Search Results — 2000 specimen records retrieved (1375 records with coordinates)
(That's the default maximum. Contact Jason Alexander for larger data requests.)

Results for search: County=CONTRA COSTA; Source=All;   

Mapping Options:

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

Download Options:
Select all records · Select records with coordinates

Include annotations and voucher information

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

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

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

Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page.
Turn on yellow flags to show possible range discrepancies. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA0029772  Acacia cyclops Barbara J. Ertter 1990-10-14 9660 Contra Costa Point Isabel Regional Shoreline on San Francisco Bay in SW El Cerrito, on abandoned railroad track at end of Rydin Road. Comment
  UC1607582  Acacia melanoxylon Barbara Ertter 1991-5-12 9815 Contra Costa in sw corner of El Cerrito (Point Isabel Regional Shoreline, along old railroad right-of-way between bay and salicornia marsh, on San Francisco Bay); San Francisco Bay, Point Isabel Regional Shoreline Comment
  CAS-BOT-BC436989  Acaena pinnatifida var. californica John Thomas Howell 1933-5-14 11285 Contra Costa Hills east of St. Mary's College Comment
  SEINET4172014 Image available Acer macrophyllum Robert A. Norris, John L. Inase 1981-1 4146 Contra Costa Abrigo Valley Trail, NW part of Briones Regional Park (ca. 3 mi. NNW Lafayette) 274 Comment
  UC762183  Acer macrophyllum R. F. Hoover 1938-5-4 3345 Contra Costa peak e Tassajero Creek (canyon slope); Peak e of Tassajero Creek (canyon slope) Comment
  JEPS42725  Acer negundo var. californicum W. L. Jepson 1908-8-16 3084 Contra Costa Walnut Creek 22 Comment
  SEINET3195242 Image available Acer negundo var. californicum Annetta Carter 1937-4-4 1229 Contra Costa Creek bank, Moraga Valley, 2.5 miles north of Moraga 180 Comment
  UC1050367  Acer palmatum N. Floy Bracelin 1942-7-4 2183 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC2032824  Achillea millefolium Doran, Andrew Scott 2012-3-20 694 Contra Costa North end of Brooks Island along ridge overlooking artificial spit, southwest of caretakers residence. Comment
  JEPS100120  Achyrachaena mollis G. Smick 2003-4-10 GAS 138 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC88435  Achyrachaena mollis T. S. Brandegee 1892-5-1 Contra Costa Antioch Comment
  UCD164888  Achyrachaena mollis Henry House 1995-4-30 1995- 7 Contra Costa About 1 km west of Walnut Blvd., ca. 0.5 km south of Marsh Creek Rd. 60 Comment
  UC29290  Achyrachaena mollis J. Burtt Davy May 13 1893-Jan 1 1900 766 Contra Costa Comment
  UC1127726  Adenostoma fasciculatum R. W. Lundh 1933-2-1 199 Contra Costa Las Trampas Ridge Concord Quad., Las Trampas Ridge Comment
  UC1127729  Adenostoma fasciculatum R. W. Lundh 1932-9-9 163 Contra Costa 1/2 mi. s.e. Nortonville; Mt. Diablo Quad. 381 Comment
  UC691158  Adenostoma fasciculatum Mary L. Bowerman 1933-2-4 1689 Contra Costa flats e. of Meridian-North Peak divide Mt. Diablo 822 Comment
  UCD112582  Adenostoma fasciculatum Beecher Crampton 1949-7-15 481 Contra Costa Site of old coal mining town of Judsonville. Comment
  CDA42502  Adiantum jordanii D. G. Kelch 2005-1-21 5 .006 Contra Costa Carquinez Strait; Crockett. Along railroad tracks in West Valona across from decommissioned sewage treatment plant. Comment
  JEPS100160  Adiantum jordanii A. Langston 2003-6-19 AL 52 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CDA19069  Aegilops triuncialis D. Petersen 2001-6-2 s.n. Contra Costa San Francisco Bay Area; NW corner of Camp Parks Military Reservation E of Dublin, ~ 2000 ft E of Dougherty Rd. 198 Comment
  CDA19920  Aegilops triuncialis Slate 2002-6-2 PDR P 099580 Contra Costa Northern California; Mt Diablo State Park. 0 Comment
  CAS-BOT-BC206881  Aesculus californica Barrett Anderson 1987-4-30 3494 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD. 125 Comment
  UC692716  Aesculus californica Mary L. Bowerman 1930-6-3 226 Contra Costa 1.9 mi from Mount Diablo North Road entrance; Mount Diablo Comment
  CAS-BOT-BC202596  Aesculus californica Volney Rattan 1887-5-27 s.n. Contra Costa Alhambra Val. Comment
  JEPS100119  Agoseris grandiflora G. Smick 2003-4-29 GAS 151 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS36285  Agoseris grandiflora W. L. Jepson 1919-6-8 8329 Contra Costa Mt. Diablo Comment
  UC691457  Agoseris grandiflora var. grandiflora Mary L. Bowerman 1933-5-17 2107 Contra Costa branch of Curry due s Olafson's barn; Curry River 289 Comment
  CAS-BOT-BC22970  Agoseris heterophylla John Thomas Howell 1933-5-14 11260 Contra Costa Hills east of St. Mary's College Comment
  POM203659  Agoseris heterophylla John T. Howell 1933-5-14 11260 Contra Costa Hills east of St. Mary's college Comment
  POM301002  Agoseris heterophylla Mary L. Bowerman 1933-5-8 2013 Contra Costa Fossil Ridge near crest, north side by side road. Comment
  UC29357  Agoseris heterophylla var. heterophylla H. M. Hall 1901-4-5 1726 Contra Costa Mt. Diablo; San Francisco Bay region Comment
  UC691795  Agoseris heterophylla var. heterophylla Mary L. Bowerman 1934-3-18 2482 Contra Costa west of, (in small open flat on the edge of Donner Canyon) Russelman Park; Donner Canyon 365 Comment
  UC1618364  Agrostis avenacea Barbara Ertter, Brad Olson 1991-9-28 10831 Contra Costa San Pablo Reservoir between Orinda and El Sobrante (at s. end of reservoir); San Pablo Reservoir 91 Comment
  SEINET10590760  Agrostis avenacea Barbara J. Ertter, B. Olson 1994-5-7 Ertter 12748 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Local in puddle on graded flat. Comment
  UC2028508  Agrostis avenacea Barbara Ertter with Tony Morosco 1998-9-18 16425 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, north quarry area [subsequently developed] Comment
  CAS-BOT-BC127340  Agrostis exarata R. Bacigalupi 1922-9-24 s.n. Contra Costa Mitchell Canyon, north base of Mount Diablo. 213 Comment
  UC2028498  Agrostis exarata Barbara Ertter 1999-6-12 16711 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, road crossing at confluence of NE and E forks of Sycamore Creek Comment
  CDA42431  Agrostis hallii D. G. Kelch 2012-6-9 12 .092 Contra Costa Carquinez Strait Region; East of Crockett; Bull Valley Trail. Comment
  JEPS107127  Agrostis hallii Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14221 Contra Costa Mt. Diablo southeast of Walnut Creek, north of Curry Point. 518 Comment
  CDA39045  Agrostis pallens D. G. Kelch 2011-6-5 11 .574 Contra Costa Carquinez Strait; South of Crockett, south of Cummings Skyway. Comment
  UCD149001  Agrostis pallens D. Kelch; Suzanne Latham, Matt Beyers 2009-6-3 09. 335 Contra Costa El Sobrante Ridge at end of Silver Belt Dr. 198 Comment
  UC692383  Agrostis viridis Mary L. Bowerman 1936-8-17 3527 Contra Costa Sulphur Spring Mount Diablo, Pine Canyon 137 Comment
  JEPS111085  Aira caryophyllea Lee Echols 2003-7-7 s.n. Contra Costa N of Lark Drive in central portion of grassland within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond. 15 Comment
  JEPS97561  Aira caryophyllea R. D. Stone 1980-7-13 282 Contra Costa Huckleberry Trail Oakland Hills, near Alameda-Contra Costa county line (NE of intersection of Skyline Blvd. and Snake Road) Comment
  UCD55783  Aira caryophyllea Beecher Crampton 1956-5-14 3391 Contra Costa 7 miles southwest of Antioch, just east of old Nortonville. Comment
  RSA760665  Aira caryophyllea var. capillaris William J. Ferlatte, L. Maynard Moe 1970-4-27 1231 Contra Costa San Francisco Bay, Red Rock Island. Comment
  UC692095  Alisma plantago-aquatica Mary L. Bowerman 1933-9-9 2429 Contra Costa Frog Pond Mount Diablo Comment
  CAS-BOT-BC445378  Alisma plantago-aquatica Volney Rattan 1886-6-16 s.n. Contra Costa Walnut Creek Comment
  POM300645  Alisma triviale Mary L. Bowerman 1933-9-9 2429 Contra Costa Frog Pond. Mt Diablo. Comment
  CAS-BOT-BC175360  Allenrolfea occidentalis J. Burtt Davy 1898-5-1 s.n. Contra Costa Byron Springs, Mt. Diablo region Comment
  NY216671  Allenrolfea occidentalis R. F. Hoover 1937-8-31 2707 Contra Costa Byron Hot Springs. Comment
  RSA107394  Allenrolfea occidentalis L. S. Rose 1955-9-12 55173 Contra Costa 2 miles E of Byron. 15 Comment
  RSA411794  Allenrolfea occidentalis E. E. Stanford 1930-08 1871 Contra Costa Near Old River; near sloughs. Comment
  UC3090  Allium acuminatum Edw. L. Greene 1892-1 Contra Costa Mt. Diablo Comment
  RSA367058  Allium amplectens Mark Morris 1929-03 14928 Contra Costa Mt. Diablo. Comment
  UC1481556  Allium amplectens Neil Havlik 1980-5-18 921 Contra Costa along fire road on e side, Morgan Territory Regional Preserve Morgan Territory Regional Preserve Comment
  CAS-BOT-BC469110  Allium falcifolium Paul F. Covel 1936-5-17 126 Contra Costa Summit Mt. Diablo Comment
  RSA26408  Allium falcifolium J. T. Howell 1941-4-6 16179 Contra Costa Ridge east of Deer Park, Mt. Diablo Comment
  RSA59638  Allium falcifolium Verne Grant, Alva Grant 1950-5-13 8898 Contra Costa North slope of Meridian Peak. Comment
  JEPS56390  Allium serra W. L. Jepson 1918-6-3 7581 Contra Costa Donner Canyon Mt. Diablo, Donner Canyon 609 Comment
  UC142793  Allium serra Alice Eastwood 1895-4-8 Contra Costa Antioch Comment
  UC635249  Allium serra H. L. Mason 1929-3-29 5135 Contra Costa Marsh Creek Road 2 mi e Claton; Marsh Creek Road Comment
  CAS-BOT-BC475532  Allium serra John Thomas Howell 1933-5-14 11284 Contra Costa Hills east of St. Mary's College Comment
  UC2013015  Allium serra Barbara Ertter 1991-5-5 9782 Contra Costa Black Diamond Mines Regional Preserves S of Pittsburg, N-facing slope below Black Diamond Trail in SW corner of park. Comment
  UC2062653  Allium serra Barbara Ertter with Dan Norris 2001-4-8 17589 Contra Costa Lime Ridge Open Space east of Walnut Creek, path northwest of summit installation. Comment
  UCD138632  Allium serra Laurence S. Jones 1934-4-8 s.n. Contra Costa Mount Diablo. 609 Comment
  UCD138633  Allium serra E. W. Jones 1934-4-8 59 Contra Costa Mt. Diablo. Comment
  UCD138636  Allium serra Cliff Low 1978-5-19 20 Contra Costa Back Canyon Creek, east of Eagle Peak on Mount Diablo. 304 Comment
  UC692025  Allium unifolium Mary L. Bowerman 1932-5-6 1426 Contra Costa near road, Mitchell Canyon Mt. Diablo, Mitchell Canyon 243 Comment
  CAS-BOT-BC476605  Allium unifolium Alice Eastwood 1916-5-30 4454 Contra Costa Mt. Diablo near base Comment
  CAS-BOT-BC476607  Allium unifolium John Thomas Howell 1931-5-12 6469 Contra Costa Oakland Hills Comment
  POM300633  Allium unifolium Mary L. Bowerman 1931-4-19 750 Contra Costa Mitchell Canyon, Mt. Diablo. Comment
  UC691644  Allophyllum divaricatum Mary L. Bowerman 1933-4-26 1907 Contra Costa North Peak ridge e.-s.e of peak Mt. Diablo 609 Comment
  UC691610  Allophyllum divaricatum Mary L. Bowerman 1932-4-16 1340 Contra Costa little s. of 1682 Eagle Point ridge; Mt. Diablo Comment
  JEPS108359  Allophyllum gilioides David Gowen 2005-4-11 229 Contra Costa Mt. Diablo State Park. Below Devils Elbow in the upper part of Rhine Canyon drainage. Comment
  CAS-BOT-BC170931  Alnus rhombifolia Walter Knight 1965-3-1 910 Contra Costa Antioch Dunes, along water's edge - Carquinez Straights Comment
  CAS-BOT-BC170932  Alnus rhombifolia Alice Eastwood 1914-2-24 3732 Contra Costa Antioch Comment
  UC2031467  Alnus rhombifolia Barbara Ertter with Brad Olson, Dianne Lake, Lynne Hosley and A. Youngson 1991-10-20 10861 Contra Costa Dow Wetlands Preserve, just W of Antioch marina Comment
  SEINET12027584  Alnus rhombifolia L. S. Rose 1938-1 38307 Contra Costa Marsh Creek, 6 mi E of Clayton 152 Comment
  CDA3269  Amaranthus albus A. G. Murdock, D. G. Kelch 2004-5-28 303 Contra Costa Carquinez Strait; Luzon. Comment
  CDA15289  Amaranthus albus G. F. Hrusa, D. Crowe, R. York 1998-7-17 14729 Contra Costa Sacramento Delta; Along top of levee separating Dow Ecological Reserve and San Joaquin R. Comment
  UC2028195  Amaranthus albus Barbara Ertter 1997-8-18 15768 Contra Costa Disturbed area adjacent to Antioch Dunes NWR east of Antioch. Comment
  CDA9491  Amaranthus blitoides D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .215 Contra Costa Byron Airport. Comment
  UC1789207  Amaryllis belladonna Barbara Ertter 2002-8-24 18029 Contra Costa NE corner of Mount Diablo State park, along upper bridle path S of Mount Diablo Mine property, apparent site of old homestead (only rocked terraces left) 274 Comment
  UC1948953  Ambrosia chamissonis William J. Ferlatte, L. Maynard Moe 1970-4-27 1219 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC1051334  Amphilophium buccinatorium N. Floy Bracelin 1941-6-15 1394 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CAS-BOT-BC222228  Amsinckia Alice Eastwood; John Thomas Howell 1936-4-19 2141 Contra Costa Somersville Comment
  CAS-BOT-BC222234  Amsinckia John Thomas Howell 1933-3-29 10913 Contra Costa Nortonville hills Comment
  UCD32491  Amsinckia Beecher Crampton 1950-4-22 522 Contra Costa Contra Costa County, above site of Judsonville, west of old Empire mine. 152 Comment
  UC78264  Amsinckia grandiflora T. S. Brandegee May 1887 Contra Costa Judsonville Comment
  CDA9449  Amsinckia intermedia D. G. Kelch 1992-3-21 1821 -A Contra Costa 2.5 mi. SE of Byron; along RR tracks, N of junction of Holey Rd. and Byron Hwy. 0 Comment
  CHSC23358  Amsinckia intermedia Willis Ball 1975-3-2 475 Contra Costa Contra Loma Regional Park. In area #5. On w side of largest hill ca. 100 yds ne of main boat ramp at the s end of the reservoir. 45 Comment
  JEPS73693  Amsinckia intermedia L. R. Heckard with Wm. Hirano and Ted Niehaus 1968-3-5 1762 Contra Costa 3 mi se Byron (at junction of Holey Road, along Byron-Bethany Road) 7 Comment
  RSA0068499  Amsinckia intermedia Katie Gallagher, Nick Jensen 2014-4-26 175 Contra Costa Las Trampas Regional Wilderness. 365 Comment
  RSA32944  Amsinckia intermedia A. A. Heller 1938-4-9 15016 Contra Costa 3 miles southwest of Antioch Comment
  SEINET12519155  Amsinckia intermedia Richard R. Halse 1988-1 3541 Contra Costa Along State Hwy. 4 near its junction with Balfour Road on the south edge of Brentwood 5 Comment
  CAS-BOT-BC222458  Amsinckia lunaris R. F. Hoover 1939-4-24 4058 Contra Costa Lower end of San Pablo Reservoir Comment
  CAS-BOT-BC222464  Amsinckia lunaris Joseph P. Tracy 1934-4-30 13196 Contra Costa Near Lafayette 152 Comment
  UCD119713  Amsinckia lunaris Francia Chisaki; Peter Kamb 1952-5-4 2275 Contra Costa Bear Creek Road, 1.5 miles east of Orinda-Richmond road (leaving this road ca. 1 mile north of Orinda). Comment
  RSA0029365  Amsinckia lunaris Barbara Ertter, Chris Thayer 1993-5-7 11707 Contra Costa Ca 0.5 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. 457 Comment
  UCD119728  Amsinckia lycopsoides Morris Halperin 1929-4-21 s.n. Contra Costa St. Mary's College Campus. Comment
  UCR47852  Amsinckia lycopsoides Alfred Sattler 1972-4-2 16 Contra Costa Mt. Diablo Creek Drainage Area, Concord; SE corner of Wilson Lane and West St. 51 Comment
  UC726539  Amsinckia menziesii var. menziesii A. A. Heller 1942-4-20 16427 Contra Costa just e of the Boat School, of the Antioch High School, not far from San Joaquin River Comment
  CDA29026  Anagallis arvensis D. G. Kelch 2006-5-7 6 .156 Contra Costa Carquinez Strait.; Crockett. Upper Edward s Canyon. Comment
  CHSC116622  Anagallis arvensis Lowell Ahart; Josephine Guardino 2016-4-19 20784 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along the sides of the dirt roads, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  RSA756970  Anagallis arvensis Barbara J. Ertter 1993-5-7 11717 Contra Costa Berkeley-Oakland Hills, horse trail southeast of Vollmer Peak east of Tilden Park steam trains 518 Comment
  CAS-BOT-BC45254  Ancistrocarphus filagineus Brandegee s.n. Contra Costa Antioch Comment
  UC196982  Ancistrocarphus filagineus Chesnut and Drew 1889-4-18 Contra Costa sand hills Antioch Comment
  CAS-BOT-BC400260  Anemopsis californica W. W. Carruth 1903-5-11 s.n. Contra Costa Nr. Walnut Creek Comment
  UC2029069  Anemopsis californica Barbara Ertter 2000-7-16 17416 Contra Costa Borges Creek on east side Borges Ranch Road on NW base of Mount Diablo, downstream from fire road junction. Comment
  UC697132  Anthemis cotula Mary L. Bowerman 1930-6-3 228 Contra Costa North Road (1.9 mi from entrance) Mount Diablo 167 Comment
  CAS-BOT-BC84715  Anthemis cotula E. M. Zeile 1921-8-6 1136 Contra Costa Shepherd Canon Comment
  JEPS99534  Anthriscus caucalis Mary L. Bowerman 1994-4-17 Contra Costa Mount Diablo, (probably bottom of Donner Canyon fire road). Comment
  JEPS99545  Anthriscus caucalis Mary Bowerman 1995-7-2 Contra Costa Mount Diablo, probably Back Canyon or foot trail to Donner Canyon. Comment
  UC1050713  Antirrhinum majus subsp. tortuosum N. Floy Bracelin 1941-4-13 1137 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS83303  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum David M. Thompson 1984-8-12 405 Contra Costa 0.25 mi n water of Briones Reservoir (at the end of Hampton Road); Briones Valley Quad. 198 Comment
  UC691600  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum Mary L. Bowerman 1932-9-3 1535 Contra Costa Muir Area; Mount Diablo Comment
  UC2029063  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum Barbara Ertter 2000-7-29 17447 Contra Costa Donner Basin on north side of Mount Diablo, Cardinet Oaks Road at junction with Falls Trail. Comment
  UC2029066  Antirrhinum vexillocalyculatum subsp. vexillocalyculatum Barbara Ertter 2000-7-29 17438 Contra Costa Donner Basin on north side of Mount Diablo, opening on lower end of Middle Trail between Meridian Ridge Road and first stream crossing Comment
  UC2032826  Aphanes arvensis Doran, Andrew Scott 2012-3-20 696 Contra Costa Second highest point on Brooks Island below rocky outcrop Comment
  JEPS112078  Aphanes occidentalis D. G. Kelch 2003-4-3 03 .347 Contra Costa Cummings Skyway South of Cummings Skyway and Crockett Blvd 134 Comment
  RSA135450  Apiastrum angustifolium Volney Rattan 1886-6-14 s.n. Contra Costa West slope of Mt. Diablo Comment
  UC692207  Aquilegia eximia Mary L. Bowerman 1933-6-2 2331 Contra Costa Donner Canyon Mount Diablo Comment
  CAS-BOT-BC392088  Aquilegia formosa John Thomas Howell 1933-5-14 11253 Contra Costa Hills east of St. Mary's College Comment
  RSA482739  Arabis breweri Mark Morris 1929-03 14914 Contra Costa Mt. Diablo. Comment
  CAS-BOT-BC128690  Arbutus menziesii H. E. McMinn 1925-1-1 s.n. Contra Costa Head of San Leandro Creek Comment
  UC692482  Arbutus menziesii Mary L. Bowerman 1932-9-5 1548 Contra Costa Mount Diablo, Inner Black Hills, e of the meridian Inner Black Hills; Mount Diablo, Inner Black Hills Comment
  UCD117499  Arbutus menziesii Morris Halperin 1929-4-21 s.n. Contra Costa St. Mary's College Campus. Comment
  UC692041  Arceuthobium campylopodum Mary L. Bowerman 1930-6-22 374 Contra Costa above main canyon (Mitchell Canyon Trail); Mount Diablo Comment
  CAS-BOT-BC410130  Arceuthobium occidentale J Kuijt 1958-1-22 s.n. Contra Costa Mt. Diablo Comment
  UCSC006431  Arctostaphylos Randall Morgan 1991-4-28 s.n. Contra Costa Alamo, S-Gate Rd, 1/4 mi beyond Curry Pt, Mt. Diablo Comment
  CAS-BOT-BC24106  Arctostaphylos auriculata Alice Eastwood 1903-2-22 3161 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC24108  Arctostaphylos auriculata Alice Eastwood; John Thomas Howell 1936-4-19 2130 Contra Costa Nortonville Comment
  CAS-BOT-BC24116  Arctostaphylos auriculata Mary L. Bowerman 1935-3-24 2750 Contra Costa Lime Ridge, west face, between two major cuts of the Cowell Cement Company. Comment
  CAS-BOT-BC24118  Arctostaphylos auriculata Alice Eastwood 1922-5-14 11311 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC24120  Arctostaphylos auriculata Alice Eastwood 1922-3-17 11083 Contra Costa Mt. Diablo Comment
  JEPS38915  Arctostaphylos auriculata Mary L. Bowerman 1932-2-13 1086 Contra Costa on ridge between main forks of canyon Mount Diablo; , Alamo Canyon Comment
  POM316531  Arctostaphylos auriculata Mary L. Bowerman 1932-1-23 1075 (Duplicate) Contra Costa Sycamore Canyon, east fork: East edge of chaparral near canyon bottom. Comment
  RSA164647  Arctostaphylos auriculata Percy C. Everett 1963-11-19 24549 Contra Costa Mt Diablo. 457 Comment
  RSA622485  Arctostaphylos auriculata Jon E. Keeley 1996-6-24 27602 Contra Costa Above Rock City, Mt. Diablo. 540 Comment
Read comments
Jan 30 2013
  UC692230  Arctostaphylos auriculata Mary L. Bowerman 1934-3-24 2751 Contra Costa between two major cuts of Cowell Cement Company (w face of ridge); Mount Diablo, Lime Ridge Comment
  UC692484  Arctostaphylos auriculata Mary L. Bowerman 1932-2-13 1086 Contra Costa on ridge between main forks of canyon Mount Diablo; , Alamo Canyon Comment
  UC697792  Arctostaphylos auriculata Mary L. Bowerman 1932-9-5 1546 Contra Costa near fire trail which runs s from large spur (on meridian) heading into Sycamore Canyon; Mount Diablo, Inner Black Hills Comment
  UCD162927  Arctostaphylos auriculata D. O. Burge; K. Zhukovsky 2015-6-6 1747 Contra Costa Mount Diablo. 515 Comment
  CAS-BOT-BC27181  Arctostaphylos bowermaniae James B. Roof 1977-11-18 1009 Contra Costa Along Black Diamond Trail of the Black Diamond Regional Preserve 243 Comment
  SEINET11998374  Arctostaphylos canescens subsp. malloryi W. Knight, Knight, I. 1988-1 6478 Contra Costa Tilden Regional Park, Regional Parks Botanic Garden, originally from Iron Mt. in Shasta Co 914 Comment
  CAS-BOT-BC23551  Arctostaphylos crustacea Walter Knight; Irja Knight 1980-3-16 3715 Contra Costa Sobrante Ridge between Heavenly Ridge Land and Castro Ranch Road. Comment
  CAS-BOT-BC23593  Arctostaphylos crustacea Walter Knight 1980-3-6 3719 Contra Costa Redwood Regional Park, East Ridge Trail Comment
  CAS-BOT-BC23553  Arctostaphylos crustacea Neil Havlik; Walter Knight 1982-11-12 4549 Contra Costa Briones Regional Park adjacent to russell Tree Farm. 327 Comment
  CAS-BOT-BC23591  Arctostaphylos crustacea Walter Knight; Irja Knight 1980-3-16 3715 Contra Costa Sobrante Ridge between Heavenly Ridge Lane and Castro Ranch road. Comment
  CAS-BOT-BC23599  Arctostaphylos crustacea Stephen W. Edwards 1981-1-5 1001 Contra Costa Browne's Regional Park, on ridge facing Russell Tree Farm. Comment
  SEINET11989683  Arctostaphylos crustacea Unknown 1982-1 20829 Contra Costa on Rocky Ridge, about half way down from summit ridge (on 2nd-middle-shelf on ridges), Las Trampas 183 Comment
  OBI14749  Arctostaphylos densiflora Robert F. Hoover 1962-3-23 8540 Contra Costa cultivated in Tilden Park Botanic Garden. Propagated from near Vine HIll School, Sonoma co. Comment
  CHSC20599  Arctostaphylos glandulosa Robert A. Schlising 1962-2-21 2081 Contra Costa Coast Ranges. Berkeley-Oakland Hills of westernmost part of county. Comment
  OBI14772  Arctostaphylos glandulosa H. E. McMinn 1923-3-6 875 Contra Costa Sycamore Canon, Mt. Diablo Comment
  JEPS81633  Arctostaphylos glandulosa subsp. glandulosa Roger Raiche 1982-1-1 20043 Contra Costa near Grizzly Peak; Claremont Canyon Comment
  UC1120123  Arctostaphylos glandulosa subsp. glandulosa N. French 1933-3-13 34 Contra Costa above dam; San Francisco Quadrangle, San Pablo Comment
  CAS-BOT-BC24654  Arctostaphylos glauca Mary L. Bowerman 1930-6-22 362 Contra Costa Mount Diablo, Mitchell Canyon. Comment
  CAS-BOT-BC24655  Arctostaphylos glauca Mary L. Bowerman 1933-3-11 1748 Contra Costa Mount Diablo, Fossil Ridge, outer s. face: In gully nw. of South Gate. Comment
  CAS-BOT-BC24662  Arctostaphylos glauca Brandegee 1889-1-1 5 Contra Costa Antioch. Comment
  UC2028040  Arctostaphylos glauca Barbara Ertter 1998-3-7 15929 Contra Costa Southwest side of Mount Diablo, west-most knoll on Fossil Ridge, at end of fire road. Comment
  RSA632820  Arctostaphylos laevigata Jon E. Keeley 1996-6-24 27579 Contra Costa Above Rock City, Mt. Diablo. 540 Comment
  SD103747  Arctostaphylos manzanita Walter Knight, Irja Knight 1979-5-31 3376 Contra Costa Morgan Territory Regional Land Bank Comment
Read comments
Jul 12 2011
  CAS-BOT-BC38877  Arctostaphylos manzanita subsp. laevigata Lewis S. Rose 1934-2-1 34012 Contra Costa Sandstone hills, S. slope, Mt. Diablo 609 Comment
  POM367351  Arctostaphylos manzanita subsp. laevigata L. S. Rose 1949-3-24 49014 Contra Costa W slope of Mt Diablo, near Rock City. 609 Comment
  RSA122399  Arctostaphylos manzanita subsp. laevigata H. A. Jensen 1938-10-27 451 Contra Costa Head of Curry Canyon 518 Comment
  SBBG21345  Arctostaphylos manzanita subsp. laevigata V. Haraden 1941-7-18 10 Contra Costa near Nortonville 121 Comment
  UC549750  Arctostaphylos manzanita subsp. laevigata J. E. Adams 1934-3-19 689 Contra Costa Mt. Diablo Comment
  UC692217  Arctostaphylos manzanita subsp. laevigata Mary L. Bowerman 1932-1-30 1084 Contra Costa near firetrail w northeast fork of Sycamore Creek ((turn off ridge at fence where main ridge bends abruptly to north, follow fence)); Mount Diablo, Inner Black Hills Comment
  UC692219  Arctostaphylos manzanita subsp. laevigata Mary L. Bowerman 1931-3-1 542 Contra Costa e meridian (w edge of chaparral); Mount Diablo, Inner Black Hills Comment
  UC692515  Arctostaphylos manzanita subsp. laevigata Mary L. Bowerman 1931-9-20 1043 Contra Costa little above road Mount Diablo, Fossil (Rock City) Ridge Comment
  OBI14658  Arctostaphylos manzanita subsp. laevigata H. E. McMinn 1936-4-11 4418 Contra Costa Mt Diablo-head of Sycamore Canyon Comment
  SEINET11977794  Arctostaphylos manzanita subsp. laevigata L. S. Rose 1934-1 34040 Contra Costa S slope Mt. Diablo, 8 mi NE Danville Comment
  CAS-BOT-BC24395  Arctostaphylos manzanita subsp. manzanita M. Boone 1981-2-22 004 Contra Costa Mt. Diablo State Park 10.8 mi. from parks N. gate. Comment
  POM193975  Arctostaphylos manzanita subsp. manzanita J. T. Howell 1926-3-7 1665 Contra Costa Mt. Diablo on old wagon road. Comment
  SBBG114892  Arctostaphylos pallida C. Bornstein 1999-3-20 Contra Costa Sobrante Ridge Regional Preserve 243 Comment
  JEPS19848  Arctostaphylos tomentosa subsp. crustacea W. L. Jepson 1914-1-31 5718 Contra Costa Moraga Ridge Oakland Hills 457 Comment
  JEPS98839  Arctostaphylos tomentosa subsp. crustacea James B. Roof 1964-10-7 Contra Costa Head of Dan Cook Canyon; Mt. Diablo, Rock City Comment
  RSA202863  Arctostaphylos tomentosa subsp. crustacea Edward Lee 1935-12-28 1702 Contra Costa Western end of Las Trampas Ridge Comment
Read comments
Jul 2 2011
  UC1120126  Arctostaphylos tomentosa subsp. crustacea R. C. Wilson 1935-3-27 149 Contra Costa 1 mi s Cave Pt.; Mount Diablo Quadrangle Comment
  RSA0029783  Arctostaphylos tomentosa subsp. crustacea Barbara Ertter, L. Vorobik 2000-1-9 16889 Contra Costa Las Trampas Regional Wilderness in East Bay Hills west of Danville. Comment
  UC2046014  Arctostaphylos viscida subsp. mariposa Stephen W. Edwards July, 2012 s.n. Contra Costa Pleasant Hill, along Taylor Blvd. Comment
  UC2046013  Arctostaphylos viscida subsp. viscida Stephen W. Edwards July, 2012 s.n. Contra Costa Martinez. Comment
  HSC3262  Aristolochia californica Greg Bos 1963-3-9 28 Contra Costa Pinole Valley Rd., SE of Pinole 61 Comment
  POM87995  Aristolochia californica H. M. Hall 1900-3-23 s.n. Contra Costa Lauterwasser Creek Comment
  UCSB24029  Aristolochia californica Olson, Glen 1968-3-21 Contra Costa Fifty yards on the north side of School Street, 0.4 mile east of its junction with Moraga Road in Lafayette 106 Comment
  SEINET10669563  Arnica cordifolia John G. Lemmon 1872-1 Lemmon s.n. Contra Costa Summit of Mount Diablo. Comment
  RSA94492  Arnica discoidea F. W. Peirson 1923-7-1 3919 Contra Costa Mt. Diablo Comment
  UC2028262  Arnica discoidea Barbara Ertter 1999-6-12 16718 Contra Costa Head of West Branch Alamo Creek on south flank of Mount Diablo, spur road to powerline south from Knobcone Point Road at park boundary. Comment
  JEPS100118  Artemisia californica A. Langston 2003-9-16 AL 90 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS111689  Artemisia californica D. G. Kelch 2004-3-5 04 .7 Contra Costa Martinez - Rankin Park 56 Comment
  CAS-BOT-BC90298  Artemisia douglasiana Walter Knight; Joanne Dean 1978-8-14 3132 Contra Costa Browns Island Comment
  CDA42352  Artemisia douglasiana D. G. Kelch, Vince Guise 2012-7-26 12 .238 Contra Costa Wildcat Canyon Park, Alvarado Unit. Comment
  JEPS99962  Artemisia douglasiana A. Langston 2003-7-28 AL 74 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC691721  Artemisia douglasiana Mary L. Bowerman 1930-8-24 414 Contra Costa Mitchell Canyon Mount Diablo, Mitchell Canyon Comment
  RSA0027950  Artemisia douglasiana Barbara Ertter 1997-9-7 15794 Contra Costa North side of Mount Diablo, Donner Creek crossing at south end of Hetherington Trail. Comment
  HSC29723  Arundo donax J. D. Ackerman, A. M. Montalvo 1973-12-20 124 Contra Costa Hwy. 4 at Byron Comment
  JEPS87910  Asarum caudatum Barbara Ertter, Chris Thayer 1993-5-7 11698 Contra Costa on Wildcat Canyon Road Hopkins Spring 1/2 mi se Inspiration Point (East Bay Municipal Utilities District Land e of Tilden Park); e of Tilden Park, Hopkins Spring 304 Comment
  UC1123499  Asclepias californica C. M. Belshaw 1936-5-15 2131 Contra Costa 1/2 mi wsw Stewartsville; Mt. Diablo Quadrangle Comment
  UC2027815  Asclepias californica Barbara Ertter with Holly Forbes 1997-4-20 15553 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  CDA28791  Asclepias cordifolia D. G. Kelch, Troy MacGregor 2009-5-24 9 .302 Contra Costa Carquinez Strait; Carquinez Loop Trail S of Ozol, S-SW of Martinez, nr Wolcott Ln . Comment
  JEPS15235  Asclepias cordifolia Rimo Bacigalupi with G. Thomas Robbins 1956-5-11 5642 Contra Costa 1/4 mi above and nw Glen Frazier Station on the Santa Fe Railway; Franklin Canyon 106 Comment
  JEPS100125  Asclepias fascicularis A. Langston 2003-7-24 AL 69 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC691840  Asclepias fascicularis Mary L. Bowerman 1932-11-25 1667 Contra Costa Silver Spring Mount Diablo Comment
  UCR16092  Asclepias fascicularis Robin Maetche, Geoffrey Matthews 1971-7-4 s.n. Contra Costa 1 mi below North [Gate Road] entrance to Mt. Diablo State Park, Concord 427 Comment
  UC2013060  Asclepias fascicularis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14916 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek Comment
  RSA721531  Aster chilensis Mary L. Bowerman 1993-10-19 s.n. Contra Costa Mount Diablo. Marsh Creek near Russelman Road. Comment
  CDA31373  Aster radulinus D. G. Kelch 2006-8-11 6 .375 Contra Costa Carquinez Strait.; Top of Edward s Canyon. Crockett. Comment
  RSA417742  Aster radulinus M. B. Dunkle 1931-7-18 2501 Contra Costa Strawberry Canyon, Berkeley 152 Comment
  RSA417743  Aster radulinus M. B. Dunkle 1931-7-18 2532 Contra Costa Strawberry Canyon, Berkeley 152 Comment
  SEINET11851717  Aster subulatus var. ligulatus L. S. Rose 1938-1 38312 Contra Costa Byron 3 Comment
  CAS-BOT-BC180529  Astragalus asymmetricus Katharine Brandegee 1908-1-1 s.n. Contra Costa Near Antioch. Comment
  CAS-BOT-BC180571  Astragalus asymmetricus Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mt. Diablo Comment
  CAS-BOT-BC180572  Astragalus asymmetricus Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mt. Diablo Comment
  UC1128839  Astragalus asymmetricus G. T. Nordstrom 1937-10-28 1404 Contra Costa 1.4 mi nne Somersville; Mt. Diablo Quad., nne of Somersville Comment
  UC13388  Astragalus asymmetricus F. T. Bioletti 1892-1 Contra Costa Byron Comment
  UC13432  Astragalus gambelianus State Survey 1862-5-12 1071 Contra Costa Mt. Diablo Comment
Read comments
Jan 20 2011
  UC635299  Astragalus gambelianus H. L. Mason 1928-4-15 4345 Contra Costa Moraga Ridge Comment
  JEPS116914  Astragalus gambelianus David Gowen 2009-4-4 980 Contra Costa Hard packed sandy area just south of Las Trampas Ridge Trail and about 1/4 mile west of junction with Del Amigo Trail. Comment
  SEINET10936877  Astragalus gambelianus John G. Lemmon 1872-1 Lemmon s.n. Contra Costa Mt. Diablo. Comment
  CAS-BOT-BC193336  Astragalus tener var. tener Alice Eastwood 1914-3-14 3818 Contra Costa Byron Springs Comment
  SEINET3869489  Athyrium filix-femina Kaye H. Thorne, L. Thorne; N. Thorne; J. Chandler 1986-7-27 4983 Contra Costa Franks Tract, along San Joaquin River delta, sand mound slough. SE portion Bethel Slough.; 0 610 Comment
  CAS-BOT-BC66049  Athyrium filix-femina var. cyclosorum Brian Atwater 1978-10-24 BA- 171 Contra Costa between Bethel Island and Holland Tract Comment
  CAS-BOT-BC17455  Athysanus pusillus Alice Eastwood 1914-2-24 3739 Contra Costa Antioch. Comment
  SEINET12004480  Athysanus pusillus L. S. Rose 1932-1 32107 Contra Costa Nortonville Comment
  SEINET6069536  Athysanus pusillus Unknown 1931-3-10 5754 Contra Costa Mt. Diablo. East side. 7 miles from Clayton on Livermore Road. Comment
  RSA739722  Atriplex argentea subsp. expansa John Dittes 2006-10-26 1414 Contra Costa San Joaquin Valley (foothills near NW edge) 2 air mile S of Marsh Creek Reservoir Gauging Station, 1.6 air mile SW of intersection of Camino Diablo and Vasco Road, Contra Costa Water District s Los Vaqueros Watershed Mitigation. 67 Comment
  UCD97257  Atriplex argentea var. expansa Robert E. Preston; Eva Buxton 1994-8-4 675 Contra Costa east end of Briones Valley, west of Marsh Creek Reservoir. 60 Comment
  CAS-BOT-BC168564  Atriplex cordulata Walter Knight 1977-7-4 s.n. Contra Costa Black Diamond Mines Regional Preserve near Antioch. About 1 mile south of Contra Loma Regional Park 45 Comment
  JEPS99040  Atriplex coronata Robert E. Preston & Eva Buxton 1994-8-4 618 Contra Costa 0.9 mi NW Marsh Creek Reservoir. 76 Comment
  SEINET4133821  Atriplex fruticulosa Howard C. Stutz, G. L. Chu 1991-4-12 95463 Contra Costa 2 mi. S of Byron, E side of road in 'native' pasture.; 0 Comment
  SEINET4134956  Atriplex heterosperma Howard C. Stutz 1990-8-17 95340 Contra Costa No. Livermore.; 0 Comment
  RSA293440  Atriplex joaquinana Reino Alava 1958-6-6 2136 Contra Costa 3 miles south of Byron, between the highway south and the railroad track Comment
  RSA293441  Atriplex joaquinana Reino Alava 1958-6-6 2138 Contra Costa 3 miles south of Byron, between the highway south and the railroad track Comment
  JEPS111798  Atriplex lentiformis A. G. Murdock 2004-6-4 320 Contra Costa Pacheco Marsh On east end of diked marsh near road, only in highest point of old marsh (now dry ground) 5 Comment
  JEPS41046  Atriplex leucophylla Rimo Bacigalupi and L. R. Heckard 1965-5-11 9071 Contra Costa on strand at n end Brooks Island (in San Francisco Bay sw of Richmond); San Francisco Bay, sw of Richmond, n end Brooks Island Comment
  UCD97555  Atriplex minuscula Robert E. Preston 1996-7-30 988 Contra Costa on both sides of Greenville Road, 1/2 mile south of I-580. Comment
Read comments
Sep 3 2012
