaurea melitensis G. Oberlander 1950-5-6 895 San Mateo Near San Anreas Lake, San Francisco Watershed Reserv Comment
  CDA38621  Centaurea stoebe subsp. micranthos D. Petersen 2012-9-17 PDR# MVAP 06098624 San Mateo Hillsborough; off of Polhemus Road; south shaft of New Crystal Springs Bypass Tunnel Project's muck disposal site (aka the upper terrace). 0 Comment
  SEINET8730776 Image available Centaurium exaltatum Lewis S. Rose 1941-1 41280 San Mateo Kings Mountain Rd, 3 miles west of Woodside 183 Comment
  UCSC005474  Centaurium muehlenbergii Randall Morgan 1998-7-28 3329 San Mateo N stretch of Stage Road off Hwy 1 Comment
  CAS-BOT-BC272816  Centromadia parryi subsp. parryi David D. Keck 1931-10-5 1291 San Mateo Salada Beach Comment
  CAS-BOT-BC279330  Centromadia pungens subsp. pungens J. H. Thomas 1954-5-28 4231 San Mateo Redwood City. Near intersection of Bayshore and Main St. Comment
  CAS-BOT-BC279325  Centromadia pungens subsp. pungens Lewis S. Rose 1965-9-20 65106 San Mateo Burlingame, Trousdale Dr. & California Dr. 9 Comment
  CAS-BOT-BC279326  Centromadia pungens subsp. pungens Lewis S. Rose 1965-9-20 65106 San Mateo Burlingame, Trousdale Dr. & California Dr. 9 Comment
  JEPS85229  Centunculus minimus Roy E. Buck, James A. West 1985-4-29 525 San Mateo 1.9 air km ene of Franklin Point (Cascade Ranch, 0.8 air km ne of Whitehouse Canyon Rd and Hwy 1 jct, just n of Whitehouse Canyon Rd,); Cascade Ranch 365 Comment
  CAS-BOT-BC384957  Cerastium arvense David D. Keck 1932-3-27 1410 San Mateo Stanford University; near the quarry on Matadero Creek Comment
  CAS-BOT-BC388387  Cerastium glomeratum A. D. E. Elmer 1903-4-1 4473 San Mateo San Bruno Hills Comment
  JROH152  Ceratophyllum demersum John Hunter Thomas 1981-7-12 20712 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC400166  Ceratophyllum demersum W. R. Dudley 1909-11-8 s.n. San Mateo Santa Cruz Mountain Peninsula. Hallidie Ranch, Portola Valley Comment
  SEINET11914804  Cercocarpus betuloides Unknown 1932-1 8945 San Mateo Los Francos Woods Comment
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Nov 1 2021
  JROH3613  Cercocarpus betuloides var. betuloides W. R. Dudley 1893-12-3 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Dam Comment
  JROH3619  Cercocarpus betuloides var. betuloides H. L. Dale 1927-5-30 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake Comment
  JROH3627  Cercocarpus betuloides var. betuloides John Hunter Thomas 1981-7-24 20730 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM158132  Chenopodium ambrosioides var. ambrosioides L. R. Abrams 1902-9-21 2997 San Mateo Crystal Lake Comment
  JROH1825  Chenopodium rubrum var. humile John Hunter Thomas 1980-11-27 20195 San Mateo Jasper Ridge Biological Preserve, Stanford University; old bathing beach area Comment
  JROH1826  Chenopodium rubrum var. humile John Hunter Thomas 1980-11-27 20190 San Mateo Jasper Ridge Biological Preserve, Stanford University; delta Comment
  CAS-BOT-BC497725  Chlorogalum pomeridianum Ned Cahill 1974-4-29 171 San Mateo Serpentine fields bordered by chaparral near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  CAS-BOT-BC497730  Chlorogalum pomeridianum Walter & Irja Knight 1964-5-4 s.n. San Mateo Colma Canyon Comment
  SEINET12044203  Chlorogalum pomeridianum L. S. Rose 1934-1 34256 San Mateo Crystal Springs Lake Comment
  RSA10283  Chlorogalum pomeridianum var. divaricatum H. A. Barker 1927-5-14 657 San Mateo North of Half Moon Bay. Comment
  UC162391  Chorizanthe cuspidata var. cuspidata A. A. Heller 1906-6-8 8383 San Mateo near Ocean View, San Francisco; near Ocean View, San Francisco Comment
  UC202786  Chorizanthe cuspidata var. cuspidata A. D. E. Elmer May, 1903 4793 San Mateo San Pedro Comment
  UC306660  Chorizanthe cuspidata var. cuspidata A. D. E. Elmer May 1903 4828 San Mateo San Pedro; ; San Pedro, San Mateo Co. Comment
  POM87940  Chorizanthe cuspidata var. marginata L. R. Abrams 1901-05 1603 San Mateo Colma Comment
  CDA28831  Chrysolepis chrysophylla D. G. Kelch 2009-6-9 9 .4 San Mateo Santa Cruz Mts.; Chert outcrop and adjacent mixed evergreen forest along Skyline Blvd ~1 km W of Skegg s Point. Comment
  RSA212149  Chrysolepis chrysophylla L. S. Rose 1970-7-15 70073 San Mateo Kings Mountain. 915 Comment
  CAS-BOT-BC36402  Chrysolepis chrysophylla var. minor David D. Keck 1934-7-7 2926 San Mateo Kings Mountain, just east of summit 548 Comment
  JEPS78658  Chrysolepis chrysophylla var. minor Edward Lee 1936-1-26 1742 San Mateo between Purisima Creek and Tunitas Creek (near summit) 609 Comment
  UC1135217  Chrysolepis chrysophylla var. minor C. M. Belshaw 1935-1-25 1469 San Mateo 2.5 mi nw Sierra Moreno Peak; Santa Cruz Quad. 457 Comment
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Oct 3 2011
  JROH2587  Cicendia quadrangularis John H. Thomas 1974-4-4 17086 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU8865  Cicendia quadrangularis S. H. Casey 1979-5-10 San Mateo Wunderlich Park c. 2 mi S of Woodside Comment
  UCR240607  Cirsium T. B. Salvato, Lia V. D. Mansfield, Joel-Henry J. Mansfield 2008-6-14 3529 San Mateo Central Coast, Pebble Beach State Beach, 12.5 mi north of Santa Cruz Co. line, along Hwy 1, Pacific Coast Hwy, 1.65 mi south of road to Pesacadero and 16 mi south of Half Moon Bay 11 Comment
  CAS-BOT-BC100944  Cirsium fontinale var. fontinale A. D. E. Elmer 1903-6-1 4292 San Mateo Crystal Springs Lake Comment
  CDA1227  Cirsium fontinale var. fontinale T. C. Fuller 1960-6-23 4541 San Mateo E shore Upper Crystal Springs Lake; 0.7 miles S/ road across lake. 0 Comment
  SEINET5506233  Cirsium fontinale var. fontinale Lewis S. Rose San Mateo Comment
  CAS-BOT-BC285671  Cirsium occidentale var. occidentale A. A. Heller 1906-6-8 8379 San Mateo Near Ocean View, San Francisco, on the Lake Merced side of the Ocean Shore tracks Comment
  CAS-BOT-BC285672  Cirsium occidentale var. occidentale A. A. Heller 1906-6-8 8379 San Mateo Near Ocean View, San Francisco, on the Lake Merced side of the Ocean Shore tracks Comment
  CAS-BOT-BC280519  Cirsium quercetorum Peter H. Raven 1950-6-3 2261 San Mateo Near San Andreas Lake 121 Comment
  CAS-BOT-BC280520  Cirsium quercetorum A. D. E. Elmer 1903-6-1 4290 San Mateo Crystal Springs Lake Comment
  RSA0070861  Cirsium quercetorum John H. Thomas 1958-6-11 7227 San Mateo About 4.3 miles due E of Belmont near Crystal Springs Reservoir. 91 Comment
  UC178910  Cirsium quercetorum Katharine Brandegee 1905-1 San Mateo Moss Beach Comment
  UC895026  Cirsium quercetorum S. F. Blake 1927-7-8 10006 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC280518  Cirsium quercetorum John Thomas Howell 1939-6-16 14740 San Mateo Near San Andreas Lake Comment
  CAS-BOT-BC288688  Cirsium quercetorum H. K. Sharsmith 1937-6-3 3952 San Mateo E of lake near road which connects Skyline Blvd with road to Belmont, about 3 miles W of San Mateo, Crystal Springs Lake 152 Comment
  RSA0070862  Cirsium quercetorum E. B. Copeland 1903-6-7 3316 San Mateo Montara Point. Comment
  SEINET11832881  Cirsium quercetorum Unknown 1932-1 9149 San Mateo near Spring Lakes Comment
  SJSU11877  Cirsium quercetorum G. I. Tourtlotte 1968-5-22 San Mateo S side Guadalupe Canyon, San Bruno Mts. Comment
  JROH639  Cirsium vulgare John H. Thomas 1974-8-3 17499 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC285871  Cirsium vulgare Elizabeth McClintock 1967-9-24 s.n. San Mateo San Bruno Mountain. Crocker Avenue Comment
  CAS-BOT-BC223882  Cistus Greg de Nevers 1996-5-22 10811 B San Mateo Edgewood County Park 121 Comment
  JROH1830  Cistus incanus D. E. Breedlove 1971-5-31 19350 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  CAS-BOT-BC164306  Clarkia davyi A. A. Heller 1906-6-8 8384 San Mateo Near Ocean View, San Francisco, on the Lake Merced side of the Ocean Shore tracks Comment
  CAS-BOT-BC163378  Clarkia purpurea subsp. purpurea Phillip C. Wheeler 1965-5-25 sn. San Mateo Buckeye Canyon Comment
  CAS-BOT-BC163970  Clarkia purpurea subsp. quadrivulnera John H. Thomas 1961-5-14 9381 San Mateo Just north of dam on San Mateo Creek 121 Comment
  JEPS127894  Clarkia purpurea subsp. quadrivulnera Adam C. Schneider 2013-5-17 178 San Mateo Comment
  SEINET4145649  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1906-6-8 8384 San Mateo Near Ocean View, San Francisco Comment
  CAS-BOT-BC165173  Clarkia rubicunda W. R. Dudley 1902-9-21 s.n. San Mateo Near Crystal Springs Reservoir Comment
  JEPS83042  Clarkia rubicunda Roy E. Buck, Randall A. Morgan, James A. West 1983-7-15 432 San Mateo ca. 0.5 km ne Pilarcitos Dam (near crest of Cahill Ridge, w of gravel rd., overlooking Pilarcitos Lake, 7.5 km nw of the intersection of Calif. Hwys. 35 and 92); San Francisco Watershed Reserve 289 Comment
  JROH3021  Clarkia rubicunda John H. Thomas 1975-7-31 17983 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3031  Clarkia rubicunda John Hunter Thomas 1983-6-29 22710 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA113601  Clarkia rubicunda Peter H. Raven 1957-6-24 10972 San Mateo North of the Light House, Pigeon Point Comment
  UC107811  Clarkia rubicunda Katharine Brandegee 1905-7-20 San Mateo near Lake Pilarcitos Comment
Read comments
Jun 26 2010
  UC107818  Clarkia rubicunda Katharine Brandegee 1905-6-20 San Mateo near Half Moon Bay; Moss Beach (Winkie's) Comment
  UC1279949  Clarkia rubicunda Peter H. Raven 1957-6-30 11014 San Mateo 1.8 mi e Pescadero (on road along Pescadero Creek) Comment
  UC930770  Clarkia rubicunda Mrs. Phipps July 1922 San Mateo Tunitas Creek Comment
  CAS-BOT-BC165153  Clarkia rubicunda Walter Knight 1964-9-14 836 San Mateo On ridge - between Peak Mt. and highway 1 Comment
  RSA113619  Clarkia rubicunda Peter H. Raven 1957-6-24 10969 San Mateo 0.5 miles south of San Gregorio on old coast highway Comment
  SEINET12189237  Clarkia rubicunda Unknown 1932-1 9247 San Mateo near Pescadero Comment
  UC1279916  Clarkia rubicunda Peter H. Raven 1957-6-30 11017 San Mateo 3.0 mi from State Highway 5 (Skyline Boulevard) (on road to Portola State Park) Comment
  JROH3038  Clarkia unguiculata Toni Corelli 2003-5-28 260 San Mateo Jasper Ridge Biological Preserve, Stanford University; along Trail 21, below Searsville Lab 109 Comment
  JROH3332  Claytonia exigua subsp. exigua John H. Thomas 1969-4-20 14895 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3334  Claytonia exigua subsp. exigua John H. Thomas 1975-4-5 17717 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5709  Claytonia parviflora subsp. parviflora John Rawlings 2015-3-15 1348 San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail 8 110 Comment
  JROH5734  Claytonia parviflora subsp. parviflora John Rawlings 2015-4-5 1654 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near base of scree slope in old quarry off of Trail 12 111 Comment
  JROH3343  Claytonia perfoliata subsp. perfoliata John H. Thomas 1963-5-15 10088 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3349  Claytonia perfoliata subsp. perfoliata John H. Thomas 1977-4-8 18525 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5905  Claytonia perfoliata subsp. perfoliata M. Ray 1982-5-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail, west side of Searsville Dam Comment
  CAS-BOT-BC91480  Clematis lasiantha Josephine D. Randall 1907-7-4 305 San Mateo Santa Cruz Peninsula. Mill's Lake. Comment
  JROH3408  Clematis lasiantha Duncan M. Porter 1961-4-8 748 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3410  Clematis lasiantha John H. Thomas 1966-4-29 11586 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5686  Clematis lasiantha John Rawlings 2015-3-3 1310 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail 9. 194 Comment
  POM151213  Clematis lasiantha C. F. Baker 1902-4-12 499 San Mateo La Honda. Comment
  JROH2873  Clinopodium douglasii John H. Thomas 1970-1-1 15499 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM290456  Clintonia andrewsiana Lyman Benson 1930-6-14 2151 San Mateo La Honda, Santa Cruz Mtn. range. 213 Comment
  UC1134576  Clintonia andrewsiana N. K. Carlson 1935-7-3 116 San Mateo 3 mi s of Bellvale 91 Comment
  UC729849  Clintonia andrewsiana Carl B. Wolf 1929-5-25 3736 San Mateo 2 mi from Pescadero (on Alpine Creek); Alpine Creek Comment
  SEINET12044199  Clintonia andrewsiana L. S. Rose 1931-1 s.n. San Mateo La Honda Comment
  CAS-BOT-BC240928  Collinsia multicolor Reed C. Rollins 1941-3-22 2953 San Mateo San Bruno Hills, 2 miles southeast of Daly City Comment
  JEPS121051  Collinsia multicolor Janell M. Hillman 2012-4-29 San Mateo San Bruno Mountain. Comment
  UC26608  Collinsia multicolor J. Burtt Davy 1895-4-20 1025 San Mateo Millbrae Comment
  CAS-BOT-BC240929  Collinsia multicolor W. R. Dudley 1906-5-13 s.n. San Mateo Santa Cruz Mountain Peninsula. Hills S.W. of San Mateo Comment
  JROH4021  Collinsia sparsiflora var. collina John Hunter Thomas 1983-4-14 21402 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS19373  Collinsia sparsiflora var. sparsiflora G. Thomas Robbins 1937-4-11 86 San Mateo near Spring Valley Lake (along rd to Woodside) Comment
  RSA409232  Collomia heterophylla D. D. Keck 1932-5-13 1777 San Mateo Above Woodside on La Honda road, E slope of the Santa Cruz Mtns. Comment
  RSA10271  Collomia heterophylla H. A. Barker 1927-5-6 696 San Mateo Summit of Kings Mts. Comment
  POM132599  Conioselinum gmelinii A. D. E. Elmer 1900-04 2289 San Mateo San Bruno Mountain Comment
  JROH208  Conium maculatum John H. Thomas 1964-7-3 10442 San Mateo Jasper Ridge Biological Preserve, Stanford University; along road above Searsville Lake Comment
  JROH212  Conium maculatum John H. Thomas 1977-4-29 18576 San Mateo Jasper Ridge Biological Preserve, Stanford University; below Searsville Dam Comment
  JROH213  Conium maculatum John Hunter Thomas 1980-5-6 19932 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH215  Conium maculatum John Hunter Thomas 1981-5-5 20541 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  UC140526  Conium maculatum C. F. Baker 1902-12-1 196 San Mateo Pacific Coast, Summit of Coast Range Coast Range; Pacific Coast, Coast Range Comment
  UCD18542  Convolvulus arvensis Roman Gankin 1950-7-4 10 San Mateo city of Menlo Park, Hermosa Way, along roadside. 30 Comment
  CAS-BOT-BC344849  Conyza Peter Rubtzoff 1987-11-27 9887 San Mateo San Bruno Mountains, Saddle area on north side of Guadalupe Canyon parkway west of Radio Road junction. Western upper edge of East Fork Colusa Creek Canyon. Comment
  CAS-BOT-BC286208  Conyza canadensis Walter Knight; Irja Knight 1964-5-30 s.n. San Mateo San Bruno Mountain. Colma Canyon Comment
  CAS-BOT-BC286209  Conyza canadensis Walter Knight; Irja Knight; Elizabeth McClintock 1964-9-11 s.n. San Mateo San Bruno Mountain. Point San Bruno Comment
  CAS-BOT-BC288965  Conyza floribunda Peter Rubtzoff; Patricia Fallon 1987-8-26 9835 San Mateo San Bruno Mts: Saddle area on N side of Guadelupe Canyon. Parkway W of Radio Rd junction; NW part of the area along old Guadelupe Rd Comment
  JROH5743  Corallorhiza striata L. Nordby 1982-5-15 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. 2 km east of redwood stands Comment
  SEINET4676141  Cordylanthus pilosus Lewis S. Rose 1941-8-9 41362 San Mateo Woodside.; 0 60 Comment
  JROH4028  Cordylanthus pilosus subsp. pilosus John H. Thomas 1972-8-18 16151 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5812  Cordylanthus rigidus subsp. rigidus A. Lambrecht, R. Reynolds, A. Cummings 2016-8-23 50 San Mateo Trail 9 near upper WiFi station 199 Comment
  CAS-BOT-BC101478  Corethrogyne filaginifolia C. F. B. 1902-5-10 810 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC101479  Corethrogyne filaginifolia Miss Eastwood 1896-6-1 s.n. San Mateo Spring Lake Comment
  CAS-BOT-BC101484  Corethrogyne filaginifolia John Thomas Howell 1962-6-6 37415 San Mateo Crystal Springs Lake Comment
  RSA107076  Cornus californica L. S. Rose 1956-5-7 56064 A San Mateo 3 mi. e. of Half Moon Bay. 30 Comment
  CAS-BOT-BC210354  Cornus sericea Lewis S. Rose 1956-5-7 56064 A San Mateo 3 mi. e. of Half Moon Bay 30 Comment
  JROH1878  Cornus sericea subsp. sericea John Hunter Thomas 1987-5-26 24311 San Mateo Jasper Ridge Biological Preserve, Stanford University; along causeway Comment
  JROH1883  Cornus sericea subsp. sericea John Hunter Thomas 1991-8-4 25080 San Mateo Jasper Ridge Biological Preserve, Stanford University; along causeway Comment
  JROH5906  Cornus sericea subsp. sericea M. Ray 1982-4-25 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; swamp trail about 1 km from Mapache Gate Comment
  CDA18374  Cortaderia selloana G. D. Barbe 1978-9-26 2440 San Mateo Skylawn Memorial Park; drive from Hwy 92 into the park. 716 Comment
  JROH4975  Cortaderia selloana John Hunter Thomas 1982-7-3 21060 San Mateo Jasper Ridge Biological Preserve, Stanford University. Lake edge Comment
  CAS-BOT-BC180280  Corylus cornuta subsp. californica Robert Setzer 1969-3-29 2137 San Mateo Colma Canyon along stream bank. San Bruno Mountain Comment
  JROH1335  Corylus cornuta subsp. californica John H. Thomas 1976-10-16 18430 San Mateo Jasper Ridge Biological Preserve, Stanford University; along or near San Francisquito Creek from the low flow crossing to the vicinity of the old fire place ruins downstream Comment
  JROH1336  Corylus cornuta subsp. californica John Hunter Thomas 1981-2-14 20228 San Mateo Jasper Ridge Biological Preserve, Stanford University; redwood area below dam Comment
  CAS-BOT-BC180374  Corylus cornuta subsp. californica Walter Knight 1964-9-14 849 San Mateo On sandstone ridge between Peak Mt. and Highway 1 Comment
  SEINET12034012  Corylus rostrata var. californica Unknown 1929-1 7292 San Mateo Kings Mtn Comment
  CAS-BOT-BC141551  Cotoneaster pannosus D. E. Breedlove 1974-5-13 36230 San Mateo San Pedro Valley Park, Pacifica 152 Comment
  CAS-BOT-BC141552  Cotoneaster pannosus Elizabeth McClintock; Paul Reedberg 1989-9-4 s.n. San Mateo West end of industrail park - San Bruno Mountains Comment
  CAS-BOT-BC344964  Cotoneaster pannosus Peter Rubtzoff 1977-4-16 8951 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road Junction, San Bruno Mountains. Comment
  CHSC27886  Cotula coronopifolia Susan Perkins 1978-3-24 7 San Mateo San Gregorio Beach, at jct Hwys 1 and 84. 30 yds s of San Gregorio Creek. 6 Comment
  JROH660  Cotula coronopifolia John Hunter Thomas 1981-4-5 20270 San Mateo Jasper Ridge Biological Preserve, Stanford University; on dam Comment
  UCR121577  Cotula coronopifolia George K. Helmkamp, E. A. Helmkamp 1999-6-28 5011 San Mateo Pescadero Creek Watershed, Bean Hollow Road 0.3 mi south of Pescadero Road (SW of Pescadero). Slopes above Butano Creek 61 Comment
  CAS-BOT-BC291474  Cotula coronopifolia Daniel Cohen 1953-5-9 76 San Mateo Top of sea cliff at Pescadero Comment
  UC1776756  Cotula mexicana D. Pendleton 2002-3-21 PDR 65823 San Mateo Sharp Park Golf Course, Pacifica Comment
  CAS-BOT-BC427607  Crassula aquatica W. R. Dudley 1910-5-26 s.n. San Mateo Santa Cruz Mountain Peninsula. Coal Mine Ridge, Black Mountain 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
  JROH1889  Crassula connata John Hunter Thomas 1982-5-23 20813 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSC007735  Crassula connata Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  JEPS125947  Crataegus monogyna D. W. Taylor 2000-8-1 17538 San Mateo Montara Mountain: Scarper Peak, western slope of the pek near the summit. Comment
  JROH3657  Crataegus monogyna John Hunter Thomas 1987-4-30 24212 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near the trailers Comment
  CDA4433  Crepis vesicaria subsp. taraxacifolia D. G. Kelch 2002-5-15 s.n. San Mateo Along I-280 W of Woodside. 0 Comment
  JROH1957  Croton setiger John H. Thomas 1967-11-5 14131 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS127873  Cryptantha flaccida Adam C. Schneider 2013-5-17 183 San Mateo Crystal Springs Reservoir Comment
  JROH1362  Cryptantha flaccida John Hunter Thomas 1991-5-2 25023 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5765  Cryptantha flaccida John Rawlings 2016-3-6 1678 San Mateo Jasper Ridge Biological Preserve, Stanford University; upper Big Inlet in serpentine along seasonal drainage 166 Comment
  SJSU7524  Cryptantha flaccida L. S. Rose 1966-5-2 66032 San Mateo Emerald L, W of Redwood City 91 Comment
  JROH1364  Cryptantha micromeres Oz Garton 1968-5-27 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1371  Cryptantha microstachys Herbert Dengler 1960-5-31 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; firetrail on top of Nolan Ridge (the ridge N.E. of Corte Madera Cr. in chaparral -- about 200 yds W. of Westridge border) Comment
  JROH1383  Cryptantha microstachys John Rawlings 2012-5-25 1107 San Mateo Jasper Ridge Biological Preserve, Stanford University. Up-slope along Trail b. 142 Comment
  CAS-BOT-BC80786  Cupressus macrocarpa John H. Thomas 1967-5-2 12814 San Mateo Millbrae. Along Skyline Blvd. near Millbrae Ave. Comment
  CDA39944  Cuscuta campestris F. S. Sampson 1961-9-15 s.n. San Mateo In Scram s Nursery, San Carlos. 0 Comment
  UCR143006  Cuscuta salina Edith A. Purer 1933-8-13 5408 San Mateo San Francisco Bay Region, near Baden Station 12 Comment
  CAS-BOT-BC287333  Cynara cardunculus J. H. Thomas 1958-10-21 7487 San Mateo Near intersection of Bayshore Highway and Main St, Redwood City, near slough Comment
  JEPS22117  Cynara cardunculus subsp. cardunculus J. H. Thomas 1958-10-21 7487 San Mateo near intersection of Bayshore Highway and Main Street; Redwood City Comment
  RSA120949  Cynara scolymus J. T. Howell 1956-11-14 31961 San Mateo Bayshore Highway just south of Main Street, Redwood City. Comment
  JROH5000  Cynodon dactylon John H. Thomas 1966-4-24 11581 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5005  Cynodon dactylon John Hunter Thomas 1987-5-26 24313 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5011  Cynosurus echinatus W. Lennihan 1989-6-22 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. San Francisquito Creek -- above low-flow causeway on left in rocks. 81 Comment
  CAS-BOT-BC114777  Cyperus acuminatus Ira L. Wiggins 1973-7-29 22046 San Mateo Bed of San Francisquito Creek, 50-200 m upstream from Pope Street Bridge. Comment
  JROH4377  Cyperus eragrostis John Hunter Thomas 1977-6-16 18806 San Mateo Jasper Ridge Biological Preserve, Stanford University. Delta in Searsville Lake. Comment
  RSA132456  Cyperus eragrostis John H. Thomas 1959-8-22 8084 San Mateo Jasper Ridge, about 5 miles southwest of Palo Alto. 152 Comment
  CAS-BOT-BC257352  Cyperus eragrostis Peter Rubtzoff 1988-6-9 9924 San Mateo San Bruno Mountains, Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction, along Old Guadalupe Road in the northwestern part of the Saddle area, east of Saddle Trail junction. Comment
  SEINET7581670 Image available Cyperus eragrostis Lewis S. Rose 1965-9-20 65107 San Mateo Trousdale Dr & California Dr. 9 Comment
  UCD141113  Cyperus eragrostis Lewis S. Rose 1965-9-20 65107 San Mateo Burlingame, Trousdale Dr. and California Dr. 9 Comment
  UCD18539  Cyperus eragrostis Roman Gankin 1950-7-4 7 San Mateo east side of the Peninsula Coast Range, off of the King's Mtn. Rd. behind Woodside. 609 Comment
  CAS-BOT-BC192233  Danthonia californica L. R. A. 1902-5-11 2451 San Mateo Crystal Springs Comment
  CAS-BOT-BC227627  Danthonia californica Peter Rubtzoff 1976-5-22 8547 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. East Fork Colma Creek Canyon area. Comment
  UC872608  Datisca glomerata Roxana Stinchfield 1915-10-14 257 San Mateo San Francisquito Creek; Santa Cruz Mountain Peninsula, San Francisquito Creek Comment
  JEPS30900  Deinandra corymbosa J. H. Thomas 1959-8-16 8067 San Mateo about 2 mi n of Pigeon Point 15 Comment
  JROH673  Deinandra corymbosa W. R. Dudley 1893-7-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Comment
  SFV3974  Deinandra corymbosa J. Turner, F. M. Ball 1962-7-7 s. n. San Mateo Highway 1, almost 10 miles north of Santa Cruz County line Open roadside. 30 Comment
  CAS-BOT-BC299190  Deinandra corymbosa subsp. corymbosa Ira L. Wiggins 1949-7-2 12199 San Mateo Pescadero Beach Comment
  CAS-BOT-BC299218  Deinandra corymbosa subsp. corymbosa Elsie Zeile 1909-5-20 s.n. San Mateo Burlingame Comment
  CAS-BOT-BC299219  Deinandra corymbosa subsp. corymbosa J McMurphy 1909-6-13 s.n. San Mateo San Bruno Hills Comment
  CAS-BOT-BC299220  Deinandra corymbosa subsp. corymbosa David D. Keck 1927-6-10 396 San Mateo Radio Statoin, Montara Point Comment
  SJSU8526  Deinandra pentactis M. Perry 1979-10-5 210 San Mateo Cloverdale Road 0.25 mi N of its junction with Gazos Creek Road E of Pigeon Point Comment
  JROH681  Delairea odorata Cary Tronson 2007-11-5 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; near horse trail along Corte Madera Creek, near the collection site of many-flowered tobacco Comment
  UC9192  Delphinium Alice Eastwood 1896-5-1 San Mateo Crystal Springs Comment
  CAS-BOT-BC9222  Delphinium californicum Lewis Samuel Rose 1965-5-3 65058 San Mateo San Bruno Mountains, Colma Canyon 60 Comment
  CAS-BOT-BC9230  Delphinium decorum R. C. Bacigalupi 1922-3-1 s.n. San Mateo Near coast, vicinity of Pigeon Point Comment
  SD37300  Delphinium decorum Janet Turner 1933-4-19 37 San Mateo Emerald Lake Comment
