Search Results — 2000 specimen records retrieved (1331 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
  CAS-BOT-BC233752  Abronia umbellata C. F. Baker 1902-10-1 1742 San Mateo Pillar Point Comment
  RSA0025943  Abronia umbellata C. F. Baker 1902-10-1 1742 San Mateo Pillar Point. Comment
  CAS-BOT-BC177046  Acacia dealbata Walter Knight; Irja Knight; Elizabeth McClintock 1963-1-12 s.n. San Mateo Crocker Ave. Comment
  JEPS15238  Acaena pinnatifida var. californica Rimo Bacigalupi with G. T. Robbins, L. T. Dempster and S. Galen Smith 1956-5-15 5644 San Mateo near summit of first range of hills due w. San Bruno (ca. 1/4 mi. e. of Skyline Blvd.) 137 Comment
  CAS-BOT-BC451128  Acaena pinnatifida var. californica Elizabeth McClintock; Walter Knight; Irja Knight; Baki Kasapligil 1967-7-18 s.n. San Mateo Near old quarry on area adjacent to the mouth of Colma Canyon; San Bruno Mountains Comment
  CAS-BOT-BC451129  Acaena pinnatifida var. californica Elizabeth McClintock; Philip Wheeler 1967-5-14 s.n. San Mateo East side of Mountain, above Harold Ave., Brisbane; San Bruno Mountains Comment
  CAS-BOT-BC219607  Acanthomintha duttonii A. D. E. Elmer 1903-5-1 4538 San Mateo Crystal Springs Lake Comment
  JEPS62924  Acanthomintha duttonii Harry A. Dutton 1915-5-26 San Mateo Menlo (W of, near Menlo Golf Club), Vicinity of San Francisco Bay Region. Comment
  JEPS81238  Acanthomintha duttonii Susan C. Sommers 1982-5-20 San Mateo Edgewood Park Comment
  RSA0076540  Acanthomintha obovata subsp. duttonii Hester R. Davis 1920-6-2 182 San Mateo Back of Redwood City. Comment
  JROH155  Acer macrophyllum John H. Thomas 1971-4-25 15786 San Mateo Jasper Ridge Biological Preserve, Stanford University 92 Comment
  RSA70706  Acer macrophyllum L. S. Rose 1950-4-1 50047 San Mateo San Mateo Canyon Comment
  JROH171  Acer negundo John Hunter Thomas 1982-11-6 21217 San Mateo Jasper Ridge Biological Preserve, Stanford University. On causeway 106 Comment
  UCD117104  Acer negundo R. E. Dengler 1960-4-20 17 San Mateo near Corte de Madera Creek, 0.5 mile from its drainage into Searseville Lake, Jasper Ridge, Stanford Biological Reserve. 375 Comment
  CAS-BOT-BC336919  Acer negundo var. californicum C. F. Baker 1902-4-6 472 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC21552  Achillea millefolium John H. Thomas 1955-4-6 4835 San Mateo San Bruno Mountain just north of South San Francisco 91 Comment
  CAS-BOT-BC21600  Achillea millefolium Elizabeth McClintock 1963-6-9 s.n. San Mateo San Bruno Mountain 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
  JROH454  Achillea millefolium John Hunter Thomas 1989-5-9 24703 San Mateo Jasper Ridge Biological Preserve, Stanford University 180 Comment
  UCD128300  Achillea millefolium Leslie Fenster 1964-3-22 15 San Mateo near Crystal Spring Lake. 152 Comment
  UCSB18197  Achillea millefolium Muirhead, M. 1964-4-17 San Mateo Crocker Estate, Hillsborough 76 Comment
  JROH455  Achyrachaena mollis Arthur Spiegler 1952-5-10 70 San Mateo Jasper Ridge Biological Preserve, Stanford University; north of Searsville Lake Comment
  JROH471  Achyrachaena mollis John Hunter Thomas 1982-5-18 20939 San Mateo Jasper Ridge Biological Preserve, Stanford University; old racing oval Comment
  JROH472  Achyrachaena mollis John Hunter Thomas 1983-4-21 21641 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA176744  Achyrachaena mollis John H. Thomas 1963-5-12 10079 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto Comment
  UCSB17226  Achyrachaena mollis 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 Mounatins 152 Comment
  SBBG34038  Acmispon americanus L. S. Rose 1964-9-5 64071 San Mateo Emerald Lake, W of Redwood City 243 Comment
  JROH2057  Acmispon americanus var. americanus D. E. Breedlove 1971-5-31 19343 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  CAS-BOT-BC389697  Acmispon glaber Mary K. Wicksten 1975-6-19 129 San Mateo Mt. Ellen Trail Comment
  JROH2068  Acmispon glaber var. glaber G. H. Mallory 1919-7-15 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2075  Acmispon glaber var. glaber John Hunter Thomas 1983-6-29 22703 San Mateo Jasper Ridge Biological Preserve, Stanford University; top of Rattlesnake Rock 112 Comment
  JROH2110  Acmispon strigosus John H. Thomas 1971-4-24 15774 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2083  Acmispon wrangelianus John H. Thomas 1955-5-6 4991 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2099  Acmispon wrangelianus John H. Thomas 1974-4-12 17145 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC139955  Adenostoma fasciculatum John H. Thomas 1971-5-2 15864 San Mateo Near intersection of Canada and Edgewater {Edgewood] roads, about 4 miles SW of center of Redwood City 304 Comment
  UC859034  Adenostoma fasciculatum Lewis S. Rose 1932-5-22 32259 San Mateo Belmont Comment
  UCR139358  Adenostoma fasciculatum David D. Keck 1932-5-25 1781 San Mateo San Francisco Bay Region, hills two miles west of Belmont 168 Comment
  RSA18438  Adenostoma fasciculatum var. fasciculatum Carl B. Wolf 1927-6-29 570 San Mateo Near La Honda, Santa Cruz Mts. Comment
  RSA120509  Adiantum aleuticum S. S. Tillett, I. Sternback 1956-6-25 547 San Mateo Along Patterson Creek, on Middleton property just above entrance to Portola State beach. 366 Comment
  CAS-BOT-BC65670  Adiantum jordanii Ira L. Wiggins 1928-4-14 2919 San Mateo Alpine Creek Road Comment
  JROH89  Adiantum jordanii John H. Thomas 1968-4-13 14290 B San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  CAS-BOT-BC65674  Adiantum jordanii Walter Knight; Irja Knight 1965-4-25 1049 San Mateo in Owl's Canyon 182 Comment
  UCSB18581  Adiantum jordanii Muirhead, M. 1964-4-17 San Mateo Crocker Estate, Hillsborough 91 Comment
  JROH2708  Aesculus californica John H. Thomas 1971-5-30 15972 San Mateo Jasper Ridge Biological Preserve, Stanford University 120 Comment
  CAS-BOT-BC29526  Agoseris apargioides W. R. Dudley 1896-11-15 s.n. San Mateo Near shore, Spanishtown Comment
  UC206220  Agoseris apargioides var. apargioides Katharine Brandegee 1917-6-15 San Mateo Moss Beach Moss Beach Comment
  UC29397  Agoseris apargioides var. apargioides F. P. McLean 1873-6-1 San Mateo Searsville Comment
Read comments
Oct 8 2006
  CAS-BOT-BC22976  Agoseris grandiflora var. grandiflora David D. Keck 1932-5-6 1460 San Mateo Belmont Comment
  CAS-BOT-BC22977  Agoseris grandiflora var. grandiflora Ned Cahill 1974-5-30 326 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  CAS-BOT-BC23022  Agoseris grandiflora var. grandiflora Walter Knight; Irja Knight 1965-5-15 s.n. San Mateo Pig Ranch Ravine Comment
  CAS-BOT-BC23017  Agoseris grandiflora var. grandiflora A. G. Vestal 1926-5-29 s.n. San Mateo San Bruno Mt north end Comment
  CAS-BOT-BC15250  Agoseris hirsuta A. D. E. Elmer 1903-4-1 4930 San Mateo Cemeteries Comment
  POM52819  Agoseris hirsuta A. D. E. Elmer 1903-04 s.n. San Mateo Cemeteries Comment
  POM226850  Agrostis avenacea Henry E. Wreser 1932-6-4 s.n. San Mateo Black Mountain Road. Hillsborough Hills. Near Burlingane. Comment
  CAS-BOT-BC127481  Agrostis capillaris John Thomas Howell 1975-9-25 51509 San Mateo San Bruno Mountain. Comment
  JROH4778  Agrostis capillaris John Rawlings 2008-6-25 1044 San Mateo Jasper Ridge Biological Preserve, Stanford University; seven yards from paved road in middle of the blocked-off dirt path leading to Causeway Bridge 105 Comment
  SJSU15804  Agrostis densiflora Toni Corelli 2015-5-3 1192 San Mateo Northern edge of Fitzgerald Marine Reserve, Moss Beach also know as Vallemar Bluff 14 Comment
  UCD37958  Agrostis densiflora Beecher Crampton 1962-6-11 6489 San Mateo San Mateo County, northern city limits of Pacifica, along State Highway 1, just southwest of its junction with Skyline Boulevard. Comment
  JROH4781  Agrostis exarata W. R. Dudley 1903-1-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Lake Comment
  CAS-BOT-BC139463  Agrostis hallii Phillip C. Wheeler 1965-6-19 s.n. San Mateo San Bruno Mountains. Canyon east of quarry. Comment
  JROH4796  Agrostis microphylla A. G. Vestal 1923-5-7 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4789  Agrostis pallens John H. Thomas 1971-5-30 15964 San Mateo Jasper Ridge Biological Preserve, Stanford University 128 Comment
  JROH4800  Agrostis pallens John Rawlings 2010-6-23 0989 San Mateo Jasper Ridge Biological Preserve, Stanford University; between old well and Escobar Gate on Trail 2 extension 121 Comment
  SJSU15849  Agrostis pallens John Rawlings, Ken Hickman 2015-6-8 1574 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
  JROH4806  Agrostis stolonifera John Rawlings 2008-7-23 1046 San Mateo Jasper Ridge Biological Preserve, Stanford University. Dry creek bed of San Francisquito Creek, about 200 yards downstream from the Low Flow Crossing. 95 Comment
  CDA38392  Agrostis viridis Wm. Davis 1957-8-16 s.n. San Mateo Nursery; Millbrae. 0 Comment
  JROH4827  Aira caryophyllea John H. Thomas 1976-4-30 18104 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam 118 Comment
  RSA591524  Aira caryophyllea D. D. Keck 1932-3-6 1480 San Mateo Open hillside just west of Millbrae Highlands. 15 Comment
  CAS-BOT-BC138242  Aira caryophyllea var. caryophyllea John H. Thomas 1955-4-6 4845 San Mateo San Bruno Mountain just north of South San Francisco. 91 Comment
  CAS-BOT-BC138249  Aira caryophyllea var. caryophyllea John H. Thomas 1958-3-19 7050 San Mateo East facing slope of San Bruno Mountain, just north of South San Francisco. 91 Comment
  JROH4302  Alisma triviale Toni Corelli 2005-8-10 301 San Mateo Jasper Ridge Biological Preserve, Stanford University; offshoot of main creek in wet area along new bridge near beginning of trail 12 109 Comment
  JROH4572  Allium John Hunter Thomas 1985-5-22 23682 San Mateo Jasper Ridge Biological Preserve, Stanford University. San Francisquito Cr. Comment
  CAS-BOT-BC447499  Allium amplectens Le Roy Abrams 1902-5-8 2431 San Mateo Standford University Comment
  CAS-BOT-BC467291  Allium dichlamydeum Walter Knight; Irja Knight 1964-5-30 603 San Mateo North facing slope, Colma Canyon Comment
  CAS-BOT-BC467295  Allium dichlamydeum J. Ed. McClellan; Bonnie McClellan 1968-6-1 s.n. San Mateo Ocean bluff at Pigeon Point Comment
  JROH4548  Allium falcifolium H. L. Mason 1921-5-13 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA40253  Allium falcifolium L. S. Rose 1948-5-16 48111 San Mateo Emerald Lake, west of Redwood City. 152 Comment
  RSA52685  Allium falcifolium I. L. Wiggins 1949-4-23 12049 San Mateo Near Emerald Lakes, west of Redwood City. Comment
  SD39066  Allium falcifolium Marie Cummings 1933-4-14 18 San Mateo Spring Valley. Comment
  CAS-BOT-BC132031  Allium peninsulare var. franciscanum L. R. Abrams 1920-6-2 7502 San Mateo Back of Redwood City Comment
  CAS-BOT-BC132035  Allium peninsulare var. franciscanum Alice Eastwood 1912-6-10 s.n. San Mateo Crystal Springs Comment
  POM196557  Allium peninsulare var. franciscanum H. L. Mason 1921-5-13 s.n. San Mateo Jasper Ridge near Sand Hill Caves Comment
  CAS-BOT-BC474306  Allium unifolium L. R. Abrams 1922-5-25 s.n. San Mateo Emerald Lake, back of Redwood City Comment
  CAS-BOT-BC170157  Alnus rhombifolia W. R. Dudley 1906-10-3 s.n. San Mateo Border of Pescadero Creek, opposite Svensons old place. Santa Cruz Mountain Peninsula 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
  CAS-BOT-BC137920  Alopecurus saccatus David D. Keck 1932-5-6 1472 San Mateo Burlingame. North city limits. Comment
  UCR143475  Alopecurus saccatus David D. Keck 1932-5-6 1472 San Mateo Burlingame; northern city limits Comment
  CAS-BOT-BC137921  Alopecurus saccatus W. R. Dudley 1910-5-8 s.n. San Mateo Santa Cruz Mountain Peninsula. New Grade road above Fritz Patricks. Comment
  RSA121069A  Amaranthus deflexus J. T. Howell 1956-6-20 31631 San Mateo Along El Camino Real, San Carlos Comment
  POM223661  Ambrosia chamissonis L. S. Rose 1935-9-29 35653 San Mateo Granada 3 Comment
  POM139596  Amelanchier pallida L. R. Abrams 1916-4-22 5577 San Mateo Pilarcitos Canyon 3 Comment
  CAS-BOT-BC136831  Amelanchier utahensis Elizabeth McClintock 1963-6-9 s.n. San Mateo San Bruno Mountain Comment
  CAS-BOT-BC136835  Amelanchier utahensis L. R. Abrams 1916-4-22 5577 San Mateo Pilarcitos [Canon] Canyon 3 Comment
  RSA385132  Ammophila arenaria Edith A. Purer 1933-7-27 18181 San Mateo 2 mi. S of Pigeon Pt. Comment
  SEINET11674266  Ammophila arenaria E. A. Purer 1933-1 5390 San Mateo 2 mi S of Pigeon Point Comment
  CAS-BOT-BC222456  Amsinckia lunaris Gene B. Newcomb 1953-5-20 116 San Mateo Road west of San Mateo City to Skyline Blvd., 1.7 miles below junction to Skyline opposite gravel pit, (Hillsborough) Comment
  RSA0089968  Amsinckia retrorsa Arthur L. Cohen 1935-4-21 622 San Mateo Jasper Ridge, Stanford University. Santa Cruz Mtn Range, San Francisco Bay Watershed. 152 Comment
  POM286828  Anagallis arvensis Lyman Benson 1935-6-6 6671 San Mateo Menlo Park. 46 Comment
  HSC59829  Anagallis arvensis Clark L. Miller 1978-6-15 264 San Mateo 6 mi. S of Half Moon Bay, off Hwy. 1 on Verde Rd. 61 Comment
  JROH3370  Anagallis minima John H. Thomas 1961-4-29 9180 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3373  Anagallis minima John H. Thomas 1973-4-14 16563 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC45194  Anaphalis margaritacea Saichi Kawahara 1968-7-29 459 San Mateo Old Stage Road, south bank of Pomponio Creek 36 Comment
  POM148966  Anemone grayi A. D. E. Elmer 1903-04 4844 San Mateo Kings Mtn. Comment
  UC118834  Anemone oregana C. F. Baker 1902-3-18 323 San Mateo King's Mtn 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
  CAS-BOT-BC273176  Anisocarpus madioides L. S. Rose 1941-7-2 41287 San Mateo Kings Mountain 540 Comment
  UC1080539  Anisocarpus madioides S. S. Tillett and I. Sternback 1956-6-24 529 San Mateo n of (behind) Portola Camp Store (just outside Portola State Park, Middleton property) 396 Comment
  UC830895  Anisocarpus madioides Lewis S. Rose 1941-7-2 41287 San Mateo Kings Mountain 548 Comment
  UCD128894  Anisocarpus madioides W. A. Harvey; J. M. Tucker 1948-6-29 1704 San Mateo beside road to Portola State Park, just west of junction with Highway 5 (Skyline Boulevard). Comment
  JEPS13142  Anthemis cotula W. L. Jepson 1928-7-11 12939 San Mateo Redwood City 3 Comment
  CAS-BOT-BC102288  Anthemis cotula Phillip Wheeler 1965-6-8 s.n. San Mateo Old County Road-Brisbane Comment
  CAS-BOT-BC102289  Anthemis cotula Elizabeth McClintock; Carlyn Halde; Walter Knight 1963-6-23 s.n. San Mateo Lower part of Colma Canyon Comment
  CAS-BOT-BC102293  Anthemis cotula Ira L. Wiggins 1973-6-24 22021 San Mateo San Francisquito Creek, about 75 m above Pope Street bridge, along line between Santa Clara and San Mateo Counties Comment
  JROH498  Anthemis cotula John H. Thomas 1963-6-23 10173 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge end of ridge Comment
  CAS-BOT-BC280640  Anthoxanthum occidentale Elmer I. Applegate 1895-3-9 815 San Mateo Near summit of Coast range west of Stanford University Comment
  SEINET7614641 Image available Anthoxanthum occidentale A. D. E. Elmer 1902-1 4124 San Mateo King's Mt. Comment
  JROH198  Anthriscus caucalis John H. Thomas 1974-5-3 17242 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS5265  Antirrhinum kelloggii R. F. Hoover 1941-4-23 4905 San Mateo Redwood City hills Redwood City Comment
  CAS-BOT-BC454479  Aphanes occidentalis Walter & Irja Knight 1965-3-21 949 San Mateo North Power Line Ridge, San Bruno Mountain Comment
  POM132688  Apiastrum angustifolium A. D. E. Elmer 1903-06 4461 San Mateo Crystal Springs Lake. Comment
  UC1285700  Aponogeton distachyos Rolf Benseler 1966-4-10 San Mateo 100 yards s of King Drive (formerly Chinese Cemetery Road), e side of Highway No. 5, Skyline Boulevard, northern end of San Mateo County King Drive; e side Highway No. 5, Skyline Boulevard Comment
  CAS-BOT-BC392065  Aquilegia eximia A. D. E. Elmer 1903-7-1 4952 San Mateo Crystal Springs Lake Comment
  UC311123  Aquilegia eximia A. D. E. Elmer 1903-1 4952 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC405898  Aquilegia formosa Peter Rubtzoff 1963-5-14 1353 San Mateo Brushy hills near the road east of Pilarcitos Lake Comment
  CAS-BOT-BC405899  Aquilegia formosa Phillip Wheeler 1965-3-28 s.n. San Mateo Columbine Gulch Comment
  UC635107  Aquilegia formosa H. L. Mason 1927-4-23 3674 San Mateo summit of rd betw La Hunda and Pescadero Creek Comment
  CHSC1435  Aquilegia formosa var. truncata J. Koopman 1929-5-11 San Mateo Moss Beach. Comment
  CAS-BOT-BC17336  Arabis blepharophylla Reed Clark Rollins 1942-4-30 3006 San Mateo Southeast slope of the San Bruno Hills about 1 mile west of Brisbane. Comment
  CAS-BOT-BC17337  Arabis blepharophylla David D. Keck 1933-5-11 2304 San Mateo Montara Summit, Montara Mountain. Comment
  JEPS90202  Arabis blepharophylla Dean W. Taylor 1989-3-30 10187 San Mateo crest of ne ridge of San Bruno Mountain ((ridge separating Guadalupe Valley from Vistacion Valley), Right-of-way of eastern-most set of PG&E high-voltage powerlines crossing mtn); Santa Cruz Mountains, San Bruno Mountain Comment
  CAS-BOT-BC17326  Arabis blepharophylla W. R. Dudley 1900-3-18 s.n. San Mateo Santa Cruz Peninsula. 1st high hill between Salado Valley and Colma. Comment
  CAS-BOT-BC17327  Arabis blepharophylla W. R. Dudley 1899-5-14 s.n. San Mateo Santa Cruz Peninsula. Top of hill, head of Baden Crek. Comment
  RSA112474  Aralia californica Theo C. Zschokke 1903-7-10 s.n. San Mateo Goat Ranch Road, Corte de Madera Cr. Comment
  CAS-BOT-BC304414  Arbutus menziesii A. D. E. Elmer 1903-5-1 4515 San Mateo Searsville Lake Comment
  CAS-BOT-BC24171  Arctostaphylos andersonii Gary D. Wallace 1974-12-28 1375 San Mateo Northern Santa Cruz Mtns. S of Upper Crystal Springs Res. along Skyline Blvd. 2.8 mimi N of jct. of King Mtn. Rd. oppos 640 Comment
  JEPS48587  Arctostaphylos andersonii James G. Daly 1934-1-1 175 San Mateo Middle La Honda Canyon Santa Cruz Mountains, San Gregorio Watershed Comment
  LA42267  Arctostaphylos andersonii E. C. Sutliffe; 1934-2-2 sn San Mateo Kings Mountain Comment
  SEINET11977844  Arctostaphylos andersonii L. S. Rose 1934-1 34026 San Mateo Skyline Blvd, 4 mi S Kings Mountain Comment
  SEINET11984878  Arctostaphylos andersonii R. Gankin, Jaacov, J. B. 1965-1 384 San Mateo CA 35 (Skyline Blvd), 1.1 mi N of junction with CA 84 Comment
  SEINET11989200  Arctostaphylos andersonii var. imbricata E. McClintock, Knight, W.; Knight, I. 1982-1 4647 San Mateo from windy Kamchatka Point, San Bruno Mountain 351 Comment
  CAS-BOT-BC23516  Arctostaphylos crustacea John Thomas Howell 1924-2-23 259 San Mateo King Mt. Comment
  CAS-BOT-BC23517  Arctostaphylos crustacea A. D. E. Elmer 1903-5-1 4558 San Mateo King Mt. Comment
  CAS-BOT-BC23546  Arctostaphylos crustacea L. S. Rose 1942-3-30 42007 San Mateo Rocky brushy hills, Kings Mountain Comment
  CAS-BOT-BC23547  Arctostaphylos crustacea W. R. Dudley 1899-5-14 s.n. San Mateo Hills by road from San Andreas Lake to Pilarcitos Comment
  JROH1929  Arctostaphylos crustacea subsp. crustacea John H. Thomas 1970-4-29 15612 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC24727  Arctostaphylos glandulosa subsp. glandulosa Elizabeth McClintock; Paul Reedberg 1988-4-5 s.n. San Mateo Canyon e. of Buckeye Canyon, on a hogback ridge. Comment
  CAS-BOT-BC24493  Arctostaphylos imbricata Marian L. Campbell 1915-6-17 s.n. San Mateo San Bruno Hills. Comment
  SBBG32379  Arctostaphylos imbricata L. S. Rose 1961-3-2 61014 San Mateo San Bruno Hills 365 Comment
  SBBG21959  Arctostaphylos montaraensis R. F. Thorne with P. C. Everett 1963-6-9 32224 San Mateo top of San Bruno Mtn, near the TV Tower 335 Comment
  CAS-BOT-BC27197  Arctostaphylos pacifica James B. Roof 1961-4-18 s.n. San Mateo NE face of San Bruno Mountain 335 Comment
  RSA633498  Arctostaphylos pacifica Jon E. Keeley 1996-6-24 27568 San Mateo On knob below end of paved road at top of San Bruno Mountain. 350 Comment
  CAS-BOT-BC44708  Arctostaphylos regismontana Walter Knight; Irja Knight 1964-9-14 831 San Mateo On Peak Mt. - Western sector 304 Comment
  CAS-BOT-BC44734  Arctostaphylos regismontana Roman Gankin 1959-3-22 323 San Mateo Kings Mountain Road, 1.2 miles east of junction with State Highway 5, ca. 5 miles west of Woodside. Comment
  JEPS78657  Arctostaphylos regismontana Edward Lee 1936-1-26 1736 San Mateo junction King's Mt. Rd. and Skyline Blvd (summit of ridge); Cahill Ridge 609 Comment
  POM203925  Arctostaphylos regismontana E. C. Sutliffe 1934-2-2 s.n. San Mateo Kings Mountain. Comment
  RSA141485  Arctostaphylos regismontana B. O. Schreiber 1938-10-16 2564 San Mateo On Kings Mountain. 609 Comment
  RSA636742  Arctostaphylos regismontana Jon E. Keeley, Melanie Baer Keeley 1993-9-8 24637 San Mateo NW side of Montara Mtn. 150 Comment
  UC1120830  Arctostaphylos regismontana A. E. Wieslander and Beryl O. Schreiber 1940-3-5 3 San Mateo road from roadside King's Mt.; Santa Cruz Quadrangle 274 Comment
  UC1120843  Arctostaphylos regismontana G. E. Sindel 1935-10-16 380 San Mateo 1 1/8 mi wnw Sierra Moreno; Santa Cruz Quadrangle Comment
  UC1424961  Arctostaphylos regismontana Gary D. Wallace 1974-12-28 1375 San Mateo along Skyline Blvd. s Upper Crystal Springs Res. (2.8 mi n of jct. of King Mtn. Rd. opposite Farwell's Rhododendron Nursery); Northern Santa Cruz Mtns. 640 Comment
  UC549743  Arctostaphylos regismontana J. E. Adams 1935-4-7 1044 San Mateo Skyline Blvd. Comment
  UC876529  Arctostaphylos regismontana Lewis S. Rose 1934-2-10 34026 San Mateo Skyline Blvd 4 mi s Kings Mountain (region of type) Comment
  UCD53804  Arctostaphylos regismontana Roman Gankin 1966-5-17 740 A San Mateo Montara Mountain. Comment
  JEPS90463  Arctostaphylos tomentosa subsp. crinita Dean W. Taylor 1994-7-5 14744 San Mateo ca. 2 mi se Pescadero (far western end of ridge, on private road that leaves Cloverdale Rd. 0.3 mi s of Pescadero High School); Santa Cruz Mountains, Butano Ridge 228 Comment
  JEPS48594  Arctostaphylos tomentosa subsp. crustacea James G. Daly 1934-1 543 San Mateo San Gregorio watershed Santa Cruz Mts. (sw San Mateo Co.) Comment
  JEPS48595  Arctostaphylos tomentosa subsp. crustacea James G. Daly 1934-1 570 San Mateo San Gregorio watershed Santa Cruz Mts. (sw San Mateo Co.) Comment
  POM222790  Arctostaphylos tomentosa subsp. crustacea S. S. Berry 1909-2-27 s.n. San Mateo Jasper Ridge. 168 Comment
  RSA48822  Arctostaphylos tomentosa subsp. crustacea E. K. Balls 1948-3-19 7870 San Mateo 2 mi. N. of S end of State Rt. 5. 305 Comment
  RSA636849  Arctostaphylos tomentosa subsp. crustacea Jon E. Keeley, Melanie Baer-Keeley 1993-9-8 24647 San Mateo NW side of Montara Mtn. 150 Comment
  UC1042396  Arctostaphylos tomentosa subsp. crustacea Lewis S. Rose 1949-3-18 49006 San Mateo hills w Belmont 91 Comment
  POM286194  Arctostaphylos tomentosa subsp. tomentosiformis Lyman Benson 1935-3-10 6255 San Mateo La Honda Grade. 518 Comment
  CAS-BOT-BC46834  Arctostaphylos uva-ursi Walter Knight; Irja Knight 1981-3-1 4055 San Mateo fire road edge about 200 yards east of summit parking lot of San Bruno Mountain Comment
  SEINET11987327  Arctostaphylos uva-ursi var. coactilis J. Sigg, McClintock, E.; Knight, W.; Knight, I. 1981-1 4204 San Mateo Strybing Arboretum, Golden Gate Park, San Francisco, orig. from San Bruno Mt., ca 200 yds E of shack Comment
  SEINET11987329  Arctostaphylos uva-ursi var. coactilis J. Sigg, McClintock, E.; Knight, W.; Knight, I. 1981-1 4202 San Mateo Strybing Arboretum, Golden Gate Park, San Francisco, orig. from San Bruno Mt Comment
  CDA19857  Arctotheca calendula R. Eaton 2002-5-8 PDR 1236792 San Mateo San Francisco Bay Area; Bean Hollow Rd. 0 Comment
  UCR240613  Armeria maritima T. B. Salvato, Lia V. D. Mansfield, Joel-Henry J. Mansfield 2008-6-14 3523 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-BC47702  Armeria maritima subsp. californica Adele Lewis Grant 1917-5-6 940 San Mateo Pebble Beach near Pescadero Comment
  POM204327  Armeria maritima subsp. californica I. L. Wiggins 1929-7-4 3801 San Mateo Pescadero Beach Comment
  CAS-BOT-BC82515  Arnica discoidea Josephine D. Randall 1907-7-28 49 San Mateo [Iverson's] Iverson near Pescadero Creek Comment
  JROH4838  Arrhenatherum elatius John Rawlings 2008-5-7 1021 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along Road L in disturbed grassy area, under large valley oak. 107 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
  SEINET11836170  Artemisia californica L. S. Rose 1936-1 36716 San Mateo Granada 30 Comment
  JROH522  Artemisia douglasiana John Hunter Thomas 1982-7-2 21057 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low-flow crossing Comment
  OBI49162  Artemisia douglasiana Lewis S. Rose 1938-8-18 38232 San Mateo San Mateo 30 Comment
  SBBG33991  Artemisia douglasiana L. S. Rose 1969-8-8 69090 San Mateo Skyline Blvd and Half Moon Bay Rd, Cahill Ridge 243 Comment
  SEINET191613  Artemisia heterophylla Lewis S. Rose 1938-8-18 San Mateo San Mateo County: Canyon Bottom. 30 Comment
  UC484308  Artemisia pycnocephala C. B. Wolf 1930-11-5 1806 San Mateo along coastal bluffs s of Pescadero 7 Comment
  SEINET10580520  Asclepias fascicularis Lewis S. Rose 1965-8-27 Rose 65092 San Mateo Emerald Lake, West of Redwood City, dry slopes. 122 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
  RSA0025139  Aster chilensis Peter Rubtzoff, Roman Gankin 1975-9-11 8377 San Mateo Saddle' area on north side of Guadalupe Canyon Parkway west of Radio Road junction. San Bruno Mountains. Comment
  RSA101026  Aster radulinus G. Oberlander 1949-7-10 364 San Mateo Sawyer Ridge, San Francisco Watershed Reserve Comment
  CAS-BOT-BC478065  Asteraceae H. A. Dutton 1900-5-6 s.n. San Mateo Santa Cruz Mountain Peninsula, Woodside Comment
  CAS-BOT-BC186753  Astragalus gambelianus Lois E. James 1946-4-16 1741 San Mateo Back of Redwood City. High Road off Woodside Road Comment
  CAS-BOT-BC186767  Astragalus gambelianus James McMurphy 1906-5-8 s.n. San Mateo Head of Crystal Springs Lake Comment
  JROH1995  Astragalus gambelianus John Hunter Thomas 1982-4-28 20876 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC186764  Astragalus gambelianus Ira L. Wiggins 1925-4-11 1624 San Mateo Hillside across from Schroder's. One and one half miles above Stanford University Comment
  SD87780  Astragalus menziesii Frank W. Peirson 1925-9-13 6424 San Mateo Rockaway Beach, in detritus at the foot of cliffs at sea level Comment
  CAS-BOT-BC194432  Astragalus nuttallii var. virgatus Phillip C. Wheeler 1965-6-20 s.n. San Mateo Great Meadow adjacent to Radio Road, San Bruno Mountain Comment
  JEPS54799  Astragalus pycnostachyus William S. Cooper 1925-5-28 17 San Mateo Tunitas Comment
  CAS-BOT-BC193090  Astragalus pycnostachyus var. pycnostachyus C. F. B. 1902-10-1 1744 San Mateo Pillar Point Comment
  RSA294164  Astragalus pycnostachyus var. pycnostachyus Robert A. Norris, John L. Inase, Allen Nakagawa 1981-7-25 4225 San Mateo N of mouth of Pescadero Creek, Pescadero State Beach. Comment
  JROH1806  Atriplex prostrata John Hunter Thomas 1979-9-9 19729 San Mateo Jasper Ridge Biological Preserve, Stanford University; edge of Searsville Lake Comment
  CAS-BOT-BC146082  Avena barbata T. C. Fuller 1969-6-12 18549 San Mateo Ca. 3 km. northeast of Pescadero. Comment
  CAS-BOT-BC146124  Avena barbata Catherine A. Toschi 1963-2-23 63 :31 San Mateo North slope San Bruno Mountains above Crocker Avenue. 152 Comment
  JEPS128391  Avena barbata Adam C. Schneider 2013-5-17 147 San Mateo Crystal Springs Reservoir. Comment
  CAS-BOT-BC146213  Avena brevis John Thomas Howell 1954-6-16 30003 San Mateo Belmont. Ralston Avenue at 6th. Comment
  CAS-BOT-BC145960  Avena fatua Elizabeth McClintock; Paul Reeberg 1989-3-19 s.n. San Mateo San Bruno Mountains. Shearwater. 91 Comment
  JROH5754  Avena fatua J. C. Gaither 1982-4-18 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Sand Hill Road Gate, old motorcycle racetrack. Comment
  SEINET10528168  Avena occidentalis Unknown Anonymous s.n. San Mateo Dry hill, Millbrae Meadows. Comment
  RSA226539  Baccharis douglasii E. K. Balls 1969-9-18 12172 San Mateo 5 miles south of junction Highway 84 and Highway 35 along La Honda Road. Comment
  JEPS59963  Baccharis glutinosa Lewis S. Rose 1969-8-22 69099 San Mateo Skyline Blvd. & La Honda Rd. 609 Comment
  JROH538  Baccharis glutinosa John Hunter Thomas 1979-9-9 19731 San Mateo Jasper Ridge Biological Preserve, Stanford University; edge of Searsville Lake Comment
  SJSU15816  Baccharis glutinosa John Rawlings, Ken Hickman 2016-7-21 1901 San Mateo Serpentine seep area (Fountain thistle seep) up-slope from the Hwy 92 west onramp to Hwy 280 north; down-slope from San Francisco Watershed fence line 122 Comment
  CAS-BOT-BC99506  Baccharis pilularis Walter Knight; Irja Knight; Elizabeth McClintock 1964-9-11 s.n. San Mateo Point San Bruno, San Bruno Mountain Comment
  CAS-BOT-BC99507  Baccharis pilularis Walter Knight; Irja Knight; Elizabeth McClintock 1963-9-2 s.n. San Mateo Radio Road, San Bruno Mountains Comment
  RSA136310  Baccharis pilularis John H. Thomas 1949-10-16 1144 San Mateo Along sandstone bluffs, just north of outlet of San Gregorio Creek Comment
  SD30701  Baccharis pilularis Edith A. Purer 1922-8-4 5409 San Mateo Clay hillside near Baden Station. Comment
  UCSC007721  Baccharis pilularis Becky Hendricks, Chris Lay 2012-6-22 s.n. San Mateo Ano Nuevo State Park Comment
  JROH554  Baccharis pilularis subsp. consanguinea John Hunter Thomas 1988-10-17 24599 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET3387422 Image available Baeria hirsutula Lewis S. Rose 1933-5-3 33141 San Mateo Montara, Ocean Bluffs Comment
  CAS-BOT-BC16620  Barbarea orthoceras Fred Hemphill 1973-4-8 621 San Mateo San Carlos. Area north of Malabar Road and Melendy Drive. 207 Comment
  CAS-BOT-BC16624  Barbarea orthoceras Fred Hemphill 1973-3-17 711 San Mateo San Carlos. Area north of Malabar Road and Melendy Drive. 207 Comment
  CAS-BOT-BC16630  Barbarea orthoceras John H. Thomas 1965-4-29 10617 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC16634  Barbarea orthoceras Walter Knight; Irja Knight 1965-3-15 1236 San Mateo Colma Canyon - San Bruno Mountain. Comment
  JROH1451  Barbarea orthoceras John Hunter Thomas 1987-4-7 24175 San Mateo Jasper Ridge Biological Preserve, Stanford University; near new bridge over San Francisquito Creek Comment
  JEPS35291  Bellardia trixago J. H. Thomas 1962-5-8 9852 San Mateo Pigeon Point Comment
  JROH3913  Bellardia trixago John H. Thomas 1969-5-16 15047 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3916  Bellardia trixago John H. Thomas 1975-6-5 17930 San Mateo Jasper Ridge Biological Preserve, Stanford University; near lowflow crossing Comment
  JROH3926  Bellardia trixago John Hunter Thomas 1987-5-19 24291 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  UCR121576  Bellardia trixago George K. Helmkamp, E. A. Helmkamp 1999-6-28 5008 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-BC75879  Berberis pinnata G. Edelbrock 1975-3-21 021 San Mateo On ridge at end of Crocker Street, San Bruno Mountain. 152 Comment
  JROH1321  Berberis pinnata subsp. pinnata H. L. Mason 1922-3-9 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; between "Zoo Shack" and sandstone caves Comment
  UCR251686  Beta vulgaris Detlef Bartsch 2014-6-13 s.n. San Mateo Menlo Park, Bayfront Park at Marsh Road 3 Comment
  POM32550  Boisduvalia densiflora var. densiflora A. D. E. Elmer 1903-06 4273 San Mateo Crystal Springs Lake. Comment
  CAS-BOT-BC95345  Bowlesia incana George Oberlander 1950-5-21 963 San Mateo Southern boundary of San Francisco Watershed Reserve Comment
  JROH4855  Brachypodium distachyon John Hunter Thomas 1988-6-2 24509 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CDA20475  Brachypodium sylvaticum J. Beall 2003-12-12 PDR 1387963 San Mateo San Francisco Bay Area; Along Hwy 84 at Grandview Dr. 0 Comment
  CDA36482  Brachypodium sylvaticum Ellen Gartside 2011-7-18 s.n. San Mateo Woodside; Martinez Rd., north edge of corral. Comment
  JROH5793  Brachypodium sylvaticum Nona Chiariello, Bill Gomez 2016-6-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Just east of path inside boundary fence along Portola Road south of caretaker's house. 105 Comment
  SEINET12004611  Brassica juncea E. H. Graham 1931-1 s.n. San Mateo Ano Nuevo Pt., S of San Francisco Comment