  UCD158699  Atriplex prostrata James A. Neilson Jr. 1972-10-22 3509 Contra Costa Walnut Creek drainage. Elevation estimated in Google Earth by label maker. 1 Comment
  SEINET5345887  Atriplex semibaccata H. Yates 1934-9-2 4064 Contra Costa 1 mile northeast of Danville Comment
  JEPS111808  Atriplex triangularis D. G. Kelch 2003-8-13 03 .95 Contra Costa Martinez Marsh 1 Comment
  SD211583  Atriplex triangularis Barbara Ertter, Elizabeth Neese 1988-10-15 7979 Contra Costa Salicornia marsh West of I-580 in El Cerrito, West side along Rydin Road North of Central Avenue; edge of roadbank and marsh Comment
  CDA19822  Avena barbata P. Akers 2002-5-11 s.n. Contra Costa Northern California; Mt Diablo Summit Trail at water tank picnic area. 873 Comment
  JEPS75537  Avena barbata P. F. Yorks 1976-4-28 144 Contra Costa on Hampton Rd 1.3 to 1.9 km s Bear Creek Road (n of Briones Reservoir); Hamton Road Natural Reserve Comment
  CDA19824  Avena fatua P. Akers 2002-5-11 s.n.- 1 a Contra Costa Northern California; Mt Diablo Rd. 205 Comment
  UC53686  Avena fatua J. Burtt Davy 1900-5-24 6537 Contra Costa Pt. Richmond Comment
  UC606745  Avena fatua Edward Lee 1936-4-19 1972 Contra Costa Red Rock San Francisco Bay (foot of bluff on e shore of island) Comment
  UCD38559  Avena fatua var. glabrata Beecher Crampton 1956-5-14 3418 Contra Costa 0.5 mile west of Martinez. Comment
  UCD56372  Avena fatua var. glabrata Beecher Crampton 1956-5-14 3418 Contra Costa 1/2 mile northwest of Martinez. On the road to Crockett. Comment
  UC1619933  Azolla filiculoides Barbara Ertter, Brad Olson 1991-9-28 10849 Contra Costa S end San Pablo Reservoir between Orinda and El Sobrante 97 Comment
  UC1618405  Baccharis glutinosa Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10696 Contra Costa n. Pittsburg (Browns Isl., near confluence of Sacramento & San Joaquin rivers, opposite Pittsburg Marina, flat in center of w. end of island); Browns Island Comment
  OBI37081  Baccharis pilularis Calvin Craig 1983-11-5 20 Contra Costa Colelcted on North east side of Mt. Diablo Comment
  CAS-BOT-BC98189  Baccharis salicifolia Walter Knight; I. Knight; J. T. Howell; E. McClintock; S. Rae; B. Doyle 1978-9-5 3207 Contra Costa Browns Island Comment
  UC202943  Baccharis salicifolia subsp. salicifolia Chesnut and Drew 1889-4-17 Contra Costa Clayton Comment
  UC30399  Baccharis salicifolia subsp. salicifolia H. N. Bolander 1866-4-1 6162 Contra Costa near Mount Diablo Comment
  CDA21555  Bassia hyssopifolia D. G. Kelch, Michael Park 2008-9-1 8 .293 Contra Costa Carquinez Strait; 200 m W of Pacheco Slough, E of Martinez. Comment
  JEPS108533  Bellardia trixago Lisa Schultheis with Kevin Hintsa 1995-4-25 70 -95 Contra Costa Mount Diablo. Along connector trail between Pine Canyon and the Brioines/Mount Diablo Trail Comment
  SEINET13390640  Bellardia trixago C. C. Hall 1911-5-20 8835 Contra Costa Near Concord. 100 Comment
  UC2012948  Beta vulgaris Barbara Ertter 1990-10-24 9685 Contra Costa Martinez Regional Shoreline on Carquinez Strait. Comment
  NY31015  Blennosperma californicum L. S. Rose 1933-3-10 33008 Contra Costa Marsh Creek Comment
  JEPS18383  Blennosperma nanum var. nanum Rimo Bacigalupi with F. Chisaki 1957-3-27 5761 Contra Costa 1/2 mi w, 3 1/2 mi se of Antioch, jct of Lone Tree Way and Hillcrest Ave Lone Tree School 39 Comment
  SBBG45059  Blennosperma nanum var. nanum A. Carter 1937-3-28 1225 Contra Costa Marsh Crk Rd, ca. 15 mi E of Concord 152 Comment
  UC1950447  Blennosperma nanum var. nanum Barbara Ertter 1992-3-8 10908 Contra Costa Byron Springs Road 4-5 miles south of junction with J4, near Armstrong Road Comment
  UC2070516  Blennosperma nanum var. nanum Barbara Ertter with Steve Matson 2003-3-15 18108 Contra Costa Black Diamond Mines Regional Preserve, Black Diamond Trail in SW corner of park. Comment
  CAS-BOT-BC100339  Blepharizonia plumosa T. S. Brandegee Sept. 1883 s.n. Contra Costa Antioch Comment
  JEPS19359  Blepharizonia plumosa H. M. Hall 1916-8-17 10275 Contra Costa Los Medanos Region of San Francisco Bay, Suisun Bay Comment
  UC88954  Blepharizonia plumosa Katherine Curran (= Katherine Curran Brandegee) Sep 1883 Contra Costa Antioch; near Judsonville Comment
Read comments
Jan 22 2009
  CAS-BOT-BC478856  Bloomeria crocea var. aurea W. H. Brewer 1862-6-29 1291 Contra Costa Pacheco Pass near Camp 77 Comment
  CAS-BOT-BC15966  Boechera breweri subsp. breweri A. D. E. Elmer 1903-6-1 5096 Contra Costa Mount Diablo. Comment
  UC691073  Boechera breweri subsp. breweri Mary L. Bowerman 1932-3-27 1142 Contra Costa Mitchell Rock Mount Diablo Comment
  UC855336  Boechera breweri subsp. breweri Alice Eastwood 1915-5-30 4513 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC15959  Boechera breweri subsp. breweri E. W. Hicks 1917-3-24 111 Contra Costa Mount Diablo. On the western slope of the mountain. 1067 Comment
  CAS-BOT-BC15968  Boechera breweri subsp. breweri W. W. Carruth 1901-3-1 s.n. Contra Costa Mount Diablo near summit. Comment
  SEINET5340097  Boechera breweri subsp. breweri W. C. Blasdale 1896-2-28 s.n. Contra Costa Mt. Diablo Comment
  JEPS2846  Bolboschoenus maritimus subsp. paludosus J. Burtt Davy 1897-9-4 4075 Contra Costa Stege; ; Stege, Contra Costa Co. Comment
  JEPS111627  Bowlesia incana D. G. Kelch 2005-4-15 05 .139 Contra Costa Rodeo Creek 100 Comment
  UC2028400  Brachypodium distachyon Barbara Ertter with Dan Norris 1998-6-18 16222 Contra Costa Devil's Slide trail from Knobcone Point Road, south side of Mount Diablo Comment
  UC1126853  Brassica nigra R. C. Wilson 1935-2-27 116 Contra Costa 1 mi w of Kirker Pass; Quadrangle Mount Diablo. 152 Comment
  UC691083  Brassica nigra Mary L. Bowerman 1938-5-25 3633 Contra Costa Mount Diablo. North Road 2 miles from North Gate. 182 Comment
  CDA3604  Brassica rapa A. G. Murdock, D. G. Kelch 2004-3-19 217 Contra Costa Carquinez Strait Region; Luzon. Sycamore Avenue just east of Rodeo/Hercules where train crosses Highway 4 (Luzon). Comment
  JEPS111852  Brassica rapa A. G. Murdock 2004-3-19 217 Contra Costa Luzon Sycamore Ave. just east of Rodeo/Hercules where train crosses Highway 4 (Luzon). 60 Comment
  JEPS78174  Brassica rapa Gary W. Zamzow 1973-1-26 125 Contra Costa 300 m. s. of Central Ave. overpass & 100 m. w. of Hoffman Blvd. on landfill at edge of bay Richmond Comment
  CAS-BOT-BC36724  Brassica rapa R. E. Frenkel 1963-12-4 313 Contra Costa On California Highway 21, Market Plaza Center, Alamo. 79 Comment
  UC1818971  Brickellia californica Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14534 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, woods above ranch. 365 Comment
  UC1795697  Briza maxima Barbara Ertter, Chris Thayer 1995-4-25 13999 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd at northeast FK of Sycamore Creek. 396 Comment
  CHSC116650  Briza minor Lowell Ahart; Josephine Guardino 2016-4-19 20789 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant .Below the high water line of Los Vaqueros Reservoir, 1.4 miles northwest of Los Vaqueros Reservoir Marina, 1,9 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 144 Comment
  UC1555378  Brodiaea elegans subsp. elegans Jerry Powell 1988-5-18 1538 Contra Costa meadow west Richmond, Point Molate Comment
  UCD38557  Bromus berteroanus Beecher Crampton 1956-5-14 3415 Contra Costa 0.5 mile northwest of Martinez. Comment
  UC2032822  Bromus carinatus Doran, Andrew Scott 2012-3-20 692 Contra Costa North end of Brooks Island along ridge overlooking artificial spit, southwest of caretakers residence. Comment
  SEINET191354 Image available Bromus carinatus var. carinatus A. A. Beetle 1942-3-22 2931 Contra Costa Brooks Island, San Francisco Bay near Richmond. Comment
  UC53630  Bromus carinatus var. carinatus Joseph Burtt Davy 1900-3-24 6543 Contra Costa Potrero Comment
  UC697129  Bromus carinatus var. carinatus Mary L. Bowerman 1935-5-1 2947 Contra Costa West Road 6.7 mi from entrance, Mount Diablo West Road; Mount Diablo, West Road 640 Comment
  SEINET11695933  Bromus carinatus var. marginatus Unknown 1956-5-14 3393 Contra Costa 7 mi SW of Antioch, just E of old mining town of Nortonville Comment
  UCD84945  Bromus diandrus Chuck Hughes 2010-3-29 217 Contra Costa About 0.7 mile south of Vasco Road. 238 Comment
  CAS-BOT-BC156068  Bromus diandrus Mary L. Bowerman 1935-5-25 3068 Contra Costa South of the summit and east of the haripin turn on the highway. 1066 Comment
  CAS-BOT-BC155470  Bromus hordeaceus Alice Eastwood 1921-4-18 10263 Contra Costa Antioch. Comment
  JEPS100024  Bromus hordeaceus G. Smick 2003-3-27 GAS 95 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  POM300689  Bromus hordeaceus Mary L. Bowerman 1933-4-15 1870 Contra Costa Canyon south of Arroyo del Cerro: Rocky knoll 250 feet below spring. Comment
  POM300690  Bromus hordeaceus Mary L. Bowerman 1931-5-13 839 Contra Costa Pine canyon floor one mile above the sulphur spring Comment
  UC1818908  Bromus hordeaceus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14036 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassland flat near ponds. Comment
  UC60202  Bromus hordeaceus J. B. Davy 1898-1 Contra Costa Mount Diablo Region, Danville Danville; Mount Diablo Region, Danville Comment
  UC697134  Bromus hordeaceus Mary L. Bowerman 1931-4-4 644 Contra Costa Mount Diablo, West Raod, about 1 mi from entrance Mount Diablo; , West Raod Comment
  UC2028545  Bromus hordeaceus Barbara Ertter 1998-4-4 15949 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, grasslands along creek south of Indian Valley School. Comment
  SEINET5607271 Image available Bromus rigidus Rachel Van Noord 1998-1 6 Contra Costa Dinosaur Hill Park, Pleasant Hill Comment
  CDA31607  Bromus stamineus D. G. Kelch, A. G. Murdock 2005-6-27 5 .395 Contra Costa Carquinez Strait; 6th Street at Lillian Street, Crockett. Comment
  UC53715  Bromus trinii Jos. Burtt Davy 1900-3-24 6539 Contra Costa Point Richmond Comment
  UC692338  Bromus trinii Mary L. Bowerman 1935-4-17 2844 c Contra Costa North Road 2 mi from North Gate (immediately e of section line); Mount Diablo, North Road 304 Comment
  UC2028356  Caesalpinia gilliesii Barbara Ertter with Tony Morosco 1998-7-11 16374 Contra Costa Along Willow Avenue near SW corner of Antioch National Wildlife Refuge Comment
  JEPS84819  Calamagrostis rubescens J. Stratford 1981-6-8 Contra Costa Huckleberry Trail Huckleberry Botanic Regional Preserve Comment
Read comments
Aug 20 2008
  JEPS120267  Calamintha sylvatica Barbara Ertter with David Gowen 2012-6-9 21019 Contra Costa lower Vollmer Peak Trail paralleling South Drive, southeastern Tilden Park in Berkeley Hills Comment
  CAS-BOT-BC233994  Calandrinia breweri R. F. Hoover 1939-4-13 4019 Contra Costa Head of Markley Canyon (west branch) Comment
  CAS-BOT-BC438373  Calandrinia ciliata Mary L. Bowerman 1939-5-2 3741 Contra Costa Mount Diablo. By road to Barbecue Terrace (off South Road) 563 Comment
  JEPS68965  Calandrinia ciliata Edward Lee 1935-3-10 1298 Contra Costa Nortonville; (s watershed of Kirker Creek) Comment
  UC691992  Calochortus Mary L. Bowerman 1933-5-22 2169 Contra Costa e of Knobcone Point (on n-face (2 small ridges w of n ridge)); Mount Diablo, Inner Black Hills Comment
  UC1481552  Calochortus albus Neil Havlik 1980-5-1 910 Contra Costa 0.5 mi nw Eugene O'Neill Home; San Ramon Comment
  UC2028348  Calochortus luteus Barbara Ertter with Susan D'Alcamo 1998-6-12 16197 Contra Costa Along Curry Canyon Road just east of Curry Point, south side of Mount Diablo Comment
  CAS-BOT-BC132489  Calochortus pulchellus A. D. E. Elmer 1903-6-1 4631 Contra Costa Mount Diablo Comment
  CAS-BOT-BC132506  Calochortus pulchellus John Thomas Howell 1940-4-21 15397 Contra Costa Pine Canyon, Mt. Diablo Comment
  JEPS55634  Calochortus pulchellus Wayne Roderick 1967-5-30 Contra Costa ca 7 rd mi e Clayton (Marsh Creek Road, between Marsh Creek Stables and Inn) Comment
  UC1134509  Calochortus pulchellus C. M. Belshaw 1936-5-12 2104 Contra Costa 1 mi s Tassajero Rd. summit; Mt. Diablo 304 Comment
Read comments
Dec 29 2006
  UC843700  Calochortus pulchellus Harold V. Manor 1913-5-18 Contra Costa Mt. Diablo Comment
  UCD139551  Calochortus pulchellus H. A. Stout; T. C. Wainwright 1980-4-13 3 Contra Costa Mallory Ranch, around 1/2 mile east of Morgan Territory road. 609 Comment
  CDA9192  Calochortus superbus Christopher Thayer 1996-6-7 s.n. Contra Costa On SW facing grassy slopes on Oursan Trail not far above Hampton Road. EBMUD property. 0 Comment
  RSA757049  Calochortus umbellatus Rudolf Schmid 1997-4-8 1997 -2 Contra Costa Hillside Natural Area, El Cerrito; southwest of Kent Drive- Regency Ct. entrance, north side of junction of the two main fire roads 145 Comment
  UC1779713  Calochortus umbellatus Rudolf Schmid 1997-4-8 1997 -2 Contra Costa Hillside Natural Area, El Cerrito; SW of Kent Dr. - Regency Ct. entrance, N side of juncttion of the two main fire roads. 144 Comment
Read comments
Apr 2 2012
  UC1779714  Calochortus umbellatus Rudolf Schmid 1997-4-4 1997 -1 Contra Costa Hillside Natural Area, El Cerrito; SW of Kent Dr. - Regency Ct. entrance, N side of juncttion of the two main fire roads. 144 Comment
Read comments
Apr 2 2012
  CAS-BOT-BC418628  Calystegia R. K. Brummitt; B. Ertter 2012-6-17 22061 Contra Costa Berkeley Hills, Tilden Park, Seaview Trail north of Vollmer Peak Comment
  CAS-BOT-BC436385  Calystegia Alice Eastwood 1915-5-30 4441 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC224751  Calystegia malacophylla subsp. pedicellata John Thomas Howell 1942-5-24 16964 Contra Costa Near Deer Flat, Mt. Diablo Comment
  UC23184  Calystegia malacophylla subsp. pedicellata Edw. L. Greene 1892-6-20 Contra Costa Mt. Diablo Comment
  UC1794950  Calystegia purpurata subsp. purpurata R. K. Brummitt, J. Strother and B. Baldwin 1997-5-27 19605 Contra Costa Mount Diablo, W side, Deer Flat Road 800 Comment
  UC1057486  Calystegia sepium subsp. binghamiae G. Thomas Robbins 1940-5-19 327 Contra Costa San Joaquin River e Antioch; San Joaquin River e of Antioch Comment
  JEPS47838  Calystegia subacaulis W. L. Jepson 1922-6-7 9719 a Contra Costa North Berkeley Hills Comment
  UC1795008  Calystegia subacaulis subsp. subacaulis R. K. Brummitt and B. Ertter 1998-5-13 19835 Contra Costa Mt Diablo, near foot of southern ascent road 260 Comment
  UC198869  Camissonia campestris subsp. campestris Chesnut and Drew 1887-4-18 Contra Costa Antioch Comment
  POM257264  Camissonia campestris subsp. campestris H. L. Mason 1929-3-31 5153 Contra Costa Along San Joaquin River, Antioch. Comment
  RSA186718  Camissonia intermedia D. E. Breedlove 1963-5-2 4698 Contra Costa At entrance to Mt. Diablo State Park 4 miles east of Danville Comment
  POM257269  Camissonia micrantha H. L. Mason 1929-3-31 5160 Contra Costa Along San Joaquin River Comment
  RSA186560  Camissonia micrantha Peter H. Raven 1963-3-29 18143 Contra Costa About 1 mile south of Oakley on State Highway 4 at junction of Brownstone Road Comment
  RSA195470  Camissonia micrantha Peter H. Raven 1963-3-29 18141 Contra Costa Along Sacramento River just above Antioch Comment
  SEINET12189053  Camissonia strigulosa L. S. Rose 1938-1 38223 Contra Costa Antioch 15 Comment
  UC635407  Camissoniopsis intermedia H. L. Mason 1929-3-15 5048 Contra Costa Nortonville Comment
  UC692450  Camissoniopsis intermedia Mary L. Bowerman 1933-5-21 2157 a Contra Costa head of Grape Spring Gully Mount Diablo Comment
  UC874075  Camissoniopsis intermedia Lewis S. Rose 1941-5-15 41229 Contra Costa w. slope Mt. Diablo 274 Comment
  JEPS99590  Campanula exigua Mary Bowerman 1975-6-1 Contra Costa Mount Diablo. Upper Falls Trail a few feet below real 1st creek (not waterfall) coming from horsemen's. Comment
  SEINET10461960  Campanula exigua Rattan 1886-6-14 RATTAN s.n. Contra Costa Summit of Mount Diablo Comment
  UC1789147  Campsis radicans Barbara Ertter 1998-5-10 16370 Contra Costa southeast edge of Antioch Marina. Comment
  CHSC21613  Capsella bursa-pastoris Willis Ball 1975-2-23 438 Contra Costa Contra Loma Regional Park. In area #1. Ca. 10 yds e of restroom facility on n side of lake. 30 Comment
  JEPS83131  Capsella bursa-pastoris R. P. Allen 1935-3-15 113 Contra Costa Pittsburg Comment
  UCSB40236  Capsella bursa-pastoris Fritzke, Sue 1980-3-1 Contra Costa Hills behind Walnut Heights Elementary School, off of Walnut Blvd., 1 mile east of intersection with Walker Rd. 121 Comment
  CAS-BOT-BC37390  Cardamine californica Alice Eastwood 1922-3-17 11087 Contra Costa Mount Diablo. Comment
  JEPS111860  Cardamine californica D. G. Kelch 2004-3-12 04 .23 Contra Costa Pinole Valley Hillside and canyon above Wright Road. Off of Pinole Valley Road 140 Comment
  UC1126900  Cardamine californica R. W. Lundh 1933-3-20 215 Contra Costa 2 mi nw Walnut Creek, Canada del Hambro; Concord Quad. 182 Comment
  UC762889  Cardamine californica R. F. Hoover 1938-2-21 2754 Contra Costa Point Richmond Comment
  UCR17079  Cardamine californica James K. Ryan 1969-3-31 45 Contra Costa Mt. Diablo State Park, 0.25 mi inside S gate entrance at first large turnout on left side of rd, at top of steep hill 701 Comment
  UC2028278  Cardamine californica Barbara Ertter 1999-3-21 16490 Contra Costa NW corner of Miller Knox Regional Shoreline, Potrero Hills SW of Richmond; abandoned trail on north side of crest. Comment
  UCSB2297  Cardamine californica Kamb, Peter; Chisaki, Francia 1950-3-18 Contra Costa Saddle between North and South Peaks of Mt. Diablo 883 Comment
  POM272920  Cardamine californica var. integrifolia Lyman Benson 1931-3-18 2657 Contra Costa Martinez; Mt Range: South Coast; Watershed: Sacramento River. 91 Comment
  UC10326  Cardamine californica var. integrifolia W. H. Brewer 1862-5-1 1039 Contra Costa Walnut Creek Comment
  POM203648  Cardamine californica var. integrifolia J. T. Howell 1933-5-14 11255 Contra Costa Hills east of St. Mary s college Comment
  RSA721865  Cardamine hirsuta Barbara Ertter, Gary Schoolcraft 1996-4-7 14576 Contra Costa Molate Beach Park on San Francisco Bay N of San Rafael Bridge; S end of parking area. Comment
  UC2027761  Cardamine hirsuta Barbara Ertter 1997-2-11 15453 Contra Costa North side of Mount Diablo, Donner Cabin site on Donner Canyon Road. Comment
  CAS-BOT-BC37863  Cardamine oligosperma Mary L. Bowerman 1932-3-6 1100 Contra Costa Mount Diablo. Sycamore Canyon, east fork. Near trail. Comment
  UCR17092  Cardamine oligosperma James K. Ryan 1969-3-31 46 Contra Costa Mt. Diablo State Park, Horseshoe Picnic Area, very close to area entrance 610 Comment
  POM300574  Cardamine oligosperma Mary L. Bowerman 1932-3-6 1100 Contra Costa Sycamore Canyon, east fork: Near trail. Comment
  UC2070559  Cardamine oligosperma var. oligosperma Barbara Ertter 2003-4-9 18140 Contra Costa Shell Ridge Open Space on west base of Mount Diablo, Indian Creek below Fossil Hill Trail crossing. Comment
  CDA3651  Cardaria draba D. G. Kelch, A. G. Murdock 2005-3-25 5 .092 Contra Costa Carquinez Strait Region; Fernandez Ranch. West of Christie Road, south of I-4 (behind golf course) and north of Pinole Peak. Comment
  UC2028217  Carduus pycnocephalus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16129 Contra Costa West-center Lime Ridge Open Space northwest of Mount Diablo. Comment
  CDA15244  Carduus tenuiflorus G. F. Hrusa, D. Crowe 1998-5-8 14375 Contra Costa Sacramento Delta; Dow Chemical property at Pittsburg adjacent to shore of San Joaquin River. Comment
  CDA9484  Carduus tenuiflorus D. G. Kelch, Abigail Moore, Michael Park 2007-5-1 7 .209 Contra Costa Byron Airport. Comment
  CAS-BOT-BC281803  Carduus tenuiflorus David Keck 1941-6-5 5312 Contra Costa Berkeley Hills, Fish Creek Rd, 0.25 mile W of E portal of Broadway Tunnel 335 Comment
  CAS-BOT-BC281805  Carduus tenuiflorus John Thomas Howell 1933-5-21 11323 Contra Costa San Pablo Comment
  CDA29516  Carex barbarae D. G. Kelch, Troy MacGregor 2009-5-1 9 .277 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  JEPS124459  Carex barbarae Daniel Slakey with CNPS Volunteers 2015-6-29 135 Contra Costa Mt. Diablo State Park. Slope above Emmons Canyon, along access trail from Macedo Ranch Staging Area. Comment
  UC1555369  Carex barbarae Jerry Powell 1988-3-8 1526 Contra Costa Point Molate in W Richmond Comment
  UC691965  Carex barbarae Mary L. Bowerman 1983-9-9 2433 Contra Costa Frog Pond, W side Mount Diablo Comment
  JEPS105721  Carex densa David Gowen 2004-9-13 161 Contra Costa Mt. Diablo State Park. Johnny Walker Spring, which is ca. .2 mile above the junction of Angel Kerley Rd. (fire trail) and North Gate Rd., approx. 2200' elev. Comment
  CDA31160  Carex globosa D. G. Kelch, Troy McGregor; Ed Biffin 2010-6-1 10 .227 Contra Costa Mt. Diablo. Knobcone Point Rd. Comment
  UC2028269  Carex globosa Barbara Ertter 1999-6-12 16708 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  RSA720799  Carex nudata Mary L. Bowerman 1977-04 s.n. Contra Costa Mount Diablo. Sycamore Creek canyon. 244 Comment
  CAS-BOT-BC119426  Carex obnupta N. Stone 1941-4-5 23 Contra Costa Lake Anza, Wildcat Canyon. 198 Comment
  UC691961  Carex pellita Mary L. Bowerman 1935-5-16 3000 Contra Costa Russelman Park Road at Gregory Ranch junction; Mount Diablo 289 Comment
  CAS-BOT-BC118346  Carex praegracilis G. Thomas Robbins; John Weiler 1959-5-23 4029 Contra Costa NW edge of Brooks Island, San Francisco Bay, Richmond. Comment
  UC692013  Carex serratodens Mary L. Bowerman 1932-11-19 1653 Contra Costa Elder Spring Mount Diablo Comment
  CAS-BOT-BC117549  Carex serratodens Miss Mary Leolin Bowerman 1936-4-23 3406 Contra Costa Moses Rock Spring. 640 Comment
  SEINET7575209 Image available Carex serratodens Lewis S. Rose 1935-5-16 35163 Contra Costa Mt. Diablo. Comment
  CAS-BOT-BC115561  Carex tumulicola Peter H. Raven 1957-7-5 11051 Contra Costa At tip of Point Isabel. Comment
  CDA37471  Carthamus lanatus Vince Guise 2012-6-12 PDR# 1649643 Contra Costa Concord; Highway 4 at Interstate 680 interchange. 0 Comment
  JEPS74802  Castilleja L. R. Heckard, T. I. Chuang and R. C. Bacigalupi 1975-5-7 4010 Contra Costa ca 0.5 mi e Pinole (just e of Interstate 80, along main route of Santa Fe RR) Comment
  JEPS74803  Castilleja L. R. Heckard, T. I. Chuang and R. C. Bacigalupi 1975-5-7 4011 Contra Costa ca 0.5 mi e Pinole (just e of Interstate 80, along main route of Santa Fe RR) Comment
  HSC87801  Castilleja affinis Jennifer Roth 1979-4-29 35 Contra Costa Clayton, Russleman Park Rd. off March Creek Rd. Concord Mt. Diablo Trail Ride Association grounds. 335 Comment
  RSA516598  Castilleja affinis R. C. Bacigalupi, G. Thomas Robbins 1956-5-11 5643 Contra Costa Near summit of Hampton Road grade, on the Pinole Creek side, over hill north of Bear Creek and leading to Briones Valley School (which is not in Briones Valley). 221 Comment
  RSA639387  Castilleja affinis H. P. Bracelin 1933-6-10 768 Contra Costa Near crest of hills north of Berkeley above Kensington. Comment
  UC26493  Castilleja affinis subsp. affinis Jos. Burtt Davy 1901-4-21 6924 Contra Costa Wildcat Canyon Comment
  UC691558  Castilleja affinis subsp. affinis Mary L. Bowerman 1931-3-28 559 Contra Costa above Mitchell Rock (Mount Diablo); Mount Diablo Comment
  JEPS102905  Castilleja applegatei subsp. martinii Barbara Ertter 2002-6-22 17959 Contra Costa Falls Loop Trail in Donner Basin, S side of Wild Oat Canyon Mount Diablo 213 Comment
  CHSC116632  Castilleja attenuata Lowell Ahart; Josephine Guardino 2016-4-19 20778 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along the sides of the dirt roads, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  JEPS74804  Castilleja attenuata L. R. Heckard, T. I. Chuang and R. Bacigalupi 1975-5-7 4012 Contra Costa ca 0.5 mi e Pinole (just e of Interstate 80, along main route of Santa Fe Railroad) Comment
  UC691581  Castilleja attenuata Mary L. Bowerman 1933-5-4 1990 Contra Costa Rock City Ridge (= Fossil Ridge); Mount Diablo Comment
  JEPS23261  Castilleja densiflora subsp. densiflora G. Thomas Robbins 1959-4-26 4005 Contra Costa about 1 mi ne Giant (about 0.25 mi n of San Pablo Oil Tank Farm) 15 Comment
  CDA15239  Castilleja exserta G. F. Hrusa, D. Crowe 1998-5-8 14370 Contra Costa Sacramento Delta; Dow Chemical property at Pittsburg near shore of San Joaquin River. Comment
  CDA41324  Castilleja exserta subsp. exserta D. G. Kelch 2004-5-7 4 .187 Contra Costa Carquinez Strait; Canada del Cierbo. Comment
  JEPS16805  Castilleja exserta subsp. exserta Rimo Bacigalupi with G. Thomas Robbins 1955-5-4 4983 Contra Costa 1.25 mi e Antioch (near the San Joaquin River) 9 Comment
  JEPS74806  Castilleja exserta subsp. exserta L. R. Heckard, T. I. Chuang and R. Bacigalupi 1975-5-7 4014 Contra Costa ca 0.5 mi e Pinole (just of of Interstate Hwy 80, along main route of Santa Fe Railroad) Comment
  UC673440  Castilleja exserta subsp. exserta H. L. Mason 1929-3-15 5059 Contra Costa about 5 mi from Brentwood (along Marsh Creek Road) Comment
  RSA0068053  Castilleja foliolosa Katie Gallagher, Nick Jensen 2014-4-26 197 Contra Costa Las Trampas Regional Wilderness. 396 Comment
  CAS-BOT-BC241277  Castilleja latifolia Alice Eastwood 1915-6-21 4740 Contra Costa San Leandro Comment
  UC691575  Castilleja rubicundula subsp. lithospermoides Mary L. Bowerman 1931-5-2 787 Contra Costa foot of Eagle Point ridge; Mount Diablo Comment
  UC2028298  Castilleja rubicundula subsp. lithospermoides Barbara Ertter with Dan Norris 1998-6-18 16213 Contra Costa Rock City area on south side of Mount Diablo, trail to Artist Point. Comment
  CAS-BOT-BC41015  Caulanthus flavescens Mary L. Bowerman 1935-4-22 2879 Contra Costa Mount Diablo. North Road 2 miles from North Gate, just west of chaparral. 213 Comment
  CAS-BOT-BC40514  Caulanthus lasiophyllus Alice Eastwood 1921-4-18 10251 Contra Costa Antioch. Comment
  CAS-BOT-BC40515  Caulanthus lasiophyllus W. H. Brewer 1862-4-24 987 Contra Costa Camp 68. Martinez. Comment
  JEPS116912  Caulanthus lasiophyllus David Gowen 2009-4-4 978 Contra Costa West face near summit of hill east of Las Trampas Ridge, just northwest of junction of Del Amigo and Sulpher Springs trails. Comment
  UC2070556  Caulanthus lasiophyllus Barbara Ertter with David Gowen and Mike Park and Victoria Seidman 2004-4-20 18360 Contra Costa Eagle Peak Trail on east side of Twin Peaks, north side of Mount Diablo. Comment
  CAS-BOT-BC48835  Ceanothus cuneatus W. C. Blasdale 1896-2-29 s.n. Contra Costa Mt. Diablo Comment
  UC692617  Ceanothus cuneatus var. cuneatus Mary L. Bowerman 1933-4-9 1843 Contra Costa w fork of Dannor Canyon, Mount Diablo Comment
  CAS-BOT-BC51494  Ceanothus oliganthus var. sorediatus C. H. M. 1919-8-24 s.n. Contra Costa Las Trampas Peak Comment
  JEPS42198  Ceanothus oliganthus var. sorediatus W. L. Jepson 1916-7-16 6814 Contra Costa Oakland hills Comment
  CDA18840  Centaurea calcitrapa J. Vargas 1999-7-19 PDR 1219275 Contra Costa near the junction of Hwy 4 and Willow Pass Rd., nr. Concord. 0 Comment
  JEPS111663  Centaurea melitensis A. G. Murdock 2004-5-28 286 Contra Costa Pinole Peak 205 Comment
  UC691364  Centaurea melitensis Mary L. Bowerman 1930-6-3 237 Contra Costa 1.9 mi from entrance West Road (= North Road); Mount Diablo Comment
  JEPS44120  Centaurea melitensis W. L. Jepson 1922-7-9 9735 Contra Costa El Cerrito salt marsh El Cerrito Comment
  CHSC23349  Centaurea solstitialis Willis Ball 1975-5-20 530 Contra Costa Contra Loma Regional Park. In area #10 ca. 300 yds e of dam. 33 Comment
  JEPS111969  Centaurium davyi Christopher Thayer 1995-6-5 Contra Costa West of Pinole Peak 274 Comment
  UC1795817  Centaurium muehlenbergii Barbara Ertter 1994-6-26 12873 Contra Costa South of Point Molate Beach Park in west Richmond north of San Rafael Bridge, Franciscan Formation bluffs, sheltered bank along beach just south of park boundary. Comment
  CDA36467  Centaurium tenuiflorum Ed Swan 2011-8-18 PDR# 1641228 Contra Costa Orinda; Bear Creek Road near Fire Trail 43-4. 0 Comment
  CDA42426  Centranthus ruber D. G. Kelch, Vince Guise 2012-7-26 12 .233 Contra Costa El Sobrante; Circle Dr. Comment
  JEPS111774  Centranthus ruber D. G. Kelch 2004-6-19 04 .282 Contra Costa Crockett-Tormey Headlands. Along railroad tracks west of Carquinez Bridge Crockett (Valona) Contra Costa County CA 20 Comment
  CAS-BOT-BC288546  Centromadia fitchii James I. McMurphy 1908-10-18 s.n. Contra Costa Antioch Comment
  UC421693  Centromadia fitchii John Thomas Howell 1929-9-21 4388 Contra Costa 1 mi se Clayton Comment
  CAS-BOT-BC288538  Centromadia fitchii David D. Keck 1933-11-2 2616 Contra Costa 1 mile E of Nichols, N part of county Comment
  CAS-BOT-BC288874  Centromadia parryi subsp. congdonii R. E. Preston 1998-10-6 1178 Contra Costa Along flood plain of Alamo Creek, along Dougherty Rd, N of the Alameda/Contra Costa County line 143 Comment
  CAS-BOT-BC288881  Centromadia parryi subsp. congdonii David D. Keck 1933-11-2 2611 Contra Costa 2.7 miles N of Walnut Creek Comment
  CAS-BOT-BC288882  Centromadia parryi subsp. congdonii H. M. Hall 1916-10-14 10283 Contra Costa Pacheco Comment
  CAS-BOT-BC279181  Centromadia pungens subsp. pungens Walter Knight; Irja Knight; et al 1978-9-5 3224 Contra Costa Browns Island Comment
  CAS-BOT-BC279193  Centromadia pungens subsp. pungens R. F. Hoover 1967-4-28 10515 Contra Costa Byron Hot Springs Comment
  JEPS65191  Centromadia pungens subsp. pungens L. R. Heckard 1971-4-15 2476 Contra Costa 3 mi s Byron (at Holey Road) Comment
  CAS-BOT-BC279182  Centromadia pungens subsp. pungens H. M. Hall 1923-10-10 11909 Contra Costa Just west of Pittsburg Comment
  CAS-BOT-BC279195  Centromadia pungens subsp. pungens D. E. Breedlove 1969-10-18 16706 Contra Costa On Deer Hill Road near the junction with Happy Valley Road, Lafayette Comment
  CAS-BOT-BC279197  Centromadia pungens subsp. pungens Alice Eastwood 1923-4-28 11666 Contra Costa Byron Springs Comment
  CAS-BOT-BC279201  Centromadia pungens subsp. pungens L. R. Abrams 1916-7-1 5729 Contra Costa Near Concord - Walnut Creek - Martinez Road Comment
  CAS-BOT-BC279202  Centromadia pungens subsp. pungens Volney Rattan 1886-6-15 s.n. Contra Costa Pacheco Valley Comment
  UC1039525  Cephalanthus occidentalis var. californicus H. L. Mason 1929-9-21 5447 Contra Costa 1 mi from Borden Highway junction with road to Antioch Comment
  RSA0069381  Cerastium glomeratum Katie Gallagher, Nick Jensen 2014-4-26 208 Contra Costa Las Trampas Regional Wilderness. 487 Comment
  JEPS45531  Cercocarpus betuloides var. betuloides W. L. Jepson 1920-9-6 9083 Contra Costa Mount Diablo Comment
  UC565564  Chaenactis glabriuscula var. glabriuscula H. L. Mason 1929-3-31 5157 Contra Costa Antioch, sand dikes along San Joaquin River San Joaquin River, Antioch Comment
  POM54137  Chaenactis glabriuscula var. megacephala C. F. Baker 1903-4-27 2940 Contra Costa Antioch Comment
  RSA181414  Chaenactis glabriuscula var. megacephala James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC284219  Chaenactis glabriuscula var. megacephala Brandegee No date on the label. s.n. Contra Costa Antioch Comment
  JEPS111948  Chamaesyce serpens D. G. Kelch 2003-8-13 03 .118 Contra Costa Martinez Marsh 1 Comment
  UC2062612  Chamaesyce serpens Barbara Ertter with John Ginochio 2002-6-1 17945 a Contra Costa Ginochio house on south side of North Gate Road on NW base of Mount Diablo, lower Arroyo del Cerro. Comment
  UC1328154  Chenopodium album Olive Dyer 1936-9-5 28 w Contra Costa 1/2 mi above San Pablo Ave.; Wildcat Creek Comment
  JEPS111799  Chenopodium murale D. G. Kelch 2005-3-13 05 .46 Contra Costa Crockett - weedy area under Zampa Bridge 4 Comment
  CDA9490  Chenopodium rubrum D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 07 .213-B Contra Costa Byron Airport. Comment
  UC692148  Chorizanthe membranacea Mary L. Bowerman 1930-6-28 403 Contra Costa lower Silver Spring , lower Silver Spring (Mount Diablo) Comment
  POM300580  Chorizanthe membranacea Mary L. Bowerman 1938-5-28 3636 Contra Costa Mount Diablo: North Road 4.7 miles from North Gate. 412 Comment
  JEPS38085  Chrysolepis chrysophylla var. minor H. M. Wheeler 1943-8-15 27500 Contra Costa Moraga Ridge Comment
  JEPS97617  Chrysolepis chrysophylla var. minor R. D. Stone 1980-7-13 265 Contra Costa NE of intersection of Skyline Blvd. and Snake Rd. Huckleberry Trail; Oakland Hills, near Alameda-Contra Costa county line Comment
  UC72145  Cicendia quadrangularis Chesnut and Drew 1889-4-15 Contra Costa Martinez Comment
  UC20919  Cicuta maculata var. bolanderi Jos. Burtt Davy 1900-6-7 6668 Contra Costa near Martinez Comment
  CAS-BOT-BC284424  Cirsium brevistylum Alice Eastwood 1931-5-30 18618 Contra Costa Oak Spring Comment
  POM215028  Cirsium brevistylum Alice Eastwood 1931-5-30 18618 Contra Costa Oak Spring Comment
  UC2070512  Cirsium cymosum Barbara Ertter with Mike Park, David Gowen 2004-7-17 18442 Contra Costa North side Mount Diablo, west of Twin Peaks. Comment
  OBI73068  Cirsium occidentale David J. Keil, with Barbara Ertter et al. 2000-6-18 28815 C Contra Costa Mount Diablo State Park. Lower part of Jumper Trail above Laurel Dell picnic area 914 Comment
  OBI63081  Cirsium occidentale var. californicum R. K. Brummitt, J. Strother, & B. Baldwin, B. Baldwin 1997-5-27 19612 Contra Costa Mt Diablo, W side, near Juniper camp ground 800 Comment
  UC2031459  Cirsium occidentale var. californicum Barbara Ertter with David Gowen, Mike Park, Chris Thayer et al. 2014-4-12 21710 Contra Costa North side of Rhine Canyon Road, Ginochio property on east side of Mount Diablo Comment
  SD245260  Cirsium occidentale var. venustum David Keil, Barbara Ertter, et al 2000-6-18 28815 D Contra Costa Mount Diablo State Park. Lower part of Jumper Trail above Laurel Dell picnic area. 914 Comment
  UC691386  Cirsium vulgare Mary L. Bowerman 1932-11-19 1659 Contra Costa Lower Grapevine Spring Mount Diablo, Lower Grapevine Spring Comment
  UCD161763  Cirsium vulgare James A. Neilson Jr.; Samuel A. Bamberg 1972-10-22 3507 Contra Costa Walnut Creek drainage. (Exact location unknown. Coordinates and elevation estimated by label maker based on collection data from same date.) 1 Comment
  UC1782176  Citrullus colocynthis var. lanatus Rudolf Schmid 2003-9-13 2003 -15 Contra Costa vacant lot, 24 Edwin Dr., Kensington 169 Comment
  UC1122359  Clarkia affinis C. M. Belshaw 1936-5-9 2075 Contra Costa 2 1/4 mi e Clayton (plot 10); Mt. Diablo Quadrangle Comment
  UC692501  Clarkia affinis Mary L. Bowerman 1933-5-18 2123 Contra Costa Blackberry Spring Mount Diablo Comment
  UC1143226  Clarkia affinis H. Lewis and C. Epling 1947-5-2 196 Contra Costa 1 mi w Curry Creek Park Road (Marsh Creek Road) Comment
  UCSC000477  Clarkia affinis C. M. Belshaw 1936-5-13 2018 Contra Costa Mt. Diablo, Round Valley 229 Comment
  RSA0059973  Clarkia amoena subsp. amoena H. de Forest 1930-6-29 s.n. Contra Costa Dry bank on Tunnel Rd. Comment
  JEPS99586  Clarkia biloba Mary Bowerman 1995-7-2 Contra Costa Mount Diablo, foot trail between Back Canyon and Donner Canyon. In Donner side of ridge. Comment