  CAS-BOT-BC10288  Delphinium hesperium Alice Eastwood 1912-6-10 320 San Mateo Crystal Springs Comment
  CAS-BOT-BC10282  Delphinium hesperium Herbert L. Mason 1931-7-14 s.n. San Mateo Pescadero Creek, La Honda road Comment
  JROH3448  Delphinium hesperium subsp. hesperium John Hunter Thomas 1981-5-25 20637 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC570175  Delphinium hesperium subsp. hesperium N. K. Carlson 1935-6-29 107 San Mateo 1 mi s Pescadero 91 Comment
  CAS-BOT-BC9873  Delphinium nudicaule D. E. Breedlove 1974-5-13 36210 San Mateo Pacifica, San Pedro Valley Park 152 Comment
  CHSC60193  Delphinium nudicaule Jan M. Karaz 1979-5-27 59 San Mateo 3 mi e of Hwy 280 intersection with Woodside Road, 1.2 mi e of Woodside on Mountain Home Road. 7 Comment
  RSA10344  Delphinium nudicaule H. A. Barker 1926-5-1 575 San Mateo Kings Mt. Comment
  POM177524  Delphinium variegatum W. R. Dudley 1896-4-4 s.n. San Mateo Near Crystal Springs Lake Comment
  CAS-BOT-BC7894  Delphinium variegatum C. F. Baker 1902-5-1 748 San Mateo not specified Comment
  CAS-BOT-BC7898  Delphinium variegatum W. R. Dudley 1906-6-10 s.n. San Mateo on limestone hill, NW of Cahil Ridge Comment
  CAS-BOT-BC7932  Delphinium variegatum A. J. Ward Hornby 1952-5-10 113 San Mateo In hills behind Searsville Lake 426 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
  SJSU3145  Delphinium variegatum W. A. Dout 1957-5-10 20 San Mateo Emerald L district of Redwood City Comment
  SEINET10536059 Image available Delphinium variegatum subsp. apiculatum David D. Keck 1933-5-11 Keck 2309 San Mateo Crystal Springs Lake. Common on rocky ground on open slopes about east side of lake. Comment
  CAS-BOT-BC628  Dendromecon rigida subsp. rigida Daniel Cohen 1953-5-9 83 San Mateo Near Skylind Drive on La Honda Road. Comment
  JROH5045  Deschampsia danthonioides H. L. Mason 1921-5-13 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5046  Deschampsia danthonioides John H. Thomas 1957-4-16 6654 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CLARK-A1528-683  Dicentra formosa William Horn, Jr. 1963-4-13 630413 #1 San Mateo Hillsborough 30 Comment
  UCR2938  Dicentra formosa Wm. Horn Jr. 1963-4-13 630413- 01 San Mateo Hillsborough, 2240 Redington Road 30 Comment
  UCSB44360  Dicentra formosa Brownell, K. 1979-3-27 San Mateo Gazoos Road, .6 miles east of Highway 1, near Butano State Park 76 Comment
  CAS-BOT-BC911  Dicentra formosa subsp. formosa LeRoy Abrams 1902-4-13 2336 San Mateo Crystal Springs Comment
  CAS-BOT-BC500933  Dichelostemma capitatum Catherine A. Toschi 1963-2-23 63 :21 San Mateo North slope San Bruno Mountains above Crocker Avenue 152 Comment
  SEINET10533994  Dichelostemma capitatum Kimber 1918-4-25 KIMBER s.n. San Mateo Plants of the Santa Cruz Mountain Peninsula. Jasper Ridge. Serpentine. Comment
  JROH4661  Dichelostemma capitatum subsp. capitatum John Hunter Thomas 1991-5-2 25016 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM276991  Dichelostemma capitatum subsp. capitatum Lyman Benson 1931-3-15 2635 San Mateo Emerald Lake; Redwood City; Mt. Range: Santa Cruz 152 Comment
  RSA212171  Dichelostemma capitatum subsp. capitatum L. S. Rose 1970-4-8 70025 San Mateo Black Mtn, W of San Mateo. 122 Comment
  CHSC56594  Digitalis purpurea Steven Triano 1988-5-24 168 San Mateo Along se side of Old La Honda Road ca 0.5 air miles e of SkyLonda. 405 Comment
  OBI22313  Digitaria sanguinalis Lewis S. Rose 1965-9-20 65108 San Mateo Burlingame, Trousdale Dr & Californica Dr 9 Comment
  CAS-BOT-BC150453  Diplacus aurantiacus Ned Cahill 1974-4-30 229 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  JEPS127891  Dipsacus sativus Adam C. Schneider with C. Matt Guilliams and Will Freyman 2014-6-24 301 San Mateo Crystal Springs Reservoir Comment
  RSA187291  Dipsacus sativus John H. Thomas 1964-11-15 10528 -A San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto Comment
  CAS-BOT-BC121862  Dirca occidentalis W. R. Dudley 1900-3-17 s.n. San Mateo Near top of Montara Mtn Comment
  CAS-BOT-BC121867  Dirca occidentalis G. Edelbrock 1975-2-8 1 San Mateo San Francisco Watershed 152 Comment
  JROH4200  Dirca occidentalis John H. Thomas 1967-3-13 12409 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4205  Dirca occidentalis John H. Thomas 1971-4-21 15770 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4206  Dirca occidentalis D. E. Breedlove 1971-5-11 19336 San Mateo Jasper Ridge Biological Preserve, Stanford University. 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
  OBI78487  Dirca occidentalis Lewis S. Rose 1964-3-9 64004 San Mateo N end of Crystal Springs Lake 122 Comment
  CAS-BOT-BC121861  Dirca occidentalis Roberta Gilbert 1933-5-14 s.n. San Mateo Near San Geronimo Creek Comment
  SJSU647  Dirca occidentalis S. R. Piazza 1941-3-2 San Mateo near S side Searsville L Comment
  POM277204  Disporum hookeri var. hookeri Lyman Benson 1937-8-15 8491 San Mateo Upper San Francisquito Creek, Mt. Range: Santa Cruz; Watershed: San Francisco Bay. 244 Comment
  RSA244344  Disporum hookeri var. hookeri C. W. Tilforth, John Dourley 1973-7-19 933 San Mateo Gazos Creek Road, between Butano and Big Basin State Parks Comment
  UC204220  Disporum smithii A. D. E. Elmer May, 1903 4697 San Mateo Butano Creek Comment
  CDA43448  Dittrichia graveolens John Beall 2015-10-7 PDR# 410 P06280645 San Mateo Pescadero; 6099 Pescadero Creek Road, near Dearborn Park Road. 0 Comment
  JROH3377  Dodecatheon clevelandii subsp. patulum Duncan M. Porter 1961-2-5 738 San Mateo Jasper Ridge Biological Preserve, Stanford University. In middle of corral at lower end of large meadow on crest of ridge Comment
  UC673409  Dodecatheon clevelandii subsp. patulum Elmer I. Applegate 1895-3-9 324 San Mateo near Woodside; near Woodside Comment
  POM78433  Dodecatheon hendersonii subsp. cruciatum A. D. E. Elmer 1903-04 s.n. San Mateo Woodsides. Comment
  JROH1509  Draba verna John Hunter Thomas 1982-4-4 20820 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  JROH5685  Draba verna John Rawlings 2015-2-15 1279 San Mateo Jasper Ridge Biological Preserve, Stanford University; in Trail 7 at Hillside Lab 150 Comment
  CAS-BOT-BC159536  Drymocallis glandulosa var. glandulosa W. R. Dudley 1896-4-18 s.n. San Mateo Pebble Beach at Pescadero - Santa Cruz Peninsula Comment
  CAS-BOT-BC159543  Drymocallis glandulosa var. glandulosa Javier Penalosa 1963-2-23 2634 San Mateo San Bruno Mtn., ravine south of Crocker Ave. 213 Comment
  CAS-BOT-BC159535  Drymocallis glandulosa var. glandulosa W. R. Dudley 1910-5-26 s.n. San Mateo Near Los Trancos Creek, along Judge Allen's - Santa Cruz Peninsula Comment
  RSA451896  Drymocallis glandulosa var. wrangelliana Glenn A. Gorelick 1967-4-14 s.n. San Mateo San Bruno Mts. overlooking Daly City near San Francisco. Comment
  UC903192  Drymocallis glandulosa var. wrangelliana Ethel Crum 1930-4-27 707 San Mateo Woodside 152 Comment
  CAS-BOT-BC67879  Dryopteris arguta John H. Thomas 1961-5-7 9296 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  JROH28  Dryopteris arguta Lawrence J. Winship 1974-11-2 5 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH31  Dryopteris arguta Lawrence J. Winship 1974-11-16 21 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH41  Dryopteris arguta John Hunter Thomas 1982-11-8 21257 C San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  UC766794  Dryopteris arguta R. F. Hoover 1941-2-12 4762 San Mateo nw of Summit Saratoga Comment
  POM281638  Dryopteris arguta Lyman Benson 1928-12-15 829 San Mateo Searsville Lake Dam 122 Comment
  POM281639  Dryopteris arguta Lyman Benson 1928-12-15 827 San Mateo La Honda, Santa Cruz Mountains 213 Comment
  SEINET11619627  Dryopteris arguta Unknown 1929-1 7295 San Mateo Kings Mt Comment
  CAS-BOT-BC71073  Dryopteris expansa George Oberlander 1950-3-18 581 San Mateo unspecified Comment
  CAS-BOT-BC428367  Dudleya farinosa Robt. T. Orr 1961-7-28 s.n. San Mateo Ano [Ano] Nuevo Island Comment
  CDA20206  Echinochloa colona J. Eide 2003-8-22 PDR 1424868 San Mateo San Francisco Bay Area; Residence at 74 Atherton Ave, Atherton. 0 Comment
  CAS-BOT-BC197079  Echinochloa crus-galli Ira L. Wiggins 1985-9-28 22301 San Mateo N side of San Francisquito Creek, ca 125 m upstream from Pope Street bridge, Menlo Park Comment
  CAS-BOT-BC208923  Echinochloa crus-galli Paul Reeberg; Jake Sigg; Peter Rubtzoff 1991-8-10 s.n. San Mateo P.G.&E. Marsh - San Bruno Mountains 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
  JROH5098  Echinochloa crus-galli Ann Lambrecht 2006-8-23 44 San Mateo Jasper Ridge Biological Preserve, Stanford University; dry bed of San Francisquito Creek below Dennis Martin marker 71 Comment
  UCR242653  Ehrharta erecta A. C. Sanders 2012-11-11 40518 San Mateo SF Bay Area, Daly City near Colma, between Junipero Serra Blvd. and San Pedro Rd. on Washington St. 56 Comment
  JROH4410  Eleocharis macrostachya Carol Zabel 2006-4-24 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. West side of "road" leading into Bike bowl, Comment
  CAS-BOT-BC112953  Eleocharis macrostachya W. R. Dudley 1908-6-19 s.n. San Mateo By pond S of Road from Tanforan to Jersey Farm Dairy. Comment
  UCD37959  Elymus glaucus Beecher Crampton 1962-6-11 6497 San Mateo San Mateo County, northern city limits of Pacifica, along State Highway 1, just southwest of its junction with Skyline Boulevard. Comment
  CAS-BOT-BC203686  Elymus glaucus subsp. glaucus H. A. Borthwick 1920-5-24 179 San Mateo Santa Cruz Mountain Peninsula. La Honda Comment
  JROH5103  Elymus glaucus subsp. glaucus John H. Thomas 1971-5-30 15979 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5963  Elymus glaucus subsp. glaucus John Rawlings 2017-5-24 2083 San Mateo Jasper Ridge Biological Preserve, Stanford University. SE corner of Sun Field Station along paved vehicle road to Sun Field Station loading zone 118 Comment
  SJSU15227  Elymus glaucus subsp. virescens Toni Corelli 2012-7-12 803 San Mateo Wavecrest, west of Highway 1 in Half Moon Bay 24 Comment
  CAS-BOT-BC235204  Elymus multisetus Phillip C. Wheeler 1965-6-20 s.n. San Mateo San Bruno Mountain. Sierra Point Comment
  JROH5122  Elymus multisetus John H. Thomas 1975-5-26 17910 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  LA14855  Elymus multisetus David D. Keck; 1932-5-6 1469 San Mateo Belmont Comment
  RSA159423  Elymus multisetus John H. Thomas 1961-5-14 9384 B San Mateo Serpentine road bank and outcropping just north of dam on San Mateo Creek. 122 Comment
  RSA6312  Elymus multisetus D. D. Keck 1932-5-6 1469 San Mateo Belmont Comment
  JROH5814  Epilobium brachycarpum Rebecca Reynolds 2016-8-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. On south-facing steep road bank opposite Tr. 14/Rd E intersection 92 Comment
  UC1537613  Epilobium brachycarpum Gordon H. True 1937-7-23 804 San Mateo along Skyline-Salada Beach Rd 60 Comment
  CAS-BOT-BC166140  Epilobium canum subsp. canum Lewis S. Rose 1965-9-4 65099 San Mateo Skyline Blvd. & Half Moon Bay Rd, Cahill Ridge 243 Comment
  RSA40474  Epilobium canum subsp. canum W. R. Dudley 1893-7-22 s.n. San Mateo Santa Cruz Mountain Peninsula: Guadalupe Valley Comment
  JROH3051  Epilobium ciliatum subsp. ciliatum John H. Thomas 1976-10-16 18424 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  UCR123145  Epilobium ciliatum subsp. glandulosum George K. Helmkamp, E. A. Helmkamp 2001-6-2 6796 San Mateo Central Coast, Purissima Creek Rd., 0.9 mi from Calif. Hwy 1(junction about 4 mi south of Half Moon Bay) 91 Comment
  RSA140611  Epilobium ciliatum subsp. watsonii John H. Thomas 1959-7-8 8019 San Mateo Pescadero Beach. Comment
  UC1191717  Epilobium ciliatum subsp. watsonii Malcolm A. Nobs and S. Galen Smith 1949-8-25 1548 San Mateo marshes Sharp Park Comment
  UC306521  Epilobium ciliatum subsp. watsonii A. D. E. Elmer July, 1903 4962 San Mateo Crystal Springs Lake Comment
  SEINET12868531  Epilobium ciliatum subsp. watsonii A. A. Heller 1906-1 8377 San Mateo Near Ocean View, San Francisco Comment
  JROH3070  Epilobium minutum John H. Thomas 1963-5-15 10092 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSC005987  Epipactis Randall Morgan 1995-6-28 2819 San Mateo Near Peters Creek just NW of Portola State Park Comment
  CAS-BOT-BC389734  Equisetum J. Lovelle 1973-8-5 48 San Mateo Pomponio Canyon Comment
  JROH58  Equisetum arvense John Hunter Thomas 1982-11-6 21194 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH63  Equisetum arvense John Hunter Thomas 1990-5-8 24856 San Mateo Jasper Ridge Biological Preserve, Stanford University 87 Comment
  RSA785879  Equisetum arvense Peter Rubtzoff 1978-4-2 9153 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  CAS-BOT-BC57598  Equisetum telmateia Elizabeth McClintock 1965-3-28 s.n. San Mateo Devil's Arroyo Comment
  CAS-BOT-BC57600  Equisetum telmateia Walter Knight; Irja Knight 1963-8-5 s.n. San Mateo Radio Road Comment
  RSA15287  Equisetum telmateia var. braunii C. B. Wolf 1927-4-3 255 San Mateo 1 mile above La Honda. Santa Cruz Mountains Comment
  JROH5879  Eragrostis pectinacea var. pectinacea Ann Lambrecht 2006-7-5 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Sand Hill Road fence 5 or 6 m from Bear Creek crossing. 89 Comment
  CAS-BOT-BC291202  Erechtites glomeratus E. McClintock; Phillip Wheeler 1965-5-23 s.n. San Mateo San Bruno Mountain. Top of ridge, east of Nike station Comment
  CDA4539  Erechtites minimus P. Arnaud 1958-7-13 839 -58 San Mateo San Mateo County Memorial Park. 0 Comment
  SEINET12141700  Eremocarpus setiger E. A. Purer 1933-1 5513 San Mateo Skyline Blvd Comment
  JROH3147  Eriastrum abramsii Richard L. Garber 1971-5-11 5 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC286882  Ericameria ericoides David D. Keck 1931-10-5 1286 San Mateo 1 mile north of Salada Beach Comment
  JEPS19177  Ericameria ericoides Dr. L. M. Newlon 1921-1-1 242 San Mateo Sea shore from Salada to Mussel Comment
  JROH646  Erigeron bonariensis John H. Thomas 1976-10-16 18411 San Mateo Jasper Ridge Biological Preserve, Stanford University; now dry delta in Searsville Lake at the mouth of Corte de Madera Creek Comment
  JROH5587  Erigeron foliosus var. foliosus Winkie Lennihan 1989-6-22 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; north of Hillside Lab just south of Trail 7 152 Comment
  JROH689  Erigeron foliosus var. foliosus W. R. Dudley 1895-6-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; top of ridge near Searsville Dam, Portola Valley Comment
  CAS-BOT-BC295076  Erigeron glaucus J. H. Thomas 1949-10-16 1150 San Mateo Just north of outlet of San Gregorio Creek 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-BC295087  Erigeron glaucus Walter Knight; Irja Knight; Elizabeth McClintock 1963-9-2 s.n. San Mateo San Bruno Mountain. Power Line Ridge Comment
  POM357521  Erigeron glaucus Glenn A. Gorelick 1967-4-14 s.n. San Mateo San Bruno Mountains, overlooking Daly City near San Francisco. Comment
  CAS-BOT-BC295075  Erigeron glaucus Daniel Cohen 1953-5-9 91 San Mateo Between Pescadero and San Gregorio Comment
  CAS-BOT-BC295081  Erigeron glaucus W. R. Dudley 1900-3-17 s.n. San Mateo Santa Cruz Mountain Peninsula. Montara Mountains Comment
  CDA28784  Eriodictyon californicum D. G. Kelch 2009-6-9 9 .391 San Mateo Santa Cruz Mtns.; King s Mtn. Rd. N of Summit Springs. Comment
  JROH2724  Eriodictyon californicum John H. Thomas 1973-5-5 16767 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2734  Eriodictyon californicum John Hunter Thomas 1992-7-24 25396 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM65463  Eriodictyon californicum A. D. E. Elmer 1903-04 4801 San Mateo Lake San Andreas Comment
  SEINET8731331 Image available Eriodictyon californicum L. S. Rose 1941-1 41288 San Mateo Kings Mountain 480 Comment
  CAS-BOT-BC248711  Eriogonum arborescens Elizabeth McClintock; Paul Reeberg 1988-9-1 s.n. San Mateo San Bruno Mountains. Above area where Caltrans had planted this species along Bayshore Boulevard 91 Comment
  RSA766407  Eriogonum caninum D. D. Keck 1931-10-5 1281 San Mateo Dam at north end of Crystal Springs Lake. Comment
  CHSC56987  Eriogonum fasciculatum var. foliolosum Josephine Boyd 1988-5-11 San Mateo Along ne side of Canada Road ca 0.8 mi s of its jct. with Hwy. 92. 114 Comment
  CAS-BOT-BC250540  Eriogonum gracile Gordon H. True 1937-7-31 831 San Mateo Alpine Road near Skyline Blvd. Comment
  POM165225  Eriogonum gracile var. gracile Edward L. Greene 1902-9-10 1675 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC251978  Eriogonum latifolium Barrett Anderson; Peter Rubtzoff 1988-4-22 3666 San Mateo San Bruno Mountain. Radio Road south of Guadalupe Canyon Parkway 365 Comment
  CAS-BOT-BC251979  Eriogonum latifolium John H. Thomas 1964-4-30 10352 San Mateo San Bruno Mountain in northern part of county 914 Comment
  CAS-BOT-BC251984  Eriogonum latifolium John H. Thomas 1963-5-20 10126 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  CHSC28679  Eriogonum latifolium M. S. Taylor 1978-7-31 1871 San Mateo Ano Nuevo State Reserve. 0 Comment
  POM145464  Eriogonum latifolium J. B. Feudge 1923-8-19 97 San Mateo Ano Nuevo Point 6 Comment
  RSA165299  Eriogonum latifolium C. F. Baker 1902-10-1 1748 San Mateo Pillar Point. Comment
  RSA176769  Eriogonum latifolium John H. Thomas 1963-7-19 10185 San Mateo Ano Nuevo Island, about 0.5 mile off shore and about 20 mi. NW of Santa Cruz. Comment
  RSA18452  Eriogonum latifolium Carl B. Wolf 1927-6-29 555 San Mateo South of Pebble Beach near Pescadero. Comment
  SD88537  Eriogonum latifolium Darley F. Howe 1972-6-25 San Mateo 7.5 miles north of Half Moon Bay Comment
  UC1032118  Eriogonum latifolium G. E. Sindel 1935-8-15 334 San Mateo 1/2 mi n Palomares; Sata Cruz Quadrangle Comment
  CAS-BOT-BC251990  Eriogonum latifolium Mrs. E. C. Sutliffe 1934-7-12 s.n. San Mateo Along the Ocean Shore road Comment
  SEINET11938065  Eriogonum latifolium E. H. Graham 1931-1 6932 San Mateo Ano Nuevo Point, S of San Francisco Comment
  SD38964  Eriogonum luteolum Edith A. Purer 1933-8-25 5510 San Mateo Near Schullser Blvd, on hillside, Skyline Blvd. Comment
  UC306654  Eriogonum luteolum var. luteolum A. D. E. Elmer June, 1903 4309 San Mateo Belmont Comment
  CAS-BOT-BC269005  Eriogonum nudum var. auriculatum Lewis S. Rose 1964-9-9 64074 San Mateo Emerald Lake, w. of Redwood City 243 Comment
  JROH3240  Eriogonum nudum var. auriculatum J. H. Thomas 1962-11-4 10013 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Westridge end. Comment
  CAS-BOT-BC304083  Eriophyllum confertiflorum Margaret A. Barry 1937-6-22 172 San Mateo Coal Mine Ridge Comment
  CDA5251  Eriophyllum confertiflorum P. Arnand 1959-5-31 2515 San Mateo Redwood City. 0 Comment
  RSA418518  Eriophyllum confertiflorum Jerry A. Powell 1972-3-10 910 San Mateo Mt. San Bruno Comment
  SEINET3386802 Image available Eriophyllum confertiflorum Lewis S. Rose 1933-5-17 33176 San Mateo Redwood City. Comment
  RSA0056420  Eriophyllum confertiflorum Lewis S. Rose 1933-5-17 s.n. San Mateo Redwood City. Comment
  HSC23786  Eriophyllum lanatum Mary Katherine Wicksten 1971-6-17 68 San Mateo Huddart Park; along road to family campground, near Madrone Area Comment
  CAS-BOT-BC301257  Eriophyllum lanatum var. arachnoideum D. E. Breedlove 1974-5-13 36217 San Mateo San Pedro Valley Park, Pacifica 152 Comment
  CAS-BOT-BC301271  Eriophyllum lanatum var. arachnoideum W. R. Dudley 1894-4-21 s.n. San Mateo Santa Cruz Mountain Peninsula. By county road below Dam, San Mateo Creek Comment
  CAS-BOT-BC124130  Eriophyllum latilobum Amos Arthur Heller 1907-5-28 8584 San Mateo Back of San Mateo on the Half Moon Bay road Comment
  JEPS28876  Eriophyllum latilobum V. F. Hesse 1962-6-26 3152 San Mateo 9 mi n of Saratoga Summit Highway 5; ; <State route 5 became state route 35> 609 Comment
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Sep 8 2011
  CAS-BOT-BC301977  Eriophyllum staechadifolium Alice Eastwood 1937-7-25 18890 San Mateo Pebble Beach, Pescadero Comment
  POM358130  Eriophyllum staechadifolium Glenn A. Gorelick 1967-5-5 s.n. San Mateo San Bruno Mts., overlooking Daly City near San Francisco Comment
  CAS-BOT-BC301971  Eriophyllum staechadifolium Carl B. Wolf 1930-11-5 1808 San Mateo 2 miles south of San Gregorio 60 Comment
  CAS-BOT-BC301972  Eriophyllum staechadifolium E. M. Zeile 1921-7-30 s.n. San Mateo 1/2 mile north of Pigeon Point lighthouse. Comment
  RSA116778  Eriophyllum staechadifolium W. R. Dudley 1898-1-4 s.n. San Mateo Bank of Ocean Shore- mouth of Waddell Creek. Santa Cruz Mountain Peninsula Comment
  CDA5407  Eriophyllum staechadifolium var. artemisiifolium F. E. Blanc 1960-6-28 4566 San Mateo 1 mile north of Half Moon Bay. 0 Comment
  JROH2595  Erodium botrys John H. Thomas 1969-4-12 14888 a San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  JROH2596  Erodium botrys John H. Thomas 1971-4-10 15762 C San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2604  Erodium cicutarium John H. Thomas 1974-4-4 17082 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU2305  Eryngium armatum C. W. Sharsmith 1950-4-16 6634 San Mateo near Pescadero Point near Pescadero Comment
  SEINET5549532  Erysimum capitatum H. S. Gentry 1931-1 7 San Mateo Collected 1.5 miles west of San Mateo, Half-moon Bay road. Comment
  CAS-BOT-BC54824  Erysimum franciscanum A. D. E. Elmer 1903-5-1 4480 San Mateo Crystal Springs Lake. Comment
  CAS-BOT-BC54826  Erysimum franciscanum Alice Eastwood 1914-3-12 s.n. San Mateo San Bruno Hills. Comment
  CAS-BOT-BC54860  Erysimum franciscanum G. B. Rossbach; R. P. Rossbach 1939-5-12 913 San Mateo 1.5 mile north of Sharp Park (Salada Beach). Comment
  CAS-BOT-BC54880  Erysimum franciscanum Reed Clark Rollins 1942-4-30 3007 San Mateo Southeast slope of the San Bruno Hills, about 1 mile west of Brisbane. Comment
  POM143100  Erysimum franciscanum Alice Eastwood 1903-2-8 3237 San Mateo Spring Valley Comment
  RSA102129  Erysimum franciscanum G. B. Rossbach 1955-3-12 568 San Mateo Inland and SE of Devil s Slide, W edge of Montata Mountains 122 Comment
  RSA396108  Erysimum franciscanum Quinn P. Sinnott 1976-2-9 602 San Mateo Path leading from Radio Road, northern end of San Bruno Mountains 305 Comment
  RSA0001945  Erysimum franciscanum G. B. Rossbach 1955-3-26 572 San Mateo High seaward slope 2 mi. S of San Francisco line & 3 mi. N of Sharp Peak (Salada). Comment
  CAS-BOT-BC403531  Eschscholzia californica Louis F. Pitelka 1973-4-30 s.n. San Mateo Bolsa Point, about 1 mi N of Pigeon Point and about 39 mi S of San Francisco Comment
  CAS-BOT-BC403537  Eschscholzia californica A. D. E. Elmer 1903-6-1 4680 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC403550  Eschscholzia californica Ned Cahill 1975-1-8 393 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  UC204262  Eschscholzia californica A. D. E. Elmer June, 1903 4680 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC403532  Eschscholzia californica W. R. Dudley 1894-3-25 s.n. San Mateo Santa Cruz Peninsula. Near Bebble Beach at Pescadero Comment
  CAS-BOT-BC202738  Euonymus occidentalis C. B. Wolf 1931-8-21 2333 San Mateo 1/2 mile above east base of La Honda Grade, Santa Cruz Mts. 243 Comment
  CAS-BOT-BC202739  Euonymus occidentalis A. D. E. Elmer 1903-6-1 4280 San Mateo Lake San Andreas Comment
  RSA116735  Euonymus occidentalis W. R. Dudley 1910-5-26 s.n. San Mateo Los Trancos Creek, above Judge Allen's; Santa Cruz Mountain Peninsula. Comment
  RSA116766  Euonymus occidentalis Elmer I. Applegate 1895-5-11 s.n. San Mateo Near Searsville Dam; Santa Cruz Mountain Peninsula. Comment
  JROH1796  Euonymus occidentalis var. occidentalis Volney Rattan May s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; at Searsville Comment
  UCD142398  Euphorbia helioscopia J. H. Thomas 1959-7-8 8014 San Mateo About 1/4 mile west of center of Pescadero on road toward the coast. Comment
  JROH1968  Euphorbia oblongata Ann Lambrecht 2012-12-11 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; beside footbridge on Trail 12 Comment
  JROH5892  Euphorbia oblongata Ann Lambrecht 2008-9-3 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; about 3m uphill to the west from Bear Creek Crossing, at the Preserve boundary Comment
  JROH1974  Euphorbia spathulata John H. Thomas 1974-4-4 17083 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH531  Eurybia radulina John Rawlings 2011-10-18 1089 San Mateo Jasper Ridge Biological Preserve, Stanford University. SW end of Road C bridge over San Francisquito Creek. 88 Comment
  CAS-BOT-BC310621  Eurybia radulina L. R. A. 1902-9-28 3004 San Mateo Portola - Santa Cruz Mts. Comment
  CAS-BOT-BC310622  Eurybia radulina George Oberlander 1949-7-10 364 San Mateo San Francisco Watershed Reserve. On Sawyer Ridge Comment
  CAS-BOT-BC310720  Euthamia occidentalis James McMurphy 1905-10-29 s.n. San Mateo Above Portola Comment
  RSA507774  Euthamia occidentalis J. C. Semple, S. Heard 1986-8-23 8596 San Mateo 7.5 km N of Santa Cruz County line on CA-1 Comment
  UCSC007760  Euthamia occidentalis Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC413877  Fallopia convolvulus Ira L. Wiggins 1935-8-24 8159 San Mateo 2 mi. E. of Half Moon Bay Comment
  UCD98886  Fallopia convolvulus J. D. Skoss 1948-7-25 47 San Mateo San Vicente Canyon near Montara. Comment