  CAS-BOT-BC36671  Brassica oleracea J. Ed. McClellan; Bonnie McClellan 1972-3-22 s.n. San Mateo In abandoned field on Highway 1 opposite Princeton. Comment
  CAS-BOT-BC36795  Brassica rapa Catherine A. Toschi 1963-2-23 63 :30 San Mateo North slope San Bruno Mountains above Crocker Avenue. 137 Comment
  CAS-BOT-BC145495  Briza maxima John R. Barth 1963-5-23 42 San Mateo Pebble Beach. Comment
  JROH4877  Briza maxima John Hunter Thomas 1992-5-5 25207 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near picnic area and vicinity Comment
  UCD57153  Briza maxima Anonymous 1991-5-27 24 San Mateo Along Lake Merced, in Daly City. Comment
  CAS-BOT-BC145324  Briza minor W. R. Dudley 1900-3-16 s.n. San Mateo Santa Cruz Mountain Peninsula. North of Triples Store. Comment
  CAS-BOT-BC145327  Briza minor Copeland 1903-5-24 3257 San Mateo Above Crystal Springs Lake. Comment
  CAS-BOT-BC145333  Briza minor John H. Thomas 1964-4-30 10374 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC145340  Briza minor Elizabeth McClintock 1965-6-13 s.n. San Mateo San Bruno Mountain. Lower slope on south side above Olivet Cemetery. Comment
  CAS-BOT-BC145341  Briza minor Walter Knight; Irja Knight 1965-4-24 1027 San Mateo San Bruno Mountain. Point San Bruno. Comment
  UCD57381  Briza minor A. A. Beetle 1941-4-20 1738 San Mateo Near San Carlos. Comment
  UCD57435  Briza minor A. A. Beetle 1941-4-20 1738 San Mateo Near San Carlos. Comment
  CAS-BOT-BC483184  Brodiaea terrestris subsp. terrestris George Oberlander 1950-4-16 683 San Mateo Sawyer Ridge Comment
  CAS-BOT-BC144143  Bromus Ned Cahill 1974-4-29 189 San Mateo Near the intersection of Canada and Edgewood roads, about 3 miles westward from Redwood City. Comment
  POM286978  Bromus carinatus Lyman Benson 1930-4-17 2079 a San Mateo Stanford University. Corte Madera Creek. 122 Comment
  CAS-BOT-BC148978  Bromus carinatus var. carinatus John Thomas Howell 1960-4-20 35210 A San Mateo In garden of Frances Payne Stickney, Hillcrest Road, San Mateo. Comment
  CAS-BOT-BC148996  Bromus carinatus var. carinatus W. R. Dudley 1894-7-30 s.n. San Mateo Santa Cruz Mountain Peninsula. Near La Honda. Comment
  CAS-BOT-BC149020  Bromus carinatus var. carinatus R. E. Frenkel 1964-8-21 758 San Mateo On Portola Ridge Road, 0.7 mile north of Sawyer Ridge Road, SFWD. 320 Comment
  CAS-BOT-BC149025  Bromus carinatus var. carinatus Le Roy Abrams 1902-5-11 2462 San Mateo Crystal Springs. Comment
  JROH4902  Bromus carinatus var. carinatus Toni Corelli 2009-5-11 356 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along Road C 112 Comment
  JROH5634  Bromus carinatus var. carinatus John Rawlings 2004-7-11 1002 San Mateo Jasper Ridge Biological Preserve, Stanford University. Hermit's cabin site. 180 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
  CDA31070  Bromus catharticus Robin Breckenridge, K. Filippini 2010-2-17 PDR# 1463753 San Mateo Pescadero: Bean Hollow Road (across from Bay Flower Company). 0 Comment
  JROH4911  Bromus diandrus John Rawlings 2011-8-5 1083 San Mateo Jasper Ridge Biological Preserve, Stanford University; in gravel bed of Bear Creek near confluence with San Francisquito Creek 81 Comment
  UCD164419  Bromus diandrus Peter Rubtzoff 1977-6-21 9056 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. East Fork Colma Creek Canyon area. Comment
  CAS-BOT-BC155136  Bromus hordeaceus Ned Cahill 1974-4-30 222 San Mateo Near the intersection of Canada and Edgewood Roads, about 3 miles westward from Redwood City. Comment
  JROH4919  Bromus hordeaceus John H. Thomas 1966-4-24 11580 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4929  Bromus hordeaceus John Rawlings 2010-4-28 1091 San Mateo Jasper Ridge Biological Preserve, Stanford University; on slope south of the visitor parking lot 119 Comment
  UCD58829  Bromus hordeaceus Beecher Crampton 1962-6-11 6504 San Mateo Sharp Park. Mori's Point Road just west of State Hwy. 1. Comment
  CAS-BOT-BC162409  Bromus laevipes Josephine D. Randall 1907-6-5 155 San Mateo Santa Cruz Peninsula. Portola Valley. Comment
  RSA195570  Bromus madritensis John H. Thomas 1966-4-24 11584 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Comment
  JROH5718  Bromus madritensis subsp. madritensis John Rawlings 2015-4-26 1649 San Mateo Jasper Ridge Biological Preserve, Stanford University; near cistern at west side of Field Station. 1120 Comment
  CAS-BOT-BC162227  Bromus maritimus John H. Thomas 1963-7-19 10196 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles northwest of Santa Cruz. Comment
  UCSC007724  Bromus maritimus Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CDA34495  Bromus pseudolaevipes D. G. Kelch, David Gernandt, Steffi Ickert-Bond, Yingli Guo 2011-4-22 11 .174B San Mateo Swanton Rd just S of Ano Nuevo above Weddell Creek. Comment
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Nov 26 2021
  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
  SEINET10933427  Bromus rigidus Delzie Demaree 1932-5-12 Demaree 9128 San Mateo Stanford Farm. Dry situations. Comment
  CAS-BOT-BC161754  Bromus rubens Walter Knight; Irja Knight 1965-5-15 s.n. San Mateo San Bruno Mountain. Pig Ranch Ravine. Comment
  JROH4960  Bromus sterilis W. H. Lennihan 1990-4-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Across dam, 50 yards to r. on path, r. side of path on edge, just next to 10-12 foot Sambucus mexicana. 111 Comment
  JROH4966  Bromus tectorum John Hunter Thomas 1983-7-7 22827 A San Mateo Jasper Ridge Biological Preserve, Stanford University; near edge of lake below Searsville Lab Comment
  CAS-BOT-BC185394  Bromus vulgaris W. R. Dudley 1896-7-29 s.n. San Mateo Santa Cruz Mountain Peninsula. La Honda. Comment
  CAS-BOT-BC185397  Bromus vulgaris L. R. Abrams 1915-6-14 5562 San Mateo Kings Mountain Road. Comment
  JEPS26847  Bromus vulgaris Rimo Bacigalupi with J. H. Thomas and L. Heckard 1961-5-23 7710 San Mateo 1/4 mi w of crossing with Skyline Boulevard (along Alpine Road); Alpine Road 685 Comment
  JROH4971  Bromus vulgaris John Rawlings 2010-6-16 1060 San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail 1, 25 yards northwest of first redwood grove under coast live oak. 86 Comment
  CAS-BOT-BC36871  Cakile edentula var. edentula W. R. Dudley 1908-10-4 s.n. San Mateo Santa Cruz Mountain Peninsula. Laguna Salada. Comment
  UC984909  Cakile maritima Ira L. Wiggins 1949-7-2 12196 San Mateo Pescadero Beach Comment
  RSA128368  Cakile maritima var. maritima P. H. Raven 1950-4-30 1965 San Mateo Montara. Comment
  CAS-BOT-BC27843  Calais kelloggii Albert Kellogg s.n. San Mateo San Bruno Mts. Comment
  CAS-BOT-BC185147  Calamagrostis nutkaensis A. D. E. Elmer 1903-5-1 5040 San Mateo San Pedro. Comment
  POM199095  Calamagrostis nutkaensis A. D. E. Elmer 1903-05 5040 San Mateo San Pedro 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
  JROH3320  Calandrinia ciliata Duncan M. Porter 1961-2-18 745 San Mateo Jasper Ridge Biological Preserve, Stanford University; Westridge end of ridge Comment
  JROH3323  Calandrinia ciliata John H. Thomas 1973-3-11 16478 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SD655  Calochortus albus Ulysses S. Grant IV Jun 1925 San Mateo Near La Honda. Comment
  CAS-BOT-BC492208  Calochortus albus Henry J. Thompson 1951-6-10 1502 San Mateo along Alpine Creek Road, 10 miles south of Palo Alto 304 Comment
  CAS-BOT-BC492209  Calochortus albus Elmer I. Applegate 1895-4-8 727 San Mateo Page Mill Creek, above Stanford University Comment
  RSA169882  Calochortus albus A. D. E. Elmer 1903-05 4846 San Mateo Iversons Place Comment
  JROH4625  Calochortus argillosus John Hunter Thomas 1977-6-7 18734 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4632  Calochortus luteus D. E. Breedlove 1971-5-31 19357 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  UC119756  Calochortus luteus Katharine Brandegee 1905-6-20 San Mateo near Lake Pilarcitos Comment
  CAS-BOT-BC491984  Calochortus luteus Henry J. Thompson 1951-6-10 1501 San Mateo Westridge Hills, just west of Los Trancos Creek, 5 miles west of Palo Alto 121 Comment
  SEINET12053937  Calochortus luteus Unknown 1932-1 9159 San Mateo no further locality Comment
  JEPS23925  Calochortus tolmiei Le Roy Abrams 1902-5-20 2473 San Mateo Kings Mountain Comment
  UC729636  Calochortus tolmiei Carl B. Wolf 1929-5-22 3722 San Mateo near La Honda grade; Santa Cruz Mts. 182 Comment
  CAS-BOT-BC494041  Calochortus venustus Mrs. Alvin Seale 1932-6-5 s.n. San Mateo Hills near Redwood City Comment
  CAS-BOT-BC494045  Calochortus venustus Cherie Wetzel 1969-6-20 860 San Mateo Serpentine near Canada College, Redwood City, just off of Farm Hill Blvd Comment
  JROH566  Calycadenia multiglandulosa John H. Thomas 1974-4-25 17207 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH572  Calycadenia multiglandulosa John Hunter Thomas 1986-6-9 24094 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM263769  Calycadenia multiglandulosa L. S. Rose 1941-6-12 41268 San Mateo Emerald Lake, hills west of Redwood City. 120 Comment
  CHSC42068  Calystegia purpurata Rusti Gammon 1986-3-30 13 San Mateo Ca. 8.1 mi sw of Saratoga, 4.1 mi w off Hwy 9. 569 Comment
  POM129524  Calystegia purpurata A. D. E. Elmer 1903-06 4299 San Mateo Pescadero Creek Comment
  CAS-BOT-BC224662  Calystegia purpurata subsp. purpurata Fred Hemphill 1973-5-6 764 San Mateo San Carlos. North of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC224669  Calystegia purpurata subsp. purpurata Fred Hemphill 1973-4-22 734 San Mateo San Carlos. North of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC224647  Calystegia purpurata subsp. purpurata Mary Helen Kelson 1956-6-2 229 San Mateo Page Mill Road, 3 miles from Skyline Boulevard 213 Comment
  CAS-BOT-BC436440  Calystegia subacaulis George Oberlander 1950-4-16 739 San Mateo San Francisco Watershed Reserve, south boundary Comment
  CAS-BOT-BC436441  Calystegia subacaulis Lewis S. Rose 1956-5-28 56080 San Mateo Skyline Blvd west of San Mateo 182 Comment
  CAS-BOT-BC436445  Calystegia subacaulis Phillip C. Wheeler 1965-6-19 s.n. San Mateo San Bruno Mountain, east of quarry Comment
  POM171567  Camissonia cheiranthifolia subsp. cheiranthifolia R. L. Pendleton 1907-4-20 586 San Mateo Lake Merced 30 Comment
  POM271878  Camissonia ovata Arthur L. Cohen 1935-4-21 632 San Mateo Jasper Ridge, Stanford University. Santa Cruz Mtn Range, San Francisco Bay Watershed. 152 Comment
  CAS-BOT-BC160324  Camissoniopsis cheiranthifolia subsp. cheiranthifolia W. R. Dudley 1901-7-5 s.n. San Mateo Pescadero Comment
  CAS-BOT-BC160327  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Robt. T. Orr 1961-6-27 s.n. San Mateo [Ano] Ano Nuevo Island Comment
  UC1736718  Camissoniopsis hirtella Dean W. Taylor 1989-8-1 10411 San Mateo Montara Mountain, saddle between North Peak and Montara Knob 518 Comment
  SEINET10463042  Campanula prenanthoides Wicksten 1971-7-7 WICKSTEN 155 San Mateo Huddart Park, road cut along road to family campground Comment
  SEINET10463046  Campanula prenanthoides Leitholt LEITHOLT s.n. San Mateo Pascadero Comment
  SEINET10463364  Campanula prenanthoides Elvander 1970-7-5 ELVANDER 287 San Mateo 1 mile on Water Pant road from intersection with entrance to Butano State Park. Sandy loam, redwood forest. 152 Comment
  CAS-BOT-BC37161  Capsella bursa-pastoris David D. Keck 1932-2-16 1378 San Mateo Portola. Comment
  CAS-BOT-BC37664  Cardamine californica Elizabeth McClintock 1965-3-14 s.n. San Mateo San Bruno Mountains. Cable Ravine. Comment
  CAS-BOT-BC37676  Cardamine californica A. D. E. Elmer 1903-4-1 4468 San Mateo Portola. Comment
  CAS-BOT-BC37677  Cardamine californica A. D. E. Elmer 1903-4-1 4468 San Mateo Portola. Comment
  CAS-BOT-BC37681  Cardamine californica George Oberlander 1950-2-1 453 San Mateo San Francisco Watershed Reserve. Pilarcitos Canyon. Comment
  JROH1484  Cardamine californica John Hunter Thomas 1982-4-4 20822 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  SD38004  Cardamine californica Marie Cummings 1933-4-27 52 San Mateo King's Mountain Comment
  RSA484626  Cardamine californica var. integrifolia Glenn A. Gorelick 1967-2-10 s.n. San Mateo San Bruno Mountains, overlooking Daly City near San Francisco. Comment
  RSA159431  Cardamine californica var. integrifolia R. C. Rollins 1941-2-22 2937 San Mateo Santa Cruz Mts., about 8 miles NW of Palo Alto. 152 Comment
  SEINET5542289  Cardamine californica var. integrifolia H. S. Gentry 1931-1 16 San Mateo 1.5 miles W of San Mateo, Half-Moon Bay road. Comment
  UC483498  Cardamine californica var. integrifolia Ira L. Wiggins 1931-2-21 5089 a San Mateo 1/2 mi n Pebble Beach Hotel (Pescadero Beach); , n of Pebble Beach Hotel Comment
  JROH1501  Cardamine oligosperma John Hunter Thomas 1987-4-7 24173 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Indian acorn grinding rock Comment
  JROH583  Carduus tenuiflorus Suzanne Biossat 1943-5-7 75 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CDA6893  Carduus tenuiflorus W. S. Ball 1946-4-19 San Mateo 5 miles below Half Moon Bay. 0 Comment
  CAS-BOT-BC18186  Carex W. R. Dudley 1899-4-13 s.n. San Mateo San Francisquito Creek below Cedro Cottage Bridge, Stanford University. Comment
  CAS-BOT-BC18187  Carex Roxana S. Ferris 1918-3-31 753 San Mateo Edge of Helvetio (Mud) Lake, Coal Mine Ridge. Comment
  JROH4311  Carex amplifolia John Rawlings, Toni Corelli 2012-5-15 1112 San Mateo Jasper Ridge Biological Preserve, Stanford University. Bear Creek at Road H crossing near boundary fence. 82 Comment
  NY25686  Carex amplifolia L. S. Rose 1933-6-23 33250 San Mateo Kings Mountain Comment
  SEINET7549670 Image available Carex amplifolia Lewis S. Rose 1933-6-23 33250 San Mateo Kings Mountain. Comment
  JROH4319  Carex barbarae John Hunter Thomas 1989-6-6 24759 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC19323  Carex barbarae Alice Eastwood; John Thomas Howell; J. W. Stacey 1938-4-24 5247 San Mateo Lobitos. Comment
  JROH4321  Carex bolanderi Carol Zabel, Toni Corelli 2005-6-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Along Trail 13 south of Leonard's Bridge. 106 Comment
  SEINET7552599 Image available Carex bolanderi Lewis S. Rose 1933-6-23 s.n. San Mateo Kings Mountain Steams. Comment
  CAS-BOT-BC34073  Carex brevicaulis John Thomas Howell 1938-5-1 13774 San Mateo San Bruno Hills. Comment
  SJSU2296  Carex brevicaulis C. W. Sharsmith 1950-4-16 6625 San Mateo coastal bluff, Pescadero Point near Pescadero Comment
  UCD166147  Carex brevicaulis Jack Major; M. Forde and S. Bamberg 1962-4-3 732 San Mateo Ano Nuevo Point. (Exact location unknown. Coordinates estimated by label maker). Comment
  CAS-BOT-BC18923  Carex densa John Thomas Howell 1938-5-1 13781 San Mateo Near South San Francisco. Comment
  CAS-BOT-BC18928  Carex densa A. D. E. Elmer 1903-6-1 4428 San Mateo Crystal Springs Lake. Comment
  CAS-BOT-BC18941  Carex densa W. R. Dudley 1896-4-4 s.n. San Mateo Santa Cruz Mountain Peninsula. Near Summit Springs, near King's Mountain. Comment
  CAS-BOT-BC18933  Carex densa Lewis S. Rose 1936-5-24 36299 San Mateo East of Burlingame. 60 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
  UC823331  Carex densa Lewis S. Rose 1937-5-16 37279 San Mateo S San Francisco 15 Comment
  CAS-BOT-BC21811  Carex harfordii Lewis S. Rose 1935-5-29 35194 San Mateo Kings Mountain. Comment
  CAS-BOT-BC210005  Carex harfordii Peter Rubtzoff 1975-5-21 7968 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction, East Fork Colma Creek Canyon. Comment
  SEINET10883864  Carex laciniata Adolph D. E. Elmer Elmer 2958 San Mateo Lake Merced. Comment
  CAS-BOT-BC119445  Carex nudata D. D. Davis 1903-4-1 s.n. San Mateo San Francisquito Creek. Comment
  CAS-BOT-BC173709  Carex obnupta Peter Rubtzoff; Roman Gankin 1975-5-21 7965 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  CAS-BOT-BC119342  Carex obnupta Elizabeth McClintock 1974-11-8 s.n. San Mateo Seepage area on N side of Guadalupe Parkway in the saddle. San Bruno Mt. Comment
  CAS-BOT-BC119349  Carex obnupta Peter Rubtzoff 1953-5-14 1348 San Mateo Pilareitos Creek canyon, 1 to 2 mi downstream from Pilareitos Lake. 609 Comment
  RSA18462  Carex senta Carl B. Wolf 1927-6-29 546 San Mateo South of Pebble Beach near Pescadero Comment
  JROH4360  Carex serratodens John Hunter Thomas 1986-6-9 24093 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET7547018  Carex serratodens C. F. Baker 1902-1 811 San Mateo Crystal Springs Lake Comment
  JROH4363  Carex subbracteata John Rawlings 2010-5-19 1054 San Mateo Jasper Ridge Biological Preserve, Stanford University. A few feet downstream from bridge at Ribes aureum site on Trail 12. 111 Comment
  POM79200  Carex subbracteata A. D. E. Elmer 1903-06 4429 San Mateo Crystal Springs Lake. Comment
  SBBG29942  Carex subbracteata J. T. Howell 1938-5-1 13783 San Mateo near South San Francisco Comment
  UC1159367  Carex subbracteata J. H. Thomas 1959-4-4 7657 San Mateo about 0.7 mi s Gazos Creek (about 6.5 mi s from Pescadero) 45 Comment
  UC306626  Carex subbracteata A. D. E. Elmer June, 1903 4429 San Mateo Crystal Springs Lake 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-BC116829  Carex subbracteata var. subbracteata W. R. Dudley 1906-6-10 s.n. San Mateo Cahill Ridge, 100 yds N of Spanish Town Road. Comment
  UC826092  Carex tumulicola Wilhelm N. Suksdorf 1913-6-30 377 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC115505  Carex tumulicola Elizabeth McClintock; P. Reeberg 1989-5-23 s.n. San Mateo Below the east end of Ranch Road, western Guadalupe Hills. 99 Comment
  JROH4371  Carex tumulicola W. Lennihan 1989-5-24 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail 12 (Mapache), left side of trail in dense section before coming out to meadow. Comment
  CAS-BOT-BC249185  Castilleja affinis James McMurphy 1907-5-19 s.n. San Mateo Coal Mine Ridge Comment
  JEPS17620  Castilleja affinis subsp. affinis Rimo Bacigalupi with G. Thomas Robbins 1955-8-4 5443 San Mateo just opposite Thornton Beach (e of State Highway 1) Comment
  JEPS47391  Castilleja affinis subsp. affinis L. R. Heckard 1964-6-24 1402 San Mateo e of Upper Crystal Springs Reservoir (near upper end) Comment
  JEPS88800  Castilleja affinis subsp. affinis T. I. and F. M. Chuang 1991-7-3 7860 San Mateo 1.8 mi sw Interstate 280 junction with Route 92 (on Route 92) Comment
  UCR139351  Castilleja ambigua David D. Keck 1932-4-29 1453 San Mateo San Francisco Bay Region, Burlingame-San Mateo city limits, Bayshore Highway 3 Comment
  POM194753  Castilleja ambigua subsp. ambigua D. D. Keck 1927-6-10 394 San Mateo Radio Station, Montara Point. 0 Comment
  SBBG54525  Castilleja ambigua subsp. ambigua F. W. Pennell, D. D. Keck 1940-3-15 25427 San Mateo US Hwy 101, Burlingame 1 Comment
  SD234177  Castilleja densiflora Claude Bonang 1958-4-4 13 San Mateo Jasper Ridge. Meadow. Comment
  JEPS25430  Castilleja densiflora subsp. densiflora Rimo Bacigalupi with L. R. Heckard, J. B. Roof and Lynn Harman 1961-4-24 7608 San Mateo Colma Canyon, just below road up to T.V. and radio stations on San Bruno Mountain San Bruno Mountain 228 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
  UC1012313  Castilleja exserta F. W. Pennell and L. R. Abrams 1940-5-16 25432 San Mateo 2 mi sw Skyline Boulevard (on Alpine Creek Road) 579 Comment
  SJSU11539  Castilleja exserta subsp. exserta S. H. Casey 1969-5-18 253 San Mateo San Bruno Mt Comment
  SEINET12288716  Castilleja latifolia Unknown 1932-1 8989 San Mateo between Sky Line Drive & Half Moon Bay Comment
  JROH3998  Castilleja rubicundula subsp. lithospermoides John H. Thomas 1974-4-25 17197 San Mateo Jasper Ridge Biological Preserve, Stanford University; on top of ridge near the Searsville end Comment
  JROH4005  Castilleja rubicundula subsp. lithospermoides John Hunter Thomas 1982-4-30 20879 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC886506  Castilleja rubicundula subsp. lithospermoides Alice Eastwood 1912-6-10 321 San Mateo Crystal Springs Comment
  JEPS103884  Castilleja subinclusa T. I. Chuang and F. M. Chuang 1991-7-1 7850 San Mateo 0.8 miles N of San Gregorio Beach. Comment
  JEPS60425  Castilleja subinclusa subsp. franciscana T. I. Chuang and F. M. Chuang 1969-6-22 6665 San Mateo 0.5 mi n Lobitos Creek Road junction with Verde Road (on Lobitos Creek Road) Comment
  JEPS85202  Castilleja subinclusa subsp. franciscana Roy E. Buck and James A. West 1986-8-17 553 San Mateo ca 3.2 air km ene Franklin Point (Cascade Ranch, just s of Whitehouse Canyon Road, next drainage s of Whitehouse Creek drainage, on both sides of old ranch road) 106 Comment
  JEPS88830  Castilleja subinclusa subsp. franciscana T. I. and F. M. Chuang 1991-7-1 7848 San Mateo 0.8 mi n San Gregorio Beach Comment
  JEPS30959  Castilleja subinclusa subsp. franciscana D. E. Breedlove 1961-6-18 602 San Mateo 3 mi s Half Moon Bay-San Mateo Road (on State Hwy 5); Santa Cruz Mountains 365 Comment
  UC1039782  Castilleja subinclusa subsp. franciscana H. L. Mason 1927-4-23 3678 San Mateo La Honda to Pescadero Creek (via Blumquist Mill) Comment
  JEPS6880  Castilleja wightii Rimo Bacigalupi with J. R. Sweeney 1954-8-3 4739 San Mateo lower slopes Lobitos Canyon (0.25 mi e of and above the junction of the road up the canyon with the old coast road) 97 Comment
  RSA191943  Castilleja wightii Robert F. Thorne, Percy C. Everett 1963-6-9 32210 San Mateo On top of San Bruno Mountain, near TV tower. 335 Comment
  UC1341771  Castilleja wightii Noel H. Holmgren and James L. Reveal 1966-6-5 2632 San Mateo 0.25 mi s Skyline Boulevard (Calif. Hwy. 35) jct. with Calif. Hwy. 1 Comment
  UC1537582  Castilleja wightii Gordon H. True Jr. 1936-6-14 510 San Mateo 1 mi from Skyline Blvd. (on Salada Beach Road) 182 Comment
  UC729641  Castilleja wightii Carl B. Wolf 1929-5-25 3730 San Mateo s of Pescadero (Pebble Beach); Pebble Beach Comment
  JEPS88823  Castilleja wightii T. I. and F. M. Chuang 1991-7-1 7846 San Mateo 1.1 mi n Montana Comment
  POM248731  Castilleja wightii J. T. Howell 1938-5-1 13767 San Mateo Colma Canyon. Comment
  RSA21997  Castilleja wightii J. T. Howell 1938-5-1 13767 San Mateo Colma Canyon. Comment
  SEINET8357659  Castilleja wightii A. D. E. Elmer 1903-1 4761 San Mateo San Pedro. Comment
  SJSU11476  Castilleja wightii S. H. Casey 1969-5-18 250 San Mateo San Bruno Mt below Fern Rock Comment
  UCD123037  Castilleja wightii Lewis S. Rose 1965-4-22 65026 San Mateo San Bruno Mountain, south of parking lot. 365 Comment
  JROH1522  Caulanthus lasiophyllus John H. Thomas 1961-4-4 9044 F San Mateo Jasper Ridge Biological Preserve, Stanford University; serpentine area near Westridge end of ridge Comment
  JROH1524  Caulanthus lasiophyllus John H. Thomas 1967-5-31 12940 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC40396  Caulanthus lasiophyllus Walter Knight; Irja Knight 1965-5-9 1103 San Mateo San Bruno Mountain. In Devil's Arroyo. Comment
  CAS-BOT-BC40397  Caulanthus lasiophyllus Peter H. Raven 1950-4-16 1802 San Mateo San Bruno Mountain. Summit Ridge. 243 Comment
  CAS-BOT-BC48395  Ceanothus cuneatus var. cuneatus A. D. E. Elmer 1903-3-1 4578 San Mateo Portola Comment
  JROH3517  Ceanothus cuneatus var. cuneatus Le Roy Abrams 1898-3-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SBBG32289  Ceanothus cuneatus var. dubius L. S. Rose 1964-3-23 64011 San Mateo Emerald Lake, W of Redwood City 121 Comment
  UCSB3900  Ceanothus foliosus var. foliosus Walker, Clifford 1954-4-20 San Mateo Road to Woodside Comment
  RSA130826  Ceanothus oliganthus W. R. Dudley 1902-5-17 s.n. San Mateo King Mountain rd. Comment
  POM282997  Ceanothus oliganthus var. sorediatus Lyman Benson 1937-7-25 8467 San Mateo Lake Searsville; Mt. range: Santa Cruz; Drainage area: San Francisco Bay. 122 Comment
  CAS-BOT-BC51237  Ceanothus papillosus David D. Keck 1932-5-11 1774 San Mateo East side of Kings Mountain, on Kings Mountain Road 502 Comment
  CAS-BOT-BC51242  Ceanothus papillosus J. I. McMurphy 1906-5-20 13 San Mateo Santa Cruz Peninsula - King's Mt. Santa Cruz Mts. 457 Comment
  CAS-BOT-BC51851  Ceanothus papillosus W. R. Dudley 1902-5-17 s.n. San Mateo Kings Mountain Road Comment
  LA45133  Ceanothus papillosus David D. Keck; 1932-5-11 1774 San Mateo E. side of Kings Mountain, on Kings Mountain Road 500.0 Comment
  POM223329  Ceanothus papillosus L. S. Rose 1935-5-3 35144 San Mateo Skyline Blvd, W of Saratoga. 732 Comment
  CAS-BOT-BC52276  Ceanothus thyrsiflorus Javier Penalosa 1963-3-9 2695 San Mateo Ravine 1/2 mi. east of 1314 ft. summit 304 Comment
  CAS-BOT-BC52277  Ceanothus thyrsiflorus Javier Penalosa 1963-3-9 2680 San Mateo Slopes southeast of 1314 ft. summit 381 Comment
  CAS-BOT-BC52281  Ceanothus thyrsiflorus Elizabeth McClintock 1966-5-1 s.n. San Mateo unspecified 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-BC52297  Ceanothus thyrsiflorus R. Bacigalupi 1922-3-1 s.n. San Mateo lagoon Arroyo de los Frijoles Comment
  CAS-BOT-BC52300  Ceanothus thyrsiflorus W. R. Dudley 1900-4-15 s.n. San Mateo Above Crystal Springs and Half Moon Bay road Comment
  CAS-BOT-BC52304  Ceanothus thyrsiflorus A. D. E. Elmer 1903-6-1 4603 San Mateo Lake San Andreas Comment
  RSA398961  Ceanothus thyrsiflorus Glenn A. Gorelick 1967-4-28 s.n. San Mateo San Bruno Mts, overlooking Daly City ner San Francisco Comment
  UC79917  Ceanothus thyrsiflorus Alice Eastwood April 1893 San Mateo San Bruno Range Comment
  SEINET12209977  Ceanothus thyrsiflorus Unknown 1932-1 8972 San Mateo Comment
  POM351492  Centaurea calcitrapa Edith A. Purer 1933-8-13 18173 San Mateo Near Belmont Comment
  CAS-BOT-BC277231  Centaurea solstitialis Ned Cahill 1974-7-14 351 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  JROH609  Centaurea solstitialis John Hunter Thomas 1984-9-6 23477 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC389675  Centaurium tenuiflorum Maryann Danielson 1969-7-17 s.n. San Mateo Huddart Park along road below residence Comment
  JEPS46942  Centaurium trichanthum J. B. Davy 1893-6-17 778 San Mateo Belmont Comment
  SEINET2030222 Image available Centromadia pungens L. S. Rose 1941-10-10 41464 San Mateo Fields along Bayshore Boulevard, San Mateo 3 Comment
  CAS-BOT-BC279328  Centromadia pungens subsp. pungens L. R. Abrams 1903-9-26 4017 San Mateo Menlo Park - border of SF Bay Comment
  OBI16134  Centromadia pungens subsp. pungens Lewis S. Rose 1965-9-20 65106 San Mateo Blurlingame, Trousdale Dr. & Calif dr. 9 Comment
  CAS-BOT-BC384961  Cerastium arvense Paul F. Covel 1937-4-15 580 San Mateo Hgwy sumt. Montara Mts. Comment
  CAS-BOT-BC388385  Cerastium glomeratum John H. Thomas 1964-4-30 10355 San Mateo San Bruno Mountain in northern part of county 396 Comment
  JROH1691  Cerastium glomeratum John H. Thomas 1968-3-17 14191 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3628  Cercocarpus betuloides var. betuloides John Hunter Thomas 1987-5-19 24297 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CHSC263  Chamaemelum nobile J. Turner 1930-5-2 San Mateo Moss Beach. Comment
  JROH1817  Chenopodium berlandieri var. sinuatum John Rawlings 2011-8-2 1100 San Mateo Jasper Ridge Biological Preserve, Stanford University. Dry bed of San Francisquito Creek near Dennis Martin site marker. 71 Comment
  RSA10407  Chenopodium murale C. B. Wolf 1927-6-15 2167 San Mateo Along Skyline Drive, 8 mi. S of San Francisco. Comment
  RSA478562  Chenopodium rubrum L. M. Booth 1932-10-29 2116 San Mateo s. San Francisco. 5 Comment
  JROH1827  Chenopodium vulvaria Ann Lambrecht 2005-8-1 17 San Mateo Jasper Ridge Biological Preserve, Stanford University; Bear Creek crossing, east bank, about 2m from stream's edge Comment
  CAS-BOT-BC497722  Chlorogalum pomeridianum Cherie Wetzel 1969-6-20 868 San Mateo Serpentine near Canada College, Redwood City, just off of Farm Hill Blvd Comment
  CAS-BOT-BC497729  Chlorogalum pomeridianum Elizabeth McClintock 1965-3-28 s.n. San Mateo Plants of San Bruno Mountain, Trillium Gulch Comment
  SEINET12044203  Chlorogalum pomeridianum L. S. Rose 1934-1 34256 San Mateo Crystal Springs Lake Comment
  JROH4647  Chlorogalum pomeridianum var. pomeridianum John H. Thomas 1974-6-27 17454 San Mateo Jasper Ridge Biological Preserve, Stanford University; near the low flow crossing below Searsville Dam Comment
  RSA0105084  Chlorogalum purpureum T. B. Salvato, Lia V. D. Mansfield, Joel-Henry J. Mansfield 2008-6-14 3519 San Mateo Central Coast: Pebble Beach State Beach Bay, 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
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Aug 30 2018
  CAS-BOT-BC191596  Chorizanthe cuspidata var. cuspidata Elizabeth McClintock; Paul Reeberg 1988-6-7 s.n. San Mateo lower Colma Canyon. San Bruno Mountains 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
  CAS-BOT-BC389727  Chrysolepis chrysophylla M. K. Wicksten 1971-7-12 63 San Mateo Huddart Pk. Comment
  UCSB1025  Chrysolepis chrysophylla Muller, Cornelius 1951-1-28 San Mateo South of Pescadero Comment
  UC1135216  Chrysolepis chrysophylla var. minor C. M. Belshaw 1935-1-25 1468 San Mateo 2.5 mi nw Sierra Moreno Peak; Santa Cruz Quad. 457 Comment
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Oct 3 2011
  SD38231  Chrysolepis sempervirens Edith A. Purer 1932-7-18 4001 San Mateo King Mountain Comment
  RSA187410  Cicendia quadrangularis John H. Thomas 1966-4-2 11545 San Mateo Jasper Ridge Biological Experimental Area, about five miles southwest of Palo Alto. Along road at the Searsville end. Comment
  CAS-BOT-BC277890  Cirsium brevistylum A. D. E. Elmer 1903-6-1 4277 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC277895  Cirsium brevistylum A. D. E. Elmer 1903-6-1 4277 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC277891  Cirsium brevistylum Peter H. Raven 1957-6-24 968 San Mateo 0.6 miles s. of San Gregorio Beach Comment
  POM202467  Cirsium brevistylum L. S. Rose 1933-6-9 33216 San Mateo 3 miles W of San Bruno. Comment
  CAS-BOT-BC100937  Cirsium fontinale var. fontinale H. K. Sharsmith 1937-6-3 3951 San Mateo near road which connects Skyline Boulevard with road to Belmont. About 3 miles west of San Mateo, Crystal Springs Lake 152 Comment
  UC30807  Cirsium fontinale var. fontinale Alice Eastwood 1897-6-1 San Mateo Crystal Springs Comment
  UC894974  Cirsium fontinale var. fontinale John Thomas Howell 1939-6-16 14743 San Mateo Crystal Springs Lake Crystal Springs Lake (along brooklet) Comment
  SEINET5506212  Cirsium fontinale var. fontinale Lewis S. Rose San Mateo Comment
  JROH630  Cirsium occidentale var. occidentale John Hunter Thomas 1979-6-12 19590 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam near "old" low-flow crossing Comment
  UC614959  Cirsium occidentale var. venustum Beryl O. Schreiber 1932-5-29 312 San Mateo Crystal Springs Comment
  RSA34005  Cirsium occidentale var. venustum J. Wendell Howe 1930-5-21 s.n. San Mateo Hillside near Alpine Creek Comment
  CDA1534  Cirsium quercetorum T. C. Fuller 1971-6-1 19882 San Mateo Crystal Springs Reservoir E shore, 0.3 mi. SE of center causeway; Belmont. Comment
  JEPS89476  Cirsium quercetorum Dean W. Taylor 1989-8-1 10416 San Mateo Montara State Beach along Highway 1 at junction with road to North Peak of Montara Mountain Montara State Beach; Santa Cruz Mountains, , Hwy 1 67 Comment
  CAS-BOT-BC280514  Cirsium quercetorum Javier Penalosa 1963-3-30 2703 San Mateo San Bruno Mountain. North of Randolph Ave. at Hillside Blvd. in SSF 91 Comment
  CAS-BOT-BC280517  Cirsium quercetorum John Thomas Howell 1939-6-16 14740 San Mateo Near San Andreas Lake Comment
  UC2049888  Clarkia amoena subsp. amoena H. W. Johansen 1958-6-21 135 San Mateo Alpine road. Comment
  SEINET4900270  Clarkia cylindrica Paul D. Sorensen 1973-8-3 7337 San Mateo 1 mile W of junction with Page Mill Rd. and California 35 Comment
  CAS-BOT-BC164315  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-BC163973  Clarkia purpurea subsp. quadrivulnera Margaret A. Barry 1937-5-15 145 San Mateo Exposed slopes on Coal Mine Ridge Comment
  CAS-BOT-BC163963  Clarkia purpurea subsp. quadrivulnera W. R. Dudley 1903-6-6 s.n. San Mateo Alpine Road, Black Mt., Santa Cruz Range Comment
  CAS-BOT-BC164562  Clarkia purpurea subsp. viminea H. L. Mason 1921-7-3 s.n. San Mateo Pescadero - La Honda Road Comment
  CAS-BOT-BC164569  Clarkia purpurea subsp. viminea W. R. Dudley 1905-6-18 s.n. San Mateo Field near Iverson's Place naer Peter's Creek Comment
  JROH3008  Clarkia purpurea subsp. viminea Duncan M. Porter 1960-5-26 702 San Mateo Jasper Ridge Biological Preserve, Stanford University; N part of ridge, above Searsville Lake Comment