  UC107833  Clarkia biloba Katharine Brandegee June 1905 Contra Costa Port Costa Comment
  UC169380  Clarkia biloba Katharine Brandegee June 1905 Contra Costa Port Costa Comment
  JEPS111566  Clarkia biloba subsp. biloba D. G. Kelch 2003-8-13 03 .124 Contra Costa Vaca Canyon Locally common herb to 20 cm on n facing road cuts 165 Comment
  SDSU8648  Clarkia concinna D. F. Howe 1968-5-20 4518 Contra Costa 5.6 miles north of contra Costa-Alameda Co. line on Morgan Territory Road. Comment
  CAS-BOT-BC163665  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1931-5-16 855 Contra Costa Mount Diablo. Summit Comment
  CAS-BOT-BC163667  Clarkia purpurea subsp. quadrivulnera L. R. Abrams 1916-6-30 5712 Contra Costa Mt. Diablo near lake Comment
  CAS-BOT-BC163676  Clarkia purpurea subsp. quadrivulnera L. R. Abrams 1922-5-25 8040 Contra Costa At spring 4 1/2 mi from Summit, Mt. Diablo Comment
  UC2028319  Clarkia purpurea subsp. quadrivulnera Barbara Ertter, Susan D'Alcamo 1998-6-12 16158 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. Comment
  UC697197  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1931-5-13 843 Contra Costa 1 mi from Sulphur Spring; Mount Diablo, Pine Canyon 167 Comment
  CAS-BOT-BC165453  Clarkia unguiculata John Thomas Howell 1931-5-12 6481 Contra Costa North side of Mt. Diablo Comment
  CAS-BOT-BC165455  Clarkia unguiculata Mary L. Bowerman 1930-6-3 235 Contra Costa North Road 1.9 miles from North Gate 167 Comment
  CAS-BOT-BC439165  Claytonia exigua subsp. exigua Mary L. Bowerman 1932-3-12 1110 Contra Costa Mount Diablo. Alamo Canyon 350 Comment
  CAS-BOT-BC439167  Claytonia exigua subsp. exigua John Thomas Howell 1926-3-7 1676 Contra Costa Mt. Diablo Comment
  UC1587532  Claytonia exigua subsp. exigua K. L. Chambers 1977-4-1 4266 Contra Costa ca .12 mi above Deer Flat (on trail to Deer Flat from the summit road, Mt. Diablo); Mt. Diablo Comment
  UC1587533  Claytonia exigua subsp. exigua K. L. Chambers 1977-4-1 4265 Contra Costa ca 0.25 mi from Deer Flat (on trail to Deer Flat from the summit road, Mt. Diablo); Mt. Diablo Comment
  UC692543  Claytonia exigua subsp. exigua Mary L. Bowerman 1933-4-15 1875 Contra Costa s of (canyon s, below spring) Arroyo del Cerro; Mount Diablo 76 Comment
  UC692548  Claytonia exigua subsp. exigua Mary L. Bowerman 1935-3-16 2732 Contra Costa Peach Tree Springs Road Mount Diablo (e fork of canyon) 228 Comment
  UC7871  Claytonia gypsophiloides Edw. L. Greene Jun 1892 Contra Costa Mount Diablo Comment
  CAS-BOT-BC439329  Claytonia gypsophiloides Paul F. Covel 1936-5-17 129 Contra Costa Mt Diablo (summit-North Pk Trail) Comment
  SEINET198599 Image available Claytonia gypsophiloides P. Kamb, F Chisaki 1950-3-18 1638 Contra Costa Saddle betwee4n N and S peaks of Mt. Diablo 880 Comment
  CAS-BOT-BC439436  Claytonia parviflora subsp. parviflora Mary L. Bowerman 1930-6-14 331 Contra Costa Mount Diablo. Meridian Peak Summit Comment
  RSA31654  Claytonia perfoliata A. A. Heller 1908-4-17 8909 Contra Costa Tracy 11 Comment
  UC615386  Claytonia perfoliata subsp. perfoliata Beryl O. Schreiber 1932-2-28 32 Contra Costa near Concord Comment
  CAS-BOT-BC440078  Claytonia perfoliata subsp. perfoliata Lewis S. Rose 1933-3-10 33013 Contra Costa Brentwood Comment
  RSA215990  Clematis lasiantha Paul F. Covel 1938-6-26 1516 Contra Costa Las Trampas Canyon (behind St Mary's) Comment
  UC545780  Clematis lasiantha Annetta M. Carter 1935-6-1 873 Contra Costa n.w. slope of main peak Mt. Diablo 975 Comment
  RSA0028269  Clinopodium vulgare Barbara Ertter, David Gowen 2012-6-9 21018 Contra Costa Lower Vollmer Peak Trail paralleling South Drive, southeastern Tilden Park in Berkeley Hills. 426 Comment
  SEINET9290098  Clytostoma callistegioides Unknown 2009-6-3 Contra Costa Residence in San Ramon, California. See USCH plant ID files. Plant sent to USCH for identification. Query letter included on specimen. Comment
  UC41790  Collinsia bartsiifolia var. bartsiifolia Chestnut and Drew 1889-4-16 Contra Costa Concord Comment
  POM194561  Collinsia sparsiflora Y. Mexia 1929-4-21 2376 Contra Costa Moraga Valley. Comment
  JEPS6336  Collinsia sparsiflora var. collina Mary L. Bowerman 1933-4-9 1836 Contra Costa w fork Donner Canyon Mount Diablo (Mount Diablo); Donner Canyon 243 Comment
  UC1301187  Collinsia sparsiflora var. collina Helen K. Sharsmith 1963-3-3 5192 a Contra Costa near Moraga (Las Trampas Canyon E of St. Mary's College); Las Trampas Canyon 259 Comment
  UC691585  Collinsia sparsiflora var. collina Mary L. Bowerman 1933-4-9 1836 Contra Costa w fork Donner Canyon Mount Diablo (Mount Diablo) 243 Comment
  JEPS21079  Collinsia sparsiflora var. collina Joe Zaerr 1958-4-12 71 Contra Costa Along Marsh Creek, Morgan Territory Road (NE slopes of Mt. Diablo) 243 Comment
  UC26651  Collinsia sparsiflora var. sparsiflora Harley P. Chandler 1901-3-21 852 A Contra Costa Martinez Comment
  JEPS22934  Collinsia tinctoria Volney Rattan Jun 1886 Contra Costa Mt. Diablo Comment
  UC2028312  Collinsia tinctoria Barbara Ertter, Susan D'Alcamo 1998-6-12 16164 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit. Comment
  UC691624  Collinsia tinctoria Mary L. Bowerman 1935-6-1 3117 Contra Costa summit Mount Diablo Mount Diablo, summit (towards Devils Pulpit) 1158 Comment
  UC908741  Collomia heterophylla Herbert L. Mason 1928-4-15 4361 Contra Costa woods along trail Moraga Ridge Comment
  JEPS75520  Conium maculatum P. F. Yorks 1974-5-19 159 A Contra Costa 1.4 km s of Bear Creek Road (n of Briones Reservoir, on Hampton Road in Hampton Road Natural Preserve); Hampton Road Natural Preserve 180 Comment
  JEPS75521  Conium maculatum P. F. Yorks 1974-5-19 159 B Contra Costa 1.4 km s of Bear Creek Road (n of Briones Reservoir, on Hampton Road in Hampton Road Natural Preserve); Hampton Road Natural Preserve 180 Comment
  HSC33256  Conyza canadensis A. M. Montalvo, J. D. Ackerman 1974-12-1 435 Contra Costa Walnut Creek, Olympic Dr. between Tice Valley Rd. and Pleasant Hill Rd. Comment
  UC2028964  Conyza floribunda Barbara Ertter 2003-2-8 18091 Contra Costa Richmond Field Station (UC-Berkeley), interior open space next to Egret Drive. Comment
  UC1050401  Coprosma areolata N. Floy Bracelin 1941-9-21 1646 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC691741  Cordylanthus nidularius J. T. Howell 1942-7-19 17044 Contra Costa NE (?) of Deer Flat, Mt. Diablo, Contra Costa Co. Comment
  SEINET12269039  Cordylanthus pilosus M. T. Doutt 1930-1 88 Contra Costa Marsh Creek Comment
  JEPS6802  Cordylanthus pilosus subsp. pilosus Mary L. Bowerman 1931-9-20 1045 Contra Costa near Rock City (Rock City Canyon, N side); Mount Diablo Comment
  UC2028021  Cordylanthus pilosus subsp. pilosus Barbara Ertter 1997-9-14 15815 Contra Costa southwest side of Mount Diablo, Wall Point Road east of crest of ridge. Comment
  UC692511  Cornus glabrata Mary L. Bowerman 1931-5-28 904 Contra Costa Pine Canyon Mt. Diablo (gully at e. end of Castle Rock Farm); , Pine Canyon Comment
  JEPS111819  Cornus sericea D. G. Kelch 2003-8-13 03 .132 Contra Costa Pinole Creek 68 Comment
  UC407389  Coronopus didymus Ira L. Wiggins 1930-4-18 4595 Contra Costa e end of Jersey Island, Fallow cornfield Jersey Island Comment
  CAS-BOT-BC169514  Corylus cornuta subsp. californica H. E. McMinn 1925-1-1 s.n. Contra Costa Lead of San Leandro Creek Comment
  UCSB29429  Corylus cornuta subsp. californica Havlik, Neil 1969-7-3 Contra Costa Grizzly Pk., Berkeley Hills 457 Comment
  UC2032849  Cotula coronopifolia Doran, Andrew Scott 2012-3-20 720 Contra Costa Northeast part of Brooks Island, on trail to beach along spit. Comment
  PASA938  Cotula coronopifolia Annetta Carter 1929-3-31 Contra Costa Near Clayton. Hills north of Mt. Diablo Comment
  RSA721594  Crassula aquatica Mary L. Bowerman 1975-9-14 s.n. Contra Costa Mount Diablo. Comment
  JEPS111820  Crassula connata A. G. Murdock 2004-2-12 209 Contra Costa Martinez - Franklin Hills 95 Comment
  UC2027788  Crassula connata Barbara Ertter 1991-5-5 9787 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, vernally moist flat at edge of Black Diamond Trail ca. 1/4 mi E of pond Comment
  UC692556  Crassula connata var. subsimplex Mary L. Bowerman 1931-3-21 586 Contra Costa Sycamore Canyon Mt. Diablo, Sycamore Canyon 335 Comment
  UC1795658  Crassula tillaea Barbara Ertter, Gary Schoolcraft 1996-4-7 14578 Contra Costa Molate Beach Park on San Francisco Bay north of San Rafael Bridge; bare edge of lawn-covered bluff. Comment
  SD241801  Crassula tillaea Barbara Ertter, Gary Schoolcraft 1996-4-7 14578 Contra Costa Molate Beach Park on San Francisco Bay north of San Rafael Bridge; bare edge of lawn-covered bluff. Comment
  JEPS31075  Crocanthemum scoparium var. vulgare J. B. Davy 1895-1 Contra Costa Moraga Pass Oakland Hills 182 Comment
  JEPS79011  Croton californicus Edward Lee with Annetta Carter 1935-10-17 1626 Contra Costa Antioch; dunes Comment
  UC765095  Croton californicus R. F. Hoover 1937-5-14 2114 Contra Costa Antioch sand-dunes Comment
  CDA15277  Croton setiger G. F. Hrusa, D. Crowe, R. York 1998-7-17 14714 Contra Costa Sacramento Delta; E end of Dow Chemical property. Comment
  CHSC23346  Croton setiger Willis Ball 1975-6-1 531 Contra Costa Contra Loma Regional Park. In area #7 on w side of road ca. 10 yds n of main entrance to park. 60 Comment
  CDA15287  Crypsis schoenoides G. F. Hrusa, D. Crowe, R. York 1998-7-17 14726 Contra Costa Sacramento Delta; Dense band outside of lowest part of now dry vernally wet depression within highly disturbed annual grasslands adjacent to on E side of Antioch-Pittsburg Hwy at E end of Dow Chemical property. W/out standing water at this time. Annual. Comment
  JEPS100022  Crypsis schoenoides S. O'Neil 2003-7-27 SEO 42 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  RSA721593  Crypsis schoenoides Mary L. Bowerman 1975-9-14 s.n. Contra Costa Mount Diablo. Hidden Pond Comment
  JEPS67586  Cryptantha flaccida W. L. Jepson May 22 1891-May 23 1891 21115 Contra Costa Mt. Diablo Comment
  UC691395  Cryptantha flaccida Mary L. Bowerman 1930-6-7 269 Contra Costa Mount Diablo summit Mount Diablo Comment
  UC691402  Cryptantha flaccida Mary L. Bowerman 1933-5-2 1955 Contra Costa below Pioneer Camp; Mount Diablo 762 Comment
  UC691341  Cryptantha microstachys Mary L. Bowerman 1932-4-27 1388 Contra Costa w of Riggs Canyon (canyon, s-face of Oyster Ridge); Mount Diablo, Oyster Ridge 335 Comment
  UC691391  Cryptantha nevadensis var. rigida Mary L. Bowerman 1942-5-24 3841 Contra Costa Mount Diablo; Jim White Trail, W slope of Deer Ridge 853 Comment
  UC1795800  Cryptantha torreyana Barbara Ertter, Mary L. Bowerman 1994-6-19 12846 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit Parking Lot, opening on North side, 1127 Comment
  CDA33660  Cuscuta japonica Yost/Fonseca 2008-8-7 PDR# 14544449 Contra Costa Richmond; 101 Marcus Ave. 0 Comment
  CDA31062  Cuscuta subinclusa D. G. Kelch 2006-8-11 6 .374 Contra Costa Carquinez Strait.; Top of Edward s Canyon. Crockett. Comment
  UC691857  Cuscuta subinclusa Mary L. Bowerman 1933-9-3 2418 Contra Costa s of Meridian-North Peak saddle; Mount Diablo Comment
  UC692432  Cynodon dactylon Mary L. Bowerman 1936-8-17 3526 Contra Costa Sulphur Spring in Pine Canyon Mount Diablo; , Sulphur Spring in Pine Canyon 137 Comment
  UC615167  Cynoglossum grande Beryl O. Schreiber 1932-2-27 27 Contra Costa Redwood Canyon Comment
  UC2028466  Cynosurus echinatus Barbara Ertter 1997-8-24 15769 Contra Costa Southwest side of Mount Diablo, Rock City area Comment
  SEINET10861237  Cynosurus echinatus M. Bowerman 1975-6-7 Bowerman s.n. Contra Costa Mount Diablo. Big Spring. Shady. Bay, Canyon Oak. But hard packed, semi open where people and horses come to watering trough (bathtub). Comment
  UCD161869  Cyperus James A. Neilson Jr. 1972-10-22 s.n. Contra Costa Contra Costa County. Lower Pine Creek. (Exact location unknown. Coordinates estimated by label maker.) Comment
  SD175778  Cyperus difformis D. G. Kelch 2006-9-15 06 474 Contra Costa Shell Ave., Martinez, between Pine St. and Harborview Dr. 56 Comment
  CAS-BOT-BC114619  Cyperus eragrostis Walter Knight; Joanne Dean 1978-8-14 3150 Contra Costa Browns Island Comment
  JEPS111890  Cyperus eragrostis D. G. Kelch 2004-5-7 04 .192 Contra Costa Ca ada del Cierbo Ca ada del Cierbo 40 Comment
  UC1606358  Cyperus eragrostis Barbara Ertter, Brad Olson 1991-9-28 10848 Contra Costa s. end San Pablo Reservoir (between Orinda and El Sobrante) 97 Comment
  UC665689  Cyperus eragrostis Thomas Morley 1940-12-3 90 Contra Costa banks at upper end San Leandro Lake (near mouth of Redwood Creek) 129 Comment
  UC2028462  Cyperus eragrostis Barbara Ertter with Chris Thayer 1996-10-25 15392 Contra Costa Southwest flank of Mount Diablo, lowers South Gate Road just inside park boundary Comment
  CAS-BOT-BC114071  Cyperus squarrosus Walter Knight; Frank Almeda; Joanne Dean; B. Doyle 1978-10-11 3324 Contra Costa Browns Island, Botany Cove. Comment
  UC1607705  Cystopteris fragilis Barbara Ertter, Lynne Hosley 1993-4-17 11514 Contra Costa ca. 10 air mi n Livermore (on hills in lee of Mt Diablo, along Coyote Trail); , Morgan Territory Comment
  CDA35758  Cytisus striatus V. Guise 2011-5-13 PDR# 1641027 Contra Costa Richmond; Wildcat Canyon Regional Park, 2755 McBryde Ave. 0 Comment
  RSA0027405  Datura stramonium Barbara Ertter 1999-8-21 16790 Contra Costa Former reservoir upstream from mouth of Mitchell Canyon. Comment
  JEPS102890  Datura wrightii Barbara Ertter with Tony Morosco 1998-10-18 16435 Contra Costa Lime Ridge Recreaton Area, NE corner Mount Diablo 182 Comment
  UC1606344  Datura wrightii Barbara Ertter, B. Olson, D. Lake, L. Hosley and A. Youngson 1991-10-20 10857 Contra Costa just w Antioch marina (Dow Wetlands Preserve, plowed fields at sw end); Dow Wetlands Preserve Comment
  CAS-BOT-BC287375  Deinandra corymbosa H. M. Hall 1914-8-23 9862 Contra Costa Giant 22 Comment
  UCD35140  Deinandra corymbosa Beecher Crampton 1950-6-20 596 Contra Costa Richmond Comment
  CAS-BOT-BC294016  Deinandra kelloggii Alice Eastwood 1921-4-18 10300 Contra Costa Antioch Comment
  SEINET3147522  Deinandra kelloggii K. Brandegee 1907-5-5 19 Contra Costa Near Antioch Comment
  UC126849  Deinandra kelloggii Mrs. K. Brandegee 1907-5-5 19 Contra Costa near Antioch Comment
  UC480907  Deinandra kelloggii Katharine Brandegee 1907-5-1 Contra Costa near Antioch; Judsonville Comment
  UC1795685  Deinandra kelloggii Barbara Ertter, Chris Thayer 1994-5-19 12783 Contra Costa Roadside opposite east end of Antioch Dunes, south side of Wilbur Avenue north of railroad tracks east of Antioch Comment
  UC523552  Deinandra lobbii David D. Keck 1933-11-2 2615 Contra Costa 1 mi e Nichols (northern Contra Costa County) Comment
  CAS-BOT-BC291809  Deinandra lobbii David D. Keck 1933-11-2 2615 Contra Costa 1 mi. E. of Nichols, N. Contra Costa County Comment
  JEPS105695  Deinandra lobbii David Gowen 2004-5-29 101 Contra Costa Lime Ridge Open Space. Summit area just south of the antenna facility. Comment
  UCD95636  Delphinium californicum P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. Comment
  JEPS6242  Delphinium californicum subsp. interius W. L. Jepson 1921-11-19 9523 Contra Costa s slope Mount Diablo (chamise ridge) Comment
  CAS-BOT-BC8749  Delphinium hansenii H. Lewis; C. Epling 1947-5-4 703 Contra Costa Marsh Creek Road, 5.8 mi. east of Curry Creek Park Road Comment
  LA207419  Delphinium hansenii H. Lewis; Carl Epling 1947-5-4 703 Contra Costa Marsh Creek Road, 5.8 mi. E of Creek Park Rd Comment
  UC9187  Delphinium hesperium G. Survey 1862-5-29 1185 Contra Costa dry hill Mount Diablo, Marsh ranch Comment
Read comments
Jan 20 2008
  CAS-BOT-BC10014  Delphinium hesperium subsp. pallescens A. A. Heller 1908-4-17 8906 Contra Costa Hills, three miles south of Antioch,. 18 Comment
  POM203038  Delphinium hesperium subsp. pallescens J. T. Howell 1934-4-8 11824 Contra Costa South of Antioch Comment
  UC9183  Delphinium hesperium subsp. pallescens W. H. Brewer 1862-5-29 1185 Contra Costa near Camp 71; Marsh's Ranch Comment
  JEPS112062  Delphinium nudicaule A. G. Murdock 2004-4-30 243 Contra Costa Vaca Canyon 165 Comment
  UC136343  Delphinium parryi subsp. parryi M. K. Curran May 1886 Contra Costa near Antioch Comment
  UC1818933  Delphinium patens Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14595 Contra Costa Sycamore Spring Trail off Prospectors Gap Rd., east side Mt. Diablo. 640 Comment
  CAS-BOT-BC116455  Delphinium patens subsp. patens H. L. Mason 1925-3-10 1301 Contra Costa Mount Diablo Comment
  CAS-BOT-BC116457  Delphinium patens subsp. patens Alice Eastwood 1915-5-30 4497 Contra Costa Mt. Diablo Comment
  UC9157  Delphinium patens subsp. patens Harley P. Chandler 1901-4-5 974 Contra Costa Mount Diablo Comment
  CAS-BOT-BC116453  Delphinium patens subsp. patens H. L. Mason 1929-3-29 5136 Contra Costa Marsh Creek Road two miles above Clayton Comment
  UC1084394  Delphinium patens subsp. patens G. Thomas Robbins 1937-4-25 141 Contra Costa hillside e La Vista Comment
  OBI10610  Delphinium recurvatum Robert F. Hoover 1967-4-28 10511 Contra Costa Byron Hot Springs Comment
  UC199142  Delphinium variegatum Chesnut and Drew 1887-4-16 Contra Costa Clayton Comment
  CAS-BOT-BC192674  Deschampsia danthonioides Bolander 6072 Contra Costa Unspecified Comment
  CAS-BOT-BC43126  Descurainia pinnata subsp. brachycarpa Volney Rattan 1879-1-1 s.n. Contra Costa Antioch. Comment
  JEPS46437  Dicentra chrysantha W. L. Jepson 1921-11-19 9518 Contra Costa Mt. Diablo Comment
  UC692101  Dicentra chrysantha Mary L. Bowerman 1932-9-3 1529 Contra Costa Muir Area; Mount Diablo Comment
  UC618200  Dichelostemma capitatum R. F. Hoover 1938-2-21 2756 Contra Costa Point Richmond Comment
  CAS-BOT-BC500089  Dichelostemma capitatum R. F. Hoover 1938-2-21 2756 Contra Costa Point Richmond Comment
  CAS-BOT-BC150330  Diplacus aurantiacus Alice Eastwood 1921-4-18 10287 Contra Costa Antioch Comment
  CAS-BOT-BC121840  Dirca occidentalis Howard E. McMinn 1925-3-30 1402 Contra Costa Near summit Thornhill Road and Skyline Blvd. Comment
  UC1084426  Dirca occidentalis G. Thomas Robbins 1940-3-10 274 Contra Costa n slope Grizzly Peak; Berkeley Hills Comment
  UC581346  Dirca occidentalis Helen K. Sharsmith 1932-9-18 50 Contra Costa head of Wildcat Canyon Berkeley Hills (streamside) Comment
  RSA603002  Dirca occidentalis Joseph A. Ewan 1934-3-10 8643 Contra Costa 2 miles below Orinda Road bridge, Wildcat Canyon Comment
  JEPS112508  Disporum hookeri A. G. Murdock 2003-6-2 83 Contra Costa Franklin Canyon - McHarry Ranch Rd. 137 Comment
  UC792336  Disporum hookeri J. A. Rattenbury 1948-4-13 111 Contra Costa on s side of highway above creek 1/2 mi e of Oakland Tunnel 213 Comment
  POM300632  Disporum hookeri var. hookeri Mary L. Bowerman 1931-3-22 606 Contra Costa Alamo Canyon, east fork. Comment
  JEPS102900  Distichlis spicata Barbara Ertter, Chris Thayer 1996-10-25 15369 Contra Costa North Gate Road Mount Diablo 121 Comment
  CHSC99232  Dittrichia graveolens John Dittes 2006-10-26 1412 Contra Costa San Joaquin Valley (foothills near nw edge); ca. 2.0 air miles south of Marsh Creek Gauging Station, 1.6 air miles south of Marsh Creek Reservoir Gauging Station, 1.6 air miles southwest of Intersection of Camino Diablo and Vasco Road; Contra Costa Water District's Los Vaqueros Watershed Mitigation Project Area. 67 Comment
Read comments
Aug 22 2009
  RSA739726  Dittrichia graveolens John Dittes 2006-10-26 1412 Contra Costa San Joaquin Valley (foothills near NW edge) 2 air mile S of Marsh Creek Reservoir Gauging Station, 1.6 air mile SW of intersection of Camino Diablo and Vasco Road, Contra Costa Water District's Los Vaqueros Watershed Mitigation. 67 Comment
  UC1039536  Dodecatheon clevelandii subsp. patulum Herbert L. Mason 1929-3-15 5044 Contra Costa Nortonville Comment
  UC1123273  Dodecatheon clevelandii subsp. patulum H. S. Yates 1936-3-14 5356 Contra Costa 1/2 mi n of mouth of Perkins Canyon; Mt. Diablo Quadrangle Comment
  UC22416  Dodecatheon hendersonii J. Burtt Davy 1896-2-29 1266 Contra Costa Mitchell Canyon Mt. Diablo, Mitchell Canyon Comment
  RSA436115  Downingia bacigalupii Thekla Mohr 1917-06 3163 Contra Costa Mt. Diablo. Comment
Read comments
Jan 8 2013
  SEINET8733889 Image available Downingia elegans H. S. Reed 1940-1 356 a Contra Costa six miles south of Antioch 15 Comment
  JEPS65183  Downingia insignis L. R. Heckard 1971-4-15 2484 Contra Costa s of Byron (at intersection of Holey Road) Comment
  UC1188740  Downingia insignis John H. Weiler 1959-4-11 5954 Contra Costa 3 mi w Byron (on the w side of the road) Comment
  UC1188741  Downingia insignis John H. Weiler 1959-4-11 5950 Contra Costa 1.5 mi s Byron (on the e side of the road) Comment
  UC1189259  Downingia insignis John R. Swanson 1958-4-15 236 Contra Costa 3 mi s Byron (at junction of Holey road) Comment
  UC765619  Downingia insignis R. F. Hoover 1937-5-14 2117 Contra Costa Bryon Hot Springs Comment
  UC766347  Downingia insignis R. F. Hoover 1941-4-12 4839 Contra Costa 1 mi n Lone Tree Valley Comment
  JEPS14440  Downingia pulchella W. L. Jepson May 23 1891-May 24 1891 21212 Contra Costa Mt. Diablo Comment
  UCD55128  Downingia pulchella Beecher Crampton 1950-4-22 535 Contra Costa Contra Costa County, Concord Valley, between Highway 4 and Buchanan Field (airport). 15 Comment
  JEPS128775  Draba verna Kevin Hintsa 1995-3-4 Contra Costa Deer Flat Road ca 1 mi NE of Juniper Campground, Mount Diablo State Park. Comment
  UC2028037  Draba verna Barbara Ertter 1998-3-7 15933 Contra Costa Rock City picnic area on southwest side of Mount Diablo. Comment
  SEINET5718195  Drimys winteri Shirley C. Tucker 1955-1 6088 B Contra Costa University of California Botanic Garden, Berkeley.; UC Botanic Garden Comment
  CDA42719  Dryopteris arguta A. G. Murdock 2004-2-12 205 Contra Costa Franklin Canyon - McHarry Ranch Road. Comment
  JEPS111938  Dryopteris arguta D. G. Kelch 2004-9-2 04 .340 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Martinez (Ozol) CA East of Ozol 25 Comment
  JEPS111939  Dryopteris arguta A. G. Murdock 2004-2-12 205 Contra Costa Franklin Canyon - McHarry Ranch Rd. 126 Comment
  UC692560  Dudleya cymosa subsp. paniculata Mary L. Bowerman 1931-6-17 925 Contra Costa e side Riggs Canyon Comment
  UC1795646  Dudleya farinosa Barbara Ertter, Brad Olson 1994-5-7 12763 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC2029166  Echinochloa crus-galli Barbara Ertter 2000-7-16 17395 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  UCD37369  Echinochloa crus-pavonis Beecher Crampton 1959-9-3 5451 Contra Costa Contra Costa County, 2 miles north of city of Orinda, Bear Creek, East Bay Municipal Utilities District Project. Comment
  CAS-BOT-BC291118  Eclipta prostrata Walter Knight; Irja Knight 1980-8-26 3770 Contra Costa Hercules Comment
  CAS-BOT-BC211459  Elaeagnus angustifolia Dr. E. C. Van Dyke 1941-10-4 s.n. Contra Costa River bank east of Antioch Comment
  UC1606335  Elatine brachysperma Barbara Ertter, Brad Olson 1991-9-28 10829 a Contra Costa betw Orinda and El Sobrante San Pablo Reservior Comment
  UC692607  Elatine californica Mary L. Bowerman 1935-7-22 3181 Contra Costa s side Meridian Peak (Chase Pond, by old Government trail); Mount Diablo 548 Comment
  JEPS111900  Eleocharis macrostachya D. G. Kelch 2005-3-24 05 .62 Contra Costa Point Pinole Southern Pt. Pinole 3 Comment
  CAS-BOT-BC112798  Eleocharis macrostachya Miss Mary Leolin Bowerman 1938-5-28 3645 Contra Costa Maple Spring, on upper margin especially in the NW corner. Comment
  POM300639  Eleocharis palustris Mary L. Bowerman 1935-6-21 3152 Contra Costa Mount Diablo: South of Turtle Rock, pool east of main pond Comment
  SEINET3558852 Image available Ellisia membranacea Lewis S. Rose 1933-3-10 33011 Contra Costa Brentwood. Comment
  UC756639  Elymus G. L. Stebbins Jr. 1946-6-9 3656 Contra Costa 2 mi e El Cerrito (near Mira Vista Country Club) Comment
  RSA264278  Elymus X gouldii A. A. Beetle 1941-6-24 1751 Contra Costa Pt. Richmond on San Francisco Bay Comment
  UC2070610  Elymus caput-medusae Barbara Ertter 1999-1-17 16477 Contra Costa Morgan Territory Regional Preserve SE of Mount Diablo, north end Coyote Ridge Trail. Comment
  SD234023  Elymus condensatus Virginia Pinkus Ryder 1975-10-12 659 Contra Costa Walnut Creek. Beside Walnut Creek at Walnut Ave. bridge in disturbed area. Comment
  POM205600  Elymus glaucus Jos Burtt Davy 1897-04 1762 Contra Costa Point Isabel. Comment
  UC1789176  Elymus glaucus Barbara Ertter 2002-6-16 17953 Contra Costa Richmond Field Station, southwest end of overgrown meadow near boundary with park, edge of thick growth facing fence. Comment
  UC756637  Elymus glaucus G. L. Stebbins Jr. 1946-6-9 3653 Contra Costa 2 mi e El Cerrito (near Mira VistaCountry Club) Comment
  POM300594  Elymus glaucus Mary L. Bowerman 1935-5-16 3009 Contra Costa Behind Gabriel-Hinks' (east side of North Peak) 290 Comment
  CAS-BOT-BC203432  Elymus glaucus subsp. glaucus Mary L. Bowerman 1935-5-16 3009 Contra Costa Mount Diablo. Behind Gabriel-Hinks' (east side of North Peak) 289 Comment
  CAS-BOT-BC203431  Elymus glaucus subsp. glaucus Mary L. Bowerman 1934-4-21 2542 Contra Costa Mount Diablo. Beside Pioneer Camp road east of Pioneer Camp Comment
  UC691171  Elymus multisetus Mary L. Bowerman 1938-6-24 3690 Contra Costa Canyon Nook Mount Diablo (e side of creek) 670 Comment
  SEINET242043  Elymus trachycaulus Barbara Ertter 2000-6-16 17953 Contra Costa Richmond Field Station at south end of 42nd St., Richmond, west end of grassland facing boundry fence with state park, edge of thick growth. Comment
  UC1618362  Elytrigia intermedia subsp. intermedia Barbara Ertter with Lynne Hosley and Sid Cowles 1992-6-7 11084 Contra Costa along raod to quarry e of Round Top (Sibley Volcanic Regional Preserve in Oakland Hills); Oakland Hills, Sibley Volcanic Regional Preserve Comment
  CDA2059  Elytrigia repens Margaret Bellue 1948-1 Contra Costa Moraga Del Rey. (Vicinity S.F.) Moraga . 0 Comment
  JEPS108314  Emmenanthe penduliflora David Gowen 2005-5-24 389 Contra Costa Mt. Diablo. Near summit of knoll west of Mt. Zion. Comment
  JEPS1582  Emmenanthe penduliflora W. L. Jepson 1921-5-22 9205 Contra Costa .66 way to summit Mt. Diablo Comment
  JEPS1599  Emmenanthe penduliflora Mary L. Bowerman 1933-4-26 1916 Contra Costa North Peak ridge east-southeast of the peak, south face, Mount Diablo 609 Comment
  RSA128915  Emmenanthe penduliflora Peter H. Raven 1950-7-5 2480 Contra Costa A flat on south side of Mt. Diablo. 1067 Comment
  UCD150893  Epilobium brachycarpum James A. Neilson Jr.; Samuel A Bamberg 1975-10-22 3497 Contra Costa Walnut Creek drainage at State Highway 4. Elevation estimated using Google Earth by label maker. 1 Comment
  UC764884  Epilobium campestre R. F. Hoover 1937-5-14 2119 Contra Costa Byron Hot springs Comment
Read comments
Dec 18 2008
  UC1818970  Epilobium campestre Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14531 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. dried roadside pond, clay. Comment
  UC1949052  Epilobium campestre Barbara Ertter with Brad Olson 1991-9-28 10833 Contra Costa San Pablo Resrvoir between Orinda and El Sobrante Comment
  POM32526  Epilobium canum subsp. canum A. D. E. Elmer 1903-07 4620 Contra Costa Mount Diablo Comment
  UC1745971  Epilobium canum subsp. canum Annetta M. Carter 1933-11-25 418 Contra Costa Mount Diablo Comment
  UC2042945  Epilobium canum subsp. canum Barbara Ertter with Laura Fujii 1989-10-29 8895 Contra Costa Las Trampas Regional Wilderness W of Danville. Comment
  RSA128599  Epilobium ciliatum subsp. ciliatum Peter H. Raven 1950-7-5 2490 Contra Costa On the N road, Mt Diablo 396 Comment
  UC635735  Epilobium cleistogamum M. K. Curran May 1886 Contra Costa Antioch Comment
  UC692449  Epilobium densiflorum Mary L. Bowerman 1930-6-28 390 Contra Costa Lower Silver Spring Mount Diablo (marshy area) Comment
  UC1818895  Epilobium minutum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14065 Contra Costa Three-Springs Trail on NE side of Mt. Diablo SE of Clayton, small serpentine patch at road junction Comment
  UC4498  Epipactis gigantea F. T. Bioletti 1894-5-13 Contra Costa Mt. Diablo Comment
  UC1005902  Epiphyllum N. Floy Bracelin 1943-5-16 2513 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  UC1789099  Equisetum arvense Barbara Ertter 2005-8-18 18637 Contra Costa San Pablo Reservoir in East Bay Hills, east of San Pablo Dam Road between Richmond and Orinda (EBMUD water storage from Mokelumne River watershed); mudflats left by receding reservoir (being drained for seismic work on dam). Comment
  UC692076  Equisetum hyemale subsp. affine Mary L. Bowerman 1935-3-16 2744 Contra Costa e fork Arroyo del Cerro (10 ft below spring); Mt.Diablo 289 Comment
  CDA42475  Equisetum telmateia var. braunii D. G. Kelch 2004-7-9 04 .292B Contra Costa Carquinez Strait; Crockett; Edwards Creek, immediately below high school. Comment
  UCD63093  Eragrostis curvula Beecher Crampton 1965-9-29 7526 Contra Costa 5 miles south of Brentwood Vasco Road and Camino Vaqueros. Comment
  UC2028469  Eragrostis mexicana subsp. virescens Barbara Ertter 1997-8-24 15777 Contra Costa Mount Diablo, Summit Road just above Junction Station Comment
  UC908868  Eriastrum pluriflorum Herbert L. Mason 1933-6-10 7252 Contra Costa Brentwood Comment
  UC1118629  Ericameria arborescens R. W. Lundh 1932-8-29 153 Contra Costa 2/3 mi n of Eagle Point; Mt. Diablo Quadrangle 457 Comment
  UC2028020  Ericameria arborescens Barbara Ertter 1997-9-14 15816 Contra Costa Southwest side of Mount Diablo, Wall Point Road on open sandstone ridge northwest of Wall Point. Comment
  UC2029062  Ericameria arborescens Barbara Ertter 2000-7-29 17449 Contra Costa Donner Canyon Road below upper junction of Hetherington Trail, north side of Mount Diablo Comment
  CAS-BOT-BC287530  Ericameria linearifolia W. W. Carruth 1902-4-29 s.n. Contra Costa Mt Diablo Comment
  JEPS31312  Ericameria linearifolia W. L. Jepson 1922-5-23 9719 Contra Costa summit Mt. Diablo Comment
  POM359374  Ericameria linearifolia H. E. McMinn 1922-6-2 96 Contra Costa Near summit of Mt. Diablo Comment
  UC1614256  Ericameria linearifolia Charles M. Belshaw 1935-6-10 697 Contra Costa Morgan Territory Rd. e. side of Mt. Diablo Comment
  UC36556  Ericameria linearifolia Harley P. Chandler 1901-4-5 971 Contra Costa Mt. Diablo Comment
  UC691863  Ericameria linearifolia Mary L. Bowerman 1930-6-18 351 Contra Costa Meridian Peak summit Mount Diablo, Meridian Peak (open rocky slope on e side) Comment
  UC691859  Erigeron foliosus var. franciscensis Mary L. Bowerman 1932-9-5 1550 Contra Costa e of the meridian Inner Black Hills; Mount Diablo, Inner Black Hills Comment
  UC1818984  Erigeron foliosus var. franciscensis Barbara Ertter 1994-6-26 12874 Contra Costa South of Point Molate Beach Park in west Richmond north of San Rafael Bridge, perennial grassland on bluff above beach between park and Point Castro. Comment
  UC723893  Erigeron petrophilus var. petrophilus Joseph Andorfer Ewan 1936-8-5 9735 Contra Costa Wildcat Creek Comment
Read comments
Jul 1 2007
  UC691786  Erigeron petrophilus var. petrophilus Mary L. Bowerman 1930-10-19 489 Contra Costa at Garden-of-the-Gods; Mount Diablo, Fossil (Rock City) Ridge Comment
  UC697208  Erigeron philadelphicus var. philadelphicus Mary L. Bowerman 1935-5-16 2998 Contra Costa Russelman Park road at Gregory Ranch junction; Mount Diablo 289 Comment
  UC87849  Erigeron philadelphicus var. philadelphicus T. S. Brandegee 1892-5-1 Contra Costa Antioch Comment
  UC24044  Eriodictyon californicum W. H. Brewer 1862-5-22 1133 Contra Costa ne Monte Diablo; ne of Monte Diablo Comment
  POM300599  Eriogonum Mary L. Bowerman 1932-8-27 1524 Contra Costa Mount Diablo. South of Turtle Rock: Grassy slope; also on Turtle Rock. Comment
  POM165547  Eriogonum angulosum H. M. Hall 1916-8-17 10276 Contra Costa Deer Valley 183 Comment
  JEPS56891  Eriogonum gracile W. L. Jepson 1898-10-18 Contra Costa Deer Flat Mt. Diablo Comment
  JEPS99584  Eriogonum gracile Mary Bowerman 1994-6-19 Contra Costa Mount Diablo, main summit road just below lower parking lot. Comment
  UCR263530  Eriogonum gracile Barbara Ertter, Tony Morosco 1996-7-27 15040 Contra Costa north side of Mount Diablo south of Clayton, where Cardinet Oaks Road crosses Donner Creek 335 Comment
  UC1980601  Eriogonum gracile James L. Reveal 1974-8-6 3772 Contra Costa Summit of Mt. Diablo, near lower parking lot west of summit. Comment
  UC692018  Eriogonum gracile var. gracile Mary L. Bowerman 1932-11-11 1639 Contra Costa Little below Moses Rock Spring (ridge leading up from Buckle Point (on west road)); Mount Diablo Comment
  UC692111  Eriogonum luteolum var. luteolum Mary L. Bowerman 1932-10-22 1637 Contra Costa road to Quicksilver Mine (flats at base of North Peak); Mount Diablo, North Peak Comment
  CAS-BOT-BC259524  Eriogonum luteolum var. luteolum Janet Haden 1988-10-10 s.n. Contra Costa Mt. Zion quarry on a peripheral terrace. Near Clayton Comment
  SEINET8349867  Eriogonum nudum Barbara Ertter 1997-8-18 15766 Contra Costa Antioche Dunes (USFWS National Wildlife Refuge) on San Joaquin River east of Antioch, southwest corner of refuge north of railroad tracks in former vineyard. Comment
  UC692045  Eriogonum nudum var. auriculatum Mary L. Bowerman 1930-8-24 424 Contra Costa Mitchell Canyon, lower trail Mount Diablo Comment
  CAS-BOT-BC268910  Eriogonum nudum var. auriculatum W. H. Brewer 1861-9-25 841 Contra Costa Near Monte [Mount] Diablo, Mission San Jose Comment
  UC1926783 Image available Eriogonum nudum var. psychicola Barbara Ertter 1997-8-18 15766 Contra Costa Contra Costa County: Antioch Dunes on San Joaquin River east of Antioch. Comment
  SEINET10733565 Image available Eriogonum nudum var. psychicola Barbara J. Ertter 1997-8-18 Ertter 15766 Contra Costa Antioch Dunes (USFWS National Wildlife Refuge) on San Joaquin River east of Antioch, southwest corner of refuge north of railroad tracks in former vineyard, fine pale brown sand. Comment
  UC635005  Eriogonum nudum var. pubiflorum H. L. Mason 1929-9-21 5433 Contra Costa 3 mi above Clayton (Marsh Creek road) Comment
  JEPS102915  Eriogonum roseum Barbara Ertter with Tony Morosco 1998-10-18 16436 Contra Costa NE corner of Lime Ridge recreation Area Mount Diablo 182 Comment
  UC762690  Eriogonum roseum R. F. Hoover 1940-11-30 4699 Contra Costa 2 mi s Antioch Comment
  UC768654  Eriogonum roseum R. F. Hoover 1937-9-2 2712 Contra Costa 2 mi s Antioch Comment
  JEPS105713  Eriogonum roseum David Gowen 2004-8-26 156 Contra Costa Black Diamond Mines Regional Preserve; 3/8 mi from parking area on Frederickson Lane, on Old Homestead Loop, just SW of its junction with the Homestead Trail Comment