  JROH5154  Festuca arundinacea John Hunter Thomas 1982-6-7 21034 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5160  Festuca arundinacea John Hunter Thomas 1987-5-26 24320 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET10887997  Festuca arundinacea P. Rubtzoff 1976-6-13 Rubtzoff 8633 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction and northwest of Fog Forest. Comment
  JROH5471  Festuca bromoides Stephen N. Turitzin 1976-3-7 6 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS18167  Festuca californica Rimo Bacigalupi with Galen Smith, L. Dempster, and T. Robbins 1956-5-15 5645 San Mateo first ridge w San Andreas Lake (on road to Pilarcitos Lake) 198 Comment
  LA130809  Festuca californica David D. Keck; 1932-5-11 1499 San Mateo above Woodside on La Honda rd, E slope of Santa Cruz Mountains Comment
  CAS-BOT-BC278478  Festuca idahoensis Elizabeth McClintock 1964-4-17 s.n. San Mateo San Bruno Mountain Comment
  CAS-BOT-BC278479  Festuca idahoensis Elizabeth McClintock 1963-6-9 s.n. San Mateo San Bruno Mountain Comment
  JROH5489  Festuca microstachys S. J. McNaughton 1966-3-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. East slopes of serpentine grasslands in Ehrlich's area H. Comment
  JROH5478  Festuca microstachys Duncan M. Porter 1960-4-18 642 A San Mateo Jasper Ridge Biological Preserve, Stanford University. Meadow near crest of N-facing slope above Webb Ranch. Comment
  JROH5508  Festuca octoflora Herb Dengler 1963-5-26 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Top of Ridge. Comment
  CAS-BOT-BC279050  Festuca rubra Elizabeth McClintock; Paul Reeberg 1989-5-19 s.n. San Mateo San Bruno Mountains. Upper slopes of Firth Canyon, above Brisbane 182 Comment
  RSA86699  Festuca rubra D. D. Keck 1932-5-6 1478 San Mateo Above Millbrae Highlands Comment
  SEINET3386774 Image available Filago californica Lewis S. Rose 1933-4-30 33133 San Mateo Redwood City, open hills Comment
  CAS-BOT-BC304294  Filago pyramidata Walter & Irja Knight 1967-5-16 s.n. San Mateo San Bruno Mt. Randolph Ave, South San Francisco Comment
  JROH246  Foeniculum vulgare Le Roy Abrams 1901-10-1 1025 San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Comment
  SEINET11119270  Foeniculum vulgare K. Thorne, J. Chandler 1986-7-25 4945 San Mateo Half Moon Bay, 2 miles S of Moss Beach at Dune Beach, adjacent to the Pacific Ocean. Comment
  RSA0051577  Fragaria californica W. M. Arbaugh 1968-4-10 267 San Mateo Butano State Park. Comment
  RSA133096  Fragaria californica Donald A. Johansen 1933-5-18 709 San Mateo Along road from Portola to La Honda. Comment
  CAS-BOT-BC437035  Fragaria chiloensis Daniel Cohen 1953-5-9 99 San Mateo Top of bluff between Pescadero and San Gregorio Comment
  CAS-BOT-BC437036  Fragaria chiloensis Ray C. Bennett 1952-4-26 17 San Mateo Pescadero Beach Comment
  JROH3672  Fragaria vesca John Hunter Thomas 1990-4-26 24812 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near redwood grove near Rattlesnake Rock Comment
  JROH3674  Fragaria vesca John Hunter Thomas 1991-4-25 24999 San Mateo Jasper Ridge Biological Preserve, Stanford University. Redwood area below dam Comment
  CAS-BOT-BC457528  Fragaria vesca subsp. californica J. H. Thomas 1949-3-29 192 San Mateo Kings Mountain. Comment
  CAS-BOT-BC457529  Fragaria vesca subsp. californica E. W. Rust 1987-4-27 129 San Mateo Kings Mountain. Comment
  CAS-BOT-BC52675  Frangula californica subsp. californica George Oberlander 1949-7-30 246 San Mateo Crest of Sweeney Ridge Comment
  CAS-BOT-BC52677  Frangula californica subsp. californica W. R. Dudley 1899-5-14 s.n. San Mateo Baden Brook hills Comment
  CAS-BOT-BC52683  Frangula californica subsp. californica Walter Knight; Irja Knight 1965-5-15 1108 San Mateo Pig Ranch Ravine Comment
  JROH3535  Frangula californica subsp. californica John H. Thomas 1961-6-14 9540 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC53597  Frangula californica subsp. tomentella John H. Thomas 1969-10-19 15484 San Mateo near Canada College, Redwood City, just off of Farm Hill Blvd Comment
  JROH3536  Frangula californica subsp. tomentella John H. Thomas 1968-5-22 14459 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3571  Frangula californica subsp. tomentella John H. Thomas 1974-5-29 17409 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CHSC57013  Frankenia salina Josephine Boyd 1988-5-3 San Mateo On Sand Point in the Menlo Park Baylands at the e end of the Embarcadero ca 0.5 mi e of the Palo Alto Municipal Airport and 0.3 mi nw of the San Mateo County-Santa Clara County boundary. 4 Comment
  CAS-BOT-BC223553  Fraxinus latifolia A. D. E. Elmer 1903-7-1 4615 San Mateo San Mateo Creek Comment
  SEINET6694664 Image available Fraxinus oregona W. R. Dudley 1893-1 San Mateo San francisquita creek near big tree Comment
  CAS-BOT-BC212964  Fremontodendron californicum W. R. Dudley 1897-12-29 s.n. San Mateo Butano Creek, Santa Cruz Peninsula Comment
  CAS-BOT-BC130124  Fritillaria affinis Phillip C. Wheeler 1965-6-21 s.n. San Mateo Sierra Point Comment
  CAS-BOT-BC130146  Fritillaria affinis J. H. Thomas 1954-6-11 4268 San Mateo Along San Gregorio Creek about 1.5 mi. W. of La Honda 106 Comment
  POM169607  Fritillaria affinis C. F. Baker 1903-03 5047 San Mateo Crystal Springs Lake. Comment
  UC3641  Fritillaria affinis J. Burtt Davy 1895-4-20 1056 San Mateo Lake Pilarcitos Comment
  UC803943  Fritillaria affinis G. L. Stebbins Jr. 1949-6-5 3984 San Mateo 1/2 mi n of La Honda (along highway) Comment
  POM196512  Fritillaria affinis Lucile Roush 1917-3-31 s.n. San Mateo Santa Cruz Mountain peninsula; Sierra Morena Comment
  SEINET12054471  Fritillaria affinis Cummings, McCallum, G. A. 1933-1 s.n. San Mateo near La Honda Comment
  JEPS61962  Fritillaria biflora var. ineziana Inez Smith 1914-3-12 San Mateo San Mateo Comment
  RSA13540  Fritillaria liliacea H. E. Parks, S. T. Parks 1930-3-10 400 San Mateo Spring Valley Lakes Comment
  SDSU20660  Fritillaria liliacea Sean Ryan 2011-3-19 77 San Mateo On E side of Serpentine Loop trail, 175 yds N of the service road entering from Robertson Way. Edgewood County Park. 209 Comment
  UC535103  Fritillaria liliacea H. E. and S. T. Parks 1930-3-10 400 San Mateo Spring Valley Lakes 152 Comment
  UC1371057  Fritillaria liliacea Theodore F. Niehaus 1969-3-15 839 San Mateo 0.2 mi w of Polehouse Road (w side of Tower Road) Comment
  RSA0037218  Fumaria Peter Rubtzoff 1988-5-12 9921 San Mateo San Bruno Mountain. Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction; NW part of the area, near the old Guadalupe Road between Bog Trail and Saddle Trail Junctions. Comment
  CAS-BOT-BC258909  Galium Peter Rubtzoff 1988-6-25 9928 San Mateo Menlo Park, on Willow Road near Alma Street. Comment
  JROH3824  Galium John Hunter Thomas 1989-4-10 24626 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD165021  Galium aparine Peter Rubtzoff; Roman Gankin 1975-5-21 7966 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  RSA130681  Galium aparine Harry A. Dutton 1900-3-25 s.n. San Mateo The Santa Cruz Peninsula Comment
  SEINET12285509  Galium californicum Unknown 1933-1 10379 San Mateo White House Creek Comment
  UCR121582  Galium californicum subsp. californicum George K. Helmkamp, E. A. Helmkamp 1999-6-28 4982 San Mateo Pescadero Creek Watershed, Pescadero Road just north of Loma Mar 107 Comment
  POM284029  Galium californicum subsp. californicum Delzie Demaree 1933-6-23 10379 San Mateo White House Creek. Comment
  JROH3794  Galium murale John H. Thomas 1971-4-21 15765 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3788  Galium murale John H. Thomas 1961-4-29 9177 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3792  Galium murale John H. Thomas 1968-3-17 14189 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CDA33978  Galium porrigens D. G. Kelch, David Gernandt, Steffi Ickert-Bond, Yingli Guo 2011-4-22 11 .148 San Mateo Santa Cruz Mountains.; Skyline Blvd, ~ 5 miles W of Los Altos. Comment
  JROH3809  Galium porrigens var. porrigens D. E. Breedlove 1971-5-31 19377 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  JROH802  Gamochaeta ustulata John Hunter Thomas 1987-5-5 24254 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA502345  Gamochaeta ustulata D. W. Taylor 1988-4-8 9506 San Mateo San Bruno Mountain, northern slope of southeast ridge of the mountain, near the ridgecrest. 238 Comment
  CAS-BOT-BC194560  Garrya elliptica Lewis S. Rose 1962-2-5 62001 San Mateo San Andreas Lake 152 Comment
  CAS-BOT-BC278665  Gastridium phleoides C. F. Leitholt 1894-7-30 s.n. San Mateo Santa Cruz Mountain Peninsula. La Honda Comment
  UCD66567  Gastridium phleoides A. A. Beetle 1942-6-11 3599 San Mateo Rt. 5, 15 miles south of San Bruno. Comment
  UC1100357  Gastridium ventricosum Malcolm A. Nobs and S. Galen Smith 1949-8-26 1610 San Mateo marshy stream bank about 1 mi s Pigeon Point Comment
  CAS-BOT-BC59640  Gaultheria shallon Herbert L. Mason 1921-7-1 s.n. San Mateo Pescadero Cr. Comment
  JROH1999  Genista monspessulana John H. Thomas 1960-4-22 8594 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2005  Genista monspessulana John Hunter Thomas 1988-4-7 24376 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2006  Genista monspessulana John H. Thomas 1961-5-5 9208 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek below Searsville Dam 76 Comment
  JROH2011  Genista monspessulana John Hunter Thomas 1981-4-30 20518 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2617  Geranium dissectum John Hunter Thomas 1983-4-20 21533 San Mateo Jasper Ridge Biological Preserve, Stanford University. Low-flow crossing. Comment
  RSA0028488  Geranium dissectum John H. Thomas 1964-4-30 10339 San Mateo Near intersection of El Camino Real and F St, Colma Comment
  UCR279851  Geranium dissectum Peter Rubtzoff 1976-5-22 8546 San Mateo San Bruno Mountains, 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction 213 Comment
  CAS-BOT-BC166682  Geranium dissectum Peter Rubtzoff 1976-5-22 8546 San Mateo San Bruno Mountains. Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction. Comment
  JROH2623  Geranium molle John H. Thomas 1955-5-6 5005 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2629  Geranium molle John Hunter Thomas 1978-4-8 19059 C San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA128903  Gilia achilleifolia subsp. multicaulis Harry A. Dutton 1900-4-19 A. San Mateo Santa Cruz Peninsula Comment
  UC880097  Gilia clivorum Lewis S. Rose 1937-4-24 37229 A San Mateo Emerald Lake 91 Comment
  UC184620  Gilia tricolor subsp. tricolor Mrs. Inez Ray Smith 1915-5-26 San Mateo near Crystal Springs (Hillsborough); , near Crystal Springs Comment
  CAS-BOT-BC303680  Glebionis coronaria J. H. Thomas 1961-5-7 9321 San Mateo San Bruno Mt. At W end of mountain 243 Comment
  CDA6003  Gnaphalium canescens subsp. beneolens A. C. Browne 1950-8-12 San Mateo Alpine Creek. 0 Comment
  RSA218036  Gnaphalium chilense Walter Knight, I. Knight 1963-8-5 s.n. San Mateo Radio Road, San Bruno Mountain Comment
  POM224080  Gnaphalium luteoalbum J. T. Howell 1935-1-13 12578 San Mateo Lake San Andreas. Comment
  JROH787  Gnaphalium palustre John Hunter Thomas 1980-11-27 20186 San Mateo Jasper Ridge Biological Preserve, Stanford University; delta Comment
  POM223282  Gnaphalium ramosissimum L. S. Rose 1935-8-13 35568 San Mateo Salada. 30 Comment
  RSA91713  Gnaphalium ramosissimum F. W. Peirson 1925-9-13 6426 San Mateo Rockaway beach Comment
  RSA201473  Grindelia camporum J. T. Howell 1964-12-6 41032 San Mateo Near Southern Pacific RR station, Millbrae. Comment
  CAS-BOT-BC304505  Grindelia hirsutula David D. Keck 1931-9-27 1273 San Mateo Dumbarton Bridge Comment
  CAS-BOT-BC304510  Grindelia hirsutula David D. Keck 1931-9-27 1273 San Mateo Dumbarton Bridge Comment
  CAS-BOT-BC304528  Grindelia hirsutula Elizabeth McClintock 1967-9-24 s.n. San Mateo San Bruno Mountain. Crocker Avenue Comment
  CAS-BOT-BC304529  Grindelia hirsutula Saichi Kawahara 1969-6-15 426 San Mateo Pescadero Beach, 150 yards south of mouth of Pescadero Creek, Highway 1 4 Comment
  CAS-BOT-BC304541  Grindelia hirsutula L. R. Abrams 1918-4-30 7064 San Mateo Bayshore Road, San Bruno Hills Comment
  CAS-BOT-BC304542  Grindelia hirsutula W. R. Dudley 1894-5-30 s.n. San Mateo Santa Cruz Peninsula. Near Redwood City Comment
  CAS-BOT-BC304561  Grindelia hirsutula Lewis S. Rose 1933-6-9 33221 San Mateo San Andreas Lake Comment
  CAS-BOT-BC304562  Grindelia hirsutula David D. Keck 1932-5-25 1783 San Mateo Hills two miles west of Belmont Comment
  CAS-BOT-BC304567  Grindelia hirsutula Lewis S. Rose 1933-6-9 33221 San Mateo San Andreas Lake Comment
  JEPS7750  Grindelia hirsutula Peter H. Raven 1950-4-30 1959 San Mateo Montara Montara (windblown slopes facing ocean) 15 Comment
  JEPS78925  Grindelia hirsutula Rimo Bacigalupi with G. T. Robbins 1954-6-18 4550 San Mateo road bank along Alpine Road 1/4 mi w Skyline Boulevard 701 Comment
  SJSU1660  Grindelia hirsutula R. E. Bousquet 1955-5-14 40 San Mateo E side Crystal Springs Reseroir Comment
  UC1118555  Grindelia hirsutula G. E. Sindel 1935-7-25 309 San Mateo 0.25 mi n of Pescadero Creek (near mouth) Santa Cruz Quadrangle 6 Comment
  UC206210  Grindelia hirsutula Katharine Brandegee 1917-7-15 San Mateo Moss Beach Comment
  CAS-BOT-BC304547  Grindelia hirsutula Alice Eastwood; John Thomas Howell 1939-7-9 7437 San Mateo Hills sw. of Daly City 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
  POM216546  Grindelia stricta var. angustifolia D. D. Keck 1931-9-27 1273 San Mateo Dumbarton Bridge. Comment
  SEINET11835893  Grindelia stricta var. angustifolia E. A. Purer 1933-1 5525 San Mateo no further locality Comment
  UC1132185  Hainardia cylindrica A. Hormay 1932-5-29 San Mateo San Bruno 0 Comment
  SJSU16061  Hedypnois cretica Toni Corelli 2010-4-9 514 San Mateo Rockaway Headlands, southwest of Rockaway Beach, Pacifica Comment
  CAS-BOT-BC306285  Hedypnois cretica Thayne C. Parks 1963-5-28 321 San Mateo In Woodside Road, about 2 miles east of summit Comment
  JEPS35417  Helenium puberulum L. M. Newlon 1921-7-30 254 San Mateo seashore from Salada to Mussel Comment
  CAS-BOT-BC309527  Helenium puberulum Walter Knight; Irja Knight; James B. Roof 1963-8-4 s.n. San Mateo San Bruno Mountain. April Brook Comment
  POM54388  Helenium puberulum A. D. E. Elmer 1903-07 4968 San Mateo San Mateo Comment
  RSA523310  Helenium puberulum Gordon H. True Jr. 1937-7-23 805 San Mateo Along Skyline Blvd.-Salada Beach Road. 305 Comment
  RSA70702  Helenium puberulum L. S. Rose 1949-8-10 49157 San Mateo Skyline Blvd, W of Tanforan 122 Comment
  UC917226  Helenium puberulum W. A. Harvey and J. M. Tucker 1948-6-28 1701 San Mateo on ridge ca 3 mi n Pescadero Comment
  CAS-BOT-BC305630  Helianthus californicus L. R. Abrams 1902-9-21 2989 San Mateo Woodside - Crystal Springs Comment
  CAS-BOT-BC305921  Helminthotheca echioides Ira L. Wiggins 1979-8-26 22243 San Mateo Alley between Central and Woodland Avenues, running from Pope to Gilbert Streets, Menlo Park Comment
  CAS-BOT-BC305922  Helminthotheca echioides Ira L. Wiggins 1979-8-26 22243 San Mateo Alley between Central and Woodland Avenues, running from Pope to Gilbert Streets, Menlo Park Comment
  CAS-BOT-BC305927  Helminthotheca echioides Walter Knight; Irja Knight 1963-8-5 s.n. San Mateo San Bruno Mountain. Colma Canyon Comment
  CAS-BOT-BC314938  Hemizonia congesta subsp. luzulifolia Cherie Wetzel 1969-6-20 886 San Mateo Near Canada College, Redwood City just off of Farm Hill Blvd. Comment
  CAS-BOT-BC314939  Hemizonia congesta subsp. luzulifolia John H. Thomas 1969-10-19 15480 San Mateo Near Canada College, Redwood City just off of Farm Hill Blvd. Comment
  JROH866  Hemizonia congesta subsp. luzulifolia John H. Thomas 1967-11-5 14129 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SBBG28541  Hemizonia congesta subsp. luzulifolia L. R. Abrams 1914-7-15 5140 San Mateo Crystal Springs Comment
  UC897724  Hemizonia congesta subsp. luzulifolia Lewis S. Rose 1935-9-21 35652 San Mateo Redwood City Comment
  CAS-BOT-BC314915  Hemizonia congesta subsp. luzulifolia Duncan M. Porter 1960-10-12 726 San Mateo Meadow at the crest of ridge above Webb Ranch (area H), Jasper Ridge Biological Preserve Comment
  SEINET6205044  Hemizonia corymbosa L. S. Rose 1965-1 65100 San Mateo Skyline Blvd & Halt Moon Bay Rd Comment
  RSA52665  Hemizonia corymbosa subsp. corymbosa I. L. Wiggins 1949-7-2 12199 San Mateo Pescadero Beach. Comment
  POM284876  Hemizonia corymbosa subsp. corymbosa Lyman Benson 1934-7-4 6102 San Mateo Moss Beach; Pacific Ocean watershed 15 Comment
  POM296654B  Hemizonia luzulifolia L. S. Rose 1941-10-24 41470 San Mateo Belmont. 6 Comment
  SEINET8734814 Image available Hemizonia pungens L. S. Rose 1941-1 41463 San Mateo along the Bayshore Boulevard, San Mateo 3 Comment
  RSA18316  Heracleum maximum C. B. Wolf 1929-5-20 3720 San Mateo No. end of Searsville Lake. Comment
  JROH878  Hesperevax sparsiflora var. sparsiflora H. A. Borthwick 1920-4-12 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH892  Hesperevax sparsiflora var. sparsiflora John Hunter Thomas 1981-5-25 20634 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH895  Hesperevax sparsiflora var. sparsiflora John Hunter Thomas 1984-4-2 23273 3 A San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge fence Comment
  CAS-BOT-BC403867  Hesperocnide tenella George Oberlander 1950-4-16 695 San Mateo San Francisco Watershed Reserve. Pilarcitos Canyon Comment
  SJSU7855  Hesperolinon congestum J. R. Verbarg 1955-5-14 San Mateo Redwood City Hills back of Redwood City Comment
  RSA30460  Hesperolinon congestum A. A. Heller 1907-5-28 8572 San Mateo Near Crystal Springs. Comment
Read comments
May 14 2015
  OBI12527  Hesperolinon micranthum Lewis S. Rose 1956-6-11 56093 San Mateo Emerald Lake, Hills W of Redwood city 183 Comment
  CAS-BOT-BC148463  Heteromeles arbutifolia John H. Thomas 1969-10-19 15485 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  UC860403  Heteromeles arbutifolia Lewis S. Rose 1937-10-31 37726 San Mateo hills w Tanforan 91 Comment
  CAS-BOT-BC310272  Heterotheca grandiflora Philip Wheeler 1966-10-16 s.n. San Mateo San Bruno Mountain. Crocker Industrial Park Comment
  CAS-BOT-BC310763  Heterotheca sessiliflora subsp. echioides W. R. Dudley 1895-9-21 s.n. San Mateo Santa Cruz Mountain Peninsula. By road near Bay back of Menlo Park Comment
  JROH909  Heterotheca sessiliflora subsp. echioides Carol Zabel 2006-7-24 59 San Mateo Jasper Ridge Biological Preserve, Stanford University; slope by trail to old boat landing below Field Station Comment
  RSA184913  Heterotheca sessiliflora subsp. echioides L. S. Rose 1966-8-20 66087 San Mateo San Bruno Mountain. 366 Comment
  CAS-BOT-BC420894  Heuchera micrantha var. diversifolia Margaret A. Barry 1938-5-29 262 San Mateo Corte Madera Creek near Coal Mine Ridge Comment
  CAS-BOT-BC424428  Heuchera pilosissima Ira L. Wiggins 1925-5-24 1742 San Mateo Along county road from Pescadero to Pebble Beach just before coming to the artichoke lands of the American Produce Co. Comment
  CAS-BOT-BC424429  Heuchera pilosissima W. R. Dudley 1900-3-17 s.n. San Mateo By down grade from Montara Mts to San Pedro Comment
  POM52661  Hieracium albiflorum C. F. Baker 1902-1-15 236 San Mateo Kings Mountain. West side of King's Mountain. Comment
  CAS-BOT-BC319635  Hieracium albiflorum W. R. Dudley 1894-7-7 s.n. San Mateo Bear Gulch Road, Santa Cruz Peninsula 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
  UC768776  Hierochloe occidentalis R. F. Hoover 1939-3-3 3898 San Mateo on La Honda road above Portola Comment
  CAS-BOT-BC55441  Hirschfeldia incana Ned Cahill 1974-5-30 331 San Mateo About 3 miles westward from Redwood City. Near the intersection of Canada and Edgewood Roads. Next to Edgewood Road. Comment
  JROH1532  Hirschfeldia incana John H. Thomas 1964-11-15 10528 San Mateo Jasper Ridge Biological Preserve, Stanford University; above Searsville Lake Comment
  JROH1534  Hirschfeldia incana John Hunter Thomas 1977-6-16 18749 San Mateo Jasper Ridge Biological Preserve, Stanford University; near old racing oval Comment
  CAS-BOT-BC55437  Hirschfeldia incana Walter Knight; Irja Knight 1964-5-4 s.n. San Mateo San Bruno Mountains. Colma Canyon. Comment
  RSA17940  Holcus lanatus C. B. Wolf 1927-6-13 s.n. San Mateo La Honda Grade. Comment
  RSA112372  Holodiscus discolor Lucile Roush 1918-3-31 s.n. San Mateo Santa Cruz Peninsula; Sierra Morena. Comment
  RSA785878  Hordeum brachyantherum Peter Rubtzoff 1976-5-22 8545 San Mateo 'Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  JROH5221  Hordeum brachyantherum subsp. californicum John H. Thomas 1973-6-10 16820 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC285047  Hordeum depressum Le Roy Abrams 1901-5-1 1651 San Mateo Cooley's Landing Comment
  POM295720  Hordeum depressum Lyman Benson 1930-5-12 2125 San Mateo Stanford University. 152 Comment
  CAS-BOT-BC285153  Hordeum marinum subsp. gussoneanum Le Roy Abrams 1901-5-1 1660 San Mateo Cooley's Landing Comment
  JROH5238  Hordeum marinum subsp. gussoneanum John H. Thomas 1971-5-30 15953 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5251  Hordeum marinum subsp. gussoneanum John Hunter Thomas 1992-5-14 25227 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM205100  Hordeum murinum subsp. glaucum Copeland 1903-6-9 3334 San Mateo Montara Point. Comment
  CAS-BOT-BC173824  Hordeum murinum subsp. leporinum Peter Rubtzoff 1976-6-13 8630 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction. In area of uppermost part of East Fork Colma Creek, at the northwest corner of Fog Forest. Comment
  SD99477  Hordeum murinum subsp. leporinum Ira L. Wiggins 1975-4-17 22143 San Mateo NE side of Southern Pacific right-of-way, between San Francisquito Creek and Willow Road, Menlo Park Comment
  JEPS34468  Horkelia californica L. R. Heckard and R. Bacigalupi 1963-7-2 1357 San Mateo Trail to Montara Peak (NW slope) above old county road 304 Comment
  CAS-BOT-BC536141  Horkelia californica W. R. Dudley 1897-10-11 s.n. San Mateo Near Half Moon Bay (Spanishtown) Comment
  CAS-BOT-BC536142  Horkelia californica Josephine D. Randall 1907-7-23 338 San Mateo Near Crystal Springs Lake, Santa Cruz Peninsula Comment
  CAS-BOT-BC536147  Horkelia californica L. R. Abrams; I. L. Wiggins 1939-6-3 436 San Mateo Half mile inland from the sand dunes, Ano Nuevo Point Comment
  SBBG32394  Horkelia californica var. californica L. S. Rose 1966-8-20 San Mateo head of Colma Cyn, San Bruno Mtn 205 Comment
  JEPS47190  Horkelia cuneata subsp. cuneata E. K. Crum 1930-4-27 710 San Mateo near Pescadero (n of Davenport); Santa Cruz Coast Comment
  UC162493  Horkelia cuneata subsp. sericea A. A. Heller 1906-6-8 8374 San Mateo near Ocean View; San Francisco Comment
  RSA0064471  Hydrocotyle moschata A. C. Sanders 2014-8-3 41241 San Mateo South San Francisco, Utah Ave. near Harbor Way, north of S.F. Intl. Airport. 4 Comment
  CDA5497  Hydrocotyle moschata E. L. Labadie 1962-3-15 San Mateo Jack Fujiki property, 135 N. Idaho, San Mateo . 0 Comment
Read comments
Aug 7 2014
  UCD160238  Hypericum canariense Christopher Dillis 2015-5-15 2 San Mateo South of Pescadero on Hwy 1 (Cabrillo Hwy), 400 m south of Highway Brewing Company, then east 120 m on unmarked 1-lane dirt road; 10 m southwest of intersection with Old Coast Highway. 200 Comment
  JROH923  Hypochaeris glabra John Hunter Thomas 1989-5-9 24720 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC101765  Hypochaeris glabra Katharine Brandegee 1891-6-1 San Mateo South San Francisco Comment
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Apr 1 2009
  UCSC007758  Hypochaeris glabra Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC311479  Hypochaeris radicata J. H. Thomas 1949-10-16 1155 San Mateo Just north of outlet of San Gregorio Creek Comment
  SD39737  Hypochaeris radicata Edith A. Purer 1932-7-18 4005 San Mateo Half Moon Bay Comment
  UCD133480  Hypochaeris radicata J. D. Skoss 1948-8-22 111 San Mateo San Vicente Canyon, near Montara. Comment
  OBI33307  Ilex aquifolium Marcia Meissner 1965-5-7 5 San Mateo Growing in garden at 139 Scenic Dr., Redwood City Comment
  SJSU8192  Ipomoea indica D. W. Allen 1978-11-25 San Mateo grounds of residence Comment
  CDA34446  Iris douglasiana M. Beyers, Z. Bakman, L. Feely, & D. Sozanni 2011-4-4 877 San Mateo Pacifica: San Pedro Valley County Park, along Brooks Creek Trail. 148 Comment
  UC1252086  Iris douglasiana J. H. Thomas 1959-4-4 7656 San Mateo about 0.7 mi s Gazos Creek (about 6.5 mi s-ward from Pescadero) 45 Comment
  POM263704  Iris douglasiana R. C. Foster 1937-4-30 213 San Mateo Between San Bruno and the Skyline Boulevard Comment
  RSA3090  Iris douglasiana Carl B. Wolf 1931-8-21 2332 San Mateo 0.5 mi above east base of La Honda Grade; Santa Cruz Mountains 244 Comment
  UCSB880  Iris douglasiana Walker, Clifford 1954-4-20 San Mateo junction of Skyline Blvd and Highway to Half Moon Bay Comment
  CAS-BOT-BC133654  Iris longipetala W. R. Dudley 1894-3-1 s.n. San Mateo Near South San Francisco Comment
  CAS-BOT-BC133674  Iris longipetala Walter Knight; Irja Knight 1964-3-16 985 San Mateo Point San Bruno Comment
  UC844901  Iris longipetala Lewis S. Rose 1938-4-1 38111 San Mateo above Visitacion Valley; San Bruno Hills 60 Comment
Read comments
Oct 22 2013
  UC494237  Iris macrosiphon Anna E. Ehlers 281 San Mateo San Andreas Comment