  CAS-BOT-BC165142  Clarkia rubicunda Alice Eastwood; John Thomas Howell 1938-6-26 6067 San Mateo Open ground avove La Honda Comment
  CAS-BOT-BC165149  Clarkia rubicunda Walter Knight; Walter Knight 1963-6-24 s.n. San Mateo Quarry 4 Comment
  JEPS29416  Clarkia rubicunda L. R. Heckard 1961-7-16 1263 San Mateo ne transmitting station KQED (near summit of mountain); San Bruno Mt. 335 Comment
  RSA6209  Clarkia rubicunda Carl B. Wolf 1932-7-25 3906 San Mateo Hills to the south of Emerald Lake, back of Redwood City 152 Comment
  UC1279951  Clarkia rubicunda Peter H. Raven 1957-6-30 11012 San Mateo near bridge Tunitas Creek (along State Highway 1) Comment
  RSA113615  Clarkia rubicunda Peter H. Raven 1957-7-6 11055 San Mateo Along Tunitas Creek 2.0 miles from junction with State Highway 1. Comment
  SEINET8726157 Image available Clarkia rubicunda Peter H. Raven 1957-1 10954 San Mateo State Highway 5 (Skyline Boulevard), 2.6 miles north of Redwood City turnoff, on serpentine. Comment
  POM271822  Clarkia rubicunda subsp. blasdalei Lyman Benson 1934-7-29 6114 San Mateo Moss Beach. Pcific Ocean watershed. 15 Comment
  POM32269  Clarkia rubicunda subsp. blasdalei E. B. Copeland 1903-6-17 3332 San Mateo Montara Point Comment
  RSA108438  Clarkia rubicunda subsp. blasdalei Harlan Lewis, M. Lewis 1951-6-28 859 San Mateo 1.8 mile south of Sharp Park. Comment
  RSA128518  Clarkia rubicunda subsp. blasdalei L. R. Abrams 1907-8-25 s.n. San Mateo Santa Cruz Mountain Peninsula: Between Pescadero and Half Moon Bay Comment
  CAS-BOT-BC165605  Clarkia unguiculata Kent E. Holsinger 1979-5-16 10 b San Mateo Jasper Ridge Biological Preserve; 5 mi. SW of Stanford Univ. campus, on south facing slope of Searsville Lake 109 Comment
  JROH3036  Clarkia unguiculata John Hunter Thomas 1982-7-3 21067 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC165600  Clarkia unguiculata Josephine D. Randall 1907-6-5 258 San Mateo Los Trancos Road near Stanford University Comment
  JROH5567  Claytonia parviflora subsp. parviflora John Rawlings 2013-4-13 1176 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near base of scree slope in old quarry off of Trail 12 111 Comment
  CAS-BOT-BC439591  Claytonia parviflora subsp. parviflora John H. Thomas 1963-5-20 10097 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz. Comment
  CAS-BOT-BC439595  Claytonia parviflora subsp. parviflora E. McClintock; Phillip Wheeler 1965-5-23 s.n. San Mateo San Bruno Mountain. Slope below Nike station. Comment
  SEINET5544279  Claytonia perfoliata H. S. Gentry 1931-1 12 San Mateo Collected 1.5 miles W of San Mateo, Half-Moon Bay Road. Comment
  CAS-BOT-BC439988  Claytonia perfoliata subsp. mexicana Elizabeth McClintock 1965-3-21 s.n. San Mateo San Bruno Mountain. Summit east of Brisbane Power Line Comment
  RSA276897  Claytonia perfoliata subsp. mexicana J. M. Miller 1977-3-23 590 San Mateo Purisimo Canyon, 1.4 miles E of Hwy 1 on Purisimo Canyon Road. Comment
  CAS-BOT-BC443659  Claytonia perfoliata subsp. perfoliata Josephine D. Randall 1907-6-29 295 San Mateo Santa Cruz Peninsula. Kings Mt. Road. Comment
  JROH5686  Clematis lasiantha John Rawlings 2015-3-3 1310 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail 9. 194 Comment
  RSA18269  Clematis lasiantha Carl B. Wolf 1927-6-27 454 San Mateo 2 miles back of Stanford University. Comment
  SEINET12099148  Clematis lasiantha Unknown 1906-1 19 San Mateo Fl Woodside, Santa Cruz Mts Comment
  SEINET12099156  Clematis ligusticifolia Unknown 1931-1 7796 San Mateo Jaspan Ridge, common Comment
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May 3 2019
  JROH2876  Clinopodium douglasii D. E. Breedlove 1971-5-31 19366 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  CAS-BOT-BC389745  Clinopodium douglasii M. Danielson 1965-5-15 s.n. San Mateo Western extension of Edgewood Road - Redwood City Comment
  HSC23891  Clinopodium douglasii Mary Katherine Wicksten 1971-6-16 33 San Mateo Bank at Huddart Park, by Werder Flat Comment
  POM196565  Clintonia andrewsiana W. R. Dudley 1895-6-6 s.n. San Mateo Pescadero Creek near Iverson. Comment
  SEINET12046246  Clintonia andrewsiana W. R. Dudley 1893-1 s.n. San Mateo Santa Cruz Penninsula, between Woodside and Summit Springs Comment
  POM15684  Collinsia heterophylla A. D. E. Elmer 1903-04 5046 San Mateo Lake Merced Comment
  CAS-BOT-BC240927  Collinsia multicolor Robert F. Hoover 1941-4-23 4901 San Mateo San Mateo Creek below Crystal Springs Dam Comment
  UC1736305  Collinsia multicolor Dean W. Taylor 1994-5-10 14276 San Mateo San Mateo Creek drainage; along Crystal Springs Road 0.3 mi East of junction of Tartan Trail Comment
  UC26610  Collinsia multicolor J. Burtt Davy 1895-4-20 1025 San Mateo Millbrae Comment
  UC676737  Collinsia multicolor Reed C. Rollins 1941-3-22 2953 San Mateo 2 mi se of Daly City (San Bruno Hills); San Bruno Hills Comment
  RSA681681  Comarostaphylis diversifolia subsp. diversifolia Annuschka Deb 1989-8-18 379 San Mateo Woodside. Comment
  JROH206  Conium maculatum John H. Thomas 1964-7-3 10442 San Mateo Jasper Ridge Biological Preserve, Stanford University; along road above Searsville Lake Comment
  POM132669  Conium maculatum A. D. E. Elmer 1903-07 4957 San Mateo San Mateo Comment
  RSA0059776  Convolvulus subacaulis Alice Eastwood 1933-5-14 18851 San Mateo Woodside, woods near the Shilling place. Comment
  SEINET3407326 Image available Convolvulus subacaulis Lewis S. Rose 1932-5-13 32248 A San Mateo Open fields, woodside, San Mateo County, California. 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
  UC1080552  Corallorhiza maculata S. S. Tillett and I. Sternback 1956-6-25 546 San Mateo along ridge on border of Middleton property and Portola State Park (s side of road to park) 396 Comment
  JROH4765  Corallorhiza striata John Hunter Thomas 1985-4-25 23568 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM215943  Corallorhiza striata D. D. Keck 1933-6-24 2456 San Mateo La Honda Comment
  UCD138899  Corallorhiza striata K. L. Koch 1965-5-1 42 San Mateo on north side of Alpine Road, 1.4 miles from Portola Park turnoff. 426 Comment
  RSA17972  Cordylanthus pilosus subsp. pilosus Carl B. Wolf 1927-7-28 707 San Mateo Los Trancos Creek, 2 mi back of Stanford University. Comment
  POM72033  Cordylanthus rigidus subsp. rigidus Alice Eastwood 1896-9-6 s.n. San Mateo Crystal Springs. Comment
  CAS-BOT-BC101476  Corethrogyne filaginifolia David D. Keck 1932-5-25 1785 San Mateo East side of Crystal Springs Lake Comment
  CAS-BOT-BC101483  Corethrogyne filaginifolia George Oberlander 1950-4-3 863 San Mateo Grassland east of Lower Crystal Spr. Lake Comment
  JEPS30902  Corethrogyne filaginifolia J. H. Thomas 1958-6-11 7221 San Mateo about 4.3 mi due e of Belmont; Crystal Springs Reservoir 91 Comment
  POM57992  Corethrogyne filaginifolia var. californica C. F. Baker 1902-5-10 810 San Mateo Crystal Springs Lake. Comment
  RSA726759  Cornus glabrata Lyman Benson 1930-5-26 2133 San Mateo Stanford University, Lake Searsville 152 Comment
  CAS-BOT-BC210358  Cornus sericea Walter Knight; Irja Knight 1963-7-14 s.n. San Mateo San Bruno Mountain. Base of Quarry 2 Comment
  CAS-BOT-BC210359  Cornus sericea Elizabeth McClintock; Carlyn Halde; Walter Knight; Walter Knight 1963-6-23 s.n. San Mateo San Bruno Mountain. Lower part of Colma Canyon Comment
  JROH1877  Cornus sericea subsp. sericea John Hunter Thomas 1986-5-1 23987 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek near low flow crossing Comment
  JROH5668  Cortaderia selloana John Rawlings 2013-12-3 1242 San Mateo Jasper Ridge Biological Preserve, Stanford University; west side of the Corte Madera Creek main channel, visible from Trail 13. 109 Comment
  CAS-BOT-BC180360  Corylus cornuta subsp. californica W. S. Atkinson 1901-7-3 s.n. San Mateo Pescadero. Santa Cruz Peninsula Comment
  CAS-BOT-BC180370  Corylus cornuta subsp. californica Ira L. Wiggins 1925-4-1 1649 San Mateo On Kings Mountain Road 3/4 of a mile above Woodside Comment
  HSC3476  Corylus cornuta subsp. californica C. B. Wolf 1927-2-26 223 San Mateo On the La Honda Grade Comment
  UCD110079  Corylus cornuta subsp. californica Baki Kasapligil 1967-7-18 4171 San Mateo Colma Canyon, San Bruno Mt. 30 Comment
  RSA15260  Corylus cornuta var. californica C. B. Wolf 1927-2-26 223 San Mateo Near the road on the La Honda Grade. Comment
  CAS-BOT-BC287202  Cosmos bipinnatus Prof. W. R. Dudley 1894-3-28 s.n. San Mateo Santa Cruz Mt Peninsula.l Opposite Halfmoon Bay Comment
  JROH3642  Cotoneaster pannosus John Hunter Thomas 1983-4-28 21777 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near green shack Comment
  JROH3644  Cotoneaster pannosus John Hunter Thomas 1983-6-2 22329 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC287308  Cotula australis Peter H. Raven 1951-2-8 2731 San Mateo Summit ridge, San Bruno Mts Comment
  JROH663  Cotula coronopifolia John Hunter Thomas 1982-11-6 21198 San Mateo Jasper Ridge Biological Preserve, Stanford University; along edge of Searsville Lake delta Comment
  CAS-BOT-BC291463  Cotula coronopifolia Catherine A. Toschi 1963-2-23 63 :33 San Mateo North slope San Bruno Mountains above Crocker Avenue 152 Comment
  CAS-BOT-BC291473  Cotula coronopifolia George Oberlander 1950-5-6 933 San Mateo Marsh, north boundary, San Francisco Watershed Reserve Comment
  UC1119273  Cotula coronopifolia G. E. Sindel 1935-7-25 313 San Mateo mouth Pescadero Creek Comment
  OBI20232  Crassula aquatica Rimo Bacigalupi, G. T. Robbins 1954-6-18 4561 San Mateo At Point Ano Nuevo Comment
  CAS-BOT-BC427833  Crassula connata John H. Thomas 1965-4-29 10630 San Mateo San Bruno Mountain in northern part of county. 396 Comment
  CAS-BOT-BC427840  Crassula connata Margaret A. Barry 1937-5-15 129 San Mateo Coal Mine Ridge. Comment
  CAS-BOT-BC427841  Crassula connata George Oberlander 1950-4-16 703 San Mateo San Francisco Watershed Reserve. San Andreas Valley Comment
  UCSC007735  Crassula connata Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  JROH3652  Crataegus monogyna John H. Thomas 1965-4-10 10560 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1838  Crocanthemum scoparium John H. Thomas 1977-5-4 18600 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4995  Crypsis schoenoides John Hunter Thomas 1988-10-17 24598 San Mateo Jasper Ridge Biological Preserve, Stanford University; on delta in lake Comment
  JROH1360  Cryptantha flaccida John H. Thomas 1975-5-26 17898 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1363  Cryptantha micromeres Paul R. Hichborn 1920-5-31 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; ridge near Searsville Lake 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
  JROH1388  Cryptantha torreyana var. pumila John Rawlings 2012-5-23 1109 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along Trail 10 in Chaparral bare zone. 153 Comment
  RSA735619  Cupressus abramsiana subsp. butanoensis John Silba 2004-12-28 B- 421 San Mateo Pescadero County Park, on Butano Ridge, ca. 5 miles east of Dearborn Park Road. 427 Comment
  SEINET3863390 Image available Cupressus macrocarpa K. Allred 1975-1-3 1270 San Mateo Half Moon Bay along Hwy 101 near Dune Beach.; 0 Comment
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Oct 30 2021
  RSA140852  Cupressus macrocarpa John H. Thomas 1960-8-28 8832 San Mateo Near Skyline Blvd. and Summit Dr. to the west of Hillsborough. Comment
  CAS-BOT-BC287326  Cynara cardunculus J. H. Thomas 1958-10-21 7487 San Mateo Near intersection of Bayshore Highway and Main St, Redwood City, near slough Comment
  CAS-BOT-BC190209  Cynodon dactylon Ira L. Wiggins 1980-8-29 22257 San Mateo Gravelly bed of San Francisquito Creek, ca. 75 m upstream from Pope Street bridge, Menlo Park. Comment
  JROH5005  Cynodon dactylon John Hunter Thomas 1987-5-26 24313 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA130387  Cynoglossum grande A. M. Patterson 1907-4-27 s.n. San Mateo Kings Mt. Santa Cruz Peninsula. Comment
  RSA130416  Cynoglossum grande Josephine Randall 1908-2-16 s.n. San Mateo Corte de Madera Canyon near Alpine Road. Comment
  SEINET191755  Cynoglossum grande R. C. Foster 1937-4-30 245 San Mateo Along Skyline Blvd just N of road to La Honda Comment
  JROH5902  Cynoglossum grande L. Nordby 1982-4-22 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; east side of Searsville Lake below Rattlesnake rocks Comment
  JROH4379  Cyperus eragrostis John Hunter Thomas 1978-5-23 19224 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4388  Cyperus eragrostis John H. Thomas 1973-6-15 16831 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1100540  Cyperus eragrostis Malcolm A. Nobs and S. Galen Smith 1949-8-16 1586 San Mateo ca. 1 mi. s. Half Moon Bay Comment
  CAS-BOT-BC114460  Cyperus eragrostis Jane Reese 1966-6-11 123 San Mateo Whiskey hill road, 1 mi from Junction with Woodside road. 152 Comment
  CAS-BOT-BC114461  Cyperus eragrostis George Thomas Oberlander 1949-7-24 318 San Mateo Marsh, Lower Crystal Spr. Lake. 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
  RSA184845  Cyperus eragrostis L. S. Rose 1965-9-20 65107 San Mateo Burlingame, Trousdale Dr. and California Dr. 9 Comment
  SEINET7581670 Image available Cyperus eragrostis Lewis S. Rose 1965-9-20 65107 San Mateo Trousdale Dr & California Dr. 9 Comment
  CAS-BOT-BC198191  Cytisus scoparius George Oberlander 1950-4-23 878 San Mateo San Andreas Valley, San Francisco Watershed Reserve Comment
  CAS-BOT-BC198195  Cytisus scoparius Phillip C. Wheeler 1965-4-27 s.n. San Mateo Brisbane, San Bruno Mountain Comment
  SD37828  Cytisus scoparius Marie Cummings 1933-5-23 3666 San Mateo La Honda Comment
  JROH5031  Dactylis glomerata W. Lennihan 1989-5-22 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Across dam, down trail to meadow, turn left -- all along road before bridge over creek. Comment
  RSA101030  Dactylis glomerata G. Oberlander 1950-5-21 960 San Mateo Under Douglas fir, Cahill Ridge, San Francisco Watershed Reserve Comment
  CAS-BOT-BC192242  Danthonia californica Ned Cahill 1974-5-30 322 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  SJSU10402  Danthonia californica E. C. Garbett 1960-5-1 120 San Mateo Georgia Lane c. 1 mi E of Portola Rd, Portola Valley Comment
  SJSU15903  Danthonia californica John Rawlings, Sara Timby, Toni Corelli 2016-4-23 1728 San Mateo Bean Hollow bluff trail, west of Hwy 1 south of Pescadero 8 Comment
  SJSU15419  Datura stramonium Toni Corelli 2011-8-31 718 San Mateo Half Moon Bay east of of Hwy. 1 and south of Higgins Canyon Road 30 Comment
  UCD127385  Daucus carota Rimo Bacigalupi; G. Thomas Robbins 1955-8-4 5444 San Mateo along grade on Highway No. 1, just south of Pedro Valley. Comment
  JROH234  Daucus pusillus John Hunter Thomas 1992-4-29 25171 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSC007739  Daucus pusillus Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  SD30844  Deinandra corymbosa Edith A. Purer 1933-5-31 3662 San Mateo Spring Valley Lakes. Comment
  UC222682  Deinandra corymbosa H. M. Hall 1915-8-28 10112 San Mateo north of San Bruno Comment
  CAS-BOT-BC299188  Deinandra corymbosa subsp. corymbosa A. D. E. Elmer 1903-7-1 4963 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC299203  Deinandra corymbosa subsp. corymbosa James I. McMurphy 1909-5-25 s.n. San Mateo Half Moon Bay Comment
  CAS-BOT-BC299219  Deinandra corymbosa subsp. corymbosa J McMurphy 1909-6-13 s.n. San Mateo San Bruno Hills Comment
  CAS-BOT-BC299212  Deinandra corymbosa subsp. corymbosa R. F. Hoover 1966-8-27 9942 San Mateo Half Moon Bay Comment
  CAS-BOT-BC299230  Deinandra corymbosa subsp. corymbosa David D. Keck 1931-10-5 1295 San Mateo Skyline Boulevard, summit of Cahill Ridge, 1.5 miles south of Half Moon Bay Road 450 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
  UC9238  Delphinium Alice Eastwood May 1896 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-BC9223  Delphinium californicum J. H. Thomas 1961-5-7 9279 San Mateo San Bruno Mountain in northern part of county 396 Comment
  UC311529  Delphinium californicum A. D. E. Elmer July 1903 4548 San Mateo Pilarcitos Stone Dam Comment
  CAS-BOT-BC9210  Delphinium californicum subsp. californicum Elizabeth McClintock 1965-6-13 s.n. San Mateo Colma Canyon, San Bruno Mountains Comment
  JROH3431  Delphinium californicum subsp. californicum John H. Thomas 1971-5-30 15974 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC9248  Delphinium decorum Elizabeth McClintock 1972-4-23 s.n. San Mateo San Bruno Mountains, above Fern Rock Comment
  CAS-BOT-BC10289  Delphinium hesperium J. H. Thomas 1949-5-29 564 San Mateo Alpine Road, about 1 mile beyond intersection with Mt. Home Road, going west Comment
  RSA122777  Delphinium hesperium N. K. Carlson 1935-6-29 107 San Mateo San Mateo: 1 mile S of Pescadero, Santa Cruz. 91 Comment
  JROH3443  Delphinium hesperium subsp. hesperium John H. Thomas 1974-5-29 17396 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3446  Delphinium hesperium subsp. hesperium John Hunter Thomas 1977-6-16 18775 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3450  Delphinium hesperium subsp. hesperium John Rawlings, Carol Zabel, Ann Lambrecht 2005-5-25 1004 San Mateo Jasper Ridge Biological Preserve, Stanford University. In and along Road F in Area H serpentine grassland. 166 Comment
  POM270648  Delphinium patens Arthur L. Cohen 1935-4-21 606 San Mateo Jasper Ridge, Stanford University. Santa Cruz Mtn Range, San Francisco Bay Watershed. 152 Comment
  CAS-BOT-BC116526  Delphinium patens subsp. patens C. B. Wolf 1929-4-26 3659 San Mateo Woodside Comment
  JROH3453  Delphinium patens subsp. patens John H. Thomas 1975-4-5 17711 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM177524  Delphinium variegatum W. R. Dudley 1896-4-4 s.n. San Mateo Near Crystal Springs Lake Comment
  CAS-BOT-BC7888  Delphinium variegatum LeRoy Abrams 1902-5-4 2410 San Mateo not specified Comment
  SEINET12086776  Delphinium variegatum L. S. Rose 1932-1 32138 San Mateo Redwood City Comment
  UC118662  Delphinium variegatum subsp. variegatum Alice Eastwood 1896-4-1 San Mateo Crystal Springs Comment
  POM202455  Delphinium variegatum subsp. variegatum L. S. Rose 1933-4-30 33125 San Mateo Redwood City Comment
  UCD166056  Dendromecon rigida Jack Major; M. Forde and S. Bamberg 1962-4-3 730 San Mateo Ano Nuevo Point. (Exact location unknown. Coordinates estimated by label maker). Comment
Read comments
Oct 15 2021
  CAS-BOT-BC631  Dendromecon rigida subsp. rigida Oliver Norvell 1931-3-2 1396 San Mateo La Honda Grade. Comment
  CAS-BOT-BC633  Dendromecon rigida subsp. rigida Ira L. Wiggins 1925-5-24 1747 San Mateo Grade between Woodside and La Honda. Comment
  CAS-BOT-BC192602  Deschampsia cespitosa subsp. holciformis Dr. E. B. Copeland 1903-6-10 3305 San Mateo Montara Point Comment
  JROH5046  Deschampsia danthonioides John H. Thomas 1957-4-16 6654 B San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5053  Deschampsia danthonioides John Hunter Thomas 1989-5-3 24653 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC201909  Deschampsia elongata H. L. Mason 1921-5-29 s.n. San Mateo Arroyo de los Frijoles Comment
  CAS-BOT-BC201913  Deschampsia elongata George Oberlander 1950-4-23 917 San Mateo North Cahill Ridge Comment
  POM207175  Deschampsia holciformis E. B. Copeland 1903-6-10 3305 San Mateo Montara Point. Comment
  CAS-BOT-BC500893  Dichelostemma capitatum Fred Hemphill 1973-5-6 777 San Mateo San Carlos, Chaparral area north of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC500929  Dichelostemma capitatum John H. Thomas 1971-5-2 15849 San Mateo Near the intersection of Canada and Edgewood roads, about 4 mi SW of center of Redwood City 304 Comment
  SEINET10533994  Dichelostemma capitatum Kimber 1918-4-25 KIMBER s.n. San Mateo Plants of the Santa Cruz Mountain Peninsula. Jasper Ridge. Serpentine. Comment
  JEPS127848  Dichelostemma capitatum subsp. capitatum Adam C. Schneider 2013-4-7 86 San Mateo Comment
  JROH4657  Dichelostemma capitatum subsp. capitatum John H. Thomas 1974-4-13 17148 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM169432  Dichelostemma capitatum subsp. capitatum C. F. Baker 1902-5-4 761 San Mateo Woodside. Comment
  SD39077  Dichelostemma capitatum subsp. capitatum Marie Cummings 1933-4-11 8 San Mateo Spring Valley Lake. Comment
  RSA3928  Dichelostemma capitatum subsp. capitatum Harry A. Dutton 1900-3-25 s.n. San Mateo The Santa Cruz Peninsula Comment
  CAS-BOT-BC209018  Digitaria sanguinalis Lewis S. Rose 1965-9-20 65108 San Mateo Trousdale Dr. & California Dr., Burlingame 9 Comment
  CAS-BOT-BC150457  Diplacus aurantiacus Viola Nichols 1911-5-6 1006 San Mateo Belmont, 2nd hill Comment
  CAS-BOT-BC150463  Diplacus aurantiacus Carl B. Wolf 1930-11-5 1804 San Mateo Half way up east side of La Honda Grade, Santa Cruz Mtns. 304 Comment
  CAS-BOT-BC150454  Diplacus aurantiacus Daniel Cohen 1953-5-9 89 San Mateo La Honda Road 1/2 way to Skyline Drive on the east slope of the Santa Cruz Mountains Comment
  SD4648  Diplacus aurantiacus Ulysses S. Grant June 1925 San Mateo Hillsborough Comment
  CAS-BOT-BC151991  Diplacus douglasii W. R. Dudley 1900-3-26 s.n. San Mateo Beyond Woodside, half way up the Mt. - Santa Cruz Peninsula Comment
  CDA6697  Dipsacus sativus T. C. Fuller 1960-4-2 4066 San Mateo Crystal Springs Reservoir, road to Half Moon Bay. 0 Comment
  JROH1911  Dipsacus sativus John H. Thomas 1975-5-2 17855 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS96866  Dirca occidentalis Dean W. Taylor 1972-2-27 1335 San Mateo near San Andreas Lake 743 Comment
Read comments
Jun 8 2011
  RSA130910  Dirca occidentalis E. K. Balls 1958-7-22 23593 San Mateo North end of Searsville Lake 183 Comment
  RSA18298  Dirca occidentalis Carl B. Wolf 1927-5-31 418 San Mateo Searsville Lake Comment
  SEINET3821107 Image available Dirca occidentalis Lewis S. Rose 1933-6-9 33222 San Mateo San Andreas Lake. Comment
  UC518034  Dirca occidentalis Lewis S. Rose 1933-6-9 33222 San Mateo San Andreas Lake Comment
  POM134412  Dirca occidentalis Stewart H. Burnham 1894-2-3 s.n. San Mateo Redwood Forest, outer coast range Comment
  CDA39312  Disporum hookeri T. C. Fuller 1960-4-2 4079 San Mateo La Honda Rd., 1 mile north of La Honda. 0 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
  CAS-BOT-BC195720  Distichlis spicata Dr. Barton W. Evermann 1924-6-22 s.n. San Mateo Ano [Ano] Nuevo Island Comment
  UCD64379  Distichlis spicata var. stolonifera A. A. Beetle 1942-10-1 1888 San Mateo Near San Mateo, borders of San Francisco Bay. Comment
  JROH3376  Dodecatheon clevelandii subsp. patulum Ellen Searby 1955-4-1 78 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC105762  Dodecatheon clevelandii subsp. patulum Brandegee Apr 1889 San Mateo San Mateo Comment
  JROH3385  Dodecatheon hendersonii John H. Thomas 1968-3-17 14179 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS9541  Dodecatheon hendersonii Ivar Tidestrom 1894-3-22 San Mateo Comment
  POM287492  Dodecatheon hendersonii subsp. cruciatum Lyman Benson 1931-2-28 2609 San Mateo Town: Woodside; Mt. Range: Santa Cruz; River: San Francisquito Cr. 183 Comment
  RSA112451  Drymocallis glandulosa H. A. Borthwick 1920-4-28 101 San Mateo Portola Valley Comment
  POM267960  Drymocallis glandulosa var. wrangelliana Jens Clausen 1941-7-1 1872 San Mateo Summit of Montara Mtn 274 Comment
  JROH33  Dryopteris arguta John H. Thomas 1976-11-5 18433 San Mateo Jasper Ridge Biological Preserve, Stanford University. Below dam Comment
  UC766794  Dryopteris arguta R. F. Hoover 1941-2-12 4762 San Mateo nw of Summit Saratoga Comment
  CAS-BOT-BC67890  Dryopteris arguta W. R. Dudley 1905-6-19 s.n. San Mateo Santa Cruz Peninsula, Santa Cruz Mountains - by road near top of New Grade road to Black Mt. Comment
  CAS-BOT-BC67894  Dryopteris arguta G. Edelbrock 1975-2-8 003 San Mateo SF watershed - Along roadcut at Stone Dam below Pilarcitos Lake 121 Comment
  RSA11000  Dryopteris arguta C. B. Wolf 1928-3-14 1537 San Mateo La Honda grade in the Santa Cruz Mountains 152 Comment
  SEINET10530141  Dryopteris arguta Mary Susan Taylor 1978-8-30 Taylor 1861 San Mateo Comment
  CAS-BOT-BC410869  Dudleya caespitosa Reid Moran 1951-7-3 3499 San Mateo Devils Slide, 2 miles north of Montara Comment
  CAS-BOT-BC410872  Dudleya caespitosa K. Nakai 1979-10-1 529 San Mateo Devils Slide on west facing granite slope along Calif. Hwy 1. Comment
  CAS-BOT-BC109694  Dudleya farinosa Ira L. Wiggins 1929-7-14 3805 San Mateo Bluffs above Pescadero sand Beach. Comment
  JROH5087  Echinochloa crus-galli John H. Thomas 1976-10-16 18416 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 fireplace ruins downstream. Comment
  JROH4304  Echinodorus berteroi John H. Thomas 1964-11-15 10523 San Mateo Jasper Ridge Biological Preserve, Stanford University; now dry lake margin at east end of Searsville Dam Comment
  JROH5100  Ehrharta erecta Toni Corelli 2006-8-16 322 San Mateo Jasper Ridge Biological Preserve, Stanford University. South of Road B, dry creek bed below Dennis Martin marker site 70 Comment
  CAS-BOT-BC112959  Eleocharis macrostachya Adolph Daniel Edward Elmer 1903-7-1 4767 San Mateo San Pedro. Comment
  CAS-BOT-BC112952  Eleocharis macrostachya Roxana S. Ferris 1920-9-3 2041 San Mateo Upper Mud Lake, Coalmine Ridge. Comment
  CAS-BOT-BC113322  Eleocharis montevidensis Lewis Samuel Rose 1950-5-20 50146 San Mateo Emerald Lake region, hills of Redwood City 243 Comment
  RSA176541  Elymus X gouldii John H. Thomas 1963-6-23 10159 San Mateo Along Alpine Road near Ladera Comment
  POM352566  Elymus californicus P. H. Raven 1967-6-25 21418 San Mateo Pescadero Road 2.8 miles SW of Alpine Road. Comment
  RSA101019  Elymus glaucus G. Oberlander 1950-5-6 931 San Mateo Pilarcitos Lake. San Francisco Watershed Reserve. Comment
  CAS-BOT-BC203679  Elymus glaucus subsp. glaucus Walter Knight; Irja Knight 1965-5-15 s.n. San Mateo San Bruno Mountain. Bitter Cherry Ravine Comment
  JROH5103  Elymus glaucus subsp. glaucus John H. Thomas 1971-5-30 15979 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5106  Elymus glaucus subsp. glaucus John H. Thomas 1975-5-26 17919 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
  UCSC007753  Elymus mollis subsp. mollis Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC235206  Elymus multisetus Ned Cahill 1974-5-30 316 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  JROH5117  Elymus multisetus John H. Thomas 1962-5-31 9897 San Mateo Jasper Ridge Biological Preserve, Stanford University. Grassland near Westridge end of ridge Comment
  UCR279842  Elymus repens Peter Rubtzoff 1977-6-21 9055 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
  SJSU15940  Elymus trachycaulus subsp. trachycaulus John Rawlings, Ken Hickman 2016-5-26 1816 A 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
  JROH3041  Epilobium brachycarpum John H. Thomas 1971-8-7 16019 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  HSC23933  Epilobium brachycarpum Mary Katherine Wicksten 1971-8-19 201 San Mateo Huddart Park, along road to Redwood Shelter area Comment
  OBI11877  Epilobium canum Lewis S. Rose 1965-9-4 65099 San Mateo Skyline Blvd and Half Moon Bay Rd. Cahill ridge 244 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
  RSA40475  Epilobium canum subsp. canum C. F. Leithold 1894-8-13 s.n. San Mateo Santa Cruz Mountain Peninsula: Devil s Canyon, branch of Pescadero and Mill Cr. Black Mt. Comment
  SJSU802  Epilobium canum subsp. canum M. B. Mirassou 1943-5-10 191 San Mateo near Pigeon Point Comment
  UCR121544  Epilobium ciliatum subsp. ciliatum George K. Helmkamp, E. A. Helmkamp 1999-6-28 4970 A San Mateo Coast Range; Santa Cruz Mtns, Sky Londa; junction of Calif. Hwy 84 and Calif. Hwy 35, 5 mi south of central Redwood City 457 Comment
  UCD105934  Epilobium ciliatum subsp. watsonii Malcolm A. Nobs; S. Galen Smith 1949-8-26 1585 San Mateo About 1 mile south of Half Moon Bay. Comment
  UCSC005987  Epipactis Randall Morgan 1995-6-28 2819 San Mateo Near Peters Creek just NW of Portola State Park Comment
  CAS-BOT-BC166768  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
  RSA785880  Equisetum arvense Peter Rubtzoff 1976-3-14 8444 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
  UCD164092  Equisetum arvense Peter Rubtzoff 1978-4-2 9153 San Mateo San Bruno Mountains.'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  CAS-BOT-BC57599  Equisetum telmateia Walter Knight; Irja Knight 1964-5-30 616 San Mateo Colma Creek Comment
  UCSB23419  Equisetum telmateia Masero, Ann 1967-3-21 San Mateo S side of Butano Creek, 3.7 mi E of junction of Cloverdale Road and Canyon Road in Butano Canyon. 131 Comment
  JROH70  Equisetum telmateia subsp. braunii John H. Thomas 1978-4-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC810416  Equisetum telmateia subsp. braunii L. R. Abrams 1904-3-7 6343 San Mateo near Lime Talls Bear Gulch Comment
  CHSC90173  Equisetum telmateia var. braunii Diane Mastalir 1988-3-27 4 San Mateo Near drainage ditch, 6.7 mi south of junction of Hwy 1 and Hwy 92, 1.7 mi east of Pescadero Road. 30 Comment
  SJSU15446  Eragrostis curvula John Rawlings 2009-5-1 1048 B San Mateo This ornamental grass appeared along a short stretch of San Hill Rd. at the entrance to the Horse Park at Woodside. 119 Comment
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Feb 18 2015
  JROH5145  Eragrostis mexicana subsp. virescens John Rawlings 2009-7-23 1027 San Mateo Jasper Ridge Biological Preserve, Stanford University. In the dry creek bed of San Francisquito Creek near the Dennis Martin site 71 Comment
  CAS-BOT-BC299890  Erechtites glomeratus John H. Thomas 1967-5-2 12805 San Mateo About 1/4 mile up Market Street from new school in canyon, San Bruno Mountain Comment
  CDA4552  Erechtites glomeratus J. Campbell 1958-4-18 322 -58 San Mateo 0 Comment
  SJSU14204  Eriastrum abramsii Toni Corelli 1989-4-25 202 San Mateo Edgewood County Park 219 Comment
  JROH690  Erigeron foliosus var. foliosus John H. Thomas 1971-5-30 15968 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SD234039  Erigeron glaucus Virginia Pinkus Ryder 1964-2-21 77 San Mateo 1 mile past Greyound Rock. 29 Comment
  CAS-BOT-BC300063  Erigeron philadelphicus Elizabeth McClintock; Philip Wheeler 1967-6-11 s.n. San Mateo San Bruno Mountain. To south of new Guadalupe Parkway just before it meets Radio Road Comment
  CAS-BOT-BC216130  Eriodictyon californicum Walter Knight; Irja Knight 1963-7-14 s.n. San Mateo Buckeye Canyon, San Bruno Mountain Comment
  SD38516  Eriodictyon californicum Marie Cummings 1933-5-23 3732 San Mateo La Honda Comment
  JROH5904  Eriodictyon californicum M. Ray 1982-5-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail, west side of Searsville Dam Comment
  CAS-BOT-BC253198  Eriogonum fasciculatum Lewis S. Rose 1941-9-21 41455 San Mateo Intersection of Alpine Creek Road and Skyline Blvd. 609 Comment
  CAS-BOT-BC253242  Eriogonum fasciculatum var. foliolosum Claire Etienne 1973-5-1 s.n. San Mateo Ca. 1 mi. north of Jtn. with Hwy. 84 (to Woodside) on Hwy. 280 Comment
  CAS-BOT-BC250544  Eriogonum gracile John H. Thomas 1969-10-19 15478 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  CAS-BOT-BC250547  Eriogonum gracile Cherie Wetzel 1969-6-20 872 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd. Comment
  UC429743  Eriogonum gracile L. R. Abrams 1902-9-21 2988 San Mateo Crystal Lake Comment
  POM165225  Eriogonum gracile var. gracile Edward L. Greene 1902-9-10 1675 San Mateo Crystal Springs Lake 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
  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
  RSA3885  Eriogonum latifolium I. L. Wiggins 1929-7-4 3797 San Mateo Pescadero Beach Comment
  UCR121581  Eriogonum latifolium George K. Helmkamp, E. A. Helmkamp 1999-6-28 4986 San Mateo Pescadero Creek Watershed, Pescadero Road just north of Loma Mar 107 Comment
  CAS-BOT-BC251969  Eriogonum latifolium Elizabeth McClintock; Paul Reeberg 1988-4-26 s.n. San Mateo at southern tip of ridge dividing Sage and Poison Oak Ravines 137 Comment
  RSA279684  Eriogonum luteolum James L. Reveal, John H. Thomas 1975-7-31 3911 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto, on oak covered hillsides south of San Francisquito Creek 183 Comment
  JEPS83607  Eriogonum luteolum var. luteolum Roy E. Buck, Randall A. Morgan 1984-6-17 504 San Mateo 5.7 km sw Redwood City (in area bounded by Hwy. I-280, Edgewood Rd., and Canada Rd.) 152 Comment