  POM300579  Eriogonum truncatum Mary L. Bowerman 1933-5-25 2198 Contra Costa Alamo Canyon; above Wilson's barn. Oyster Ridge, west end of south face. Comment
  CAS-BOT-BC267874  Eriogonum umbellatum var. bahiiforme John Thomas Howell 1942-5-24 16967 Contra Costa Eagle Peak, Mount Diablo Comment
  CAS-BOT-BC262351  Eriogonum vimineum Alice Eastwood 1915-5-30 s.n. Contra Costa Mt. Diablo Comment
  CAS-BOT-BC262352  Eriogonum vimineum John Thomas Howell 1955-8-24 30903 Contra Costa Near summit of South Peak, Mt. Diablo Comment
  CAS-BOT-BC298506  Eriophyllum confertiflorum L. Constance 1933-6-25 E 95 Contra Costa About halfway to the summit of Mount Diablo Comment
  UC691725  Eriophyllum confertiflorum var. confertiflorum Mary L. Bowerman 1933-5-3 1968 Contra Costa due s of summit Mount Diablo 822 Comment
  SEINET10761151  Eriophyllum jepsonii Barbara J. Ertter, Holly Forbes 1997-4-20 Ertter 15562 Contra Costa North base of Mount Diablo, Eagle Peak Trail on NE side of Eagle Ridge below Twin Peaks, mixed chaparral-brush with Ptelea et al. Comment
  JEPS34599  Eriophyllum lanatum var. achilleoides W. L. Jepson 1891-5-24 14563 Contra Costa Mt. Diablo Comment
  UC691687  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1933-5-3 1979 Contra Costa due s of summit Meridian peak; Mt. Diablo, Meridian Peak 731 Comment
  UC697147  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1938-6-14 3687 Contra Costa 0.3 mi below Muir Area Mt. Diablo 960 Comment
  CAS-BOT-BC300964  Eriophyllum lanatum var. achilleoides L. Constance 1933-6-25 E 100 Contra Costa N. slope near the summit of Mt. Diablo 1097 Comment
  CAS-BOT-BC300972  Eriophyllum lanatum var. achilleoides L. R. Abrams 1921-5-26 8003 Contra Costa Mt Diablo Comment
  JEPS34593  Eriophyllum lanatum var. achilleoides W. L. Jepson 1918-6-5 7609 Contra Costa on the n peak Mt. Diablo Comment
  LA203600  Eriophyllum lanatum var. achilleoides Lincoln Constance; 1933-6-25 E 94 Contra Costa Mount Diablo, near the southeastern base Comment
  JEPS107133  Eriophyllum staechadifolium Barbara Ertter, Brad Olson 1994-5-7 12759 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1428723  Eriophyllum staechadifolium W. J. Ferlatte with L. M. Moe 1970-4-27 1251 Contra Costa San Francisco Bay, Red Rock Island Comment
  JEPS100094  Erodium moschatum G. Smick 2003-4-1 GAS 104 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2032835  Erodium moschatum Doran, Andrew Scott 2012-3-20 705 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  UC1191950  Eryngium aristulatum var. aristulatum Peter Kamb, Francia Chisaki, and S. Galen Smith 1951-4-14 1954 Contra Costa 7 mi. n. Walnut Creek (e. of Hwy. 21, 0.2 mi. s. intersection w/ Hwy. 4) Comment
  UC692373  Eryngium aristulatum var. aristulatum Mary L. Bowerman 1935-5-22 3054 Contra Costa saddle w. Twin Peaks (just s. of crest, Mt. Diablo); Mt. Diablo 441 Comment
  POM300691  Eryngium aristulatum var. aristulatum Mary L. Bowerman 1935-5-22 3054 Contra Costa Saddle west of Twin Lakes, just south of the crest 442 Comment
  UC2062628  Eryngium armatum Barbara Ertter 2002-5-16 17864 Contra Costa Richmond Field Station (UC-Berkeley). Comment
  UC1190972  Eryngium vaseyi Lincoln Constance, Reino Alava and Rimo Bacigalupi 1958-6-6 3661 Contra Costa 3 mi. s.e. Byron; San Joaquin Valley 10 Comment
  UC1190973  Eryngium vaseyi Lincoln Constance, Reino Alava and Rimo Bacigalupi 1958-6-6 3661 Contra Costa 3 mi. s.e. Byron; San Joaquin Valley 10 Comment
  UC1190974  Eryngium vaseyi Lincoln Constance, Reino Alava and Rimo Bacigalupi 1958-6-6 3661 Contra Costa 3 mi. s.e. Byron; San Joaquin Valley 10 Comment
  SEINET9111554  Eryngium vaseyi var. castrense Lincoln Constance, Alava, Reino and Bacigalupi, Rimo 1958-6-6 3661 Contra Costa Open country 3 miles southeast of Byron, San Joaquin Valley 11 Comment
  UC1034739  Erysimum capitatum G. B. Rossbach 1955-3-20 571 Contra Costa steep upper s slope Mount Diablo 1005 Comment
  CAS-BOT-BC40757  Erysimum capitatum G. B. Rossbach; R. P. Rossbach 1938-6-5 859 Contra Costa Near summit Mount Diablo. Comment
  NY32659  Erysimum capitatum subsp. angustatum J. A. Ewan 1935-3-10 9142 Contra Costa Behind bluffs along Sacramento River at Antioch. Comment
  RSA102133  Erysimum capitatum var. angustatum G. B. Rossbach 1955-3-13 570 Contra Costa Along tidal estuary of San Joaquin River just E of Antioch 24 Comment
  RSA39907  Erysimum capitatum var. angustatum P. A. Munz 1947-10-8 12205 Contra Costa Antioch 8 Comment
  RSA0008585  Erysimum capitatum var. angustatum Glenn A. Gorelick 1967-4-4 s.n. Contra Costa 1.5 miles east of Antioch Comment
  CAS-BOT-BC55199  Erysimum repandum Ira L. Wiggins 1930-4-17 4574 Contra Costa Railway right of way 0.25 mile south of Byron. Comment
  CAS-BOT-BC402988  Eschscholzia californica James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  JEPS99964  Eschscholzia californica G. Smick 2003-4-8 GAS 133 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  SEINET11263885  Eschscholzia californica Barbara Ertter, Tony Morosco 1996-7-27 15039 Contra Costa Cardinet Oaks Road at crossing of Donner Creek.; 0 335 Comment
  UC10007  Eschscholzia californica J. Burtt Davy April, 1897 Contra Costa Point Isabel Comment
  UC692105  Eschscholzia californica Mary L. Bowerman 1933-5-3 1973 Contra Costa due s Meridian Peak summit (on hillside above flat); Mount Diablo Comment
  PASA450  Eschscholzia californica Annetta Carter 1929-3-31 Contra Costa Near Clayton. Hills north of Mt. Diablo Comment
  CAS-BOT-BC5937  Eschscholzia recta Mary Katherine (Mrs.) Brandegee 1889-5-1 s.n. Contra Costa Antioch Comment
  UC1789211  Eucalyptus globulus Barbara Ertter 2002-5-11 17840 Contra Costa lower Emmons Canyon just outside of Mount Diablo State Park boundary. Comment
  UC880659  Eucrypta chrysanthemifolia var. chrysanthemifolia Lewis S. Rose 1941-5-15 41232 Contra Costa w slope Mt. Diablo 396 Comment
  JEPS18166  Euphorbia oblongata Rimo Bacigalupi with G. T. Robbins 1956-5-11 5641 Contra Costa 0.25 mi nw (above) Glen Frazer Station (on Santa Fe Railway, in Franklin Canyon); Franklin Canyon 106 Comment
  UCR99454  Euphorbia oblongata L. C. Wheeler 1958-8-26 7446 Contra Costa c. 2 mi. SW of Martinez, 0.3 mi. NW of Glen Frazer on Santa Fe; apparently Franklin Canyon, 1.7 mi. west of Martinez at limit on California Route 4 Comment
  CDA18802  Euphorbia oblongata B. Case 2000-4-2 PDR 031733 Contra Costa San Pablo. 0 Comment
  CDA4846  Euphorbia oblongata Margaret Bellue, A. Seeley Jun 1955 Contra Costa Highway 4, near Concord. 0 Comment
  UC2028962  Euphorbia peplus Barbara Ertter 2003-2-8 18092 Contra Costa Richmond Field Station (UC-Berkeley), weedy edge of interior open space next to Egret Drive. Comment
  UC2027888  Euphorbia serpillifolia subsp. serpillifolia Barbara Ertter with Chris Thayer 1996-10-25 15359 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park. Comment
  JEPS111697  Eurybia radulina D. G. Kelch 2004-4-25 04 .116 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Hill Southwest of large cottonwood. West of Martinez at gated end of Scenic Dr 50 Comment
  UC1618412  Eurybia radulina Barbara Ertter with Dianne Lake 1991-8-18 10675 Contra Costa e. Crockett (above pilings n.e. of Bull Valley staging area, Carquinez Strait Regional Shoreline); Carquinez Strait Regional Shoreline Comment
  SEINET3449639  Euthamia occidentalis Dean G. Kelch, Andrew G. Murdock 2004-7-9 DGK 4 .309 Contra Costa West of Pacheco Slough, West of Pacheco Slough, Pacheco Hill Marsh 5 Comment
  UCD159505  Euthamia occidentalis D. S. Park 2010-9-11 253 Contra Costa Waterfront Rd. Growing in ditch along roadside. Disturbed. Wet. 5 Comment
  CDA37846  Fallopia japonica Fonseca/Niang 2012-7-16 PDR# 1641164 Contra Costa El Sobrante; Circle Dr. 0 Comment
  UC2028589  Festuca arundinacea Barbara Ertter with Mary Bowerman 1996-11-1 15399 Contra Costa North base of Mount Diablo, near Donner Canyon trailhead at end of Regency Drive Comment
  UC2028533  Festuca microstachys Barbara Ertter with Tony Morosco 1998-4-12 15989 Contra Costa Base of Mount Olympia on north side of Mount Diablo. Comment
  UC2028969  Festuca myuros Barbara Ertter 2003-2-8 18092 a Contra Costa Richmond Field Station (UC-Berkeley). Comment
  CAS-BOT-BC278927  Festuca rubra J. Burtt Davy 1897-4-1 s.n. Contra Costa Point Isabel Comment
  POM205843  Festuca rubra Jos Burtt Davy 1897-04 s.n. Contra Costa Point Isabel. Comment
  SEINET4343746 Image available Festuca rubra Barbara Ertter, Brad Olson 1994-5-7 12752 Contra Costa South end Pt Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay Comment
  SEINET10590890  Festuca rubra Barbara J. Ertter, B. Olson 1994-5-7 Ertter 12752 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Intact coastal prairies above bluff just south of park, between road and bay, with dense Festuca. Coastal form, tufted (a=on bluffs). Comment
  JEPS100135  Foeniculum vulgare A. Langston 2003-7-28 AL 79 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC62922  Frangula californica subsp. tomentella Alice Eastwood 1915-5-30 4449 Contra Costa Mt. Diablo. Comment
  CDA8373  Frankenia salina A. G. Murdock, D. G. Kelch 2005-3-24 319 Contra Costa Carquinez Strait; Point Pinole. Comment
  UC1795649  Fraxinus dipetala Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13081 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton, open oak woodland (Canyon live oak, blue oak, buckeye); north facing slope with local grove of Fraxinus, Aesculus, toyon. Comment
  UC692003  Fritillaria affinis Mary L. Bowerman 1931-3-8 562 Contra Costa Mount Diablo, near mouth of Mitchell Canyon Mitchell Canyon; Mount Diablo, Mitchell Canyon Comment
  UC672117  Fritillaria agrestis Herbert L. Mason 1929-3-15 5057 Contra Costa about 5 mi from Brentwood (Marsh Creek Road); Marsh Creek Road Comment
  UC13832  Fritillaria liliacea J. Burtt Davy 1900-3-24 6530 Contra Costa Stege; Western Middle California, Stege Comment
  JEPS113074  Fumaria capreolata Barbara Ertter 1999-3-21 16486 Contra Costa Miller Knox Regional Park near Point Richmond, edge of old excavation into rock (southeast of Richmond Ramblers building). Comment
  UCR160111  Fumaria capreolata M. I. Wibawa 2003-3-1 331 Contra Costa San Francisco Bay Region, along sidewalk on corner of Junction Ave. and Hagen Blvd., El Cerrito 44 Comment
  CDA3563  Fumaria capreolata Barbara Ertter 1999-3-21 16486 Contra Costa Miller Knox Regional Park, near Point Richmond (southeast of Richmond Ramblers building). 0 Comment
  CDA33841  Galium andrewsii subsp. gatense D. G. Kelch 2010-5-15 10 .119 Contra Costa Mt. Diablo. Trail from Juniper Camp to Deer Flat. 0 Comment
  CHSC21612  Galium aparine Willis Ball 1975-2-23 440 Contra Costa Contra Loma Regional Park. In area #2. On SE side of hill ca. 20 yds W of boat ramp at W side of lake. 45 Comment
  JEPS111526  Galium aparine D. G. Kelch 2005-5-5 05 .211 Contra Costa Point Pinole - Giant Marsh Giant Salt Marsh 3 Comment
  UC2027965  Galium californicum subsp. californicum Barbara Ertter 1997-8-24 15770 a Contra Costa South side of Mount Diablo, Curry Canyon Road from Curry Point. Comment
  JEPS112108  Galium murale D. G. Kelch 2004-3-12 04 .36 Contra Costa Pinole Valley Hillside and canyon above Wright Road. Off of Pinole Valley Road 220 Comment
  JEPS14519  Galium murale L. T. Dempster 1956-5-26 1004 Contra Costa hill above Overhill Ct.; Orinda Comment
  UC1618369  Galium murale Barbara Ertter, Chris Thayer 1993-5-7 11715 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District land Comment
  UC964759  Galium murale Herbert L. Mason 1944-3-17 Contra Costa Briones Hills Comment
  RSA0029676  Galium parisiense Barbara Ertter, Susan D'Alcamo 1998-6-12 16168 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit, steep rocky S-facing bowl. 1037 Comment
  JEPS112109  Galium porrigens var. porrigens D. G. Kelch 2004-5-2 04 .168 Contra Costa Crockett - Edwards Canyon 125 Comment
  UC697199  Gamochaeta ustulata Mary L. Bowerman 1942-6-1 3846 Contra Costa Lower Rock City Camp Mount Diablo Comment
  CHSC22852  Garrya elliptica Robert A. Schlising; Et al 1962-2-21 2080 Contra Costa Coast Ranges. Berkeley-Oakland Hills of westernmost part of county. Comment
  UC692505  Garrya elliptica Mary L. Bowerman 1933-3-11 1747 Contra Costa Fossil Ridge Mount Diablo (knoll s of 1778 point, of crest of hill) Comment
  CAS-BOT-BC200626  Garrya elliptica W. W. Carruth 1902-4-1 s.n. Contra Costa E. Oakland Hills Comment
  UC2028041  Garrya elliptica Barbara Ertter 1998-3-7 15928 Contra Costa Southwest side of Mount Diablo, west-most knoll on Fossil Ridge, at end of fire road. Comment
  UC876007  Garrya flavescens Lewis S. Rose 1941-3-22 41054 Contra Costa near summit Mt. Diablo 1188 Comment
  UCSC000542  Garrya fremontii R. W. Lundh 1932-8-26 145 Contra Costa 1.333 mi. W. of Mt. Diablo Mt. Diablo - Mt. Diablo 1097 Comment
  POM300683  Gastridium phleoides Mary L. Bowerman 1931-5-2 798 a Contra Costa Foot of Eagle Point ridge. Mount Diablo. Comment
  CAS-BOT-BC282611  Gastridium phleoides Mary L. Bowerman 1935-7-22 3191 Contra Costa Hidden Pond, Mount Diablo Comment
  CAS-BOT-BC282612  Gastridium phleoides Mary L. Bowerman 1935-7-22 3191 Contra Costa Hidden Pond, south side Meridian Peak, Mount Diablo Comment
  POM300684  Gastridium phleoides Mary L. Bowerman 1933-6-14 2272 Contra Costa Curry Cave Canyon: Ridge between two main forks. Mount Diablo. Comment
  CDA9420  Gastridium ventricosum D. G. Kelch 2004-5-3 4 .152 Contra Costa Carquinez Strait; Mt Wanda, Martinez. 0 Comment
  JEPS125933  Gazania linearis D. W. Taylor 2001-3-21 17615 Contra Costa Blackhawk subdivision; growing near base of PG&E transmission tower 16/64 Comment
  UCR265172  Genista monspessulana Barbara Ertter 1991-5-12 9816 Contra Costa Central Coast, Point Isabel Regional Shoreline in southwest corner of El Cerrito, on San Francisco Bay; along old railroad right-of-way between bay and Salicornia marsh. 4 Comment
  UC1555366  Geranium dissectum Jerry Powell 1988-5-18 1532 Contra Costa w Richmond Point Molate Comment
  UCD103337  Geranium dissectum Morris Halperin 1929-4-21 s.n. Contra Costa Moraga Valley. Comment
  UCD103395  Geranium dissectum Terri Williamson 1990-4-10 2 Contra Costa 212 Poshard St. Pleasant Hill. 12 Comment
  JEPS111972  Geranium molle D. G. Kelch 2004-5-9 04 .203 Contra Costa Crockett - Edwards Canyon Upper Edwards Canyon 160 Comment
  JEPS111974  Geranium molle D. G. Kelch 2004-4-25 04 .117 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Hill Southwest of large cottonwood. West of Martinez at gated end of Scenic Dr 50 Comment
  RSA0029464  Geranium purpureum Barbara Ertter 2001-5-23 17651 Contra Costa Campus of UC Berkeley, southwest corner of Haviland Hall. Comment
  UC2029017  Geranium robertianum Barbara Ertter 1999-7-17 16768 Contra Costa Tilden Regional Park, trail to Jewel Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  HSC98492  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills E of Berkeley, restoration site NE of junction of Grizzly Peak Blvd. and Golf Course Dr. Comment
  SEINET12343273  Gilia Ottley 1920-3-6 210 Contra Costa Black Hills, San Francisco Bay region Comment
  JEPS69431  Gilia achilleifolia subsp. achilleifolia W. L. Jepson 1899-4-19 15066 Contra Costa Las Trampas Ridge Comment
  UC23730  Gilia achilleifolia subsp. multicaulis Bolander April 1866 6400 Contra Costa Mt. Diablo Comment
  UC963984  Gilia achilleifolia subsp. multicaulis R. F. Hoover 1941-4-11 4831 Contra Costa Marsh Creek Canyon Comment
  UC2062648  Gilia capitata subsp. staminea Barbara Ertter with Dan Norris 2001-4-8 17596 Contra Costa Lime Ridge Open Space east of Walnut Creek. Comment
  UC691677  Gilia clivorum Mary L. Bowerman 1935-4-19 2858 Contra Costa near Turtle Rock (dry hillside on opposite side of road); Mount Diablo, near Turtle Rock 457 Comment
  UC691679  Gilia clivorum Mary L. Bowerman 1935-4-17 2840 Contra Costa North Road 2 mi from North Gate (Mount Diablo); , North Road 289 Comment
  UC2027715  Gilia clivorum Barbara Ertter with Stu Garrett 1997-3-29 15524 Contra Costa West side Mount Diablo, Burma Road above North Gate Road. Comment
  UC2029000  Gilia clivorum Barbara Ertter 2000-3-30 16919 Contra Costa North side of Mount Diablo, open rocky area ca halfway down Back Canyon Trail from Murchio Gap. Comment
  RSA489707A  Gilia tricolor H. de Forest 1930-3-28 s.n. Contra Costa Mt. Diablo. Comment
  UC335961  Gilia tricolor subsp. tricolor J. G. Lemmon 1878-4-26 Contra Costa side of Mt. Diablo Comment
  UC691596  Gilia tricolor subsp. tricolor Mary L. Bowerman 1933-3-18 1756 Contra Costa Meridian Peak w Rhine Canyon (Mount Diablo); , Meridian Peak w of Rhine Canyon Comment
  UC1051198  Gladiolus X colvillei N. Floy Bracelin 1944-6-11 2724 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS64809  Glycyrrhiza lepidota W. L. Jepson May 23 1891-May 24 1891 13599 Contra Costa Mt. Diablo Comment
  CDA6000  Gnaphalium canescens subsp. beneolens D. G. Kelch, A. G. Murdock 2004-7-16 4 .318 Contra Costa Carquinez Strait Region; Martinez-South: Pine Street entrance to Route 4 heading west. Comment
  UC1618414  Gnaphalium palustre Barbara Ertter, Brad Olson 1991-9-28 10835 Contra Costa between Orinda and El Sobrante (at s end of San Pablo Reservoir); San Pablo Reservoir 91 Comment
  UC691802  Gnaphalium palustre Mary L. Bowerman 1935-7-22 3189 Contra Costa s side Meridian Peak (Hidden Pond); Mount Diablo 518 Comment
  CDA6077  Grindelia camporum var. camporum D. G. Kelch, A. G. Murdock 2004-6-19 4 .28 Contra Costa Carquinez Strait; Crockett - Tormey Headlands. Along railroad tracks west of Carquinez Bridge Cockett (Valona). Comment
  CDA6078  Grindelia camporum var. camporum A. G. Murdock, D. G. Kelch 2004-5-28 284 Contra Costa Carquinez Strait; Pinole Peak. 0 Comment
  RSA739723  Grindelia camporum var. camporum John Dittes 2006-10-26 1416 Contra Costa San Joaquin Valley (foothills near NW edge) 2 air mile S of Marsh Creek Reservoir Gauging Station, 1.6 air mile SW of intersection of Camino Diablo and Vasco Road, Contra Costa Water District's Los Vaqueros Watershed Mitigation. 67 Comment
  CAS-BOT-BC305219  Grindelia hirsutula Alice Eastwood 1915-6-21 4730 Contra Costa San Leandro Comment
  CAS-BOT-BC305244  Grindelia hirsutula Walter Knight; I. Knight; E. McClintock; J. T. Howell; S. Rae; B. Doyle 1978-9-5 3210 Contra Costa Browns Island. Botany Cove Comment
  JEPS100140  Grindelia hirsutula G. Smick 2003-5-30 GAS 204 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS111676  Grindelia hirsutula D. G. Kelch 2003-8-13 03 .103 Contra Costa Martinez Marsh 0 Comment
  JEPS19400  Grindelia hirsutula G. Thomas Robbins 1937-4-17 135 Contra Costa near Point Richmond Comment
  JEPS40435  Grindelia hirsutula William Turner 1965-11-23 Contra Costa in the sand hills just e Antioch (along the San Joaquin River); , in the Antioch sand hills Comment
  UC1618419  Grindelia hirsutula Barbara Ertter, Diane Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10716 Contra Costa west-most point opposite Pittsburg Marina (Browns Island n of Pittsburg near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  UC630415  Grindelia hirsutula Paule Guiguet and Annetta Carter 1939-8-13 1454 Contra Costa Treat Avenue se Concord 53 Comment
  UC691868  Grindelia hirsutula Mary L. Bowerman 1930-6-18 347 Contra Costa Dan Cook Canyon Mount Diablo, Dan Cook Canyon Comment
  UC984921  Grindelia hirsutula Ira L. Wiggins 1930-4-17 4577 Contra Costa near Byron Comment
  CAS-BOT-BC305239  Grindelia hirsutula H. E. McMinn No date on label 138 Contra Costa Above Richmond ferry slip Comment
  RSA144687  Grindelia stricta var. angustifolia G. Thomas Robbins 1958-10-2 3941 Contra Costa Along Southern Pacific Railroad just W of Carlson Blvd., near Stege railroad siding, Richmond. Comment
  UC1292655  Guillenia flavescens A. R. Kruckeberg 1949-4-16 1735 Contra Costa 2 mi inside old North Entrance (not tollgate); Mount Diablo State Park Comment
  UC205988  Guillenia flavescens Katharine Brandegee Contra Costa Antioch Comment
  UC691153  Guillenia flavescens Mary L. Bowerman 1935-4-22 2879 Contra Costa 2 mi from North Gate (North Road, just w of chaparral); Mount Diablo 213 Comment
  POM300596  Guillenia flavescens Mary L. Bowerman 1935-4-22 2879 Contra Costa North Road 2 miles from North Gate, just W of chaparral. 213 Comment
  RSA34731  Guillenia flavescens R. C. Rollins 1946-3-25 3046 Contra Costa Western slope of Mount Diablo. Comment
  JEPS68950  Guillenia lasiophylla Edward Lee 1935-3-10 1279 Contra Costa Donovan Road, w watershed of Kirker Creek Kirker Pass, Kirker Creek Comment
  UC10945  Guillenia lasiophylla W. H. Brewer 1862-4-24 987 Contra Costa Martinez Comment
Read comments
Feb 5 2010
  UC10956  Guillenia lasiophylla Alice Eastwood 1893-5-5 Contra Costa Brentwood Comment
  UC205978  Guillenia lasiophylla Katharine Brandegee Contra Costa Byron Springs Comment
  UC56947  Guillenia lasiophylla H. M. Hall 1900-3-24 579 Contra Costa Briones Valley San Francisco Bay Region Comment
  UC691088  Guillenia lasiophylla Mary L. Bowerman 1933-4-26 1924 Contra Costa ese of North Peak ridge peak; Mount Diablo 609 Comment
  UC691126  Guillenia lasiophylla Mary L. Bowerman 1930-6-7 291 Contra Costa Meridian Peak summit Mount Diablo Comment
  UC74076  Gutierrezia californica Jos. Burtt Davy 1895-4-8 894 Contra Costa Antioch Comment
  UC912309  Gutierrezia californica Herbert L. Mason 1929-9-21 5435 Contra Costa 3 mi above Clayton (Marsh Creek Road) Comment
  UC50509  Hainardia cylindrica Jos. Burtt Davy 1900-6-7 6653 Contra Costa Pinole Creek Valley Comment
  UC1795862  Hedera helix Barbara Ertter 1994-10-23 13915 Contra Costa Southwest El Cerrito, north edge Breuner's parking lot, northwest of Albany Hill. Comment
  SEINET10579391  Hedera helix Barbara J. Ertter 1994-10-23 Ertter 13915 Contra Costa Southwest El Cerrito, north edge of Breuner's parking lot, northwest Albany Hill. Comment
  UC469034  Helenium bigelovii J. W. Congdon 1895-7-29 Contra Costa Martinez Comment
  CDA23633  Helianthella castanea D. G. Kelch 2007-9-8 7 .57 Contra Costa Carquinez Strait; Pinole Valley Park. Comment
  JEPS96539  Helianthella castanea Dean W. Taylor 1993-5-2 13419 Contra Costa hillside above Selby Siding, ca. 1 mile W of Carquinez Bridge, near BM 378 106 Comment
  CAS-BOT-BC305324  Helianthella castanea W. C. McCalla 1925-4-22 s.n. Contra Costa Leona Heights near Oakland Comment
  CDA31041  Helianthemum scoparium D. G. Kelch, Troy McGregor; Ed Biffin 2010-6-1 10 .229 Contra Costa Mt. Diablo. Knobcone Point Rd. Comment
  UC2028316  Helianthemum scoparium Barbara Ertter, Susan D'Alcamo 1998-6-12 16161 Contra Costa Summit Road to top of Mount Diablo. Comment
  RSA0012946  Helianthus californicus Joseph A. Ewan 1933-10-15 8037 Contra Costa SW slope of Mount Diablo. Comment
  UC2070513  Helianthus californicus Barbara Ertter 2002-8-24 18034 Contra Costa Lower Perkins Canyon on NE base of Mount Diablo. Comment
  UC697184  Helianthus gracilentus Mary L. Bowerman 1935-5-22 3055 Contra Costa Saddle w of Twin Peaks ((Eagle Point Ridge)); Mount Diablo Comment
  UC2028257  Helianthus gracilentus Barbara Ertter 1999-6-12 16722 Contra Costa Knobcone Point Road on south side of Mount Diablo, burned chamissal at head of NE fork of Sycamore Creek. Comment
  UC1063893  Heliotropium curassavicum H. S. Yates 1934-9-2 4073 Contra Costa 1 mi. n.e. Danville; Mt. Diablo Quad. 450 Comment
  UC650558  Heliotropium curassavicum Ira L. Wiggins 1930-4-18 4606 Contra Costa Jersey Isl. Comment
  CHSC75063  Helminthotheca echioides Roger Thom 1987-5-28 26 Contra Costa 3300 block of Johnson Rd. 0.3 mi from intersection with Reliez Valley Rd. Lafayette. Edge of pasture. 137 Comment
  UC1584687  Helminthotheca echioides Jerry Powell 1987-7-14 1503 Contra Costa Point Molate Beach Comment
  UC197525  Hemizonia congesta subsp. lutescens H. M. Hall 1914-9-13 9875 Contra Costa n of San Pablo Comment
  UC201231  Hemizonia congesta subsp. lutescens H. M. Hall 1914-8-23 9860 Contra Costa 2 km nw San Pablo 9 Comment
  UC201235  Hemizonia congesta subsp. lutescens H. M. Hall 1914-8-23 9860 Contra Costa 2 km nw San Pablo 15 Comment
  CAS-BOT-BC314858  Hemizonia congesta subsp. luzulifolia R. F. Hoover 1937-9-2 2709 Contra Costa Walnut Creek Comment
  CAS-BOT-BC314864  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1930-9-28 5488 Contra Costa 2 miles from Concord on road to Walnut Creek Comment
  JEPS121012  Hemizonia congesta subsp. luzulifolia D. G. Kelch 2006-7-14 06 .333 Contra Costa Between Rte 4 and Carbon Rd. E Rodeo Comment
  JEPS38255  Hemizonia congesta subsp. luzulifolia W. L. Jepson 1940-6-5 19935 Contra Costa Richmond Comment
  JEPS99532  Hemizonia congesta subsp. luzulifolia Mary L. Bowerman 1993-10-17 Contra Costa Mount Diablo. Regency road. Comment
  SEINET3840814  Hemizonia congesta subsp. luzulifolia Unknown 2006-7-14 6 .333 Contra Costa Between route 4 and Carbon road, east Rodeo 24 Comment
  UC697174  Hemizonia congesta subsp. luzulifolia Mary L. Bowerman 1933-5-25 2197 Contra Costa s-facing slope between forks of branch of Alamo Creek on s side main ridge; Mount Diablo, Oyster Ridge Comment
  UC762663  Hemizonia congesta subsp. luzulifolia R. F. Hoover 1937-9-2 2709 Contra Costa Walnut Creek Comment
  CAS-BOT-BC314871  Hemizonia congesta subsp. luzulifolia H. M. Hall 1917-5-27 10314 Contra Costa Fish Ranch, Berkeley Hills Comment
  LA203703  Hemizonia congesta subsp. luzulifolia Chas M. Belshaw; 1936-10-26 2722 Contra Costa near Walnut Creek Comment
  UC990629  Hemizonia congesta subsp. luzulifolia James I. McMurphy 1909-9-24 Contra Costa San Ramon Road above Hayward (canyon) Comment
  POM360296  Hemizonia fitchii E. E. Stanford 1930-9-20 2100 Contra Costa Near Walnut Creek Comment
  SEINET7883477 Image available Hemizonia heermannii Lewis S. Rose 1932-1 32667 Contra Costa WALNUT CREEK Comment
  CDA15242  Hemizonia pungens G. F. Hrusa, D. Crowe 1998-5-8 14373 Contra Costa Sacramento Delta; Dow Chemical property at Pittsburg adjacent to shore of San Joaquin River. Comment
  CDA7804  Hemizonia pungens subsp. maritima W. Kean 1974-6-26 Contra Costa La Casa Via, Walnut Creek. 0 Comment
  CDA38358  Heracleum lanatum A. G. Murdock 2004-4-3 260 Contra Costa Vaca Canyon. Comment
  UC901877  Heracleum lanatum L. Constance 1950-6-25 3326 Contra Costa s. rim Wildcat Canyon (Tilden Park); , Tilden Park 365 Comment
  UC2028417  Heracleum maximum Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17634 Contra Costa Northwest flank of Mount Diablo, headwaters of Arroyo del Cerro between Olofson Ridge and Long Ridge Comment
  JEPS111700  Hesperevax sparsiflora var. sparsiflora D. G. Kelch 2004-4-25 04 .124 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Hill Southwest of large cottonwood. West of Martinez at gated end of Scenic Dr 50 Comment
  JEPS33801  Hesperevax sparsiflora var. sparsiflora W. L. Jepson 1931-4-5 15719 Contra Costa Nortonville 457 Comment
  RSA445902  Hesperocnide tenella Joseph A. Ewan 1936-7-5 9731 Contra Costa Wildcat Creek. Comment
  CAS-BOT-BC167426  Hesperolinon breweri A. D. E. Elmer 1903-7-1 4545 Contra Costa Mount Diablo Comment
  CAS-BOT-BC167439  Hesperolinon breweri Helen K. Sharsmith 1947-6-2 3947 Contra Costa Headwaters of Marsh Creek, on shale (?) 0.6 miles from summit of Clayton-Tassajaro-Livermore road, Mount Diablo 304 Comment
  UC311528  Hesperolinon breweri A. D. E. Elmer July, 1903 4545 Contra Costa Mount Diablo Comment
  CAS-BOT-BC167444  Hesperolinon breweri Walter Knight; Irja Knight 1973-5-31 s.n. Contra Costa In the Nortonville coal mine area 341 Comment
  CAS-BOT-BC175984  Hesperolinon californicum Mary L. Bowerman 1933-6-14 2279 Contra Costa Inner Black Hills west of 1970. Mount Diablo Comment
  UCR168521  Hesperolinon micranthum J. T. Howell 1931-5-12 6472 Contra Costa Central Western; San Francisco Bay area, Nortonville 488 Comment
  POM139233  Hesperolinon micranthum A. D. E. Elmer 1903-07 4545 Contra Costa Mount Diablo Comment
  CAS-BOT-BC422499  Hesperomecon linearis Alice Eastwood 1921-4-18 10293 Contra Costa Antioch Comment
  UC187375  Hesperomecon linearis C. F. Baker 1903-4-25 2802 Contra Costa Antioch Comment
  CAS-BOT-BC422504  Hesperomecon linearis W. R. Ernst 1958-3-26 214 Contra Costa Between Antioch and the Antioch bridge. Comment
  JEPS112086  Heteromeles arbutifolia D. G. Kelch 2004-3-13 04 .38 Contra Costa Vaca Canyon. Alhambra Valley Road 165 Comment
Read comments
Sep 3 2013
  JEPS45024  Heteromeles arbutifolia W. L. Jepson 1921-11-19 9516 Contra Costa Mt. Diablo Comment
  JEPS111693  Heterotheca grandiflora D. G. Kelch 2004-4-3 04 .52 Contra Costa Martinez - Vine Hill West of 680. North of highway 4. 44 Comment
  CAS-BOT-BC318823  Heterotheca grandiflora Paul F. Covel 1936-9-4 563 Contra Costa Bay Farm - Alameda Bridge Comment
  JEPS124458  Heterotheca sessiliflora subsp. echioides Daniel Slakey with CNPS Volunteers 2015-6-29 134 Contra Costa Mt. Diablo State Park, Wall Point. Comment
  JEPS2467  Heterotheca sessiliflora subsp. echioides R. F. Hoover 1939-4-25 4060 Contra Costa Richmond hills Richmond Comment
  JEPS79318  Heterotheca sessiliflora subsp. echioides Edward Lee with Annetta Carter 1935-8-17 1624 Contra Costa Antioch; sand-dunes Comment
  UC692351  Heuchera micrantha var. erubescens Mary L. Bowerman 1931-4-18 718 Contra Costa Sycamore Canyon 335 Comment
  CAS-BOT-BC203383  Hibiscus lasiocarpos var. occidentalis Ira L. Wiggins 1938-8-15 9006 Contra Costa Banks of Old River branch of San Joaquin River at Highway #4 Comment
  UC1818934  Hirschfeldia incana Barbara Ertter, Mary Bowerman et al. 1995-5-7 14022 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road thru annual grassland with scattered blue oak south of Marsh Cr. Rd summit. 304 Comment
  CAS-BOT-BC325837  Holocarpha heermannii Joseph Andorfer Ewan 1933-10-15 8045 Contra Costa Mt. Diablo 1066 Comment
  CAS-BOT-BC325840  Holocarpha heermannii A. D. E. Elmer 1903-7-1 4613 Contra Costa Mount Diablo Comment
  CDA7977  Holocarpha heermannii D. G. Kelch, A. G. Murdock 2004-9-2 4 .329 Contra Costa Carquinez Strait Region; McEwen Road from Port of Costa - I-4 near summit of road. Comment
  CDA7978  Holocarpha heermannii A. G. Murdock, D. G. Kelch 2002-7-2 67 Contra Costa Carquinez Strait Region; Mt. Wanda - Martinez. Crest of Mt. Wanda on north side of main fire road. Comment
  JEPS12900  Holocarpha heermannii L. S. Rose 1941-10-13 41465 Contra Costa 1 mi e of Walnut Creek 50 Comment
  JEPS13492  Holocarpha heermannii W. L. Jepson 1920-8-12 9078 Contra Costa s slope, towards summit Mount Diablo Comment
  UC1619971  Holocarpha heermannii Barbara Ertter 1990-9-10 9641 Contra Costa Briones Hills s of Martinez (throughout Briones Regional Park); Briones Regional Park, Briones Hills Comment
  UC473456  Holocarpha heermannii John Thomas Howell 1930-9-28 5499 Contra Costa 6.3 mi from Byron (on the Marsh Creek Rd.) Comment
  UC4897718  Holocarpha heermannii Lewis S. Rose 1934-9-9 34462 Contra Costa 9 mi ne Danville Comment
  UC89060  Holocarpha heermannii T. S. Brandegee 1887-5-1 Contra Costa near Antioch Comment
  CAS-BOT-BC325833  Holocarpha heermannii John Thomas Howell 1929-9-21 4389 Contra Costa 5 miles se. of Clayton on Marsh Creek Road Comment
  CAS-BOT-BC325835  Holocarpha heermannii David D. Keck 1933-11-2 2624 Contra Costa 5 miles SE of Clayton on Marsh Creek Road just opposite Mt. Diablo Comment
  UC615581  Holocarpha heermannii Beryl O. Schreiber 1933-10-5 935 Contra Costa Comment
  JEPS75032  Holocarpha macradenia David J. Powers 1974-10-6 1001 Contra Costa 100-300 ft e Hwy 80 (100-300 yd s Appian Way); Pinole Comment
Read comments
Jul 23 2013
  CAS-BOT-BC320259  Holocarpha obconica L. S. Rose 1941-10-16 41466 Contra Costa 6 miles west of Byron, on the Marsh Creek Road 33 Comment
  RSA0033853  Holocarpha obconica Barbara Ertter 2002-11-11 18072 Contra Costa Round Valley Regional Preserve east of Mount Diablo, along Round Valley Creek/Miwok Trail. 91 Comment
  CAS-BOT-BC320249  Holocarpha obconica H. M. Hall 1930-8-7 12846 Contra Costa Vasco Road at Junction 4 miles west of Byron Comment
  POM298273  Holocarpha obconica subsp. autumnalis D. D. Keck, Jens Clausen 1933-10-27 2566 Contra Costa Vasco Road at junction with Byron Road. Comment
  RSA22274  Holocarpha obconica subsp. obconica L. S. Rose 1938-10-28 38309 Contra Costa Marsh Creek, 8 miles W of Byron. 61 Comment
  CAS-BOT-BC320329  Holocarpha virgata John Thomas Howell 1930-9-28 5502 Contra Costa 5.4 miles from Byron, on Marsh Creek Road Comment
  CAS-BOT-BC324611  Holocarpha virgata David D. Keck 1933-11-2 2620 Contra Costa Horse Valley between Lone Tree Way adn Marsh Creek Road, 6 miles from Antioch Comment
  CAS-BOT-BC324612  Holocarpha virgata David D. Keck 1933-11-2 2623 Contra Costa 5 miles east of Clayton on Marsh Creek Road just opposite Mt. Diablo Comment
  LA203994  Holocarpha virgata John Thomas Howell; 1930-9-28 5501 Contra Costa on the Marsh Creek Road, 5.4 mi. from Byron Comment
  CHSC84517  Holocarpha virgata subsp. virgata John Dittes 2003-6-28 2003 -69 Contra Costa San Joaquin Valley; foothills, ca. 13.3 air-mile north by northeast of Livermore, ca. 3.4 air-miles south by southwest of Brentwood, ca. 1.3 air-miles southeast of Marsh Creek Reservoir Gauging Station. 73 Comment
Read comments
Dec 25 2008
  UC702534  Holocarpha virgata subsp. virgata L. S. Rose 1941-10-16 41467 Contra Costa 2 mi w Byron 33 Comment
  JEPS41058  Hordeum brachyantherum subsp. brachyantherum Rimo Bacigalupi and L. R. Heckard 1965-5-11 9087 Contra Costa sw Richmond (Brooks Island, San Francisco Bay); San Francisco Bay, Brooks Island Comment
  UC691185  Hordeum brachyantherum subsp. brachyantherum Mary L. Bowerman 1935-5-16 3002 Contra Costa Russelman Park Road at Gregory Ranch junction (Mount Diablo); Mount Diablo 289 Comment
  UCD85625  Hordeum depressum P. B. Kennedy 1929-4-24 s.n. Contra Costa Corner of Franklin Canyon Road near Concord, near Soldiers Monument. Comment
  UCD85761  Hordeum jubatum V. P. Osterli 1951-7-1 s.n. Contra Costa Oakley area. Comment
  UC691196  Hordeum marinum subsp. gussoneanum Mary L. Bowerman 1933-5-11 2086 Contra Costa Inner Black Hills w of saddle , Inner Black Hills w of saddle (Mount Diablo) Comment
  UCD85893  Hordeum marinum subsp. gussoneanum L. S. Smith 1916-5-10 s.n. Contra Costa San Pablo. Grand View Terrace. Comment
  CHSC21616  Hordeum murinum subsp. leporinum Willis Ball 1974-4-21 430 Contra Costa Contra Loma Regional Park. In area #1. Immediately to the s side of the main parking lot at the s end of the lake. 38 Comment
  UC521670  Horkelia californica subsp. dissita Joseph Andorfer Ewan 1933-10-15 8023 Contra Costa Above Indian Ceremonial Spr.; Mt. Diablo Comment
  UC1606349  Horkelia californica subsp. frondosa Barbara Ertter with Dianne Lake 1991-8-18 10677 Contra Costa e;steep N-facing slope above pilings, ne of Bull Valley staging area Crockett; Carquinez Stsrait Regional Shoreline Comment