  POM290948  Iris missouriensis Lyman Benson 1929-3-21 1021 San Mateo Wet places north of South San Francisco Comment
  CAS-BOT-BC57730  Isoetes howellii W. R. Dudley 1909-10-31 s.n. San Mateo Woodside Valley Pond Comment
  JEPS63782  Isolepis cernua William S. Cooper 1919-7-22 204 San Mateo Ano Nuevo Pt Comment
  UCD49893  Isolepis cernua S. Galen Smith; Malcolm A. Nobs 1949-8-25 1565 San Mateo Marshes at Sharp Park, San Mateo County. Comment
  JROH2777  Juglans hindsii John Hunter Thomas 1987-4-16 24203 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC109970  Juncus Kellogg; Brannan 1870-6-1 s.n. San Mateo San Gregorio Creek. Comment
  UCR254888  Juncus balticus Peter Rubtzoff, Elizabeth McClintock 1990-8-31 10045 San Mateo San Bruno Mountains, 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction, along old Guadalupe Road, east of Saddle Trail junction 213 Comment
  JROH4448  Juncus bolanderi Ann Lambrecht 2004-7-21 12 San Mateo Jasper Ridge Biological Preserve, Stanford University. Edge of Corte Madera Creek. Comment
  UCD164386  Juncus bufonius Peter Rubtzoff 1977-6-7 9029 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  JROH5659  Juncus bufonius var. bufonius John Rawlings 2014-5-23 1270 San Mateo Jasper Ridge Biological Preserve, Stanford University; up-slope from boat dock (aka Searsville Lab Landing). 104 Comment
  JROH5946  Juncus bufonius var. bufonius John Rawlings 2017-4-9 2016 San Mateo Jasper Ridge Biological Preserve, Stanford University; along entrance road near Sand Hill Gate 117 Comment
  JROH5629  Juncus bufonius var. bufonius Carol Zabel 2003-5-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Slope (uphill) from Road C turning right out of Sun Field Station, close to the driveway. Comment
  JROH5596  Juncus effusus subsp. pacificus John Rawlings 2014-2-4 1206 San Mateo Jasper Ridge Biological Preserve, Stanford University; ecotone between dominant Salix exigua on sandy lake shore and Typha angustifolia in drying Searsville lake bed, 50 m south of the boat landing and lab. 104 Comment
  CAS-BOT-BC227613  Juncus effusus subsp. pacificus Peter Rubtzoff; Elizabeth McClintock; Paul Reeberg 1989-6-3 s.n. San Mateo San Bruno Mountains. PG&E Marsh 15 Comment
  JEPS121406  Juncus hesperius Toni Corelli 2008-10-1 346 San Mateo Jasper Ridge Biological Reserve, Searsville Lake Comment
  JEPS63809  Juncus lescurii unknown 1925-5-28 3 San Mateo Salada Comment
  UC1133660  Juncus lescurii G. E. Sindel 1935-7-25 308 San Mateo 1 mi w Pescadero; Santa Cruz Quad. 1 Comment
  JROH4487  Juncus occidentalis John Hunter Thomas 1981-5-5 20541 A 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
  RSA6313  Juncus occidentalis D. D. Keck 1932-5-6 1468 San Mateo Belmont. Comment
  UC473496  Juncus occidentalis Kellogg and Brannan 1870-6-1 San Mateo San Gregorio Creek Comment
  CAS-BOT-BC173845  Juncus occidentalis Peter Rubtzoff 1978-7-8 9222 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. East Fork Colma Creek Canyon area. Comment
  RSA368314  Juncus patens J. Doty 1969-3-26 599 San Mateo San Mateo County: 100 yards E of jct Hwy 35 & 92, near summit of Caost Range, San Francisco Peninsula. Comment
  UC1601800  Juncus phaeocephalus J. Burtt Davy 1893-6-22 756 San Mateo head of Lake Pilarcitos Lake Pilarcitos Comment
  RSA796175  Juncus phaeocephalus Peter Rubtzoff 1978-8-17 9260 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  RSA783798  Juncus phaeocephalus var. paniculatus Peter Rubtzoff 1980-8-4 9563 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction. Comment
  JROH4520  Juncus xiphioides John Hunter Thomas 1983-5-31 22317 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near boat dock Comment
  JROH5653  Juncus xiphioides John Rawlings 2014-6-10 1259 San Mateo Jasper Ridge Biological Preserve, Stanford University. Corte Madera Creek delta near open water. 104 Comment
  JROH4038  Kickxia elatine Herbert Dengler 1961-9-24 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; S.F. Creek bed -- about midway between tiger lily site and old Zoology Cabin site -- directly below nesting sites of Kingfisher and Rough-winged Swallow Comment
  JROH4051  Kickxia spuria John Hunter Thomas 1990-7-28 24937 San Mateo Jasper Ridge Biological Preserve, Stanford University; near main JRBP gate Comment
  POM190453  Koeleria macrantha D. D. Keck 1932-5-6 1476 San Mateo Above Millbrae Highlands Comment
  RSA6412  Koeleria macrantha D. D. Keck 1932-5-6 1476 San Mateo Above Millbrae Highlands Comment
  CAS-BOT-BC273730  Koeleria pyramidata Elizabeth McClintock 1963-6-9 s.n. San Mateo San Bruno Mountain. Slope below parking lot Comment
  CAS-BOT-BC272321  Lachnagrostis filiformis Peter H. Raven 1950-6-3 2272 San Mateo San Andreas Lake 121 Comment
  JROH947  Lactuca saligna John Hunter Thomas 1982-9-23 21161 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU1797  Lactuca saligna C. W. Sharsmith 1956-10-22 6356 San Mateo San Mateo County Memorial Park, Pescadero Cr, Santa Cruz Mts Comment
  JROH950  Lactuca serriola John H. Thomas 1971-8-5 16012 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR256303  Lactuca serriola Peter Rubtzoff 1975-9-11 8379 San Mateo San Bruno Mountains, 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction 213 Comment
  JROH954  Lactuca virosa Toni Corelli 2006-8-8 315 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along causeway on trail 13, west of Leonard's bridge. 106 Comment
  CAS-BOT-BC340705  Lactuca virosa Walter Knight; Irja Knight 1963-9-18 s.n. San Mateo San Bruno Mountain Comment
  CAS-BOT-BC341631  Lagophylla ramosissima Margaret A. Barry 1937-6-22 168 San Mateo Coal Mine Ridge Comment
  CAS-BOT-BC341632  Lagophylla ramosissima LeRoy Abrams 1902-9-28 3003 San Mateo Portola Comment
  JEPS20287  Lagophylla ramosissima Lewis S. Rose 1955-9-19 55176 San Mateo 7 mi w of Saratoga; Skyline Boulevard 685 Comment
  CAS-BOT-BC341637  Lagophylla ramosissima J. I. McMurphy 1906-5-8 s.n. San Mateo Santa Cruz Mountain Peninsula. Near head of Crystal Springs Lakes Comment
  POM194884  Lagophylla ramosissima D. D. Keck, William M. Heusi 1929-10-24 500 San Mateo Summit of Coast Range, Alpine Creek Road. 686 Comment
  RSA107476  Lagophylla ramosissima L. S. Rose 1955-9-19 55176 San Mateo Skyline Boulevard, 7 miles west of Saratoga. 686 Comment
  RSA128849  Lagophylla ramosissima L. R. Abrams 1914-6-2 5111 San Mateo Searsville Lake. Comment
  SD146012  Lapsana communis G. K. Helmkamp, E. A. Helmkamp 1999-6-28 4977 A San Mateo Pescadero Creek Watershed; Pescadero Road just north of Loma Mar. 106 Comment
  CAS-BOT-BC339052  Lasthenia californica A. D. E. Elmer 1903-4-1 4738 San Mateo San Bruno Hills Comment
  CAS-BOT-BC339071  Lasthenia californica John Thomas Howell 1933-5-3 11204 San Mateo San Bruno Hills Comment
  CAS-BOT-BC339072  Lasthenia californica C. F. Baker 1903-4-6 1890 San Mateo San Bruno Hills Comment
  CAS-BOT-BC339086  Lasthenia californica A. D. E. Elmer 1903-4-1 4507 San Mateo San Bruno Hills Comment
  CAS-BOT-BC339051  Lasthenia californica Alex Briggs 1922-5-27 s.n. San Mateo Mirimar [Miramar] Comment
  CAS-BOT-BC339057  Lasthenia californica Lewis S. Rose 1956-5-28 56081 San Mateo Skyline Blvd w. of San Mateo 182 Comment
  CAS-BOT-BC339064  Lasthenia californica Elizabeth McClintock 1972-4-23 s.n. San Mateo San Bruno Mountain. Slope above Fern Rock Comment
  CAS-BOT-BC339077  Lasthenia californica George Oberlander 1949-4-17 78 San Mateo San Francisco Watershed Reserve. Sawyer Ridge Comment
  RSA116658  Lasthenia californica Roxana S. Ferris 1921-4-7 2128 San Mateo San Bruno Mt.; Plants of the Santa Cruz Mountain Peninsula. 213 Comment
  SEINET11811271  Lasthenia chrysostoma L. K. Henry 1956-1 s.n. San Mateo along Pacific Ocean at Pigeon Point Lighthouse on Rt. 1 Comment
  CAS-BOT-BC355496  Lasthenia glaberrima R. Bacigalupi 1923-4-16 s.n. San Mateo Field near San Francisquito Creek near Stanford University Comment
  POM55211  Lasthenia glabrata subsp. glabrata A. D. E. Elmer 1903-05 4426 San Mateo Millbrae. Comment
  RSA262209  Lasthenia glabrata subsp. glabrata John H. Thomas 1971-5-2 15794 San Mateo Near intersection of Canada and Edgewater roads; about 3 miles westward from Redwood City. 152 Comment
  CAS-BOT-BC355544  Lasthenia glabrata var. glabrata Edward Lee Greene 1883-5-1 s.n. San Mateo Belmont Comment
  POM361530  Lasthenia gracilis D. D. Keck 1932-3-24 1402 San Mateo Redwood City, at border of San Francisco Bay. Comment
  CAS-BOT-BC368192  Lasthenia minor K. L. Chambers 1956-6-20 1047 San Mateo Pebble Beach near Pescadero Point, between Hwy 1 and the ocean, on bluff near parking area. Comment
  CAS-BOT-BC368191  Lasthenia minor K. L. Chambers 1956-6-20 1044 San Mateo Mouth of Pescadero Creek on bluff between Hwy. 1 and the ocean; around parking area Comment
  SJSU11831  Lasthenia minor T. J. Sammis 1974-5-2 San Mateo Pescadero Rd 2.2 mi W of Pescadero Comment
  UCSC003524  Lasthenia minor Randall Morgan 2001-5-9 3728 San Mateo Bean Hollow State Beach parking area, San Mateo County Comment
  POM223333  Lathyrus vestitus subsp. vestitus L. S. Rose 1935-5-29 35191 San Mateo Kings Mountain Comment
  RSA153481  Lathyrus vestitus subsp. vestitus John H. Thomas 1961-5-14 9362 San Mateo Vicinity of Pilarcitos Stone Dam on Pilarcitos Creek. San Francisco Watershed Reserve. 152 Comment
  UC85257  Lathyrus vestitus var. vestitus C. F. Baker 1902-5-10 801 San Mateo Kings Mt. Comment
  UC864588  Lathyrus vestitus var. vestitus Lewis S. Rose 1932-5-3 32208 San Mateo San Bruno 182 Comment
  RSA20413  Lavatera arborea I. L. Wiggins 1935-6-29 8050 San Mateo Bluffs near the beach near old Pebble Beach Hotel, between Pescardero and Pingeo Point Comment
  CAS-BOT-BC323158  Layia chrysanthemoides David D. Keck 1932-4-29 1450 San Mateo Redwood City. Comment
  CAS-BOT-BC323159  Layia chrysanthemoides David D. Keck 1932-4-29 1450 San Mateo Redwood City. Comment
  CAS-BOT-BC323178  Layia chrysanthemoides Elizabeth McClintock; Paul Reeberg 1987-5-31 s.n. San Mateo San Bruno Mountains. Comment
  CAS-BOT-BC323179  Layia chrysanthemoides William R. Dudley 1893-5-17 s.n. San Mateo Near Millbrae. Comment
  CAS-BOT-BC321067  Layia gaillardioides A. D. E. Elmer 1903-6-1 4261 San Mateo Alpine School House Comment
  CAS-BOT-BC321074  Layia gaillardioides James McMurphy 1907-4-27 s.n. San Mateo Kings Mt. Comment
  CAS-BOT-BC321115  Layia gaillardioides David D. Keck 1932-6-1 1798 San Mateo 1.5 mi. NE of La Honda Santa Cruz Mountains 213 Comment
  CAS-BOT-BC321100  Layia gaillardioides David D. Keck 1932-6-1 1798 San Mateo 1.5 mi. NE of La Honda (5 mi SW of Skyline Blvd) Comment
  CAS-BOT-BC327506  Layia hieracioides L. R. Abrams 1907-8-26 s.n. San Mateo King's Mt. Comment
  JROH988  Layia hieracioides John Hunter Thomas 1980-5-8 19945 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA15482  Layia hieracioides L. S. Rose 1936-5-28 36309 San Mateo Emerald lake, W. of Redwood City 91 Comment
  CAS-BOT-BC327470  Layia hieracioides John H. Thomas 1967-5-7 12825 San Mateo Sunset Beach State Park, about 4.5 miles SW of Watsonville. Comment
  CAS-BOT-BC352222  Layia hieracioides Peter Rubtzoff 1978-7-8 9221 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road Junction, San Bruno Mountains. Comment
  RSA92182  Layia hieracioides D. D. Keck 1932-5-11 1760 San Mateo Above Searsville Lake, on La Honda Road, E slope of Santa Cruz Mountains. Comment
  JROH999  Layia platyglossa John Hunter Thomas 1980-5-8 19944 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET10879172  Layia platyglossa John T. Middleton 1937-4-10 Middleton s.n. San Mateo San Mateo Co., Ca. Comment
  JEPS33102  Lemna gibba A. D. E. Elmer July, 1903 4765 San Mateo San Pedro Comment
  RSA18086  Lemna gibba Carl B. Wolf 1929-4-29 3662 San Mateo Small reservoir, 1 mile S of Portola, San Mateo Comment
  JROH4535  Lemna minor John Hunter Thomas 1978-7-2 19252 San Mateo Jasper Ridge Biological Preserve, Stanford University; on dam Comment
  CAS-BOT-BC537272  Lemna minor D E Breedlove 1974-5-13 36220 San Mateo Brushy slopes San Pedro Valley Park, Pacifica 152 Comment
  CAS-BOT-BC527270  Lemna minuta Walter Knight; Irja Knight 1963-10-23 376 San Mateo Cow Trough Ravine, San Bruno Mt. Comment
  CAS-BOT-BC221533  Lepechinia calycina Lewis S. Rose 1937-5-23 37320 San Mateo Belmont 91 Comment
  CHSC496  Lepidium didymum F. Berryman 1929-5-10 San Mateo Moss Beach. 9 Comment
  RSA52666  Lepidium didymum I. L. Wiggins 1949-7-2 12198 San Mateo Pescadero Beach. Comment
  UCD115701  Lepidium latifolium John Thomas Howell 1978-7-18 53189 San Mateo Airport Sheraton, Airport Blvd., Burlingame. Comment
  JROH1543  Lepidium nitidum John H. Thomas 1968-3-17 14190 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1549  Lepidium nitidum John Hunter Thomas 1980-4-10 19870 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Lab Comment
  JROH1554  Lepidium nitidum John Hunter Thomas 1991-4-11 24984 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1301017  Lepidium nitidum Helen K. Sharsmith 1963-2-16 5143 San Mateo above Daly City; San Francisco Bay Region, San Bruno Mountain 106 Comment
  JROH1565  Lepidium strictum John Hunter Thomas 1990-5-2 24834 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5275  Leptochloa fusca subsp. uninervia John Hunter Thomas 1980-11-27 20179 San Mateo Jasper Ridge Biological Preserve, Stanford University. Delta in Searsville Lake (formed by Corte Madera Creek). Comment
  POM65197  Leptosiphon ambiguus C. F. Baker 1902-5-4 s.n. San Mateo Woodside. Comment
  JROH3173  Leptosiphon androsaceus John Hunter Thomas 1985-5-22 23671 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM279155  Leptosiphon androsaceus Lyman Benson 1935-5-5 6531 San Mateo Lake Searsville. 152 Comment
  RSA18460  Leptosiphon androsaceus C. B. Wolf 1927-6-29 547 -A San Mateo Along coast south of Pebble Beach near Pescadero. Comment
  JROH3179  Leptosiphon bicolor H. A. Borthwick 1920-4-12 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC106675  Leptosiphon croceus Katharine Brandegee 1905-6-19 San Mateo Moss Beach (Wienke's) Moss Beach Comment
Read comments
Jun 26 2010
  CAS-BOT-BC226727  Leptosiphon latisectus Alice Eastwood 1901-5-19 s.n. San Mateo Blenheim 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
  UC133649  Leptosiphon rosaceus Dr. E. B. Copeland 1903-5-24 3260 San Mateo Montara Point Comment
  CAS-BOT-BC324053  Lessingia arachnoidea W. R. Dudley 1902-9-21 s.n. San Mateo By road east of Crystal Springs Reservoir, near fork to Alnus House, Santa Cruz Mountains Comment
  CAS-BOT-BC325500  Lessingia arachnoidea W. Spence 1960-7-2 552 San Mateo 1 mile north of Dam, Route 5, Crystal Springs Lake Comment
  CAS-BOT-BC539289  Lessingia arachnoidea John Rawlings; Ken Hickman 2016-7-21 1906 San Mateo Caltrans right-of-way upslope from Hwy 92 W onramp to Hwy 280 N; downslope from San Francisco Watershed fenceline 122 Comment
  CDA8165  Lessingia arachnoidea M. Knudsen 1982-7-28 San Mateo Crystal Springs Reservoir, just below the dam. 0 Comment
  SJSU15428  Lessingia germanorum Toni Corelli 2011-9-14 720 a San Mateo Northeast of Hillside Park, above houses 107 Comment
  SJSU15429  Lessingia germanorum Toni Corelli 2011-9-14 720 b San Mateo Northeast of Hillside Park, above houses 107 Comment
  JROH1027  Lessingia glandulifera var. glandulifera Carol Zabel 1989-9-4 36 San Mateo Jasper Ridge Biological Preserve, Stanford University; near side of Road E, 100 yards down from intersection of Roads D, E, and F Comment
  JROH1037  Leucanthemum maximum Toni Corelli 2009-7-22 353 San Mateo Jasper Ridge Biological Preserve, Stanford University. San Francisquito Creek bed below Dennis Martin marker 71 Comment
  CAS-BOT-BC273562  Leymus californicus Dr. Kellogg No date on label s.n. San Mateo Unspecified Comment
  CAS-BOT-BC272186  Leymus triticoides Paul Reeberg 1988-10-31 s.n. San Mateo At mouth of ravine west of quarry, San Bruno Mountains Comment
  RSA100982  Leymus triticoides G. Oberlander 1950-5-28 990 San Mateo Under redwoods, Cahill Ridge, San Francisco Watershed Reserve Comment
  UC37061  Leymus triticoides unknown San Mateo San Mateo Comment
  POM132667  Ligusticum apiifolium A. D. E. Elmer 1903-07 4966 San Mateo San Mateo Comment
  JROH2982  Ligustrum lucidum John Hunter Thomas 1978-5-23 19223 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA18085  Lilaea scilloides Carl B. Wolf 1929-4-29 3663 San Mateo Small reservoir, 1 mile S of Portola, San Mateo Comment
  CAS-BOT-BC451671  Lilaea scilloides W. R. Dudley 1906-10-12 s.n. San Mateo Santa Cruz Mountain Peninsula. Pond 15 and 20. Comment
  CAS-BOT-BC451672  Lilaea scilloides W. R. Dudley 1909-10-31 s.n. San Mateo Santa Cruz Mountain Peninsula. Woodside valley pond Comment
  CAS-BOT-BC130793  Lilium pardalinum W. R. Dudley 1895-9-15 s.n. San Mateo Near Lumber Camp on El Corte de Madera Creek Comment
  SEINET3358242 Image available Limonium californicum Lewis S. Rose 1942-1 42225 San Mateo Brisbane 1 Comment
  JROH4058  Limosella acaulis John Hunter Thomas 1982-8-13 21136 San Mateo Jasper Ridge Biological Preserve, Stanford University. Lake edge and in water Comment
  UC106676  Linanthus androsaceus Katharine Brandegee 1905-6-20 San Mateo near Lake Pilarcitos Comment
  UC52732  Linanthus androsaceus Ivan Tidestrom May 1894 San Mateo San Mateo Comment
  JEPS48590  Linanthus androsaceus James G. Daly 1934-1 332 San Mateo Upper Alpine Canyon, sw San Mateo County Santa Cruz Mts., San Gregorio Watershed 30 Comment
Read comments
Mar 12 2009
  UC1745718  Linanthus dichotomus Annetta Carter, Helen Sharsmith 1937-5-23 1318 San Mateo E side of Middle Crystal Springs Lake, about 1/2 mi. N of dam. Comment
  SEINET12279071  Linanthus filipes L. S. Rose 1932-1 32140 San Mateo Redwood City Comment
  UC202827  Linanthus liniflorus A. D. E. Elmer Jun 1903 4704 San Mateo s end Crystal Springs Lake Comment
  SEINET7076098  Linanthus parviflorus A. G. Vestal 1955-5-31 s.n. San Mateo Near Pebble Beach off Route 1. (NAD 27; 37.2369? deg. North Latitude, 122.4153? deg. West Longitude, UTM Zone 10, 551863mE, 4121109mN). [GPS Coordinate: WGS84/NAD83]. Comment
  UCR66523  Linanthus parviflorus David D. Keck 1932-5-6 1481 San Mateo Just west of Millbrae Highlands 50 Comment
  CDA6305  Linaria purpurea T. C. Fuller 1968-10-3 17659 San Mateo Christie s Crescent Nursery, Half Moon Bay. 0 Comment
  JEPS85571  Lithocarpus densiflorus Craig Dremann 1986-8-30 320 San Mateo La Honda; along Calif Highway 84 (La Honda-Woodside Rd) at mile marker 8.37 at intersection of Pescadero Rd Comment
  UC1135272  Lithocarpus densiflorus C. M. Belshaw 1935-1-25 1472 San Mateo 2.5 mi nw Sierra Moreno Peak; Santa Cruz Quad. 609 Comment
  CAS-BOT-BC36075  Lithocarpus densiflorus var. densiflorus Eric Walther 1919-6-9 s.n. San Mateo Woodside Comment
  RSA15201  Lithocarpus densiflorus var. densiflorus Carl B. Wolf 1926-10-19 78 San Mateo La Honda Grade. Santa Cruz Mtns. Comment
  RSA152237  Lithocarpus densiflorus var. densiflorus I. L. Wiggins 1925-04 1661 San Mateo On Kings Mountain Road one mile above Woodside just above the first Pseudotsuga menziesii on the right edge of the road. Comment
  CAS-BOT-BC430972  Lithophragma bolanderi Le Roy Abrams 1901-4-1 1165 San Mateo near Woodside Comment
  UC858160  Lithophragma heterophyllum Lewis S. Rose 1939-4-12 39062 San Mateo Crystal Springs Lake 152 Comment
  JROH1566  Lobularia maritima John Hunter Thomas 1983-2-21 21284 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC60213  Lobularia maritima Phillip Wheeler; Elizabeth McClintock 1965-6-13 s.n. San Mateo San Bruno Mountain. Colma Canyon along road. Comment
  CAS-BOT-BC342465  Logfia gallica John H. Thomas 1955-4-6 4849 San Mateo East facing slope of San Bruno Mountain just north of South San Francisco 91 Comment
  CAS-BOT-BC342466  Logfia gallica John H. Thomas 1961-5-7 9265 San Mateo San Bruno Mountain in northern part of county 396 Comment
  JROH737  Logfia gallica John H. Thomas 1977-5-14 18607 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH748  Logfia gallica John Hunter Thomas 1992-4-23 25158 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Rattlesnake Rocks and along trail to redwoods Comment
  RSA786667  Lolium perenne subsp. multiflorum Peter Rubtzoff 1976-6-13 8629 San Mateo San Bruno Mountains: 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction. In area of uppermost part of East Fork Colma Creek, at the NW corner of Fog Forest. Comment
  JROH5548  Lomatium caruifolium var. caruifolium John Rawlings 2013-4-2 1142 San Mateo Jasper Ridge Biological Preserve, Stanford University. Southeast side of creek and about 75 meters upstream of bridge on Trail 11 136 Comment
  JROH260  Lomatium dasycarpum subsp. dasycarpum John H. Thomas 1967-6-1 12969 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH264  Lomatium dasycarpum subsp. dasycarpum John H. Thomas 1973-4-20 16582 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS17119  Lomatium macrocarpum W. L. Jepson 1914-3-22 5736 San Mateo Redwood City Comment
  JROH272  Lomatium macrocarpum John H. Thomas 1956-4-7 5625 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH273  Lomatium macrocarpum John H. Thomas 1956-4-7 5625 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH281  Lomatium macrocarpum John H. Thomas 1975-5-26 17915 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU1078  Lomatium macrocarpum C. W. Sharsmith 1951-4-6 5821 San Mateo Woodside Hills c. 3 mi W of Woodside 182 Comment
  UC1368794  Lomatium macrocarpum David H. French 1968-4-19 2857 San Mateo w. Redwood City (s.e. of Upper Crystal Springs Reservoir, s.e. side Edgewood Rd., ca. 100 yds. n.e. of intersection w/ Canada Rd.) 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
  POM202458  Lomatium macrocarpum L. S. Rose 1933-5-17 33168 San Mateo Redwood City Comment
  RSA119854  Lomatium macrocarpum W. R. Dudley 1894-4-21 s.n. San Mateo San Mateo Ravine below dam Comment
  UC1301122  Lomatium utriculatum Helen K. Sharsmith 1963-2-16 5133 San Mateo lower slopes San Bruno Mt. (above Daly City); San Francisco Bay Region, San Bruno Mt. 106 Comment
  CAS-BOT-BC240594  Lonicera hispidula W. R. Dudley 1896-9-15 s.n. San Mateo Santa Cruz Mountain Peninsula. El Corte Madera Creek, Santa Cruz Mts. Comment
  CAS-BOT-BC240601  Lonicera hispidula Daniel Cohen 1953-6-5 110 San Mateo Los Trancos Woods Comment
  CAS-BOT-BC240602  Lonicera hispidula W. R. Dudley 1894-3-24 s.n. San Mateo Santa Cruz Mountain Peninsula. Upper Pescadero Creek Comment
  CAS-BOT-BC240607  Lonicera hispidula Margaret A. Barry 1937-6-24 182 San Mateo Coal Mine Ridge Comment
  JROH1651  Lonicera hispidula John H. Thomas 1964-11-29 10546 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1658  Lonicera hispidula John Hunter Thomas 1980-5-6 19925 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  HSC23785  Lonicera hispidula var. vacillans Mary Katherine Wicksten 1971-6-18 37 San Mateo Huddart Park, near lower parking lot. Comment
  RSA1949  Lonicera hispidula var. vacillans C. B. Wolf 1930-11-5 1061 San Mateo 2 miles W of La Honda, Santa Cruz. 305 Comment
  JEPS90725  Lonicera involucrata Dean W. Taylor 1989-4-18 10220 San Mateo ridgetop between Ox Hill and Scarper Peak; Santa Cruz Mountains, Montara 7 1/2 quadrangle 472 Comment
  SBBG25074  Lotus corniculatus D. Myrick 1966-6-11 1448 San Mateo near Pescadero off Hwy 1 Comment
  JROH2046  Lotus corniculatus John Hunter Thomas 1982-5-18 20937 San Mateo Jasper Ridge Biological Preserve, Stanford University; old racing oval Comment
  POM264394  Lotus formosissimus E. K. Crum 1934-4-29 1701 San Mateo South of Pescadero. 30 Comment
  RSA120441  Lotus heermannii W. R. Dudley 1895-9-15 s.n. San Mateo El Corte de Madera, west side., Santa Cruz Range. Comment
  UC15718  Lotus heermannii var. orbicularis F. T. Bioletti 1892-6-22 San Mateo Italian Cemetery, S. Fr. Comment
Read comments
Dec 1 2007
  UC80707  Lotus humistratus C. F. Baker 1902-5-4 750 San Mateo Woodside Comment
  JEPS55903  Lotus scoparius Dr. L. M. Newlon 1921-7-30 249 San Mateo Salada Comment
  SEINET3558576 Image available Lotus scoparius Lewis S. Rose 1934-6-2 34282 San Mateo Belmont. Comment
  POM16747  Lotus scoparius var. scoparius A. D. E. Elmer 1903-06 4447 San Mateo San Mateo Comment
  HSC23955  Lotus unifoliolatus var. unifoliolatus Mary Katherine Wicksten 1971-6-22 92 San Mateo Huddart Park by horse ring Comment
  HSC24026  Ludwigia peploides subsp. peploides Mary Katherine Wicksten 1971-6-20 70 San Mateo San Francisquito Creek, by Oak Knoll School Comment
  UCR240782  Lupinus T. B. Salvato, Lia V. D. Mansfield, Joel-Henry J. Mansfield 2008-6-14 3514 San Mateo Central Coast, Pebble Beach State Beach, 12.5 mi north of Santa Cruz Co. line, along Hwy 1, Pacific Coast Hwy, 1.65 mi south of road to Pesacadero and 16 mi south of Half Moon Bay 11 Comment
  RSA253793  Lupinus C. P. Smith 1948-4-23 48142 San Mateo Highway 1, San Pedro Point, north grade. Comment
  POM10879  Lupinus affinis C. F. Baker 1902-4-6 473 San Mateo Crystal Springs Lake. Comment
  UC15757  Lupinus affinis Alice Eastwood April 1896 San Mateo near Crystal Springs; near Crystal Springs Comment
  POM77733  Lupinus affinis C. P. Smith 1921-4-9 3292 San Mateo San Mateo Canyon Comment
  JEPS64922  Lupinus albifrons W. L. Jepson 1921-4-3 9108 San Mateo Colma Canyon near Colma; Colma Canyon Comment