  JROH3225  Eriogonum luteolum var. luteolum Duncan M. Porter 1960-10-12 725 San Mateo Jasper Ridge Biological Preserve, Stanford University. Meadow at crest of Ridge above Webb Ranch (area H). Comment
  CAS-BOT-BC269008  Eriogonum nudum var. auriculatum Ned Cahill 1974-10-8 384 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  SD38941  Eriogonum nudum var. auriculatum Edith A. Purer 1933-8-25 5522 San Mateo Along roadside, Spring Valley Lakes Comment
  SEINET11938130  Eriogonum nudum var. auriculatum Unknown 1932-1 9110 San Mateo Btw road and Sring Valley Lakes Comment
  UCD100531  Eriogonum nudum var. auriculatum Marilyn Ivey 1973-5-30 67 San Mateo Farm Hill Blvd., 2 miles east of Canada College. Comment
  CAS-BOT-BC304068  Eriophyllum confertiflorum Evelina Cannon No date on label s.n. San Mateo Crystal Springs Comment
  CAS-BOT-BC304078  Eriophyllum confertiflorum Elizabeth McClintock 1978-4-24 s.n. San Mateo Gilmore McDowell property, Woodside Comment
  HSC23886  Eriophyllum confertiflorum Mary Katherine Wicksten 1971-7-2 150 San Mateo Huddart Park, near Mimwok area Comment
  JROH709  Eriophyllum confertiflorum var. confertiflorum John Hunter Thomas 1980-6-5 19996 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC301254  Eriophyllum lanatum var. arachnoideum W. R. Dudley 1902-5-17 s.n. San Mateo Santa Cruz Mountain Peninsula. Kings Mt. road 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-BC301263  Eriophyllum lanatum var. arachnoideum Josephine D. Randall 1907-6-29 68 San Mateo Santa Cruz Peninsula. Kings Mt. Road Comment
  CAS-BOT-BC301752  Eriophyllum latilobum S. Carlquist 1952-4-26 305 San Mateo On N. side of road to Half Moon Bay, 1 mi. e. of San Mateo Comment
  POM54247  Eriophyllum latilobum A. D. E. Elmer 1903-06 4397 San Mateo San Mateo Comment
  UC1377806  Eriophyllum latilobum W. J. Dress 1951-5-30 3274 San Mateo roadside bank in canyon sw of San Mateo Comment
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Mar 6 2006
  CAS-BOT-BC301980  Eriophyllum staechadifolium Elizabeth McClintock 1963-6-9 s.n. San Mateo San Bruno Mountain Comment
  POM358129  Eriophyllum staechadifolium E. A. Purer 1933-7-27 5395 San Mateo 2 miles south of Pigeon Point. Comment
  CAS-BOT-BC301981  Eriophyllum staechadifolium Ella Dales Cantelow 1940-9-2 3408 San Mateo N. of Davenport Comment
  JROH2605  Erodium cicutarium John H. Thomas 1977-4-19 18536 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET12182144  Erodium cicutarium Unknown 1930-1 7322 San Mateo Jaspar Ridge Comment
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Oct 31 2021
  CAS-BOT-BC41437  Eruca vesicaria subsp. sativa Elsie Z. Lovegrove 1948-2-22 s.n. San Mateo Coast road near Montara. Comment
  JROH235  Eryngium jepsonii A. G. Vestal 1926-6 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; summit of Jasper Ridge Comment
  CAS-BOT-BC54511  Erysimum capitatum G. B. Rossbach; R. P. Rossbach 1938-6-12 860 San Mateo Coast Range. La Honda grove. 121 Comment
  CAS-BOT-BC54818  Erysimum franciscanum H. E. Parks; S. T. Parks 1930-3-10 0401 San Mateo Spring Valley Lakes. Comment
  CAS-BOT-BC54821  Erysimum franciscanum Javier Penalosa 1963-3-9 2669 San Mateo San Bruno Mountains. Slopes southeast of 1314 foot summit. 381 Comment
  CAS-BOT-BC54825  Erysimum franciscanum Alice Eastwood 1913-2-22 2455 San Mateo San Bruno Hills. Comment
  CAS-BOT-BC54843  Erysimum franciscanum G. B. Rossbach; R. P. Rossbach 1938-4-3 806 San Mateo Crests and steep upper slopes of the San Bruno Hills. 365 Comment
  CAS-BOT-BC54852  Erysimum franciscanum G. B. Rossbach; R. P. Rossbach 1939-3-28 905 a fl. 905b fr. San Mateo San Mateo Creek, below Crystal Springs Lake. 60 Comment
  CAS-BOT-BC54861  Erysimum franciscanum G. B. Rossbach; R. P. Rossbach 1939-6-4 914 San Mateo Above southeast shore of Crystal Springs Lake, southwest base Pulgas Ridge. 91 Comment
  CAS-BOT-BC54865  Erysimum franciscanum G. B. Rossbach 1940-4-23 925 San Mateo About 1 mile inland, Montara Mountains, south of San Pedro Valley and northwest of Peak Mountain. 121 Comment
  POM176893  Erysimum franciscanum Roxana S. Ferris 1921-4-7 s.n. San Mateo San Bruno Mountains 183 Comment
  SJSU8507  Erysimum franciscanum P. F. Canziani 1979-3-2 San Mateo SW of intersection of Hillside Blvd & Chestnut Ave., San Bruno Mt Comment
  UC1034707  Erysimum franciscanum G. B. Rossbach 1955-3-26 577 San Mateo open rocky summit near radio tower (crest of mt); San Bruno Mountain 400 Comment
  UC1034936  Erysimum franciscanum G. B. and R. P. Rossbach 1939-5-12 913 San Mateo dunes just back of high sea-cliff 1 1/2 mi n Sharp Park (Salada Beach) Comment
  UC136024  Erysimum franciscanum Alice Eastwood 1903-2-8 3237 San Mateo Spring Valley Comment
  CAS-BOT-BC54831  Erysimum franciscanum W. R. Dudley 1906-5-13 s.n. San Mateo Santa Cruz Peninsula. Hills southwest of San Mateo. Comment
  PGM186  Erysimum franciscanum Vern Yadon 1968-4-5 San Mateo Pigeon Pt Lighthouse area Highway 1, Pigeon Pt Lighthouse just S of Comment
  JEPS51732  Eschscholzia californica Dr. L. M. Newlon 1921-1 246 San Mateo sea shore from Salada to Mussel Comment
  JROH3097  Eschscholzia californica Richard L. Garber 1971-5-11 7 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB11488  Eschscholzia californica Olson, Jim 1962-4-17 San Mateo 1 mile southeast of Halfmoon Bay on Halfmoon Bay to San Mateo Road 12 Comment
  POM272329  Eschscholzia californica subsp. californica Lyman Benson 1931-3-3 2621 San Mateo Moss Beach. 15 Comment
  CAS-BOT-BC202732  Euonymus occidentalis M. Bourell; R. Patterson 1994-4-3 5297 San Mateo At northeast end of Hazelnut Trail near Weiler Ranch Road Trail. San Pedro Valley County Park 60 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-BC206912  Euonymus occidentalis D. E. Breedlove 1974-5-13 36208 San Mateo Slopes of San Pedro Valley Park, Pacifica. 152 Comment
  CAS-BOT-BC389665  Euonymus occidentalis Jeff Mitchell 1971-7-1 159 San Mateo Memorial Park Comment
  JROH1796  Euonymus occidentalis var. occidentalis Volney Rattan May s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; at Searsville Comment
  UC1071565  Euonymus occidentalis var. occidentalis N. K. Carlson 1935-7-3 117 San Mateo 3 mi. s. Bellvale; Santa Cruz Quad. 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
  JROH1966  Euphorbia lathyris Carol Zabel and Ruth Porter 1999-5-17 41 b San Mateo Jasper Ridge Biological Preserve, Stanford University; north side of trail 12 Comment
  CDA19875  Euphorbia oblongata D. Pendleton 2002-5-24 PDR P 120140 San Mateo San Francisco Bay Area; N side of Westride Dr, 50 m E of Bolivar Ln, Portola Valley. 0 Comment
  JROH1979  Euphorbia spathulata John Hunter Thomas 1981-4-23 20471 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC310626  Eurybia radulina J. H. Thomas 1957-8-16 6823 A San Mateo Along Skyline Blvd., near entrance to Isenberg Ranch 518 Comment
  JROH5919  Eurybia radulina John Hunter Thomas 1981-5-25 20629 San Mateo Jasper Ridge Biological Preserve, Stanford University 88 Comment
  UC1536887  Eurybia radulina G. H. True Jr. 1937-7-31 829 San Mateo near, (Alpine Road near Skyline Blvd.) Skyline Blvd. 182 Comment
  CAS-BOT-BC310721  Euthamia occidentalis John H. Thomas 1968-10-6 14853 San Mateo Vicinity of railroad tracks and Dumbarton Bridge causeway entrance. East of Palo Alto Comment
  JROH5162  Festuca arundinacea John Hunter Thomas 1988-5-12 24457 San Mateo Jasper Ridge Biological Preserve, Stanford University; near bridge between the two parts of Searsville Lake Comment
  SJSU16063  Festuca arundinacea Toni Corelli 2009-9-22 446 San Mateo Ano Nuevo State Park, adjacent to Gazos Creek parking lot Comment
  JROH6209  Festuca bromoides John Rawlings 2013-3-31 1183 San Mateo Jasper Ridge Biological Preserve, Stanford University. Trail 2 at the Zoology Cabin foundation site. 75 Comment
  CAS-BOT-BC278285  Festuca californica James McMurphy 1906-5-20 s.n. San Mateo Road to Kings Mt. Comment
  JROH5177  Festuca californica John H. Thomas 1967-5-12 12866 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC278358  Festuca californica subsp. californica Javier Penalosa 1963-3-9 2664 San Mateo San Bruno Mountain. Slopes southeast of the summit (1314 ft.) 381 Comment
  CAS-BOT-BC278359  Festuca californica subsp. californica Walter Knight; Irja Knight 1964-5-4 s.n. San Mateo San Bruno Mountain. West slope of San Bruno Mountain Comment
  JROH5482  Festuca microstachys John H. Thomas 1964-4-5 10296 San Mateo Jasper Ridge Biological Preserve, Stanford University. Toward Searsville end of ridge. 152 Comment
  JROH5484  Festuca microstachys John H. Thomas 1967-5-12 12878 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5509  Festuca microstachys John Rawlings 2005-3-30 0901 San Mateo Jasper Ridge Biological Preserve, Stanford University. Growing around and in cracks of serpentine rock outcrops in north-facing serpentine grassland (Area H), uphill and west of the exclosure. 146 Comment
  SJSU15582  Festuca microstachys John Rawlings 2015-4-5 1453 San Mateo Along Edgewood Rd., San Mateo Co., California 146 Comment
  JROH5497  Festuca myuros John H. Thomas 1973-3-12 16498 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5501  Festuca myuros Stephen N. Turitzin 1975-5-7 3 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC278864  Festuca occidentalis W. R. Dudley 1895-6-6 s.n. San Mateo Santa Cruz Mountain Peninsula. Pescadero Creek near Iverson's Place Comment
  JROH5281  Festuca perennis John H. Thomas 1967-6-1 12956 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5290  Festuca perennis John Hunter Thomas 1987-5-15 24287 A San Mateo Jasper Ridge Biological Preserve, Stanford University. Near low flow crossing. Comment
  JROH5293  Festuca perennis John H. Thomas 1959-8-22 8086 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU16015  Festuca perennis John Rawlings, Ken Hickman 2016-5-26 1810 San Mateo Serpentine seep area (Fountain thistle seep) up-slope from the Hwy 92 west onramp to Hwy 280 north; down-slope from San Francisco Watershed fence line 122 Comment
  CAS-BOT-BC279054  Festuca rubra David 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
  JROH247  Foeniculum vulgare Toni Corelli 2005-8-1 297 San Mateo Jasper Ridge Biological Preserve, Stanford University; along road C, southwest of low flow crossing 82 Comment
  CAS-BOT-BC437038  Fragaria chiloensis Elizabeth McClintock 1965-3-28 s.n. San Mateo April Brook, San Bruno Mountain Comment
  JROH3665  Fragaria vesca W. R. Dudley 1898-4-15 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC859948  Fragaria vesca Lewis S. Rose 1933-6-23 33251 San Mateo Kings Mountain Comment
  CAS-BOT-BC52683  Frangula californica subsp. californica Walter Knight; Irja Knight 1965-5-15 1108 San Mateo Pig Ranch Ravine Comment
  CAS-BOT-BC211601  Frankenia salina John Hunter Thomas 1949-10-16 1142 San Mateo Along ocean bluff, just north of outlet of San Gregorio Creek 60 Comment
  CAS-BOT-BC211605  Frankenia salina Walter Knight; Irja Knight; Elizabeth McClintock 1964-9-11 751 San Mateo Pt. San Bruno, San Bruno Mountain Comment
  RSA22266  Frankenia salina L. S. Rose 1938-8-18 38230 San Mateo Brisbane 2 Comment
  SEINET6941833  Frankenia salina Robert A. Evers, Clara V. Evers 1975-8-24 115021 San Mateo Trailer Villa, Redwood City. Comment
  UC204065  Fraxinus latifolia A. D. E. Elmer Jul 1903 4615 San Mateo San Mateo Creek Comment
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Sep 4 2011
  UC143428  Fritillaria affinis C. F. Baker Mar 1903 5047 San Mateo Crystal Springs Lake Comment
  UC3641  Fritillaria affinis J. Burtt Davy 1895-4-20 1056 San Mateo Lake Pilarcitos Comment
  JROH4683  Fritillaria affinis John H. Thomas 1969-4-12 14893 San Mateo Jasper Ridge Biological Preserve, Stanford University. Oak woodland below dam Comment
  POM273485  Fritillaria affinis Lyman Benson 1930-4-27 2099 San Mateo Stanford University 122 Comment
  POM278026  Fritillaria affinis Lyman Benson 1930-5-1 2053 San Mateo Stanford University. San Lorenzo Mt. Range. 122 Comment
  RSA371591  Fritillaria affinis Thomas S. Elias 1987-4-10 10336 San Mateo Along Canyon Road, north of Butano State Park Comment
  UCD139717  Fritillaria affinis R. E. Dengler 1960-4-12 26 San Mateo Jasper Ridge, Stanford Biological Reserve. 129 Comment
  UCSB42578  Fritillaria affinis Nixon, E. 1980-4-3 San Mateo 1 mile down Sawyer Camp road, at Millbrae exit off of Fwy. 280 Comment
  RSA13540  Fritillaria liliacea H. E. Parks, S. T. Parks 1930-3-10 400 San Mateo Spring Valley Lakes Comment
  SDSU20659  Fritillaria liliacea Sean Ryan 2011-3-18 76 San Mateo 65 yds S of Point Reyes-Petaluma Rd. approx. 0.66 mi W of its intersection with Nicasio Valley Rd. Nicasio Reservoir. 65 Comment
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Sep 10 2014
  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
  UCD95125  Fumaria officinalis A. P. N. 1960-3-11 517 San Mateo Highway 1, south of Montara. Comment
  CAS-BOT-BC389733  Galium J. Lovelle 1973-8-5 37 San Mateo Mt. Ellen Trail Comment
  JROH3824  Galium John Hunter Thomas 1989-4-10 24626 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CDA28822  Galium aparine D. G. Kelch 2009-6-9 9 .401 San Mateo Santa Cruz Mts.; Chert outcrop and adjacent mixed evergreen forest along Skyline Blvd ~1 km W of Skegg s Point. Comment
  JROH3783  Galium aparine John Hunter Thomas 1980-5-1 19914 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD121717  Galium aparine Mary Lou Linvill 1972-5-16 14 San Mateo Coast Range; Mountain Home Road, 0.2 mile east of Mountain Wood Lane, Woodside. Comment
  POM284029  Galium californicum subsp. californicum Delzie Demaree 1933-6-23 10379 San Mateo White House Creek. Comment
  JROH3786  Galium murale John H. Thomas 1958-5-10 7138 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3791  Galium murale John H. Thomas 1967-6-1 12967 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3799  Galium murale John H. Thomas 1976-4-30 18103 San Mateo Jasper Ridge Biological Preserve, Stanford University. Below dam Comment
  POM222811  Galium nuttallii S. S. Berry, K. L. Dole 1909-4-3 s.n. San Mateo Near foot of Bear Creek Grade. 152 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
  JROH3812  Galium porrigens var. porrigens John Hunter Thomas 1981-5-25 20619 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3814  Galium porrigens var. porrigens John Hunter Thomas 1983-4-28 21782 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1143094  Galium porrigens var. porrigens H. S. Yates 1935-2-3 509 San Mateo 1/2 mi se Pigeon Pt.; Santa Cruz Quadrangle Comment
  UCR240616  Gamochaeta ustulata T. B. Salvato, Lia V. D. Mansfield, Joel-Henry J. Mansfield 2008-6-14 3516 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
  RSA218010  Gamochaeta ustulata Phillip Wheeler 1965-5-12 s.n. San Mateo Pig Ranch Ravine; San Bruno Mountains. Comment
  CAS-BOT-BC194560  Garrya elliptica Lewis S. Rose 1962-2-5 62001 San Mateo San Andreas Lake 152 Comment
  CAS-BOT-BC194565  Garrya elliptica E. H. Richardson 1906-2-1 s.n. San Mateo Black Mountain Road Comment
  CAS-BOT-BC194570  Garrya elliptica George Oberlander 1949-4-2 47 San Mateo Northern Cahill Ridge, San Francisco Watershed Reserve Comment
  RSA181583  Garrya elliptica E. A. McGregor 1907-2-10 s.n. San Mateo Jasper Ridge. 244 Comment
  UC1122637  Garrya elliptica G. E. Sindel 1935-8-19 336 San Mateo 3.25 mi n La Honda; Santa Cruz Quad. 426 Comment
  RSA116655  Garrya elliptica Roxana Stinchfield 1914-2-7 13 San Mateo Judge Allens [difficult to read] Road. Comment
  RSA116686  Garrya elliptica Helen M. Edwards 1917-02 s.n. San Mateo Los Traucos Canon [Canyon]. Comment
  POM226889  Gaura sinuata L. R. Abrams 1935-06 13687 San Mateo Field near junction of Los Troncos and San Francisquito creeks Comment
  CAS-BOT-BC219146  Genista monspessulana Elizabeth McClintock; Paul Reeberg 1988-6-7 s.n. San Mateo above the intersection of San Bruno Avenue and Annis Comment
  CHSC56539  Genista monspessulana Steven Triano 1988-5-24 177 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
  JROH2015  Genista monspessulana John Hunter Thomas 1985-5-7 23640 San Mateo Jasper Ridge Biological Preserve, Stanford University; near bridge Comment
  UC202809  Geranium dissectum A. D. E. Elmer Jun 1903 4730 San Mateo San Mateo Comment
  UCSB19618  Geranium dissectum Schulte, John 1963-4-14 San Mateo Jasper Ridge; 3 miles SW of Stanford Campus; between Santa Clara Valley and main front of Santa Cruz Mountains 152 Comment
  JROH5790  Geranium purpureum Toni Corelli 2016-4-25 1250 San Mateo Jasper Ridge Biological Preserve, Stanford University; outside exclosure Rd. G 121 Comment
  UCD103506  Geranium robertianum Carolyn Lundquist 1994-5-30 24 San Mateo Henrik Ibsen Park, 13800 Skyline Blvd. Woodside, CA. 609 Comment
  JROH3167  Gilia clivorum John Hunter Thomas 1991-4-11 24980 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  UC75487  Gilia clivorum C. F. Baker Apr 1903 1930 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC123797  Gilia mellita Edward Lee Greene 1886-6-23 s.n. San Mateo Belmont 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-BC266510  Githopsis diffusa Fred Hemphill 1973-4-8 614 San Mateo San Carlos. N of Malabar Road and Melendy Drive 243 Comment
  CAS-BOT-BC266511  Githopsis diffusa Margaret A. Barry 1937-5-15 s.n. San Mateo On Coal Mine Ridge Comment
  CAS-BOT-BC303686  Glebionis coronaria Walter & Irja Knight 1965-4-24 1083 San Mateo San Bruno Mt. Pig Ranch Ravine 45 Comment
  JROH2025  Glycyrrhiza lepidota John H. Thomas 1971-8-7 16016 San Mateo Jasper Ridge Biological Preserve, Stanford University; near west side of Searsville Lake Comment
  CAS-BOT-BC303825  Gnaphalium John H. Thomas 1965-4-29 10612 San Mateo San Bruno Mt in N part of county 396 Comment
  SEINET11849355  Gnaphalium chilense M. T. Doutt 1931-1 424 San Mateo Portola Comment
  RSA101023  Gnaphalium palustre G. Oberlander 1949-7-30 322 San Mateo San Andreas Lake, San Francisco Watershed Reserve. Comment
  JEPS67910  Gratiola ebracteata L. R. Heckard and J. H. Thomas 1972-4-16 2893 San Mateo along Old Canada Road (private) ca 1 1/2 mi s Pulgas Water Temple ((sw of Upper Crystal Springs Reservoir)); sw of Upper Crystal Springs Reservoir 121 Comment
  POM359110  Grindelia D. D. Keck 1932-5-25 1783 San Mateo Hills two miles W of Belmont Comment
  CAS-BOT-BC304502  Grindelia hirsutula Roxana Stinchfield 1915-9-19 252 San Mateo Santa Cruz Mountain Peninsula. Palo Alto Comment
  CAS-BOT-BC304508  Grindelia hirsutula W. R. Dudley 1894-1-28 s.n. San Mateo Santa Cruz Peninsula. Redwood Creek Comment
  CAS-BOT-BC304526  Grindelia hirsutula Walter Knight; Irja Knight; Elizabeth McClintock 1963-9-2 s.n. San Mateo San Bruno Mountain. Radio Road Comment
  CAS-BOT-BC304548  Grindelia hirsutula A. A. Heller 1907-5-28 8575 San Mateo Above Crystal Springs on the Half Moon Bay road Comment
  CAS-BOT-BC304549  Grindelia hirsutula Javier Penalosa 1963-3-30 2736 San Mateo San Bruno Mountain. North of Randolph Drive at Hillside Blvd. in SSF 289 Comment
  CAS-BOT-BC304553  Grindelia hirsutula A. D. E. Elmer 1903-6-1 4267 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC304564  Grindelia hirsutula H. L. Mason 1921-7-3 s.n. San Mateo Pescadero - La Honda Road Comment
  CAS-BOT-BC304567  Grindelia hirsutula Lewis S. Rose 1933-6-9 33221 San Mateo San Andreas Lake Comment
  JEPS17019  Grindelia hirsutula Rimo Bacigalupi with J. R. Sweeney, G. Bacigalupi Jr., and C. Fenneman 1954-8-3 4738 San Mateo rocky road berm directly above Point San Pedro Comment
  JEPS20069  Grindelia hirsutula Peter H. Raven 1957-9-1 11297 San Mateo at junction of State Highway 1 and Tunitas Creek Comment
  POM58290  Grindelia hirsutula C. F. Baker 1902-5-10 812 San Mateo Summit of Coast Range. Comment
  SJSU15767  Grindelia hirsutula Toni Corelli 2011-9-14 722 San Mateo Rockaway Headlands, southwest of Rockaway Beach, Pacifica 53 Comment
  UC1599358  Grindelia hirsutula L. R. Heckard 1961-7-16 1264 San Mateo across road from transmitting station KQED (near summit of mt.); San Bruno Mt. 335 Comment
  UC206210  Grindelia hirsutula Katharine Brandegee 1917-7-15 San Mateo Moss Beach Comment
  JROH814  Grindelia hirsutula John H. Thomas 1961-6-14 9538 San Mateo Jasper Ridge Biological Preserve, Stanford University; in "parking area" at Searsville end of Lake Comment
  JROH815  Grindelia hirsutula John H. Thomas 1970-4-4 15541 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH826  Grindelia hirsutula John Hunter Thomas 1987-5-26 24316 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR121573  Grindelia hirsutula subsp. hirsutula George K. Helmkamp, E. A. Helmkamp 1999-6-28 5005 San Mateo Pescadero Creek Watershed, Bean Hollow Road 0.3 mi south of Pescadero Road (SW of Pescadero). Slopes above Butano Creek 61 Comment
  CDA6158  Grindelia stricta var. platyphylla T. C. Fuller 1960-6-24 5020 San Mateo Highway 1, 7 miles north of Princeton. 0 Comment
  RSA184825  Grindelia stricta var. platyphylla L. S. Rose 1965-9-4 65102 San Mateo Pillar Point. 15 Comment
  RSA121240  Hainardia cylindrica A. Hormay 1932-5-29 17 San Mateo San Bruno. Comment
  JROH440  Hedera helix John H. Thomas 1967-6-1 12974 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC306532  Helenium bigelovii A. D. E. Elmer 1903-7-1 4968 San Mateo San Mateo Comment
  CAS-BOT-BC309525  Helenium puberulum Elizabeth McClintock; Paul Reeberg 1988-8-18 s.n. San Mateo San Bruno Mountains. Along Summer Seep Trail 220 Comment
  JROH853  Helianthella californica var. californica John Hunter Thomas 1978-4-20 19081 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC224056  Helianthemum scoparium James McMurphy 1907-5-19 s.n. San Mateo Coal Mine Ridge Comment
  CAS-BOT-BC305365  Helianthus annuus J. H. Thomas 1959-12-18 8521 San Mateo Near Palo Alto Yacht Harbor Comment
  CAS-BOT-BC305629  Helianthus californicus George Oberlander 1950-4-23 880 San Mateo San Francisco Watershed Reserve. Near stone gate south of Lower Crystal Spr. Lake Comment
  CAS-BOT-BC305924  Helminthotheca echioides Ira L. Wiggins 1977-7-23 22188 San Mateo Bed of San Francisquito Creek, ca 150 m upstream from Pope Street bridge, San Mateo County side of center line, 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-BC453465  Hemitomes congestum Louise Koenig 1928-6-1 s.n. San Mateo Skyline Boulevard in a canyon at the head of La Honda Creek Comment
  RSA81601  Hemizonia congesta James I. McMurphy 1909-6-13 s.n. San Mateo Summit, between Colma and San Bruno. Comment
  CAS-BOT-BC313452  Hemizonia congesta subsp. luzulifolia John H. Thomas 1961-8-27 9691 San Mateo Colma, near intersection of El Camino Real and F Street 45 Comment
  CAS-BOT-BC313458  Hemizonia congesta subsp. luzulifolia Roxana Stinchfield 1915-10-14 260 San Mateo Cedro Villa, Stanford University, Santa Cruz Mountain Peninsula Comment
  CAS-BOT-BC313459  Hemizonia congesta subsp. luzulifolia Lewis S. Rose 1935-9-21 35652 San Mateo Redwood City Comment
  CAS-BOT-BC314914  Hemizonia congesta subsp. luzulifolia Ned Cahill 1974-8-26 367 San Mateo Near the intersection of Canada and Edgewood Roads about 3 mi. westward from Redwood City Comment
  CAS-BOT-BC314917  Hemizonia congesta subsp. luzulifolia J. H. Thomas 1962-11-4 10014 San Mateo Jasper Ridge, Stanford University Biological Experimental Area near Westridge end Comment
  CAS-BOT-BC314936  Hemizonia congesta subsp. luzulifolia C. F. Baker 1903-6-30 3350 San Mateo Crystal Springs Comment
  JEPS22892  Hemizonia congesta subsp. luzulifolia John H. Thomas 1958-11-22 7507 San Mateo about 5 mi sw of Palo Alto; Jasper Ridge 152 Comment
  JROH867  Hemizonia congesta subsp. luzulifolia Richard L. Garber 1971-7-13 52 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SBBG28892  Hemizonia congesta subsp. luzulifolia L. S. Rose 1935-9-21 San Mateo Redwood City Comment
  UC897702  Hemizonia congesta subsp. luzulifolia Lewis S. Rose 1937-9-21 37662 San Mateo w Redwood City; Emerald Lake 182 Comment
  POM360251  Hemizonia corymbosa subsp. corymbosa L. S. Rose 1937-8-29 37644 San Mateo Moss Beach. 15 Comment
  POM284877  Hemizonia corymbosa subsp. corymbosa Lyman Benson 1930-6-14 2161 San Mateo San Gregorio. 61 Comment
  RSA81624  Hemizonia corymbosa subsp. corymbosa James I. McMurphy 1907-8-6 s.n. San Mateo Between Woodside and Crystal Springs. Comment
  RSA184852  Hemizonia luzulifolia L. S. Rose 1965-8-27 65094 San Mateo Emerald Lake, West of Redwood City 183 Comment
  SEINET7883478 Image available Hemizonia luzulifolia Lewis S. Rose 1941-1 41470 San Mateo Belmont 6 Comment
  RSA51402  Hemizonia pungens subsp. maritima L. S. Rose 1949-8-14 49166 San Mateo Bayshore Blvd., San Mateo. Comment
  JROH885  Hesperevax sparsiflora var. sparsiflora John H. Thomas 1977-2-20 18469 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH899  Hesperevax sparsiflora var. sparsiflora John Hunter Thomas 1991-5-2 25008 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC310248  Hesperevax sparsiflora var. sparsiflora Ned Cahill 1975-2-21 405 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  JROH4228  Hesperocnide tenella John H. Thomas 1974-5-19 17384 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB24049  Hesperocyparis abramsiana Dutton, H. 1949-9-19 San Mateo Common corners of sections 11 & 12 and 13 & 14 Range 4 West, on the north bank of the North Fork of Butano Creek Comment
  CAS-BOT-BC176214  Hesperolinon congestum Hester R. Davis 1920-6-1 179 San Mateo Back of Redwood City Comment
  JEPS122848  Hesperolinon congestum Adam C. Schneider 2013-5-17 172 San Mateo Crystal Springs Reservoir Comment
  JROH2935  Hesperolinon micranthum John Hunter Thomas 1983-6-29 22707 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM139231  Hesperolinon micranthum A. D. E. Elmer 1903-05 4422 San Mateo Crystal Springs Lake. Comment
  CAS-BOT-BC422603  Hesperomecon linearis A. D. E. Elmer 1903-6-1 4594 San Mateo San Bruno Hills Comment
  CAS-BOT-BC148466  Heteromeles arbutifolia W. R. Dudley 1904-12-7 s.n. San Mateo East of Baker's Beach - Santa Cruz Mountain Peninsula Comment
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Oct 11 2021
  JROH3678  Heteromeles arbutifolia John H. Thomas 1973-6-10 16814 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3681  Heteromeles arbutifolia John H. Thomas 1978-5-16 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA681422  Heteromeles arbutifolia Annuschka Deb 1989-1-27 14 San Mateo Woodside. Comment
  SD49795  Heteromeles arbutifolia John H. Thomas 1958-11-22 7504 San Mateo Jasper Ridge, about 5 miles southwest of Palo Alto. North central portion of ridge. 152 Comment
  CAS-BOT-BC310769  Heterotheca sessiliflora subsp. echioides John H. Thomas 1961-8-27 9702 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC310762  Heterotheca sessiliflora subsp. echioides E. A. McGregor 1906-9-23 s.n. San Mateo Corte de Madera Comment
  CAS-BOT-BC310772  Heterotheca sessiliflora subsp. echioides Margaret A. Barry 1937-9-24 217 San Mateo Coal Mine Ridge Comment
  CAS-BOT-BC420717  Heuchera micrantha Elizabeth McClintock 1972-5-10 s.n. San Mateo San Bruno Mountain, rocky slope just below parking lot, summit of mountain Comment
  CAS-BOT-BC420891  Heuchera micrantha var. diversifolia Peter Rubtzoff 1953-5-14 1342 San Mateo Pilarcitos Creek canyon 1 to 2 miles downstream from Pilarcitos Lake Comment
  CAS-BOT-BC420890  Heuchera micrantha var. diversifolia W. R. Dudley 1894-7-30 s.n. San Mateo La Honda Road Comment
  CAS-BOT-BC424377  Heuchera micrantha var. hartwegii Walter & Irja Knight 1964-5-4 s.n. San Mateo Romanzoffia ravine; San Bruno Mountain Comment
  RSA0063100  Heuchera micrantha var. hartwegii I. L. Wiggins 1929-7-4 3776 San Mateo 4 miles W of La Honda on hill road to Pescadero Beach. Comment
  CAS-BOT-BC319636  Hieracium albiflorum Josephine D. Randall 1907-6-29 82 San Mateo Portola Valley, Santa Cruz Peninsula Comment
  OBI49218  Hieracium albiflorum Lewis S. Rose 1939-6-16 39279 San Mateo Kings Mtn 671 Comment
  RSA120374  Hierochloe occidentalis Le Roy Abrams 1904-3-7 s.n. San Mateo Bear Gulch, Santa Cruz Mountains Comment
  UCD84964  Holcus lanatus Josephine D. Randall 1907-6-29 159 San Mateo Portola Valley. Comment
  NY42430  Holodiscus discolor J. B. Walker 1994-8-14 908 San Mateo Pomponio Creek Rd, 5km S of junction of Hwy 84 & Hwy 1 10 Comment
  RSA449783  Holodiscus discolor D. D. Keck 1932-6-1 1795 San Mateo Above Searsville Lake, on road between Woodside and Skyline Blvd. Santa Cruz Mountains. Comment
  JROH3690  Holodiscus discolor var. discolor John H. Thomas 1974-5-29 17399 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA60658  Hordeum brachyantherum I. L. Wiggins 1950-5-20 12352 A San Mateo Pescadero Beach Comment
  RSA6305  Hordeum brachyantherum D. D. Keck 1965-5-6 1465 San Mateo Belmont Comment
  CAS-BOT-BC284682  Hordeum brachyantherum subsp. brachyantherum John H. Thomas 1963-5-20 10111 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  SJSU15222  Hordeum brachyantherum subsp. brachyantherum Toni Corelli 2011-5-23 704 San Mateo Bean Hollow State Beach, Arroyo de los Frijoles Trail. Coastal bluff top south of Bean Hollow Beach 7 Comment
  SEINET10610437  Hordeum brachyantherum subsp. brachyantherum Delzie Demaree 1932-5-8 Demaree 9106 San Mateo Spring Valley Road. Comment
  RSA0115578  Hordeum hystrix L. S. Rose 1953-4-17 53015 San Mateo Redwood City, along Bayshore Highway 3 Comment
  CAS-BOT-BC285149  Hordeum marinum subsp. gussoneanum P. R. Hichborn 1920-5-18 236 San Mateo Santa Cruz Mountain Peninsula. Woodside Comment
  CAS-BOT-BC285153  Hordeum marinum subsp. gussoneanum Le Roy Abrams 1901-5-1 1660 San Mateo Cooley's Landing Comment
  JROH5778  Hordeum marinum subsp. gussoneanum John Rawlings 2016-4-19 1725 San Mateo Jasper Ridge Biological Preserve, Stanford University. Rd E at Trail 11 108 Comment
  SEINET10595756  Hordeum murinum Delzie Demaree 1933-7-27 Demaree 10553 San Mateo Stabilized sand dunes 2 miles S of Pigeon Point. Comment
  JROH5252  Hordeum murinum subsp. glaucum John Hunter Thomas 1980-4-10 19879 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Searsville Lab. Comment
  JROH5254  Hordeum murinum subsp. glaucum John Rawlings 2013-4-30 1177 San Mateo Jasper Ridge Biological Preserve, Stanford University. Road B in SLAC Corridor. Comment
  CAS-BOT-BC289457  Hordeum murinum subsp. leporinum John H. Thomas 1963-5-20 10152 San Mateo Ano Nuevo Island about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  CAS-BOT-BC289463  Hordeum murinum subsp. leporinum Walter Knight; Irja Knight 1964-4-13 s.n. San Mateo Power Line Ridge, San Bruno Mountain Comment
  CAS-BOT-BC271353  Hordeum vulgare J. H. Thomas 1962-5-12 9862 San Mateo Franklin Point, about sea level Comment
  CAS-BOT-BC271400  Hordeum vulgare John H. Thomas 1974-4-11 17123 San Mateo Area to the SE of Canada Road and Edgewood Road, NW of Woodside 152 Comment
  CAS-BOT-BC536139  Horkelia californica J. H. Thomas 1954-6-11 4273 San Mateo 0.8 mile north of Pescadero Creek 60 Comment
  UC83527  Horkelia californica Katharine Brandegee June 1905 San Mateo Halfmoon Bay Comment
  CAS-BOT-BC536151  Horkelia californica Elizabeth McClintock 1965-6-13 s.n. San Mateo Colma Canyon, San Bruno Mountain Comment
  HSC18685  Horkelia californica L. S. Rose 1966-8-20 66086 San Mateo San Bruno Mtn., head of Colma Canyon 206 Comment
  CAS-BOT-BC144013  Horkelia marinensis George Oberlander 1951-7-12 1204 San Mateo Clearing in San Andreas Valley, San Francisco Watershed Reserve 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
  UC306530  Hydrocotyle verticillata A. D. E. Elmer July, 1903 4960 San Mateo Crystal Springs Lake Comment
  UCD160241  Hypericum canariense Christopher Dillis 2015-5-15 4 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
  UCD133374  Hypochaeris glabra J. Skoss 1948-8-22 111 -A San Mateo San Vincente Canyon, near Montara. Comment
  CAS-BOT-BC311480  Hypochaeris radicata 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-BC311481  Hypochaeris radicata Louis F. Pitelka 1973-4-22 797 San Mateo San Carlos. Chaparral area north of Malabar Rd. and Melendy Dr. 207 Comment
  CAS-BOT-BC311485  Hypochaeris radicata A. D. E. Elmer 1903-4-1 4861 San Mateo Lake San Andreas Comment