  CAS-BOT-BC532054  Horkelia californica var. frondosa V. Rattan 1887-5-22 s.n. Contra Costa Alhambra Valley Comment
  UC1795762  Hydrocotyle verticillata Barbara Ertter, Lincoln Constance 1995-6-16 14260 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River in Delta area, mud on riprap. Comment
  JEPS100042  Hypericum calycinum A. Langston 2003-6-23 AL 54 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2029057  Hypericum perforatum Barbara Ertter, Steve Matson 2003-5-31 18182 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburgh, Coal Canyon. Comment
  CDA29489  Hypochaeris glabra D. G. Kelch, Troy MacGregor 2009-5-1 09 .289-B Contra Costa Carquinez Strait; Fernandez Ranch in valley bottom along Christie Rd. Comment
  RSA31351  Hypochaeris glabra Joseph A. Ewan 1936-5-24 9692 Contra Costa W slope Bald Peak, head Wildcat Creek. Comment
  UC691776  Hypochaeris glabra Mary L. Bowerman 1933-5-25 2184 Contra Costa 411 Comment
  UC1050175  Ilex aquifolium N. Floy Bracelin 1943-1-3 2387 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS368  Isoetes orcuttii J. Burtt Davy 1895-4-7 900 Contra Costa Antioch Comment
  RSA666475  Isolepis cernua Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10713 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento and San Joaquin rivers opposite Pittsburg Marina. Comment
  CDA8051  Iva axillaris R. DeBoer 1960-1-19 Contra Costa Toll Gate House, San Rafael Bridge, Richmond. 0 Comment
  JEPS41044  Iva axillaris subsp. robustior Rimo Bacigalupi and L. R. Heckard 1965-5-11 9069 Contra Costa w side Brooks Island (sw of Richmond); San Francisco Bay Comment
  SEINET11261292  Jaumea carnosa Barbara Ertter, Elizabeth Neese 1988-10-15 7975 Contra Costa Salicornia marsh W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue.; 0 Comment
  UC613042  Jaumea carnosa C. W. Sharsmith 1933-9-15 476 Contra Costa saline marshlands near Carquinez Straits; San Pablo Bay Comment
  JEPS21838  Juglans californica var. hindsii Bryce G. Decker 1958-5-17 88 Contra Costa bank of slough 1 mi s Four Corners (se of Concord); former course of Walnut Creek Comment
  JEPS8845  Juglans californica var. hindsii Rimo Bacigalupi with C. Ritchie Bell 1951-4-13 3253 Contra Costa along creek 1 1/4 mi ne St. Mary's College; Los Trampas Creek 167 Comment
  UC691942  Juglans californica var. hindsii Mary L. Bowerman 1936-5-6 3412 Contra Costa Mitchell Canyon floor Mount Diablo (10 feet from stream) 259 Comment
  CAS-BOT-BC102303  Juglans hindsii D. E. Stone; B. L. Stone 2004-7-9 4286 Contra Costa Just inside entrance to northern perimeter of Mount Diablo State Park, at terminus of Mitchell Canyon Rd south of 172 Comment
  CAS-BOT-BC102305  Juglans hindsii Barrett Anderson 1987-4-30 3486 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD 125 Comment
  CAS-BOT-BC102307  Juglans hindsii Mary L. Bowerman 1936-5-6 3412 Contra Costa Mitchell Canyon floor 259 Comment
  JEPS100044  Juglans regia G. Smick 2003-5-30 GAS 209 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CDA32294  Juncus ambiguus G. F. Hrusa, D. Crowe 1998-5-8 14363 Contra Costa Sacramento Delta; E end of Dow Chemical property at Pittsburg. Comment
  JEPS121014  Juncus balticus D. G. Kelch 2006-7-14 06 .326 Contra Costa Along Marine Vista Ave immediately west of Pacheco Slough. East of Martinez Comment
  UC691939  Juncus balticus Mary L. Bowerman 1933-9-15 2444 Contra Costa s-face Meridian Peak; Mount Diablo, , Hunt Spring 762 Comment
  IRVC14055  Juncus balticus J. Lanier 1967-5-21 s.n. Contra Costa Tice Valley Comment
  CHSC116624  Juncus balticus subsp. ater Lowell Ahart; Josephine Guardino 2016-4-19 20785 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along a small drainage, west of the poor dirt road, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  UCD141351  Juncus balticus subsp. ater M. Wiesendanger 1926-5-1 1472 Contra Costa near Richmond. Comment
  UC2028264  Juncus bufonius var. bufonius Barbara Ertter 1999-6-12 16716 Contra Costa West Branch Alamo Creek on south flank of Mount Diablo, along unofficial path running from north spur of Black Hawk Ridge Road to south spur off of Knob Cone Point Road (near powerline). Comment
  UC2028305  Juncus bufonius var. congestus Barbara Ertter, Susan D'Alcamo 1998-6-12 16200 Contra Costa Along Curry Canyon Road just east of Curry Point, south side of Mount Diablo. Comment
  CDA9521  Juncus effusus D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .25 Contra Costa CA Delta; Along the old San Joaquin River Channel, S of Clifton Court Forebay and SE of Byron. Comment
  UC2028532  Juncus occidentalis Barbara Ertter 1998-5-3 16035 Contra Costa Above SW of fork of Pine Creek at southwest base of Mount Diablo. Comment
  POM300634  Juncus patens Mary L. Bowerman 1938-6-30 3703 Contra Costa Plants of Mount Diablo: Lower Canyon Spring, which is moister than the upper spring. 976 Comment
  JEPS102895  Juncus phaeocephalus var. paniculatus Barbara Ertter 1998-5-3 16061 Contra Costa below Stage Road SE of Turtle Rock ponds Mount Diablo 304 Comment
  JEPS111080  Juncus phaeocephalus var. paniculatus Lee Echols 2003-6-2 s.n. Contra Costa N of Lark Drive in SW portion of grassland within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond 15 Comment
  RSA368317  Juncus phaeocephalus var. paniculatus H. de Forest 1930-5-7 s.n. Contra Costa Road near Morage. Comment
  UC2029169  Juncus xiphioides Barbara Ertter 2000-7-16 17407 Contra Costa Pine Creek on WNW base of Mount Diablo Comment
  UC691977  Juncus xiphioides Mary L. Bowerman 1932-10-1 1601 Contra Costa Mitchell Canyon Mount Diablo Comment
  UC691979  Juncus xiphioides Mary L. Bowerman 1933-6-21 2337 Contra Costa Donner Canyon Mount Diablo 335 Comment
  RSA352511  Juniperus californica Mark Morris 1929-03 s.n. Contra Costa Mt. Diablo. Comment
  UC1134276  Juniperus californica R. W. Lundh 1932-8-26 147 Contra Costa Laurel Dell Camp Mt. Diablo Mt. Diablo Quadrangle, Mt. Diablo 899 Comment
  UCR168453  Juniperus californica Joseph A. Ewan 1933-10-15 8038 Contra Costa Coast Range, Mount Diablo, southwest slope 1067 Comment
  SEINET10531634  Juniperus californica Lewis S. Rose 1941-3-22 Rose 41052 Contra Costa Mt. Diablo, west slope. 915 Comment
  UCSB6170  Keckiella corymbosa Keator, Glenn 1959-7-1 Contra Costa 1/4 mile above Laurel camp on Mt. Diablo Comment
  UC691222  Koeleria macrantha Mary L. Bowerman 1931-5-2 796 Contra Costa n end of Eagle Point ridge Mount Diablo (in canyon on n face, upper end); , n end of Eagle Point Ridge Comment
  SEINET10607073  Koeleria macrantha Virginia E. Long 1933-6-14 Long 223 a Contra Costa Mt. Diablo. On top of grassy ridge between Curry Cave trail canyon & W. fork. 457 Comment
  CAS-BOT-BC273618  Koeleria pyramidata Walter Knight 1972-4-1 s.n. Contra Costa Mallard Slough between Port Chicago and Pittsburg Comment
  UC691804  Lactuca saligna Mary L. Bowerman 1932-11-26 1676 Contra Costa Maple Spring; Mount Diablo Comment
  JEPS100181  Lactuca serriola A. Langston 2003-8-26 AL 85 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC340537  Lactuca serriola Walter Knight; Irja Knight; J. T. Howell; E. McClintock 1978-9-5 3236 Contra Costa Browns Island Comment
  RSA40156  Lactuca virosa J. T. Howell 1943-8-22 19310 Contra Costa Near head of San Leandro Creek Canyon. 244 Comment
  UC2029078  Lactuca virosa Barbara Ertter 2000-7-16 17402 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  UC1818925  Lagophylla ramosissima Barbara Ertter, Mary Bowerman 1995-6-11 14253 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, bank of Indian Creek above Indian Valley Pond, partial sun on Franciscan layer. 76 Comment
  UC2043144  Lamium amplexicaule Barbara Ertter with David Gowen 2015-2-22 22228 Contra Costa Green Ranch area on Mount Diablo SE of summit, between Green Ranch Road and Alder Creek. Comment
  UC2028539  Lamium amplexicaule Barbara Ertter 1998-3-1 15920 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, Sulfur Creek upstream from Good's Spring. Comment
  CAS-BOT-BC412725  Lastarriaea coriacea James McMurphy 1909-5-20 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC412727  Lastarriaea coriacea Dr. A. Kellogg; W. G. W. Harford 1868-1-1 865 Contra Costa Antioch Comment
  RSA523885  Lasthenia californica Barbara Ertter, Jim Jokerst, D. Magney 1989-4-5 8119 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  UC2028998  Lasthenia californica Barbara Ertter 2000-3-30 16915 Contra Costa North side of Mount Diablo, grassy S-facing hillside between Deer Flat Creek and Bald Ridge, off-trail east of Meridian Ridge Road. Comment
  UC62991  Lasthenia californica subsp. californica H. M. Hall 1901-4-5 1749 Contra Costa Mt. Diablo Region of San Francisco Bay Comment
  RSA0068474  Lasthenia californica subsp. californica Katie Gallagher, Nick Jensen 2014-4-26 205 Contra Costa Las Trampas Regional Wilderness. 487 Comment
  UC1728009  Lasthenia conjugens R. Ornduff 1998-5-10 10186 Contra Costa pasture on N side of Hwy 4 and e of I-80 Comment
  UC33073  Lasthenia conjugens Edw. L. Greene 1887-4-17 Contra Costa Antioch Comment
  UC90073  Lasthenia conjugens T. S. Brandegee Jun 1884 Contra Costa Walnut Creek Comment
  UC1363770  Lasthenia ferrisiae Robert Ornduff 1958-4-23 4945 Contra Costa 0.9 mi e junction of Bixler Road and Highway 4 (n of Hwy 4, n of Byron) Comment
  UC762046  Lasthenia fremontii R. F. Hoover 1937-5-14 2118 Contra Costa Byron Hot Springs Comment
  CAS-BOT-BC352925  Lasthenia glaberrima A. D. E. Elmer 1903-5-1 4321 Contra Costa Walnut Creek Comment
  CAS-BOT-BC352927  Lasthenia glaberrima A. D. E. Elmer 1903-5-1 4321 Contra Costa Walnut Creek Comment
  JEPS116855  Lasthenia glaberrima David Gowen 2007-4-16 675 Contra Costa Briones Regional Park in the northern Maricich Lagoon. Comment
  JEPS17268  Lasthenia glabrata subsp. glabrata R. F. Hoover 1936-4-16 974 Contra Costa e slope Bald Peak Comment
  UCD133763  Lasthenia glabrata subsp. glabrata P. B. Kennedy 1925-4-26 s.n. Contra Costa Mt. Diablo. Comment
  CAS-BOT-BC352803  Lasthenia glabrata subsp. glabrata A. Kellogg 1877-4-1 31 Contra Costa Mount Diablo: Mitchell-Pine divide, northernmost 2750 ft. point 838 Comment
  JEPS89771  Lasthenia gracilis Dean William Taylor 991 Contra Costa along Byron Road (J4) at the junction of Holley Road; Byron Road 15 Comment
  UC1563907  Lasthenia gracilis Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8119 Contra Costa alkali sink w and adjacent to Clifton Court Forebay (ca. 15 air mi sw of Stockton) 0 Comment
  UC30435  Lasthenia gracilis Jos. Burtt Davy 1895-4-7 891 Contra Costa Antioch Comment
  POM301015  Lasthenia microglossa Mary L. Bowerman 1932-3-27 1141 Contra Costa Mitchell Rock. Comment
  JEPS9811  Lasthenia minor Anna E. Ehlers 1920-4-18 557 Contra Costa near Mt. Diablo; Pine Canyon Comment
  RSA138191  Lathyrus jepsonii subsp. californicus Volney Rattan 1887-5-22 s.n. Contra Costa Alhambra Valley. Comment
  CAS-BOT-BC205011  Lathyrus jepsonii var. jepsonii E. E. Stanford 1930-5-24 1515 Contra Costa Marsh Creek Canyon Comment
  CAS-BOT-BC205012  Lathyrus jepsonii var. jepsonii Alice Eastwood 1915-6-21 4729 Contra Costa San Leandro Comment
  UCD130164  Lathyrus jepsonii var. jepsonii Stephen P. Rae 1978-9-5 s.n. Contra Costa Browns Island. In Sacramento River near Pittsburg (in known location). 2 Comment
  UC764680  Lathyrus vestitus R. F. Hoover 1941-4-12 4844 Contra Costa w branch of San Pablo Creek San Pablo Creek Comment
  JEPS55365  Lathyrus vestitus var. vestitus H. L. Mason 1931-4-4 Contra Costa se of Mt. Diablo; Upper Marsh Creek Comment
  JEPS91399  Lathyrus vestitus var. vestitus Dean W. Taylor 1993-5-2 13420 Contra Costa hillside above Selby Siding, ca. 1 mile W of Carquinez Bridge, near BM 378 106 Comment
  CAS-BOT-BC323927  Layia chrysanthemoides Alice Eastwood 1921-4-18 10257 Contra Costa Antioch Comment
  UC1543175  Layia chrysanthemoides Donald G. Nelson 1937-3-30 475 Contra Costa Railroad tracks, paralleling the highway s Byron (on road to Tracy) Comment
  CAS-BOT-BC323908  Layia chrysanthemoides Brandegee no date on sheet s.n. Contra Costa Antioch Comment
  UC30668  Layia gaillardioides H. P. Chandler 1900-3-24 Contra Costa Briones Hills; Mount Diablo Comment
  UC691553  Layia gaillardioides Mary L. Bowerman 1933-5-5 2001 Contra Costa toward mouth Alamo Canyon; Mount Diablo 304 Comment
  CAS-BOT-BC321081  Layia glandulosa C. F. Baker 1910-4-9 16 Contra Costa Antioch Comment
  JEPS13502  Layia glandulosa Robert F. Hoover 1935-3-10 315 Contra Costa Antioch Comment
  UC30623  Layia glandulosa unknown 1900-4-5 Contra Costa Oakley Comment
  UC30627  Layia glandulosa The Postmaster 1900-3-24 Contra Costa Oakley Comment
  CAS-BOT-BC327249  Layia hieracioides David D. Keck 1941-6-5 5307 Contra Costa Berkeley Hills, Fish Creek Rd., 0.25 mi W of E. portal of Broadway Tunnel 335 Comment
  CAS-BOT-BC370664  Layia platyglossa Alice Eastwood 1921-4-18 10279 Contra Costa Antioch Comment
  CAS-BOT-BC377907  Layia platyglossa Lewis S. Rose 1933-4-17 33093 Contra Costa Antioch Comment
  UC1069769  Layia platyglossa C. M. Belshaw 1936-5-8 2064 Contra Costa se slope Mt. Diablo; Mt. Diablo Quad. Comment
  UC30667  Layia platyglossa R. C. Marsh 1900-4-5 Contra Costa Antioch Comment
  UC691490  Layia platyglossa Mary L. Bowerman 1931-5-7 811 Contra Costa grassy area near saddle on side North Peak; Mount Diablo, Meridian-North Peak saddle Comment
  UC697166  Layia platyglossa Mary L. Bowerman 1935-4-26 2916 Contra Costa ridge w of Indian Ceremonial Spring; Mount Diablo 1005 Comment
  CAS-BOT-BC377905  Layia platyglossa Paul F. Covel 1938-5-8 s.n. Contra Costa Mt. Diablo Comment
  CDA31884  Leersia oryzoides D. G. Kelch 2007-11-13 7 .656 Contra Costa Carquinez Strait; Old brick factory 1.2 km SE of Port Costa. Comment
  UC1607680  Lemna minuscula Barbara Ertter, Chris Thayer 1993-5-7 11690 Contra Costa Hopkins Spring 1/2 mi se of Inspiration Point (on Wildcat Canyon Road, East Bay Municipal Utilities District land e of Tilden Park); Hopkins Spring, Wildcat Canyon Road 304 Comment
  UC650364  Lemna minuscula Ira L. Wiggins 1930-4-18 4607 Contra Costa Jersey Island Comment
  CAS-BOT-BC215739  Lepechinia calycina Joanne Taylor 1941-7-18 18 Contra Costa Nortonville 243 Comment
  JEPS63257  Lepechinia calycina W. L. Jepson 1898-5-18 Contra Costa Mount Diablo Comment
  SBBG21163  Lepechinia calycina V. Haraden 1941-7-18 11 Contra Costa near Nortonville 121 Comment
  CAS-BOT-BC88704  Lepidium acutidens Volney Rattan 1879-1-1 s.n. Contra Costa Antioch. Comment
  CAS-BOT-BC88705  Lepidium acutidens R. F. Hoover 1967-4-28 10507 Contra Costa Byron Hot Springs. Comment
  UCD144312  Lepidium chalepense G. F. Hrusa; D. Crowe 1998-5-8 14374 Contra Costa Sacramento-San Joaquin River Delta. On Dow Chemical property at Pittsburg adjacent to shore of San Joaquin River. 2 Comment
  SBBG29865  Lepidium dictyotum A. M. Carter 1935-3-10 753 Contra Costa Kirker Pass Rd, S of jct with Nortonville Rd 121 Comment
  UC518001  Lepidium dictyotum var. acutidens Lewis S. Rose 1933-3-29 33041 Contra Costa Nortonville Comment
  CHSC67908  Lepidium dictyotum var. dictyotum James D. Jokerst 1989-3-29 3073 Contra Costa Byron Hot Springs area NE of Livermore, adjacent to pipeline on terrace S of ephemeral creek. Comment
  RSA0029768  Lepidium didymum Barbara Ertter 1990-5-15 8991 Contra Costa South El Cerrito, north foot of Albany Hill at end of Yosemite Avenue cul-de-sac. Comment
  UC2070650  Lepidium latifolium Barbara Ertter 2002-8-24 18021 Contra Costa Dunn Creek south of Mount Diablo Mine property on NE base of Mount Diablo. Comment
  UC691078  Lepidium latipes Mary L. Bowerman 1933-4-15 1846 Contra Costa canyon s Arroyo del Cerro; Mount Diablo Comment
  POM300576  Lepidium latipes Mary L. Bowerman 1933-4-15 1846 Contra Costa Canyon S of Arroyo del Cerro Comment
  JEPS116958  Lepidium latipes var. latipes David Gowen 2008-4-6 841 Contra Costa East of Marsh Creek Road on north side of Camino Diablo Road, near stock pond. Comment
  RSA128365  Lepidium nitidum P. H. Raven 1950-3-5 1403 Contra Costa 0.75 mile from place where it meets Orinda - Richmond Road, Bear Creek Road. 107 Comment
  CHSC69639  Lepidium nitidum var. oreganum James D. Jokerst 1989-3-28 3051 A Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  JEPS73692  Lepidium oxycarpum L. R. Heckard with Wm. Hirano and Ted Niehaus 1968-3-5 1761 Contra Costa about 3 mi se Byron (at junction of Holey Road, along Byron-Bethany road) 7 Comment
  JEPS99536  Lepidium strictum Mary L. Bowerman 1995-5-28 Contra Costa Mount Diablo, fire road from Macedo Ranch to Wall Pt. Ridge. Comment
  CAS-BOT-BC226592  Leptosiphon ambiguus Mary L. Bowerman 1934-3-18 2481 Contra Costa Mount Diablo. West of Russelman Park on edge of Donner Canyon Comment
  UC1287418  Lessingia pectinata var. tenuipes Willard Spence 1960-9-2 609 Contra Costa 0.2 mi e of Antioch Boat Ramp; Antioch Comment
  RSA299549  Lessingia pectinata var. tenuipes Edward Lee, Annetta Carter 1935-8-17 1621 Contra Costa Antioch Comment
  UC691812  Lessingia pectinata var. tenuipes Mary L. Bowerman 1936-8-25 3535 Contra Costa due w of 1004 point Lime Ridge (and n of the chaparral patch); Mount Diablo, Lime Ridge 228 Comment
  UC1050586  Leucospermum grandiflorum N. Floy Bracelin 1943-1-3 1933 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CDA39788  Leymus X multiflorus Guise 2014-2-27 PDR# 070 P06223831 Contra Costa El Sobrante, San Pablo Dam Road, East Bay Regional Parks. 0 Comment
  UCD92455  Leymus X multiflorus Beecher Crampton 1956-5-14 3424 Contra Costa 3.2 miles W of Martinez, on the road to Crockett. Above Suisun Bay. Comment
  UCD87711  Leymus triticoides Nougart 1916-12-1 s.n. Contra Costa Walnut Creek. Comment
  JEPS111551  Ligustrum lucidum D. G. Kelch 2005-5-13 05 .234 Contra Costa Martinez Martinez. South of oil refinery along Railroad tracks in fragment of habitat 28 Comment
  OBI12566  Limnanthes douglasii subsp. rosea Robert F. Hoover 1936-3-19 809 Contra Costa Byron Hot Springs Comment
  UC615175  Limnanthes douglasii subsp. rosea Beryl O. Schreiber 1932-3-27 158 Contra Costa Byron Hot Springs Comment
  UC1949286  Limnanthes douglasii subsp. rosea Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 Contra Costa sink W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton Comment
  SEINET1909954  Limnanthes douglasii var. rosea Barbara Ertter, Jim Kokerst, Dave Magney 1989-1 8115 Contra Costa San Diendo Co.: Black Mt. N Romona along clevland NF Rd 11S04 2.3 mi from Pamo Valley Rd, roadcut. 457 Comment
  CDA33363  Limnobium laevigatum Robin Breckenridge 2010-10-1 PDR# 5059103 Contra Costa Oakley; Bradford Island, Santa Clara Shoal. 0 Comment
  UCD170113  Limnobium laevigatum R. Breckenridge; K. Filippini 2010-10-1 s.n. Contra Costa Sacramento/San Joaquin Delta. Bradford Island. Comment
  JEPS108215  Linanthus ambiguus David Gowen 2005-4-26 268 Contra Costa Mt. Diablo State Park. Clayton Oaks Rd. (dirt), which follows the ridge east of Donner Canyon, ca 20 feet south of junction with Bruce Lee Trail. Comment
  UC691637  Linanthus androsaceus Mary L. Bowerman 1931-4-18 716 Contra Costa Sycamore Canyon Mount Diablo 335 Comment
  UC691639  Linanthus bicolor Mary L. Bowerman 1931-3-29 625 Contra Costa n side, 500 ft from top Cave Point; Mount Diablo Comment
  UC691642  Linanthus bicolor Mary L. Bowerman 1933-5-8 2034 Contra Costa Rock City; Mount Diablo Comment
  UC1819039  Linanthus bicolor Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14239 Contra Costa South side Mount Diablo, road to Sheepherders Springs 1/2 mile north of Curry Point from Sloan Road, clay at edge of grassland/woodland. 426 Comment
  JEPS108358  Linanthus bolanderi David Gowen 2005-4-11 228 Contra Costa Mt. Diablo State Park. Below Devils Elbow in the upper part of Rhine Canyon drainage. Comment
  UC367216  Linanthus ciliatus J. G. Lemmon Contra Costa Mount Diablo Comment
  UC932049  Linanthus ciliatus Verne Grant and Alva Grant 1948-5-15 8503 Contra Costa on Sommerville to Antioch road; Sommerville Range Comment
  JEPS123332  Linanthus parviflorus David Gowen with Chris Thayer 2010-4-30 1090 Contra Costa North of Briones Reservoir. Rocky area on hill above Oursan Trail just west of its junction with Hampton Trail. Comment
  CDA29106  Linum bienne D. G. Kelch 2006-5-7 06 .148-B Contra Costa Carquinez Strait.; Crockett. Upper Edward s Canyon. Comment
  JEPS116495  Linum grandiflorum J. Greenhouse with John Game 2008-5-26 5127 Contra Costa Lime Ridge Open Space, Paradise Canyon Trail above subdivision Comment
  UC198752  Linum lewisii Chesnut and Drew 1889-4-16 Contra Costa Martinez Comment
  UC2062654  Linum usitatissimum Barbara Ertter 2004-4-25 18367 Contra Costa Coulter Pine Trail on north side of Mount Diablo State Park. Comment
  CDA40556  Lithophragma affine V. Guise & K. Alder 2014-4-3 PDR# 070 P06223873 Contra Costa Danville; 0.5 mile north & 0.5 mile east of the end of Finley Road. 0 Comment
  POM203654  Lithophragma affine subsp. affine John T. Howell 1933-5-14 11280 Contra Costa Hills east of St. Mary s college Comment
  UC692447  Lithophragma heterophyllum Mary L. Bowerman 1931-3-21 585 Contra Costa Sycamore Canyon 335 Comment
  UCR246792  Lithophragma heterophyllum Dean Kelch 2011-5-4 11 .226 Contra Costa Central Coast, near Morgan Territory Regional Park, west of Morgan Territory Road 610 Comment
  CDA25420  Lithophragma heterophyllum G. D. Barbe 1962-4-19 665 Contra Costa Trail above earth dam, west side of Morgan Territory Road, 8 1/2 miles south of Clayton, east side of Mt. Diablo. Comment
  CHSC57511  Lithophragma parviflorum var. parviflorum Willis Ball 1975-4-19 522 Contra Costa Contra Loma Regional Park, in area #2. On n facing slope ca. 100 yds nw of boat ramp on w side of lake. 36 Comment
  JEPS111854  Lobularia maritima A. G. Murdock 2004-5-28 304 Contra Costa Luzon 60 Comment
  UC2031413  Lobularia maritima Barbara Ertter with David Gowen 2006-4-14 18666 Contra Costa Lime Ridge Open Space (City of Concord) at NW foot of Mt Diablo, grassland along Ohlone Trail SE of Ygnacio Valley Road Comment
  UC31925  Logfia filaginoides Kellogg May 1874 Contra Costa Mt. Diablo Comment
  UC691820  Logfia filaginoides Mary L. Bowerman 1931-5-16 854 Contra Costa s side Meridian Peak summit; Mount Diablo, Meridian Peak summit Comment
  CHSC21628  Lolium multiflorum Willis Ball 1975-4-19 524 Contra Costa Contra Loma Regional Park. In area #1. Immediately to the s side of the main parking lot at the s end of the lake. 33 Comment
  UC691200  Lolium multiflorum Mary L. Bowerman 1935-5-16 3003 Contra Costa Russelman Park Road at Gregory Ranch junction; Mount Diablo 289 Comment
  CAS-BOT-BC283394  Lolium multiflorum Mary L. Bowerman 1938-5-25 3630 Contra Costa Mount Diablo. Arroyo del Cerro, by North Rd 109 Comment
  POM300593  Lolium temulentum Mary L. Bowerman 1933-5-17 2096 Contra Costa Branch of Curry Canyon due south of Olafsons' barn. Comment
  UC50693  Lolium temulentum Alice Eastwood 1893-5-3 Contra Costa Antioch Comment
  UC691261  Lolium temulentum Mary L. Bowerman 1932-4-27 1367 Contra Costa Oyster Ridge, s face Mount Diablo (w-facing slope of ridge w of Riggs Canyon); , Oyster Ridge, s face Comment
  UC21195  Lomatium caruifolium var. caruifolium W. H. Brewer 1862-5-20 1128 Contra Costa hill n. of coal mines on n. side of Mt. Diablo Comment
  UCD150873  Lomatium caruifolium var. caruifolium P. B. Kennedy 1914-3-15 4625 Contra Costa Sunset Cemetery. Comment
  JEPS73314  Lomatium dasycarpum subsp. dasycarpum Edward Lee with Joe Ewan and Annetta Carter 1934-4-30 741 Contra Costa near the boat harbor Richmond Comment
  UC1084396  Lomatium dasycarpum subsp. dasycarpum G. Thomas Robbins 1937-4-17 137 Contra Costa near Point Richmond Comment
  UC691420  Lomatium dasycarpum subsp. dasycarpum Mary L. Bowerman 1932-2-28 1095 Contra Costa W of Blackberry Spring; Mount Diablo Comment
  UC763127  Lomatium dasycarpum subsp. dasycarpum R. F. Hoover 1939-4-13 4017 Contra Costa Markley Canyon, head of W branch Comment
  POM301009  Lomatium macrocarpum Mary L. Bowerman 1935-4-26 2917 Contra Costa Contra Costa County: Ridge W of Indian Ceremonial Spring: Rocky ridge with S exposure. 1006 Comment
  CDA42380  Lonicera hispidula D. G. Kelch 2012-5-27 12 .071 Contra Costa Carquinez Strait Region; Pinole Valley Park. Comment
  SEINET12266795  Lonicera hispidula var. californica M. T. Doutt 1930-1 86 Contra Costa Marsh Creek Comment
  CDA28994  Lonicera hispidula var. vacillans D. G. Kelch, Suzanne Latham, Matt Beyers 2009-6-3 9 .33 Contra Costa East Bay.; El Sobrante Ridge at end of Silver Belt Dr. on Miocene chert outcrop. Comment
  JEPS111772  Lonicera hispidula var. vacillans D. G. Kelch 2004-5-2 04 .167 Contra Costa Crockett - Edwards Canyon 125 Comment
  JEPS21911  Lonicera hispidula var. vacillans L. T. Dempster 1958-11-6 1179 Contra Costa at 15 El Toyonal Orinda Comment
  POM181453  Lonicera involucrata Ira L. Higgins 1930-4-18 4594 Contra Costa Levee, east end of Jersey Island. Comment
  CAS-BOT-BC241458  Lonicera involucrata var. ledebourii Ira L. Wiggins 1930-4-18 4594 Contra Costa Levee, east end of Jersey Island Comment
  UC1051220  Lonicera pileata f. yunnanensis N. Floy Bracelin 1942-9-27 1183 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS12852  Lonicera subspicata var. denudata W. L. Jepson 1920-9-6 9080 Contra Costa Donner Canyon, on ridge towards high spring under saddle Mt. Diablo Comment
  JEPS12856  Lonicera subspicata var. denudata Mary L. Bowerman 1931-6-4 922 Contra Costa summit Meridian Peak; Mt. Diablo Comment
  UC1051339  Lophospermum erubescens N. Floy Bracelin 1941-6-15 1389 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  RSA720794  Lotus corniculatus Barbara J. Ertter, Kristin Ertter 1995-7-11 14473 Contra Costa Sulfur Srping on Pine Cr., Diablo Foothills Regional Park SWof Walnut Creek. 122 Comment
  POM18639  Lotus humistratus C. F. Baker 1903-4-28 7481 Contra Costa Marsh Creek, Mt. Diablo. Comment
  UC692528  Lotus micranthus Mary L. Bowerman 1938-6-2 3655 Contra Costa Dan Cook Canyon Mount Diablo 487 Comment
  UC692270  Lotus scoparius Mary L. Bowerman 1932-9-24 1589 Contra Costa ridge running w from Twin Peaks; Mount Diablo 335 Comment
  RSA181412  Lotus strigosus James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  SEINET3560064 Image available Lotus subpinnatus Rimo Bacigalupi, L. R. Heckard 1965-5-11 9082 Contra Costa Brooks Island 30 Comment
  CDA9199  Lotus wrangelianus D. G. Kelch, D. A. Weinstein 2008-4-15 8 .047 Contra Costa Carquinez Strait; S Port Costa along Mckewen Rd. Comment
  JEPS111865  Lunaria annua D. G. Kelch 2004-5-9 04 .214 Contra Costa Crockett - Eckley Hills north of Bull Valley Staging Area 13 Comment
  UC15755  Lupinus affinis W. H. Brewer 1862-4-25 996 Contra Costa Martinez Comment
  JEPS77021  Lupinus albifrons Robert M. Lloyd 1963-3-17 2146 Contra Costa 1 mi s intersection of Grizzly Peak and Skyline on Skyline; on Skyline Comment
  UC15822  Lupinus albifrons W. H. Brewer 1862-5-1 1038 Contra Costa s Camp 69; s of Camp 69 Comment
  UC764598  Lupinus albifrons Robert F. Hoover 1935-3-10 300 Contra Costa Antioch Comment
  UC1607647  Lupinus albifrons var. albifrons Barbara Ertter 1993-4-2 11474 Contra Costa along railroad w Crockett (base of n-facing bluffs at w end of Carquines Strait, San Pablo Bay); San Pablo Bay, w end of Carquines Strait Comment
  CAS-BOT-BC201374  Lupinus albifrons var. albifrons Charles Piper Smith 1922-5-20 3530 Contra Costa Lafayette - trolly line Comment
  UC127018  Lupinus albifrons var. collinus J. Burtt Davy 1897-4-17 Contra Costa Point Isabel Comment
  UC1818990  Lupinus arboreus Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14670 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay, edge of coastal bluff on south side of Point Molate. Comment
  CDA27418  Lupinus bicolor D. G. Kelch, A. G. Murdock 2005-4-24 5 .166 Contra Costa Carquinez Strait Region; Franklin Canyon. Collier Hill. West Carbon. Comment
  UC1076228  Lupinus bicolor Herbert L. Mason 1931-4-5 5821 Contra Costa Antioch sandhills Comment
  UC15944  Lupinus bicolor Brewer 1862-5-23 1149 Contra Costa Mt. Diablo Comment
  POM350000  Lupinus bicolor L. S. Rose 1942-4-23 42013 Contra Costa Walnut Creek Comment
  UCSB11603  Lupinus bicolor Grah, Nancy 1962-4-14 Contra Costa 0.8 miles on Tappan Lane; north of Tarry Lane, Orinda 243 Comment
  RSA442325  Lupinus bicolor subsp. microphyllus H. de Forest 1930-4-12 14147 Contra Costa Coalinga Comment
  POM252849  Lupinus bicolor subsp. pipersmithii A. A. Heller 1938-4-9 15019 Contra Costa Near the west end of the Antioch bridge. Comment
  POM10667  Lupinus bicolor subsp. tridentatus H. P. Chandler 975 Contra Costa Between Pine Canyon and the Summit. Comment
  UC1073380  Lupinus bicolor subsp. umbellatus George B. Rossbach 1955-3-13 323 Contra Costa just e Antioch (along San Joaquin River); , just e of Antioch Comment
  SEINET10937078  Lupinus densiflorus Frenkel 1964-4-18 FRENKEL 425 Contra Costa 2.1 mi. I of danville on tassajara rd. 130 Comment
  UC2061498  Lupinus formosus Dean G. Kelch 2016-5-23 16 .124 Contra Costa Carquinez Strait: Hill between Cumming's Skyway & Canada de Cierbo. Comment
  UC692523  Lupinus formosus Mary L. Bowerman 1931-10-5 1055 Contra Costa Marsh Creek at Curry Canyon Mount Diablo; , Marsh Creek at Curry Canyon 231 Comment
  RSA0026155  Lupinus formosus var. formosus Barbara Ertter, J. Travis Columbus 1990-6-10 9116 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill.; grassy hill SE of Alhambra Valley staging area. 152 Comment
  CDA15261  Lupinus microcarpus G. F. Hrusa, D. Crowe 1998-5-8 14392 Contra Costa Sacramento Delta; E end of Dow Chemical property in Pittsburg. Comment
  JEPS112346  Lupinus microcarpus Dean G. Kelch and Andrew G. Murdock 2004-4-25 04 .110 Contra Costa Martinez - West: Ozol Rock and Scenic Drive; County: contra Costa; West Martinez on Carquinez Dr. Comment
  RSA0033773  Lupinus microcarpus Barbara Ertter, Christopher Baysdorfer 1998-5-10 16120 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, quarry area on west side. Comment
  CDA27486  Lupinus microcarpus var. densiflorus A. G. Murdock, D. G. Kelch 2003-6-2 88 Contra Costa Carquinez Strait Region; Crockett - Eckley. East of pier at base of cliff. Comment
  CDA31091  Lupinus microcarpus var. densiflorus D. G. Kelch, Troy McGregor; Ed Biffin 2010-6-1 10 .216-B Contra Costa Mt. Diablo. Knobcone Point Rd. Comment
  UC1607963  Lupinus microcarpus var. densiflorus Donald G. Nelson 1937-4-24 515 Contra Costa e of Mount Diablo (n of Byron along Marsh Creek Road); Marsh Creek Road 60 Comment
  UC201012  Lupinus microcarpus var. densiflorus Katharine Brandegee 1918-6-16 Contra Costa near Virgorit Powder Works; near Vigorit Powder Works Comment
  UC201014  Lupinus microcarpus var. densiflorus Katharine Brandegee 1918-6-16 Contra Costa near Virgorit Powder Works; near Vigorit Powder Works Comment
  SD103749  Lupinus microcarpus var. densiflorus Walter Knight, Irja Knight 1979-6-8 3397 Contra Costa San Pablo Dam Road between Orinda & El Sobrante Comment
  JEPS65467  Lupinus microcarpus var. microcarpus W. L. Jepson 1921-5-22 9214 Contra Costa Mt. Diablo; Mt. Diablo, s slope 609 Comment
  UC15961  Lupinus microcarpus var. microcarpus J. Burtt Davy April 1895 Contra Costa Antioch Comment
  UC201020  Lupinus microcarpus var. microcarpus Katharine Brandegee June 1918 Contra Costa along El Dorado St. Richmond Annex (Richmond Annex) Comment
  UC2028075  Lupinus pachylobus Barbara Ertter, Tony Morosco 1998-4-12 16002 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC2070441  Lupinus pachylobus Barbara Ertter with Linda Vorobik 2002-4-6 17823 Contra Costa South side of Mount Diablo, roadside NW of Curry Point trailhead. Comment
  CDA37273  Lupinus succulentus D. G. Kelch 2011-3-31 11 .078 Contra Costa Carquinez Region; Richmond; Hilltop Lake Park. Comment
  UC691937  Luzula comosa Mary L. Bowerman 1933-5-8 2021 Contra Costa Mount Diablo , Rock City Ridge, = Fossil Ridge (half way down to canyon bottom Rock City Ridge, = Fossil Ridge) Comment
  UC2028401  Luzula comosa Barbara Ertter with Dan Norris 1998-6-18 16225 Contra Costa Lower Devil's Slide trail falong W Fork Sycamore Creek (Madrone Canyon), south side of Mount Diablo, along path in woods Comment
  UC72374  Luzula macrantha Harley P. Chandler 1901-3-22 851 Contra Costa Martinez Comment
  CAS-BOT-BC441218  Luzula macrantha Mary L. Bowerman 1933-5-8 2021 Contra Costa Mount Diablo: Fossil Ridge, north face, halfway down to canyon bottom Comment
  CDA20732  Lycium chinense J. Deviney 2006-7-5 PDR 1374005 Contra Costa Viano Vineyards, 150 Morello Ave., Martinez. Comment
  UC1051000  Lycium chinense var. inerme N. Floy Bracelin 1943-9-26 2607 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CDA29701  Lythrum hyssopifolia D. G. Kelch, D. A. Weinstein 2009-7-15 9 .495 Contra Costa Carquinez Strait; Point Pinole. Comment
  JEPS100062  Lythrum hyssopifolia A. Langston 2003-7-9 AL 65 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS112520  Lythrum hyssopifolia D. G. Kelch 2003-6-22 03 .90 Contra Costa Rodeo - Lone Tree Point 2 Comment
  UCD150881  Lythrum hyssopifolia James A. Neilson Jr. 1972-11-2 3617 Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 1 Comment
  UC1619945  Lythrum tribracteatum Barbara Ertter, Brad Olson 1991-9-28 10834 Contra Costa San Pablo Reservoir between Orinda and El Sobrante; dried mud flats at S end of reservoir 91 Comment
  UC697172  Madia elegans Mary L. Bowerman 1933-5-17 2106 Contra Costa Curry Canyon brance s of Olafsons' barn Mount Diablo 289 Comment
  CAS-BOT-BC342680  Madia elegans Mary L. Bowerman 1933-5-17 2106 Contra Costa Mount Diablo. Curry Canyon branch south of Olafsons' barn 289 Comment
  JEPS99498  Madia elegans Mary Bowerman 1979-5-12 Contra Costa Mount Diablo. North Peak trail between Devil's Pulpit & Prospectors Gap. Comment
  UC1819036  Madia exigua Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14246 Contra Costa South side Mount Diablo, Sloan Road between Curry Point and Curry Canyon, roadside in partial shade of oak forest on north-facing slope. 487 Comment
  JEPS84508  Madia gracilis Jack Stratford 1981-5-18 Contra Costa Huckleberry Trail Huckleberry Botanic Regional Preserve Comment
  UC2028314  Madia gracilis Barbara Ertter, Susan D'Alcamo 1998-6-12 16162 Contra Costa Summit Road to top of Mount Diablo. Comment
  CAS-BOT-BC324488  Madia radiata K. Brandegee 1908-4-9 50 Contra Costa Near Antioch Comment
  UC89535  Madia radiata unknown April 1889 Contra Costa near Antioch Comment
  CAS-BOT-BC343581  Madia sativa David D. Keck 1941-6-5 5313 Contra Costa Berkeley Hills, Fish Creek Road, 1/4 mi. W. of east portal of Broadway Tunnel 335 Comment
  UC2027950  Malacothamnus fasciculatus Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17516 Contra Costa South side Mount Diablo, Pioneer Horse Camp. Comment