  SEINET5558503  Lupinus albifrons H. S. Gentry 1931-1 31 San Mateo Collected about 2 miles W of San Bruno. Comment
  SEINET10488379  Lupinus albifrons Charles Piper Smith 1948-4-23 Smith 48150 San Mateo Canada road 4 miles n of woodside Comment
  CAS-BOT-BC195803  Lupinus albifrons var. albifrons Delzie Demaree 1933-8-13 10508 San Mateo Red-Wood [Redwood] City Comment
  CAS-BOT-BC195814  Lupinus albifrons var. albifrons Charles Piper Smith 1908-5-31 1441 San Mateo San Mateo, San Mateo Canon [Canyon] Comment
  CAS-BOT-BC195786  Lupinus albifrons var. albifrons Charles Piper Smith 1946-3-26 46115 San Mateo Highway 5, San Francisco County Jail Road north Comment
  CAS-BOT-BC196106  Lupinus albifrons var. collinus Javier Penalosa 1963-3-9 2685 San Mateo 1/2 mi. east of 1314 ft. summit 304 Comment
  CAS-BOT-BC196110  Lupinus albifrons var. collinus Walter Knight; Irja Knight 1964-3-15 580 San Mateo Colma Canyon Comment
  RSA800198  Lupinus albifrons var. collinus Robert F. Thorne, Percy C. Everett 1963-6-9 32209 San Mateo On top of San Bruno Mountain, near TV tower. 335 Comment
  SEINET10484531  Lupinus albifrons var. collinus Walter Knight, Irja Knight 1963-8-5 Knight s.n. San Mateo Motorcycle ridge, san bruno mountain Comment
  CAS-BOT-BC196435  Lupinus arboreus Elizabeth McClintock; Walter Knight; Irja Knight; Baki Kasapligil 1967-7-18 s.n. San Mateo In Colma Canyon Comment
  CAS-BOT-BC196436  Lupinus arboreus J. Ed. McClellan; Bonnie McClellan 1976-6-7 s.n. San Mateo Jeep Fire Trail, Butano State Park Comment
  SEINET10488472  Lupinus arboreus Marcus E. Jones 1881-6-24 Jones s.n. San Mateo Comment
  SEINET12154361  Lupinus arboreus E. A. Purer 1933-1 5371 San Mateo 2miS of Pigeon Point Comment
  JEPS101819  Lupinus arboreus var. eximius Dean W. Taylor 2000-4-25 17437 San Mateo along dirt road 1 mi W of North Peak, Montara Mountain 411 Comment
  UC81971  Lupinus bicolor C. F. Baker 1903-4-8 1921 San Mateo San Andreas Lake Comment
  UC1048668  Lupinus bicolor Lewis S. Rose 1942-3-30 42006 San Mateo Mills Field 1 Comment
  UCD107181  Lupinus bicolor A. A. Heller 1907-4-20 8451 San Mateo near Lake Merced. Comment
  RSA178649  Lupinus bicolor subsp. pipersmithii James I. McMurphy 1911-4-22 s.n. San Mateo Stanford Park, near Stanford University. Comment
  POM10642  Lupinus bicolor subsp. tridentatus C. F. Baker 1903-4-8 1921 San Mateo San Andreas Lake Comment
  POM10639  Lupinus bicolor subsp. umbellatus C. F. Baker 1902-5-10 816 San Mateo Summit of Coast Range. Comment
  SEINET11071805 Image available Lupinus bicolor subsp. umbellatus A. A. Heller 1907-1 8451 San Mateo Near Lake Merced Comment
  SEINET10490752  Lupinus formosus var. formosus Walter Knight, Irja Knight 1964-9-2 Knight 723 San Mateo Foot of buckeye canyon in grassland. Comment
  SEINET3131584  Lupinus latifolius L. S. Rose 1939-5-5 39096 San Mateo San Mateo Canyon 46 Comment
  SEINET11071961 Image available Lupinus latifolius A. A. Heller 1907-5-23 San Mateo Back of San Mateo on the Half Moon Bay road Comment
  POM87760  Lupinus latifolius subsp. latifolius L. R. Abrams 1902-5-11 2449 San Mateo San Mateo Canyon. Comment
  JROH2122  Lupinus latifolius var. latifolius John H. Thomas 1977-4-29 18575 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2124  Lupinus latifolius var. latifolius John Hunter Thomas 1980-5-6 19921 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD108701  Lupinus microcarpus var. densiflorus A. A. Heller 1907-5-23 8561 San Mateo Back of San Mateo on the Half Moon Bay road. Comment
  JEPS127786  Lupinus nanus Adam C. Schneider with C. Matt Guilliams 2013-4-7 57 San Mateo At high point of dirt road running parallel to transmission lines. Comment
  JROH2134  Lupinus nanus John Hunter Thomas 1980-4-10 19876 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  JROH5732  Lupinus nanus John H. Thomas 1976-4-30 18100 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  RSA178637  Lupinus nanus subsp. nanus James I. McMurphy 1911-4-24 s.n. San Mateo Corner between San Francisquito and Los Trancos creeks near Stanford University. Comment
  SEINET10871083  Lupinus polycarpus David B. Dunn, Howard Brown 1946-5-15 Dunn 2545 San Mateo Collected in open lush meadow in the hilltops of the san francisco peninsula, On hwy. From woodside to la honda, 3.7 mi ne of la honda on the se side of the Hwy. Comment
  JEPS81168  Lupinus polyphyllus Edward Lee with H. L. Mason 1935-6-16 1529 San Mateo between Ano Nuevo and Franklin Point; between Ano Nuevo and Franklin Point Comment
  POM11080  Lupinus succulentus A. D. E. Elmer 1903-04 5021 San Mateo Portola. Comment
  UC187796 Image available Lupinus succulentus var. layneae Katharine Brandegee 1918-6-23 San Mateo Farallon City Comment
  HSC76497  Lupinus vallicola subsp. apricus Charles Piper Smith 1946-3-26 46118 San Mateo Wood side, 2.3 mi. N Comment
  JEPS125910  Lupinus variicolor Dean W. Taylor 2002-3-20 17955 San Mateo Franklin Point, coastal bluff, about 1 mile SE along the coast from actual point. Comment
  SJSU2300  Lupinus variicolor C. W. Sharsmith 1950-4-16 6629 San Mateo near Pescadero Point near Pescadero Comment
  UC201947  Lupinus variicolor A. D. E. Elmer May, 1903 4709 San Mateo San Pedro Comment
  UC311903  Lupinus variicolor A. D. E. Elmer April, 1903 4915 San Mateo Lake San Andreas Comment
  UC865524  Lupinus variicolor Alice Eastwood and John Thomas Howell 1938-6-26 6052 San Mateo Montara Mt. , Montara Mt. (above Point San Pedro) Comment
  UC903067  Lupinus variicolor Ethel Crum 1934-4-29 1699 San Mateo 4 mi s Pescadero (open slope near ocean); s of Pescadero Comment
  SEINET12154794  Lupinus variicolor M. T. Doutt 1931-1 422 San Mateo Skyline Blvd, W of Hillbrae Comment
  JROH4525  Luzula comosa var. comosa John H. Thomas 1967-4-20 12712 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC441262  Luzula macrantha W. R. Dudley 1908-3-8 s.n. San Mateo Santa Cruz Mountain Peninsula: Coal Mine Ridge near Mud Lakes 335 Comment
  CAS-BOT-BC441267  Luzula macrantha E. A. McGregor 1908-3-9 s.n. San Mateo Coal Mine Ridge Comment
  UC1099770  Luzula subsessilis Herbert L. Mason 1927-4-23 3686 San Mateo along road from La Honda to Pescadero Creek Comment
  JROH3365  Lysimachia arvensis John H. Thomas 1975-4-18 17787 b San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3366  Lysimachia arvensis John H. Thomas 1975-4-19 17791 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA0015076  Lythrum californicum L. R. Abrams 1901-09 2219 San Mateo Menlo Park, borders of Bay. Comment
  JROH2945  Lythrum hyssopifolia John H. Thomas 1974-10-26 17630 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA0011333  Lythrum hyssopifolia John H. Thomas 1959-7-8 8020 San Mateo Pescadero Beach. Comment
  UC796711  Lythrum hyssopifolia Ira L. Wiggins 1949-7-2 12195 San Mateo on Pescadero Beach Pescadero Beach Comment
  RSA176551  Madia capitata John H. Thomas 1963-7-19 10179 San Mateo Ano Nuevo Point Comment
  CAS-BOT-BC539288  Madia elegans John Rawlings; Ken Hickman 2016-7-21 1904 San Mateo Caltrans right-of-way upslope from Hwy 92 W onramp to Hwy 280 N; near a concrete drainage ditch a few yards downslope from San Francisco Watershed fenceline 122 Comment
  SD38972  Madia elegans Edith A. Purer 1933-8-13 5421 San Mateo Santa Clara Valley near Belmont. Comment
  UC463563  Madia elegans L. R. Abrams and I. L. Wiggins 1930-11-13 173 A San Mateo above Crystal Springs Lake Comment
  POM54251  Madia elegans subsp. vernalis A. D. E. Elmer 1903-05 4662 San Mateo Alpine School House. Comment
  JROH1057  Madia exigua John Hunter Thomas 1982-7-3 21066 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC343323  Madia gracilis John H. Thomas 1967-5-2 12808 San Mateo San Bruno Mountain. About 1/4 mile up Market St. from new school in canyon Comment
  JROH1068  Madia gracilis John H. Thomas 1961-5-5 9222 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1074  Madia gracilis J. H. Thomas 1977-4-29 18571 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
  UC917256  Madia gracilis W. A. Harvey and J. M. Tucker 1948-6-29 1703 San Mateo beside road to, just w of junction with Highway 5 Portola State Park; Skyline Boulevard Comment
  CAS-BOT-BC343334  Madia gracilis David D. Keck 1932-5-6 1485 San Mateo Hills just west of Millbrae Highlands 120 Comment
  CAS-BOT-BC343340  Madia gracilis James I. McMurphy 1909-5-25 s.n. San Mateo San Mateo Canyon Comment
  POM263770  Madia madioides L. S. Rose 1941-7-2 41287 San Mateo Kings Mountain 540 Comment
  CAS-BOT-BC345142  Madia sativa J. H. Thomas 1959-8-16 8064 San Mateo About 2 miles SW of Pescadero 60 Comment
  CAS-BOT-BC353466  Madia sativa Peter Rubtzoff 1975-9-11 8378 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road Junction, San Bruno Mountains. Comment
  JROH1099  Madia sativa John H. Thomas 1967-11-5 14132 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1101  Madia sativa John H. Thomas 1971-8-7 16020 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1116  Madia sativa John Hunter Thomas 1988-10-17 24594 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM284995  Madia sativa Lyman Benson 1935-5-5 6543 San Mateo Lake Searsville. Stanford University. Santa Cruz Mtn range. S.F. Bay watershed. 152 Comment
  CAS-BOT-BC345141  Madia sativa W. R. Dudley 1909-10-4 s.n. San Mateo Santa Cruz Mountain Peninsula. On hills from Ponds to Mussel Rock Comment
  OBI15706  Madia sativa Lewis S. Rose 1966-8-6 66078 San Mateo San Bruno Mtn, head of Colma Cyn 213 Comment
  JROH5749  Maianthemum racemosum L. Nordby 1982-4-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Near San Francisquito Creek, north of Rattlesnake rock Comment
  CAS-BOT-BC512106  Maianthemum racemosum subsp. amplexicaule George Oberlander 1950-3-18 583 San Mateo Pilarcitos Canyon; San Francisco Watershed Reserve Comment
  CAS-BOT-BC512110  Maianthemum racemosum subsp. amplexicaule Mrs. S. G. Suttiffe 1921-4-3 s.n. San Mateo Lake Pilarcitos Comment
  RSA309417  Maianthemum racemosum subsp. amplexicaule Robert A. Norris, John L. Inase 1983-3-19 4492 San Mateo Weiler Ranch Road Trail, San Pedro Valley County Park, near Linda Mar 79 Comment
  CDA33989  Maianthemum stellatum D. G. Kelch, David Gernandt, Steffi Ickert-Bond, Yingli Guo 2011-4-22 11 .15 San Mateo Santa Cruz Mountains.; Skyline Blvd, ~ 5 miles W of Los Altos. Comment
  JROH4712  Maianthemum stellatum John Hunter Thomas 1978-7-8 19256 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC514164  Maianthemum stellatum Elmer I. Applegate 1895-4-6 709 b San Mateo Hillside above Stanford University Comment
  CAS-BOT-BC514171  Maianthemum stellatum Elizabeth McClintock 1965-3-28 s. n. San Mateo In Trillium Gulch, San Bruno Mountain Comment
  RSA407375  Maianthemum stellatum Lyman Benson 1928-4-12 69 San Mateo Stanford University, Santa Cruz mountains, San Francisquito creek watershed; stream bank at Pest House 30 Comment
  UC138326  Malacothamnus davidsonii J. W. Congdon 1897-7-27 San Mateo Belmont Comment
  JROH2963  Malacothamnus fasciculatus John Hunter Thomas 1977-6-7 18732 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC204084  Malacothamnus hallii John Thomas Howell 1935-4-11 12579 San Mateo West end of Hayward - San Mateo Bridge Comment
  SEINET7248024  Malva assurgentiflora Robert C. Bechtel 1952-1 84 San Mateo Colma Comment
  RSA440955  Marah fabacea Glenn A. Gorelick 1967-4-14 s.n. San Mateo San Bruno Mts. overlooking Daly City near San Francisco. Comment
  HSC7023  Marah fabacea P. A. Murphy 1965-4-16 10 San Mateo About 5 mi. from Half Moon Bay on the Higgin's Canyon Rd. Comment
  RSA15241  Marah fabacea C. B. Wolf 1927-2-17 202 San Mateo Los Trancos Creek, 2 miles back of Stanford University. Comment
  RSA8532  Marah fabacea J. T. Howell 1933-4-9 10970 San Mateo Between Pescadero and Pigeon Pt. Comment
  CDA5694  Marrubium vulgare C. M. Sill 1961-7-1 San Mateo Laurel School, Menlo Park. 0 Comment
  JROH615  Matricaria discoidea John H. Thomas 1965-5-12 10647 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC348193  Matricaria discoidea Philip C. Wheeler 1965-5-8 s.n. San Mateo San Bruno Mountain. Sierra Point Comment
  CAS-BOT-BC422686  Meconella californica H. L. Mason 1928-2-22 4162 San Mateo San Bruno Mountains Comment
  CAS-BOT-BC422677  Meconella californica W. R. Dudley 1894-3-26 s.n. San Mateo Santa Cruz Peninsula. By road San Mateo to Crystal Springs Res. Comment
  CAS-BOT-BC422685  Meconella californica Arthur Menzies 1972-4-9 s.n. San Mateo San Bruno Mountain. Buckeye Canyon south of Crocker Industrial Park. Comment
  JROH2152  Medicago arabica John H. Thomas 1971-4-24 15772 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2154  Medicago arabica John Hunter Thomas 1990-5-8 24853 San Mateo Jasper Ridge Biological Preserve, Stanford University; low-flow crossing Comment
  UCR10253  Medicago lupulina George K. Helmkamp, E. A. Helmkamp 1999-6-28 4976 San Mateo Pescadero Creek Watershed, Pescadero Road just north of Loma Mar 107 Comment
  JROH2166  Medicago polymorpha John H. Thomas 1973-3-12 16481 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2160  Medicago polymorpha John H. Thomas 1957-4-16 6659 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM319880  Melica californica Barbara Shervanick 1973-4-1 795 San Mateo San Bruno Mt. first summit on Crocker Road; Mt. Range: San Bruno Mountains; Drainage Area: San Francisco Bay. Comment
  SBBG44985  Melica californica L. R. Abrams 1902-5-4 2407 San Mateo Woodside Comment
  CAS-BOT-BC264254  Melica torreyana Margaret Barry 1937-7-17 209 San Mateo Coal Mine Ridge Comment
  RSA159421  Melica torreyana John H. Thomas 1961-5-14 9374 A San Mateo Vicinity of Pilarcitos Stone Dam on Pilarcitos Creek. San Francisco Watershed Reserve. 152 Comment
  UCD88810  Melica torreyana Rimo Bacigalupi; Jim Roof and L. Heckard 1961-4-24 7625 San Mateo East of KRON television tower and station; on Guadalupe Valley side of the summit of San Bruno Mountain. 304 Comment
  CAS-BOT-BC257357  Melilotus indicus Peter Rubtzoff 1988-6-9 9923 San Mateo San Bruno Mountains, Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction, along Old Guadalupe Road in the northwestern part of the Saddle area, east of Saddle Trail junction. Comment
  CAS-BOT-BC290608  Mentha Peter Rubtzoff; Walter Knight; Irja Knight 1987-10-16 9866 San Mateo San Bruno Mountain. Saddle area on north side of Guadelupe Canyon Parkway west of Radio Road junction; NW part of the area along old Guadalupe Road. Comment
  JROH2812  Mentha pulegium John Hunter Thomas 1979-9-9 19725 San Mateo Jasper Ridge Biological Preserve, Stanford University; edge of Searsville Lake Comment
  JROH2807  Mentha pulegium John H. Thomas 1964-11-29 10533 San Mateo Jasper Ridge Biological Preserve, Stanford University; W end of Searsville Dam Comment
  OBI4715  Mercurialis annua T. C. Fuller 1960-6-23 4542 San Mateo E fence line, Sanchez Abode House, S side of Linda Mar Blvd, Pedro Valley Comment
  CDA31212  Mercurialis annua J. Eide 2010-2-19 PDR# 1527850 San Mateo East Palo Alto: in residential garden. 0 Comment
  POM177324  Mercurialis annua L. R. Abrams, I. L. Wiggins, D. Abrams 1930-11-13 I 80 San Mateo Artichoke field 3 mi. S. of Rockaway Beach (Pedro Valley). Comment
  POM177458  Mercurialis annua L. R. Abrams, I. L. Wiggins 1930-11-13 179 San Mateo 3 miles S of Rockaway Beach (Pedro Valley) Comment
  RSA190717  Mercurialis annua T. C. Fuller 1967-8-23 16293 San Mateo Coastways Ranch, 0.2 mi. e. of the Coast Hwy (Hwy 1), 0.2 mi. n. of the county line of Santa Cruz Co. in San Mateo Co. Comment
  CAS-BOT-BC438138  Mesembryanthemum nodiflorum T. Winfield 1973-10-10 1222 San Mateo San Francisco Bay: Redwood City Comment
  CAS-BOT-BC438139  Mesembryanthemum nodiflorum W. R. O. 1973-10-10 1230 San Mateo Most stations; mobile estate project. Redwood City Comment
  CAS-BOT-BC428898  Micranthes californica James McMurphy 1902-3-22 s.n. San Mateo Above Portola Comment
  CAS-BOT-BC428899  Micranthes californica Ira L. Wiggins 1929-3-23 3369 San Mateo Road to Mud Lake, near Stanford University. Comment
  CAS-BOT-BC348576  Micropus californicus var. californicus Philip C. Wheeler 1965-5-11 s.n. San Mateo San Bruno Mountain. Southwest Canyon below NBC Tower Comment
  CAS-BOT-BC348575  Micropus californicus var. californicus James McMurphy 1908-4-1 s.n. San Mateo Crystal Springs Comment
  CAS-BOT-BC349026  Microseris douglasii subsp. douglasii Ned Cahill 1974-5-13 273 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  JROH1141  Microseris douglasii subsp. douglasii John H. Thomas 1966-4-21 11562 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM52854  Microseris douglasii subsp. douglasii A. D. E. Elmer 1903-05 4721 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC349143  Microseris douglasii subsp. tenella Philip C. Wheeler 1965-4-27 s.n. San Mateo San Bruno Mountain. Buckeye Canyon Comment
  JROH4070  Mimulus aurantiacus var. aurantiacus W. R. Dudley 1895-6-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; top of Ridge near Searsville Dam Comment
  JROH4075  Mimulus aurantiacus var. aurantiacus John Hunter Thomas 1978-4-20 19095 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM5073  Mimulus aurantiacus var. aurantiacus Stewart H. Burnham 1894-4-21 s.n. San Mateo [Unspecified] Comment
  UCR75957  Mimulus aurantiacus var. aurantiacus D. M. Thompson 1992-6-3 1105 San Mateo 1.2 mi south of Hwy 35 (Skyline Blvd) along Hwy 84 (La Honda Road) 378 Comment
  UCD23299  Mimulus grandis Alan T. Whittemore 1976-5-29 s.n. San Mateo San Francisco Fish and Game Refuge. East side of Lower Crystal Springs Lake, on Sawyer's Camp Road, between L. San Andreas and Crystal Springs Lake. 100 Comment
  JROH1708  Minuartia douglasii John Hunter Thomas 1991-5-2 25011 San Mateo Jasper Ridge Biological Preserve, Stanford University; near exclosure Comment
  CAS-BOT-BC384007  Mirabilis jalapa W. Knight; I. Knight 1966-10-4 2053 San Mateo San Bruno Mountain. Near Bayshore Blvd. Comment
  CAS-BOT-BC214068  Monardella villosa Elsie Zeile 1909-5-20 s.n. San Mateo Burlingame Comment
  CAS-BOT-BC214069  Monardella villosa C. F. Baker 1903-6-30 3353 San Mateo Crystal Springs Comment
  CAS-BOT-BC214082  Monardella villosa Cherie Wetzel 1969-6-20 887 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  CAS-BOT-BC214087  Monardella villosa Eric Walther 1919-6-9 s.n. San Mateo Woodside Comment
  CAS-BOT-BC214075  Monardella villosa Elizabeth McClintock 1965-3-25 s.n. San Mateo North Power Line Ridge, San Bruno Mountain Comment
  CAS-BOT-BC214076  Monardella villosa Elizabeth McClintock 1965-8-1 s.n. San Mateo Slope above April Brook, San Bruno Mountain Comment
  CAS-BOT-BC214081  Monardella villosa Cherie Wetzel 1969-7-8 920 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  RSA18315  Monardella villosa Carl B. Wolf 1927-7-14 596 San Mateo Summit of Kings Mt. at junction with Skyline Drive Comment
  CHSC68000  Monardella villosa subsp. franciscana Alison Graff 1993-7-13 M- 52 San Mateo Devils Slide, in arroyos on inland side of Hwy. 1. Comment
  UC203048 Image available Monardella villosa subsp. franciscana A. D. E. Elmer July, 1903 4766 San Mateo San Pedro, San Mateo Co. Comment
  CDA40773  Monardella villosa subsp. franciscana G. D. Barbe 1974-6-4 1825 San Mateo Middle Fork San Pedro Creek, southeast of Oddstad Boulevard, Linda Mar District. Coastal part of county. 0 Comment
  JEPS127892  Monardella villosa subsp. villosa Adam C. Schneider with C. Matt Guilliams and Will Freyman 2013-6-24 306 San Mateo Crystal Springs Reservoir Comment
  UC104640  Monardella villosa subsp. villosa Katharine Brandegee 1905-6-20 San Mateo Near Lake Pilarcitos Comment
  UCLA62413  Monardella villosa subsp. villosa unknown 1903-6-1 4766 San Mateo San Pedro Comment
  HSC24050  Monardella villosa subsp. villosa Mary Katherine Wicksten 1971-6-24 115 San Mateo Huddart Park, by park entrance Comment
  JROH2847  Monardella villosa subsp. villosa John Hunter Thomas 1982-6-7 21026 San Mateo Jasper Ridge Biological Preserve, Stanford University; above Searsville Lake Comment
  RSA101034  Montia fontana G. Oberlander 1950-4-16 632 San Mateo Along stream below San Andreas dam, San Francisco Watershed Reserve Comment
  CAS-BOT-BC508580  Muilla maritima Lawrence Beane 1949-3-30 150 San Mateo Above Redwood City Comment
  CDA31867  Myoporum laetum Robin Breckenridge, K. Filippini 2010-2-18 PDR# 1463755 San Mateo Miramar: Highway 1, next to Frenchman Creek. 0 Comment
  CDA34567  Myosotis latifolia M. Beyers, Z. Bakman, L. Feely, & D. Sozanni 2011-4-4 876 San Mateo Pacifica: San Pedro Valley County Park, along Brooks Creek Trail. 148 Comment
  RSA128901  Myosotis latifolia Roxana S. Ferris 1920-4-26 1960 San Mateo Pescadero Creek at beginning of the canyon. 244 Comment
  UCSB21182  Myosotis latifolia Simpson, C. 1967-3-21 San Mateo Butano Creek; 2.6 miles east of junction of Cloverdale Rd. and Canon Road 45 Comment
  CAS-BOT-BC101773  Myrica californica Walter Knight 1964-9-14 832 San Mateo Peak Mt. Comment
  JROH2697  Myriophyllum aquaticum John Hunter Thomas 1987-5-26 24321 San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake. Comment
  POM145632  Myriophyllum sibiricum L. R. Abrams 1927-7-15 s.n. San Mateo Pond Skyline Blvd. back of south San Francisco. Comment
  CAS-BOT-BC260235  Nassella pulchra John H. Thomas 1958-3-19 7047 San Mateo E facing slope of San Bruno Mountain, just N of South San Francisco 91 Comment
  UCD87483  Nassella pulchra Beecher Crampton 1962-6-11 6502 San Mateo Sharp park suburb of pacifica, Moris' Point Road, west of State Highway 1. Comment
  SEINET10496814  Navarretia atractyloides Mary Susan Taylor 1978-8-30 Taylor 1871 San Mateo Comment
  JROH3205  Navarretia heterodoxa (John H. Thomas) 1983-6-29 22715 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU42  Navarretia mellita C. D. Duncan 1925-7-13 San Mateo Mud Lakes, summit of Coal Mine Ridge above Corte Madera Cr Comment
  POM65123  Navarretia squarrosa C. F. Baker 1903-6-30 3360 San Mateo Pilarcitos Comment
  UCR121584  Navarretia squarrosa George K. Helmkamp, E. A. Helmkamp 1999-6-28 4985 San Mateo Pescadero Creek Watershed, Pescadero Road just north of Loma Mar 107 Comment
  RSA101011  Nemophila menziesii var. atomaria G. Oberlander 1950-4-2 569 San Mateo Near San Andreas Lake, San Francisco Watershed Reserve Comment
  CAS-BOT-BC219471  Nemophila parviflora Margaret A. Barry 1937-5-15 122 San Mateo On Coal Mine Ridge Comment
  CAS-BOT-BC219472  Nemophila parviflora C. F. B. 1902-4-12 509 San Mateo La Honda Comment
  CAS-BOT-BC219485  Nemophila parviflora L. Constance 1938-5-16 2241 San Mateo Near Crystal Springs Lake, 5 miles southwest of San Mateo 121 Comment
  CAS-BOT-BC219477  Nemophila parviflora Josephine D. Randall 1908-2-16 s.n. San Mateo Santa Cruz Peninsula. Corte de Madre Canon [Canyon] near Alpine Road Comment
  JROH2743  Nemophila parviflora var. parviflora Herbert Dengler 1967-4-3 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC140431  Oemleria cerasiformis David D. Keck 1932-3-6 1396 San Mateo Near La Honda, Santa Cruz Mountains Comment
  CAS-BOT-BC140432  Oemleria cerasiformis Reed C. Rollins 1941-2-22 2938 San Mateo About 10 miles northwest of Palo Alto Comment
  CAS-BOT-BC140437  Oemleria cerasiformis James R. Shevock 1973-1-1 2325 San Mateo Along Skyline Drive, Calif. highway 35. Near Lower Crystal Springs Reservoir Comment
  UC652594  Oenothera elata subsp. hookeri L. R. Abrams and Ira Wiggins 1939-6-3 438 San Mateo 2 mi n Pigeon Point Lighthouse Comment
  RSA210940  Oenothera elata subsp. hookeri E. K. Balls 1969-9-16 12176 San Mateo Highway 1-13 mi. NW from Santa Cruz County line 6 Comment
  SJSU15793  Orobanche fasciculata Toni Corelli 2010-7-8 642 San Mateo Bean Hollow State Beach along Arroyo de los Frijoles Trail 10 Comment
  RSA401986B  Orthocarpus densiflorus D. D. Keck 1932-5-6 1470 San Mateo One mile south of San Mateo, on US Hwy 101. Comment
  RSA402011B  Orthocarpus erianthus Glenn A. Gorelick 1967-4-15 s.n. San Mateo San Bruno Mts. overlooking Daly City near San Francisco. Comment
  RSA523837  Orthocarpus erianthus Gordon H. True Jr. 1936-6-7 487 San Mateo 2 miles south of Pescadero. Along coast highway. 15 Comment
  POM126837  Orthocarpus erianthus var. roseus R. L. Pendleton 1907-4-20 618 San Mateo Ocean View. 122 Comment
  RSA130824  Orthocarpus faucibarbatus var. albidus W. R. Dudley 1896-4-17 s.n. San Mateo Near Pebble Beach, Pescadero. Comment
  POM15377  Orthocarpus floribundus A. D. E. Elmer 1903-04 4522 San Mateo South San Francisco. Comment
  CAS-BOT-BC173658  Orthocarpus pusillus Peter Rubtzoff 1976-5-22 8549 San Mateo San Bruno Mountain. Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction, East Fork Colma Creek Canyon. Comment
  JROH298  Osmorhiza berteroi John Hunter Thomas 1986-5-1 23998 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET12119094  Osmorhiza chilensis Unknown 1932-1 9173 San Mateo Los Francos Woods Comment
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Oct 12 2021
  SEINET6948092  Oxalis corniculata Robert A. Evers, Clara V. Evers 1975-8-24 115022 San Mateo Trailer Villa, Redwood City. Comment
  CHSC19693  Oxalis oregana L. A. Wright Jr. 1971-4-4 26 San Mateo Collected ca. 10 ft off the s edge of Canyon Rd, ca. 2 mi e from its junc with Cloverdale Rd, ca. 4 mi s off Pescadero Rd, about 3 mi e off Hwy 1. Near entrance to Butano Girl Scout Camp. 152 Comment