  JROH928  Hypochaeris radicata John H. Thomas 1974-5-3 17237 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH932  Hypochaeris radicata John Hunter Thomas 1981-7-24 20733 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH937  Hypochaeris radicata John Hunter Thomas 1987-5-5 24239 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SD39736  Hypochaeris radicata Edith A. Purer 1933-7-27 5394 San Mateo 2.0 miles south of Pigeon Point. Comment
  UC1069667  Hypochaeris radicata G. E. Sindel 1935-7-30 316 San Mateo 2.5 mi nnw Pescadero; Santa Cruz Quad. Comment
  UCD35771  Hypochaeris radicata Beecher Crampton 1962-6-11 6492 San Mateo Pacifica, north city limits, along State Hwy. 1 just southwest of its junction with Skyline Blvd. Comment
  JROH1535  Iberis umbellata Toni Corelli 2012-10-23 377 San Mateo Jasper Ridge Biological Preserve, Stanford University. Caretaker garden near the residence 109 Comment
  JROH5615  Iris douglasiana John Rawlings 2014-4-11 1218 San Mateo Jasper Ridge Biological Preserve, Stanford University; confluence of Bear and San Francisquito creeks just east of the terminus of Trail 20 growing at edge of the steep bank of San Francisquito Creek. 82 Comment
  UC306610  Iris douglasiana A. D. E. Elmer Jun 1903 4806 San Mateo San Mateo Comment
  POM290981  Iris douglasiana Robert Benson 1930-4-6 2043 San Mateo Moss Beach 15 Comment
  RSA136530  Iris douglasiana Lee W. Lenz, E. K. Balls 1952-5-6 17096 San Mateo Old La Honda Road to Palo Alto, northeast from Highway 5 305 Comment
  UCSB18476  Iris douglasiana Muirhead, M. 1964-4-17 San Mateo on Crocker Estate; Hillsborough; California 91 Comment
  CAS-BOT-BC133658  Iris longipetala L. R. Abrams 1919-3-20 s.n. San Mateo South San Francisco Comment
  UC143465  Iris longipetala C. F. Baker 1902-3-22 348 San Mateo South San Francisco Comment
  UCSB9341  Iris longipetala Haller, John 1950-4-24 San Mateo 3 miles above Woodside; on road to skyline drive 304 Comment
  JROH4430  Iris pseudacorus John H. Thomas 1961-5-5 9221 San Mateo Jasper Ridge Biological Preserve, Stanford University. Swampy area at edge of Searsville Lake Comment
  CAS-BOT-BC112614  Isolepis cernua LeRoy Abrams; Ira L. Wiggins 1956-7-2 56117 San Mateo Skyline Blvd. Hills W of San Mateo. 182 Comment
  JEPS63782  Isolepis cernua William S. Cooper 1919-7-22 204 San Mateo Ano Nuevo Pt Comment
  SEINET7589110 Image available Isolepis cernua E. B. Copeland 1903-6-15 3315 San Mateo Montara Point. Comment
  SEINET7589112 Image available Isolepis cernua E. B. Copeland 1903-6-15 3315 San Mateo Montara Point. Comment
  SD37602  Jaumea carnosa Edith A. Purer 1933-7-27 5367 San Mateo Pigeon Point Comment
  JROH4522  Juncus John H. Thomas 1973-3-12 16487 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCR121569  Juncus bufonius George K. Helmkamp, E. A. Helmkamp 1999-6-28 4997 San Mateo Pescadero Creek Watershed, Bean Hollow Road 0.3 mi south of Pescadero Road (SW of Pescadero). Slopes above Butano Creek 61 Comment
  RSA796693  Juncus bufonius Peter Rubtzoff 1977-6-21 9066 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  SEINET8544724  Juncus bufonius Charles Piper Smith 1905-4-1 728 San Mateo Stanford Univ. Roadside near Stockfarm bridge. Comment
  JROH4449  Juncus bufonius var. bufonius John H. Thomas 1974-5-19 17384 C San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4451  Juncus bufonius var. bufonius John Hunter Thomas 1977-6-16 18811 San Mateo Jasper Ridge Biological Preserve, Stanford University. Delta in Searsville Lake. Comment
  SJSU15771  Juncus bufonius var. bufonius Toni Corelli 2010-6-1 632 San Mateo Wavecrest, west of Highway 1 in Half Moon Bay. 25 Comment
  CDA14198  Juncus bufonius var. congestus J. Ferguson 1998-4-17 PDR 1117376 San Mateo San Francisco Bay Area; Public lawn area in Redwood City. 0 Comment
  UC1101015  Juncus effusus subsp. pacificus Malcolm A. Nobs and S. Galen Smith 1949-8-26 1589 San Mateo about 1 mi s Half Moon Bay Comment
  POM312825  Juncus effusus subsp. pacificus Malcolm A. Nobs, S. Galen Smith 1949-8-26 1589 San Mateo About 1 mile south of Half Moon Bay. Comment
  CAS-BOT-BC173814  Juncus effusus var. brunneus Peter Rubtzoff; Roman Gankin 1975-9-11 8372 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction. Comment
  RSA790891  Juncus lescurii Peter Rubtzoff 1976-6-30 8708 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Westernmost part of the area on slope across fence. Comment
  UCSC007263  Juncus lescurii Randall Morgan 1987-4-29 s.n. San Mateo Ravine in 1st big gorge north of Comment
  POM176267  Juncus occidentalis E. B. Copeland 1903-03 3341 San Mateo Searsville. Comment
  UC142114  Juncus occidentalis Dr. E. B. Copeland Mar 1903 3341 San Mateo Searsville Comment
  CAS-BOT-BC227623  Juncus occidentalis Peter Rubtzoff; Elizabeth McClintock; Paul Reeberg 1989-6-3 s.n. San Mateo San Bruno Mountains. Shearwater 22 Comment
  CDA39185  Juncus occidentalis W. Plummer 1974-4-18 s.n. San Mateo Pescadero, Carlene Shade property. 0 Comment
  UC14912  Juncus occidentalis Joseph Burtt Davy 1893-6-22 761 San Mateo Lake Vilarcitos Comment
  JROH4501  Juncus patens John Hunter Thomas 1977-6-16 18739 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1101087  Juncus phaeocephalus Verne Grant and Herbert L. Mason 1946-8-28 13086 San Mateo entrance to San Francisco County prison Comment
  UCR280164  Juncus phaeocephalus Peter Rubtzoff, Roman Gankin 1976-6-30 8702 San Mateo Central Coast, San Bruno Mountains. 'Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction; westernmost part of the area on slope across fence 220 Comment
  CAS-BOT-BC210092  Juncus phaeocephalus Peter Rubtzoff 1978-8-17 9262 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  JROH4039  Kickxia elatine Carol Zabel, Ann Lambrecht 2006-7-26 60 San Mateo Jasper Ridge Biological Preserve, Stanford University; Bear Creek crossing, west side of creek bank Comment
  JROH4043  Kickxia spuria John H. Thomas 1976-10-16 18422 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low flow crossing Comment
  JROH4040  Kickxia spuria Herbert Dengler 1958-9-9 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; N.E. Nolan Ridge (the ridge N.E. of Corte Madera Cr.) by trail Comment
  JROH4050  Kickxia spuria Carol Zabel 1989-8-26 31 San Mateo Jasper Ridge Biological Preserve, Stanford University; just inside main gate on Sand Hill Road Comment
  RSA100995  Koeleria macrantha G. Oberlander 1950-4-23 914 San Mateo Sweeney Ridge, San Francisco Watershed Reserve Comment
  UCD86022  Koeleria macrantha A. A. Beetle 1942-6-11 3597 San Mateo rt. 5, 15 miles south of San Bruno. Comment
  JROH945  Lactuca saligna John H. Thomas 1974-6-30 17459 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
  CAS-BOT-BC340637  Lactuca serriola James McMurphy 1905-10-1 s.n. San Mateo Corte de Madera Creek Comment
  UCD133509  Lactuca virosa John Thomas Howell 1954-9-8 30108 San Mateo Skyline Blvd. at San Andreas Lake, 2 miles west of San Bruno. Comment
  JEPS20287  Lagophylla ramosissima Lewis S. Rose 1955-9-19 55176 San Mateo 7 mi w of Saratoga; Skyline Boulevard 685 Comment
  CAS-BOT-BC341625  Lagophylla ramosissima W. R. Dudley 1905-9-23 s.n. San Mateo Santa Cruz Mountain Peninsula. Alpine road, Black Mountain Comment
  CAS-BOT-BC272430  Lamarckia aurea W. R. Dudley 1906-5-19 s.n. San Mateo Hillside toward Cordilleras Creek and Whipple Road on Britton Ranch west of Redwood City, Santa Cruz Peninsula Comment
  UC570744  Lamium amplexicaule Herbert L. Mason 1927-4-24 3703 San Mateo mouth of San Gregorio Creek Comment
  JROH2782  Lamium purpureum Toni Corelli 2010-4-28 358 San Mateo Jasper Ridge Biological Preserve, Stanford University; edge of brick pathway from visitors parking lot to field station 120 Comment
  JROH5632  Lapsana communis John Rawlings 2014-5-28 1244 San Mateo Jasper Ridge Biological Preserve, Stanford University. NW end of the Low Flow Crossing, San Francisquito Creek. 81 Comment
  CAS-BOT-BC337879  Lapsana communis L. R. Abrams 1927-7-20 12179 San Mateo Santa Cruz Mountain Peninsula. La Honda Creek, about 1 mi above La Honda Comment
  JROH5845  Lapsana communis Paul Heiple 2007-7-25 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; Bear Creek near Preserve boundary, east bank about one meter from stream Comment
  CAS-BOT-BC339059  Lasthenia californica H. L. Mason 1921-6-1 s.n. San Mateo Pebble Beach near Pescadero Comment
  CAS-BOT-BC339085  Lasthenia californica Roxana S. Ferris 1921-4-7 2128 San Mateo Santa Cruz Mountain Peninsula. San Bruno Mt. 213 Comment
  POM361529  Lasthenia californica Glenn A. Gorelick 1967-4-14 s.n. San Mateo San Bruno Mountains, overlooking Daly City near San Francisco. Comment
  CAS-BOT-BC339058  Lasthenia californica Lewis S. Rose 1933-5-3 33141 San Mateo Montara Comment
  CAS-BOT-BC339081  Lasthenia californica W. R. Dudley 1900-3-17 s.n. San Mateo Santa Cruz Mountain Peninsula. Above Seal Cove Comment
  JROH5789  Lasthenia californica subsp. californica John Rawlings 2016-5-3 1781 San Mateo Jasper Ridge Biological Preserve, Stanford University; bare, rocky, sepentinite about 30 yards west of Rd F in Area C 177 Comment
  JROH978  Lasthenia californica subsp. californica John Hunter Thomas 1981-5-8 20563 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC324423  Lasthenia californica subsp. macrantha Kenton L. Chambers 1956-6-20 1045 San Mateo Pebble Beach near Pescadero Point, on bluff between Highway 1 and the ocean Comment
  SJSU15805  Lasthenia californica subsp. macrantha Toni Corelli 2015-5-3 1191 San Mateo Montara State Beach west of Hwy. 1 and north of La Costanera restaurant in Montara, California. 11 Comment
  SEINET11811268  Lasthenia chrysostoma M. T. Doutt 1931-1 414 San Mateo Skyline Blvd, W of Hillbrae Comment
  UC1142638  Lasthenia glabrata subsp. glabrata Edw. L. Greene 1886-5-11 San Mateo Belmont Comment
  POM288365  Lasthenia gracilis Lyman Benson 1930-5-3 2097 San Mateo Above Woodside, Mt. Range: Santa Cruz 244 Comment
  CAS-BOT-BC368184  Lasthenia minor John H. Thomas 1967-5-7 12834 San Mateo Pigeon Point. Altitude about sea level. Near Lighthouse. Comment
  SEINET7076116  Lasthenia minor A. G. Vestal 1955-5-31 s.n. San Mateo Pescadero Beach [Pescadero State Beach]. (NAD 27; 37.2631? deg. North Latitude, 122.4118? deg. West Longitude, UTM Zone 10, 552155mE, 4124015mN). [GPS Coordinate: WGS84/NAD83]. Comment
  POM19356  Lathyrus jepsonii subsp. californicus Edward L. Greene 1902-5-16 8270 San Mateo Foothills near Stanford University. Comment
  RSA177057  Lathyrus littoralis John H. Thomas 1964-5-9 10379 San Mateo Pescadero Beach. Comment
  UC201111  Lathyrus littoralis Katharine Brandegee 1918-7-4 San Mateo Salida Beach Comment
  UCSB18272  Lathyrus sulphureus Muirhead, M. 1964-4-17 San Mateo Dry slope on Crocker Estate, Hillsborough 76 Comment
  UC625422  Lathyrus tingitanus L. R. Abrams and I. L. Wiggins 1939-6-3 421 San Mateo 3-4 mi e San Gregorio (on La Honda road) Comment
  RSA152255  Lathyrus vestitus subsp. vestitus I. L. Wiggins 1925-04 1661 San Mateo On Kings Mtn Road three fourths of a mile above Woodside. Comment
  UC1252091  Lavatera arborea J. H. Thomas 1959-4-4 7660 San Mateo roadside on coastal bluffs at Pescadero; at coastal bluffs at Pescadero 60 Comment
  UCR252690  Lavatera arborea A. C. Sanders 2014-8-3 41237 San Mateo San Francisco Bay, South San Francisco, San Francisco Bay Trail in vicinity of S Airport Drive, Utah Ave., and Haskins Way, between Hwy 101 and San Francisco Bay 6 Comment
  CAS-BOT-BC323154  Layia chrysanthemoides David D. Keck 1932-5-6 1487 San Mateo Near Skyline Boulevard, west of Millbrae Highlands. Comment
  CAS-BOT-BC323157  Layia chrysanthemoides David D. Keck 1932-5-6 1488 San Mateo 4 miles W of Burlingame on Skyline Boulevard. Comment
  CAS-BOT-BC321069  Layia gaillardioides Lewis S. Rose 1935-5-4 35149 San Mateo Burlingame Comment
  CAS-BOT-BC321114  Layia gaillardioides David D. Keck 1932-6-1 1798 San Mateo 1.5 mi. NE of La Honda Santa Cruz Mountains 213 Comment
  UC30645  Layia gaillardioides J. Burtt Davy 1895-4-20 1081 San Mateo San Mateo Creek Comment
  CAS-BOT-BC321072  Layia gaillardioides H. L. Mason 1921-7-14 s.n. San Mateo La Honda-Pescadero Road, near Pescadero Creek Comment
  CAS-BOT-BC321096  Layia gaillardioides W. R. Dudley 1905-6-19 s.n. San Mateo Alpine School, Black Mt. Comment
  CAS-BOT-BC321117  Layia gaillardioides David D. Keck 1932-5-11 1764 San Mateo 1.5 miles NE of La Honda, Santa Cruz Mountains Comment
  CAS-BOT-BC327361  Layia hieracioides David D. Keck 1932-6-1 1796 San Mateo Above Searsville Lake, on La Honda road, E slope of Santa Cruz Mountains Comment
  CAS-BOT-BC327468  Layia hieracioides John H. Thomas 1950-5-14 1871 San Mateo Ben Lomond Sand Hills, along Quail Hollow Road 152 Comment
  JEPS22902  Layia hieracioides John H. Thomas 1958-5-10 7158 San Mateo 5 mi sw Palo Alto; Searsville Lake 152 Comment
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Jul 14 2009
  POM298251  Layia hieracioides D. D. Keck 1932-6-1 1796 San Mateo Above Searsville Lake, on la Honda Road, east slope of Santa Cruz Mts. Comment
  CAS-BOT-BC327478  Layia hieracioides Walter Knight; Irja Knight 1963-7-5 s.n. San Mateo San Bruno Mountain; Dairy Ravine across road from KQED radio tower. Comment
  CAS-BOT-BC327503  Layia hieracioides Peter Rubtzoff; Roman Gankin 1975-5-21 7963 San Mateo San Bruno Mountains. Saddle area on N side of Guadalupe Canyon Parkway W of Radio Road junction. Open area just N of Guadalupe Canyon Parkway. Comment
  POM298199  Layia hieracioides D. D. Keck 1933-5-11 2306 San Mateo Skyline Blvd, E of Salada, northern San Mateo County. Comment
  RSA100979  Layia hieracioides G. Oberlander 1949-9-25 368 San Mateo On Sawyer Ridge, San Francisco Watershed Reserve. Comment
  JEPS35780  Layia platyglossa V. F. Hesse 1964-5-26 3208 San Mateo Pigeon Point Comment
  JROH991  Layia platyglossa John H. Thomas 1955-5-6 4085 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH992  Layia platyglossa John H. Thomas 1956-4-7 5622 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC382091  Layia platyglossa Elizabeth McClintock 1978-4-11 s.n. San Mateo Gilmore McDowell property, Woodside Comment
  CAS-BOT-BC382095  Layia platyglossa John H. Thomas 1967-5-2 12816 San Mateo Along Skyline Blvd., 0.4 miles S of Black Mt. intersection; Hillsborough Comment
  CAS-BOT-BC382215  Layia platyglossa David D. Keck 1933-5-11 2305 San Mateo Skyline Blvd., east of Salada, northern San Mateo County Comment
  RSA128853  Layia platyglossa subsp. campestris W. R. Dudley 1909-4-27 s.n. San Mateo Whipple Road near Blacksmith shop between Woodside and Crystal Springs Lake. Plants of the Santa Cruz Mountain Peninsula. Comment
  CDA987  Leontodon taraxacoides D. G. Kelch, B. G. Baldwin, Sue Bainbridge, Abigail Moore 2005-6-21 5 .37 San Mateo S.F. Water District land, near Spring Valley. NE corner Pilarcitos Lake. Comment
  CAS-BOT-BC221530  Lepechinia calycina David D. Keck 1932-5-25 1779 San Mateo Hills two miles west of Belmont Comment
  CAS-BOT-BC221531  Lepechinia calycina Phillip C. Wheeler 1965-6-20 s.n. San Mateo San Bruno Mountain. Area west of Crystal Cave Canyon Comment
  CAS-BOT-BC221535  Lepechinia calycina Fred Hemphill 1973-4-8 661 San Mateo San Carlos. North of Malabar Rd. and Melendy Dr. 207 Comment
  JROH2784  Lepechinia calycina John H. Thomas 1955-5-6 5015 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM202471  Lepechinia calycina L. S. Rose 1933-6-9 33225 San Mateo Belmont Comment
  CAS-BOT-BC89135  Lepidium didymum H. L. Mason 1921-5-29 s.n. San Mateo Pebble Beach near Pescadero. Comment
  RSA18464  Lepidium didymum C. B. Wolf 1927-6-29 544 San Mateo South of Pebble Beach near Pescadero Comment
  CDA3808  Lepidium latifolium J. T. Howell 1978-7-18 53189 San Mateo Airport Sheraton, Airport Boulevard., Burlingame 0 Comment
  CAS-BOT-BC12600  Lepidium nitidum Margaret A. Barry 1937-5-8 83 San Mateo On Coal Mine Ridge. Comment
  JROH1548  Lepidium nitidum John H. Thomas 1977-4-8 18521 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1558  Lepidium strictum John H. Thomas 1968-3-17 14186 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC12953  Lepidium strictum John Thomas Howell 1955-5-5 s.n. San Mateo 700 block of Bromfield Road, Burlingame. Comment
  CAS-BOT-BC226595  Leptosiphon ambiguus John H. Thomas 1971-5-2 15815 San Mateo Near intersection of Canada Road and Edgewater [Edgewood] Road, about three miles westward from Redwood City 152 Comment
  JROH3174  Leptosiphon androsaceus L. Fletcher 1986-4-17 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA128848  Leptosiphon androsaceus Roxana S. Ferris 1921-5-24 2192 San Mateo Bluffs, Pebble Beach near Pescadero. Comment
  JROH5691  Leptosiphon bicolor John Rawlings 2015-4-7 1454 San Mateo Jasper Ridge Biological Preserve, Stanford University; quarry off Trail 12 110 Comment
  UC176059  Leptosiphon croceus Miss Kate Cole May 1914 San Mateo Moss Beach Comment
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Feb 8 2016
  CAS-BOT-BC226623  Leptosiphon grandiflorus W. R. Dudley 1896-7-30 s.n. San Mateo Santa Cruz Peninsula. Summit of hill just beyond La Honda Comment
  CAS-BOT-BC123030  Lessingia arachnoidea Charles Fuller Baker 1902-9-2 1548 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC324060  Lessingia arachnoidea W. R. Dudley 1902-9-21 s.n. San Mateo East of Crystal Springs Reservoir, near fork to Alnus House, Santa Cruz Peninsula Comment
  CAS-BOT-BC324065  Lessingia arachnoidea L. S. Rose 1941-9-6 41434 San Mateo San Mateo Canyon 90 Comment
  CAS-BOT-BC324070  Lessingia arachnoidea L. S. Rose 1941-9-6 41434 San Mateo San Mateo Canyon 90 Comment
  OBI15796  Lessingia arachnoidea Lewis S. Rose 1964-9-9 64075 San Mateo Crystal Srpings Lakes; W of San Mateo 244 Comment
  SBBG39542  Lessingia arachnoidea L. S. Rose 1970-7-26 70077 San Mateo Skyline Blvd., Hillsborough, Black Mtn 121 Comment
  UC1287458  Lessingia arachnoidea Willard Spence 1960-10-16 634 San Mateo Skyline Blvd. Crystal Springs Lake (along roadside) Comment
  JROH1005  Lessingia glandulifera var. glandulifera L. R. Abrams 1910-8-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Comment
  CAS-BOT-BC324184  Lessingia hololeuca LeRoy Abrams 1900-10-1 1004 San Mateo Portola Comment
  HSC23951  Lessingia hololeuca Mary Katherine Wicksten 1971-7-20 182 San Mateo Huddart Park, by Redwood Shelter. Comment
  JROH1031  Lessingia hololeuca Rachel Hays 1972-7-31 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD163782  Leucanthemum vulgare Peter Rubtzoff 1988-5-12 9922 San Mateo San Bruno Mountains, 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road Junction, near old Guadalupe Road between Bog Trail and Saddle Trail junctions. Comment
  CAS-BOT-BC272288  Leymus X multiflorus W. R. Dudley 1909-10-10 s.n. San Mateo Just west of Belmont Sta., Santa Cruz Mountain Peninsula Comment
  UCD61319  Leymus californicus G. L. Stebbins Jr. 1941-4-26 3089 San Mateo 1 mile Northeast of La Honda, along San Gregorio Creek. Comment
  CAS-BOT-BC272185  Leymus triticoides Elizabeth McClintock; Paul Reeberg 1988-10-31 s.n. San Mateo South side of Crocker Industrial Park just east of West Powerline, San Bruno Mountains 60 Comment
  JEPS71203  Leymus triticoides William S. Cooper 1925-5-28 6 San Mateo Miramar Comment
  UC37061  Leymus triticoides unknown San Mateo San Mateo Comment
  JEPS17501  Ligusticum apiifolium R. L. Pendleton 1907-4-20 627 San Mateo Colma 182 Comment
  SEINET7097927  Lilaea scilloides A. G. Vestal 1937-6-15 s.n. San Mateo Lat. 37 14' 13ao N, Long. 122 24' 55ao W (NAD27 converted to WGS84 decimal degrees). Pebble Beach west of Pescadero. UTM Zone 10, 551863 mE, 4121109 mN. Comment
  CAS-BOT-BC451669  Lilaea scilloides K. Hoppaugh 1929-5-8 164 San Mateo Portola Road near Palo Alto Comment
  CAS-BOT-BC451672  Lilaea scilloides W. R. Dudley 1909-10-31 s.n. San Mateo Santa Cruz Mountain Peninsula. Woodside valley pond Comment
  SEINET11763376  Lilaea scilloides H. L. Mason 1922-1 s.n. San Mateo Pigeon Pt Comment
  CAS-BOT-BC130794  Lilium pardalinum Josephine D. Randall 1907-6-29 236 San Mateo Kings Mt. Road Comment
  CAS-BOT-BC389724  Lilium pardalinum M. K. Wicksten 1972-6-30 39 San Mateo Unspecified Comment
  CAS-BOT-BC45871  Limnanthes douglasii var. sulphurea J. Ed. McClellan; Bonnie McClellan 1968-4-13 n.s San Mateo Butano Creek Canyon Comment
  UCD149008  Limonium perezii M. Perlmutter 2011-6-15 s.n. San Mateo Burlingame, Sanchez Marsh. Comment
  CAS-BOT-BC238362  Limosella aquatica W. R. Dudley 1909-10-10 s.n. San Mateo The Santa Cruz Mountain Peninsula. Near boat-landing of Club-House, Crystal Springs Reservoir Comment
  SEINET5556991  Linanthus androsaceus H. S. Gentry 1931-1 91 San Mateo Collected about 1 mile SE of Holy Cross Cemetery. Comment
  UC202814  Linanthus androsaceus A. D. E. Elmer Apr 1903 4746 San Mateo Comment
  UC907992  Linanthus androsaceus J. M. Webber 1926-4-29 San Mateo Merced Lake Comment
  CDA982  Linanthus liniflorus D. G. Kelch 2002-5-6 2 .011 San Mateo Crystal Springs Reservoir. Comment
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Oct 24 2021
  SJSU12175  Linaria maroccana V. J. Haley 1985-3-6 San Mateo near El Monte & Moody Rds, Los Altos Hills Comment
  SEINET8912914  Lithocarpus densiflorus A. D. 1974-1 San Mateo California 35, about 5 miles from junction with 92 701 Comment
  CAS-BOT-BC36073  Lithocarpus densiflorus var. densiflorus George Oberlander 1949-8-20 334 San Mateo Southern boundary, Cahill Ridge 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-BC430770  Lithophragma affine W. R. Dudley 1900-3-18 s.n. San Mateo Jersey Farm near head of San Bruno Creek Comment
  CAS-BOT-BC436226  Lithophragma heterophyllum Margaret A. Barry 1937-5-15 92 San Mateo on Coal Mine Ridge Comment
  UC402461  Lithophragma heterophyllum Milo S. Baker May 1904 San Mateo near Burlingame; near Burlingame Comment
  JROH1567  Lobularia maritima John Hunter Thomas 1983-2-21 21284 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH730  Logfia gallica John H. Thomas 1967-4-28 12721 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC342473  Logfia gallica Eric Walther 1920-5-1 s.n. San Mateo Woodside Comment
  CAS-BOT-BC283230  Lolium multiflorum Cherie Wetzel 1969-6-20 882 San Mateo Near Canada College, Redwood City, just off of Farm Hill Blvd Comment
  UCD66070  Lolium multiflorum Lewis S. Rose 1966-5-2 66036 San Mateo Emerald Lake, west of Redwood City. 91 Comment
  JROH5296  Lolium perenne Toni Corelli 2005-8-1 298 San Mateo Jasper Ridge Biological Preserve, Stanford University. Road H at Bear Creek crossing. 82 Comment
  RSA184982  Lolium perenne subsp. multiflorum L. S. Rose 1966-5-2 66036 San Mateo Emerald Lake, west of Redwood City. 91 Comment
  UC1714473  Lolium temulentum W. C. Blasdale 1893-6-17 San Mateo Belmont Comment
  SEINET6205051  Lomatium dasycarpum L. S. Rose 1965-1 65027 San Mateo San Bruno Mountain, S of parking lot. Comment
  RSA119854  Lomatium macrocarpum W. R. Dudley 1894-4-21 s.n. San Mateo San Mateo Ravine below dam Comment
  UC202775  Lomatium utriculatum A. D. E. Elmer April, 1903 4794 San Mateo Crystal Springs Lake Comment
  POM132877  Lomatium vaginatum A. D. E. Elmer 1903-04 4794 San Mateo Crystal Springs Lake. Comment
  CAS-BOT-BC240581  Lonicera hispidula Ned Cahill 1974-5-13 242 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  CAS-BOT-BC240606  Lonicera hispidula Carl B. Wolf 1930-11-5 1805 San Mateo 2 miles west of La Honda, Santa Cruz Mtns. 304 Comment
  CAS-BOT-BC384624  Lonicera hispidula Mary Wicksten 1969-6-24 sn. San Mateo Miwok area - Huddart Park Comment
  JROH1668  Lonicera hispidula John Rawlings, Ann Lambrecht 2010-6-23 0933 San Mateo Jasper Ridge Biological Preserve, Stanford University; thirty yards southeast of old brick well and a few yards uphill of Trail 2 extension near a large fallen oak and mature hawthorn 113 Comment
  POM284226  Lonicera hispidula var. vacillans Lyman Benson 1928-12-15 831 San Mateo Near La Honda; Santa Cruz Mt. Range. 244 Comment
  UC306779  Lonicera hispidula var. vacillans A. D. E. Elmer June, 1903 4255 San Mateo Crystal Springs Lake Comment
  UCR51650  Lonicera involucrata 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-BC241540  Lonicera involucrata var. ledebourii David D. Keck 1938-5-30 4726 San Mateo San Gregorio 30 Comment
  CAS-BOT-BC241541  Lonicera involucrata var. ledebourii A. D. E. Elmer 1903-6-1 4272 San Mateo Lake San Andreas Comment
  POM16716  Lotus formosissimus A. D. E. Elmer 1903-04 4860 San Mateo Lake San Andreas Comment
  RSA18332  Lotus formosissimus Carl B. Wolf 1929-5-10 3703 San Mateo Coast at Pigeon Pt. South of Pescadero. Comment
  UC15579  Lotus formosissimus Alice Eastwood Apr 1896 San Mateo between Crystal Springs and Millbrae Comment
  UC665645  Lotus formosissimus Ethel Crum 1934-4-29 1701 San Mateo s of Pescadero 30 Comment
  UC80966  Lotus formosissimus Katharine Brandegee 1905-6-20 San Mateo seashore of Halfmoon Bay Halfmoon Bay Comment
  RSA120409  Lotus formosissimus W. R. Dudley 1900-3-17 s.n. San Mateo Field above Seal Cove. Comment
  UC15718  Lotus heermannii var. orbicularis F. T. Bioletti 1892-6-22 San Mateo Italian Cemetery, S. Fr. Comment
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Dec 1 2007
  UC69538  Lotus micranthus J. Burtt Davy 1893-6-22 1156 San Mateo Pilarcitos Comment
  POM16713  Lotus wrangelianus A. D. E. Elmer 1903-05 4741 San Mateo Belmont. Comment
  RSA132358  Lotus wrangelianus John H. Thomas 1955-5-6 4991 San Mateo Jasper Ridge about 3.5 miles southwest of Stanford University. 152 Comment
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Sep 19 2011
  UC1594176  Lotus wrangelianus Jerry Powell 1991-5-14 1602 San Mateo Edgewood Park Comment
  JROH2113  Lupinus affinis H. J. Dengler 1972-3-26 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; 100 yds. +/- Quercus chrysolepis site in field Comment
  SEINET10488410  Lupinus albifrons Charles F. Baker 1902-5-4 Baker UMO 71685 San Mateo Crystal spring. Open sides of gulches, 9-18 dm high Comment
  CAS-BOT-BC195796  Lupinus albifrons var. albifrons Charles Piper Smith 1948-6-21 48467 San Mateo Highway 5 - C.S. Dam-Bridge, 0.5 miles south Comment
  CAS-BOT-BC195803  Lupinus albifrons var. albifrons Delzie Demaree 1933-8-13 10508 San Mateo Red-Wood [Redwood] City Comment
  CAS-BOT-BC195818  Lupinus albifrons var. albifrons C. F. B. 1902-3-22 341 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC196109  Lupinus albifrons var. collinus Javier Penalosa 1963-3-30 2725 San Mateo North of Randolph Drive at Hillside Blvd. in SSF 91 Comment
  CAS-BOT-BC196113  Lupinus albifrons var. collinus John H. Thomas 1955-4-6 4833 San Mateo East facing slope of San Bruno Mountain just north of South San Francisco 91 Comment
  SEINET5766825 Image available Lupinus albifrons var. collinus Lewis S. Rose 1931-1 s.n. San Mateo San Francisco Bay region Comment
  UC1073375  Lupinus arboreus George B. Rossbach 1955-5-29 318 San Mateo Ano Nuevo Point; sw San Mateo County Comment
  UC511362  Lupinus arboreus Lyman Benson 1930-6-14 2150 San Mateo San Gregorio; San Gregorio ocean bluffs 30 Comment
  SEINET10451219  Lupinus arboreus Harold W. Rickett 1928-7-10 Rickett s.n. San Mateo La Honda, CA. Comment
  SEINET10488471  Lupinus arboreus Marcus E. Jones 1881-6-30 Jones 2322 San Mateo Comment
  SEINET10488484  Lupinus arboreus Walter Knight, Irja Knight 1964-5-4 Knight s.n. San Mateo San bruno mountains. Nell pubescent from claw to tip. Colma canyon Comment
  UCSC004917  Lupinus arboreus Monica Larenas 1985-6-1 21 San Mateo Hwy 1, 3 mi N of Pescadero State Beach Comment
  JROH2116  Lupinus bicolor John H. Thomas 1977-4-8 18518 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC81971  Lupinus bicolor C. F. Baker 1903-4-8 1921 San Mateo San Andreas Lake Comment
  UC865038  Lupinus bicolor L. R. Abrams 1918-5-1 7053 San Mateo San Bruno Hills; Bay shore road Comment
  RSA31675  Lupinus bicolor A. A. Heller 1907-4-20 8451 San Mateo Near Lake Merced. Comment
  SEINET5628404 Image available Lupinus bicolor A. A. Heller 1907-4-20 8451 San Mateo Near Lake Merced. Comment
  UCD107181  Lupinus bicolor A. A. Heller 1907-4-20 8451 San Mateo near Lake Merced. Comment
  RSA18505  Lupinus bicolor subsp. pipersmithii Carl B. Wolf 1927-7-14 615 San Mateo Summit of Kings Mountain Rd. Comment
  SEINET10484981  Lupinus bicolor var. umbellatus Roderick 1965-3-21 RODERICK s.n. San Mateo Summit at power line ridge. Usually up to about a dozen plants in a colony. Comment
  RSA159408  Lupinus densiflorus var. densiflorus John H. Thomas 1961-5-14 9377 San Mateo Just north of dam on San Mateo Creek. 122 Comment
  UC1294006  Lupinus formosus E. K. Balls 1958-7-22 23592 San Mateo Hwy 5 at turn-off to San Bruno (San Bruno Hills); San Bruno Hills 213 Comment
  SBBG11058  Lupinus formosus D. E. Breedlove 1961-6-18 600 San Mateo 3 mi S of rd to Half Moon Bay on US 5 365 Comment
  UC15897  Lupinus latifolius var. latifolius Alice Eastwood May 1896 San Mateo Crystal Springs Comment
  UC865131  Lupinus microcarpus var. densiflorus Lewis S. Rose 1939-5-13 39112 San Mateo w Burlingame 60 Comment
  CHSC57381  Lupinus nanus Sandy Trimble 1987-4-13 12 San Mateo On s slope of Hwy 84, 8.1 mi w of Hwy 1 and 7.2 mi e of Hwy 35. 335 Comment
  JROH2126  Lupinus nanus John H. Thomas 1967-4-28 12723 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1303142  Lupinus nanus L. R. Abrams 1926-4-19 San Mateo junction of Los Trancos and San Francisquito Creek; jct of Los Trancos and San Francisquito Creek Comment
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Sep 26 2011
  UC398660  Lupinus nanus L. R. Abrams 1914-4-20 5128 San Mateo junction of Los Trancos and San Francisquito Creeks; jct of Los Trancos and San Francisquito Creeks Comment
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Sep 30 2011
  CAS-BOT-BC157981  Lupinus polycarpus Peter Rubtzoff 1979-7-26 9296 San Mateo San Bruno Mountains. Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road junction. In upper par to fEast Fork Colma Creek canyon area 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
  UC201977  Lupinus polyphyllus var. polyphyllus A. D. E. Elmer May, 1903 4444 San Mateo San Pedro Comment
  POM11052  Lupinus succulentus A. D. E. Elmer 1903-06 4681 San Mateo San Pedro. Comment
  UC75229  Lupinus succulentus C. F. Baker Apr 1902 1928 San Mateo Crystal Springs Lake Comment
  SD37926  Lupinus succulentus Delzie Demaree 1932-4-9 2135 San Mateo Comment
  SEINET10969931  Lupinus succulentus Walter Knight, Irja Knight 1964-3-16 Knight s.n. San Mateo San bruno mtns. San bruno pt. Comment
  SEINET12154824  Lupinus succulentus Unknown 1932-1 8978 San Mateo Los Ticiness woods Comment
  SEINET10490986  Lupinus succulentus var. succulentus Smith 1948-4-23 Smith 48142 San Mateo Hwy 1. San Pedro Point, north grade. Comment
  SEINET10837785  Lupinus succulentus var. succulentus Charles Piper Smith 1948-4-20 Smith 48111 San Mateo Hwy 1. San Pedro Point, south slope. Comment
  CHSC59538  Lupinus variicolor Maibelle Williams 1929-5-10 San Mateo Moss Beach. Comment
  RSA21949  Lupinus variicolor Alice Eastwood, John T. Howell 1938-6-26 6076 San Mateo Kings Mt. Comment
  RSA162483  Lupinus variicolor E. K. Balls 1963-5-22 12065 San Mateo 4.1 miles N of Moss Beach, along Hwy 1. 61 Comment
  SEINET10489104  Lupinus variicolor Smith 1947-4-25 Smith 47184 San Mateo Montara, rocky cut, 2.4 mi n. Petals mostly yellow. Comment
  SEINET12162894  Lupinus variicolor E. McClintock, Knight, W.; Knight, I. 1982-1 4644 San Mateo Windy Kamchatka Point, San Bruno Mtn 351 Comment
  JROH4524  Luzula comosa var. comosa John H. Thomas 1967-4-20 12712 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CHSC106625  Luzula subsessilis Peter F. Zika 2010-5-1 24790 San Mateo Above SE shore of Alpine Pond, Santa Cruz Mountains, San Francisco Bay (SnFrB) 660 Comment
  CAS-BOT-BC210033  Luzula subsessilis Peter Rubtzoff 1976-3-28 8450 San Mateo San Bruno Mtns. Saddle area on N side of Guadalupe Canyon Parkway west of Radio Road junction, on E rim of East Fork Colma Creek Canyon Comment
  UC1057747  Luzula subsessilis F. A. Pitelka 1946-4-13 San Mateo one mi n Montara; n of Montara 30 Comment
  RSA0015076  Lythrum californicum L. R. Abrams 1901-09 2219 San Mateo Menlo Park, borders of Bay. Comment
  UCR122578  Lythrum hyssopifolia George K. Helmkamp, E. A. Helmkamp 2001-6-2 6794 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
  CAS-BOT-BC343902  Madia elegans David D. Keck 1931-10-5 1279 San Mateo Crystal Springs Lake, east side Comment
  CAS-BOT-BC343909  Madia elegans Carl B. Wolf 1929-5-17 3713 San Mateo 1 mi. w. of Skyline Blvd. on Alpine Road 304 Comment