  CAS-BOT-BC206332  Malacothamnus fremontii John Thomas Howell; T. H. Kearney 1950-7-5 26635 Contra Costa Hills above Nortonville. Comment
  UC18798  Malacothamnus fremontii Edw. L. Greene 1892-6-20 Contra Costa Mt. Diablo Comment
  UC961415  Malacothamnus fremontii John Thomas Howell and T. H. Kearney 1950-7-5 26635 Contra Costa Nortonville Comment
  UC1280806  Malacothamnus hallii H. E. McMinn and E. Maino 1931-4-11 123 Contra Costa Mount Diablo Comment
  UC692619  Malacothamnus hallii Mary L. Bowerman 1936-8-25 3534 Contra Costa n upper farm (on Cowell Cement property.); Mount Diablo, west side Lime Ridge 137 Comment
  SEINET10680800 Image available Malacothamnus hallii Harvey M. Hall 1916-5-30 Hall 301 Contra Costa Mt. Diablo. On the westerly side north of Pine Canon, Upper Sonoran Zone. Growing on stony south slope, associated with Artemisia californica, Salvia mellifera, Mimulus glutinosus, and Lofus glaber, and with thickets of Adenostoma fasciculatum near by. 275 Comment
  JEPS99508  Malacothrix clevelandii Mary Bowerman 1978-5-14 Contra Costa Mount Diablo. Old wagon trail to mine on E face of Eagle Peak. Comment
  CAS-BOT-BC345453  Malacothrix coulteri Alice Eastwood 1914-3-14 3816 Contra Costa Byron Springs Comment
  JEPS36614  Malacothrix coulteri R. F. Hoover 1935-3-10 382 Contra Costa Kirker Pass Comment
  UC133355  Malacothrix floccifera Alice Eastwood 1897-5-31 Contra Costa Mount Diablo Comment
  JEPS111546  Malva nicaeensis D. G. Kelch 2005-3-13 05 .47 Contra Costa Crockett - weedy area under Zampa Bridge 4 Comment
  UC1795778  Malva parviflora Barbara Ertter, Mary Bowerman 1995-6-11 14248 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, at west base Mt. Diablo.; annual grassland near Indian Valley School entrance, clay soil (planted Clarkia also present). 91 Comment
  UC2062656  Malva pseudolavatera Barbara Ertter with Delia Taylor 2003-6-22 18230 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, corporate yard for park headquarters on E side Somerville Road. Comment
  UCD116680  Malva sylvestris Herbert L. Mason 1952-6-10 s.n. Contra Costa Waste land near Dwinelle Hall, University of California, Berkeley. Comment
  RSA0004204  Malvastrum hallii H. M. Hall, F. M. Essig 1916-5-30 10131 Contra Costa Mt. Diablo, westerly side north of Pine Canon. 275 Comment
  UCD150880  Malvella leprosa James A. Neilson Jr. 1972-11-2 3618 Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 1 Comment
  JEPS42516  Marah fabacea W. L. Jepson 1922-5-11 9648 Contra Costa North Berkeley Hills Comment
  SEINET8551076  Marah fabacea R. R. Halse 1988-2-20 3540 Contra Costa Along Marsh Creek Road, in the Dark Canyon area, 4 miles W of its junction with Deer Valley Road, near 13980 Marsh Creek Road, Clayton.. 156 Comment
  CHSC23343  Matricaria discoidea Willis Ball 1975-3-26 507 Contra Costa Contra Loma Regional Park. In area #1. All around the restroom facilities at s end of lake. 30 Comment
  JEPS99957  Matricaria discoidea G. Smick 2003-3-27 GAS 91 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC348046  Matricaria discoidea R. E. Frenkel 1963-12-4 305 Contra Costa In walnut orchard on Marsh Creek Road, west of Sellers Road Comment
  CAS-BOT-BC348257  Matricaria occidentalis R. E. Frenkel 1964-4-8 419 Contra Costa Bixler Marsh Comment
  RSA195482  Medicago arabica C. R. Gunn 1963-5-31 2659 Contra Costa Contra Cost County: Tilden Park, Berkeley at intersection of Shasta and Oak Hill Roads Comment
  JEPS25127  Melica californica G. Thomas Robbins 1959-4-18 3994 Contra Costa near and n Pt. Richmond (along Western Drive, at the w base of Potrero Hills); Richmond, Potrero Hills 7 Comment
  UC53671  Melica californica J. Burtt Davy Apr 7 1895-Apr 8 1895 928 Contra Costa Antioch Comment
  UC606736  Melica californica Edward Lee 1936-4-19 1957 Contra Costa ne shore Red Rock; San Francisco Bay Comment
  UC692466  Melica californica Mary L. Bowerman 1933-5-9 2037 Contra Costa hillside e Pioneer Camp; Mount Diablo Comment
  UCD87188  Melica californica G. Thomas Robbins 1959-4-18 3994 Contra Costa At the western base of Potrero Hills, near and north of Pt. Richmond. Along Western Drive, Richmond. 7 Comment
  UC2028478  Melica californica Barbara Ertter with Richard K. Brummitt 1998-5-6 16102 Contra Costa Point San Pablo west of Richmond, crest of road to yacht harbor Comment
  UC2070611  Melica imperfecta Barbara Ertter with Dan Norris 2001-4-8 17595 Contra Costa Lime Ridge Open Space east of Walnut Creek, draw on north side of main peak (heavily impacted by motorcycle use). Comment
  UC1948967  Melica torreyana William J. Ferlatte, L. Maynard Moe 1970-4-27 1249 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC691167  Melica torreyana Mary L. Bowerman 1935-5-8 2972 Contra Costa Muir Area 1036 Comment
  UC691175  Melica torreyana Mary L. Bowerman 1935-5-22 3044 Contra Costa canyon at n end which heads into saddle w of Twin Peaks Eagle Pt Ridge; Mt. Diablo 350 Comment
  UC691224  Melica torreyana Mary L. Bowerman 1933-4-26 1935 a Contra Costa Perkins Canyon branch between the main e ridge of North Peak and ridge to its south (canyon se from North Peak) Mt. Diablo 487 Comment
  JEPS112336  Melilotus indicus Dean G. Kelch and Andrew G. Murdock 2004-5-9 04 .207 Contra Costa Upper Edwards Canyon, Crockett, CA Contra Costa County, CA above Crockett Blvd. Comment
  UC692280  Melilotus indicus Mary L. Bowerman 1931-4-4 637 Contra Costa 2 mi by road from west entrance (= North Gate); Mount Diablo Comment
  UC1950230  Mentzelia affinis Barbara Ertter 1992-3-8 10911 Contra Costa Contra Loma Regional Park; hill ca 1/2 mi SW of reservoir Comment
  UC19628  Mentzelia lindleyi unknown 1125 Contra Costa Hills n Coal Mine; Mt. Diablo Comment
  UC692630  Mentzelia micrantha Mary L. Bowerman 1930-6-10 306 Contra Costa Mount Diablo, Meridian Peak summit Comment
  JEPS111949  Mercurialis ambigua D. G. Kelch 2004-4-3 04 .44 Contra Costa Crockett - Edwards Canyon Rare weed at nursery at Edwards Creek Staging Area (EBRPD) near barn. 24 Comment
Read comments
Jun 14 2011
  CDA23916  Mesembryanthemum nodiflorum D. G. Kelch 2006-7-14 6 .327 Contra Costa Carquinez Strait; Along Marine Vista Ave immmediately west of Pacheco Slough. East of Martinez. Comment
  SBBG2832  Micranthes californica J. M. Tucker 1946-3-24 1389 Contra Costa hills between Nortonville and Somersville Comment
  UCD16073  Microlepia strigosa Glen Holstein 1988-2-12 s. n. Contra Costa California. Contra Costa County: City of Danville. Comment
  CDA33418  Micropus californicus D. G. Kelch 2011-5-28 11 .542 Contra Costa Carquinez Strait Region.; W of Martinez. N of end of Hillside Pl. Comment
  CDA8377  Micropus californicus var. californicus D. G. Kelch, A. G. Murdock 2004-4-3 4 .155 Contra Costa Carquinez Strait Region; Mt. Wanda - Martinez Comment
  JEPS40605  Micropus californicus var. californicus R. F. Hoover 1936-4-16 972 Contra Costa e slope Bald Peak Comment
  JEPS40628  Micropus californicus var. californicus W. L. Jepson 1923-4-22 9878 Contra Costa Mt. Diablo Comment
  JEPS49066  Micropus californicus var. californicus Lewis S. Rose 1966-4-22 66031 Contra Costa n slope of Mt. Diablo; Donner Canyon, Clayton Comment
  RSA721204  Micropus californicus var. californicus Barbara Ertter, Mary Bowerman, et al. 1995-5-7 14050 Contra Costa Three-Springs Trail on NE side of Mt. Diablo SE of Clayton 305 Comment
  CAS-BOT-BC348649  Micropus californicus var. subvestitus John Thomas Howell 1930-4-22 4746 Contra Costa Wildcat Canyon Comment
  JEPS111710  Microseris douglasii subsp. douglasii D. G. Kelch 2004-5-7 04 .189 Contra Costa Canada del Cierbo Canada del Cierbo 40 Comment
  RSA72855B  Microseris douglasii subsp. douglasii A. Kellogg, W. G. W. Harford 1869-4-8 579 Contra Costa Antiock [Antioch] Comment
  UC468893  Microseris douglasii subsp. douglasii M. K. Curran May, 1886 Contra Costa Antioch Comment
  UC691459  Microseris douglasii subsp. douglasii Mary L. Bowerman 1931-4-4 638 Contra Costa 2 mi by road from North Gate (west entrance); Mount Diablo Comment
  UC691463  Microseris douglasii subsp. douglasii Mary L. Bowerman 1931-4-11 698 Contra Costa toward mouth of Pine Canyon; Mount Diablo Comment
  UC1618256  Microseris douglasii subsp. douglasii Barbara Ertter 1991-5-5 9783 Contra Costa along spur road from Black Diamond Trail on ridge se Coal Canyon (s of Pittsburg); Black Diamond Mines Regional Preserve 426 Comment
  CAS-BOT-BC349168  Microseris elegans Alice Eastwood 1914-3-14 3800 Contra Costa Byron Springs Comment
  CAS-BOT-BC349170  Microseris elegans Brandegee No date on label s.n. Contra Costa Byron Hot Springs Comment
  POM53410  Microseris elegans C. F. Baker 1903-4-28 2830 Contra Costa Marsh Creek, Mt. Diablo. Comment
  UC1055920  Mimetanthe pilosa N. Floy Bracelin 1944-9-9 2799 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  UC2027951  Mimulus cardinalis Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17515 Contra Costa South side Mount Diablo, Green Ranch Road at Meridian Springs Creek crossing. Comment
  UC691762  Mimulus grandis Mary L. Bowerman 1930-6-10 294 Contra Costa Mineral Spring (North Road) Mount Diablo Comment
  CHSC22998  Minuartia douglasii Robert A. Schlising 1962-4-26 2187 Contra Costa Coast Ranges. Mount Diablo, at Juniper Campground. Comment
  UC691412  Monardella douglasii Mary L. Bowerman 1930-6-22 369 Contra Costa Mitchell Canyon Trail, above main canyon Mount Diablo Comment
  UC691414  Monardella douglasii Mary L. Bowerman 1935-6-1 3106 Contra Costa second small ridge e Mitchell-Pine divide (bottom of s face); Mount Diablo 975 Comment
  CAS-BOT-BC220511  Monardella villosa A. D. E. Elmer 1903-7-1 4658 Contra Costa Port Costa Comment
  CAS-BOT-BC220512  Monardella villosa John Thomas Howell 1929-7-7 4324 Contra Costa On northern slope near south end of Carquinez Bridge 45 Comment
  CHSC68009  Monardella villosa subsp. villosa James D. Jokerst 1987-6-16 2917 B Contra Costa Livermore Valley, +/- 250 m S of a dirt track. Comment
  UC2028367  Monardella villosa subsp. villosa Barbara Ertter 1998-6-20 16252 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, N-facing slope above Coyote Creek Comment
  CAS-BOT-BC327803  Monolopia gracilens Mary L. Bowerman 1933-5-9 2057 Contra Costa Mt. Diablo, Muir Area, SW slope E of the rocks. Comment
  CAS-BOT-BC327805  Monolopia gracilens Lewis S. Rose 1935-5-16 35166 Contra Costa Mt. Diablo Comment
  UC697149  Monolopia gracilens Mary L. Bowerman 1935-5-8 2973 Contra Costa Muir Area Mount Diablo 1005 Comment
  UC697150  Monolopia gracilens Mary L. Bowerman 1933-5-9 2057 Contra Costa Muir area Mount Diablo (sw slope e of the rocks) Comment
  CHSC23335  Monolopia major Willis Ball 1975-3-2 474 Contra Costa Contra Loma Regional Park. In area #2. On s side of hill ca. 50 yds ne of single restroom at sw end of lake. Approximately half way up the hill. 53 Comment
  JEPS25355  Monolopia major Rimo Bacigalupi with Paul C. Hutchison and John Weiler 1959-3-19 6965 Contra Costa along Camino Diablo 1.9 mi w Byron (at road summit) 54 Comment
  JEPS68951  Monolopia major Edward Lee 1935-3-10 1280 Contra Costa Donovan Road West watershed of Kirker Creek, Kirker Pass (se-facing hillside) Comment
  UC629756  Monolopia major Ethel Crum 1936-4-6 1741 Contra Costa 2 mi w Byron 45 Comment
  CAS-BOT-BC349616  Monolopia major W. W. Carruth 1902-4-1 s.n. Contra Costa Redwood Canon [Canyon], E. Oakland Comment
  POM301038  Monolopia major Mary L. Bowerman 1932-4-27 1365 Contra Costa Mount Diablo: Oyster Ridge, south face: Grassy west-facing slope of ridge west of Riggs Canyon Comment
  POM300988  Montia fontana subsp. variabilis Mary L. Bowerman 1939-3-31 3736 Contra Costa Spring in bend of road to Barbecue Terrace ( off S road). Comment
  CAS-BOT-BC445038  Montia linearis John Thomas Howell 1933-5-14 11226 Contra Costa St. Mary's College Comment
  CAS-BOT-BC83297  Myosurus minimus Peter H. Raven; D. Stone; H. L. Mason; R. Ornduff; et al. 1957-4-4 10583 Contra Costa 3.0 miles south of Byron. Comment
  UC1731499  Myosurus minimus Dean William Taylor 1971-3-28 961 Contra Costa along road J4 3 mi s of Byron (at Holley Road); road J4 at Holley Road 9 Comment
  UC1738113  Myosurus minimus D. E. Stone 1957-3-15 14 -20 Contra Costa 3 mi S of Byron ( on road to Herdlyn) Comment
  UC634927  Myosurus minimus H. L. Mason 1932-3-20 6854 Contra Costa Briones Road Comment
  CAS-BOT-BC83290  Myosurus minimus Herbert L. Mason 1952-4-14 14264 Contra Costa 3.5 miles south of Byron. Comment
  CAS-BOT-BC83300  Myosurus minimus Ira L. Wiggins 1930-4-17 4580 Contra Costa 0.25 mile south of Byron. Comment
  UC1738112  Myosurus minimus subsp. apus D. E. Stone 1955-8-29 14 -8 Contra Costa 3 mi S of Byron (on the road to Herdlyn) Comment
  UC1738114  Myosurus minimus subsp. apus D. E. Stone 1955-8-29 8 -48 Contra Costa 3 mi S of Byron (on the road to Herdlyn) Comment
  UC1738119  Myosurus minimus subsp. apus D. E. Stone 1955-8-29 8 -14 Contra Costa 3 mi S of Byron (on the road to Herdlyn) Comment
  JEPS65190  Myosurus sessilis L. R. Heckard 1971-4-15 2477 Contra Costa S of Byron (intersection of Holey Road) Comment
  OBI72036  Najas guadalupensis Barbara Ertter, Brad Olson 1991-9-28 10838 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  JEPS97506  Nassella cernua Stephen W. Edwards 1999-5-24 Contra Costa Long Ridge, Mount Diablo State Park Comment
  UCD87824  Nassella lepida Beecher Crampton 1956-5-14 3422 Contra Costa 2 miles west of Martinez, on road to Crockett. Comment
  POM301847  Nassella lepida Mary L. Bowerman 1935-5-1 2936 Contra Costa North Road 2 mi from North Gate Comment
  POM300686  Nassella pulchra Mary L. Bowerman 1933-5-25 2191 Contra Costa Alamo Canyon; above Wilson's barn. Oyster Ridge, west end of south face. Comment
Read comments
Nov 1 2011
  CAS-BOT-BC260129  Nassella pulchra Mary L. Bowerman 1933-5-11 2085 Contra Costa Mount Diablo. Inner Black Hills, W of saddle Comment
  CDA32558  Nassella pulchra A. A. Beetle 1941-3-28 1718 Contra Costa Orinda 0 Comment
  SEINET11268203  Nassella pulchra Barbara Ertter, Dan Norris 1998-6-18 16211 Contra Costa South Gate Road on south flank of Mount Diablo, ca 1 mile in from park boundary.; 0 Comment
  UC23481  Navarretia cotulifolia William H. Brewer 1862-5-19 1110 Contra Costa n of Kirker Pass Comment
  UC30207  Navarretia cotulifolia W. H. Brewer 1862-5-19 1110 Contra Costa n of Kirker's Pass Comment
  JEPS105707  Navarretia heterandra David Gowen 2004-5-14 60 Contra Costa Mt. Diablo. North of the road at Curry Point, ca. 1780 ft. elev. Comment
  SEINET12271290  Navarretia mellita J. T. Howell 1938-1 13938 Contra Costa head of Siesta Valley Comment
  UC908171  Navarretia mellita Herbert L. Mason 1945-6-12 12588 Contra Costa se of Mount Diablo (near summit of road up Marsh Creek) Comment
  UC106833  Navarretia pubescens K. Brandegee 1892-6-9 Contra Costa Martinez Comment
  UC2042983  Navarretia pubescens Barbara Ertter with Dan Norris 1998-6-18 16216 Contra Costa Rock City area on south side of Mount Diablo, trail to Artist Point Comment
  UC30208  Navarretia pubescens W. H. Brewer 1862-5-15 1096 Contra Costa Kirker's Pass Comment
  UC691764  Navarretia pubescens Mary L. Bowerman 1932-11-19 1652 Contra Costa Pioneer Camp Mount Diablo Comment
  UCR197895  Navarretia pubescens Beecher Crampton 1949-9-11 493 Contra Costa Mount Diablo State Park, below main road, opposite Oak Knoll Picnic area 518 Comment
  UC2042984  Navarretia pubescens Barbara Ertter with Dan Norris 1998-6-18 16223 Contra Costa Devil's Slide Trail from Knobcone Point Road, south side of Mount Diablo. Comment
  UC2042986  Navarretia pubescens Barbara Ertter with Alan Prather 2003-6-7 18207 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, shortcut between Coyote Trail and Stone Corral Trail. Comment
  UCD35159  Navarretia squarrosa Beecher Crampton 1950-9-22 621 Contra Costa Vacant lot 1 mile north of Richmond. Comment
  UCD36023  Navarretia squarrosa Beecher Crampton 1949-6-5 469 Contra Costa Contra Cost County, along Highway 40, Pinole to San Pablo, above Garrity Creek, on top of West Hills. 30 Comment
  UCD36028  Navarretia squarrosa Beecher Crampton 1949-6-26 474 Contra Costa Contra Cost County, between Pinole and San Pablo, along US Highway 40, above Garrity Creek. 30 Comment
  CAS-BOT-BC7190  Nemophila decumbens M. K. Curran 1883-5-1 s.n. Contra Costa Mt. Diablo Comment
  JEPS111835  Nemophila heterophylla D. G. Kelch 2003-3-21 03 .56 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 40 Comment
  JEPS3141  Nemophila heterophylla Mary L. Bowerman 1930-6-10 308 Contra Costa Meridian Peak Summit , Meridian Peak summit (Mount Diablo) Comment
  UC606890  Nemophila heterophylla L. Constance 1938-3-22 2031 Contra Costa edge Wildcat Canyon n slope Berkeley Hills, edge Wildcat Canyon (n slope of the Berkeley Hills) 365 Comment
  POM289447  Nemophila heterophylla Lyman Benson 1931-3-18 2661 Contra Costa Martinez; Mt Range: South Coast; Watershed: Sacramento River. 91 Comment
  UC480617  Nemophila menziesii Carl Meyer 1928-2-22 284 Contra Costa Mt. Diablo Comment
  UC880892  Nemophila menziesii Lewis S. Rose 1941-3-13 41029 Contra Costa 3 mi w Byron; w of Byron 30 Comment
  UC2027804  Nemophila menziesii var. menziesii Barbara Ertter with Holly Forbes 1997-4-20 15554 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC691708  Nemophila pedunculata Mary L. Bowerman 1932-3-27 1139 Contra Costa below Mitchell Rock (Mount Diablo); , below Mitchell Rock Comment
  UC1619908  Nerium oleander Barbara Ertter, Brad Olson 1993-10-30 12287 Contra Costa w of junction San Pablo Avenue and Vista del Rio w of Crockett ((collapsed section of abandoned blacktop), Carquinez Strait Regional Shoreline); Carquinez Strait Regional Shoreline Comment
  CAS-BOT-BC233455  Nicotiana glauca Ira L. Wiggins 1930-4-18 4604 Contra Costa East end of Jersey Island Comment
  UC1125161  Nicotiana glauca G. T. Nordstrom 1937-10-28 1402 Contra Costa 1.4 mi n Somersville; Mt. Diablo Quad. 91 Comment
  UC1952820  Nicotiana quadrivalvis Barbara Ertter with David Gowen 2010-11-17 20698 Contra Costa Mangini acquisition (Save Mount Diablo) between Lime Ridgeand Mount Zion Comment
  CDA5795  Nicotiana tabacum R. DeBoer 1966-12-2 Contra Costa Golden Gate Fish Co., Point San Pablo, Richmond. 0 Comment
  UC1084399  Nuttallanthus texanus G. Thomas Robbins 1937-4-17 132 Contra Costa near Point Richmond Comment
  CAS-BOT-BC140360  Oemleria cerasiformis Alice Eastwood 1915-5-30 4459 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC235130  Oemleria cerasiformis James R. Shevock 2012-8-12 40657 Contra Costa San Francisco Bay Region. Tilden Regional Park, East Bay Regional Park District. Along Grizzly Peak Trail about midway between the upper and lower trailheads 448 Comment
  RSA128906  Oemleria cerasiformis Peter H. Raven 1950-3-5 1409 Contra Costa Happy Valley Road, 2.8 miles above intersection with Upper Happy Valley road. 244 Comment
  UC1128078  Oemleria cerasiformis N. French 1933-3-13 36 Contra Costa San Pablo Creek San Francisco Quad. (above Sheldon School) 91 Comment
  UCSB26442  Oemleria cerasiformis Keefe, Joseph 1967-3-21 Contra Costa Huckleberry Trail, 0.5 mi. east of Skyline Blvd., near intersection with Grizzly Peak Blvd., east of Berkeley 274 Comment
  CHSC69645  Oenothera deltoides subsp. cognata James D. Jokerst 1988-4-26 3003 Contra Costa Town of Oakly, E and adjacent to Hwy. 4, N of Cypress Rd., between highway and railroad tracks. Comment
  CAS-BOT-BC171593  Oenothera deltoides subsp. howellii James McMurphy 1909-5-23 s.n. Contra Costa Antioch Comment
  RSA34666  Oenothera deltoides subsp. howellii P. A. Munz 1947-10-8 12201 Contra Costa Sand dunes east of Antioch 8 Comment
  UC635385  Oenothera deltoides subsp. howellii H. L. Mason 1929-3-31 5163 Contra Costa Antioch San Joaquin River (sand dike along river) Comment
  UC1952821  Olea europaea Barbara Ertter with David Gowen 2010-11-17 20701 Contra Costa north face of Lime Ridge Open Space (City of Walnut Creek). Comment
  JEPS122909  Orobanche bulbosa Adam C. Schneider 2015-5-22 936 Contra Costa Eagle Peak Trail of Mt. Diablo State Park. Comment
  RSA0059169  Orobanche bulbosa F. T. Bioletti 1894-5-13 11693 Contra Costa Mt. Diablo. Comment
  JEPS10811  Orobanche fasciculata Mary L. Bowerman 1935-5-22 3056 Contra Costa Saddle west of Twin Peaks. Comment
  JEPS127850  Orobanche fasciculata Adam C. Schneider 2014-5-15 553 Contra Costa Mt. Diablo State Park. Above Murchio Gap on Bald Ridge Trail Comment
  UC1076301  Orobanche fasciculata Herbert L. Mason 1926-5-7 2704 Contra Costa Near Summit of Mount Diablo. Comment
  JEPS21355  Orobanche vallicola Ray F. Smith 1956-9-23 Contra Costa n. base Mt. Diablo (Russellmann Park); , Russellmann Park Comment
  UC306775  Orobanche vallicola A. D. E. Elmer Jul 1903 4958 Contra Costa Mount Diablo Comment
  POM15364  Orthocarpus erianthus C. F. Baker 1903-4-27 2792 Contra Costa Byron. Comment
  RSA407982  Orthocarpus purpurascens M. B. Dunkle 1935-4-14 4450 Contra Costa Sycamore Valley. Intermountain. 335 Comment
  UC1094580  Osmorhiza berteroi C. R. Bell 1953-3-27 1407 Contra Costa Berkeley, U.C. campus Comment
  UC1555267  Osmorhiza berteroi R. C. Stebbins 1988-5-25 Contra Costa Memory and Packrat trails Tilden Park, Tilden Nature Area Comment
  CAS-BOT-BC318278  Packera breweri Joseph Whipple Congdon 1896-5-30 s.n. Contra Costa Mt. Diablo. Comment
  RSA722062  Panicum capillare Barbara Ertter, Lincoln Constance 1995-6-16 14262 Contra Costa East edge Dow Marsh on west side Antioch Marina, south side San Joaquin River Comment
  RSA0029056  Panicum capillare Barbara Ertter, Mary L. Bowerman, Lisa Schultheis 1998-8-21 16396 Contra Costa South side of Mount Diablo, South Gate Road 1.1 mi below entry kiosk. 366 Comment
  JEPS103101  Papaver californicum Mary L. Bowerman 1978-5-14 Contra Costa E face of Eagle Peak, ravine toward Twin Peaks from Back Creek Mount Diablo Comment
  RSA721592  Papaver californicum Mary L. Bowerman 1978-5-14 s.n. Contra Costa Mount Diablo. E side of Eagle Peak, old mine wagon trail up Black Canyon. Comment
  CDA9544  Parapholis incurva D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 9 .221 Contra Costa Byron Airport. Comment
  JEPS127671  Parapholis incurva Barbara Ertter with David Gowen and Michael Park 2017-5-2 22801 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS41043  Parapholis incurva L. R. Heckard and R. Bacigalupi 1965-5-11 9068 Contra Costa at bay on n end Brooks Island (sw of Richmond in San Francisco Bay); San Francisco Bay, n end of Brooks Island Comment
  CDA22266  Parietaria judaica D. G. Kelch, A. G. Murdock 2004-4-11 4 .078 Contra Costa Carquinez Strait Region; Crockett - Crolona Heights. 6th Street at Lillian Street. In Crockett. Comment
  UC480619  Pedicularis densiflora Carl Meyer 1928-2-22 290 Contra Costa Mount Diablo Comment
  UCSB12518  Pedicularis densiflora Grah, Nancy 1962-4-14 Contra Costa 1.1 miles on Tappan Lane north of Tarry Lane, Orinda 243 Comment
  RSA123948  Pedicularis densiflora E. F. Sprague 1957-4-11 1124 Contra Costa Mount Diablo. N slope of Live Oak Canyon. 610 Comment
  UCD123307  Pedicularis densiflora Robert C. Bechtel 1952-4-12 54 Contra Costa Mt. Diablo. Comment
  POM118165  Pediomelum californicum H. M. Hall, F. M. Essig, C. C. Hall 1916-5-31 10133 Contra Costa Summit of Mount Diablo. 1170 Comment
  UC399521  Pellaea andromedifolia Ivar Tidestrom June, 1895 Contra Costa Crockett Comment
  UC1618363  Pennisetum villosum Barbara Ertter, Brad Olson 1993-10-30 12290 Contra Costa w of railroad tracks n of mouth of Pinole Creek (along railroad track, San Pablo Regional Shoreline); San Pablo Regional Shoreline Comment
  SEINET12320780  Penstemon centranthifolius Unknown 1980-1 3879 Contra Costa Lime Ridge, N end, S of Ygnacio Valley Rd between Walnut Creek & Concord Comment
  UC1051325  Penstemon hartwegii N. Floy Bracelin 1941-6-15 1402 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  RSA0027922  Penstemon heterophyllus subsp. purdyi Barbara J. Ertter 1998-4-4 15972 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Quarry Hill. Comment
  JEPS7569  Penstemon heterophyllus var. heterophyllus W. L. Jepson 1921-6-16 9315 Contra Costa Mt. Diablo Comment
  NY601704  Penstemon heterophyllus var. heterophyllus W. L. Jepson 1921-6-16 9315 Contra Costa Mount Diablo Comment
  RSA722064  Pentachaeta alsinoides Barbara Ertter, Lisa Schultheis 1995-4-27 14006 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Drive. 122 Comment
  UC697213  Pentachaeta exilis Mary L. Bowerman 1933-5-10 2062 Contra Costa ridge at e end and s of Meridian Flat; Mount Diablo 822 Comment
  JEPS112050  Pentagramma triangularis subsp. triangularis D. G. Kelch 2004-3-12 04 .22 Contra Costa Pinole Valley Hillside and canyon above Wright Road. Off of Pinole Valley Road. Contra Costa County, CA 130 Comment
  UC691890  Perideridia kelloggii Mary L. Bowerman 1938-6-30 3698 Contra Costa Black Oak Flat Mount Diablo (dry streamlet n of chaparral) 762 Comment
  UC692378  Perideridia kelloggii Mary L. Bowerman 1933-4-22 1903 Contra Costa w 1970 point; Mount Diablo, Inner Black Hills Comment
  UCD161764  Persicaria James A. Neilson Jr. 1972-10-22 3505 Contra Costa Walnut Creek drainage at State Highway 4. (Exact location unknown. Coordinates and elevation estimated by label maker.) 1 Comment
  CAS-BOT-BC413499  Persicaria amphibia Walter Knight; I. Knight; J. T. Howell; et al 1978-9-5 3246 Contra Costa Brown's Island. Crooked Slough Comment
  UC2027910  Persicaria maculosa Barbara Ertter 2000-9-30 17530 Contra Costa Diablo Foothills Regional Park, Stage Road in Pine Canyon above dry flood control dam. Comment
  UC691689  Phacelia breweri Mary L. Bowerman 1935-4-26 2898 Contra Costa w Indian Ceremonial Spring; Mount Diablo 1021 Comment
  UCD120274  Phacelia breweri P. B. K. 1916-5-1 s.n. Contra Costa Mt. Diablo. Comment
  CDA33836  Phacelia breweri D. G. Kelch 2010-5-15 10 .118 Contra Costa Mt. Diablo. Trail from Juniper Camp to Deer Flat. 0 Comment
  UC1228237  Phacelia californica Beecher Crampton 1950-4-22 533 Contra Costa along state hwy 4 in pass between Concord Valley and Pittsburg (steep hillside in roadcut) Comment
  UC671750  Phacelia californica Lincoln Constance 1940-3-16 2524 Contra Costa margin of San Francisco Bay Point Richmond 15 Comment
  OBI13844  Phacelia californica G. Thomas Robbins, John Weiler 1959-5-23 4027 Contra Costa On W side of Brooks Island, San Francisco Bay, Richmond Comment
  UC2022567  Phacelia ciliata Lewis S. Rose 1932-3-15 3281 Contra Costa Byron Comment
  JEPS18382  Phacelia ciliata var. ciliata Rimo Bacigalupi with F. Chisaki 1957-3-27 5762 Contra Costa at jnct. of Lone Tree Way and Hillcrest Ave. (road) (about 1/2 mi w of Lone Tree School, 3 1/2 mi se of Antioch) 39 Comment
  UC24322  Phacelia ciliata var. ciliata J. Burtt Davy 1895-4-7 958 Contra Costa Antioch Comment
  UC75117  Phacelia ciliata var. ciliata C. F. Baker 1903-4-26 2904 Contra Costa Byron Comment
  JEPS2024  Phacelia distans W. L. Jepson 1923-4-22 9879 Contra Costa Mt. Diablo Comment
  UC107374  Phacelia distans T. S. Brandegee May 1889 Contra Costa Antioch Comment
  UC1084393  Phacelia distans G. Thomas Robbins 1937-4-25 143 Contra Costa along roadside to summit of Mt. Diablo Comment
  UC24341  Phacelia distans J. Burtt Davy 1895-4-7 917 Contra Costa Antioch Comment
  UC672425  Phacelia distans Herbert L. Mason 1929-3-15 5053 Contra Costa canyon back of Nortonville Comment
  UC691703  Phacelia divaricata Mary L. Bowerman 1935-4-26 2897 Contra Costa w Indian Ceremonial Spring (hillside); Mount Diablo 1021 Comment
  UC672340  Phacelia douglasii Herbert L. Mason 1929-3-31 5161 Contra Costa dunes along river near Antioch; San Joaquin River Comment
  UC691692  Phacelia imbricata subsp. imbricata Mary L. Bowerman 1935-5-22 3046 Contra Costa canyon at n end of ridge which heads into saddle w Twin Peaks; Mount Diablo, Eagle Point Ridge 350 Comment
  UCSB46349  Phacelia nemoralis Hawbecker, M. 1983-5-7 Contra Costa Roadside trail, 2 miles off of Grizzly Peak Road, 7.3 miles north of Marin Ave. 502 Comment
  JEPS111825  Phacelia nemoralis subsp. nemoralis D. G. Kelch 2005-5-1 05 .189 Contra Costa Crockett - Edwards Canyon 150 Comment
  UC691694  Phacelia nemoralis subsp. nemoralis Mary L. Bowerman 1936-5-6 3410 Contra Costa Mitchell Canyon Mount Diablo (by road) 228 Comment
  CAS-BOT-BC154331  Phacelia phacelioides Lewis S. Rose 1932-6-24 32341 Contra Costa Mt. Diablo 1173 Comment
  CAS-BOT-BC154332  Phacelia phacelioides Alice Eastwood 1915-5-30 4520 Contra Costa Near type locality. Mt. Diablo Comment
  UC2028313  Phacelia phacelioides Barbara Ertter, Susan D'Alcamo 1998-6-12 16163 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit. Comment
  JEPS99583  Phacelia rattanii Mary Bowerman 1994-6-19 Contra Costa Mount Diablo, Muir aarea, 10'W of restroom Comment
  JEPS111840  Phacelia tanacetifolia D. G. Kelch 2004-4-3 04 .56 Contra Costa Crockett-Tormey Headlands west of I-80 and Cummings Skyway junction. 75 Comment
  UC881269  Phacelia tanacetifolia Alice Eastwood 1914-3-14 3804 Contra Costa Byron Springs Comment
  JEPS99570  Phacelia tanacetifolia Mary Bowerman 1991-5-21 Contra Costa Comment
  CAS-BOT-BC265960  Phalaris minor Mary L. Bowerman 1933-4-15 1849 Contra Costa Canyon south of Arrroyo del Cerro, Mount Diablo Comment
  SEINET10593167  Phalaris minor John Thomas Howell 1933-5-14 Howell 11234 Contra Costa St. Mary's College Comment
  CDA15237  Phalaris paradoxa G. F. Hrusa, D. Crowe 1998-5-8 14368 Contra Costa Sacramento Delta; Disturbed areas about annual grasslands on Dow Chemical property at Pittsburg. Annual, to 1.5 meters tall. Comment
  UCD89357  Phalaris paradoxa Katharine Brandegee 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  UCD89359  Phalaris paradoxa Katharine Brandegee 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  UCD89368  Phalaris paradoxa Beecher Crampton 1956-5-14 3381 Contra Costa 4.5 miles S of Antioch. Comment
  PASA2099  Pholistoma membranaceum Annetta Carter 1929-3-31 Contra Costa near Clayton Comment
  SD211620  Pholistoma membranaceum Barbara Ertter 1992-3-8 10909 Contra Costa Northeast edge of Black Diamond Mines Regional Preserve, Northeast-heading canyon with steep loose sides circa 1/2 mile West of junctin of Stewartville Trail and Frederickson Lane Comment
  CDA22381  Phoradendron macrophyllum D. G. Kelch, A. G. Murdock 2005-5-13 5 .235 Contra Costa Carquinez Strait Region; Martinez. South of oil refinery along railroad tracks in fragment of habitat. Comment
  JEPS111929  Phoradendron serotinum subsp. tomentosum Dean G. Kelch and Andrew G. Murdock 2003-3-21 DGK 03 .038B Contra Costa Martinez - West: Ozol Rock and Scenic Drive. Comment
  UC521716  Phoradendron villosum Joseph Andorfer Ewan 1933-10-15 8040 Contra Costa s.w. slope Mt. Diablo 1066 Comment
  UC692036  Phoradendron villosum Mary L. Bowerman 1930-6-22 358 Contra Costa on flat above Mitchell Canyon (Mount Diablo); Mount Diablo Comment
  JEPS87911  Phragmites australis Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10707 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers, opposite Pittsburg Marina, near w end of <Browns> Island); Browns Island Comment
  CDA2311  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch. 0 Comment
  UC1789168  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch, single well-established clump at base of river bank. Comment
  UC12452  Physocarpus capitatus J. Burtt Davy 1895-4-4 1000 Contra Costa near Lafayette Comment
  UC1129854  Pickeringia montana var. montana R. W. Lundh 1932-8-27 149 Contra Costa 1 1/2 mi w Cave Point; Mt. Diablo Quadrangle 487 Comment
  JEPS65182  Pilularia americana L. R. Heckard 1971-4-15 2485 Contra Costa s Byron (field at intersection of Holey Rd.) Comment
  CAS-BOT-BC78295  Pinus attenuata John Thomas Howell 1925-9-19 1443 Contra Costa Moraga Ridge, Oakland Hills Comment
  UCD50248  Pinus attenuata Howard Ferris 2004-8-18 s.n. Contra Costa Flicker Ridge, Contra Costa County. 318 Comment
  CAS-BOT-BC78544  Pinus coulteri Elizabeth McClintock 1967-10-22 4 Contra Costa Nortonville area Comment
  JEPS46808  Pinus coulteri W. L. Jepson 1931-4-5 15726 Contra Costa Nortonville Comment
  UC440233  Pinus coulteri Mrs. H. P. Bracelin 1931-3-22 179 Contra Costa Nortonville Comment
  CDA32812  Pinus halepensis D. G. Kelch 2010-11-8 10 .445 Contra Costa Carquinez Strait; W Valona (Crockett). Comment
  UC2028647  Pinus halepensis Barbara Ertter 2001-3-18 17564 Contra Costa Shell Ridge Open Space SW of Walnut Creek, around Muir Reservoir tank at north end of main ridge Comment
  UC1061678  Pinus muricata N. Floy Bracelin 1941-10-19 1713 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC806729  Pinus pinaster Robert E. Burton Contra Costa near Valle Vista (south of Moraga) (n of Redwood road near creek) Comment
  UC400309  Pinus sabiniana unknown 1896-3-29 Contra Costa Mitchell Canyon Mt. Diablo Comment
  UC85462  Pinus sabiniana unknown Contra Costa Mt. Diablo Comment
  UC1200775  Pinus thunbergii L. R. Wright 1960-3-10 Contra Costa near Bryant Reservoir <Briones?>; Orinda Comment
  CDA39511  Piperia elongata D. G. Kelch 2005-6-24 5 .381 Contra Costa Carquinez Strait Region; 5th Street Prairie, Crockett. Comment
  UC1819070  Piptatherum miliaceum Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13940 Contra Costa Mount Diablo State Park, lower end of Mitchell Canyon south of Clayton, on east side of stream not far from trail head. 182 Comment
  JEPS127046  Plagiobothrys Lowell Ahart, Josephine Guardino 2016-4-19 20770 Contra Costa 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. Undesignated section of Canada de Los Vaqueros Land Grant, Byron Hot Springs USGS 7.5' Quad. Comment
  UC1614071  Plagiobothrys Charles M. Belshaw 1935-6-24 780 Contra Costa 1/2 mi e of Grizzly Peak (n face of Bald Peak); Bald Peak Comment
  CAS-BOT-BC227987  Plagiobothrys David D. Keck 1933-4-2 1995 Contra Costa Vasco Road, eastern county, N of Vasco School Comment
  JEPS73694  Plagiobothrys acanthocarpus L. R. Heckard with Wm. Hirano and Ted Niehaus 1968-3-5 1763 Contra Costa along Byron-Bethany road about 3 mi se Byron (at junction of Holey Road, between railroad and hwy) 7 Comment
  UC881329  Plagiobothrys acanthocarpus Lewis S. Rose 1941-3-13 41037 Contra Costa 3 mi s Byron 9 Comment
  UCR265176  Plagiobothrys acanthocarpus Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8117 Contra Costa San Joaquin Valley, Clifton Court Forebay, c. 15 air miles southwest of Stockton 0 Comment
  RSA755523  Plagiobothrys acanthocarpus Barbara Ertter 1992-3-8 10912 Contra Costa Contra Loma Regional Park; vernally wet flat northeast of bend in Frederickson Lane. Comment
  UC1950231  Plagiobothrys acanthocarpus Barbara Ertter 1992-3-8 10911 Contra Costa Contra Loma Regional Park; flat NE of bend in Frederickson Lane Comment