  RSA120752  Oxalis oregana S. S. Tillett, I. Sternback 1956-6-24 524 San Mateo Middleton property, behind (N.) Portola Camp Store, just outside Portola State Park. 396 Comment
  RSA130337  Oxalis oregana Helen M. Edwards 1917-3-8 s.n. San Mateo Woodside. Comment
  RSA130349  Oxalis oregana Josephine Randall 1908-3-28 s.n. San Mateo Kings Mt. Comment
  SEINET3347652 Image available Oxalis oregana Janet Jacob 1951-4-1 60 San Mateo 7 miles E of Pescadero Comment
  CAS-BOT-BC318248  Packera breweri Amos Arthur Heller 1907-5-23 8565 San Mateo Back of San Mateo on the Half Moon Bay road. Comment
  CAS-BOT-BC318249  Packera breweri W. R. Dudley 1893-5-27 s.n. San Mateo Near Summit Springs, Kings Mt. Comment
  JROH5347  Paspalum distichum John Hunter Thomas 1979-9-9 19732 San Mateo Jasper Ridge Biological Preserve, Stanford University. Edge of dam. Comment
  SEINET10592940  Paspalum distichum Charles F. Baker 1902-10-20 Baker 1836 San Mateo Searsville. About the lake shore. Matted colonies from rootstocks which creep over the surface of mud. Comment
  JROH4112  Pedicularis densiflora John H. Thomas 1973-4-14 16571 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4114  Pedicularis densiflora John H. Thomas 1976-4-2 18080 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS70087  Pedicularis densiflora L. R. Heckard 1972-4-16 2905 San Mateo just below East Dam Lower Crystal Springs Reservoir Comment
  JROH4107  Pedicularis densiflora Duncan M. Porter 1961-1-18 736 San Mateo Jasper Ridge Biological Preserve, Stanford University; Westridge end of Jasper Ridge Comment
  POM226859  Pedicularis densiflora L. R. Abrams 1914-3-1 5058 San Mateo Kings Mountain Road, Santa Cruz Mtns. 152 Comment
  JEPS109941 Image available Pedicularis dudleyi Dean W. Taylor 2004-4-19 19058 San Mateo Portola State Park, roadcut just north of the park boundary sign, about 100 meters S of junction of Old Page Mill Road with Portola State Park road 182 Comment
  JROH99  Pellaea andromedifolia John H. Thomas 1974-11-5 17662 San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail below dam. Comment
  CAS-BOT-BC327980  Pentachaeta alsinoides John H. Thomas 1961-4-29 9184 San Mateo Jasper Ridge, about 5 mi SW of Palo Alto. 182 Comment
  CAS-BOT-BC330496  Pentachaeta bellidiflora Ned Cahill 1974-4-29 205 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City. Comment
  RSA0008522  Pentachaeta bellidiflora L. S. Rose 1948-3-31 48032 San Mateo Skyline Blvd. above San Andreas Lake. 152 Comment
  CAS-BOT-BC77012  Pentagramma triangularis subsp. triangularis David D. Keck 1932-2-12 1365 San Mateo La Honda Road, east slope of Coast Range above Searsville Lake. 304 Comment
  JROH107  Pentagramma triangularis subsp. triangularis John H. Thomas 1956-4-7 5620 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  POM259787  Perideridia gairdneri subsp. gairdneri I. L. Wiggins, Roxana Ferris 1939-8-2 9295 San Mateo Ano Nuevo Point Comment
  JROH311  Perideridia kelloggii John H. Thomas 1975-7-31 17981 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3245  Persicaria amphibia John H. Thomas 1964-10-2 10510 San Mateo Jasper Ridge Biological Preserve, Stanford University. Edge of Searsville Lake near bridge. Comment
  JROH3246  Persicaria amphibia John H. Thomas 1970-7-5 15676 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3269  Persicaria lapathifolia Roxana S. Ferris 1924-10-6 4094 San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake. Comment
  CDA8457  Petasites frigidus var. palmatus T. C. Fuller 1960-4-2 4084 San Mateo Alpine Road, 0.8 mile east of Pescadero Road, 2.8 miles southeast of La Honda. 0 Comment
  UC1206459  Petasites frigidus var. palmatus Roxana S. Ferris 1918-3-30 750 San Mateo 1 mi above Evans Creek; Peters Creek Comment
  JROH4173  Petunia parviflora W. R. Dudley 1909-10-31 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake Comment
  UC1211925  Phacelia californica John H. Weiler and B. Hirano 1961-3-22 6136 San Mateo steep bluff along Hwy 1 0.2 mi s Devil's Slide (n of Moss Beach) Comment
  UC131689  Phacelia californica C. F. Baker 1902-5-1 690 San Mateo Crystal Springs Comment
  SEINET12280044  Phacelia californica Unknown 1932-1 9146 San Mateo Sky Line Drive Comment
  UC306570  Phacelia distans A. D. E. Elmer April 1903 4862 San Mateo San Pedro Comment
  UC202785  Phacelia malvifolia A. D. E. Elmer May 1903 4784 San Mateo San Bruno Hills Comment
  SD38340  Phacelia ramosissima Edith A. Purer 1933-5-27 3651 San Mateo Spring Valley Lakes. Comment
  JROH2765  Phacelia rattanii D. E. Breedlove 1971-5-11 19332 San Mateo Jasper Ridge Biological Preserve, Stanford University; at Pinon Road along fence Comment
  JROH2766  Phacelia rattanii Woody Woodward 1979-5-29 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC258930  Phalaris aquatica Elizabeth McClintock; Paul Reeberg 1988-5-23 s.n. San Mateo San Bruno Mountains. Along Harold Avenue, Brisbane 53 Comment
  CDA2281  Phalaris aquatica T. C. Fuller 1967-6-13 15947 San Mateo Road to San Mateo, 0.7 miles east of Skyline Blvd., east above Crystal Springs Lake. 0 Comment
  JROH5373  Phalaris aquatica John Hunter Thomas 1987-5-26 24324 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR101609  Phalaris aquatica George K. Helmkamp, E. A. Helmkamp 1998-5-16 3743 San Mateo Portola Valley, Golden Hills Rd along Los Trancos Creek 107 Comment
  JROH5381  Phalaris californica H. J. Dengler 1961-4-30 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. In seep about 25' NNE of the serpentine. 171 Comment
  SEINET4692076  Phalaris californica A. D. E. Elmer 1903-1 4699 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC222503  Pholistoma auritum var. auritum Philip Wheeler 1965-6-16 s.n. San Mateo San Bruno Mountain. Gladys Canyon in Brisbane Comment
  UC1244706  Phoradendron villosum John H. Thomas 1959-8-22 8080 San Mateo ca. 5 mi. s.w. Palo Alto (Jasper Ridge); Jasper Ridge 152 Comment
  RSA177001  Picris echioides John H. Thomas 1964-11-15 10525 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto; at edge of Searsville Lake. Comment
  CDA34055  Pinus attenuata D. G. Kelch, David Gernandt, Steffi Ickert-Bond, Yingli Guo 2011-4-22 11 .155-B San Mateo Santa Cruz Mountains; Along Route 9, ~5 km E of Big Basin Redwoods. Comment
  SEINET3871791  Pinus attenuata K. Allred 1975-1-3 1267 San Mateo Half Moon Bay, Dune Beach.; 0 Comment
  SEINET6175930 Image available Pinus coulteri Ralph R. Wilson 1939-7-25 435 San Mateo Campus of Leland Stanford.; 0 Comment
  JEPS46880  Pinus radiata W. L. Jepson 1910-8-18 4166 San Mateo Ano Nuevo Creek Comment
  JROH120  Pinus radiata John Hunter Thomas 1977-5-19 18616 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM287602  Plagiobothrys bracteatus Lyman Benson 1930-5-1 2063 a San Mateo Stanford University 107 Comment
  RSA262234  Plagiobothrys chorisianus John H. Thomas 1961-5-7 9258 San Mateo San Bruno Mountain, in northern part of county. 305 Comment
  UC191864  Plagiobothrys chorisianus Edward Lee Greene 1886-5-10 San Mateo Belmont Comment
  UC200768  Plagiobothrys chorisianus C. F. Baker 1902-3-30 429 San Mateo Crystal Springs Lake Comment
  UC78190  Plagiobothrys chorisianus K. Brandegee 1892-4-9 San Mateo South San Francisco Comment
  CAS-BOT-BC228155  Plagiobothrys chorisianus var. chorisianus W. R. Dudley 1893-5-27 s.n. San Mateo The Santa Cruz Mountain Peninsula. Between King's Mountain and La Honda, below Hayman's Ranch Comment
  CAS-BOT-BC228175  Plagiobothrys chorisianus var. hickmanii W. R. Dudley 1900-3-16 s.n. San Mateo The Santa Cruz Mountain Peninsula. Along road between King's [Kings] Mountain and Half Moon Bay Comment
  JROH3107  Plantago erecta John H. Thomas 1955-5-6 5006 San Mateo Jasper Ridge Biological Preserve, Stanford University 182 Comment
  JROH3112  Plantago erecta John H. Thomas 1974-4-13 17151 San Mateo Jasper Ridge Biological Preserve, Stanford University; near area H Comment
  JROH3114  Plantago erecta John H. Thomas 1977-5-4 18599 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge entrance Comment
  UC2049867  Plantago lanceolata H. W. Johansen 1955-4-23 81 San Mateo Crystal Springs Road, 2 miles W of San Mateo Comment
  JEPS15530  Plantago maritima var. californica G. Thomas Robbins 1956-8-18 3736 San Mateo near mouth of Pomponio Creek Comment
  UCD164004  Plantago subnuda Peter Rubtzoff 1977-11-24 9142 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction, East Fork Colma Creek Canyon near upper rim. Comment
  CAS-BOT-BC92017  Platystemon californicus Elizabeth McClintock 1965-6-13 s.n. San Mateo San Bruno Mountain. Colma Canyon. Comment
  UC1057447  Platystemon californicus G. Thomas Robbins 1937-4-11 95 San Mateo along road to Woodside near Spring Valley Lakes; near Springs Valley Lakes Comment
  CAS-BOT-BC92015  Platystemon californicus John H. Thomas 1969-4-24 14904 San Mateo near Canada College, Redwood City, near Farm Hill Drive. Comment
  JROH4245  Plectritis congesta subsp. brachystemon John Hunter Thomas 1981-4-23 20490 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4246  Plectritis congesta subsp. brachystemon Toni Corelli 2012-4-15 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University 185 Comment
  CAS-BOT-BC260963  Pleuropogon californicus var. californicus A. D. E. Elmer 1903-6-1 4848 San Mateo Milbrae Comment
  JROH5394  Pleuropogon californicus var. californicus Ann Lambrecht 2006-5-1 34 San Mateo Jasper Ridge Biological Preserve, Stanford University. Vernally wet area between Sand Hill Road and main entry road to preserve. 121 Comment
  SEINET10611508  Pleuropogon californicus var. californicus Adolph D. E. Elmer Elmer 4848 San Mateo San Bruno Hills. Comment
  CAS-BOT-BC255563  Poa annua W. R. Dudley 1894-3-26 s.n. San Mateo Santa Cruz Mountain Peninsula. By road from Pescadero to San Gregorio Comment
  JROH5777  Poa howellii John Rawlings 2016-4-16 1702 San Mateo Jasper Ridge Biological Preserve, Stanford University; at the first footbridge on Trail 12 near the old quarries. 108 Comment
  JROH5420  Poa pratensis subsp. pratensis John Rawlings 2012-5-8 1108 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville store marker sign west edge of Road L 107 Comment
  CAS-BOT-BC243110  Poa secunda subsp. secunda David D. Keck 1933-5-11 2311 San Mateo Crystal Springs Lake, about E side Comment
  JROH5425  Poa secunda subsp. secunda John Hunter Thomas 1967-6-1 12958 San Mateo Jasper Ridge Biological Preserve, Stanford University; rocky north slope, Searsville Ridge Comment
  SJSU15813  Poa unilateralis subsp. unilateralis John Rawlings, Toni Corelli 2016-5-13 1895 San Mateo Bean Hollow State Beach south bluff above beach 11 Comment
  SJSU15966  Poa unilateralis subsp. unilateralis Toni Corelli, John Rawlings 2016-5-27 1844 San Mateo Bean Hollow bluff trail, west of Hwy 1 south of Pescadero 8 Comment
  SJSU16026  Poa unilateralis subsp. unilateralis John Rawlings, Toni Corelli 2016-5-13 1789 San Mateo Vallemar Bluff, Moss Beach. USGS Montara Mountain OE W 7.5 Minute (1:24,000 Scale) Topographic Map. 11 Comment
  JROH5623  Pogogyne serpylloides John Rawlings 2014-5-9 1236 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail 2 extension about 115 meters from its Escobar terminus at the wooden trail marker near the boundary fence east of Escobar Gate 146 Comment
  CAS-BOT-BC232895  Polemonium carneum L. R. Abrams 1916-4-22 5576 San Mateo Santa Cruz Mountain Peninsula. Pilarcitos Canon 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
  UC168661  Polygonum amphibium var. emersum C. F. Baker 1902-10-20 1835 San Mateo Searsville Comment
  CDA2829  Polygonum arenastrum Buchanan 1960-4-28 4107 San Mateo Harbor Blvd. & Freeway, Redwood City. 0 Comment
  JROH3263  Polygonum aviculare subsp. depressum John Hunter Thomas 1981-10-25 20765 San Mateo Jasper Ridge Biological Preserve, Stanford University. Delta. Comment
  UCR240610  Polygonum paronychia T. B. Salvato, Lia V. D. Mansfield, Joel-Henry J. Mansfield 2008-6-14 3526 San Mateo Central Coast, Pebble Beach State Beach, 12.5 mi north of Santa Cruz Co. line, along Hwy 1, Pacific Coast Hwy, 1.65 mi south of road to Pesacadero and 16 mi south of Half Moon Bay 11 Comment
  CAS-BOT-BC419847  Polygonum patulum L. R. Abrams 1901-9-1 2213 San Mateo Cooley's Landing near Palo Alto Comment
  POM144853  Polygonum punctatum C. F. Baker 1902-10-20 1858 San Mateo Searsville. Comment
  JROH5945  Polypodium californicum John Rawlings 2017-2-21 1957 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail 6, just south of prairie opening in serpentine chaparral 123 Comment
  CAS-BOT-BC76910  Polypodium californicum W. R. Dudley 1896-2-16 s.n. San Mateo Santa Cruz Mountain Peninsula - Devil's Canyon, Black Mountain Comment
  JROH82  Polypodium californicum John H. Thomas 1977-4-2 18510 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  UC42880  Polypodium calirhiza McLean 1873-1 San Mateo Pescadero Comment
  CAS-BOT-BC72111  Polypodium scouleri L. R. Abrams 1926-5-26 11217 San Mateo San Bruno Hills near Daly City Comment
  UC42914  Polypodium scouleri J. Burtt Davy 1893-6-22 San Mateo top of Pilarcitos Canyon Comment
  UC62435  Polypodium scouleri W. C. Blasdale 1893-6-23 San Mateo San Mateo Comment
  UCD150642  Polypodium scouleri Collector unknown 1974-5-30 28 San Mateo San Bruno Mtn. Radio Rd., before first radio station, and west of Radio Rd. below first radio station. On roadcut. 365 Comment
  JROH5435  Polypogon interruptus John Hunter Thomas 1983-5-23 22247 San Mateo Jasper Ridge Biological Preserve, Stanford University. Roadside drainage near shack side & low-flow crossing. Comment
  JROH5436  Polypogon interruptus W. Lennihan 1989-6-22 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. San Francisquito creek -- above low-flow causeway on left, under trees in rocks. 81 Comment
  UC767859  Polypogon interruptus R. F. Hoover 1940-9-1 4550 San Mateo La Honda summit Comment
  CAS-BOT-BC237345  Polypogon monspeliensis Ira L. Wiggins 1973-6-24 22019 San Mateo In bed of San Francisquito Creek, 50-60 m upstream from Pope Street Bridge, along boundary between San Mateo and Santa Clara counties Comment
  JROH5450  Polypogon monspeliensis John Hunter Thomas 1980-11-27 20189 San Mateo Jasper Ridge Biological Preserve, Stanford University. Delta. Comment
  POM313142  Polypogon monspeliensis H. L. Mason, Verne Grant 1946-8-28 13094 San Mateo On highway 5, about 3 miles south of Daly City Road. Comment
  UC1132915  Polypogon monspeliensis G. E. Sindel 1935-5-25 306 San Mateo Mouth of Pescadero Creek; Santa Cruz Quad., mouth of Pescadero Creek Comment
  JROH4822  Polypogon viridis John Rawlings 2011-8-2 1081 San Mateo Jasper Ridge Biological Preserve, Stanford University. Bed of San Francisquito Creek near Dennis Martin site. 71 Comment
  SJSU4367  Polypogon viridis A. J. Cortopassi 1957-5-17 8 San Mateo Canyon Rd, Burlingame Comment
  CAS-BOT-BC72229  Polystichum dudleyi Alice Eastwood 1933-5-31 s.n. San Mateo Butano Canyon Comment
  UCD136472  Polystichum dudleyi Rimo Bacigalupi; J. H. Thomas and L. R. Heckard 1961-5-23 7713 San Mateo East side of Peters Creek, 1/2 mile north of its confluence with Pescadero Creek. 137 Comment
  CAS-BOT-BC76605  Polystichum munitum Margaret Barry 1938-5-29 267 San Mateo Corte Madera Creek, near Coal Mine Ridge. Comment
  CAS-BOT-BC76607  Polystichum munitum C. F. Baker 1902-1-15 321 San Mateo West side King's Mountain Comment
  JROH53  Polystichum munitum Lawrence J. Winship 1974-11-2 7 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  CAS-BOT-BC166964  Polystichum munitum Peter Rubtzoff 1976-10-5 8905 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction, upper part of East Fork Colma Creek Canyon. Comment
  UC1174501  Populus trichocarpa W. R. Dudley 1902-9-21 San Mateo on Whipple Road s Crystal Springs Lake (and w of Serpentine); Santa Cruz Peninsula, s of Crystal Springs Lake Comment
  CAS-BOT-BC445246  Portulaca oleracea Fay Gilbert 1920-6-1 s.n. San Mateo Santa Cruz Mountain Peninsula. Redwood City Comment
  JROH5510  Potamogeton crispus Alan Grundman 1976-5-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake Comment
  CAS-BOT-BC453832  Potamogeton nodosus V. F. Hesse 1961-8-24 3020 San Mateo About 4 miles south of Pescadero 60 Comment
  UC1099818  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-8-25 1552 San Mateo Sharp Park Comment
  UC814176  Potamogeton pectinatus Ira L. Wiggins and Roxana S. Ferris 1939-8-2 9293 San Mateo Ano Nuevo Point Comment
  UCR141402  Potamogeton pectinatus June Latting 1975-6-8 s.n. San Mateo Central Coast, slough across from Pescadero dump (on Bean Hollow Rd.), west of Pescadero 9 Comment
  CAS-BOT-BC454000  Potamogeton pectinatus Malcom A. Nobs; S. Galen Smith 1949-8-25 1552 San Mateo At Sharp Park Comment
  UCR63022  Potentilla anserina Donald G. Nelson 1939-6-14 617 San Mateo East side of Skyline Blvd., a few miles south of Daly City. Large permanent pond 196 Comment
  CAS-BOT-BC141938  Potentilla anserina subsp. pacifica Adele Lewis Grant 1917-5-6 941 San Mateo Pebble Beach at Pescadero Comment
  CAS-BOT-BC144833  Potentilla rivalis George Oberlander 1950-3-18 560 San Mateo Pilarcitos Canyon Comment
  UCSB17159  Poterium sanguisorba Schulte, John 1963-4-27 San Mateo Jasper Ridge, 3 miles southwest of Stanford Campus, between Santa Clara Valley and main front of Santa Cruz Mountains 152 Comment
  JROH4668  Prosartes hookeri John H. Thomas 1964-4-19 10328 San Mateo Jasper Ridge Biological Preserve, Stanford University. Area below dam in among redwoods near creek. Comment
  JROH4672  Prosartes hookeri John H. Thomas 1973-5-5 16761 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4674  Prosartes hookeri John H. Thomas 1979-4-10 19448 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC516350  Prosartes hookeri George Oberlander 1950-3-11 587 San Mateo Pilarcitos Canyon, San Francisco Watershed Reserve Comment
  CAS-BOT-BC517386  Prosartes smithii Mrs. Boot 1940-4-7 1731 San Mateo Canyon near Half Moon Bay and Skyline Highway junction Comment
  SEINET12044821  Prosartes smithii J. D. Randall 1908-1 s.n. San Mateo King's Mt, Santa Cruz Peninsula Comment
  SEINET8502087 Image available Prosartes smithii L. M. Henry, M. E. Springer 1946-7-21 372 San Mateo La Honda Comment
  RSA181225  Prunella vulgaris var. lanceolata John H. Thomas 1964-6-19 10430 San Mateo 0.9 miles S of Tunitas Creek near Coast Hwy, 61 Comment
  CAS-BOT-BC158585  Prunus Walter Knight; Irja Knight 1965-5-15 s.n. San Mateo On ridge above Bitter Cherry Ravine Comment
  CAS-BOT-BC158175  Prunus emarginata L. R. Abrams 1916-4-22 5575 San Mateo Pilarcitos [Canon] Canyon Comment
  CAS-BOT-BC158176  Prunus emarginata Peter H. Raven 1950-4-16 1810 San Mateo Above [Visitation] Visitacion Valley, San Bruno Mts. 182 Comment
  UC12763  Prunus ilicifolia J. Burtt Davy 1893-6-17 San Mateo Belmont Comment
  CAS-BOT-BC154651  Prunus subcordata William R. Dudley 1904-4-7 s.n. San Mateo Los Trancos Cr., above Allen place Comment
  CAS-BOT-BC154652  Prunus subcordata Adoph Holme 1929-4-1 s.n. San Mateo Berenda Farm near Redwood City Comment
  CAS-BOT-BC154657  Prunus subcordata W. R. Dudley 1904-4-10 s.n. San Mateo Alpine road, near the deep ravine bridge Comment
  CAS-BOT-BC356473  Pseudognaphalium beneolens Roxana S. Ferris 1920-9-3 2052 San Mateo Santa Cruz Mountain Peninsula. Near upper Mud Lake, Coal Mine ridge Comment
  UC71894  Pseudognaphalium californicum J. Burtt Davy Jun 21 1893-Jun 23 1893 1123 San Mateo Pilarcitos Lake and Canon Pilarcitos Lake, Pilarcitos Canon Comment
  CAS-BOT-BC356853  Pseudognaphalium californicum Walter Knight 1963-10-7 324 San Mateo San Bruno Mountain. Cow Trough Ravine Comment
  UCD166153  Pseudognaphalium luteoalbum Jack Major; M. Forde and S. Bamberg 1962-4-3 737 San Mateo Above Coastways Ranch on Finney Creek. (Exact location unknown. Coordinates estimated by label maker). Comment
  SDSU3737  Pseudognaphalium microcephalum D. F. Howe 1964-8-13 3958 San Mateo Near ocean on #1; near San Francisco Co. line. Comment
  CAS-BOT-BC344868  Pseudognaphalium stramineum Peter Rubtzoff 1975-10-11 8422 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road Junction, San Bruno Mountains. Comment
  CAS-BOT-BC344869  Pseudognaphalium stramineum Peter Rubtzoff 1975-11-8 8438 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road Junction, San Bruno Mountains. Comment
  JEPS34068  Pseudognaphalium stramineum L. M. Newlon 1921-7-30 248 San Mateo sea shore from Salada to Mussel Comment
  UC31976  Pseudognaphalium stramineum F. P. McLean 1874-6-1 San Mateo Pescadero Comment
  CAS-BOT-BC361563  Pseudognaphalium stramineum Walter Knight; Irja Knight 1965-3-15 1235 San Mateo North facing - Colma Canyon - San Bruno Mountain Comment
  UCD135229  Pseudognaphalium stramineum Lewis S. Rose 1966-8-6 66079 San Mateo San Bruno Mountain, head of Colma Canyon. 121 Comment
  CAS-BOT-BC85903  Pseudotsuga menziesii unspecified 1894-3-24 s.n. San Mateo Fl. near Pescadero Cr. Comment
  RSA15295  Pseudotsuga menziesii C. B. Wolf 1927-4-3 265 San Mateo 1 mile above La Honda. Santa Cruz Mountains Comment
  RSA384644  Pseudotsuga menziesii L. H. Jones 1909-3-13 s.n. San Mateo King s Mountain Road, Stanford University. 610 Comment
Read comments
Sep 22 2011
  UC766970  Pseudotsuga menziesii var. menziesii R. F. Hoover 1941-2-12 4760 San Mateo above La Honda; La Honda Creek Comment
  CAS-BOT-BC362023  Psilocarphus tenellus Peter H. Raven 1950-4-16 1804 San Mateo Summit ridge, San Bruno Mts. 243 Comment
  JROH1196  Psilocarphus tenellus John Hunter Thomas 1992-4-23 25146 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC362017  Psilocarphus tenellus R. S. Ferris 1925-5-1 s.n. San Mateo Selah Chamberlain Residence, Woodside Comment
  UCR143149  Psilocarphus tenellus var. tenellus L. S. Rose 1933-5-3 33140 San Mateo Montara 305 Comment
  CAS-BOT-BC72659  Pteridium aquilinum George Oberlander 1950-7-15 1120 San Mateo Pilarcitos Canyon Comment
  SD39954  Pteridium aquilinum var. pubescens Edith A. Purer 1933-7-27 5363 San Mateo Pigeon Point Comment
  JEPS8435  Pterostegia drymarioides unknown 1925-5-28 11 San Mateo Salada Comment
  RSA149177  Pterostegia drymarioides John H. Thomas 1961-5-13 9333 San Mateo Franklin Point. Comment
  UC635041  Pterostegia drymarioides Herbert L. Mason 1927-4-23 3683 San Mateo along rd. between La Honda and Pescadero Creek Comment
  UCSC007774  Pterostegia drymarioides Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  UCD18553  Puccinellia lemmonii Roman Gankin 1950-7-15 27 San Mateo city of Menlo Park, Hermosa Way, along roadside. 30 Comment
  UCD92957  Puccinellia maritima August L. Hormay 1932-5-29 s.n. San Mateo San Bruno. Comment
  RSA0082794  Pyrola aphylla H. L. Mason 1921-7-3 s.n. San Mateo Butano Ridge. Comment
  UC306551  Pyrola picta A. D. E. Elmer 1903-6-1 4297 San Mateo Pescadero Comment
  CAS-BOT-BC362361  Pyrrocoma racemosa var. racemosa L. R. Abrams 1906-9-29 s.n. San Mateo Cooley's [Cooley] Landing Comment
  CAS-BOT-BC61705  Quercus agrifolia Elizabeth McClintock 1972-3-26 s.n. San Mateo Middle Buckeye Canyon, San Bruno Mountain Comment
  CAS-BOT-BC61707  Quercus agrifolia Walter Knight; Irja Knight 1963-8-5 s.n. San Mateo Buckeye Canyon, near ridge, San Bruno Mountain Comment
  HSC23978  Quercus agrifolia Mary Katherine Wicksten 1971-8-20 135 San Mateo Huddart Park, Oak Area Comment
  SEINET13953029 Image available Quercus agrifolia Lewis S. Rose 1964-1 64012 San Mateo Emerald Lake, west of Redwood City hills, 400 feet in altitude 122 Comment
  SEINET9326838  Quercus agrifolia Unknown 1938-11-6 San Mateo Woodside, hill slopes. Comment
  JROH2462  Quercus agrifolia var. agrifolia John H. Thomas 1974-6-30 17461 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2464  Quercus agrifolia var. agrifolia John H. Thomas 1978-5-23 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2471  Quercus douglasii John H. Thomas 1968-4-19 14296 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC94274  Quercus durata Lewis S. Rose 1964-9-5 64068 San Mateo Emerald Lake, W of Redwood City 243 Comment
  CAS-BOT-BC94276  Quercus durata John H. Thomas 1969-10-19 15486 San Mateo near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  CAS-BOT-BC94281  Quercus durata James McMurphy 1907-8-6 s.n. San Mateo between Woodside and Crystal Springs Comment
  POM224196  Quercus durata Annetta Carter 1934-10-13 728 San Mateo Long Branch of Isabel Creek, half mile above jct with Isabel Creek, Mt Hamilton Range. 549 Comment
  UC942919  Quercus durata Lewis S. Rose 1950-5-20 50136 San Mateo w of Redwood City; Emerald Lake Region 243 Comment
  JROH2483  Quercus durata var. durata John H. Thomas 1970-4-28 15608 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  OBI62796  Quercus durata var. durata Lewis S. Rose 1964-9-5 64068 San Mateo Emerald Lake, W of Redwood City 244 Comment
  HSC23989  Quercus kelloggii Mary Katherine Wicksten 1971-6-29 133 San Mateo Huddart Park Ridge between Oak Area and Redwood Area Comment
  JEPS48850  Quercus kelloggii James G. Daly 1934-1 545 San Mateo near crossroads of Skyline Blvd. and La Honda road (watershed of San Gregorio Creek); Santa Cruz Mts., San Gregorio Creek Comment