  CAS-BOT-BC343913  Madia elegans David D. Keck 1932-6-18 1979 San Mateo Skyline Blvd., at Langley Hill. (S.W. of Stanford University) 600 Comment
  RSA81525  Madia elegans subsp. densifolia James I. McMurphy 1907-8-8 s.n. San Mateo San Francisquito Creek; San Mateo - Santa Clara county line Comment
  JEPS20312  Madia exigua Lewis S. Rose 1956-5-28 56083 San Mateo hills w Redwood City; Emerald Lake 182 Comment
  JROH1039  Madia exigua John H. Thomas 1958-5-10 7141 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1040  Madia exigua John H. Thomas 1958-5-10 7141 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1043  Madia exigua John H. Thomas 1967-5-31 12925 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1046  Madia exigua John H. Thomas 1975-5-26 17903 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1053  Madia exigua John Hunter Thomas 1981-5-19 20609 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1056  Madia exigua John Hunter Thomas 1981-5-25 20636 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM362166  Madia exigua D. D. Keck 1932-5-11 1761 San Mateo Above Searsville Lake, La Honda road, east slope of Santa Cruz Mountains, San Mateo Mountains Comment
  CHSC56970  Madia gracilis Steven Triano 1988-5-24 182 San Mateo Along w side of Old La Honda Road ca 0.6 mi s of Portola Road and 3.8 mi s of Woodside. 201 Comment
  RSA176827  Madia gracilis John H. Thomas 1961-5-5 9222 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto; above Searsville Lake Comment
  CAS-BOT-BC343325  Madia gracilis Gwendolan Newell 1914-6-18 s.n. San Mateo Raymonds ranch, Los Gatos Comment
Read comments
Oct 28 2021
  POM362194  Madia madioides Donald A. Johansen 1932-4-15 680 San Mateo Between Woodside and Kings Mountain Comment
  CAS-BOT-BC345114  Madia sativa David D. Keck 1933-11-2 2628 San Mateo 3.5 mi. S.W. of Pescadero, within 100 m. of ocean Comment
  JEPS40342  Madia sativa L. M. Newlon 1921-1-1 240 San Mateo from Salada to Mussel Rock Comment
  JROH1106  Madia sativa John Hunter Thomas 1981-7-24 20726 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC345117  Madia sativa David D. Keck 1932-8-11 1745 San Mateo Skyline Blvd., about 1 mi. S. of junction with Alpine Creek road, Santa Cruz Mts., Santa Clara--San Mateo Co. line 640 Comment
  CAS-BOT-BC512106  Maianthemum racemosum subsp. amplexicaule George Oberlander 1950-3-18 583 San Mateo Pilarcitos Canyon; San Francisco Watershed Reserve Comment
  SEINET12055169  Maianthemum racemosum subsp. amplexicaule Unknown 1914-1 s.n. San Mateo San Francisquito Creek Comment
  CAS-BOT-BC514156  Maianthemum stellatum H. A. Lewis 1908-4-1 s.n. San Mateo Los Trancos Woods Comment
  CAS-BOT-BC203908  Malacothamnus aboriginum Alice Eastwood; John Thomas Howell 1939-6-30 7435 San Mateo Los Trancos Creek near Stanford University Comment
  UC138309  Malacothamnus davidsonii Hy. Edwards 1896-5-1 95 San Mateo Crystal Springs Comment
  JROH2958  Malacothamnus fasciculatus John H. Thomas 1962-6-6 9906 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
  JROH2967  Malva nicaeensis John Hunter Thomas 1977-6-16 18803 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET7247993  Malva nicaeensis Richard A. Dodge 1957-1 31 San Mateo Canyon in San Bruno City Limits, just south of Sneath Lane, between Junipero Serra Boulevard, and State Highway 5. 183 Comment
  RSA141087  Malvella leprosa John H. Thomas 1960-6-25 8787 San Mateo Redwood City. Along or near a small creek running into Redwood Slough between El Camino Real and railroad tracks, near Maple Street. 8 Comment
  JROH624  Matricaria discoidea John Hunter Thomas 1988-5-3 24434 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Lakeside Laboratory Comment
  CAS-BOT-BC422681  Meconella californica Elizabeth McClintock 1967-4-16 s.n. San Mateo San Bruno Mountain. Buckeye Canyon. 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
  JEPS51536  Meconella californica Ivar Tidestrom 1894-3-22 San Mateo 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
  UCR121590  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
  JROH2169  Medicago polymorpha John H. Thomas 1975-4-19 17792 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2176  Medicago polymorpha John Hunter Thomas 1992-5-14 25229 San Mateo Jasper Ridge Biological Preserve, Stanford University; near boat ramp Comment
  CAS-BOT-BC157958  Medicago polymorpha var. polymorpha Peter Rubtzoff 1977-4-16 8952 San Mateo San Bruno Mountains. Saddle area on N side of Guadalupe Canyon Parkway west of Radio Road junction, along W side of East Fork Colma Creek Canyon Comment
  CAS-BOT-BC269480  Melica californica Walter Knight; Irja Knight 1965-4-25 s.n. San Mateo San Bruno Mountain. Owl's Canyon Comment
  CAS-BOT-BC269481  Melica californica Walter Knight; Irja Knight 1965-5-15 s.n. San Mateo San Bruno Mountain. Pig Ranch Ravine Comment
  CAS-BOT-BC264186  Melica subulata L. R. Abrams 1915-6-14 5560 San Mateo Kings Mountain Road, first bridge Comment
  CDA9445  Melica subulata D. G. Kelch 2002-5-13 s.n. San Mateo Cahill Ridge. 0 Comment
  JROH5311  Melica subulata John Rawlings 2005-5-15 1005 San Mateo Jasper Ridge Biological Preserve, Stanford University; verge of Trail 2 from 100 to 250 yards west of the zoology cabin site 82 Comment
  CAS-BOT-BC264256  Melica torreyana Walter Knight; Irja Knight 1965-5-12 s.n. San Mateo Southwest Canyon, San Bruno Mountain 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
  UCD88813  Melica torreyana A. A. Beetle 1942-6-11 3600 San Mateo Rt. 5, 15 miles south of San Bruno. Comment
  JROH2198  Melilotus indicus John Hunter Thomas 1988-6-2 24497 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2797  Melissa officinalis John H. Thomas 1962-7-15 9919 San Mateo Jasper Ridge Biological Preserve, Stanford University; along San Francisquito Creek below dam Comment
  CAS-BOT-BC389700  Mentha pulegium Lorene Sigal 1969-7-1 s.n. San Mateo Sawyer Camp Road Comment
  CDA20054  Mentha pulegium L. Kuwahara 2002-10-9 PDR 064652 San Mateo San Francisco Bay Area; Along dam of reservoir at Pomponio Ranch, 3300 Pomponio Crk Rd, San Gregorio. 0 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
  JROH2810  Mentha pulegium John H. Thomas 1976-10-16 18398 San Mateo Jasper Ridge Biological Preserve, Stanford University; in Searsville Lake at the mouth of Corte de Madera Creek Comment
  JROH2826  Mentha spicata Carol Zabel 2006-8-23 64 San Mateo Jasper Ridge Biological Preserve, Stanford University; Dennis Martin site Comment
  JROH5838  Mentha suaveolens Ann Lambrecht 2007-8-15 30 San Mateo Jasper Ridge Biological Preserve, Stanford University; Corte Madera Creek Comment
  UCD148357  Mercurialis annua T. C. Fuller 1960-6-23 4542 San Mateo east fence line, Sanchez Adobe House, south side of Linda Mar Blvd., Pedro Valley. Comment
  CAS-BOT-BC438140  Mesembryanthemum nodiflorum William Anderson 1968-7-25 s.n. San Mateo At west approach of Dumbarton Bridge on south side of road. Comment
  CAS-BOT-BC438141  Mesembryanthemum nodiflorum Malcom A. Nobs; S. Galen Smith 1949-8-27 1623 San Mateo East of Redwood City Comment
  CAS-BOT-BC428899  Micranthes californica Ira L. Wiggins 1929-3-23 3369 San Mateo Road to Mud Lake, near Stanford University. Comment
  JROH3907  Micranthes californica John Hunter Thomas 1981-4-5 20279 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along San Francisquito Creek 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
  JROH1127  Micropus californicus var. californicus John Hunter Thomas 1981-5-8 20551 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC348719  Microseris bigelovii Kenton L. Chambers 1956-6-20 1048 San Mateo Pebble Beach near Pescadero Point Comment
  CAS-BOT-BC349019  Microseris douglasii subsp. douglasii A. D. E. Elmer 1903-5-1 4721 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC349031  Microseris douglasii subsp. douglasii John H. Thomas 1961-5-7 9259 San Mateo San Bruno Mountain in northern part of county 396 Comment
  JEPS49068  Microseris douglasii subsp. douglasii Lewis S. Rose 1966-5-2 66037 A San Mateo w Redwood City; Emerald Lake 91 Comment
  JROH1138  Microseris douglasii subsp. douglasii John H. Thomas 1955-5-6 4993 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1145  Microseris douglasii subsp. douglasii John Hunter Thomas 1980-5-8 19958 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC50038  Microseris douglasii subsp. douglasii J. Burtt Davy 1895-4-20 1073 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC349030  Microseris douglasii subsp. douglasii John H. Thomas 1967-5-2 12821 San Mateo Along Skyline Blvd., 0.4 miles south of Black Mountain Road intersection. Hillsborough Comment
  CAS-BOT-BC349148  Microseris douglasii subsp. tenella LeRoy Abrams 1902-5-4 2423 San Mateo Woodside Comment
  JROH1155  Microseris douglasii subsp. tenella John Rawlings, Ann Lambrecht 2007-4-18 1040 San Mateo Jasper Ridge Biological Preserve, Stanford University. Road F in Area H. 170 Comment
  RSA116721  Microseris douglasii subsp. tenella Harry A. Dutton 1900-4-17 s.n. San Mateo Woodside Comment
  UC50013  Microseris douglasii subsp. tenella E. L. Greene 1886-5-9 San Mateo Belmont Comment
  JROH5921  Microsteris gracilis John H. Thomas 1982-3-12 20804 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near [Escobar horse trail gate] fence. Comment
  RSA164764  Mimulus aurantiacus var. aurantiacus Wesley O. Griesel 1963-6-20 814 San Mateo Road from Palo Alto to State Hwy #5 Comment
  JROH4087  Mimulus guttatus Herbert Dengler 1963-5-18 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4092  Mimulus guttatus John Hunter Thomas 1981-4-23 20472 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM5176  Mimulus guttatus A. D. E. Elmer 1903-04 4857 San Mateo Crystal Springs Lake. Comment
  UC306607  Mimulus guttatus A. D. E. Elmer April, 1903 4857 San Mateo Crystal Springs Lake Comment
  RSA217981  Mimulus guttatus Walter Knight, I. Knight 1963-7-14 274 San Mateo Base of Quarry 2. San Bruno Mtn. Comment
  UCD122861  Mimulus primuloides Clyde Elmore 1967-9-14 s.n. San Mateo The Sequoias (Lutheran retirement community), off Portola Road, Woodside. Comment
  JROH1699  Minuartia douglasii John H. Thomas 1967-5-10 12849 San Mateo Jasper Ridge Biological Preserve, Stanford University 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-BC214088  Monardella villosa R. Bacigalupi 1946-7-6 2793 San Mateo Along Edgemar Road, 1 1/2 mi. above Edgemar, northern San Mateo Co. Comment
  RSA18315  Monardella villosa Carl B. Wolf 1927-7-14 596 San Mateo Summit of Kings Mt. at junction with Skyline Drive Comment
  RSA185020  Monardella villosa L. S. Rose 1965-6-15 65080 San Mateo South of parking lot near summit, San Bruno Mountain 366 Comment
  JEPS62416  Monardella villosa subsp. franciscana Dr. L. M. Newlon 1921-1 253 San Mateo Between Salada and Mussel Rock 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
  SEINET10582379  Monardella villosa subsp. franciscana A. Graff 1993-7-13 Graff 183 San Mateo Devil's Slide, in arroyos on inland side of Hwy. 1. Mostly past bloom. Coastal scrub. Comment
  SEINET892709  Monardella villosa subsp. villosa Lewis S. Rose 1950-1 50135 San Mateo Emerald Lake region, hills west of Redwood City 243 Comment
  UC50083  Monolopia gracilens J. Burtt Davy Jun 21 1893-Jun 23 1893 San Mateo Pilarcitos Lake and Canyon Comment
  CAS-BOT-BC508587  Muilla maritima Lewis S. Rose 1965-3-25 s.n. San Mateo Gradalupe Road, San Bruno Mountain Comment
  CAS-BOT-BC101769  Myrica californica W. R. Dudley 1894-9-22 s.n. San Mateo Preston's Ravine, Portola Valley Comment
  CAS-BOT-BC101778  Myrica californica D. E. Breedlove 1973-9-26 35554 San Mateo Pescadero Creek County Park 365 Comment
  CAS-BOT-BC166772  Myrica californica Peter Rubtzoff 1980-12-11 9634 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction, East Fork Colma Creek Canyon. Comment
  JEPS85566  Myrica californica Craig Dremann 1986-8-30 327 San Mateo near Pescadero (Bear Hollow Rd., 1/4 mi. n. of Hwy. 1 intersection) Comment
Read comments
Sep 4 2011
  RSA130858  Myrica californica R. C. Bacigalupi 1922-03 s.n. San Mateo Along coast near lagoon at Arroyo de los Frijoles. Comment
  CAS-BOT-BC101772  Myrica californica Phillip C. Wheeler 1965-7-7 s.n. San Mateo Canyon south of Pig Ranch Comment
  SEINET7040215  Nama demissa A. G. Vestal 1962-3-26 s.n. San Mateo Laguna Salada. San Francisco South Quadrangle UTM Zone 10, 545384mE, 4164305mN. Comment
  CAS-BOT-BC260228  Nassella pulchra W. R. Dudley 1894-5-1 s.n. San Mateo Santa Cruz Mountain Peninsula. Woodside to Crystal Springs Comment
  RSA106988  Nassella pulchra L. S. Rose 1956-5-7 56071 San Mateo Skyline Blvd west of San Mateo. 183 Comment
  UCD87671  Nassella pulchra Lewis S. Rose 1963-4-27 63000 San Mateo Skyline Blvd. West of San Mateo. 91 Comment
  JROH1572  Nasturtium officinale John Hunter Thomas 1978-7-2 19242 San Mateo Jasper Ridge Biological Preserve, Stanford University; on dam Comment
  JROH1574  Nasturtium officinale John Hunter Thomas 1987-4-7 24177 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Searsville Dam Comment
  UC101994  Navarretia heterodoxa Alice Eastwood Jun 1897 San Mateo Crystal Springs Comment
  UC662623  Navarretia heterodoxa L. S. Rose 1941-6-12 41269 San Mateo hills w Redwood City; Emerald Lake 120 Comment
  JROH3215  Navarretia squarrosa John Hunter Thomas 1982-7-3 21063 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2736  Nemophila heterophylla John Hunter Thomas 1991-4-11 24978 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Rattlesnake Rocks Comment
  RSA15266  Nemophila menziesii var. menziesii Carl B. Wolf 1927-3-2 230 San Mateo Above Searsville Lake. Comment
  CAS-BOT-BC219475  Nemophila parviflora John Thomas Howell 1971-4-12 47600 San Mateo Butano State Park, Santa Cruz Mts. Comment
  JROH5862  Nerium oleander Cary Tronson 2012-8-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Near caretakers house along Sand Hill Rd. fence 109 Comment
  CAS-BOT-BC140442  Oemleria cerasiformis John H. Thomas 1967-2-9 12400 San Mateo San Bruno, near intersection of Skyline Blvd. and Berkshire Dr. Comment
  CAS-BOT-BC140448  Oemleria cerasiformis Elizabeth McClintock 1967-4-16 s.n. San Mateo Buckeye Canyon Comment
  CAS-BOT-BC140449  Oemleria cerasiformis W. R. Dudley 1893-4-1 s.n. San Mateo Bear Gulch Road, Santa Cruz Mountains Comment
  UC311169  Oemleria cerasiformis A. D. E. Elmer Mar 1903 4579 San Mateo Woodside Comment
  POM275613  Oemleria cerasiformis Lyman D. Benson 1929-3-5 978 San Mateo Road from Searsville Lake to King's Mountain. Comment
  JROH3082  Oenothera elata subsp. hookeri Fay Gilbert 1920-5-31 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Lake Comment
  JROH3084  Orobanche bulbosa John Hunter Thomas 1977-6-16 18748 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS19482  Orobanche californica subsp. californica Herbert L. Mason 1927-7-28 3983 San Mateo Pigeon Point. Comment
  CAS-BOT-BC238396  Orthocarpus Charles Piper Smith 1950-5-15 50143 San Mateo Pescadero Creek Bridge - Highway 1; 3.9 miles south Comment
  RSA402011B  Orthocarpus erianthus Glenn A. Gorelick 1967-4-15 s.n. San Mateo San Bruno Mts. overlooking Daly City near San Francisco. Comment
  POM126837  Orthocarpus erianthus var. roseus R. L. Pendleton 1907-4-20 618 San Mateo Ocean View. 122 Comment
  RSA155567  Orthocarpus erianthus var. roseus L. S. Rose 1961-4-5 61034 San Mateo San Bruno Mountains. 366 Comment
  RSA516520  Orthocarpus floribundus W. L. Jepson 1919-4-19 8231 San Mateo S San Francisco. Comment
  SEINET10829382  Orthocarpus floribundus Robert F. Hoover 1939-4-21 Hoover 4057 San Mateo 2 miles south of Colma. Comment
  RSA6290  Orthocarpus pusillus D. D. Keck 1932-5-11 1766 San Mateo 2 miles north of San Gregornio. Comment
  JROH294  Osmorhiza berteroi John H. Thomas 1963-6-23 10168 San Mateo Jasper Ridge Biological Preserve, Stanford University; near Westridge end of ridge Comment
  JROH295  Osmorhiza berteroi John Hunter Thomas 1985-5-2 23580 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA459008  Osmorhiza berteroi E. S. Spalding 1924-6-28 s.n. San Mateo San Mateo, La Honda Comment
  OBI7876  Oxalis corniculata G. L. Parsons 1976-5-31 125 San Mateo San Mateo Comment
  JEPS79567  Oxalis oregana Edward Lee with A. Carter, E. Crum, and C. Belshaw 1936-1-26 1720 San Mateo e side Cahill Ridge (Kings Mt. Rd (2.6 mi out of woodside)) Comment
  POM139435  Oxalis oregana A. D. E. Elmer 1903-03 4532 San Mateo Portola Comment
  POM353456  Oxalis oregana Paul C. Silva 1948-1-31 2630 San Mateo Old La Honda Grade, 1/2 mile south of Skyline Blvd 488 Comment
  CAS-BOT-BC253969  Parapholis incurva Phillip C. Wheeler 1965-5-8 s.n. San Mateo San Bruno Mountain. Sierra Point Comment
  RSA177004  Paspalum distichum John H. Thomas 1964-11-15 10521 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto Comment
  UCD88912  Paspalum distichum W. R. Dudley 1903-1 s.n. San Mateo Santa Cruz Mountain Peninsula. Searsville Lake. 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
  JROH4103  Pedicularis densiflora John H. Thomas 1959-4-5 7663 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  LA209468  Pedicularis densiflora L. R. Abrams; 1914-3-1 5058 San Mateo Kings Mountain Road 152 Comment
  RSA117092  Pedicularis densiflora Carl B. Wolf 1927-3-2 235 San Mateo Above Searsville Lake. Comment
  UCR131712  Pedicularis densiflora C. B. Wolf 1927-2-26 00221 San Mateo La Honda Grade 305 Comment
  UCR136713  Pedicularis densiflora L. S. Rose 1948-3-31 48031 San Mateo San Francisco Bay Region, Millbrae Highlands 91 Comment
  JROH4106  Pedicularis densiflora Duncan M. Porter 1961-1-18 736 San Mateo Jasper Ridge Biological Preserve, Stanford University; Westridge end of Jasper Ridge Comment
  SEINET12270441  Pedicularis densiflora Unknown 1930-1 7320 San Mateo Jasper Ridge Comment
  CAS-BOT-BC266669  Pedicularis dudleyi W. R. Dudley 1903-5-2 s.n. San Mateo Santa Cruz Peninsula. Near fork of road to old Page Mill 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
  JEPS82090 Image available Pedicularis dudleyi Rimo Bacigalupi with J. H. Thomas and L. Heckard 1961-5-23 7712 San Mateo 1/3 mi n of its confulence with Pescadero Creek (e side of Peters Creek); Peters Creek 134 Comment
  RSA125134  Pedicularis dudleyi E. F. Sprague 1956-5-28 1701 San Mateo Portola State Park, about campground headquarters 305 Comment
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Mar 2 2010
  RSA0006087  Pedicularis dudleyi A. D. E. Elmer 1903-06 4289 San Mateo Iverson's Place, Pescadero Creek. Comment
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Jun 13 2020
  CAS-BOT-BC207028  Pelargonium vitifolium Roland M. Block 1894-5-1 s.n. San Mateo King's Mountain Comment
  JROH96  Pellaea andromedifolia John H. Thomas 1971-4-25 15784 San Mateo Jasper Ridge Biological Preserve, Stanford University. Comment
  JROH6183  Pellaea mucronata var. mucronata John Rawlings 2017-12-19 2308 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near south border of Preserve just east of Westridge fork of Corte Madera Creek. 134 Comment
  CDA35479  Pennisetum villosum Ed Finley 1992-11-1 PDR# 1013531 San Mateo South San Francisco; north of Oyster Point Blvd., Southern Pacific Railroad right-of-way. 0 Comment
  SJSU14193  Pentachaeta bellidiflora Toni Corelli 1989-4-2 201 San Mateo watershed triangle between Edgewood & Canada Rds 170 Comment
  UC1495039  Pentachaeta bellidiflora Susan Sommers and Toni Corelli 1983-4-2 San Mateo w of middle of bend in Hwy 280 s Edgewood Road overcrossing; Woodside Quad., San Francisco Water District property 121 Comment
  CAS-BOT-BC222703  Perideridia gairdneri subsp. gairdneri V. F. Hesse 1954-7-30 1344 San Mateo Near Pebble Beach 15 Comment
  JROH315  Perideridia kelloggii John Hunter Thomas 1991-8-4 25077 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC413606  Persicaria amphibia Josephine D. Randall 1907-7-23 287 San Mateo Santa Cruz Peninsula. Crystal Springs Lake Comment
  JROH3257  Persicaria amphibia John Hunter Thomas 1992-7-24 25386 San Mateo Jasper Ridge Biological Preserve, Stanford University. Boat ramp. Comment
  JROH3268  Persicaria lapathifolia W. R. Dudley 1909-10-31 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Searsville Lake. Comment
  JROH3280  Persicaria maculosa Toni Corelli 2004-10-20 281 b San Mateo Jasper Ridge Biological Preserve, Stanford University; east of Road C, below low flow crossing, on a moist embankment 80 Comment
  JROH3283  Persicaria punctata John H. Thomas 1976-10-16 18414 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 fireplace ruins downstream. Comment
  CAS-BOT-BC419390  Persicaria punctata Ira L. Wiggins 1974-10-27 22132 San Mateo Bed of San Francisquito Creek, along line between Palo Alto and Mrnlo [Menlo] Park and between San Mateo and Santa Clara Counties, near Pope Street bridge Comment
  JROH1164  Petasites frigidus var. palmatus Carol Zabel 1989-8-11 27 San Mateo Jasper Ridge Biological Preserve, Stanford University; San Francisquito Creek near confluence with Bear Creek Comment
  RSA116637  Petasites palmatus W. R. Dudley 1894-3-23 s.n. San Mateo By La Honda Creek. Santa Cruz Mountain Peninsula. Comment
  POM65447  Phacelia californica C. F. Baker 1902-5-1 690 San Mateo Crystal Springs Lake. Comment
  RSA152207  Phacelia californica John H. Thomas 1961-5-7 9313 San Mateo San Bruno Mountain, in northern part of county. 305 Comment
  SEINET12280043  Phacelia californica Unknown 1932-1 8996 San Mateo Between Sky Line Drive and Half Moon Bay Comment
  UC24324  Phacelia ciliata var. ciliata E. L. Greene May 1886 San Mateo Belmont Comment
  UC1084388  Phacelia divaricata G. Thomas Robbins 1937-4-11 96 San Mateo near Spring Valley Lakes (along road to Woodside) Comment
  JROH2759  Phacelia imbricata var. imbricata John Rawlings, Ann Lambrecht 2010-6-23 0931 San Mateo Jasper Ridge Biological Preserve, Stanford University. West of blue bridge on Trail 19, several yards uphill from Rd C 91 Comment
  CDA34191  Phacelia malvifolia D. G. Kelch, David Gernandt, Steffi Ickert-Bond, Yingli Guo 2011-4-22 11 .172 San Mateo Swanton Rd just S of Ano Nuevo above Weddell Creek. Comment
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Sep 15 2021
  POM289344  Phacelia malvifolia Lyman Benson 1937-6-27 8392 San Mateo Summit west of Belmont; Santa Cruz Mt. Range; S. F. Bay Watershed. 152 Comment
  JROH5366  Phalaris aquatica John Hunter Thomas 1983-4-3 21306 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near Main Gate along Sand Hill Rd. Comment
  RSA187374  Phalaris aquatica John H. Thomas 1958-8-1 7375 San Mateo Just N of mouth of San Gregorio Creek 30 Comment
  JROH5800  Phalaris aquatica John Rawlings 2005-5-15 0800 San Mateo Jasper Ridge Biological Preserve, Stanford University. Rd F through oak woodland, 7 yards east of its intersection with the south terminus of Trail 15 Comment
  UCD88566  Phalaris californica P. B. Kennedy 1916-5-1 s.n. San Mateo Crocker Estate, Burlingame. Comment
  JROH5855  Phalaris paradoxa Herb Dengler 1980-6-20 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; ca. 100 yards due N. of 2nd enclosure Comment
  SD38530  Pholistoma auritum var. auritum Marie Cummings 1933-4-24 3729 San Mateo San Francisquito Creek, San Mateo and Santa Clara Cos. Comment
  JROH4293  Phoradendron serotinum subsp. tomentosum John H. Thomas 1975-1-14 17674 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCD18545  Phyla nodiflora Roman Gankin 1950-7-8 13 San Mateo city of Menlo Park, Hermosa Way, along roadside. 30 Comment
  UCD138379  Phyllospadix scouleri A. Frederick 1924-10-26 s.n. San Mateo Moss Beach. Comment
  UC1974569  Phyllospadix torreyi Megan Williams 2002-11-21 San Mateo Pigeon Point Comment
  UCD138387  Phyllospadix torreyi R. V. Parker 1953-4-15 s.n. San Mateo Moss Beach. Comment
  RSA15202  Pickeringia montana var. montana Carl B. Wolf 83 San Mateo On the La Honda Grade. Comment
  SEINET3871791  Pinus attenuata K. Allred 1975-1-3 1267 San Mateo Half Moon Bay, Dune Beach.; 0 Comment
  CDA33410  Pinus radiata D. G. Kelch, David Gernandt, Steffi Ickert-Bond, Yingli Guo 2011-4-22 11 .178-B San Mateo Swanton Rd just S of Ano Nuevo above Weddell Creek. Comment
  JEPS48202  Pinus radiata W. L. Jepson 1910-8-18 4166 San Mateo Ano Nuevo Creek Comment
  JROH121  Pinus radiata John Hunter Thomas 1979-9-9 19730 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB23893  Pinus radiata Haller, John 1967-10-7 San Mateo Coastways Ranch near Ano Nuevo Creek, 0.5 miles inland from Ano Nuevo Bay, about 20 miles by road northwest of Santa Cruz 30 Comment
  CAS-BOT-BC136602  Piperia michaelii Josephine D. Randall 1907-7-4 279 San Mateo Field redacted by CAS, contact the data manager for more information Comment
  JEPS125908  Pittosporum crassifolium D. W. Taylor 2002-3-30 17961 San Mateo Sea bluff on S edge outlet of Martini Creek, Montara State Beach Comment
  CAS-BOT-BC135929  Pittosporum tenuifolium Elizabeth McClintock; Paul Reeberg 1989-8-31 s.n. San Mateo Willow Pond - San Bruno Mountains Comment
  UC78190  Plagiobothrys chorisianus K. Brandegee 1892-4-9 San Mateo South San Francisco Comment
  CAS-BOT-BC228117  Plagiobothrys chorisianus J. H. Thomas 1965-4-13 10564 San Mateo To the E of Broadway Exit, Burlingame Comment
  RSA320763  Plagiobothrys chorisianus Robert A. Norris 1984-3-21 4650 San Mateo along trail in saddle between Parking Lot (and summit) and Blue Blossom Hill, San Bruno Mountains 305 Comment
  JROH1408  Plagiobothrys chorisianus var. hickmanii John H. Thomas 1967-4-28 12726 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SEINET7076093  Plagiobothrys chorisianus var. hickmanii 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
  JROH1430  Plagiobothrys nothofulvus John Hunter Thomas 1988-4-7 24378 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  JROH1433  Plagiobothrys nothofulvus John Hunter Thomas 1991-4-11 24979 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  POM287296  Plagiobothrys nothofulvus Lyman Benson 1930-5-1 2055 San Mateo Stanford University. Mt. Range: San Lorenzo. 122 Comment
  CAS-BOT-BC389766  Plagiobothrys tenellus R. D. Hennessey 1964-4-26 s.n. San Mateo Area where Pilarcitos Creek empties into ocean Comment
  JROH3109  Plantago erecta John H. Thomas 1957-4-16 6656 San Mateo Jasper Ridge Biological Preserve, Stanford University; on top of ridge and adjacent slopes 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
  POM283963  Plantago erecta Arthur L. Cohen 1935-4-21 623 San Mateo Jasper Ridge, Stanford University. Santa Cruz Mtn Range, San Francisco Bay Watershed. 152 Comment
  RSA176597  Plantago hirtella var. galeottiana John H. Thomas 1964-6-19 10433 San Mateo Near Pigeon Pt. Lighthouse. Comment
  RSA246718  Plantago hirtella var. galeottiana Robert F. Thorne, Percy C. Everett 1965-8-1 35073 San Mateo 21.5 miles S of Golden Gate Bridge. 69 Comment
  SEINET6205137  Plantago hookeriana var. californica L. S. Rose 1965-1 65056 San Mateo San Bruno Mtn, N end Comment
  UC1125643  Plantago lanceolata N. K. Carlson 1935-6-29 100 San Mateo 1.5 mi se Pescadero Pt.; Santa Cruz Quad. 91 Comment
  UCD164599  Plantago major Peter Rubtzoff; Roman Gankin 1975-9-11 8371 San Mateo San Bruno Mountains. Pond NW of and across old Guadalupe Road from 'Saddle' area (which is located on N side of Guadalupe Canyon Parkway, W of Radio Road junction). Comment
  SD39917  Plantago maritima Edith A. Purer 1933-7-27 5364 San Mateo Near Pigeon Point. Comment
  CAS-BOT-BC92016  Platystemon californicus Elizabeth McClintock 1965-3-28 s.n. San Mateo San Bruno Mountain. In Devil's Arroyo. Comment
  CAS-BOT-BC92017  Platystemon californicus Elizabeth McClintock 1965-6-13 s.n. San Mateo San Bruno Mountain. Colma Canyon. Comment
  SD38887  Plectritis ciliosa Cumming, Mc Callum 1933-5-10 3716 San Mateo Near Spring Valley lakes Comment
  JROH4242  Plectritis congesta subsp. brachystemon John H. Thomas 1974-5-3 17239 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4244  Plectritis congesta subsp. brachystemon John Hunter Thomas 1979-5-10 19546 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM88008  Plectritis congesta subsp. nitida L. R. Abrams 1902-5-11 2457 San Mateo Crystal Springs. Comment
  POM296628  Poa Lyman Benson 1935-5-5 6536 San Mateo Lake Searsville; Santa Cruz Mt. Range. S. F. Bay watershed 152 Comment
  UCD92187  Poa August L. Hormay 1932-5-29 s.n. San Mateo San Bruno to San Francisco Bay Shore Highway. Comment
  HSC10627  Poa annua P. A. Murphy 1965-4-12 1 San Mateo Half Moon Bay. Comment
  JEPS71266  Poa annua unknown 1919-7-22 211 San Mateo Ano Nuevo Comment
  JROH5395  Poa annua John H. Thomas 1963-4-17 10036 B San Mateo Jasper Ridge Biological Preserve, Stanford University. Near the "riders shack" at the Searsville end of the ridge. Comment
  UCD163746  Poa annua Peter Rubtzoff 1988-5-3 9911 San Mateo San Bruno Mountain, 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road Junction, near old Guadalupe Road in the northwest part of the 'Saddle' area, east of Saddle Trail Junction. Comment
  CAS-BOT-BC254906  Poa bulbosa W. L. Plummer 1963-3-27 s.n. San Mateo Alvin Peters property, Skyline Boulevard, Redwood City Comment
  CAS-BOT-BC246708  Poa howellii Roxana S. Ferris 1920-4-23 1951 San Mateo Santa Cruz Mountain Peninsula. Bridge in Alpine Road along Corte Madera Cr. 365 Comment
  JROH5408  Poa howellii H. J. Dengler 1961-5-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; 20' above (S.W.) of San Francisquito Creek, and immediately above Tiger Lily site where there is a seep beneath a large laurel. 77 Comment
  RSA135745  Poa kelloggii Roxana S. Ferris 1920-4-26 1963 San Mateo Near mouth of Canon of Pescadero Creek 244 Comment
  CAS-BOT-BC247422  Poa pratensis Phillip C. Wheeler 1965-5-23 s.n. San Mateo San Bruno Mountain. No. West Radio Road Comment
  SEINET10855247  Poa scabrella LeRoy R. Abrams Abrams 1162 San Mateo Menlo Park-reservoir. Comment
  RSA135725  Poa secunda W. R. Dudley 1900-3-18 s.n. San Mateo San Andreas Lake Comment
  CAS-BOT-BC243116  Poa secunda subsp. secunda John H. Thomas 1971-5-2 15839 San Mateo Near the intersection of Canada and Edgewood roads, about 3 miles W from Redwood City 152 Comment
  JROH6180  Poa secunda subsp. secunda John Rawlings 2004-5-8 796 San Mateo Jasper Ridge Biological Preserve, Stanford University; east serpentine about 150 m west of Escobar Gate; 166 Comment
  JEPS101813  Poa unilateralis Dean W. Taylor 2000-4-25 17440 San Mateo along dirt road 1 mi W of North Peak, Montara Mountain 411 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
  POM65523  Polemonium carneum A. D. E. Elmer 1903-07 4771 San Mateo Pilarcitos Stone Dam. Comment
  POM204332  Polygala californica I. L. Wiggins 1929-7-4 3781 San Mateo 4 miles W of La Honda on hill road to Pescadero Beach. Comment
  UC17523  Polygala californica J. Burtt Davy Jun 21 1893-Jun 23 1893 1145 San Mateo Pilarcitos Lake and Canyon Comment
  POM165063  Polygonum amphibium var. stipulaceum A. D. E. Elmer 1903-07 4650 San Mateo San Pedro. Comment
  CAS-BOT-BC414106  Polygonum aviculare subsp. aviculare J. H. Thomas 1960-6-25 8784 A San Mateo Redwood City. Near Main and Stambaugh sts. Comment
  RSA14508  Polygonum convolvulus I. L. Wiggins 1935-8-24 8159 San Mateo Roadside 2 miles E of Half Moon Bay. Comment
  UC1101144  Polygonum lapathifolium Herbert L. Mason and Verne Grant 1946-8-28 13089 San Mateo s San Francisco (pond on Santa Cruz-Daly City Road #5) Comment
  CAS-BOT-BC109246  Polygonum paronychia Elizabeth McClintock 1965-6-13 s.n. San Mateo San Bruno Mountains. Colma Canyon. Comment
  POM144853  Polygonum punctatum C. F. Baker 1902-10-20 1858 San Mateo Searsville. Comment
  UC168662  Polygonum punctatum C. F. Baker 1903-10-20 1857 San Mateo Searsville Comment
  CAS-BOT-BC76804  Polypodium glycyrrhiza W. R. Dudley 1898-3-5 s.n. San Mateo Santa Cruz Peninsula - King's Mountain Comment
  CAS-BOT-BC72109  Polypodium scouleri Elizabeth McClintock 1965-3-14 s.n. San Mateo San Bruno Mt., Cable Ravine 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
  CAS-BOT-BC237344  Polypogon monspeliensis Ned Cahill 1974-5-18 289 San Mateo Near the intersection of Canada and Edgewood roads, about 3 miles W from Redwood City Comment
  CAS-BOT-BC237347  Polypogon monspeliensis Margaret A. Barry 1937-6-22 176 San Mateo Coal Mine Ridge Comment