  JEPS111830  Plagiobothrys bracteatus D. G. Kelch 2005-4-15 05 .136 Contra Costa Rodeo Creek 100 ms west of previous site along dirt in road in puddles 100 Comment
  JEPS111845  Plagiobothrys bracteatus D. G. Kelch 2005-3-25 05 .76 Contra Costa Hercules - Carbon Carbon Road near Route 4 50 Comment
  SBBG28847  Plagiobothrys bracteatus J. T. Howell 1933-5-14 11232 Contra Costa St Mary's College Comment
  UC54745  Plagiobothrys bracteatus Jos. Burtt Davy 1900-3-24 6533 Contra Costa Stege Comment
  UC882304  Plagiobothrys bracteatus Joseph Andorfer Ewan 1936-5-24 9698 Contra Costa w slope Bald Peak; San Pablo Ridge Comment
  SEINET12343274  Plagiobothrys bracteatus Ottley 1920-4-25 448 Contra Costa entrance to Mitchell Canon, Mt. Diablo 198 Comment
  UC78032  Plagiobothrys canescens T. S. Brandegee May 1890 Contra Costa Antioch Comment
  UC2070495  Plagiobothrys fulvus Barbara Ertter with Kevin Hintsa et al. 2003-4-20 18150 Contra Costa Diablo Foothills Regional Park on west base of Mount Diablo, south end of trail west edge of Castle Rock Recreation Area. Comment
  CHSC67895  Plagiobothrys humistratus James D. Jokerst 1989-3-29 3066 Contra Costa 0.25 mi S of Byron Hot Springs NE of Livermore. Comment
  UC766406  Plagiobothrys infectivus R. F. Hoover 1941-4-12 4835 Contra Costa 1 mi n Lone Tree Valley Comment
  CHSC106838  Plagiobothrys leptocladus Barbara Ertter; Jim Jokerst, Dave Magney 1989-4-5 8129 Contra Costa SE part of county. Ca 15 air miles SW of Stockton, alkali sink W and adjacent to Clifton Court Forebay. Comment
  UC1073381  Plagiobothrys nothofulvus George B. Rossbach 1955-3-20 465 Contra Costa sw base Mt. Diablo Comment
  UC691404  Plagiobothrys nothofulvus Mary L. Bowerman 1931-4-4 630 Contra Costa 2 mi from Mount Diablo west road (= North Rd.) entrance; Mount Diablo 259 Comment
  JEPS65186  Plagiobothrys stipitatus var. micranthus L. R. Heckard 1971-4-15 2481 Contra Costa s Byron (at intersection of Holey Rd.) Comment
  OBI20600  Plagiobothrys stipitatus var. micranthus Robert F. Hoover 1967-4-28 10513 Contra Costa Byron Hot Springs Comment
  SD4240  Plagiobothrys tenellus T. S. Brandegee May 1888 Contra Costa Antioch Comment
  UC691336  Plagiobothrys tenellus Mary L. Bowerman 1933-5-8 2033 Contra Costa flat n Rock City Camp; Mount Diablo Comment
  JEPS99591  Plagiobothrys trachycarpus Mary Bowerman March 1979 Contra Costa Mount Diablo, Shell Ridge, ca. 3/8 mi. southernly from 884 (ft summit). Near fire road above cattle pond [unreadable] EBRPD-Foothills Reg. Park. 213 Comment
  JEPS111999  Plantago coronopus A. G. Murdock 2004-6-4 318 Contra Costa Pacheco Marsh Salt marsh NE of Waterbird 5 Comment
  RSA0026162  Plantago coronopus Barbara J. Ertter 1990-10-24 9684 Contra Costa Martinez Regional Shoreline on Carquinez Strait. Near arch bridge. Comment
  JEPS37916  Plantago elongata J. T. Howell 1933-3-29 10897 Contra Costa Nortonville Comment
  UC1314969  Plantago elongata R. F. Hoover 1967-4-28 10516 Contra Costa Byron Hot Springs Comment
  UC1745837  Plantago elongata Annetta M. Carter 1935-3-10 752 Contra Costa Kirker Pass, Donovan Rd. to Pittsburg. Comment
  UC723789  Plantago elongata Joseph Andorfer Ewan 1935-3-10 9130 Contra Costa Donovan road, Kirker Pass Kirker Pass Comment
  CDA42163  Plantago erecta D. G. Kelch 2004-4-11 4 .062 Contra Costa Carquinez Strait Region; Crockett ; 5th Street Prarie. Comment
  UC2032844 Image available Plantago erecta Doran, Andrew Scott 2012-3-20 715 Contra Costa Trail down from highest point of Brooks Island. South east part of Island. Comment
  RSA755543  Plantago erecta Barbara J. Ertter, Jim Jokerst, Dave Magney 1989-4-5 8141 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  CDA34274  Plantago lanceolata D. G. Kelch 2009-8-9 9 .558 Contra Costa S of Ozol Rock. Comment
  JEPS111998  Plantago lanceolata A. G. Murdock 2004-5-28 271 Contra Costa Pinole Peak 205 Comment
  CDA37283  Plantago major D. G. Kelch 2011-3-31 11 .076 Contra Costa Carquinez Region; Richmond; Hilltop Lake Park. Comment
  CHSC21614  Plantago major Willis Ball 1975-2-23 434 Contra Costa Contra Loma Regional Park. Small population in area #1 spread out in picnic area ca. 100 yds s of lake. 10 yds n of w end of parking lot. 45 Comment
  UCD124520  Plantago major Malcolm A. Nobs; S. Galen Smith 1949-7-8 947 Contra Costa Otto's Black Bass Resort, 4 miles N of Kingston. Comment
  JEPS40297  Platanus racemosa F. W. Bancroft Oct. 1894 Contra Costa Walnut Creek Comment
  UCD143180  Platanus racemosa Robt. Branstead 1934-3-30 s.n. Contra Costa SW slope of Mt. Diablo. 426 Comment
  UC1328152  Platystemon californicus Olive Dyer April 1938 424 Contra Costa San Pablo Ridge Wildcat Canyon (just over on Orinda side); , Wildcat Canyon Comment
  UC101591  Platystemon californicus Katharine Brandegee 1907-5-5 h Contra Costa between Antioch and Marsh Creek (along a sandy road back of old Coal Mine); between Antioch and Marsh Creek Comment
  UC50152  Platystemon californicus W. H. Brewer 1862-5-15 1095 Contra Costa Kirker's Pass Diablo Mountain (Diablo Mountain); , Kirker's Pass Comment
  CHSC24920  Plectritis ciliosa M. A. Callahan 1976-4-14 13 Contra Costa On west slope ca. 135 m. e of house at 1976 Mohawk Dr. Pleasant Hill. 140 Comment
  UC2027803  Plectritis ciliosa Barbara Ertter with Holly Forbes 1997-4-20 15556 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC691526  Plectritis ciliosa subsp. ciliosa Mary L. Bowerman 1933-4-15 1853 Contra Costa Canyon s of Arroyo del Cerro (Mount Diablo); Mount Diablo Comment
  JEPS111769  Plectritis macrocera D. G. Kelch 2004-4-3 04 .43 Contra Costa Marsh Creek Road cut about 1.5 miles west of Deer Valley Road. Comment
  UC65024  Plectritis macrocera Miss Carlotta Case July, 1904 Contra Costa Muir Station Comment
  POM59719  Plectritis macrocera C. F. Baker 1903-4-28 2813 Contra Costa Mitchell's Canyon, Mt. Diablo. Comment
  UCD90164  Pleuropogon californicus var. californicus P. B. Kennedy 1929-4-21 s.n. Contra Costa Near Concord, corner of Franklin Canyon Road, by Soldier's Monument. Comment
  CAS-BOT-BC260946  Pleuropogon californicus var. californicus Peter Kamb; Francia Chisaki; Galen Smith 1951-4-14 1978 Contra Costa Margins of small pond 0.2 miles south of junction of Highways 4 and 21, 7 miles north of Walnut Creek Comment
  UCD90186  Pleuropogon californicus var. californicus R. Tofsrud 1946-4-1 s.n. Contra Costa Concord airfield. Comment
  UC485228  Pluchea odorata var. odorata H. M. Hall 1916-8-16 10272 Contra Costa Martinez San Francisco Bay Region Comment
  UC1818939  Poa bulbosa Barbara Ertter, Chris Thayer 1995-4-25 13986 Contra Costa Southeast side of Mt. Diablo northeast of Danville; shade of oak forest on Sycamore Creek near junction of path from Knobcone Point Rd. 396 Comment
  CDA946  Poa howellii D. G. Kelch 2006-5-4 6 .127 Contra Costa Carquinez Strait; Vaca Canyon, on North facing road cut/bank along Alhambra Valley Road. Comment
  JEPS99533  Poa howellii Mary L. Bowerman 1979-5-12 Contra Costa Mount Diablo. Prospector's Gap. Trail to North Peak from Devil's elbow. Between Devil's Pulpit and Aug. 1977 burn. 975 Comment
  UCSB12522  Poa pratensis Grah, Nancy 1962-4-14 Contra Costa .2 miles north of Miner Rd. on Sleepy Hollow Lane, Orinda 182 Comment
  CAS-BOT-BC236390  Poa secunda subsp. secunda Mary L. Bowerman 1935-5-3 2960 Contra Costa Mount Diablo. Sloan Road 487 Comment
  UC691169  Poa secunda subsp. secunda Mary L. Bowerman 1933-6-3 2237 Contra Costa summit Meridian Peak (Ransom Point trail); Mt Diablo Comment
  UC691181  Poa secunda subsp. secunda Mary L. Bowerman 1932-4-27 1381 Contra Costa s face Oyster Ridge (canyon w of Riggs Canyon); Mt Diablo 335 Comment
  UC692472  Poa secunda subsp. secunda Mary L. Bowerman 1935-5-18 3028 Contra Costa n of summit parking area Meridian Peak; Mt Diablo 1036 Comment
  RSA0068483  Pogogyne serpylloides Katie Gallagher, Nick Jensen 2014-4-26 192 Contra Costa Las Trampas Regional Wilderness. 396 Comment
  JEPS65184  Pogogyne zizyphoroides L. R. Heckard 1971-4-15 2483 Contra Costa At intersection of Holey Road, South of Byron. Comment
  UC883703  Pogogyne zizyphoroides Lewis S. Rose 1937-4-21 37226 Contra Costa Byron 15 Comment
  CDA23065  Polycarpon tetraphyllum D. G. Kelch, D. A. Weinstein 2008-5-5 8 .091 Contra Costa Carquinez Strait; Richmond. W Chevy s Hill. N parking lot of Hilltop Mall. Comment
  UC691131  Polygonum amphibium Mary L. Bowerman 1935-7-22 3185 Contra Costa Hidden Pond Mount Diablo 518 Comment
  UC692156  Polygonum amphibium Mary L. Bowerman 1935-9-13 3339 Contra Costa Hidden Pond Mount Diablo Comment
  JEPS78621  Polygonum amphibium var. emersum Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3283 Contra Costa Botany Cove Browns Island Comment
  UCD77933  Polygonum argyrocoleon Robert E. Preston 2002-6-26 1890 Contra Costa Ca. 0.75 mi S of Werner, W of Werner Dredger Cut, in field 0 Comment
  JEPS112022  Polygonum hydropiperoides Dean G. Kelch and Andrew G. Murdock 2004-6-6 DGK 04 .228 Contra Costa Martinez - Train Station. Downtown Martinez. Alhambra Creek near bay and railroad Station. Comment
  JEPS106988  Polypodium calirhiza J. Greenhouse with Kevin Hintsa 2004-4-5 5088 Contra Costa Mt. Diablo, Fire Interpretive Trail, Devil's Pulpit 1109 Comment
  JEPS112032  Polypodium calirhiza D. G. Kelch 2004-3-5 04 .4 Contra Costa Martinez - Rankin Open Space Rankin Park, Martinez 68 Comment
  JEPS79492  Polypodium calirhiza Edward Lee with Annetta Carter 1936-1-12 1709 Contra Costa canyon immediately s of Nortonville Comment
  UC1446058  Polypodium calirhiza Alan Smith with Ed Lee 1979-4-25 730 Contra Costa n side Mt. Diablo Peak (trail beyond Devil's Elbow toward saddle between Mt. Diablo and North Peak) 1066 Comment
  UC1614416  Polypodium calirhiza Charles M. Belshaw 1935-12-28 1427 Contra Costa on trail above ranch house Las Trampas Ridge Comment
  CAS-BOT-BC350932  Polypogon Peter Rubtzoff 1968-9-18 5966 Contra Costa North Gate Road, ca. 5 miles northwest of Mt. Diablo State Park north entrance. Comment
  UCD37371  Polypogon interruptus Beecher Crampton 1959-9-3 5454 Contra Costa Contra Costa County, 2 miles north of city of Orinda, Bear Creek, East Bay Municipal Utilities District Project. Comment
  CDA2351  Polypogon monspeliensis A. A. Beetle 1941-6-24 1750 Contra Costa Point Richmond on San Francisco Bay 0 Comment
  CDA32661  Polypogon monspeliensis D. G. Kelch, Andrew G. Murdock 2004-4-26 4 .135 Contra Costa Carquinez Strait Region; Pt. Pinole. Comment
  JEPS100034  Polypogon monspeliensis A. Langston 2003-6-6 AL 36 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1819045  Polypogon monspeliensis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14234 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  JEPS102910  Polystichum Barbara Ertter with Susan D'Alcamo 1998-6-12 16194 Contra Costa E end of Bald Ridge Tail W of Prospectors Gap Mount Diablo Comment
  UC606764  Polystichum munitum Edward Lee 1936-4-19 1983 Contra Costa se slope of island Red Rock; San Francisco Bay Comment
  UC579898  Populus fremontii subsp. fremontii Annetta Carter 1934-3-30 466 Contra Costa Nortonville Comment
  UC846002  Populus fremontii subsp. fremontii Lewis S. Rose 1941-3-13 41028 Contra Costa 7 mi w Byron (Marsh Creek); Marsh Creek Comment
  UC2042775  Potamogeton berchtoldii Barbara Ertter with Lynne Hosley 1992-8-29 11267 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, stock pond near junction of Eagle and Volvon trails at north end of preserve. Comment
  CDA33072  Potamogeton crispus D. G. Kelch 2010-10-5 10 .427 Contra Costa The Delta.; Antioch shoreline. West of Fulton shipyard. Comment
  UC1099893  Potamogeton crispus Malcolm A. Nobs, S. Galen Smith 1949-7-7 939 Contra Costa Webb Island in the Sacramento River Delta; San Joaquin Valley Comment
  RSA755535  Potamogeton diversifolius Barbara Ertter, Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  UC2028534  Potamogeton foliosus Barbara Ertter 2000-9-30 17531 Contra Costa West side Mount Diablo, pond on China Wall Road ca 1/2 mile NW of Macedo Ranch staging area. Comment
  JEPS111056  Potamogeton foliosus var. foliosus Barbara Ertter 2005-8-17 18617 Contra Costa N base of Mount Diablo S of Clayton, small permanent pond NE of Mitchell Canyon parking lot Comment
  CAS-BOT-BC143056  Potentilla anserina subsp. pacifica Walter Knight; J. Dean; B. Mortensen; R. Bensler; B. Atwater 1959-4-13 3361 Contra Costa Botany Cove. Brown's Island Comment
  JEPS46554  Proboscidea G. Thomas Robbins 1959-8-1 4114 Contra Costa roadside berm of frontage road just s Mt. Diablo Blvd. ((about 0.5 mi e of concrete bridge at Charles Hill and about 0.2 mi w of jct. of Hidden Valley Rd.), 2 mi w of Lafayette) 144 Comment
  CAS-BOT-BC158576  Prunus Walter Knight 1965-3-1 s.n. Contra Costa Antioch Dunes Comment
  CDA32038  Prunus angustifolia D. G. Kelch 2006-3-18 6 .107 Contra Costa 2 km N-NW of Orinda Village. NW of corner of San Pablo Dam Rd & Bear Valley Rd. 0 Comment
  JEPS112094  Prunus cerasifera D. G. Kelch 2005-2-28 05 .11 Contra Costa Pinole Valley Near Pinole Valley Road 36 Comment
  UC2027738  Prunus cerasifera Barbara Ertter 1997-2-11 15452 Contra Costa North side of Mount Diablo, Donner Cabin site on Donner Canyon Road. Comment
  UC2027755  Prunus cerasifera Barbara Ertter, Mary Bowerman 1996-11-1 15407 Contra Costa North base of Mount Diablo, lower Donner Creek. Comment
  JEPS99978  Prunus dulcis G. Smick 2003-2-18 GAS 63 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2028141  Prunus dulcis Barbara Ertter 1998-4-4 15974 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Quarry Hill. Comment
  RSA113975  Prunus subcordata Peter H. Raven, H. L Mason, R. Ornduff 1957-4-11 10626 Contra Costa Curry Canyon, four miles south of the Recreation Ground. Comment
  UC1614254  Prunus virginiana var. demissa Charles M. Belshaw 1935-6-10 695 Contra Costa Morgan Territory Road Comment
  UC691146  Prunus virginiana var. demissa Mary L. Bowerman 1933-5-21 2148 a Contra Costa Grape Spring s from Curry Canyon (Mount Diablo); , Grape Spring Comment
  CDA42354  Pseudognaphalium beneolens D. G. Kelch, Vince Guise 2012-7-26 12 .231 Contra Costa Carquinez Strait.; Martinez. Summit of Shady Glen Rd on sandstone outcrop. Comment
  JEPS111729  Pseudognaphalium beneolens D. G. Kelch 2004-7-16 04 .318 Contra Costa Martinez - South Pine St. Entrance to Rte 4 heading west 70 Comment
  UC2046320  Pseudognaphalium beneolens Barbara Ertter 2001-3-18 17569 Contra Costa Shell Ridge Open Space SW of Walnut Creek, east end Ridge Top Trail southwest of Old Borges Ranch. Comment
  JEPS99589  Pseudognaphalium luteoalbum Mary L. Bowerman 1975-9-14 Contra Costa Mount Diablo. Fire road to Frog Pond just W of Mt. Springs Creek bridge. 451 Comment
  UC1795642  Pseudognaphalium luteoalbum Barbara Ertter, Drew Hansen 1995-3-28 13937 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St. edge of levees thru created bioremediation marsh south of Wildcat Creek. Comment
  UC1795643  Pseudognaphalium luteoalbum Barbara Ertter, Drew Hansen 1995-3-28 13938 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St. edge of levees thru created bioremediation marsh south of Wildcat Creek. Comment
  UC1795766  Pseudognaphalium luteoalbum Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14228 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  SBBG103996  Pseudognaphalium microcephalum W. Knight, I. Knight 1977-7-25 Contra Costa Black Diamond Mines Regional Reserve, Nortonville town site 167 Comment
  CAS-BOT-BC357592  Pseudognaphalium stramineum John Thomas Howell 1925-11-7 1556 Contra Costa San Leandro Canyon, Oakland Hills Comment
  UC177448  Psilocarphus oregonus Alice Eastwood 1893-5-5 Contra Costa Brentwood Comment
  UC88451  Psilocarphus oregonus T. S. Brandegee May 1886 Contra Costa Antioch Comment
  CAS-BOT-BC361878  Psilocarphus tenellus John Thomas Howell 1930-4-22 4748 Contra Costa Bald Peak Comment
  POM138622  Ptelea angustifolia Katherine Brandegee 1907-6-16 s.n. Contra Costa Antioch Comment
  RSA138624  Ptelea angustifolia Katherine Brandegee 1907-6-16 137 Contra Costa Antioch Comment
  RSA15420  Ptelea baldwinii subsp. crenulata L. S. Rose 1936-4-24 36147 Contra Costa Marsh Creek. 6 miles E of Clayton. 61 Comment
  UC17377  Ptelea crenulata Ivar Tidestrom Jun 1895 Contra Costa Edwards Canyon Comment
  UC909620  Ptelea crenulata Kay H. Beach 1941-4-30 1080 Contra Costa about 7 mi w Byron (n bank along Marsh Creek); Marsh Creek 30 Comment
  CAS-BOT-BC148620  Ptelea crenulata Ethel Wickes 1917-6-1 s.n. Contra Costa Unspecified Comment
  CAS-BOT-BC148631  Ptelea crenulata John Thomas Howell 1934-4-8 11811 Contra Costa 7 miles from Clayton on road to Livermore Comment
  UC692115  Pteridium aquilinum var. pubescens Mary L. Bowerman 1930-8-24 426 Contra Costa lower trail w of stream Mitchell Canyon; Mt. Diablo 259 Comment
  UC1795763  Pterostegia drymarioides Barbara Ertter, Lisa Schultheis 1995-4-27 14014 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; north-facing open brushy slope with scattered oaks along extension of Valley View road. 182 Comment
  CDA33808  Pterostegia drymarioides D. G. Kelch 2010-5-15 10 .117 Contra Costa Mt. Diablo. Trail from Juniper Camp to Deer Flat. 0 Comment
  RSA0068501  Pterostegia drymarioides Katie Gallagher, Nick Jensen 2014-4-26 173 Contra Costa Las Trampas Regional Wilderness. 365 Comment
  UC1748007  Quercus E. Dean, M. Bowerman, B. Ertter, J. Tucker, J. Kerbavaz 2000-9-13 657 Contra Costa Fossil Ridge, just below and 0.1 mi along fire rd that begins at the parking lot SE of Rock City and climbs onto Fossil Ridge in southeasterly direction Mount Diablo State Park 487 Comment
  UC691313  Quercus X morehus Mary L. Bowerman 1931-3-22 609 Contra Costa between Oyster Point and Cave Point; Mount Diablo Comment
  CAS-BOT-BC104163  Quercus X morehus C. Davies 1919-1 s.n. Contra Costa near Post Office Mills College Comment
  CAS-BOT-BC104165  Quercus X morehus C. Hart Merriam 1919-5-10 s.n. Contra Costa From the hill above Redwood Inn Moraga Valley Comment
  CAS-BOT-BC104167  Quercus X morehus Mary L. Bowerman 1935-10-26 3349 Contra Costa Mount Diablo. 0.1 mile by road above Silver Spring, 50 feet from road 859 Comment
  POM301006  Quercus X morehus Mary L. Bowerman 1935-10-26 3349 Contra Costa 0.1 mile by road above Silver Spring, 50 feet from road. 860 Comment
  CAS-BOT-BC45659  Quercus agrifolia Alice Eastwood 1914-2-24 3733 Contra Costa Antioch Comment
  JEPS37364  Quercus agrifolia W. L. Jepson Oct. 1909 3498 Contra Costa Moraga Ridge Comment
  JEPS37717  Quercus agrifolia W. L. Jepson 1907-4-26 2648 b Contra Costa Mt. Diablo Comment
  UC691325  Quercus agrifolia Mary L. Bowerman 1930-10-25 495 Contra Costa near Sloan Road; Mount Diablo, Inner Black Hills Comment
  UC691303  Quercus berberidifolia Mary L. Bowerman 1931-10-13 1057 Contra Costa Alamo Canyon, by gully running w into creek just s of main ridge Mount Diablo Comment
  UC691318  Quercus berberidifolia Mary L. Bowerman 1933-6-7 2258 Contra Costa North Peak Ridge Mount Diablo 1021 Comment
  UC5520  Quercus chrysolepis J. Burtt Davy 1896-2-28 1265 Contra Costa Mitchell Canyon Mt. Diablo Comment
  CAS-BOT-BC86642  Quercus douglasii Brandegee s.n. Contra Costa unspecified Comment
  UCD57122  Quercus douglasii J. M. Tucker 1946-5-8 s.n. Contra Costa Mt. Diablo, along main road, above main gate. Comment
  CAS-BOT-BC79607  Quercus durata Mary L. Bowerman 1932-10-16 1632 Contra Costa Mount Diablo. Donner Canyon Trail Comment
  UC1135564  Quercus durata R. C. Wilson 1935-3-29 164 Contra Costa 1 mi w Deer Flat; Mount Diablo 685 Comment
  UC1748010  Quercus garryana E. Dean, M. Bowerman, B. Ertter, J. Tucker, J. Kerbavaz 2000-9-13 655 Contra Costa Fossil Ridge, just upslope of South Gate Rd., just W of Gibralter Rock, SE of Rock City Mount Diablo State Park 487 Comment
  UC1748011  Quercus garryana E. Dean, M. Bowerman, B. Ertter, J. Tucker, J. Kerbavaz 2000-9-13 654 Contra Costa Fossil Ridge, just upslope of South Gate Rd., just W of Gibralter Rock, SE of Rock City Mount Diablo State Park 487 Comment
  UCD17420  Quercus garryana E. Dean; M. Bowerman, B. Ertter, J. Tucker, J. Kerbavaz 2000-9-13 656 Contra Costa California. Contra Costa County: Mount Diablo State park, Fossil Ridge, along fire road that begins at the parking lot southeast of Rock City and climbs onto Fossil Ridge in southeasterly direction, ca. 0.1 mile from Rock City, slightly downslope of road. 487 Comment
  CDA23104  Quercus kelloggii D. G. Kelch, D. A. Weinstein 2007-10-11 s.n. Contra Costa Carquinez Strait; Canada de Cierbo, just S of Crockett. Comment
  SBBG92947  Quercus kelloggii W. D. Dress 1951-3-16 Contra Costa NE side of San Pablo Ridge, about 1 mi N of Orinda Comment
  UC691308  Quercus kelloggii Mary L. Bowerman 1931-9-27 1047 Contra Costa n side North Peak (Quicksilver Mine); Mount Diablo Comment
Read comments
Jan 15 2014
  OBI22995  Quercus kelloggii Cathy Peterson 1971-11-6 8 Contra Costa Mount Diablo, south side, approx 35 yds from Rock City entrance 610 Comment
  JEPS99998  Quercus lobata G. Smick 2003-2-18 GAS 64 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC691279  Quercus lobata Mary L. Bowerman 1930-6-22 372 Contra Costa Deer Flat Mount Diablo Comment
  UC1543217  Quercus lobata Donald G. Nelson 1939-12-3 643 Contra Costa along hwy. near where Marsh Creek Hwy. comes into more open hill country Comment
  UC2028571  Quercus palmeri Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15519 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UCD47072  Quercus palmeri J. M. Tucker 1981-5-31 4459 Contra Costa California, Contra Costa County: Antonio Souza Ranch southwest of Byron (extended Section NW quarter Sec. 31, R3E, T1S, Mt. Diablo Meridian). 309 Comment
  RSA0016755  Quercus parvula var. shrevei Ellen Dean, Barbara Ertter, J. M. Tucker, C. Chaney 2000-9-13 650 Contra Costa City of El Sobrante; El Sobrante Ridge, upslope of the terminus of Heavenly Ridge Road, junction of Heavenly Ridge Trail and Manzanita Trail. 213 Comment
  UCR141754  Quercus parvula var. shrevei Ellen Dean, Et al. 2000-9-13 653 Contra Costa City of El Sobrante Ridge, upslope of the terminus of Heavenly Ridge Rd., just south of junction of Heavenly Ridge Trail and Manzanita Trail, along Manzanita Trail 213 Comment
  CAS-BOT-BC104710  Quercus wislizeni Mary L. Bowerman 1930-7-7 287 Contra Costa Mount Diablo. Summit Comment
  JEPS37967  Quercus wislizeni W. L. Jepson 1907-4-26 2647 Contra Costa Mt. Diablo Comment
  UC691292  Quercus wislizeni Mary L. Bowerman 1933-9-30 2448 Contra Costa e end Meridian Flat (e of Pioneer Camp); Mount Diablo Comment
  UC691294  Quercus wislizeni Mary L. Bowerman 1932-1-30 1079 Contra Costa Inner Black Hills, head of ne fork (nw corner of the basin) Mount Diablo 670 Comment
  CAS-BOT-BC104709  Quercus wislizeni Mary L. Bowerman 1930-9-9 454 Contra Costa Mount Diablo. North Peak base, east side Comment
  JEPS96257  Quercus wislizeni var. frutescens Dean Kelch 1995-3-14 97 .13 Contra Costa Mount Diablo, Rock City, e Contra Costa County Rock City; Mount Diablo, Rock City 457 Comment
  UC1606299  Ranunculus aquatilis var. capillaceus Barbara Ertter with Lynne Hosley and Sid Cowles 1992-6-7 11085 Contra Costa pond in quarry e Round Top; Oakland Hills, Sibley Volcanic Regional Preserve Comment
  CAS-BOT-BC379109  Ranunculus aquatilis var. diffusus A. D. E. Elmer 1903-5-1 4318 Contra Costa Mount Diablo Comment
  CAS-BOT-BC379110  Ranunculus aquatilis var. diffusus A. D. E. Elmer 1903-5-1 4318 Contra Costa Mount Diablo Comment
  POM194560  Ranunculus californicus Eugene Memmler 1929-4-21 2377 Contra Costa Moraga Valley Comment
  SEINET13717644  Ranunculus californicus Unknown 1948-2-12 1103 Contra Costa West facing slope along Bear Creek Canyon in Lawson Hill area. Comment
  RSA268401  Ranunculus canus Lyman Benson 1935-3-16 6275 Contra Costa Mitchell Canyon near Clayton; Mt. Range: Mt. Diablo; Watershed: Walnut Creek. 244 Comment
  UC549110  Ranunculus canus Lyman Benson 1931-3-18 2655 Contra Costa Danville South Coast Mt. Range, Sacramento River Watershed, Mt. Diabl (w base of mt.) 213 Comment
  UC13970  Ranunculus canus var. canus Chesnut and Drew 1889-4-17 Contra Costa Clayton Comment
  POM268694  Ranunculus canus var. laetus Jos. Burtt Davy 1895-4-7 925 Contra Costa Antioch Comment
  UC1607964  Ranunculus hebecarpus Donald G. Nelson 1937-4-29 507 Contra Costa Road from Pinole south towards Alhambra Road Pinole Comment
  UC692123  Ranunculus hebecarpus Mary L. Bowerman 1931-3-29 613 Contra Costa Riggs Canyon Mount Diablo Comment
  UC9444  Ranunculus hebecarpus H. N. Bolander 1866-1 Contra Costa Monte Diablo Comment
  CDA23557  Raphanus sativus D. G. Kelch 2008-3-3 8 .03 Contra Costa Carquinez Strait; Crockett. Under Zampa (Carquinez) Bridge. Comment
  CDA4905  Rhamnus alaternus Barbara Ertter, D. Gowen 2006-4-14 18667 Contra Costa Lime Ridge Open Space at northwest base of Mt. Diablo; north side of Ygnacio Valley Road near culvert for major draw at bend in road. 0 Comment
  SEINET13946276 Image available Rhamnus californica Charles M. Belshaw 1425 Contra Costa Sierra Nevada, Las Trampas Ridge; 400 ft alt. 122 Comment
  UC1121873  Rhamnus ilicifolia R. W. Lundh 1932-8-15 127 Contra Costa 1 mi w Round Valley; Mt. Diablo Quad. 228 Comment
  UC1121879  Rhamnus ilicifolia G. T. Nordstrom 1937-11-9 1411 Contra Costa 3.2 mi se Somerville; Mt. Diablo Quad. 198 Comment
  UC692593  Rhamnus tomentella subsp. tomentella Mary L. Bowerman 1932-11-19 1658 Contra Costa Lower Grapevine Spring, at head of spring Mount Diablo Comment
  UC692598  Rhamnus tomentella subsp. tomentella Mary L. Bowerman 1933-5-21 2151 Contra Costa s of Curry Canyon (Grapevine Spring gulley, slightly above the spring); Mount Diablo Comment
  UC466053  Ribes Tracy J. Storer 1912-7-13 Contra Costa Mt. Diablo 914 Comment
  UC75430  Ribes Milo S. Baker 1904-6-24 Contra Costa near summit Mt. Diablo Comment
  SBBG26906  Ribes malvaceum A. Eastwood, J. T. Howell 1936-4-19 Contra Costa Nortonville Comment
  CAS-BOT-BC206016  Ribes menziesii Mary L. Bowerman 1944-6-19 3894 Contra Costa Mount Diablo. Summit Comment
  JEPS111987  Ribes menziesii D. G. Kelch 2005-3-25 05 .80 Contra Costa Fernandez Ranch Fernandez Ranch. West of Christie Road. South of I-4 (behind golf course) and North of Pinole Peak. 150 Comment
  JEPS22439  Ribes menziesii Mary L. Bowerman 1930-6-10 314 Contra Costa summit Mt. Diablo Comment
  SEINET14419467 Image available Ribes menziesii J. Arrigo 1975-3-6 10 Contra Costa Along Marsh Creek Road near Mt. Diablo area. 183 Comment
  UCD102488  Ribes sanguineum Robert L. Rudd; Krutzsch 1947-3-24 17 Contra Costa Wild Cat Canyon. Comment
  SEINET13942922 Image available Ribes victoris Joseph Andorfer Ewan 1936-1 9739 Contra Costa Thickets along Wildcat Creek Comment
  UC1727989  Romulea rosea var. australis Gregg Weber 1998-5-6 Contra Costa San Pablo Ridge trail Comment
  SD103750  Rorippa palustris subsp. glabra Walter Knight, Irja Knight 1979-6-15 3398 Contra Costa Crooked slough, Brown's Island. Comment
  CAS-BOT-BC147408  Rosa californica L. R. Abrams 1916-6-30 5710 Contra Costa Mt. Diablo Comment
  JEPS78620  Rosa californica Walter Knight, L. R. Heckard, and Bert Johnson 1978-9-28 3286 Contra Costa Sandy Knoll Browns Island Comment
  UC136538  Rosa californica Katharine Brandegee 1907-7-4 Contra Costa marsh between Martinez and Port Costa Comment
  UC1789172  Rosa eglanteria Barbara Ertter 2001-11-3 17812 Contra Costa Tilden Regional Park, Selby Trail ca. 1/4 miles north of Lake Anza Comment
  UC2032842  Rubus ursinus Doran, Andrew Scott 2012-3-20 713 Contra Costa North east side of Brooks Island Comment
  CAS-BOT-BC421866  Rumex acetosella Mary L. Bowerman 1935-5-18 3016 Contra Costa Mount Diablo. Road above Indian Ceremonial Spring: Roadbank at hairpin turn. Comment
  JEPS99969  Rumex crispus A. Langston 2003-6-23 AL 55 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UCD101441  Rumex pulcher Rimo Bacigalupi; L. R. Heckard 1965-5-11 9075 Contra Costa On West side of Brooks Island (in San Francisco Bay south-west of Richmond). 6 Comment
  JEPS41049  Rumex salicifolius var. salicifolius Rimo Bacigalupi, and L. R. Heckard 1965-5-11 9074 Contra Costa sw of Richmond (w side of Brooks Island); San Francisco Bay, Brooks Island 6 Comment
  RSA0029279  Rumex salicifolius var. salicifolius Barbara J. Ertter, Tony Morosco 1996-7-27 15030 Contra Costa Mount Diablo State Park, Donner Creek ca. halfway between Regency Drive trailhead and old cabin site. 183 Comment
  UC692209  Rumex salicifolius var. salicifolius Mary L. Bowerman 1935-10-26 3346 Contra Costa 2 rd mi e Mount Diablo west entrance; Mount Diablo 228 Comment
  JEPS65649  Rupertia physodes W. L. Jepson May 23 1891-May 24 1891 13595 Contra Costa Mt. Diablo Comment
  UC1197438  Rupertia physodes Joseph P. Tracy 1934-4-30 13195 Contra Costa near Lafayette 152 Comment
  UC1818945  Sagina apetala Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13943 Contra Costa Mount Diablo State Park, lower end of Mitchell Canyon south of Clayton, oak woodland/grassland open flat area on east side of stream not far from trail head. 182 Comment
  UC2028200  Sagina apetala Barbara Ertter 1998-5-3 16052 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  CDA23458  Salicornia subterminalis R. L. Todd 1962-11-21 Contra Costa Old River Canal bridge. 0 Comment
  CAS-BOT-BC129909  Salix bonplandiana Alice Eastwood 1921-4-18 10305 Contra Costa Antioch Comment
  CAS-BOT-BC129910  Salix bonplandiana Alice Eastwood 1921-4-18 10266 Contra Costa Antioch Comment
  CAS-BOT-BC129921  Salix bonplandiana Barrett Anderson 1987-4-29 3476 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD. 125 Comment
  UC407392  Salix exigua var. hindsiana Ira L. Wiggins 1930-4-18 4587 Contra Costa levee banks Jersey Isl. Comment
  POM181448  Salix gooddingii I. L. Wiggins 1930-4-18 4591 Contra Costa Jersey Island. Comment
  UC407030  Salix gooddingii Ira L. Wiggins 1930-4-18 4603 Contra Costa levees, Jersey Isl. Jersey Isl. Comment
  UC725834  Salix gooddingii A. A. Heller 1908-4-16 8886 Contra Costa Antioch 12 Comment
  CAS-BOT-BC104087  Salix hindsiana Mary L. Bowerman 1935-5-30 3081 Contra Costa By Donner Canyon stream 152 Comment
  CAS-BOT-BC104085  Salix hindsiana Mary L. Bowerman 1936-5-6 3412 a Contra Costa Mitchell Canyon 152 Comment
  CDA34023  Salix laevigata D. G. Kelch 2011-3-31 11 .079 Contra Costa Carquinez Region; Richmond; Hilltop Lake Park. Comment
  JEPS38406  Salix laevigata W. L. Jepson 1899-4-19 140 Contra Costa Moraga Valley Comment
  UC691924  Salix laevigata Mary L. Bowerman 1935-6-1 3119 Contra Costa by rd. just below Silver Springs Grapevine Picnic Grounds; Mt. Diablo 853 Comment
  RSA0030832  Salix laevigata Walter C. Blasdale 1896-2-29 s.n. Contra Costa Clayton. Comment
  UC406991  Salix laevigata var. congesta Ira L. Wiggins 1930-4-18 4601 Contra Costa levee locks Jersey Isl. Comment
  POM300608  Salix lasiolepis Mary L. Bowerman 1933-9-15 2441 Contra Costa Hunt Spring (S face Meridian Peak). Mt Diablo. 762 Comment
  UC692062  Salix lasiolepis Mary L. Bowerman 1933-2-23 1721 Contra Costa Donner Canyon Mount Diablo (w fork toward mouth, by streambed) Comment
  CAS-BOT-BC129553  Salix lasiolepis var. lasiolepis Walter Knight 1965-3-1 899 Contra Costa Antioch dunes, by water's edge - north side of dunes Comment
  CAS-BOT-BC129555  Salix lasiolepis var. lasiolepis Mary L. Bowerman 1932-8-27 1519 Contra Costa Spring south of Turtle Rock (by a large group of willows) - Mount Diablo Comment
  CAS-BOT-BC129557  Salix lasiolepis var. lasiolepis Mary L. Bowerman 1932-2-13 1088 Contra Costa By Alamo Creek (West Branch) - Mount Diablo 289 Comment
  JEPS95226  Salix scouleriana Stephen W. Edwards 1995-10-20 Contra Costa Round Top, W flank Robert Sibley Volcanic Regional Preserve Comment
  JEPS79010  Salsola tragus Edward Lee with Annetta Carter 1935-8-17 1619 Contra Costa just e. Antioch Comment
  JEPS62663  Salvia columbariae Lauramay Tinsley 1927-4-19 Contra Costa Mount Diablo Comment
  SBBG29850  Salvia columbariae L. S. Rose 1935-5-16 Contra Costa Mt Diablo Comment
  JEPS62735  Salvia mellifera W. L. Jepson 1899-4 14949 Contra Costa Las Trampas Ridge Comment
  UC1124790  Salvia mellifera R. W. Lundh 1933-3-25 221 Contra Costa 1 mi w Alamo; Concord Quad. 213 Comment
  UC1124825  Salvia mellifera R. C. Wilson 1935-2-26 106 Contra Costa Mt. Diablo; Mt. Diablo Quad. 426 Comment
  UC32598  Salvia mellifera Chesnut and Drew 1889-4-16 Contra Costa Summerville Comment
  UC883961  Salvia mellifera Lewis S. Rose 1941-3-22 41057 Contra Costa w slope Mt. Diablo 609 Comment
  JEPS12714  Sambucus mexicana Katharine Brandegee 1907-6-16 Contra Costa Antioch Comment
  UC570378  Sambucus mexicana Chas. M. Belshaw 1936-2-16 1593 Contra Costa 2 1/2 mi nne Orinda; Sobrante and Briones Hills, Briones Valley Comment
  UCR16102  Sambucus mexicana Rex Sanders 1973-5-22 s.n. Contra Costa San Francisco Bay Region, El Sobrante, wash crossing Valley View Rd. at corner with Jo-Lin Ct. 45 Comment
  CAS-BOT-BC238635  Sambucus nigra subsp. caerulea Walter Knight 1965-3-1 894 Contra Costa Antioch dunes Comment
  CAS-BOT-BC238633  Sambucus nigra subsp. caerulea Mary L. Bowerman 1930-8-31 452 a Contra Costa Mount Diablo. Sloan Road, Curry Canyon (east of the Sloan Place) Comment
  JEPS13385  Sambucus racemosa var. racemosa Mrs. E. L. Mossman 1931-4-1 93 Contra Costa Wildcat Canyon Berkeley Hills Comment
  RSA471428  Sanicula bipinnata H. de Forest 1930-4-6 s.n. Contra Costa SE of Mortoville, Small coal mine ravine. Comment
  UC1949232  Sanicula bipinnata Barbara Ertter with Michelle Seidl 1992-3-14 10913 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo; along Blue Oak Trail Comment
  JEPS111596  Sanicula bipinnatifida A. G. Murdock 2004-3-19 236 Contra Costa McEwen Road 150 Comment
  JEPS111611  Sanicula bipinnatifida D. G. Kelch 2004-3-5 04 .6 Contra Costa Martinez - Rankin Open Space 56 Comment
  JEPS100130  Sanicula crassicaulis G. Smick 2003-3-3 GAS 62 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2032846  Sanicula crassicaulis Doran, Andrew Scott 2012-3-20 717 Contra Costa Southern part of Brooks Island, old quarry near gravel conveyer belt and grind house. Comment
  UC579860  Sanicula crassicaulis Annetta Carter 1936-4-19 1123 Contra Costa San Francisco Bay, Red Rock Red Rock; San Francisco Bay, Red Rock Comment
  UC2027911  Sanicula crassicaulis Barbara Ertter with Dan Norris 2001-4-8 17577 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  UC2028121  Sanicula crassicaulis Barbara Ertter with Richard K. Brummitt 1998-5-6 16087 Contra Costa Lower Donner Canyon Road on north base of Mount Diablo, ca 1/2 miles south of Donner cabin site. Comment
  JEPS996  Sanicula laciniata W. L. Jepson 1943-4-24 20764 Contra Costa vicinity of San Francisco Bay (Oakland Hills, Moraga Ridge); Oakland Hills, Moraga Ridge Comment
Read comments