  JROH2501  Quercus kelloggii John H. Thomas 1959-4-5 7664 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA477345  Quercus kelloggii L. H. Jones 1909-3-3 s.n. San Mateo King's Mountain Road, Stanford University. 107 Comment
Read comments
Sep 22 2011
  UCD46676  Quercus kelloggii Ira L. Wiggins 1946-5-2 s.n. San Mateo La Honda road, above Searsville Reservoir, San Mateo County, California. 457 Comment
  JROH2516  Quercus lobata John H. Thomas 1967-5-31 12945 San Mateo Jasper Ridge Biological Preserve, Stanford University; above lake Comment
  SBBG41440  Quercus parvula var. shrevei J. T. Howell 1971-4-12 San Mateo Butano St Park, Santa Cruz Mtns Comment
  CAS-BOT-BC362547  Rafinesquia californica Fred Hemphill 1973-5-14 824 San Mateo San Carlos. Chaparral area north of Malabar Rd. and Melendy Dr. 207 Comment
  POM290129  Rafinesquia californica Lyman Benson 1937-6-27 8391 San Mateo Summit west of Belmont; Santa Cruz Mt. Range; S. F. Bay Watershed. 152 Comment
  CAS-BOT-BC379081  Ranunculus aquatilis var. diffusus Roxana Ferris 1918-3-31 756 San Mateo at edge of Helvetio (Mud) Lake; Coal Mine Ridge Comment
  CAS-BOT-BC379082  Ranunculus aquatilis var. diffusus W. R. Dudley 1906-5-22 s.n. San Mateo Largest Pond, Coal Mine Ridge Comment
  JEPS60724  Ranunculus californicus W. L. Jepson 1921-4-3 9116 San Mateo canyon near Colma Comment
  UC665800  Ranunculus californicus Ira L. Wiggins 1941-4-17 9719 San Mateo near junction of road to California Sanitarium and Woodside-Half Moon Bay road Comment
  POM268423  Ranunculus californicus Arthur L. Cohen 1935-4-21 618 San Mateo Jasper Ridge, San Francisquito Creek. 122 Comment
  CAS-BOT-BC378525  Ranunculus californicus var. californicus L. R. Abrams 1901-3-1 1148 San Mateo Santa Cruz Mts. Comment
  CAS-BOT-BC378530  Ranunculus californicus var. californicus Elizabeth McClintock 1965-3-28 s.n. San Mateo on grassy slope in flower garden adjacent to April Brook Comment
  CAS-BOT-BC378544  Ranunculus californicus var. californicus John H. Thomas 1969-4-30 15032 San Mateo serpentine near Canada College, Redwood City, just off of Farm Hill Blvd Comment
  SBBG51497  Ranunculus californicus var. californicus J. Doty 1969-3-26 600 San Mateo 100 yards E of the jct of Hwys 35 and 92, near summit of Coast Range Comment
  CAS-BOT-BC378728  Ranunculus californicus var. cuneatus John H. Thomas 1955-3-5 4679 San Mateo coastal bluffs north of mouth of San Gregorio Creek 0000000000000000000000000 30 Comment
  UC575705  Ranunculus hebecarpus Lewis S. Rose 1935-5-1 35136 San Mateo Redwood City Comment
  UC481014  Ranunculus hebecarpus Franklin P. Nutting April, 1895 San Mateo Comment
  CAS-BOT-BC83429  Ranunculus lobbii A. D. E. Elmer 1903-4-1 4734 San Mateo Alpine School House. Comment
  JROH3495  Ranunculus muricatus John Hunter Thomas 1978-4-22 19105 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3496  Ranunculus muricatus John Hunter Thomas 1983-4-5 21327 San Mateo Jasper Ridge Biological Preserve, Stanford University. Low-flow crossing Comment
  POM256793  Ranunculus muricatus D. D. Keck 1940-5-19 5046 San Mateo Half Moon Bay, in low, fallow fields juct N of Tow Comment
  POM268819  Ranunculus repens W. R. Dudley 1906-10-12 s.n. San Mateo Pond 15 Comment
  UCD97311  Ranunculus trilobus Phil Greer 2002-4-17 s.n. San Mateo Hwy 101, in Half Moon Bay. Comment
  CAS-BOT-BC74339  Raphanus sativus Lous F. Pitelka 1973-4-30 s.n. San Mateo Bolsa Point, about 1 mile north of Pigeon Point and about 39 miles south of San Francisco. Comment
  JROH5873  Raphanus sativus Ann Lambrecht 2011-7-5 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; at Bear Creek crossing near Preserve boundary fence Comment
  POM283036  Rhamnus californica Lyman Benson 1934-7-29 6110 San Mateo Crystal Springs Lake; Mt. Range: Santa Cruz; Watershed: S. F. Bay. 152 Comment
  CAS-BOT-BC55885  Rhamnus crocea Elizabeth McClintock; Carlyn Halde; Walter Knight 1963-6-23 s.n. San Mateo Lower part of Colma Canyon Comment
  CAS-BOT-BC55887  Rhamnus crocea J. I. McMurphy 1906-4-4 55 San Mateo Los Trancos Creek, Santa Cruz Mts. 182 Comment
  CAS-BOT-BC55892  Rhamnus crocea Carl B. Wolf 1927-8-7 717 San Mateo At Schenkel's Camp back of Stanford University Campus. Los Trancos Creek Comment
  JROH3556  Rhamnus crocea H. L. Mason 1921-3-9 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3562  Rhamnus crocea D. E. Breedlove 1971-5-31 19344 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  JROH3564  Rhamnus crocea John H. Thomas 1977-4-28 18566 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA121957  Rhododendron macrophyllum N. K. Carlson 1935-7-2 112 San Mateo 5 miles south of Bellvale. 305 Comment
  CAS-BOT-BC389740  Rhododendron occidentale J. Lovelle 1973-7-29 33 San Mateo Pescadero Creek Comment
  CAS-BOT-BC56669  Rhododendron occidentale W. R. Dudley 1908-9-21 s.n. San Mateo Pescadero Cr. (Iversons') Comment
  CAS-BOT-BC56670  Rhododendron occidentale Roxana S. Ferris 1920-5-2 2003 San Mateo near Bonny Doon 457 Comment
  UC311182  Ribes aureum A. D. E. Elmer May, 1903 4514 San Mateo Portola Comment
  CAS-BOT-BC92492  Ribes aureum var. gracillimum Margaret A. Barry 1938-4-21 241 San Mateo By Los Trancos Creek near Coal Mine Ridge. Comment
  POM141969  Ribes californicum A. D. E. Elmer 1903-06 4787 San Mateo Lake San Andreas. Comment
  RSA15313  Ribes californicum Carl B. Wolf 1927-4-3 284 San Mateo Los Troncos Creek, 2 miles back of Stanford University. Comment
  CAS-BOT-BC93002  Ribes californicum var. californicum A. D. E. Elmer 1903-3-1 4683 San Mateo Portola. Comment
  CAS-BOT-BC93008  Ribes californicum var. californicum H. A. Dutton 1900-2-1 s.n. San Mateo Santa Cruz Peninsula. Comment
  JROH2653  Ribes divaricatum var. pubiflorum John Hunter Thomas 1983-4-21 21644 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along causeway. Comment
  CAS-BOT-BC173466  Ribes malvaceum A. D. E. Elmer 1903-3-1 4750 San Mateo Portola Comment
  CAS-BOT-BC173479  Ribes malvaceum Margaret A. Barry 1938-1-23 23 San Mateo North slope on Coal Mine Ridge Comment
  CAS-BOT-BC173478  Ribes malvaceum L. R. Abrams 1904-1-18 58 San Mateo Hills near Stanford Univ. 213 Comment
  CAS-BOT-BC212821  Ribes menziesii W. R. Dudley 1894-7-7 s.n. San Mateo Top Bear Gulch Rd Comment
  CAS-BOT-BC212827  Ribes menziesii A. D. E. Elmer 1903-6-1 4787 San Mateo Lake San Andreas Comment
  CAS-BOT-BC212813  Ribes menziesii W. R. Dudley 1898-4-15 s.n. San Mateo Unspecified Comment
  CAS-BOT-BC212822  Ribes menziesii W. R. Dudley 1894-7-7 s.n. San Mateo Road to La Honda, below first long turn beyond the crest Comment
  CAS-BOT-BC144601  Ribes sanguineum var. glutinosum James McMurphy 1906-3-9 s.n. San Mateo Near King's Mountain House Comment
  CAS-BOT-BC144602  Ribes sanguineum var. glutinosum James McMurphy 1902-4-6 s.n. San Mateo Coal Mine Ridge Comment
  CAS-BOT-BC144607  Ribes sanguineum var. glutinosum David D. Keck 1932-6-1 1786 San Mateo Three miles north of La Honda, Santa Cruz Mtns. 365 Comment
  CAS-BOT-BC144633  Ribes sanguineum var. glutinosum C. F. Baker 1902-1-15 241 San Mateo West side of King's Mt. Comment
  CAS-BOT-BC144645  Ribes sanguineum var. glutinosum Josephine D. Randall 1907-3-9 367 San Mateo Kings Mt. Comment
  CAS-BOT-BC144646  Ribes sanguineum var. glutinosum W. R. Dudley 1904-3-1 62 San Mateo Corte de Madera Creek, Santa Cruz Mts. Comment
  JROH2680  Ribes sanguineum var. glutinosum John Hunter Thomas 1981-4-5 20274 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek. Comment
  JROH2685  Ribes sanguineum var. glutinosum John Hunter Thomas 1985-4-25 23556 San Mateo Jasper Ridge Biological Preserve, Stanford University. Causeway. Comment
  RSA0019100  Ribes sanguineum var. glutinosum D. D. Keck 1932-2-14 1370 San Mateo Near La Honda, Santa Cruz Mountains (3 miles north). 366 Comment
  CAS-BOT-BC363094  Rigiopappus leptocladus Le Roy Abrams 1902-5-4 2401 San Mateo Woodside Comment
  JROH1204  Rigiopappus leptocladus John H. Thomas 1963-5-15 10089 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC429742  Rigiopappus leptocladus L. R. Abrams 1902-5-4 240 San Mateo Woodside Comment
  JROH1202  Rigiopappus leptocladus Peter H. Raven 1963-5-1 18259 San Mateo Jasper Ridge Biological Preserve, Stanford University; north end of Jasper Ridge Comment
  CAS-BOT-BC341023  Robinia pseudoacacia L. R. Abrams 1922-5-3 s.n. San Mateo Sutliff Garden, Stanford University Comment
  CAS-BOT-BC6011  Romanzoffia californica Charles Fuller Baker 1902-4-6 463 San Mateo Crystal Springs Lake Comment
  UC107585  Romanzoffia californica Kellogg 1869-3-16 San Mateo San Bruno Comment
  UC107586  Romanzoffia californica C. F. Baker 1902-4-6 463 San Mateo Crystal Springs Lake; ; Crystal Springs Lake, San Mateo Co. Comment
  CDA9435  Romanzoffia californica D. G. Kelch 2002-5-13 s.n. San Mateo Pilarcitos Canyon, SF watershed. 0 Comment
  SBBG29827  Romanzoffia suksdorfii W. R. Dudley 1909-4-27 San Mateo ponds between Woodside and Crystal Springs Reservoir Comment
  JROH1577  Rorippa curvisiliqua Ann Lambrecht, Toni Corelli 2004-9-15 14 San Mateo Jasper Ridge Biological Preserve, Stanford University. About 10 m E of Sand Hill Rd culvert 104 Comment
  CAS-BOT-BC147628  Rosa californica Phillip Wheeler 1965-6-7 s.n. San Mateo Buckeye Canyon Comment
  CAS-BOT-BC147629  Rosa californica Walter Knight; Irja Knight 1967-6-6 2068 San Mateo Overlooking San Francisco Bay. Point San Bruno Comment
  CAS-BOT-BC146695  Rosa gymnocarpa Delzie Demaree 1933-6-23 10386 San Mateo White House Canyon Comment
  CAS-BOT-BC389723  Rosa gymnocarpa M. K. Wicksten 1971-6-24 127 San Mateo Huddart Pk. Comment
  CAS-BOT-BC152828  Rubus parviflorus Ira L. Wiggins 1939-8-12 9296 A San Mateo along banks of Gazos Cr., about 5 miles inland form coast. Comment
  CAS-BOT-BC152829  Rubus parviflorus W. R. Dudley 1894-12-13 s.n. San Mateo La Honda Road - Santa Cruz Peninsula Comment
  CAS-BOT-BC152867  Rubus parviflorus Phillip C. Wheeler 1965-7-8 s.n. San Mateo Quarry Canyon - San Bruno Mountain Comment
  CAS-BOT-BC156768  Rubus spectabilis Walter Knight; Irja Knight 1964-4-25 1242 San Mateo Half way up Colma Canyon adjacent to creek. San Bruno Mountain Comment
  CAS-BOT-BC156769  Rubus spectabilis Walter Knight; Irja Knight 1965-4-11 s.n. San Mateo From bank of Colma Creek. Colma Canyon Comment
  UC202759  Rubus spectabilis A. D. E. Elmer May 1903 4788 San Mateo Spanishtown [Half Moon Bay] Comment
  CAS-BOT-BC158710  Rubus ulmifolius Margaret Bellue 1945-8-23 s.n. San Mateo Along creek on property in Redwood City. Comment
  CDA3942  Rubus ulmifolius var. inermis M. Leonard 1945-7-6 San Mateo Redwood City. 0 Comment
  CAS-BOT-BC157066  Rubus ursinus Ira L. Wiggins 1925-4-1 1660 San Mateo On Kings Mountain Road three fourths of a mile above Woodside Comment
  CAS-BOT-BC157084  Rubus ursinus C. F. B. 1902-1-15 246 San Mateo West side King's Mountain Comment
  CAS-BOT-BC157090  Rubus ursinus J. Clausen 1948-5-9 2079 San Mateo Tunitas Creek road 121 Comment
  JROH3779  Rubus ursinus John H. Thomas 1977-4-29 18574 San Mateo Jasper Ridge Biological Preserve, Stanford University 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
  RSA15290  Rubus ursinus Carl B. Wolf 1927-4-3 258 San Mateo 1 mile above La Honda. Santa Cruz Mountains. Comment
  UC136500  Rubus ursinus C. F. Baker 1902-1-15 246 San Mateo West side King's Mountain Comment
  JROH3291  Rumex acetosella John H. Thomas 1974-5-19 17384 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC422088  Rumex acetosella E. McClintock; Phillip Wheeler 1965-5-23 s.n. San Mateo San Bruno Mountain. Top of ridge, east of Nike station. Comment
  CAS-BOT-BC422089  Rumex acetosella Elizabeth McClintock; Philip Wheeler 1967-5-15 s.n. San Mateo San Bruno Mountain. East side of mountain, above Harold Ave., Brisbane. Grassy slope above Philip Wheeler's house. Comment
  UCD101053  Rumex acetosella Robert A. Norris 1984-5-9 4728 San Mateo Olivet Memorial Park Throughway, Colma. Comment
  JROH3298  Rumex conglomeratus John H. Thomas 1974-6-27 17452 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near the low flow crossing below Searsville Dam. Comment
  CAS-BOT-BC421575  Rumex crassus Lewis S. Rose 1954-10-4 54134 San Mateo Montara Comment
  CAS-BOT-BC421576  Rumex crassus Saichi Kawahara 1968-6-15 434 San Mateo Pescadero Beach, 150 yards south of mouth of Pescadero Creek, Highway 1 3 Comment
  JROH5595  Rumex crispus John Rawlings 2013-6-13 1189 San Mateo Jasper Ridge Biological Preserve, Stanford University. West end of the shallow depression known as the Semaphore Grass Meadow. 122 Comment
  CAS-BOT-BC433356  Rumex crispus A. D. E. Elmer 1903-6-1 4266 San Mateo San Mateo Comment
  CAS-BOT-BC433368  Rumex crispus J. H. Thomas 1949-4-2 222 A San Mateo Palo Alto Yacht Club. Comment
  JROH3309  Rumex pulcher John Hunter Thomas 1983-5-23 22236 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near shack side and low-flow crossing. Comment
  CAS-BOT-BC433996  Rumex salicifolius W. R. Dudley 1909-10-10 s.n. San Mateo Santa Cruz Mountain Peninsula. E. shore of N. pond, Crystal Springs Res. Comment
  UC569569  Rumex salicifolius var. crassus James Arata Karakawa 1937-10-20 228 San Mateo near Montara Comment
  RSA788846  Rumex salicifolius var. transitorius Peter Rubtzoff 1979-7-26 9299 San Mateo Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  UCD164248  Rumex transitorius Peter Rubtzoff 1979-7-26 9299 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  UC311105  Rupertia physodes A. D. E. Elmer June, 1903 4270 San Mateo Crystal Springs Lake Comment
  SEINET11763715  Ruppia maritima H. L. Mason 1921-1 s.n. San Mateo Pebble Beach, near Pescadero Comment
  CDA43028  Rytidosperma caespitosum T. Hyland 2014-6-27 PDR# MVAP 06098549 San Mateo Ano Nuevo State Park, along entrance road. 0 Comment
  UC1191409  Salicornia europaea Herbert L. Mason and Malcolm A. Nobs 1948-12-11 713 San Mateo Highway 101, near shore of bay, at Whipple Avenue intersection, Redwood City Redwood City Comment
  JEPS59843  Salicornia virginica unknown 1925-5-28 18 San Mateo Tunitas Comment
  UCD110944  Salix exigua Lewis S. Rose 1965-3-8 65003 San Mateo Searsville Lake. 121 Comment
  JROH3852  Salix exigua var. hindsiana John Hunter Thomas 1988-6-2 24495 San Mateo Jasper Ridge Biological Preserve, Stanford University. Beach area, now much overgrown. Comment
  CAS-BOT-BC104050  Salix hindsiana Lewis S. Rose 1965-3-8 65003 San Mateo Searsville Lake 121 Comment
  UC492362  Salix lasiandra subsp. lasiandra Mrs. H. P. Bracelin 1932-7-4 640 San Mateo 4/10 mi e. Pescadero (Butano Creek Rd.) Comment
  UC492364  Salix lasiandra subsp. lasiandra Mrs. H. P. Bracelin 1932-7-4 640 San Mateo 4/10 mi e. Pescadero (Butano Creek Rd.) Comment
  CAS-BOT-BC125380  Salix lasiandra var. lasiandra J. Ed. McClellan; Bonnie McClellan 1976-4-1 s.n. San Mateo Princeton Comment
  CAS-BOT-BC107126  Salix lasiolepis Walter Knight; Irja Knight 1965-2-28 868 San Mateo Colma Canyon - San Bruno Mt. Comment
  JROH3860  Salix lasiolepis W. R. Dudley 1903-4-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Wild Plum Canyon, Searsville Ridge Comment
  POM223617  Salix lasiolepis S. S. Berry 1909-2-27 s.n. San Mateo Near Los Francos Creek. 46 Comment
  POM362648  Salix lasiolepis D. D. Keck 1932-3-6 1392 San Mateo Searsville Lake. Comment
  UC1303068  Salix lasiolepis L. R. Abrams 1915-3-13 5161 San Mateo near junction of San Francisquito and Los Trancos creeks (about 2 mi from Stanford University) Comment
  UC1618081  Salix lasiolepis Donald G. Nelson 1939-6-14 618 San Mateo 3 mi. s of San Francisco Co, line (Skyline Blvd. due e. of Mussel Rock on coast, large permanent Sag Pond) Comment
  UC481898  Salix lasiolepis C. R. Ball and G. W. Hendry 1931-2-22 15 San Mateo in arroyo near San Gregorio Creek (100 m from ocean); San Gregorio Comment
  UCD164611  Salix lasiolepis Peter Rubtzoff 1975-10-24 8433 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction, East Fork Colma Creek Canyon. Comment
  JROH3854  Salix lasiolepis John H. Thomas 1968-3-17 14176 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET5884190 Image available Salix lasiolepis L. S. Rose 1965-1 65004 San Mateo Searsville Lake. Comment
  CAS-BOT-BC108255  Salix lasiolepis var. bigelovii Peter H. Raven 1950-4-30 1981 San Mateo Along a stream in the Montara Mts. ca 1/2 mile N. of Montara 91 Comment
  CAS-BOT-BC128208  Salix lucida W. R. Dudley 1894-3-26 s.n. San Mateo Near San Gregorio - Santa Cruz Peninsula Comment
  RSA155449  Salix lucida subsp. lasiandra L. S. Rose 1961-2-16 61004 San Mateo 3 miles N of La Honda. 335 Comment
  SBBG1241  Salix lucida subsp. lasiandra J. W. Congdon -Aug-1897 San Mateo Pescadero Comment
  SEINET3158751  Salix scouleriana L. S. Rose 1934-2-10 34025 San Mateo Skyline blvd. 4 mi S Kings Mtn. Comment
  CAS-BOT-BC126488  Salix sitchensis Walter Knight; Irja Knight 1965-3-28 s.n. San Mateo Near junction of Colma Creek and April Brook Comment
  CAS-BOT-BC126489  Salix sitchensis A. D. E. Elmer 1903-3-1 4874 San Mateo Portola Comment
  CAS-BOT-BC126514  Salix sitchensis Lewis S. Rose 1964-3-14 64006 San Mateo Princeton 6 Comment
  POM167485  Salix sitchensis A. D. E. Elmer 1903-03 4874 San Mateo Portola. Comment
  UCD164608  Salix sitchensis Peter Rubtzoff 1975-10-11 8426 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction, East Fork Colma Creek Canyon. Comment
  CDA3226  Salsola soda T. C. Fuller 1968-9-25 17640 San Mateo West end of Dumbarton Bridge, Menlo Park. 0 Comment
  RSA681667  Salvia mellifera Annuschka Deb 1989-4-14 101 San Mateo YBN Demonstration Garden Comment
  UCLA70089  Salvia spathacea H. L. Mason 1928-2-22 4160 San Mateo Mt. San Bruno Comment
  RSA120030  Sambucus callicarpa W. R. Dudley 1950-3-16 s.n. San Mateo Near bridge over Pilancitas Creek, on road to Half-Moon Bay Comment
  CAS-BOT-BC246024  Sambucus nigra subsp. caerulea Daniel Cohen 1953-6-3 107 San Mateo Los Trancos Woods Comment
  JROH1675  Sambucus nigra subsp. caerulea John Hunter Thomas 1985-5-22 23669 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1676  Sambucus nigra subsp. caerulea John Hunter Thomas 1989-5-9 24724 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  OBI4270  Sambucus nigra subsp. caerulea Lewis S. Rose 1966-8-15 66084 San Mateo Pulgas Water Temple 91 Comment
  CAS-BOT-BC236456  Sambucus racemosa subsp. racemosa W. R. Dudley 1900-3-16 s.n. San Mateo Ner bridge over Pilarcitos Creek, road to Halfmoon Bay, Santa Cruz Mountain Peninsula Comment
  CAS-BOT-BC235074  Sambucus racemosa var. racemosa W. R. Dudley 1893-3-24 s.n. San Mateo Santa Cruz Mountain Peninsula. Pescadero Creek Comment
  UC579535  Sanicula arctopoides H. S. Yates 1935-2-3 5102 San Mateo 0.5 mi se of Pigeon Point 30 Comment
  SEINET13945107 Image available Sanicula arctopoides C. F. Baker 1902-1 425 San Mateo Crystal Springs Lake. Comment
  SEINET5570625  Sanicula arctopoides H. S. Gentry 1931-1 35 San Mateo Collected 2 miles W of San Bruno. Comment
  SEINET6205025  Sanicula arctopoides L. S. Rose 1965-1 65012 San Mateo San Bruno Mts, N end. Comment
  JROH319  Sanicula bipinnata Ann Lambrecht 2003-4-9 5 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail 11, W edge of trail, around curve SW of Collinsia heterophylla site Comment
  HSC24030  Sanicula crassicaulis Mary Katherine Wicksten 1971-6-17 72 San Mateo Huddart Park, along Chickadee Trail Comment
  JROH328  Sanicula crassicaulis Ynez Henderson 1920-4-12 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Lake Comment
  JROH332  Sanicula crassicaulis John H. Thomas 1967-5-12 12877 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH333  Sanicula crassicaulis John H. Thomas 1971-5-30 15978 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH335  Sanicula crassicaulis John H. Thomas 1973-4-14 16552 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA176825  Sanicula crassicaulis John H. Thomas 1961-5-5 9212 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Along San Francisquito Creek below Searsville Dam. 76 Comment
  RSA191945  Sanicula crassicaulis R. F. Thorne, P. Everett 1963-6-9 32242 San Mateo On top of San Bruno Mountain. 335 Comment
  SEINET10693797 Image available Sanicula laciniata Adolph D. E. Elmer Elmer 4498 San Mateo Comment
  CAS-BOT-BC166668  Satureja douglasii Peter Rubtzoff 1975-10-24 8429 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction; (tributary of East Fork Colma Creek). San Bruno Mountains. Comment
  RSA18449  Satureja douglasii Carl B. Wolf 1927-6-29 558 San Mateo South of Pebble Beach near Pescadero. Comment
  CAS-BOT-BC111604  Schoenoplectus californicus George Thomas Oberlander 1949-7-30 322 San Mateo Marsh, San Andreas Lake Comment
  UC1100796  Scirpus californicus Herbert L. Mason 1946-8-28 13092 San Mateo Pond Highway 5 about 3 mi s Daly City Road; s of Daly City Road, pond Comment
  UC1100787  Scirpus cernuus Herbert L. Mason 1949-7-7 14027 San Mateo mouth of Gazos Creek near ocean (southern San Mateo County); mouth of Gazos Creek Comment
  CAS-BOT-BC111059  Scirpus microcarpus James McMurphy 1909-10-8 s.n San Mateo Gazos Creek Comment
  UC1100816  Scirpus pungens Malcolm A. Nobs, S. Galen Smith 1949-8-25 1558 San Mateo Sharp Park; marshes Comment
  POM292613  Scoliopus bigelovii Lyman Benson 1931-2-28 2611 San Mateo Town: Woodside; Mt. Range: Santa Cruz; River: San Francisquito Cr. 183 Comment
  UC142703  Scoliopus bigelovii Alice Eastwood 1902-2-28 San Mateo Lake Pilarcitos Comment
  JEPS62100  Scoliopus bigelovii Elsa Kraeger 1926-2-21 San Mateo n. La Honda Comment
  CDA7620  Scolymus hispanicus T. C. Fuller 1965-7-8 13755 San Mateo D. McBryde property, 140 Eleanor Drive, Woodside. 0 Comment
  CDA7624  Scolymus hispanicus T. C. Fuller 1965-7-8 13755 San Mateo D. McBryde property, 140 Eleanor Drive, Woodside. 0 Comment
  JEPS23869  Scrophularia californica J. H. Thomas 1949-10-16 1153 San Mateo just n of outlet San Gregorio Creek Comment
  RSA187282  Scrophularia californica John H. Thomas 1965-4-29 10603 San Mateo San Bruno Mountain in northern part of county. 305 Comment
  UCSC007779  Scrophularia californica Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC376418  Scrophulariaceae Greg de Nevers 2001-9-26 12630 San Mateo Palo Alto. Comment
  JROH2888  Scutellaria tuberosa John Hunter Thomas 1986-5-17 24054 San Mateo Jasper Ridge Biological Preserve, Stanford University; creek trail downstream from Rattlesnake Rock Comment
  CAS-BOT-BC59062  Sedum spathulifolium H. L. Mason 1921-7-1 s.n. San Mateo Pescadero Creek Comment
  CAS-BOT-BC59059  Sedum spathulifolium W. R. Dudley 1899-5-14 s.n. San Mateo Side of ravine W of upper San Mateo Creek. Comment
  CAS-BOT-BC59275  Sedum spathulifolium A. D. E. Elmer 1903-6-1 4550 San Mateo Crystal Springs Lake, Toward San Mateo Comment
  RSA0074737  Sedum spathulifolium R. F. Thorne, P. C. Everett 1963-6-9 32245 San Mateo On top of San Bruno Mountain. 335 Comment
  CAS-BOT-BC363382  Senecio aronicoides John H. Thomas 1965-4-29 10610 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC363400  Senecio aronicoides A. A. Heller 1907-4-20 8448 San Mateo Near Lake Merced Comment
  JROH1217  Senecio aronicoides John H. Thomas 1958-5-10 7163 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA0012754  Senecio aronicoides John H. Thomas 1961-5-7 9308 San Mateo San Bruno Mountain, in northern part of county. 305 Comment
  CAS-BOT-BC363387  Senecio aronicoides Walter Knight; Irja Knight 1965-3-21 966 San Mateo San Bruno Mountain. About 1/4 mi. e. of Brisbane power lines near road on ridge Comment
  RSA0012757  Senecio aronicoides Lyman Benson 1930-5-26 2129 -A San Mateo Stanford University, Lake Searsville. 152 Comment
  RSA152140  Senecio glomeratus John H. Thomas 1961-5-7 9275 San Mateo San Bruno Mountain, in northern part of county. 305 Comment
  RSA195550  Senecio mikanioides John H. Thomas 1967-2-9 12399 San Mateo San Bruno. Near intersection of Skyline Blvd. and Berkshire Dr. Comment
  CAS-BOT-BC364238  Senecio sylvaticus Elizabeth McClintock; Carlyn Halde 1963-6-23 s.n. San Mateo San Bruno Mountain. East facing slope below parking lot Comment
  CAS-BOT-BC364239  Senecio sylvaticus Javier Penalosa 1963-3-9 2668 San Mateo San Bruno Mountain. Slopes southeast of 1314 ft. summit 381 Comment
  CAS-BOT-BC364634  Senecio vulgaris Fred Hemphill 1973-3-17 634 San Mateo San Carlos. Chaparral area north of Malabar Rd. and Melendy Dr. 207 Comment
  JEPS37615  Senecio vulgaris W. L. Jepson 1928-10-18 10254 San Mateo w of Colma Comment
  CAS-BOT-BC364640  Senecio vulgaris Elizabeth McClintock 1965-3-14 s.n. San Mateo San Bruno Mountain. South Power Line Ridge Comment
  CAS-BOT-BC80295  Sequoia sempervirens William R. Dudley 1893-2-18 s.n. San Mateo Near La Honda Comment
  UC766822  Sequoia sempervirens R. F. Hoover 1941-2-12 4756 San Mateo above La Honda; La Honda Creek Comment
  UCR168464  Sequoia sempervirens David D. Keck 1932-2-14 1368 San Mateo Coast Range, La Honda Road, east slope of Coast Range above Searsville Lake 305 Comment
  CDA2435  Setaria parviflora I. J. Campbell 1958-8-12 1015 San Mateo Redwood City. 0 Comment
  JROH5462  Setaria viridis John Hunter Thomas 1981-9-24 20748 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5464  Setaria viridis John Rawlings 2005-9-28 1008 San Mateo Jasper Ridge Biological Preserve, Stanford University. Corte Madera Creek. 110 Comment