  JROH5441  Polypogon monspeliensis John H. Thomas 1963-6-23 10160 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5451  Polypogon monspeliensis John Hunter Thomas 1981-7-12 20685 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near boat dock. Comment
  SEINET10593598  Polypogon monspeliensis Delzie Demaree 1932-5-22 Demaree 9167 San Mateo Mud Lakes Los Francos Woods. Mud Lakes Comment
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Nov 1 2021
  CAS-BOT-BC237588  Polypogon viridis George Oberlander 1950-6-3 1028 San Mateo San Francisco Watershed Reserve. Upper Crystal Spring Lake Comment
  SJSU4367  Polypogon viridis A. J. Cortopassi 1957-5-17 8 San Mateo Canyon Rd, Burlingame Comment
  CAS-BOT-BC72113  Polystichum Peter Rubtzoff; Patricia Fallon 1987-8-26 9844 San Mateo San Bruno Mountains, East Fork Colma Creek Canyon Comment
  CAS-BOT-BC72152  Polystichum californicum Ynez Henderson 1920-5-1 s.n. San Mateo Las Trancos Creek Comment
  CAS-BOT-BC72229  Polystichum dudleyi Alice Eastwood 1933-5-31 s.n. San Mateo Butano Canyon Comment
  SD43036  Polystichum munitum Delzie Demaree 1932-2-14 San Mateo Kings Mt. Comment
  CAS-BOT-BC76611  Polystichum munitum Walter Knight; Irja Knight 1963-7-14 s.n. San Mateo San Bruno Mountain - Quarry 3 Comment
  CAS-BOT-BC76645  Polystichum munitum Elizabeth McClintock 1965-3-28 s.n. San Mateo San Bruno Mountain - Trillium Gulch Comment
  RSA157754  Polystichum munitum I. L. Wiggins 1925-5-24 1731 San Mateo Along county road from Pescadero to Pebble Beach along rich swamp land just before coming to the artichoke lands of the American Produce Co. Comment
  UCD164339  Polystichum munitum Peter Rubtzoff 1976-10-5 8905 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction, upper part of East Fork Colma Creek Canyon. Comment
  JROH3361  Portulaca oleracea John Hunter Thomas 1985-8-7 23708 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UCSB271  Potamogeton amplifolius McPherson, D. 1960-8-1 San Mateo Ventura Comment
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2
  CAS-BOT-BC267165  Potamogeton foliosus W. R. Dudley 1906-10-12 s.n. San Mateo Santa Cruz Mountain Peninsula. Mud Lakes, Coalmine Ridge, Pond 1 Comment
  JROH5512  Potamogeton foliosus subsp. foliosus W. R. Dudley 1893-7-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC453678  Potamogeton gramineus W. R. Dudley 1910-5-26 s.n. San Mateo Santa Cruz Mountain Peninsula. Coal Mine Ridge near Black Mountain Comment
  JROH5514  Potamogeton illinoensis John Hunter Thomas 1981-7-12 20711 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC453836  Potamogeton nodosus Ira L. Wiggins; Roxana S. Ferris 1939-8-2 9292 San Mateo Ano [Ano] Nuevo Point Comment
  UC1618019  Potentilla anserina Donald G. Nelson 1939-6-14 617 San Mateo 3 mi s of San Francisco County line (Skyline Boulevard, due e of Mussel Rock on the coast); Skyline Boulevard Comment
  CAS-BOT-BC141936  Potentilla anserina subsp. pacifica J. H. Thomas 1949-6-4 590 San Mateo Along coast, 1.4 miles S. of road to Pescadero Comment
  CAS-BOT-BC144833  Potentilla rivalis George Oberlander 1950-3-18 560 San Mateo Pilarcitos Canyon 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
  JROH4675  Prosartes hookeri John Hunter Thomas 1981-4-5 20258 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC516346  Prosartes hookeri D. D. Davis 1903-5-2 s.n. San Mateo Near La Honda, Santa Cruz Peninsula Comment
  CAS-BOT-BC516360  Prosartes hookeri W. R. Bentley 1957-5-11 83 San Mateo La Honda Road, 1/2 mile east of La Honda 152 Comment
  JROH4680  Prosartes hookeri John Hunter Thomas 1991-4-25 25000 San Mateo Jasper Ridge Biological Preserve, Stanford University. Redwood areas near San Francisquito Creek below dam Comment
  SJSU9997  Prosartes smithii R. L. Roney 1974-4-27 San Mateo N side of La Honda Creek 457 Comment
  POM139632  Prunus A. D. E. Elmer 1903-07 4773 San Mateo Pilarcitos Stone Dam. Comment
  CAS-BOT-BC154496  Prunus ilicifolia Margaret A. Barry 1937-6-24 186 San Mateo North slope on Los Trancos Creek on Coal Mine Ridge Comment
  CAS-BOT-BC154503  Prunus ilicifolia Phillip Wheeler 1965-6-7 s.n. San Mateo Between Owls Canyon and Buckeye Canyon Comment
  UC1128422  Prunus ilicifolia A. Wright 1928-9-16 San Mateo San Andreas Lake 152 Comment
  CAS-BOT-BC156354  Prunus virginiana var. demissa Phillip C. Wheeler 1965-5-12 s.n. San Mateo Sierra Point - near canyon Comment
  CAS-BOT-BC156357  Prunus virginiana var. demissa D. E. Breedlove 1974-5-13 36207 San Mateo San Pedro Valley Park, Pacifica 152 Comment
  CAS-BOT-BC356858  Pseudognaphalium californicum A. D. E. Elmer 1903-6-1 4291 San Mateo Crystal Springs Lake Comment
  JROH752  Pseudognaphalium californicum D. D. Davis 1903-5-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; Searsville Ridge Comment
  JROH757  Pseudognaphalium californicum John H. Thomas 1967-5-10 12851 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU10081  Pseudognaphalium californicum R. W. Henkel 1967-5-28 105 San Mateo Alpine Rd 4 mi N of junction with Skyline Blvd Comment
  CAS-BOT-BC357124  Pseudognaphalium luteoalbum Fred Hemphill 1973-4-22 841 San Mateo San Carlos. Chaparral area north of Malabar Rd. and Melendy Dr. 207 Comment
  JROH774  Pseudognaphalium luteoalbum John H. Thomas 1964-11-15 10527 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH790  Pseudognaphalium luteoalbum John Rawlings 2011-12-23 1099 San Mateo Jasper Ridge Biological Preserve, Stanford University. Boat dock near Searsville Lab (Searsville Lab Landing). 104 Comment
  CAS-BOT-BC357127  Pseudognaphalium luteoalbum Philip Wheeler 1965-6-13 s.n. San Mateo San Bruno Mountain. Colma Canyon Comment
  CAS-BOT-BC357133  Pseudognaphalium luteoalbum Ira L. Wiggins 1973-6-24 22027 San Mateo Gravelly bed of San Francisquito Creek, about 60 m above Pope Street bridge, along line between Santa Clara and San Mateo Counties Comment
  SBBG45073  Pseudognaphalium luteoalbum L. S. Rose 1936-2-12 San Mateo Burlingame 91 Comment
  SEINET3145218  Pseudognaphalium ramosissimum L. S. Rose 1935-8-13 35568 San Mateo Salada 30 Comment
  RSA18445  Pseudognaphalium stramineum C. B. Wolf 1927-6-29 563 San Mateo South of Pebble Beach near Pescadero Comment
  UC917227  Pseudognaphalium stramineum J. D. Skoss 1948-7-25 44 San Mateo Montara Comment
  UCSC007772  Pseudognaphalium stramineum Becky Hendricks 2012-5-16 s.n. San Mateo Ano Nuevo State Park Comment
  CAS-BOT-BC85908  Pseudotsuga menziesii W. R. Dudley 1893-12-3 s.n. San Mateo Santa Cruz Mountain Peninsula, Bear Gulch Comment
  RSA15295  Pseudotsuga menziesii C. B. Wolf 1927-4-3 265 San Mateo 1 mile above La Honda. Santa Cruz Mountains Comment
  UCR201596  Pseudotsuga menziesii June Latting 1972-4-21 s.n. San Mateo Central Coast, Santa Cruz Mountains, Pseudotsuga study site 777 Comment
  JROH127  Pseudotsuga menziesii var. menziesii John Hunter Thomas 1981-2-14 20222 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC362025  Psilocarphus tenellus Lewis S. Rose 1933-5-3 33140 San Mateo Montara Comment
  JROH1177  Psilocarphus tenellus John H. Thomas 1956-4-7 5611 A San Mateo Jasper Ridge Biological Preserve, Stanford University; open serpentine area on top of ridge and adjacent slopes Comment
  CAS-BOT-BC362021  Psilocarphus tenellus Elizabeth McClintock 1965-4-11 s.n. San Mateo San Bruno Mountain. Crocker Hills. Near Guadalupe Road Comment
  CDA36281  Puccinellia maritima Michael Perlmutter 2011-6-15 San Mateo South San Francisco; Oyster Point Marina. 0 Comment
  UCD92954  Puccinellia maritima A. A. Beetle 1946-6-4 4278 San Mateo San Mateo City limits on San Mateo Bridge approach. On San Francisco Bay margin. Comment
  RSA195549  Pyracantha angustifolia John H. Thomas 1960-7-5 8809 San Mateo Near intersection of Canada road and Edgewood Road, 4 miles Westward from Redwood City. 91 Comment
  RSA181251  Pyracantha koidzumii John H. Thomas 1963-10-4 10268 San Mateo Along Bayshore Freeway about 1/2 mile SE of its intersection with HIllsdale Blvd. Comment
  CAS-BOT-BC460839  Pyrola aphylla W. R. Dudley 1895-6-7 s.n. San Mateo Santa Cruz Peninsula: 4000 feet above Iverson's; Butano Ridge Comment
  SEINET8229663  Pyrola aphylla A. D. E. Elmer 1903-1 4297 San Mateo Pescadero. Comment
  CDA28814  Pyrola picta D. G. Kelch 2009-6-9 9 .405 San Mateo Santa Cruz Mts.; Chert outcrop and adjacent mixed evergreen forest along Skyline Blvd ~1 km W of Skegg s Point. Comment
  UC306551  Pyrola picta A. D. E. Elmer 1903-6-1 4297 San Mateo Pescadero Comment
  UCD22449  Quercus agrifolia Roman Gankin; Ken Himes, Toni Corelli 2003-8-23 1401 San Mateo About 0.4 mi above Pilarcitos Lake Dam on main road to '5 points' crossroads on downside edge of roadway. Comment
  UCD45146  Quercus agrifolia Edmond W. Holm 1993-11-26 s.n. San Mateo California, San Mateo Co.; Huddart Park, near Sequoia Picnic Area, on an east-facing slope, with redwoods and bay trees nearby; rather shrub-like, 12-15 ft. tall, with six trunks, 3-6 inches diameter at base. Comment
  JROH5803  Quercus douglasii John Rawlings, Bill Gomez 2016-7-28 1911 A San Mateo Jasper Ridge Biological Preserve, Stanford University; north side Rd F in blue oak woodland west of serpentine prairie 182 Comment
  POM270122  Quercus douglasii Lyman Benson 1932-8-1 4033 San Mateo Stanford University. 122 Comment
  CAS-BOT-BC94271  Quercus durata Ned Cahill 1974-4-19 143 San Mateo near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City Comment
  SJSU1086  Quercus durata C. W. Sharsmith 1951-4-6 6638 San Mateo Woodside Hills, 3 mi E of Woodside 182 Comment
  JROH2489  Quercus durata var. durata John H. Thomas 1975-5-2 17851 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2490  Quercus durata var. durata John H. Thomas 1975-5-26 17906 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2493  Quercus durata var. durata John Hunter Thomas 1984-10-14 23484 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC105388  Quercus kelloggii W. R. Dudley 1894-10-1 s.n. San Mateo Santa Cruz Mountain Peninsula, near Woodside road Comment
  CAS-BOT-BC105389  Quercus kelloggii W. R. Dudley 1893-4-1 s.n. San Mateo Near Searsville Comment
  CAS-BOT-BC105393  Quercus kelloggii Josephine D. Randall 1907-3-9 114 San Mateo Santa Cruz Mountain Peninsula, Searsville Road to Woodside Comment
  CAS-BOT-BC105403  Quercus kelloggii J. H. Thomas 1955-3-21 4694 San Mateo New La Honda Road above Searsville and Skyline Blvd. 1.8 miles from Searsville. E slope of the Santa Cruz Mountains 274 Comment
  JROH2502  Quercus kelloggii John H. Thomas 1971-8-7 16017 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2504  Quercus kelloggii John Hunter Thomas 1981-2-14 20218 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2511  Quercus kelloggii John Hunter Thomas 1988-4-6 24372 San Mateo Jasper Ridge Biological Preserve, Stanford University; along road near dam Comment
  POM270254  Quercus kelloggii Lyman Benson 1930-5-3 21100 San Mateo Above Woodside, Mt. Range: Santa Cruz 366 Comment
  UCSB1185  Quercus kelloggii Haller, John 1950-4-26 San Mateo Stanford University, near highway bridge over cree, at edge of golf course Comment
  CAS-BOT-BC62888  Quercus lobata W. R. Dudley 1901-5-4 s.n. San Mateo Coal Mine Canyon Comment
  CAS-BOT-BC62892  Quercus lobata Paul Reeberg 1989-5-2 s.n. San Mateo Bitter Cherry Ridge, San Bruno Mountain 198 Comment
  JROH2519  Quercus lobata John H. Thomas 1971-8-5 16011 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2521  Quercus lobata John H. Thomas 1977-4-28 18566 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM270142  Quercus lobata Lyman Benson 1932-8-1 4032 San Mateo Stanford University, Santa Cruz Mt. Range, Corte Madera Creek watershed. 122 Comment
  RSA101043  Quercus lobata G. Oberlander 1949-7-30 346 San Mateo Southern boundary, San Francisco Watershed Reserve. Comment
  UC1083146  Quercus lobata Herbert L. Mason 1924-10-8 1109 San Mateo between Stanford University and Jasper Ridge Comment
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Sep 19 2011
  CAS-BOT-BC134784  Quercus wislizeni W. R. Dudley 1898-1-1 s.n. San Mateo Santa Cruz Peninsula. On hill above little Butano Creek Comment
  CAS-BOT-BC134787  Quercus wislizeni James McMurphy 1909-5-26 s.n. San Mateo San Bruno Mountainin northern part of county. 396 Comment
  CDA29062  Quercus wislizeni D. G. Kelch 2009-6-9 9 .398 San Mateo Santa Cruz Mts.; Chert outcrop and adjacent mixed evergreen forest along Skyline Blvd ~1 km W of Skegg s Point. Comment
  HSC23883  Quercus wislizeni Mary Katherine Wicksten 1971-6-16 16 San Mateo Huddart Park, dry gully by horse ring Comment
  NY201784  Quercus wislizeni J. B. Walker 1994-8-15 909 San Mateo Skyline Rd, mile marker 13.84, N of Sky Londa 100 Comment
  JROH5864  Quercus wislizeni var. frutescens Toni Corelli 2003-2-21 257 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail c Comment
  CAS-BOT-BC362548  Rafinesquia californica Philip C. Wheeler 1965-5-11 s.n. San Mateo San Bruno Mountain. Pig Ranch Ravine Comment
  CAS-BOT-BC362549  Rafinesquia californica John R. Barth 1963-6-3 56 San Mateo Coal Mine Ridge, about 7 miles south of Palo Alto 335 Comment
  UC729684  Ranunculus aquatilis var. capillaceus Carl B. Wolf 1929-4-29 3664 San Mateo small reservoir 1 mi s Portola Comment
  UC277216  Ranunculus californicus H. M. Hall 1923-2-20 11844 b San Mateo Pigeon Point; 3.4 mi s of L.H., near sea Comment
  UC511338  Ranunculus californicus Lyman Benson 1931-3-15 2641 San Mateo Redwood City Santa Cruz Mt. Range, Emerald Lake 152 Comment
  SEINET5569721  Ranunculus californicus H. S. Gentry 1931-1 22 San Mateo Collected on slope W of Pacific Bone Coal Fertilizer Co. in South San Francisco. Comment
  JEPS127782  Ranunculus californicus var. californicus Adam C. Schneider with C. Matt Guilliams 2013-3-9 48 San Mateo Comment
  POM150461  Ranunculus californicus var. cuneatus C. F. Baker 1902-4-12 504 San Mateo San Gregorio. Comment
  JROH3492  Ranunculus hebecarpus John Hunter Thomas 1988-4-7 24382 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH3494  Ranunculus hebecarpus John Rawlings 2013-4-9 1158 San Mateo Jasper Ridge Biological Preserve, Stanford University; verge of Trail 11 through chaparral 144 Comment
  CAS-BOT-BC83425  Ranunculus lobbii George Oberlander 1950-3-18 518 San Mateo San Francisco Watershed Reserve. About Upper Crystal Spring Lake. Comment
  JROH3500  Ranunculus muricatus John Hunter Thomas 1987-5-7 24262 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA10410  Ranunculus muricatus Carl B. Wolf 1927-6-15 2164 San Mateo Along Skyline Drive, 8 mi. S of San Francisco. Comment
  CDA3486  Ranunculus trilobus P. Greer 2002-4-17 s.n. San Mateo Highway 101, in Half Moon Bay. 0 Comment
  UCD97311  Ranunculus trilobus Phil Greer 2002-4-17 s.n. San Mateo Hwy 101, in Half Moon Bay. Comment
  CAS-BOT-BC74340  Raphanus sativus Fred Hemphill 1973-3-9 642 San Mateo San Carlos. North of Malabar Road and Melendy Drive. 207 Comment
  RSA249486  Raphanus sativus John F. Emmel 1972-4-1 396 San Mateo Along Guadalupe Cyn Parkway near NE facing slope, 0.4 airmile SSW of Midway Village School, San Bruno Mtns. 91 Comment
  SJSU1605  Rhamnus alaternus C. D. Duncan 1955-2-17 San Mateo residence, Menlo Park Comment
  RSA152061  Rhamnus californica John H. Thomas 1961-5-7 9297 San Mateo San Bruno Mountain in northern part of county. 305 Comment
  RSA222805  Rhamnus californica S. S. Berry 1909-4-3 s.n. San Mateo Bear Creek Canyon Grade 259 Comment
  CAS-BOT-BC55890  Rhamnus crocea H. A. Dutton 1900-2-1 s.n. San Mateo unspecified 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
  CAS-BOT-BC389740  Rhododendron occidentale J. Lovelle 1973-7-29 33 San Mateo Pescadero Creek Comment
  CAS-BOT-BC437978  Ribes Eric Walther 1920-5-30 s.n. San Mateo Woodside Comment
  CAS-BOT-BC92493  Ribes aureum var. gracillimum Adoph Holme 1929-4-1 s.n. San Mateo Berenda Farm near Redwood City. Comment
  SEINET12215220  Ribes aureum var. gracillimum Cummings, McCallum, G. A. 1933-1 s.n. San Mateo Stevens Creek Comment
  POM222802  Ribes californicum S. S. Berry 1909-2-27 s.n. San Mateo Roadside near Adalanta Villa. 46 Comment
  CAS-BOT-BC93002  Ribes californicum var. californicum A. D. E. Elmer 1903-3-1 4683 San Mateo Portola. Comment
  JROH2639  Ribes californicum var. californicum John H. Thomas 1964-4-7 10302 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near edge of Searsville Lake. Comment
  JROH2640  Ribes californicum var. californicum John H. Thomas 1967-3-26 12418 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2643  Ribes californicum var. californicum D. E. Breedlove 1971-5-31 19359 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  CAS-BOT-BC6176  Ribes deductum Charles Fuller Baker 1902-4-4 441 San Mateo Crystal Springs Lake Comment
  JROH2653  Ribes divaricatum var. pubiflorum John Hunter Thomas 1983-4-21 21644 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along causeway. Comment
  JROH2656  Ribes divaricatum var. pubiflorum John Hunter Thomas 1988-4-28 24415 San Mateo Jasper Ridge Biological Preserve, Stanford University. Causeway. Comment
  CAS-BOT-BC173470  Ribes malvaceum James B. Roof; Walter Knight; Irja Knight 1965-6-20 1127 San Mateo Crystal Cave Canyon Comment
  RSA0021677  Ribes malvaceum G. Oberlander 1949-2-2 5 San Mateo Crest of Sweeney Ridge, San Francisco Watershed Reserve. Comment
  CAS-BOT-BC212808  Ribes menziesii James McMurphy 1906-5-22 s.n. San Mateo Creek above Judge Allen's, Santa Cruz Mts. Comment
  CAS-BOT-BC212826  Ribes menziesii Josephine M. Johnson 1918-8-1 s.n. San Mateo Unspecified Comment
  CAS-BOT-BC212813  Ribes menziesii W. R. Dudley 1898-4-15 s.n. San Mateo Unspecified Comment
  SEINET13942794 Image available Ribes sanguineum Lewis S. Rose 1947-1 47027 San Mateo Kings Mountain, alt ca 2000 ft 610 Comment
  CAS-BOT-BC144610  Ribes sanguineum var. glutinosum W. R. Dudley 1904-4-7 s.n. San Mateo 1/4 mile above Judge Allen's near Portola Comment
  CAS-BOT-BC144638  Ribes sanguineum var. glutinosum D. E. Breedlove 1974-5-13 36216 San Mateo San Pedro Valley Park, Pacifica 152 Comment
  CAS-BOT-BC144650  Ribes sanguineum var. glutinosum Ray H. Yanis 1951-4-21 53 San Mateo Searsville Lake edge 15 Comment
  JEPS23909  Ribes sanguineum var. glutinosum Le Roy Abrams 1902-4-13 2333 San Mateo Crystal Springs Comment
  CAS-BOT-BC144611  Ribes sanguineum var. glutinosum W. R. Dudley 1894-7-29 s.n. San Mateo Hill just beyond La Honda Comment
  RSA0019110  Ribes sanguineum var. glutinosum Lyman Benson 1929-3-5 976 San Mateo King s Mountain. Comment
  UC676728  Ribes sanguineum var. glutinosum Reed C. Rollins 1941-3-16 2945 San Mateo about 35 mi s San Francisco (w slope of mountains); Santa Cruz Mts. Comment
  CAS-BOT-BC363084  Rigiopappus leptocladus C. F. Baker 1902-5-4 754 San Mateo Woodside Comment
  CAS-BOT-BC363087  Rigiopappus leptocladus John H. Thomas 1971-5-2 15840 San Mateo Near intersection of Canada Road and Edgewater Road, about three miles westward from Redwood City 152 Comment
  JROH2208  Robinia pseudoacacia Ann Lambrecht 2007-9-5 32 San Mateo Jasper Ridge Biological Preserve, Stanford University; W bank of San Francisquito Creek, just downstream from confluence with Bear Creek Comment
  CAS-BOT-BC341023  Robinia pseudoacacia L. R. Abrams 1922-5-3 s.n. San Mateo Sutliff Garden, Stanford University Comment
  POM65802  Romanzoffia californica L. R. Abrams 1915-3-23 5568 San Mateo Crystal Springs - San Mateo Road on rocky bluff. Comment
Read comments
Dec 31 2014
  CHSC59705  Rorippa nasturtium-aquaticum Jan M. Karaz 1979-5-28 82 San Mateo 2.5 mi west of Hwy 280 toward San Francisco Bay on Farm Hill Blvd, along Stulsaft Creek in Stulsaft Park. 3 Comment
  JROH3768  Rosa John Hunter Thomas 1979-6-12 19595 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near stream below dam Comment
  CAS-BOT-BC147626  Rosa californica George Oberlander 1949-8-20 370 San Mateo Pilarcitos Canyon Comment
  CAS-BOT-BC146690  Rosa gymnocarpa Walter Knight; Irja Knight 1964-5-4 s.n. San Mateo Bitter-cherry Ridge Comment
  CAS-BOT-BC146691  Rosa gymnocarpa Walter Knight; Irja Knight 1964-5-30 601 San Mateo Colma Canyon Comment
  CAS-BOT-BC146695  Rosa gymnocarpa Delzie Demaree 1933-6-23 10386 San Mateo White House Canyon Comment
  RSA195394  Rosa gymnocarpa W. R. Dudley 1906-5-8 65 San Mateo Near Crystal Springs Lake. Santa Cruz Mtns. Santa Cruz peninsula. 91 Comment
  CAS-BOT-BC146704  Rosa gymnocarpa Elizabeth McClintock 1965-3-28 s.n. San Mateo Romanzoffia Ravine Comment
  POM275418  Rosa gymnocarpa Lyman D. Benson 1931-5-10 2796 San Mateo Woodside. Santa Cruz Mtn Range. 427 Comment
  JROH3757  Rosa gymnocarpa var. gymnocarpa W. R. Dudley 1893-4-1 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC5991  Rosa piscatoria Adolph Daniel Edward Elmer 1903-5-1 4923 San Mateo On the Pescadero Creek, Iverson's Place Comment
  CAS-BOT-BC148213  Rosa spithamea V. F. Hesse 1953-8-22 1189 San Mateo Near China Grade 762 Comment
  JROH2869  Rosmarinus officinalis Diane Renshaw, Ann Lambrecht 2011-6-21 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; N of Westridge fence near Escobar Rd. turnaround 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-BC152870  Rubus parviflorus Walter Knight; Irja Knight 1963-6-24 s.n. San Mateo Quarry 4 - San Bruno Mountain Comment
  CAS-BOT-BC152871  Rubus parviflorus Walter Knight; Irja Knight 1963-7-14 s.n. San Mateo Above the quarry - San Bruno Mountain Comment
  CAS-BOT-BC152875  Rubus parviflorus R. Hoffough 1929-5-11 s.n. San Mateo La Honda Road Comment
  JROH3775  Rubus parviflorus John Hunter Thomas 1982-7-8 21079 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near low-flow crossing Comment
  SJSU10411  Rubus spectabilis R. B. Blake 1966-4-10 San Mateo Gazos Cr, Big Basin State Park Comment
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Dec 7 2010
  CAS-BOT-BC157070  Rubus ursinus Alice Eastwood; John Thomas Howell 1938-6-26 6055 San Mateo Near Pescadero Comment
  CAS-BOT-BC157094  Rubus ursinus W. R. Dudley 1895-9-15 s.n. San Mateo [El Corte de Madera] Corte Madera Creek, Lumber Camp Comment
  CAS-BOT-BC157097  Rubus ursinus John Thomas Howell 1938-6-4 13888 San Mateo Burlingame Comment
  RSA101000  Rubus ursinus G. Oberlander 1949-4-9 25 San Mateo Pilarcitos Canyon. San Francisco Watershed Reserve. Comment
  CAS-BOT-BC422076  Rumex acetosella Javier Penalosa 1963-3-30 2704 San Mateo San Bruno Mountain. North of Randolph Ave. at Hillside Blvd. in SSF. 91 Comment
  CAS-BOT-BC422083  Rumex acetosella John H. Thomas 1963-5-20 10144 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz. Comment
  CAS-BOT-BC422092  Rumex acetosella J. H. Thomas 1949-4-6 s.n. San Mateo About 4 miles south of Daly City. Comment
  CAS-BOT-BC421573  Rumex crassus Alice Eastwood 1937-7-25 18887 San Mateo Pebble Beach, Pescadero Comment
  CAS-BOT-BC433358  Rumex crispus Ned Cahill 1974-6-21 349 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City. Comment
  CAS-BOT-BC433359  Rumex crispus Ned Cahill 1974-5-3 275 San Mateo Near the intersection of Canada and Edgewood roads, about 3 mi westward from Redwood City. Comment
  JROH3307  Rumex pulcher John Hunter Thomas 1981-5-19 20607 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC175931  Rumex salicifolius var. crassus W. A. Setchell 1913-10-19 San Mateo Farallone City Comment
  UC1191283  Rumex salicifolius var. transitorius Malcolm A. Nobs and S. Galen Smith 1949-8-26 1582 San Mateo about 1 mi s Half Moon Bay Comment
  SD27758  Rupertia physodes Carl B. Wolf 1927-5-31 414 San Mateo North end of Searsville Lake. Comment
  UC279599  Ruppia maritima W. A. Setchell 1925-8-29 San Mateo Laguna de Salada Comment
  CAS-BOT-BC454179  Ruppia maritima W. R. Dudley 1908-9-1 s.n. San Mateo Laguna Salada Comment
  SEINET3837363  Ruppia maritima Unknown 1946-4-30 s.n. San Mateo .5 mile north of Redwood City Comment
  UCD163902  Ruta Peter Rubtzoff 1988-4-12 9901 San Mateo San Bruno Mountain, on east side of Summit Road (former Radio Road), ca. 1 mile from San Bruno Mtn. Park entrance. Comment
  SD146161  Ruta chalepensis G. K. Helmkamp, E. A. Helmkamp 1999-6-28 5003 San Mateo Pescadero Crk Watershed: Bean Hollow Rd 0.3 mi S of Pescadero Rd (SW of Pescadero). Slopes above Butano Crk. 60 Comment
  JEPS128162  Rytidosperma penicillatum Eric Wrubel 2012-7-1 NPS 42 San Mateo Golden Gate National Recreation Area. Rancho Corral de Tierra, Spine Trail. Comment
  JROH5558  Sagina apetala John Rawlings 2013-4-19 1155 San Mateo Jasper Ridge Biological Preserve, Stanford University; verge south side of Trail 11 in a level section in chaparral 144 Comment
  CAS-BOT-BC103342  Salix bonplandiana W. R. Dudley 1894-4-21 s.n. San Mateo By bridge above San Mateo Comment
  JROH3858  Salix laevigata Toni Corelli 2002-11-18 250 San Mateo Jasper Ridge Biological Preserve, Stanford University; Trail 21, West side of Searsville Lake on lake trail that is east of the Field Station 106 Comment
  CAS-BOT-BC125380  Salix lasiandra var. lasiandra J. Ed. McClellan; Bonnie McClellan 1976-4-1 s.n. San Mateo Princeton Comment
  CAS-BOT-BC107139  Salix lasiolepis W. R. Dudley 1904-3-7 68 San Mateo Bear Gulch, Santa Cruz Mt. - Santa Cruz Peninsula 152 Comment
  CDA34016  Salix lasiolepis D. G. Kelch 2011-3-13 11 .056 San Mateo Near Half Moon Bay along Capistrano Creek. Comment
  JROH3867  Salix lasiolepis Toni Corelli 2003-2-6 255 San Mateo Jasper Ridge Biological Preserve, Stanford University; west side of lake below Searsville Lab 106 Comment
  RSA176658  Salix lasiolepis Peter H. Raven 1964-2-16 18742 San Mateo Just south of Lake San Andreas. Comment
  RSA249478  Salix lasiolepis John F. Emmel 1972-6-4 404 San Mateo Large canyon bottom 1.1 air miles NW of 1314' summit. Along Guadalupe Canyon Parkway. San Bruno Mtns. 107 Comment
  UC1618082  Salix lasiolepis Donald G. Nelson 1939-6-14 621 San Mateo 3 mi. s of San Francisco Co, line (Skyline Blvd. due e. of Mussel Rock on coast, large permanent Sag Pond) Comment
  CAS-BOT-BC107138  Salix lasiolepis W. R. Dudley 1903-3-16 s.n. San Mateo San Francisquito Creek near stock farm - Santa Cruz Peninsula Comment
  CAS-BOT-BC108258  Salix lasiolepis var. bigelovii John H. Thomas 1974-5-7 17316 San Mateo San Bruno Mountain - along Guadalupe Parkway opposite school. Western side of mountain. Comment
  CAS-BOT-BC108259  Salix lasiolepis var. bigelovii Walter Knight; Irja Knight 1964-3-16 s.n. San Mateo San Bruno Point - San Bruno Mountain Comment
  RSA184900  Salix lucida subsp. lasiandra L. S. Rose 1965-3-16 65007 San Mateo Searsville Lake. 122 Comment
  UCR142837  Salix scouleriana L. S. Rose 1934-2-10 34025 San Mateo Coast Range, Skyline Blvd. 4 miles south of Kings Mountain 701 Comment
  CAS-BOT-BC126480  Salix sitchensis Josephine D. Randall 1908-3-28 s.n. San Mateo [King's] Kings Mt. Road Comment
  CAS-BOT-BC126481  Salix sitchensis H. A. Dutton 1899-10-15 s.n. San Mateo Above Byrne's store, along road from Crystal Springs to Half Moon Bay Comment
  CAS-BOT-BC126507  Salix sitchensis James McMurphy 1907-4-27 s.n. San Mateo Kings Mt. Comment
  CAS-BOT-BC126521  Salix sitchensis W. R. Dudley 1897-4-19 s.n. San Mateo Bank of Pescadero Creek below Peters Creek Comment
  POM87714  Salix sitchensis L. R. Abrams 1902-1 2272 San Mateo Kings Mtn. Comment
  CAS-BOT-BC176847  Salsola australis Elizabeth McClintock; Paul Reeberg 1988-4-26 s.n. San Mateo Guadalupe Canyon Parkway Comment
  CAS-BOT-BC180792  Salsola soda William Anderson 1968-8-16 s.n. San Mateo Edge of salt marsh just above high tide line, west end of Dumbarton Bridge Comment
  RSA262204  Salsola soda John H. Thomas 1974-10-6 17615 San Mateo San Mateo County. Palo Alto Yacht Harbor near airport. 0 Comment
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Apr 3 2009
  POM46693  Sambucus callicarpa L. R. Abrams 1916-3-26 5589 San Mateo Road between San Mateo and Half-Moon Bay Comment
  POM46725  Sambucus microbotrys A. D. E. Elmer 1903-05 4663 San Mateo Butano Creek Comment
  CAS-BOT-BC246016  Sambucus nigra subsp. caerulea Paul Arnaud 1941-4-19 s.n. San Mateo Whipple Road, Redwood City Comment
  CAS-BOT-BC246023  Sambucus nigra subsp. caerulea George Oberlander 1950-4-2 586 San Mateo Sawyer Ridge, San Francisco Watershed Reserve Comment
  JEPS127879  Sambucus nigra subsp. caerulea Adam C. Schneider 2013-5-17 143 San Mateo Crystal Springs Reservoir Comment
  JROH1675  Sambucus nigra subsp. caerulea John Hunter Thomas 1985-5-22 23669 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC8645  Sambucus orbiculata var. glabra Adolph Daniel Edward Elmer 1903-7-1 4689 San Mateo Portola Comment
  CAS-BOT-BC236460  Sambucus racemosa subsp. racemosa A. D. E. Elmer 1903-6-1 5080 San Mateo Butano Creek Comment
  CAS-BOT-BC235073  Sambucus racemosa var. racemosa A. D. E. Elmer 1903-5-1 4663 San Mateo Butano Creek Comment
  UCSB11444  Sambucus racemosa var. racemosa Olson, Jim 1962-4-17 San Mateo 5 miles southeast of Halfmoon Bay on road to San Mateo 45 Comment
  SEINET13945102 Image available Sanicula arctopoides Lewis S. Rose 1965-1 65012 San Mateo San Bruno Mts, N end. Ca 400 ft 122 Comment
  CAS-BOT-BC223322  Sanicula bipinnatifida Margaret A. Barry 1938-3-6 230 San Mateo On Coal Mine Ridge Comment
  JROH326  Sanicula bipinnatifida John Hunter Thomas 1991-5-2 25018 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU1080  Sanicula bipinnatifida C. W. Sharsmith 1951-4-6 5820 San Mateo Woodside Hills c. 3 mi W of Woodside 182 Comment
  UCD127932  Sanicula bipinnatifida R. E. Dengler 1960-4-14 33 San Mateo Jasper Ridge, Stanford Biological Reserve. 121 Comment
  JROH339  Sanicula crassicaulis John H. Thomas 1975-4-30 17844 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  RSA185818  Sanicula crassicaulis John H. Thomas 1958-3-19 7066 San Mateo East facing slope of San Bruno Mountain, just north of South San Francisco 30 Comment
  UCR280165  Sanicula crassicaulis Peter Rubtzoff 1977-4-14 8938 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
  JEPS85232  Sanicula hoffmannii Roy E. Buck, James A. West, Roger Raiche 1984-7-29 510 San Mateo on nw-facing slope overlooking Cascade Ck. (e of ranch headquarters, ca 0.8 air km ne of CA Hwy 1, 3.3 air km ne of Point Ano Nuevo); Cascade Ranch 152 Comment
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Oct 12 2021
  UC1601281  Satureja douglasii Ira L. Wiggins 1929-7-4 3778 San Mateo 4 mi w La Honda (on hill road to Pescadero Beach) Comment
  RSA128598  Satureja douglasii Peter H. Raven 1950-4-30 1988 San Mateo Montara Mountains 122 Comment
  CAS-BOT-BC283132  Schedonorus arundinaceus J. H. Thomas 1963-8-4 10235 San Mateo About 2.5 miles inland from San Gregorio along the highway Comment
  UC1100791  Scirpus californicus Malcolm A. Nobs, S. Galen Smith 1949-8-25 1567 San Mateo s of Rockaway Beach Comment
  CAS-BOT-BC518999  Scoliopus bigelovii J. H. Thomas 1960-3-1 8539 San Mateo Along Kings Mt. road about 1/2 mile below Skyline Blvd. 609 Comment
  CAS-BOT-BC519001  Scoliopus bigelovii C. F. Leithold 1896-2-24 s. n. San Mateo Woodside Hills Comment
  CAS-BOT-BC519005  Scoliopus bigelovii W. R. Dudley 1893-4-1 s. n. San Mateo La Honda Creek Comment
  RSA299413  Scoliopus bigelovii Elsa Kraeger 1926-2-21 s.n. San Mateo N of La Honda. Comment
  JROH5459  Scribneria bolanderi John H. Thomas 1980-5-1 19912 San Mateo Jasper Ridge Biological Preserve, Stanford University; Road D Comment
  RSA131004  Scrophularia californica Deborah Hichborn 1920-4-20 s.n. San Mateo Near San Francisquito Creek. Santa Cruz Mountain Peninsula. Comment
  UC25840  Scutellaria tuberosa Maclean 1027 San Mateo near Pescadero Comment
  JROH5752  Scutellaria tuberosa L. Nordby 1982-5-14 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; Oak woodland just west of the serpentine grasslands on the top of Jasper Ridge Comment
  CAS-BOT-BC59052  Sedum spathulifolium Elizabeth McClintock; Carlyn Halde 1963-6-23 s.n. San Mateo San Bruno Mountain, below parking lot on the top of the mountain. Comment
  CAS-BOT-BC59061  Sedum spathulifolium G. B. Rossbach 1939-6-18 756 San Mateo Ledge near 755 on SE slope of North Peak, Montara Mts. 396 Comment
  RSA0074736  Sedum spathulifolium A. D. E. Elmer 1903-06 4550 San Mateo Toward San Mateo from Crystal Springs Lake. Comment
  CAS-BOT-BC363396  Senecio aronicoides Le Roy Abrams 1901-5-11 1612 San Mateo Colma Comment
  CDA7644  Senecio elegans G. D. Barbe 1977-11-17 2354 San Mateo Thornton Beach State Park, Daly City. 0 Comment