  UCR101676  Sherardia arvensis George K. Helmkamp, E. A. Helmkamp 1998-5-16 3750 San Mateo Portola Valley, Golden Hills Rd along Los Trancos Creek 107 Comment
  HSC83378  Sherardia arvensis K. L. Koch 1965-5-1 39 San Mateo Alpine Rd., 0.4 mi. from Portola Park turnoff 488 Comment
  SBBG30046  Sidalcea diploscypha L. S. Rose 1948-5-16 San Mateo Emerald Lake, hills W of Redwood City 152 Comment
  UC18913  Sidalcea malviflora subsp. laciniata J. Burtt Davy 1895-4-20 1024 San Mateo Millbrae Comment
  JEPS67241  Sidalcea malviflora subsp. malviflora W. L. Jepson 1921-4-3 9109 San Mateo canyon near Colma (Colma Canyon); n. San Mateo Co., Colma Canyon Comment
  CHSC39826  Sidalcea malviflora subsp. purpurea Maibelle Williams 1929-5-10 San Mateo Moss Beach. Comment
Read comments
Aug 5 2010
  CAS-BOT-BC386850  Silene gallica Javier Penalosa 1963-3-9 2696 San Mateo San Bruno Mountain. Ravine 1/2 mi. east of 1314ft. summit. 304 Comment
  JEPS29396  Silene scouleri subsp. grandis L. R. Heckard 1961-7-16 1265 San Mateo ne transmitting station KQED (summit of San Bruno Mt.); summit San Bruno Mt., ne of transmitting station KQED 335 Comment
  JROH1233  Silybum marianum John H. Thomas 1973-3-12 16493 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC364860  Silybum marianum J. H. Thomas 1949-5-25 562 San Mateo Near western approach to the Dumbarton Bay Bridge Comment
  CDA3853  Sisymbrium officinale W. Plummer 1971-7-9 San Mateo Dick Bulles property, Alpine Creek, Pescadero . 0 Comment
  UCSB16303  Sisyrinchium bellum Schulte, John 1963-4-14 San Mateo Jasper Ridge; 3 mi SW of Stanford Campus; between Clara Valley and main front of Santa Cruz Mountains 152 Comment
  IRVC9060  Sisyrinchium bellum P. W. Rundel 1963-6-11 1129 San Mateo San Fransisco Bay drainage area; Old La Honda Road. Santa Cruz Mountain Range 305 Comment
  RSA125832  Sisyrinchium bellum G. R. Campbell 1956-4-4 2 San Mateo La Honda Rd (from Highway 5) to Woodside, 3 miles from Mt. Home-Portola road 915 Comment
  UCD165023  Sisyrinchium californicum Peter Rubtzoff; Roman Gankin 1975-5-21 7969 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  SEINET3888374  Smilacina sessilifolia Lewis S. Rose 1948-3-31 48035 San Mateo Skyline Blvd., W. of Tanforan.; 0 91 Comment
  JEPS96897  Solanum americanum Dean W. Taylor 1988-3-30 9474 San Mateo San Bruno Mountain, northern slope of southeast ridge of the mountain, near the ridgecrest; right-of-way of eastern-most set of PGandE high-voltage powerlines crossing the mountain 176 Comment
  JROH4179  Solanum americanum John Hunter Thomas 1982-7-2 21054 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near low-flow crossing Comment
  JROH4181  Solanum americanum Carol Zabel 1989-8-11 29 San Mateo Jasper Ridge Biological Preserve, Stanford University. San Francisquito Creek bank about 100 feet upstream from low-flow crossing on Road C. Comment
  UC532098  Solanum douglasii David D. Keck 1934-7-7 2970 San Mateo Ano Nuevo Point, at Ano Nuevo Creek Ano Nuevo Point; , Ano Nuevo Creek Comment
  RSA152273  Solanum furcatum John H. Thomas 1961-5-7 9302 San Mateo San Bruno Mountain, in northern part of county. 305 Comment
  SEINET12315683  Solanum furcatum M. T. Doutt 1931-1 187 San Mateo Ano Nuevo Pt Comment
  CAS-BOT-BC58478  Solanum umbelliferum M. A. Barry 1937-5-15 114 San Mateo Coal Mine Ridge Comment
  JROH4188  Solanum umbelliferum John H. Thomas 1968-3-17 14192 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA127358B  Solanum umbelliferum Glenn A. Gorelick 1967-4-14 s.n. San Mateo San Bruno Mts. overlooking Daly City near San Francisco. Comment
  RSA34004  Solidago canadensis subsp. elongata J. Wendell Howe 1930-5-27 s.n. San Mateo Pigeon Point Road. Comment
  CAS-BOT-BC365537  Solidago elongata J. H. Thomas 1959-8-16 8065 San Mateo About 2 miles SW of Pescadero 60 Comment
  UC1777680  Solidago elongata J. D. Skoss 1948-8-22 121 San Mateo San Vicente Canyon Comment
  CAS-BOT-BC365712  Solidago spathulata Phillip C. Wheeler 1965-8-16 s.n. San Mateo San Bruno Mountain. Lower April Brook Comment
  SD38299  Solidago spathulata Edith A. Purer 1932-7-18 San Mateo Comment
  UC1555381  Solidago spathulata J. A. DeBenedictis 1988-7-13 1543 San Mateo San Bruno Mountain Comment
  JEPS27366  Soliva sessilis Rimo Bacigalupi with J. Roof and L. Heckard 1961-4-24 7626 San Mateo Guadalupe Valley side of the summit San Bruno Mountain (on lateral ridge below and se end of paved ridge-top road just e of KRON television tower and station); Guadalupe Valley side of the summit San Bruno Mountain 304 Comment
  JROH1244  Soliva sessilis John Hunter Thomas 1978-5-12 19202 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
  JROH1239  Soliva sessilis John H. Thomas 1956-4-7 5610 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1242  Soliva sessilis John Hunter Thomas 1978-4-25 19147 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC374493  Sonchus asper John H. Thomas 1963-5-20 10105 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  JROH1259  Sonchus asper subsp. asper John Hunter Thomas 1986-5-15 24043 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC374703  Sonchus oleraceus Josephine D. Randall 1907-4-27 99 San Mateo Santa Cruz Peninsula. Kings Mt. Comment
  UCSB17217  Sonchus oleraceus Schulte, John 1963-4-26 San Mateo Jasper Ridge, 3 miles southwest of Stanford Campus, between Santa Clara Valley and main front of Santa Cruz Mountains 152 Comment
  UCSC007783  Sonchus oleraceus Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC235287  Sorghum bicolor J. H. Thomas 1959-11-19 8513 San Mateo Near Bayshore and University Avenue. East Palo Alto Comment
  RSA23203  Spartina foliosa I. L. Wiggins 1938-11-25 9213 San Mateo Along Dumbarton Bridge approach Comment
  JROH1748  Spergula arvensis John Hunter Thomas 1985-4-10 23512 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  CAS-BOT-BC390203  Spergularia bocconi G. B. Rossbach; R. P. Rossbach 1939-5-12 726 San Mateo San Pedro Point Comment
  RSA0098757  Spergularia macrotheca E. B. Copeland 1903-6-5 3317 San Mateo Montara Point. Comment
  CAS-BOT-BC390546  Spergularia media S. D. Halsey 1908-10-1 s.n. San Mateo Redwood City Comment
  CAS-BOT-BC390704  Spergularia rubra Javier Penalosa 1963-3-30 2752 San Mateo San Bruno Mountain. Crest of ridge SW of Brisbane, 750 ft NW of power lines 304 Comment
  RSA0098733  Spergularia villosa Lyman Benson 1934-7-29 6112 San Mateo Moss Beach. Pcific Ocean watershed. 15 Comment
  CAS-BOT-BC173602  Spiranthes romanzoffiana Peter Rubtzoff 1979-7-26 9294 San Mateo Field redacted by CAS, contact the data manager for more information Comment
  POM63302  Stachys ajugoides A. D. E. Elmer 1903-06 4260 San Mateo Crystal Springs Lake. Comment
  UCD164462  Stachys ajugoides Peter Rubtzoff 1977-6-21 9067 San Mateo San Bruno Mountain. 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction, East Fork Colma Creek Canyon near upper rim. Comment
  CHSC52443  Stachys bullata Sandy Trimble 1987-4-13 19 San Mateo On s side of Hwy. 84, 8.1 mi w of Hwy 1and 7.2 mi e of Hwy 35. 335 Comment
  JEPS82539  Stachys bullata Roger Raiche 1984-5-13 40151 San Mateo San Pedro Creek Montara Mt. 30 Comment
  JROH2905  Stachys bullata John Hunter Thomas 1980-11-27 20177 San Mateo Jasper Ridge Biological Preserve, Stanford University; along causeway Comment
  JROH2906  Stachys bullata John Hunter Thomas 1983-6-29 22699 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2911  Stachys bullata John Hunter Thomas 1990-7-4 24873 San Mateo Jasper Ridge Biological Preserve, Stanford University; along road near picnic area Comment
  RSA116743  Stachys bullata L. R. Abrams 1915-6-7 5245 San Mateo Woodside to Crystal Springs Road. Comment
  CAS-BOT-BC164650  Stachys rigida subsp. quercetorum Peter Rubtzoff 1975-10-11 8425 San Mateo San Bruno Mountain. Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction. Comment
  SEINET10499276 Image available Stachys rigida subsp. quercetorum A. Arthur Heller 1907-5-28 Heller 8577 San Mateo Above Crystal Springs on the Half Moon Bay road Comment
  JROH2894  Stachys rigida var. quercetorum John Hunter Thomas 1978-4-20 19089 San Mateo Jasper Ridge Biological Preserve, Stanford University 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-BC394064  Stellaria media C. F. Baker 1902-4-1 492 San Mateo Foothills near Stanford University; Pacific Coast Comment
  RSA18514  Stephanomeria virgata C. B. Wolf 1927-7-14 606 San Mateo Summit of Kings Mountain Rd. Comment
  JROH5392  Stipa miliacea var. miliacea Ann Lambrecht 2004-7-20 11 San Mateo Jasper Ridge Biological Preserve, Stanford University. Off Trail 13, about 10 m from W end of Leonard's bridge, and about 2 m N of bridge. Comment
  CAS-BOT-BC423013  Stylomecon heterophylla A. D. E. Elmer 1903-4-1 4921 San Mateo Spanishtown Comment
  CAS-BOT-BC271644  Symphoricarpos albus var. laevigatus George Oberlander 1950-3-18 590 San Mateo San Mateo Creek Comment
  POM285012  Symphoricarpos albus var. laevigatus Lyman Benson 1937-7-15 8449 San Mateo Upper San Francisquito Creek, Santa Cruz Mountains; San Francisco Bay watershed. 244 Comment
  RSA3068  Symphoricarpos albus var. laevigatus C. B. Wolf 1931-8-20 2325 San Mateo Los Trancos Creek, 2 miles back of Stanford University, near Schenkel's Camp. 91 Comment
Read comments
Sep 30 2011
  UC75077  Symphoricarpos albus var. laevigatus C. F. Baker 1901-9-5 238 San Mateo w side Kings Mt. Comment
  SJSU14728  Symphoricarpos orbiculatus C. W. Sharsmith 1991-12-14 9230 San Mateo Yerba Buena Nursery, Woodside Comment
  CAS-BOT-BC99087  Symphyotrichum chilense John H. Thomas 1976-10-7 18395 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 30 Comment
  CAS-BOT-BC99092  Symphyotrichum chilense W. R. Dudley 1895-9-21 s.n. San Mateo Menlo Park - Santa Cruz Peninsula Comment
  CAS-BOT-BC99098  Symphyotrichum chilense Helen D. Geis 1901-10-25 s.n. San Mateo Near Spaingstown (Half Moon Bay) Comment
  JEPS40839  Symphyotrichum subspicatum James G. Daly 1934-1-1 320 San Mateo San Gregorio watershed Santa Cruz Mts. Comment
  SJSU11814  Symphyotrichum subspicatum R. R. Regnart 1961-5-7 San Mateo by Purissima Creek Road by Purissima Creek 0.5 mi E of Purissima Comment
  JROH1280  Tanacetum parthenium Monica Bjorkman 1991-11-20 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; low-flow crossing Comment
  UCR256289  Taraxacum officinale Peter Rubtzoff 1976-5-22 8553 San Mateo San Bruno Mountains, 'Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction 213 Comment
  JROH1285  Taraxacum officinale John H. Thomas 1969-4-12 14886 San Mateo Jasper Ridge Biological Preserve, Stanford University; picnic area below dam Comment
  UC1537659  Taraxia ovata Gordon H. True Jr. 1937-3-31 612 San Mateo Salada Beach Road 60 Comment
  JROH2998  Taraxia ovata W. R. Dudley 1894-3-24 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; canada above Searsville Reservoir Comment
  UCSB11176  Taraxia ovata Connelly, Dianne 1962-4-21 San Mateo above main office of Westhorough homes development; 10 miles north of San Francisco on Highway 5 121 Comment
  JROH371  Tauschia hartwegii Carol Zabel 1989-3-4 4 San Mateo Jasper Ridge Biological Preserve, Stanford University; diagonal trail between Trail 14 and Trail 8, by steps Comment
  UC763103  Tauschia kelloggii R. F. Hoover 1941-5-20 5109 San Mateo Redwood City hills Comment
  CAS-BOT-BC447473  Tellima grandiflora Mita C. Daniel 1915-4-10 s.n. San Mateo Kings' Mountain Comment
  UC203041  Tellima grandiflora A. D. E. Elmer Jun 1903 4702 San Mateo Pescadero Comment
  CAS-BOT-BC438268  Tetragonia tetragonoides Walter Knight; Irja Knight 1964-9-2 s.n. San Mateo San Bruno Mountain. Point San Bruno. Comment
  CAS-BOT-BC438269  Tetragonia tetragonoides Robert Robertson 1954-4-14 74 San Mateo N.W. of Palo Alto Yacht Club. 3 Comment
  UCR51661  Thalictrum fendleri R. Ascanio 1988-4-17 s.n. San Mateo E on Gazo Creek Road off Hwy 1, c. 2 mi. north of Ano Nuevo State Reserve 85 Comment
  CAS-BOT-BC66657  Thysanocarpus curvipes John H. Thomas 1967-4-28 12719 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-BC66655  Thysanocarpus curvipes H. J. Dengler 1972-4-30 s.n. San Mateo Unspecified. Comment
  CAS-BOT-BC66681  Thysanocarpus curvipes Walter Knight; Irja Knight 1967-5-1 s.n. San Mateo San Bruno Mountain. Owl's Canyon. Comment
  JROH5697  Thysanocarpus curvipes subsp. elegans John Rawlings 2015-3-31 1418 San Mateo Jasper Ridge Biological Preserve, Stanford University. Northwest side of small drainage upstream from the footbridge on Trail 11. 134 Comment
  SD27906  Tiarella trifoliata var. unifoliata L. A. Waitzinger 1927-8-14 San Mateo Islam Camp, near La Honda, Santa Cruz Mts. Comment
  JROH382  Torilis nodosa John H. Thomas 1977-5-14 18611 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH383  Torilis nodosa John Hunter Thomas 1980-5-13 19966 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH385  Torilis nodosa John Hunter Thomas 1981-4-30 20521 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC172904  Toxicodendron diversilobum C. F. Leitholt 1901-3-16 s.n. San Mateo Los Trancos Creek, near Stanford University Comment
  JROH186  Toxicodendron diversilobum John H. Thomas 1974-10-26 17625 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CHSC57068  Tragopogon porrifolius Steven Triano 1988-5-24 190 San Mateo On the sw corner of the jct. of Portola Road and Old La Honda Road, ca 3.2 mi s of Woodside. 115 Comment
  CAS-BOT-BC389711  Tragopogon porrifolius L. Sigal 1969-5-1 280 San Mateo Campus of San Mateo Comment
  RSA460866  Trientalis latifolia E. S. Spalding 1924-6-28 s.n. San Mateo San Mateo, La Honda Comment
  JEPS128163  Trifolium angustifolium Eric Wrubel 2012-7-1 NPS 43 San Mateo Golden Gate National Recreation Area. Rancho Corral de Tierra, Spine Trail. Comment
  JROH2238  Trifolium barbigerum John H. Thomas 1961-4-29 9176 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD147019  Trifolium barbigerum Robert E. Preston 2011-6-16 2864 San Mateo Santa Cruz Mtns, Oil Creek watershed, 1.7 mi NW of Waterman Gap. 298 Comment
  UCSC003389  Trifolium barbigerum var. andrewsii Randall Morgan 2001-5-9 3733 San Mateo Bean Hollow State Beach, San Mateo County Comment
  JROH2251  Trifolium bifidum var. bifidum John H. Thomas 1958-5-10 7144 A San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  OBI12706  Trifolium bifidum var. decipiens Lewis S. Rose 1966-5-2 66035 San Mateo Emerald Lake, W of Redwood City 91 Comment
  POM20507  Trifolium bifidum var. decipiens A. D. E. Elmer 4714 San Mateo Portola. Comment
  RSA349487  Trifolium bifidum var. decipiens D. D. Keck 1932-6-1 1790 San Mateo Above Woodside on the La Honda road, east slope of the Santa Cruz Mountains 305 Comment
  UCR123140  Trifolium campestre George K. Helmkamp, E. A. Helmkamp 2001-6-2 6766 San Mateo Central Coast, Pillar Point Harbor, about 4 miles north of Half Moon Bay 6 Comment
  JROH2270  Trifolium depauperatum var. truncatum John H. Thomas 1966-4-6 11550 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CDA4289  Trifolium dubium T. C. Fuller 1967-6-13 15945 San Mateo South side of road to Half Moon Bay, 0.7 mile west of Skyline Boulevard, Crystal Springs. 0 Comment
  SJSU7974  Trifolium fucatum S. H. Anderson 1962-4-15 San Mateo Burlingame Hills Comment
  UCD78049  Trifolium glomeratum Robert E. Preston 2004-6-10 2253 San Mateo Ca. 8 miles NW of Boulder Creek, in Pescadero Creek watershed. 162 Comment
  SBBG39488  Trifolium hirtum L. S. Rose 1970-4-23 San Mateo Skyline Blvd, W of San Mateo 121 Comment
  UCD111197  Trifolium hirtum John Thomas Howell 1966-5-8 41530 San Mateo At junction of Millbrae Ave. and Bayshore Freeway, Millbrae. Comment
  CAS-BOT-BC5350  Trifolium macraei Adolph Daniel Edward Elmer 1903-5-1 4812 San Mateo San Pedro Comment
  POM20403  Trifolium microcephalum A. D. E. Elmer 1903-04 4856 San Mateo Portola. Comment
  SJSU15437  Trifolium microcephalum Toni Corelli 2010-5-13 606 San Mateo Pedro Point Headlands, Pacifica, CA, along South Ridge Trail 180 Comment
  UCSC006035  Trifolium microdon Randall Morgan 1996-5-24 2965 San Mateo Pacifica, San Pedro Mtn. Comment
  UCSC006343  Trifolium obtusiflorum Randall Morgan 1995-6-22 2793 San Mateo Ridge W of Waterman Creek Comment
  UCSC010593  Trifolium suffocatum Neal Kramer 2016-4-9 2169 a San Mateo Pescadero State Beach Parking Area 13 Comment
  UC2048924  Trifolium suffocatum Neal Kramer 2016-4-17 2169 b San Mateo Bean Hollow State Beach trail north of parking area. Comment
  JROH2379  Trifolium variegatum John H. Thomas 1968-3-31 14260 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
  JROH2388  Trifolium variegatum John Hunter Thomas 1985-4-11 23523 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET4206967  Trifolium variegatum Lewis S. Rose 1953-4-5 53011 San Mateo Redwood City, CA, along Bayshore Highway.; 0 3 Comment
  RSA95537  Trifolium variegatum var. melananthum L. S. Rose 1953-4-5 53011 San Mateo Redwood City, along Bayshore Highway. 3 Comment
  JROH5703  Trifolium variegatum var. variegatum John Rawlings 2015-3-15 1356 San Mateo Jasper Ridge Biological Preserve, Stanford University; grassy drainage on ridge-top serpentine prairie. 188 Comment
  UC165542  Trifolium variegatum var. variegatum J. Burtt Davy 1893-6-22 838 San Mateo Lake Pilarcitos Comment
  JROH2392  Trifolium willdenovii G. C. Kimber & Lucile Roush 1918-5-2 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2394  Trifolium willdenovii John H. Thomas 1955-5-6 5008 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1130146  Trifolium willdenovii H. S. Yates 1935-5-8 5202 San Mateo 2 mi n Langley Hill; Santa Cruz Quad. 579 Comment
  SD39589  Trifolium wormskioldii Edith A. Purer 1933-7-27 5385 San Mateo 2.0 miles south of Pigeon Point. Comment
  RSA51346  Trifolium wormskioldii Peter H. Raven 1950-4-30 s.n. San Mateo Up a road about 1/2 mile N of Montara. 30 Comment
  UCSC007777  Trifolium wormskioldii Becky Hendricks, Chris Lay 2012-6-22 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC521066  Trillium chloropetalum var. giganteum Elizabeth McClintock 1965-4-11 s.n. San Mateo San Bruno Mountain: Mouth of Colma Canyon near Indian Head Rock Comment
  CAS-BOT-BC521208  Trillium chloropetalum var. giganteum Ira L. Wiggins 1928-4-14 2917 San Mateo Alpine Creek Road Comment
  CAS-BOT-BC521209  Trillium chloropetalum var. giganteum James McMurphy 1902-3-22 s.n. San Mateo Above Portola Comment
  CAS-BOT-BC133429  Trillium ovatum L. R. Abrams 1898-3-5 s.n. San Mateo Kings Mt. Comment
  CAS-BOT-BC133441  Trillium ovatum A. D. E. Elmer 1903-4-1 4752 San Mateo Portola Comment
  CAS-BOT-BC133442  Trillium ovatum Eric Walther 1919-6-9 s.n. San Mateo Woodside Comment
  CAS-BOT-BC133447  Trillium ovatum Elmer I. Applegate 1895-3-9 43 San Mateo Near Woodside Comment
  CAS-BOT-BC133428  Trillium ovatum W. R. Dudley 1896-3-26 s.n. San Mateo Purisima Creek above King's Comment
  UC1303092  Triphysaria floribunda Roxana S. Ferris and I. L. Wiggins 1932-4-7 8038 A San Mateo hills above Colma Comment
  UC75150  Triphysaria floribunda C. F. Baker 1902-3-22 346 San Mateo South San Francisco Comment
  JEPS3988  Triphysaria pusilla Dr. L. M. Newlon 1919-4-14 4 San Mateo Moss Beach 22 Comment
  JROH5911  Triteleia hyacinthina J. Nordby 1982-4-25 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Serpentine grassland along roadside, near oak woodlands Comment
  CAS-BOT-BC523097  Triteleia ixioides subsp. ixioides Fred Hemphill 1973-5-14 829 San Mateo San Carlos, area north of Malabar Road and Melendy Drive 207 Comment
  HSC23983  Triteleia ixioides subsp. ixioides Mary Katherine Wicksten 1971-6-17 4 San Mateo Huddart Park, grassy hill above Oak Area Comment
  RSA18293  Triteleia ixioides subsp. ixioides Carl B. Wolf 1927-6-21 424 San Mateo East slope of Kings Mt. Comment
  UCR156579  Triteleia ixioides var. ixioides P. W. Rundel 1963-7-7 1136 San Mateo San Francisco Bay watershed, Santa Cruz Mountain Range, South Spring Rd., Woodside 500 Comment
  UC1133973  Triteleia laxa W. W. Akey 1935-5-25 26 San Mateo near Bolsa Point; Santa Cruz quad 30 Comment
  IRVC9054  Triteleia laxa P. W. Rundel 1963-6-11 1118 San Mateo San Fransisco Bay drainage area; Old La Honda Road. Santa Cruz Mountain Range 305 Comment
  SEINET12044747  Triteleia laxa G. C. Kimber, Roush, L. 1918-1 s.n. San Mateo Jasper Ridge, Santa Cruz Mountain Peninsula Comment
  CAS-BOT-BC74058  Turritis glabra Elizabeth McClintock; David Schooly; Kim Marcus 1975-4-13 s.n. San Mateo San Bruno Mountain. Above Hillside Boulevard. South San Francisco. Comment
  CAS-BOT-BC212676  Ulex europaeus Javier Penalosa 1963-2-23 2645 San Mateo San Bruno Mtn. Ravine south of Crocker Ave. 213 Comment
  RSA625696  Ulex europaeus Don Pendleton 1993-11-20 s.n. San Mateo Daly City at 222 Hickey Boulevard Comment
  SD232694  Ulex europaeus Don Pendleton 1993-11-20 San Mateo Daly City, at 333 Hickey Blvd. Comment
  UCSB54155  Ulex europaeus Brownell, Kathleen 1979-3-27 San Mateo 9 mi. S of Butano State Park turnoff 21 Comment
  CAS-BOT-BC91225  Umbellularia californica Elizabeth McClintock 1966-9-29 s.n. San Mateo San Bruno Mountains. In a canyon adjacent to northwestern edge of Brisbane. Comment
  CAS-BOT-BC91227  Umbellularia californica Ned Cahill 1974-4-30 234 San Mateo Near the intersection of Canada and Edgewater roads, about 3 miles westward from Redwood City. Comment
  JROH136  Umbellularia californica John H. Thomas 1959-8-22 8081 San Mateo Jasper Ridge Biological Preserve, Stanford University 182 Comment
  JROH141  Umbellularia californica John Hunter Thomas 1981-2-15 20216 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA181986  Umbellularia californica W. L. Jepson 1922-3-19 9541 San Mateo Millbrae 183 Comment
  RSA623612  Umbellularia californica C. B. Wolf 1928-2-11 1471 San Mateo East base of Kings Mountain Road.. . Comment
  JROH1297  Uropappus lindleyi John Hunter Thomas 1992-5-5 25209 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC404027  Urtica dioica subsp. holosericea Walter Knight; Irja Knight 1964-9-2 725 San Mateo San Bruno Mountain. In Buckeye Canyon Comment
  CAS-BOT-BC412535  Urtica urens John H. Thomas 1967-2-9 12405 San Mateo Half Moon Bay. Near Mills St. and Purissima St. Comment
  CAS-BOT-BC199363  Vaccinium ovatum W. R. Dudley 1898-3-5 s.n. San Mateo Kings Mountain Comment
  HSC98190  Vaccinium ovatum L. S. Rose 1969-3-27 69007 San Mateo Kings Mountain Road, 4 mi. W of Woodside 305 Comment
  RSA624004  Vaccinium ovatum James I. McMurphy 1906-5-20 79 San Mateo Kings Mountain, Santa Cruz Mts. 457 Comment
  CAS-BOT-BC199465  Vaccinium parvifolium A. D. E. Elmer 1903-5-1 4924 San Mateo Butano Creek Comment
  CAS-BOT-BC199466  Vaccinium parvifolium W. R. Dudley 1903-5-2 s.n. San Mateo Iversons, Upper Pescadero Creek Comment
  JEPS100467  Vaccinium parvifolium Dean W. Taylor 1988-4-29 9586 San Mateo San Bruno Mountain, northern slope of mountain 0.3 miles N22d W of summit, 371 Comment
  POM131821  Vaccinium parvifolium E. B. Copeland 1903-5-9 3249 San Mateo Big Basin of Pescadero Creek. Comment
  CAS-BOT-BC76144  Vancouveria planipetala A. D. E. Elmer 1903-5-1 4922 San Mateo Iverson's Place. Pescadero Creek. Comment
  CAS-BOT-BC76146  Vancouveria planipetala W. R. Dudley 1901-12-31 s.n. San Mateo Santa Cruz Mountain Peninsula. Above Gazos Creek. Comment
  POM177507  Vancouveria planipetala W. R. Dudley 1895-6-6 s.n. San Mateo By road in Redwoods this side of Iverson s near Peter s Creek. Comment
  JROH4147  Verbascum thapsus John Hunter Thomas 1981-9-24 20746 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC5096  Verbena prostrata L. R. Abrams 1914-6-2 5109 San Mateo unspecified Comment
  UC112848  Veronica americana Katharine Brandegee July 1908 San Mateo near San Pedro Comment
  CDA19090  Veronica americana J. Beall 2001-4-24 PDR 064439 San Mateo Belmont Creek at Old Country Rd., Belmont. 0 Comment
  UC673611  Vicia americana var. americana Herbert L. Mason 1927-4-23 3675 a San Mateo summit of road from La Honda to Pescadero Creek Comment
  JROH2435  Vicia sativa subsp. nigra John H. Thomas 1975-4-19 17798 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
  JROH2450  Vicia sativa subsp. sativa John Hunter Thomas 1983-4-3 21311 San Mateo Jasper Ridge Biological Preserve, Stanford University; old beach area Comment
  UCSB8438  Vicia sativa subsp. sativa Haller, John 1950-4-24 San Mateo Near Atherton, 3 miles northwest of Stanford University 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
  CAS-BOT-BC264049  Viola adunca Robert Robertson 1954-5-1 121 San Mateo At Pebble Beach 9 Comment
  RSA130984  Viola glabella M. N. paulson 1915-4-10 s.n. San Mateo Kings Mountain. Comment
  UC1300826  Viola glabella Helen K. Sharsmith 1963-3-23 5250 San Mateo Alpine Creek Canyon; San Francisco Bay Region, Santa Cruz Mountains 243 Comment
  RSA10996  Viola glabella Carl B. Wolf 1928-3-14 1533 San Mateo La Honda Grade, Santa Cruz Mountains. Comment
  JROH4284  Viola ocellata W. R. Dudley 1893-4-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA130815  Viola ocellata M. N. paulson 1917-04 s.n. San Mateo Kings Mt Road. Comment
  RSA130977  Viola ocellata Lucile Roush 1918-3-31 s.n. San Mateo Santa Cruz Peninsula; Sierra Morena. Comment
  HSC21838  Viola pedunculata L. S. Rose 1965-3-25 65009 San Mateo San Bruno Mtns., N end 122 Comment
  UC499241  Viola pedunculata Ivar Tidestrom 1894-3-29 San Mateo