  RSA132965  Senecio mikanioides John H. Thomas 1958-12-18 7509 San Mateo Along Skyline Blvd. just west of San Bruno. Comment
  JROH686  Senecio minimus Toni Corelli 2006-9-20 329 a San Mateo Jasper Ridge Biological Preserve, Stanford University. Below Trail 12 along Corta Madera Creek 106 Comment
  JEPS27356  Senecio sylvaticus Rimo Bacigalupi with Jim Roof and L. R. Heckard 1961-4-24 7617 San Mateo shoulder of spur facing almost due e KQED radio tower and power station; Summit of San Bruno Mountain 350 Comment
  JROH1228  Senecio vulgaris John Hunter Thomas 1982-11-6 21197 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC85782  Sequoia sempervirens unspecified 1901-1-27 s.n. San Mateo Mountain side West of Preston Place Comment
  UCD92597  Setaria parviflora John Thomas Howell 1957-7-8 32805 San Mateo Holy Cross Cemetary. Comment
  CDA6645  Sherardia arvensis D. G. Kelch 2002-5-13 s.n. San Mateo Cahill Ridge. 0 Comment
  UC28466  Sherardia arvensis J. Burtt Davy Jun 21 1893-Jun 23 1893 1154 San Mateo Pilarcitos Lake and Pilarcitos Canyon Comment
  UCR119543  Sidalcea diploscypha L. S. Rose 1935-6-9 35211 San Mateo San Francisco Bay Region, Emerald Lake, west of Redwood City 84 Comment
  UCSB18185  Sidalcea malviflora Muirhead, M. 1964-4-17 San Mateo On Crocker Estate, Hillsborough 91 Comment
  JEPS48780  Sidalcea malviflora subsp. laciniata James G. Daly 1934-1 211 San Mateo branch of La Honda Canyon Santa Cruz Mts., , La Honda Canyon (San Gregorio Watershed) Comment
  SD67293  Sidalcea malviflora subsp. malviflora Darley F. Howe 1967-4-13 4343 San Mateo Pebble Beach Comment
  RSA15352  Sidalcea malviflora subsp. malviflora Carl B. Wolf 1927-1-29 167 San Mateo Pebble Beach, coast south of Pescadero. Comment
  CAS-BOT-BC386853  Silene gallica John H. Thomas 1961-5-7 9309 San Mateo San Bruno Mountain in northern part of county 396 Comment
  CAS-BOT-BC386849  Silene gallica Elizabeth McClintock; David Schooly; Kim Marcus 1975-4-13 s.n. San Mateo San Bruno Mountain, slope above Hillside Blvd., South San Francisco Comment
  JROH1737  Silene gallica John Hunter Thomas 1982-5-18 20930 San Mateo Jasper Ridge Biological Preserve, Stanford University; along road along SLAC fence near low-flow crossing Comment
  CAS-BOT-BC389196  Silene laciniata subsp. californica L. R. Abrams 1909-5-26 4237 San Mateo Santa Cruz Peninsula. Between Woodside and Crystal Springs Comment
  CAS-BOT-BC389901  Silene scouleri subsp. scouleri Walter Knight; Irja Knight 1963-7-14 s.n. San Mateo San Bruno Mountain. Above the quarry Comment
  CAS-BOT-BC389900  Silene verecunda Elizabeth McClintock; Walter Knight; Irja Knight; Baki Kasapligil 1967-7-18 s.n. San Mateo San Bruno Mountain. North side of ridge road adjacent to Buckeye Canyon Comment
  CAS-BOT-BC364856  Silybum marianum Robert Robertson 1954-4-14 76 San Mateo N.W. of Palo Alto Yacht Club 3 Comment
  CAS-BOT-BC75378  Sisymbrium orientale Walter Knight; Irja Knight 1965-4-11 s.n. San Mateo San Bruno Mountains. Guadalupe Road about 0.5 mile from Radio Road. Comment
  JEPS127795  Sisyrinchium bellum Adam C. Schneider with C. Matt Guilliams 2013-4-7 66 San Mateo Along dirt road running parallel to overhead power transmission lines. Comment
  RSA18455  Sisyrinchium bellum Carl B. Wolf 1927-6-29 552 San Mateo South of Pebble Beach near Pescadero Comment
  RSA366982  Sisyrinchium bellum Glenn A. Gorelick 1967-4-28 s.n. San Mateo San Mateo County: San Bruno Mts, overlooking Daly City ner San Francisco Comment
  UCR51646  Sisyrinchium bellum R. Ascanio 1989-4-17 s.n. San Mateo c. 2 mi north of Ano Nuevo State Reserve, E on Gazo Creek Road off Hwy 1. 85 Comment
  SEINET12045594  Sisyrinchium bellum Unknown 1932-1 8944 San Mateo Los Francos Woods Comment
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Oct 31 2021
  SEINET5571633  Sisyrinchium bellum H. S. Gentry 1931-1 6 San Mateo Collected 1.5 miles west of San Mateo, Half-moon Bay road. Comment
  SJSU15344  Sisyrinchium bellum J. A. Nikkel 1985-4-3 19 San Mateo east side of Highway 1, a 1/2 mile south of Pigeon Point; Comment
  UCD138851  Sisyrinchium bellum R. S. Woglum 1935-5-24 1154 San Mateo San Francisco area, Skyline Drive south to Big Basin. Comment
  UCD138874  Sisyrinchium bellum R. E. Dengler 1960-4-12 24 San Mateo on northeast side of ravine, Jasper Ridge, Stanford Biological Reserve. 129 Comment
  UC1577337  Smilacina racemosa Cynthia DiGiovanni 1971-4-4 19 San Mateo Alpine Road Menlo Park (foothills) Comment
  UCR129777  Smilacina stellata var. sessilifolia C. B. Wolf 1927-4-3 00250 San Mateo Santa Cruz Mtns., 1 mile above La Honda 183 Comment
  IRVC9074  Smilacina stellata var. sessilifolia P. W. Rundel 1962-4-12 1017 B San Mateo 1 mile East of Skyline Hwy on La Honda Rd. Comment
  RSA377731  Smilacina stellata var. sessilifolia Lewis S. Rose 1948-3-31 48035 San Mateo Skyline Blvd., west of Tanforan 91 Comment
  JROH4177  Solanum americanum John Hunter Thomas 1982-7-2 21052 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near low-flow crossing Comment
  RSA181219  Solanum americanum John H. Thomas 1965-11-26 11453 San Mateo At intersection of Tunitas Creek Road and Lobos Creek cutoff. 122 Comment
  JEPS12105  Solanum douglasii W. I. Follett 1934-2-18 10 San Mateo 2.6 mi n of Pigeon Point (beside the main highway) Comment
  UC1332467  Solanum douglasii G. L. Stebbins Jr. and E. F. Paddock 1939-8-17 63 San Mateo San Gregorio Comment
  SEINET5571744  Solanum douglasii H. S. Gentry 1931-1 88 San Mateo Collected about 1 mile SE of Holy Cross Cemetery. Comment
  UCD126847  Solanum furcatum John H. Thomas 1961-5-7 9302 San Mateo San Bruno Mountain in northern part of county. 304 Comment
  NY827232  Solanum furcatum P. H. Raven 1950-4-16 1773 San Mateo On the outskirts of Colma. 61 Comment
  SJSU15426  Solanum physalifolium var. nitidibaccatum Toni Corelli 2011-8-25 707 San Mateo Ano Nuevo State Park, along Hwy. 1 south of main entrance 30 Comment
  POM203826  Solanum umbelliferum L. S. Rose 1934-2-10 34024 San Mateo Woodside Canyons in hills. Comment
  SBBG26835  Solanum umbelliferum L. S. Rose -Feb-1934 San Mateo Woodside Comment
  CAS-BOT-BC156868  Solanum umbelliferum W. R. Dudley 1896-2-16 s.n. San Mateo Glen Gloaming near Peters Cr., Santa Cruz Mts. Comment
  NY820584  Solanum umbelliferum P. H. Raven 1950-4-16 1797 San Mateo San Bruno Mts. 244 Comment
  UCD136058  Solidago Collector Unknown 1925-6-15 1662 San Mateo Pescadero - Santa Cruz Road. Comment
  RSA473644  Solidago californica E. A. Purer 1933-8-25 5523 San Mateo Spring Valley. Comment
  JEPS32447  Solidago elongata W. L. Jepson 1910-8-18 4163 San Mateo Butano Cr Comment
  JEPS29413  Solidago spathulata L. R. Heckard 1961-7-16 1260 San Mateo near summit San Bruno Mt. (ne-facing slope to the ne of transmitting station KQED) 304 Comment
  SD38297  Solidago spathulata Edith A. Purer 1932-7-18 4024 San Mateo Comment
  SEINET9319779  Solidago spathulata Unknown 1948-8-22 121 San Mateo San Vicente Canyon Comment
  CAS-BOT-BC365186  Solidago velutina subsp. californica Peter Rubtzoff 1975-10-4 8415 San Mateo San Bruno Mountains. On ridge northwest of Fog Forest Comment
  HSC24021  Solidago velutina subsp. californica Mary Katherine Wicksten 1971-8-20 207 San Mateo Huddart Park; area by King's Mtn. Rd., above Miwok Area Comment
  JROH1237  Solidago velutina subsp. californica John Hunter Thomas 1990-7-28 24938 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1244  Soliva sessilis John Hunter Thomas 1978-5-12 19202 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC353415  Soliva sessilis Peter Rubtzoff 1977-4-14 8940 San Mateo Saddle area on north side of Guadalupe Canyon Parkway west of Radio Road Junction. East Fork Colma Creek canyon area, San Bruno Mountains. Comment
  CAS-BOT-BC365932  Soliva sessilis Walter Knight; Irja Knight 1964-4-13 635 San Mateo San Bruno Mountain. North Power Line Ridge road Comment
  JROH1242  Soliva sessilis John Hunter Thomas 1978-4-25 19147 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1254  Soliva sessilis John Hunter Thomas 1992-5-5 25212 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JEPS15054  Sonchus asper L. R. A. 1901-3-16 1144 San Mateo Menlo Park Comment
  POM292654  Sonchus oleraceus Lyman Benson 1928-12-15 837 San Mateo Lake Searsville, Stanford, Santa Cruz, San Francisco Bay 152 Comment
  RSA128377  Sonchus oleraceus P. H. Raven 1950-6-3 2209 San Mateo along Millbrae Ave., Millbrae. 61 Comment
  CAS-BOT-BC236582  Sorghum halepense J. H. Thomas 1965-9-8 11444 San Mateo Near intersection of Bayshore and University Avenue, east Palo Alto Comment
  RSA23203  Spartina foliosa I. L. Wiggins 1938-11-25 9213 San Mateo Along Dumbarton Bridge approach Comment
  CAS-BOT-BC236625  Spartina foliosa Helen L. Dale 1919-10-1 s.n. San Mateo Salt marshes below Palo Alto, Santa Cruz Mountain Peninsula Comment
  SEINET11681953  Spartina foliosa Unknown 1933-1 10528 San Mateo San Francisco Bay, Belmont Comment
  CAS-BOT-BC390006  Spergula arvensis Javier Penalosa 1963-3-30 2751 San Mateo San Bruno Mountain. Crest of ridge SW of Brisbane, 750ft. NW of power lines 304 Comment
  UCD99161  Spergula arvensis W. A. Harvey 1948-6-28 1694 San Mateo 1 mile south of town of Half Moon Bay. Comment
  SEINET7062814  Spergula arvensis subsp. arvensis A. G. Vestal 1937-6-15 s.n. San Mateo Pebble Beach west of Pescadero. UTM Zone 10, 551765mE, 4121313mN. (WGS84/NAD83). 0 Comment
  JROH1765  Spergularia John Hunter Thomas 1987-5-7 24263 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU2302  Spergularia macrotheca C. W. Sharsmith 1950-4-16 6631 San Mateo near Pescadero Point near Pescadero Comment
  RSA23193  Spergularia macrotheca I. L. Wiggins 1938-7-9 8932 San Mateo Pigeon Point light house. Comment
  CAS-BOT-BC390456  Spergularia macrotheca var. macrotheca John H. Thomas 1963-5-20 10103 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz Comment
  CAS-BOT-BC390919  Spergularia marina John Thomas Howell 1924-9-28 662 San Mateo At the Leslie Salt Refinery Comment
  CDA24145  Spergularia marina Buchanan 1960-4-28 San Mateo Harbor Blvd. & Freeway, Redwood City. 0 Comment
  CAS-BOT-BC390703  Spergularia rubra Philip C. Wheeler 1965-5-17 s.n. San Mateo San Bruno Mountain. In Crocker Hills near the Cow Palace Comment
  RSA0004233  Sphaeralcea fasciculata var. elmeri A. D. E. Elmer 1903-05 4395 San Mateo Crystal Springs Lake. Comment
  RSA785891  Stachys ajugoides Peter Rubtzoff 1977-6-21 9067 San Mateo Saddle area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  JEPS34472  Stachys ajugoides var. rigida L. R. Heckard, and R. Bacigalupi 1963-7-2 1361 San Mateo trail to Montara Peak (nw slope) (above old county road); Montara Peak 304 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
  JROH2898  Stachys bullata John H. Thomas 1971-5-30 15977 San Mateo Jasper Ridge Biological Preserve, Stanford University; below dam Comment
  RSA116741  Stachys bullata Josephine Randall 1907-6-8 187 San Mateo Portola Valley. Santa Cruz Peninsula. Comment
  POM283278  Stachys bullata Lyman Benson 1930-6-14 2160 San Mateo La Honda. 305 Comment
  POM63312  Stachys bullata A. D. E. Elmer 1903-06 4417 San Mateo San Mateo Comment
  SJSU15310  Stachys bullata Vince Ortisi 1975-9-27 3 San Mateo Saunders Shingle Mill (historical marker) off Tunitus Creek road. 457 Comment
  UC2055637  Stachys pycnantha Carl B. Wolf 1927-6-1 535 San Mateo Above Emerald Lake, W of Redwood City . Comment
  NY415795  Stachys quercetorum A. A. Heller 1907-5-28 8577 San Mateo Above Crystal Springs on the Half Moon Bay road Comment
  CDA41578  Stachys rigida A. Gilbert 1997-6-8 s.n. San Mateo San Francisco Bay Area; La Honda. 0 Comment
  SEINET13948132 Image available Stachys rigida Lewis S. Rose 1950-1 50139 San Mateo Emerald Lake region, alt ca 800 ft. hills W of Redwood City 244 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
  RSA218025  Stachys rigida subsp. quercetorum Elizabeth McClintock, Carlyn Halde 1963-6-23 s.n. San Mateo East-facing slope below parking lot, San Bruno Mountain Comment
  RSA63022  Stachys rigida subsp. quercetorum L. S. Rose 1950-5-20 50139 San Mateo Emerald Lake region, hills w. of Redwood City. 244 Comment
  HSC31059  Stebbinsoseris heterocarpa Kenton Chambers 1952-5-24 418 San Mateo 1.2 mi. towards Woodside from Skyline junction of Woodside-La Honda Rd. Comment
  JROH1778  Stellaria media John H. Thomas 1967-3-13 12411 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1781  Stellaria media John H. Thomas 1975-4-19 17795 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC394056  Stellaria media John H. Thomas 1963-5-20 10125 San Mateo Ano Nuevo Island, about one half mile off shore and about 20 miles NW of Santa Cruz. Comment
  JROH1790  Stellaria nitens John H. Thomas 1968-3-17 14196 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1536756  Stephanomeria elata G. H. True Jr. 1937-7-31 830 San Mateo near Skyline Blvd. (Alpine Road) 182 Comment
  JROH5388  Stipa miliacea var. miliacea John Hunter Thomas 1989-5-30 24757 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH5329  Stipa pulchra John H. Thomas 1955-5-6 4995 San Mateo Jasper Ridge Biological Preserve, Stanford University. Small draw on south side of ridge. Comment
  POM313014  Stuckenia pectinata Malcolm A. Nobs, S. Galen Smith 1949-8-25 1552 San Mateo Marshes at Sharp Park. Comment
  SD38068  Stylomecon heterophylla Marie Cummings 1933-5-8 80 San Mateo Steven's Creek. Comment
  CAS-BOT-BC271602  Symphoricarpos albus var. laevigatus Elizabeth McClintock; Philip Wheeler 1967-6-11 s.n. San Mateo Radio Road, San Bruno Mountain Comment
  CAS-BOT-BC271648  Symphoricarpos albus var. laevigatus John H. Thomas 1961-5-7 9267 San Mateo San Bruno Mountain in northern part of county 396 Comment
  JROH1683  Symphoricarpos albus var. laevigatus John Hunter Thomas 1980-5-1 19908 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC271649  Symphoricarpos albus var. laevigatus Elizabeth McClintock 1965-3-28 s.n. San Mateo San Bruno Mountain Comment
  UC1119619  Symphyotrichum chilense T. Tyrrell 1928-9-11 5 San Mateo 2 mi s San Gregorio; Santa Cruz Quadrangle 91 Comment
  UC892754  Symphyotrichum chilense Lewis S. Rose 1933-10-14 33381 San Mateo Visitacion Valley, (dry hills) Vistacion Valley Comment
  CAS-BOT-BC99054  Symphyotrichum chilense Alice Eastwood; John Thomas Howell Apr. 24, 1938. 5253 San Mateo Tunitas Comment
  CAS-BOT-BC99093  Symphyotrichum chilense W. R. Dudley 1909-10-4 s.n. San Mateo Hill above Mussel Rock - Santa Cruz Peninsula 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
  JROH1278  Tanacetum parthenium John Hunter Thomas 1983-6-29 22697 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH1281  Tanacetum parthenium John Hunter Thomas 1991-11-21 25107 San Mateo Jasper Ridge Biological Preserve, Stanford University; near low-flow crossing of San Francisquito Creek Comment
  SEINET7076118  Tellima grandiflora A. G. Vestal 1955-5-31 s.n. San Mateo La Honda Road (Route 86) at Redwood Terrace. (NAD 27; 37.3184? deg. North Latitude, 122.2959? deg. West Longitude, UTM Zone 10, 562392mE, 4130218mN). [GPS Coordinate: WGS84/NAD83]. Comment
  CAS-BOT-BC447476  Tellima grandiflora Philip C. Wheeler; Elizabeth McClintock 1967-6-11 s.n. San Mateo North facing brushy slope to south of new Guadalupe Parkway just before it meets Radio Road Comment
  CAS-BOT-BC447483  Tellima grandiflora Le Roy Abrams 1901-5-1 1558 San Mateo Searsville-Bear Gultch Comment
  JROH3910  Tellima grandiflora H. J. Dengler 1961-5-8 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University. Shaded creek bank N.E. of Searsville Rocks, across creek from violet site. Comment
  CAS-BOT-BC438264  Tetragonia tetragonoides Ira L. Wiggins 1935-8-24 8161 San Mateo At Moss Beach Comment
  CAS-BOT-BC438267  Tetragonia tetragonoides Walter Knight; Irja Knight 1965-4-24 1081 San Mateo San Bruno Mountain. Near dumps at west end of mt. Comment
  JROH3503  Thalictrum fendleri var. polycarpum L. R. Abrams 1901-3-1 1171 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC399852  Thalictrum polycarpum Alice Eastwood 1922-5-30 11330 San Mateo Crystal Springs Lake Comment
  CAS-BOT-BC399843  Thalictrum polycarpum W. R. Dudley 1906-5-19 s.n. San Mateo Santa Cruz Mountain Peninsula. Whipple Road - West of Redwood City Comment
  UCD93350  Thinopyrum ponticum John C. Throckmorton 1976-6-29 s.n. San Mateo La Honda, Star Route 1. Comment
  CAS-BOT-BC66665  Thysanocarpus curvipes John H. Thomas 1971-4-24 15775 San Mateo Jasper Ridge Biological Experimental Area, about 5 miles southwest of Palo Alto. Comment
  CAS-BOT-BC66680  Thysanocarpus curvipes Dr. A. Kellogg; W. G. W. Harford 1868-1-1 49 San Mateo Unspecified. Comment
  UCR121588  Torilis arvensis George K. Helmkamp, E. A. Helmkamp 1999-6-28 4967 San Mateo Coast Range; Santa Cruz Mtns, Sky Londa; junction of Calif. Hwy 84 and Calif. Hwy 35, 5 mi south of central Redwood City 457 Comment
  RSA15279  Torreya californica C. B. Wolf 1927-4-3 245 San Mateo 1 mile above La Honda. Santa Cruz Mountains Comment
  RSA45321  Torreya californica I. L. Wiggins 1945-5-5 11161 San Mateo Along La Honda Creek about 1 mile above La Honda 152 Comment
  JROH4296  Tribulus terrestris Toni Corelli 2005-9-14 305 a San Mateo Jasper Ridge Biological Preserve, Stanford University; along road B just west of entrance to Dennis Martin marker site 168 Comment
  RSA681673  Trichostema lanatum Deb Annuschka 1990-11-16 388 San Mateo Yerba Buena Herbarium. Comment
  RSA460866  Trientalis latifolia E. S. Spalding 1924-6-28 s.n. San Mateo San Mateo, La Honda Comment
  UC33530  Trifolium albopurpureum var. albopurpureum E. R. Drew April 1888 San Mateo San Pedro Ranch Comment
  JROH2236  Trifolium barbigerum K. Hoffaugh 1929-4-27 651 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2241  Trifolium barbigerum John H. Thomas 1974-4-25 17202 San Mateo Jasper Ridge Biological Preserve, Stanford University; on top of ridge Comment
  UCSC005926  Trifolium buckwestiorum Randall Morgan 1996-5-18 2955 San Mateo Seed from Coal Mine Ridge Comment
  JROH2259  Trifolium depauperatum var. amplectens John H. Thomas 1974-4-19 17160 San Mateo Jasper Ridge Biological Preserve, Stanford University; near area H Comment
  JROH2230  Trifolium dichotomum John H. Thomas 1964-4-19 10319 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2282  Trifolium fucatum Robert Robertson 1954-4-23 100 San Mateo Jasper Ridge Biological Preserve, Stanford University 170 Comment
  JROH2284  Trifolium fucatum John H. Thomas 1955-5-6 4987 San Mateo Jasper Ridge Biological Preserve, Stanford University; on top of ridge and adjacent grassy slopes Comment
  JROH2297  Trifolium fucatum John Hunter Thomas 1981-4-29 20511 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2314  Trifolium glomeratum Toni Corelli 2012-5-15 374 San Mateo Jasper Ridge Biological Preserve, Stanford University; Road J 115 Comment
  JROH5960  Trifolium glomeratum John Rawlings 2017-5-30 2086 San Mateo Jasper Ridge Biological Preserve, Stanford University; Road B at edge of oak scrub, 81 Comment
  JROH2322  Trifolium hirtum John Hunter Thomas 1984-4-24 23300 San Mateo Jasper Ridge Biological Preserve, Stanford University; Sand Hill Road fence Comment
  UCSC005962  Trifolium macraei Randall Morgan 1995-6-6 2726 San Mateo Occasional at Bean Hollow State Beach Comment
  JROH2372  Trifolium variegatum John H. Thomas 1955-5-6 4989 San Mateo Jasper Ridge Biological Preserve, Stanford University; on top of ridge and adjacent grassy slopes Comment
  JROH2374  Trifolium variegatum John H. Thomas 1956-4-7 5605 San Mateo Jasper Ridge Biological Preserve, Stanford University; on top of ridge and adjacent slopes Comment
  UC729682  Trifolium variegatum Carl B. Wolf 1929-4-24 3657 San Mateo sw end Jasser Ridge; back of Stanford University 152 Comment
  UC867032  Trifolium variegatum T. R. Abrams 1915-6-14 5564 San Mateo Kings Mtn Rd Comment
  UCSC006388  Trifolium variegatum Randall Morgan 1995-6-22 2796 San Mateo On flat top ridge W of Waterman Creek, Redtree Properties Comment
  RSA0084064  Trifolium variegatum var. melananthum Lyman D. Benson 1930-5-1 2062 San Mateo Stanford University. 107 Comment
  CDA28299  Trifolium willdenovii T. C. Fuller 1967-6-13 15942 San Mateo Half Moon Bay Harbor, north edge of the town of Half Moon Bay. 0 Comment
  UCSC005901  Trifolium willdenovii Randall Morgan 1996-5-24 2971 San Mateo Pescadero Creek Comment
  CHSC39828  Trifolium wormskioldii Maibelle Williams 1929-5-10 San Mateo Moss Beach. Comment
  POM126713  Trifolium wormskioldii R. L. Pendleton 1907-4-20 592 San Mateo Lake Merced. 30 Comment
  CAS-BOT-BC451908  Triglochin maritima Le Roy Abrams 1901-3-16 1145 San Mateo Cooley's Landing Comment
  UCD165019  Triglochin scilloides Peter Rubtzoff 1975-5-21 7960 San Mateo San Bruno Mountains. 'Saddle' area on north side of Guadalupe Canyon Parkway, west of Radio Road junction. Comment
  JROH4728  Trillium chloropetalum John H. Thomas 1976-4-2 18075 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  UC1134685  Trillium chloropetalum H. S. Yates 1935-2-3 5001 San Mateo 2 mi. s. San Gregorio; Santa Cruz Quad. Comment
  POM169971  Trillium chloropetalum var. chloropetalum C. F. Baker 1902-3-30 431 San Mateo Crystal Springs Lake. Comment
  POM170078  Trillium chloropetalum var. chloropetalum C. F. Baker 1902-3-30 431 San Mateo Crystal Springs Lake. Comment
  CAS-BOT-BC521008  Trillium chloropetalum var. chloropetalum James McMurphy 1902-3-22 s. n. San Mateo Near Portola Comment
  RSA15271  Trillium chloropetalum var. chloropetalum Carl B. Wolf 1927-3-6 236 San Mateo Los Trancos Creek, 2 miles back of Stanford University. Comment
  CAS-BOT-BC521064  Trillium chloropetalum var. giganteum Alice Eastwood 1916-3-1 s.n. San Mateo San Mateo Comment
  CAS-BOT-BC521067  Trillium chloropetalum var. giganteum Phillip C. Wheeler 1965-6-20 s.n. San Mateo San Bruno Mountain: Trillium Gulch near Knife Rock Comment
  CAS-BOT-BC521074  Trillium chloropetalum var. giganteum W. R. Dudley 1894-3-24 s.n. San Mateo Santa Cruz Peninsula: Bank of Pescadero Creek Comment
  CAS-BOT-BC133432  Trillium ovatum W. R. Dudley 1893-4-1 s.n. San Mateo Bear Gulch [Canon] Canyon, near Woodside Comment
  UC1537446  Triphysaria eriantha subsp. eriantha Gordon H. True Jr. 1936-6-7 487 San Mateo slong coast highway 2 mi s Pescadero 15 Comment
  HSC20846  Triphysaria eriantha subsp. rosea L. S. Rose 1965-3-25 65010 San Mateo San Bruno Mtns., N end 122 Comment
  JEPS40977  Triphysaria eriantha subsp. rosea Lewis S. Rose 1965-3-25 65010 San Mateo n end San Bruno Mts.; n end San Bruno Mts. 121 Comment
  UCD123413  Triphysaria eriantha subsp. rosea Lewis S. Rose 1965-3-25 65010 San Mateo San Bruno Mountains, north end. 121 Comment
  UC1303092  Triphysaria floribunda Roxana S. Ferris and I. L. Wiggins 1932-4-7 8038 A San Mateo hills above Colma Comment
  UCR139346  Triphysaria floribunda David D. Keck 1932-5-6 1471 San Mateo San Francisco Bay Region, 1 mi south of San Mateo on Highway US 101 61 Comment
  JROH4138  Triphysaria pusilla John H. Thomas 1971-4-10 15753 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  SJSU16036  Triphysaria versicolor subsp. versicolor Toni Corelli, John Rawlings 2016-4-29 1767 San Mateo Along Atkinson Bluff Trail and throughout Cascade Field, north of Cascade Cr. Trail, in Ano Nuevo State Park 11 Comment
  CAS-BOT-BC200078  Trisetum canescens L. R. Abrams 1915-6-14 5559 San Mateo Kings Mountain Road near first bridge 152 Comment
  UCD93599  Trisetum canescens P. B. Kennedy 1916-4-1 s.n. San Mateo Daly City, Colma Canyon, S San Francisco. Comment
  JROH4737  Triteleia hyacinthina John H. Thomas 1967-6-1 12961 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4742  Triteleia ixioides subsp. ixioides John Rawlings 2011-6-22 1070 San Mateo Jasper Ridge Biological Preserve, Stanford University. North side of ridge down slope from Escobar Gate. 130 Comment
  CAS-BOT-BC523095  Triteleia ixioides subsp. ixioides W. R. Dudley 1894-5-1 s.n. San Mateo Santa Cruz Peninsula, from Woodside to Crystal Springs Lake Comment
  IRVC9072  Triteleia ixioides subsp. ixioides P. W. Rundel 1963-7-7 1136 San Mateo San Francisco Bay drainage area; Summer Spring Road; woodside. Santa Cruz Mountains 152 Comment
  JROH4744  Triteleia laxa John H. Thomas 1963-5-12 10080 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM276973  Triteleia laxa Lyman Benson 1930-4-17 2070 San Mateo Stanford University 91 Comment
  CAS-BOT-BC200486  Triticum aestivum Walter Knight; Irja Knight 1965-4-24 1037 San Mateo Point San Bruno Comment
  JEPS54258  Tropidocarpum gracile R. J. S. 1908-3-25 San Mateo Los Buellas hills Mt. Hamilton Range Comment
  JROH1625  Tropidocarpum gracile H. J. Dengler 1972-4-23 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; north bend of San Francisquito Creek Comment
  CAS-BOT-BC74061  Turritis glabra W. R. Dudley 1900-3-17 s.n. San Mateo Santa Cruz Peninsula. Top of Montara Mountains. Comment
  JROH5535  Typha angustifolia John H. Thomas 1973-6-15 16852 San Mateo Jasper Ridge Biological Preserve, Stanford University. By dam in Searsville Lake Comment
  UC1241808  Typha angustifolia Malcolm A. Nobs and S. Galen Smith 1949-8-25 1556 San Mateo marshes at Sharp Park; marshes at Sharp Park Comment
  UCR101543  Ulex europaeus Don Pendleton 1993-11-20 s.n. San Mateo San Francisco Bay Area, South San Francisco, south side of Hickey Blvd. between Junipero Serra Blvd. and the 280 Fwy, east of Mandarin Dr. and west of Longford Dr., at edge of Daly City, SW of Cypress Lawn Cemetery Comment
  CAS-BOT-BC73689  Ulmus parvifolia John Thomas Howell 1966-7-24 41997 San Mateo Burlingame - in flower beds near planed trees, Trousdale Ave. just west of El Camino Real. Comment
  CAS-BOT-BC91229  Umbellularia californica George Oberlander 1949-4-9 38 San Mateo San Francisco Watershed Reserve. East side draw of Sawyer Ridge. Comment
  JROH140  Umbellularia californica John Hunter Thomas 1981-2-14 20216 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  POM272291  Umbellularia californica Lyman Benson 1929-3-4 984 San Mateo Hill east of Lake Searsville. Comment
  SEINET3559461 Image available Umbellularia californica Lewis S. Rose 1934-2-12 34028 San Mateo Burlingame. Comment
  JROH1296  Uropappus lindleyi John Hunter Thomas 1989-5-9 24714 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  CAS-BOT-BC403968  Urtica dioica subsp. gracilis L. R. Abrams 1909-8-1 4246 San Mateo Santa Cruz Peninsula. Between La Honda and Pescadero Comment
  CAS-BOT-BC403969  Urtica dioica subsp. gracilis L. R. Abrams 1927-6-13 s.n. San Mateo La Honda Comment
  CAS-BOT-BC403972  Urtica dioica subsp. gracilis John H. Thomas 1966-9-13 12393 San Mateo Montara Comment
  JROH4237  Urtica dioica subsp. holosericea D. E. Breedlove 1971-5-31 19379 San Mateo Jasper Ridge Biological Preserve, Stanford University; short ridge east of stream leading into Searsville Lake Comment
  CAS-BOT-BC412533  Urtica urens J. H. Thomas 1961-5-6 9225 San Mateo About 1/4 mile west of center of Pescadero 15 Comment
  JEPS43426  Urtica urens W. L. Jepson 1921-4-3 9105 San Mateo Colma, Colma Canyon Colma Canyon; Colma, Colma Canyon Comment
  JEPS27348  Vaccinium cespitosum Rimo Bacigalupi with L. R. Heckard and Jim Roof 1961-4-24 7609 San Mateo due n true summit of San Bruno Mt. (directly below and ne of KQED radio power station) 342 Comment
  CAS-BOT-BC199357  Vaccinium ovatum Reed C. Rollins 1942-4-30 3003 San Mateo S.E. slope of San Bruno Hills, about 1 mile west of Brisbane Comment
  CAS-BOT-BC199363  Vaccinium ovatum W. R. Dudley 1898-3-5 s.n. San Mateo Kings Mountain Comment
  CAS-BOT-BC199373  Vaccinium ovatum Javier Penalosa 1963-3-9 2693 San Mateo Ravine 1/2 mi. east of 1314ft. summit 304 Comment
  OBI14436  Vaccinium ovatum Lewis S. Rose 1964-3-14 64005 San Mateo Kings Mountain 610 Comment
  RSA152267  Vaccinium ovatum John H. Thomas 1961-5-7 9298 San Mateo San Bruno Mountain in northern part of county. 305 Comment
  RSA471163  Vaccinium ovatum L. S. Rose 1938-2-23 38084 San Mateo Kings Mountain. 640 Comment
  SJSU11091  Vaccinium ovatum S. H. Casey 1969-5-18 260 San Mateo near summit San Bruno Mt Comment
  CAS-BOT-BC199354  Vaccinium ovatum R. Stinchfield 1913-11-1 176 San Mateo King's Mt. Trail Comment
  JEPS90930  Vaccinium ovatum var. ovatum Dean W. Taylor 1988-4-29 9587 San Mateo n slope of San Bruno Mountain 0.3 mi n(22d)w of summit, summit of small hill (local botaniceal placename of Kamchatka Point), Santa Cruz Mountains San Bruno Mountain; Santa Cruz Mountains, San Bruno Mountain 371 Comment
  UC22218  Vaccinium parvifolium W. J. V. Osterhout Jul 1899 San Mateo Near Pescadero Comment
  CAS-BOT-BC76139  Vancouveria planipetala Eric Walther 1919-6-9 s.n. San Mateo Woodside. Comment
  CAS-BOT-BC76144  Vancouveria planipetala A. D. E. Elmer 1903-5-1 4922 San Mateo Iverson's Place. Pescadero Creek. Comment
  POM272218  Vancouveria planipetala Lyman Benson 1931-5-10 2795 San Mateo Woodside, Santa Cruz Mountains. 244 Comment
  JROH4265  Verbena lasiostachys var. lasiostachys John H. Thomas 1978-5-23 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4278  Verbena lasiostachys var. scabrida John Hunter Thomas 1981-9-24 20742 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH4281  Verbena lasiostachys var. scabrida John Hunter Thomas 1983-6-2 22325 San Mateo Jasper Ridge Biological Preserve, Stanford University. Near the low-flow crossing Comment
  JROH4155  Veronica persica Carol Zabel 2007-4-30 67 San Mateo Jasper Ridge Biological Preserve, Stanford University; caretaker's garden area and other areas around the caretaker's residence Comment
  RSA195662  Vicia angustifolia John H. Thomas 1967-5-2 12739 San Mateo Colma. Near intersection of El Camino Real and F Street. Comment
  UCR130219  Vicia gigantea George K. Helmkamp, E. A. Helmkamp 1999-6-28 4999 San Mateo Pescadero Creek Watershed, Bean Hollow Road 0.3 mi south of Pescadero Road (SW of Pescadero). Slopes above Butano Creek 61 Comment
  UC1176928  Vicia sativa Peter H. Raven 1950-6-3 2215 San Mateo Millbrae; along Millbrae Ave 60 Comment
  JROH2437  Vicia sativa subsp. nigra John Hunter Thomas 1981-4-30 20515 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2442  Vicia sativa subsp. sativa John H. Thomas 1973-6-10 16825 San Mateo Jasper Ridge Biological Preserve, Stanford University Comment
  JROH2452  Vicia sativa subsp. sativa John Hunter Thomas 1988-4-21 24403 San Mateo Jasper Ridge Biological Preserve, Stanford University; near bridge over San Francisquito Creek Comment
  JROH5827  Vicia tetrasperma Ann Lambrecht 2012-6-2 s.n. San Mateo Jasper Ridge Biological Preserve, Stanford University; ~ 50 meters north of Preserve main gate between roads H and C (Sector 29 E1 or E2) 118 Comment
  JROH2454  Vicia villosa subsp. varia John Rawlings 2012-5-15 1114 San Mateo Jasper Ridge Biological Preserve, Stanford University. Along road B vicinity of Dennis Martin Marker. 79 Comment
  JEPS50209  Viola adunca W. I. Follett 1934-2-18 2 San Mateo 9/10 mi s of Pigeon Point (along Said Highway) Comment
  RSA130698  Viola adunca Roxana S. Ferris 1920-3-8 1767 San Mateo Montara Mtns vicinity of South Peak. 503 Comment
  UC19259  Viola adunca Ivar Tidestrom 1894-3-24 San Mateo Comment
  SJSU2304  Viola adunca subsp. adunca C. W. Sharsmith 1950-4-16 6633 San Mateo near Pescadero Point near Pescadero Comment
  CAS-BOT-BC536571  Viola glabella John Hunter Thomas 1954-4-3 3814 San Mateo La Honda Creek, about 1 mi N of La Honda 152 Comment
  CAS-BOT-BC536575  Viola glabella George Oberlander 1949-6-25 200 San Mateo San Francisco Watershed Reserve: southern boundary Comment
  CAS-BOT-BC536826  Viola glabella Josephine D. Randall 1908-3-28 s.n. San Mateo Santa Cruz Peninsula: Kings Mt. Comment
  RSA130981  Viola ocellata H. L. Mason 1917-3-8 66 San Mateo Kings Mtn. Comment
  RSA77751  Viola ocellata D. D. Keck 1932-6-1 1495 San Mateo Above Woodside on La Honda road, east slope of Santa Cruz Mtns. Comment
  UC1073374  Viola pedunculata George B. Rossbach 1955-3-26 354 San Mateo next ridge n of San Bruno Mountain (north San Mateo County) 243 Comment
  UC1085311  Viola pedunculata F. A. Pitelka April 1946 San Mateo lower end of San Andreas Lake Comment
  OBI78517  Viola pedunculata Lewis S. Rose 1965-3-25 65009 San Mateo San Bruno Mts N end 122 Comment
  RSA0056266  Viola sarmentosa W. M. Arbaugh 1968-4-10 225 San Mateo Butano State Park. Comment
  CAS-BOT-BC199820  Vulpia John H. Thomas 10616 San Mateo San Bruno