Jan 24 2008
  JEPS979  Sanicula saxatilis W. L. Jepson 1921-5-22 9207 Contra Costa Mount Diablo 1170 Comment
  UC2027802  Sanicula tuberosa Barbara Ertter, Holly Forbes 1997-4-20 15557 Contra Costa North side of Mount Diablo, north end of Eagle Peak Ridge on Mitchell Rock Trail between Mitchell Rock and Twin Peaks. Comment
  UC692474  Saxifraga californica Mary L. Bowerman 1931-3-7 554 Contra Costa Mount Diablo, South road below junction Mount Diablo Comment
  RSA771187  Scandix pecten-veneris Barbara Ertter 1991-6-1 10072 Contra Costa Las Trampas Regional Wilderness in hills of Danville, paved portion of Rocky Ridge Trail ca 1 mile from parking lot 488 Comment
  UC1949225  Scandix pecten-veneris Barbara Ertter 1991-6-1 10072 Contra Costa Las Trampas Regional Wilderness in hills W of Danville; Rocky Ridge Trail ca 1 mi from parking lot Comment
  UCD151158  Schedonorus arundinaceus James A. Neilson Jr. 1972-11-2 3552 Contra Costa Walnut Creek drainage at State Highway 4. Elevation estimated using Google Earth by label maker. 1 Comment
  UCD150918  Schinus molle James A. Neilson Jr. 1972-10-27 3620 Contra Costa Clayton, C4. Elevation estimated using Google Earth by label maker. 121 Comment
  CAS-BOT-BC111378  Schoenoplectus acutus var. occidentalis Ira L. Wiggins 1930-4-18 s.n Contra Costa Jersey Island Comment
  UC2070487  Schoenoplectus acutus var. occidentalis Barbara Ertter 2002-11-11 18077 Contra Costa Round Valley Regional Preserve east of Mount Diablo. Comment
  CAS-BOT-BC111830  Schoenoplectus tabernaemontani Virginia I. Dains; Walter Knight 1986-8-8 5458 Contra Costa Lct Rock S1 & Werner Cut. Comment
  UC692193  Scirpus acutus var. occidentalis Mary L. Bowerman 1938-9-17 3715 Contra Costa by the rivulet and in the marsh Big Spring Mount Diablo, Big Spring 731 Comment
  UCD50099  Scirpus californicus B. Crampton 1950-7-29 625 Contra Costa 1 mile north of Richmond, Contra Costa Co. Comment
  JEPS111881  Scirpus maritimus A. G. Murdock 2004-5-28 300 Contra Costa Luzon 60 Comment
  UC584351  Scribneria bolanderi G. L. Stebbins Jr. 1937-5-1 2112 Contra Costa 1 mi s of Summerfield (Summerfield=Somersville, at the head of Walker Canyon; due s of Antioch) Comment
  UC2032823  Scrophularia californica Doran, Andrew Scott 2012-3-20 693 Contra Costa North end of Brooks Island along ridge overlooking artificial spit, southwest of caretakers residence. Comment
  UC1713668  Scutellaria tuberosa unknown 1027 Contra Costa Walnut Creek Comment
  CAS-BOT-BC363290  Senecio aronicoides Alice Eastwood 1922-5-14 11319 Contra Costa Mt. Diablo Comment
  JEPS111705  Senecio aronicoides D. G. Kelch 2004-5-2 04 .175 Contra Costa Crockett - Edwards Canyon 112 Comment
  OBI75155  Senecio aronicoides David J. Keil 2011-5-29 31036 Contra Costa Mount Diablo State Park. Vicinity of Juniper Campground 900 Comment
  JEPS79322  Senecio flaccidus var. douglasii Edward Lee with Annetta Carter 1935-8-17 1634 Contra Costa Antioch Comment
  JEPS79323  Senecio flaccidus var. douglasii Edward Lee with Annetta Carter 1935-8-17 1634 Contra Costa Antioch Comment
  JEPS37189  Senecio hydrophilus W. L. Jepson 1923-9-13 10210 Contra Costa n of Cerrito Creek; Berkeley Hills Comment
  CDA18812  Senecio mikanioides R. M. Case 1999-12-2 PDR 1219291 Contra Costa Along Wildcat Canyon Rd., 1.9 mi NW of intersection of Wildcat Canyon Rd. and Dam Rd., vicinity of Orinda. 0 Comment
  UC691362  Senecio sylvaticus Mary L. Bowerman 1933-5-25 2180 Contra Costa w end s face Oyster Ridge (Mount Diablo); , , w end of s face, in burned chapa 396 Comment
  JEPS37191  Senecio vulgaris W. L. Jepson 1921-5-22 9200 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC364554  Senecio vulgaris Walter Knight 1965-3-1 911 Contra Costa Antioch dunes Comment
  POM181456  Senecio vulgaris Ira L. Higgins 1930-4-18 4597 Contra Costa Levee, n. end of Jersey Island. Comment
  JEPS48264  Sequoia sempervirens K. D. Jones 1908-4-5 Contra Costa Redwood Peak Comment
  NY64466  Sequoia sempervirens L. S. Rose 1934-1-29 34009 Contra Costa Redwood Canyon Comment
Read comments
Apr 14 2010
  UC1050201  Sequoia sempervirens N. Floy Bracelin 1942-12-13 1712 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  HSC2615  Sequoia sempervirens D. A. Shally 1965-4-18 35 Contra Costa Canyon at Canyon Store Comment
  SEINET3561292 Image available Sequoia sempervirens Lewis S. Rose 1934-1-29 34009 Contra Costa Redwood Canyon. Comment
  CDA25239  Sherardia arvensis D. G. Kelch, D. A. Weinstein 2008-4-15 8 .044 Contra Costa Carquinez Strait; S Port Costa along Mckewen Rd. Comment
  CHSC116634  Sherardia arvensis Lowell Ahart; Josephine Guardino 2016-4-19 20802 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along the sides of the dirt roads, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  JEPS99539  Silene gallica Mary L. Bowerman 1976-6-24 Contra Costa Mount Diablo, Fire trail from crest of Inner Black Hills to Sycamore Creek. Comment
  UC692654  Silene gallica Mary L. Bowerman 1931-4-4 636 Contra Costa two mi by road from North Gate (Mount Diablo); , two mi from North Gate Comment
  UC691376  Silybum marianum Mary L. Bowerman 1930-6-3 233 Contra Costa West Road 1.9 mi from entrance Mount Diablo (= North Road); Mount Diablo Comment
  CAS-BOT-BC74934  Sinapis arvensis Ira L. Wiggins 1930-4-18 4611 Contra Costa Jersey Island. Comment
  CAS-BOT-BC74935  Sinapis arvensis Ira L. Wiggins 1930-4-18 4611 Contra Costa Jersey Island. Comment
  CHSC21619  Sinapis arvensis Willis Ball 1974-4-21 427 Contra Costa Contra Loma Regional Park. In island in center of main parking lot at s end of lake. 36 Comment
  UCD115424  Sinapis arvensis R. Koch 1996-4-20 2 Contra Costa city of Danville, free space by Mt. Diablo State Park. 121 Comment
  SFV1416  Sinapis arvensis L. B. Hendrix 1962-4-22 21 Contra Costa Walnut Creek, Sun Valley Drive. Comment
  UC2070554  Sinapis arvensis Barbara Ertter 2002-6-22 17963 Contra Costa Clayton Oak Road near Rialto Road, east of Donner Canyon at north base of Mount Diablo. Comment
  JEPS100078  Sisymbrium officinale G. Smick 2003-5-30 GAS 207 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS100079  Sisymbrium officinale A. Langston 2003-6-19 AL 48 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS112431  Sisyrinchium bellum A. G. Murdock 2004-3-19 220 Contra Costa Luzon Sycamore Ave. just east of Rodeo/Hercules where train crosses Highway 4 (Luzon). Top of ridge to south of road. 60 Comment
  SEINET12047240  Sisyrinchium bellum C. C. Getzinger 1964-1 23 Contra Costa Richmond, Arlington Blvd. at Patterson Circle 30 Comment
  JEPS125629  Sium suave Daniel Slakey with CNPS Volunteers 2015-9-12 228 Contra Costa Central part of large slough that runs north-south through Browns Island; east side of slough. Comment
  CDA39383  Smilacina racemosa A. G. Murdock 2004-4-3 245 Contra Costa Vaca Canyon. Comment
  UC691994  Smilacina racemosa Mary L. Bowerman 1931-5-23 897 Contra Costa Alamo Canyon Mount Diablo (e fork, upper end, not far from saddle) Comment
  UC905261  Smilacina racemosa J. A. Rattenbury 1948-5-11 114 Contra Costa 1/2 mi e Oakland Tunnel (on s side of hwy above creek) 243 Comment
  UC2028463  Solanum americanum Barbara Ertter with Mary Bowerman 1996-11-1 15395 Contra Costa North base of Mount Diablo, downstream from Mitchell Canyon parking lot Comment
  CDA14345  Solanum aviculare R. Fonseca 1995-4-27 s.n. Contra Costa 1373 Elizabeth Court, Walnut Creek. 0 Comment
  CAS-BOT-BC314195  Solanum californicum M. Boone 1981-4-19 020 Contra Costa Mt. Diablo State Park along roadside ca. 3 miles up on N. Gate Rd. Comment
  NY751923  Solanum californicum D. D. Keck 1933-11-2 2619 Contra Costa 1 mi. S.E. of Oakley. Comment
  CAS-BOT-BC157453  Solanum umbelliferum A. Eastwood 1915-5-30 4541 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC157455  Solanum umbelliferum J. T. Howell 1933-5-14 11291 Contra Costa Hills east of St. Mary's College Comment
  JEPS100154  Solanum umbelliferum G. Smick 2003-3-13 GAS 68 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2031456  Solanum umbelliferum Barbara Ertter with David Gowen 2014-4-9 21708 Contra Costa West end of Green Ranch Road southwest of Mount Diablo summit Comment
  RSA181413  Solanum umbelliferum James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  RSA427350  Solanum umbelliferum H. de Forest 1930-4-6 s.n. Contra Costa S.E. of Mortonville. Small coal mine ravine. 244 Comment
  UC26241  Solanum umbelliferum unknown 1900-3-26 Contra Costa Oakley Comment
  UC1199320  Solidago velutina subsp. californica Joseph P. Tracy 1932-9-10 10788 Contra Costa e Pinole (head of Franklin Canyon); North Coast Ranges, head of Franklin Canyon 152 Comment
  CAS-BOT-BC365985  Sonchus asper John Thomas Howell 1933-5-14 11248 Contra Costa Hills east of St. Mary's College Comment
  UC691791  Sonchus asper Mary L. Bowerman 1938-5-28 3642 Contra Costa North Road 6.5 mi from North Gate (Mount Diablo on bank by roadside (where Boulevard Spring used to be)); Mount Diablo Comment
  UC2028175  Sonchus asper subsp. asper Barbara Ertter 1998-5-3 16044 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. Comment
  CHSC23344  Sonchus oleraceus Willis Ball 1975-3-2 468 Contra Costa Contra Loma Regional Park. In area #5. On the w side of a hill in area #5 ca. 10 yds. e of water on e side of lake. 32 Comment
  UC1948948  Sonchus oleraceus William J. Ferlatte, L. Maynard Moe 1970-4-27 1222 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC1618378  Sorghum bicolor Barbara Ertter, Brad Olson 1993-10-30 12291 Contra Costa w of railroad tracks n of mouth of Pinole Creek (along railroad track, San Pablo Regional Shoreline); San Pablo Regional Shoreline Comment
  UC2032829  Spergula arvensis Doran, Andrew Scott 2012-3-20 699 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  UCSB61645  Spergularia macrotheca Ertter, Barbara; Jokerst, Jim; Magney, David 1989-4-5 Contra Costa SE Contra Costa CO.; alkali sink W and adjacent to Clifton Court Forebay, ca. 15 air miles SW of Stockton, T1S R3E Sec. 24 SESW, near sea level Comment
  CDA24126  Spergularia macrotheca var. longistyla D. G. Kelch 1992-3-21 1828 -A Contra Costa 2.5 mi. SE of Byron; along RR tracks, N of junction of Holey Rd. and Byron Hwy. 0 Comment
  JEPS111787  Spergularia macrotheca var. macrotheca D. G. Kelch 2005-3-24 05 .48 Contra Costa Point Pinole Pt. Pinole near wharf 2 Comment
  UC1618134  Spergularia macrotheca var. macrotheca Barbara Ertter 1994-6-18 12836 Contra Costa at se corner of Whittell Marsh (at n end of Richmond, Point Pinole Regional Shoreline); Richmond, Point Pinole Regional Shoreline Comment
  UC1948956  Spergularia macrotheca var. macrotheca William J. Ferlatte, L. Maynard Moe 1970-4-27 1265 Contra Costa San Francisco Bay: Red Rock Island Comment
  CDA15279  Spergularia marina G. F. Hrusa, D. Crowe, R. York 1998-7-17 14717 Contra Costa Sacramento Delta; E end of Dow Chemical property at Pittsburg. Comment
  CDA24135  Spergularia marina D. G. Kelch 2006-7-14 6 .328 Contra Costa Carquinez Strait; Along Marine Vista Ave immmediately west of Pacheco Slough. East of Martinez. Comment
  UC1563860  Spergularia marina Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8135 Contra Costa alkali sink w and adjacent to Clifton Court Forebay (ca 15 air mi sw of Stockton) 0 Comment
  JEPS100086  Spergularia rubra A. Langston 2003-9-16 AL 87 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1818936  Spergularia rubra Barbara Ertter, Mary Bowerman et al. 1995-5-7 14043 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, damp road bed, clayey, in grassy flat south of pond, near edge of blue oak forest. Comment
  UC1618132  Spergularia villosa Barbara Ertter, Brad Olson 1994-5-7 12747 Contra Costa s end of Point Molate Beach Park w of Richmond (n of bridge to San Rafael, San Francisco Bay, along old railroad grade); San Francisco Bay, Point Molate Beach Park Comment
  UC1948952  Spergularia villosa William J. Ferlatte, L. Maynard Moe 1970-4-27 1258 Contra Costa San Francisco Bay: Red Rock Island Comment
  POM215114  Stachys ajugoides J. T. Howell 1932-10-16 10818 Contra Costa Near San Ramon. Comment
  UC691718  Stachys ajugoides var. rigida Mary L. Bowerman 1938-5-28 3637 Contra Costa 4.7 mi from North Gate (North Road, on w-facing bank between road and chaparral); Mount Diablo 457 Comment
  POM312580  Stachys albens Malcolm A. Nobs, S. Galen Smith 1949-7-8 943 Contra Costa Otto s Black Bass Resort, 4 miles north of Kingston. Comment
  UC2055620  Stachys pycnantha Joseph Andorfer Ewan 1933-10-15 8043 Contra Costa Mt. Diablo 1066 Comment
  UC2055621  Stachys pycnantha Joseph Andorfer Ewan 1933-10-15 8043 Contra Costa Mt. Diablo. 1066 Comment
  UC691661  Stachys pycnantha Mary L. Bowerman 1930-6-28 402 Contra Costa Lower Silver Spring Mount Diablo. Comment
  UC407394  Stellaria media Ira L. Wiggins 1930-4-18 4598 Contra Costa n end Jersey Island Comment
  CDA33818  Stellaria nitens D. G. Kelch, Abigail Moore, Michael Park, Troy 2010-5-15 10 .114 Contra Costa Mt. Diablo. Trail from Prospector s Gap to Lower Summit parking lot. 0 Comment
  UC1328148  Stellaria nitens Olive Dyer 1937-4-18 290 Contra Costa abandoned road up Madrone Canyon tributary (Wildcat Canyon); Wildcat Canyon Comment
  UC2028464  Stenotaphrum secundatum Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15669 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait Comment
  CDA144  Stephanomeria exigua D. G. Kelch, D. A. Weinstein 2007-8-26 7 .553 Contra Costa Carquinez Strait; Ozol Rock, W Martinez. Comment
  CAS-BOT-BC375767  Stephanomeria virgata Lewis S. Rose 1938-10-28 38308 Contra Costa Marsh Creek, 6 mi. e. of Clayton 152 Comment
  UCD150892  Stephanomeria virgata James A. Neilson Jr.; Samuel A Bamberg 1975-10-22 3492 Contra Costa Walnut Creek drainage at State Highway 4. Elevation estimated using Google Earth by label maker. 1 Comment
  JEPS75541  Stephanomeria virgata subsp. pleurocarpa P. F. Yorks 1974-8-10 365 Contra Costa ca 1.7 km s Bear Creek Road (n of Briones Reservoir, on Hampton Road in Hampton Road Natural Reserve); Hampton Road Natural Reserve 180 Comment
  UC1070309  Stephanomeria virgata subsp. pleurocarpa H. S. Yates 1934-9-2 4066 Contra Costa 1 mi sw Mt. Diablo; Mt. Diablo Quad. 762 Comment
  JEPS127235  Stipa pulchra Lowell Ahart, Josephine Guardino 2016-4-19 20793 Contra Costa 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest to Stockton. Undesignated section of Canada de Los Vaqueros Land Grant, Byron Hot Springs USGS 7.5' Quad. Comment
  SD34503  Stipa pulchra A. A. Beetle 1941-3-28 1718 Contra Costa Orinda, in sandy soil of open cut Comment
  UC691055  Streptanthus albidus subsp. peramoenus Mary L. Bowerman 1935-6-15 3136 Contra Costa e 2632 (w exposure); Mount Diablo, Eagle Point Ridge 762 Comment
  CAS-BOT-BC87097  Streptanthus glandulosus subsp. glandulosus John Thomas Howell 1942-5-24 16965 Contra Costa Near Deer Flat, Mount Diablo. Comment
  UC2028978  Streptanthus glandulosus subsp. glandulosus Barbara Ertter 2000-5-14 17020 Contra Costa Donner Basin on north side of Mount Diablo, switchbacks on Cardinet Oaks Road. Comment
  CAS-BOT-BC87335  Streptanthus hispidus H. L. Mason 1938-5-3 11751 Contra Costa Mount Diablo. Trail between Juniper Camp and Deer Flat. 990 Comment
  CAS-BOT-BC87344  Streptanthus hispidus Mary L. Bowerman 1930-6-7 280 Contra Costa Mount Diablo. Meridian Peak summit. Comment
  CAS-BOT-BC87345  Streptanthus hispidus Mrs. E. C. Sutliffe 1920-5-30 s.n. Contra Costa Mount Diablo. Comment
  UC592151  Streptanthus hispidus H. L. Mason 1929-3-29 5120 Contra Costa Mount Diablo 762 Comment
  UC630664  Streptanthus hispidus John L. Morrison and Lincoln Constance 1938-5-5 3027 Contra Costa along Deer Flat trail ca 1/8 mi n Juniper Camp (steep n-facing talus slope); Mt. Diablo Comment
  UC956587  Streptanthus hispidus Freed W. Hoffman 1949-4-17 2766 Contra Costa e side Eagle Peak (near summit); Mt. Diablo 725 Comment
  UC338175  Streptanthus tortuosus unknown Contra Costa Mount Diablo Comment
Read comments
Jul 6 2020
  RSA755542  Stuckenia pectinata Barbara Ertter, Brad Olson 1993-8-8 12202 Contra Costa Bishop Ranch Regional Open Space southwest of San Ramon Comment
  CAS-BOT-BC422913  Stylomecon heterophylla Alice Eastwood 1914-3-14 3770 Contra Costa Byron Springs Comment
  CAS-BOT-BC422917  Stylomecon heterophylla Volney Rattan 1879-1-1 s.n. Contra Costa Antioch Comment
  UC614558  Stylomecon heterophylla L. Constance, J. L. Morrison 1938-4-5 2193 Contra Costa nw base Mount Diablo (6 mi se of Walnut Creek); Coast Ranges, nw base of Mount Diablo Comment
  RSA217241  Stylomecon heterophylla D. E. Breedlove 1970-4-18 17430 Contra Costa At the north edge of Lafayette above Laurel Drive 244 Comment
  UC407387  Suaeda moquinii Ira L. Wiggins 1930-4-17 4585 Contra Costa Byron Hot Springs Comment
  LA204633  Symphoricarpos albus J. A. Ewan; 1936-5-3 9500 Contra Costa Wildcat Creek Comment
  UC416573  Symphoricarpos albus var. laevigatus Tracy I. Storer 1912-7-13 Contra Costa 2 mi sw Walnut Creek Comment
  UCD80966  Symphoricarpos albus var. laevigatus Chuck Hughes 2008-7-10 49 Contra Costa Marsh Creek at County Jail on Marsh Creek Road. 179 Comment
  UC1076414  Symphoricarpos albus var. laevigatus Herbert L. Mason 1924-11-23 1158 Contra Costa Cashion Comment
  JEPS111768  Symphoricarpos mollis D. G. Kelch 2004-3-12 04 .33 Contra Costa Pinole Valley Hillside and canyon above Wright Road. Off of Pinole Valley Road. Contra Costa County, CA 220 Comment
  UC1076412  Symphoricarpos mollis Herbert L. Mason 1929-5-7 5264 Contra Costa Moraga Ridge Comment
  UC691622  Symphoricarpos mollis Mary L. Bowerman 1933-5-21 2159 Contra Costa ridge between two forks Sulphur Springs Canyon; Mount Diablo 426 Comment
  CAS-BOT-BC97701  Symphyotrichum chilense Walter Knight; Joanne Dean 1978-8-14 3140 Contra Costa Browns Island Comment
  UC2046321  Symphyotrichum lanceolatum var. hesperium Barbara Ertter 2000-10-26 17550 Contra Costa West side Mount Diablo, Little Pine Creek near park boundary, just upstream from Falcon Road creek crossing. Comment
  CAS-BOT-BC98039  Symphyotrichum lentum L. R. Abrams 1917-9-24 6860 Contra Costa Near Concord Comment
  UC1555363  Symphyotrichum lentum Jerry Powell 1988-9-28 1548 Contra Costa Point Molate West Richmond Comment
  UCD136614  Symphyotrichum lentum Ann F. Johnson 1978-6-25 AN- 33 Contra Costa Edge of the San Joaquin River at the Antioch Dunes on Pacific Gas and Electric Co. site. Comment
  SEINET3145883  Symphyotrichum subulatum L. S. Rose 1938-10-28 38312 Contra Costa Byron 3 Comment
  UC1606281  Symphyotrichum subulatum Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10868 Contra Costa Dow Wetlands Preserve, just W of Antioch marina; along levee at water's edge, accessed from marina. Comment
  CAS-BOT-BC98331  Symphyotrichum subulatum var. parviflorum Walter Knight 1978-8-27 3196 Contra Costa Contra Loma Regional Park, at reservoir's edge. Comment
  JEPS102017  Taeniatherum caput-medusae Bob Case 2001-10-2 Contra Costa Diablo Foothills Regional Park N of entrance to Castle Rock Recreation Area on W side of Castle Rock Road, just S of power line, mouth of Pine Canyon Comment
  HSC6267  Taraxacum officinale Greg Bos 1963-3-9 38 Contra Costa 5712 San Jose Ave. Richmond 61 Comment
  UC2062659  Tetrapteron graciliflorum Barbara Ertter with Chris Thayer 2002-4-13 17829 Contra Costa North side of Mount Diablo. Comment
  CAS-BOT-BC88262  Thysanocarpus curvipes Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mount Diablo. Comment
  SBBG29915  Thysanocarpus curvipes L. S. Rose 1933-4-17 33096 Contra Costa Antioch Comment
  UC857530  Thysanocarpus curvipes Lewis S. Rose 1941-3-27 41066 Contra Costa 2 mi w Byron 60 Comment
  CAS-BOT-BC88247  Thysanocarpus curvipes Alice Eastwood 1914-2-24 3738 Contra Costa Anticoch. Comment
  CAS-BOT-BC88255  Thysanocarpus curvipes John Thomas Howell 1934-4-8 11822 Contra Costa Marsh Creek Road southwest of Brentwood. Comment
  CAS-BOT-BC66947  Thysanocarpus laciniatus Alice Eastwood 1915-5-30 4553 Contra Costa Mount Diablo. Comment
  SEINET3166335  Thysanocarpus laciniatus P. J. Alexander, C. D. Bailey 2009-3-30 968 Contra Costa Mount Diablo State Park, 0.3 miles east of the summit of Mt. Diablo on the trail to North Peak, 8.7 miles ESE of central Walnut Creek. 1006 Comment
  UC11040  Thysanocarpus laciniatus W. H. Brewer 1862-5-14 1097 Contra Costa Mount Diablo, Eagle Peak Comment
  JEPS108228  Tonella tenella David Gowen 2005-5-6 284 Contra Costa Mt. Diablo State Park. Moist gravelly area ca 1/4 mile south of Prospectors Gap on North Peak Trail. Comment
  JEPS63917  Toxicodendron diversilobum W. L. Jepson 1894-9-7 13913 Contra Costa Bald Peak near Berkeley; Bald Peak Comment
  UC17924  Toxicodendron diversilobum W. H. Brewer 1862-5-10 1068 Contra Costa near Clayton Clayton Comment
  CDA8354  Tragopogon porrifolius D. G. Kelch, A. G. Murdock 2003-4-1 03 .093-B Contra Costa Carquinez Strait; Crockett. E bound entrance to Carquinez Bridge. Comment
  CDA4740  Tribulus terrestris T. C. Fuller 1961-9-13 6999 Contra Costa South of Highway 4, 0.1 miles west of Antioch Bridge Road, 2 miles west of Oakley. 0 Comment
  JEPS112044  Trientalis latifolia A. G. Murdock 2004-4-30 264 Contra Costa Vaca Canyon 165 Comment
  UC555621  Trifolium albopurpureum H. L. Mason 1929-3-29 5130 Contra Costa 2 mi above Clyton Rd (Marsh Creek Rd) Comment
  UC147749  Trifolium albopurpureum var. dichotomum Ivar Tidestrom 1895-4-13 Contra Costa near Lafayette Comment
  UC16500  Trifolium albopurpureum var. dichotomum W. H. Brewer 1862-5-16 1114 Contra Costa n Kirker's Pass Comment
  RSA691925  Trifolium bifidum var. decipiens Barbara Ertter, Chris Thayer 1993-5-7 11714 Contra Costa Ca 1/2 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. Grazing land on lower slopes S of Wildcat Canyon Road. Comment
  CHSC116655  Trifolium campestre Lowell Ahart; Josephine Guardino 2016-4-19 20755 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along the sides of the dirt roads, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  UC555456  Trifolium ciliolatum H. L. Mason 1929-4-25 5204 Contra Costa Marsh Creek Rd Comment
  UC692252  Trifolium ciliolatum Mary L. Bowerman 1932-5-6 1422 Contra Costa Mitchell Canyon Mount Diablo Comment
  RSA0068498  Trifolium ciliolatum Katie Gallagher, Nick Jensen 2014-4-26 176 Contra Costa Las Trampas Regional Wilderness. 365 Comment
  UC165565  Trifolium depauperatum var. amplectens Ivar Tidestrom 1895-4-13 Contra Costa near Lafayette Comment
  UC630976  Trifolium depauperatum var. amplectens unknown 1928-4-19 10043 Contra Costa near Golf Links; Byron Hot Springs Comment
  UC630925  Trifolium depauperatum var. depauperatum P. B. Kennedy 1928-4-19 10035 b Contra Costa Byron Comment
  UCD108372  Trifolium depauperatum var. depauperatum P. B. Kennedy Date Unknown s.n. Contra Costa Vicinity of Bryon Springs, Greene. Comment
  CHSC22680  Trifolium depauperatum var. truncatum Robert A. Schlising 1962-4-7 2147 Contra Costa Along roads near Antioch Reservoir. Comment
  UC165577  Trifolium depauperatum var. truncatum J. Burtt Davy 1895-1 938 Contra Costa Antioch Comment
  UCD108394  Trifolium depauperatum var. truncatum P. B. Kennedy 1929-4-21 10227 Contra Costa Franklin Canyon Road from Concord Soldier's Monument. Comment
  POM18457  Trifolium dichotomum C. F. Baker 1903-4-27 2797 Contra Costa Byron. Comment
  CDA29487  Trifolium dubium D. G. Kelch, Troy MacGregor 2009-5-1 9 .282 Contra Costa Carquinez Strait; Fernandez Ranch in valley bottom along Christie Rd. Comment
  JEPS65864  Trifolium fucatum W. L. Jepson 1896-5-29 13720 Contra Costa Wild Cat Creek Berkeley Comment
  UC16512  Trifolium fucatum W. H. Brewer 1862-5-1 1040 Contra Costa s Camp 69; Walnut Creek Comment
  UC692316  Trifolium fucatum Mary L. Bowerman 1932-3-23 1124 Contra Costa betw Monument and Concord (Oak Grove School junction); Mount Diablo Comment
  UC631617  Trifolium fucatum P. B. Kennedy 1928-4-28 10094 Contra Costa 2 mi from Tunnel (on hwy) Comment
  UCD109022  Trifolium fucatum P. B. Kennedy 1929-4-21 10229 Contra Costa Franklin Canyon Road from Concord Soldier's Monument. Comment
  UCD109123  Trifolium fucatum P. B. Kennedy 1928-4-28 10097 Contra Costa 2 miles from Tunnel, along highway. Comment
  CDA27956  Trifolium gracilentum D. G. Kelch, A. G. Murdock 2005-4-2 5 .106 Contra Costa Carquinez Strait Region; Alhambra Valley. EBMUD land. North of intersection of Alhambra Valley Road and Castro Ranch Road. Comment
  UC1614108  Trifolium gracilentum Charles M. Belshaw 1935-6-24 791 Contra Costa ca. 1/2 mi. e. Grizzly Peak (Bald Peak); Bald Peak Comment
  UC1618357  Trifolium gracilentum Barbara Ertter, Chris Thayer 1993-5-7 11712 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District Comment
  UC33592  Trifolium gracilentum J. P. Tracy 1900-3-24 622 Contra Costa Point Richmond 15 Comment
  UC400157  Trifolium gracilentum Ynes Mexia 1929-4-21 2375 Contra Costa Moraga Valley Comment
  UC555448  Trifolium gracilentum H. L. Mason 1929-3-31 5150 Contra Costa along San Joaquin River; Antioch Comment
  SEINET12147995  Trifolium gracilentum H. M. Hall 1901-1 1734 Contra Costa Region of San Francisco Bay. Mt. Diablo 671 Comment
  UC1197238  Trifolium macraei J. P. Tracy 1900-3-24 623 Contra Costa 50 ft Point Richmond Comment
  UC33580  Trifolium macraei J. P. Tracy 1902-4-24 1399 Contra Costa U. C. Campus Berkeley hills 91 Comment
  UC1130084  Trifolium microdon C. M. Belshaw 1936-5-7 2043 Contra Costa 2 mi s San Ramon; Mt. Diablo quadrangle 274 Comment
  UC692254  Trifolium microdon Mary L. Bowerman 1935-5-1 2933 Contra Costa 2 mi from entrance (West Road (=North Road)); Mount Diablo, West Road (=North Road) 182 Comment
  POM300711  Trifolium obtusiflorum Mary L. Bowerman 1930-6-28 396 Contra Costa Lower Silver Spring Comment
  JEPS100109  Trifolium oliganthum G. Smick 2003-3-25 GAS 85 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CDA31874  Trifolium oliganthum D. G. Kelch 2008-4-6 8 .034 Contra Costa Black Diamond Mines Regional Park. Near small picnic area between parking lot and mine entrance. 0 Comment
  UC2028087  Trifolium oliganthum Barbara Ertter, Tony Morosco 1998-4-12 15984 Contra Costa Base of Mount Olympia on north side of Mount Diablo, south side of lower end of Olympia Trail. Comment
  UC2070437  Trifolium oliganthum Barbara Ertter with Dan Norris 2001-4-8 17592 Contra Costa Lime Ridge Open Space east of Walnut Creek, path northwest of summit installation. Comment
  RSA721202  Trifolium olivaceum var. olivaceum Barbara Ertter 1995-5-29 14225 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 airmile north of Curry Point 488 Comment
  CDA31447  Trifolium repens D. G. Kelch 2006-8-12 6 .378 Contra Costa Carquinez Strait; Martinez. Along Alhambra Creek near train station. Comment
  UC2028957  Trifolium tomentosum Barbara Ertter 2002-5-8 17832 Contra Costa Richmond Field Station. Comment
  UC692680  Trifolium variegatum var. melananthum Mary L. Bowerman 1932-3-23 1126 Contra Costa betw Monument and Concord (Oak Grove School junction); Mount Diablo Comment
  JEPS100108  Trifolium willdenovii G. Smick 2003-3-25 GAS 81 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1130132  Trifolium willdenovii C. M. Belshaw 1936-4-8 2071 Contra Costa 2.25 mi e Clayton; Mt. Diablo quad 381 Comment
  UC725897  Trifolium willdenovii A. A. Heller 1938-4-9 15017 Contra Costa 3 mi sw Antioch (from type region) Comment
  UC867018  Trifolium willdenovii Alice Eastwood 1915-5-30 4467 Contra Costa Mt. Diablo Comment
  UCD109865  Trifolium willdenovii Jo Nixon 1951-5-6 19 Contra Costa Green Ranch, Mt. Diablo. 609 Comment
  UC16819  Trifolium wormskioldii W. L. Jepson 1891-5-23 Contra Costa Mt. Diablo Comment
  UC2028570  Triglochin scilloides Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15518 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC13818  Trillium ovatum E. L. Drew 1888-2-22 Contra Costa Moraga Valley Comment
  SEINET10275395  Trillium ovatum Unknown 1963-4-28 94 Contra Costa Steep north slope about 50 ft above canyon bottom opposite Flicker Ridge 1/4 mi w of Moraga Way, E of Oakland; elev 550 ft.. 167 Comment
  JEPS11780  Triodanis biflora Mary L. Bowerman 1933-5-18 2130 Contra Costa w Blackberry Spring (Mount Diablo); , w of Blackberry Spring Comment
  JEPS10670  Triphysaria eriantha subsp. eriantha R. F. Hoover 1938-2-27 2783 Contra Costa Danville Comment
  JEPS15155  Triphysaria pusilla C. M. Belshaw 1936-5-7 2046 Contra Costa 2 mi s San Ramon; Mt. Diablo Quad. Comment
  JEPS23260  Triphysaria pusilla G. Thomas Robbins 1959-4-26 4004 Contra Costa about 1/4 mi n San Pablo Oil Tank Farm (open slope about 1 mi ne of Giant) 15 Comment
  UC691571  Triphysaria pusilla Mary L. Bowerman 1931-3-29 615 Contra Costa foot of Cave Point Ridge Mount Diablo; , foot of Cave Point Ridge Comment
  UC2027806  Triteleia hyacinthina Barbara Ertter with Holly Forbes 1997-4-20 15543 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  JEPS58040  Triteleia laxa W. L. Jepson 1923-4-22 9856 Contra Costa vicinity San Francisco; Mt. Diablo Comment
  UC130929  Triteleia laxa Katharine Brandegee 1909-4-24 Contra Costa Antioch Comment
  CAS-BOT-BC526329  Triteleia laxa D. E. Breedlove 1930-6-3 234 Contra Costa North Road, Mount Diablo 167 Comment
  UCSB829  Triteleia laxa Hand, B. 1960-4-10 Contra Costa 1.8 miles from south gate on Mt. Diablo road, Mt. Diablo Comment
  CAS-BOT-BC67346  Tropidocarpum capparideum Robert F. Hoover 1936-3-19 806 Contra Costa Byron Hot Springs. Comment
  CAS-BOT-BC67348  Tropidocarpum capparideum Robert F. Hoover 1937-4-3 1733 Contra Costa Tracy. Comment
  LA204485  Tropidocarpum capparideum Robert F. Hoover; 1936-3-19 806 Contra Costa Byron Hot Springs Comment
  SBBG27387  Tropidocarpum gracile L. S. Rose 1934-3-21 34066 Contra Costa 6 mi E of Clayton Comment
  UC2070553  Tropidocarpum gracile Barbara Ertter with David Gowen 2006-6-6 18675 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) south of Moraga, on Rocky Ridge Tail. Comment
  UC1241758  Typha domingensis Malcolm A. Nobs 1950-8-20 Contra Costa Nortonville Comment
  UCD94828  Typha domingensis Malcolm A. Nobs 1950-8-20 s.n. Contra Costa Alkaline seep area, water ca. 2 inches deep, Nortonville. Comment
  CAS-BOT-BC91089  Umbellularia californica Mrs. H. C. Cantelow 1937-2-22 s.n. Contra Costa Mount Diablo. Comment
  CHSC22748  Umbellularia californica Robert A. Schlising 1962-2-21 2078 Contra Costa Berkeley-Oakland Hills of westernmost part of county. Comment
  JEPS100055  Umbellularia californica G. Smick 2003-2-20 GAS 47 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS112485  Umbellularia californica D. G. Kelch 2004-3-5 04 .13 Contra Costa Sky Ranch Dutra Fire Road. Franklin Canyon 90 Comment
  RSA446339  Umbellularia californica H. de Forest 1930-3-28 s.n. Contra Costa Slopes of Mt. Diablo. Comment
  JEPS35668  Uropappus lindleyi W. L. Jepson 1931-4-5 15717 Contra Costa Nortonville 457 Comment
  UC691468  Uropappus lindleyi Mary L. Bowerman 1933-5-9 2060 Contra Costa Muir Area , Muir Area (Mount Diablo) Comment
  RSA0029769  Urospermum picroides Barbara Ertter 1990-6-18 9133 Contra Costa Tilden Regional Park, along Nimitz hiking/bicycle trail near Inspiration Point. Comment
  CAS-BOT-BC404064  Urtica dioica subsp. holosericea Mary L. Bowerman 1931-8-29 1032 Contra Costa Mount Diablo. Sheep Camp Spring, by west road Comment
  RSA446066  Urtica dioica subsp. holosericea M. B. Dunkle 1931-7-18 2504 Contra Costa Strawberry Canyon, Berkeley 152 Comment
  CDA34470  Urtica urens D. G. Kelch 2006-2-25 6 .084 Contra Costa Carquinez Strait; Crockett. Edwards Canyon. Comment
  JEPS77020  Vaccinium ovatum Robert M. Lloyd 1963-3-17 2145 Contra Costa 0.5 mi e intersection of Grizzly Peak Road and Skyline Drive (on Skyline (across from 7090 Skyline)) Comment
  UCD118078  Vaccinium ovatum Beecher Crampton 1957-11-20 4650 Contra Costa Border of Alameda county line. East facing slope, between Round and Redwood Regional Parks, Berkeley Hills. Comment
  POM312406  Verbena hastata Malcolm A. Nobs, S. Galen Smith 1949-7-8 942 Contra Costa Otto's Black Bass Resort, 4 miles north of Kingston. Comment
  UC139763  Verbena lasiostachys var. scabrida Katharine Brandegee 1907-7-4 Contra Costa Between Martinez and Port Costa Comment
  UC1819025  Verbena lasiostachys var. scabrida Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14633 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC691535  Verbena lasiostachys var. scabrida Mary L. Bowerman 1930-6-28 393 Contra Costa Lower Silver Spring: Edge of marshy spot. Comment
  UCD17863  Verbesina encelioides subsp. exauriculata Glen Holstein 2000-6-23 s.n. Contra Costa Midway between Brentwood and Oakley on west side of Highway 4. Comment
  JEPS18890  Veronica peregrina subsp. xalapensis Rimo Bacigalupi with G. Thomas Robbins 1956-3-26 5524 Contra Costa 1.2 mi n of junction with Marsh Creek Road ( just n of Briones Valley, along the Deer Valley Road, in territory just s of Antioch,); Deer Valley Road 76 Comment
  UC650440  Veronica peregrina subsp. xalapensis Ira L. Wiggins 1930-4-17 4581 Contra Costa 1/4 mi s of Byron Comment
  POM181452  Veronica peregrina subsp. xalapensis I. L. Wiggins 1930-4-17 4581 Contra Costa 1/4 mi. S. of Byron. Comment
  UC2028187  Veronica peregrina subsp. xalapensis Barbara Ertter 1998-5-3 16056 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC1005955  Viburnum cylindricum N. Floy Bracelin 1945-2-4 2075 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS12699  Viburnum ellipticum Mary L. Bowerman 1933-5-21 2162 Contra Costa s from Curry Canyon (Sycamore Canyon, ridge between two main forks w side); Mount Diablo, Sycamore Canyon 365 Comment
  UC1050716  Viburnum trilobum N. Floy Bracelin August, 1941 1134 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC2070475  Vicia americana Barbara Ertter with Linda Vorobik 2002-4-6 17825 Contra Costa South side of Mount Diablo, ridge east of Curry Point trailhead. Comment
  UCD108768  Vicia americana Helen K. Sharsmith 1962-4-17 4936 Contra Costa Vicinity of Grizzly Peak, Berkeley Hills. 426 Comment
  UC2028140  Vicia americana subsp. americana Barbara Ertter 1998-4-4 15975 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, south of Bramhill Pond. Comment
  UC1130189  Vicia americana var. americana C. M. Belshaw 1936-5-12 2109 Contra Costa 3.7 mi ene Tassajero; Mt. Diablo Quad. 670 Comment
  UC74935  Vicia americana var. americana unknown 1903-4-27 2793 Contra Costa Byron Comment
  JEPS120288  Vicia disperma Barbara Ertter with David Gowen 2012-6-9 21016 Contra Costa lower Vollmer Peak Trail paralleling South Drive, southeastern Tilden Park in Berkeley Hills Comment
  UC1300884  Vicia sativa subsp. nigra Helen K. Sharsmith 1962-4-18 4958 Contra Costa Reliez Valley Road; San Francisco Bay Region 152 Comment
  UC2028201  Vicia sativa subsp. sativa Barbara Ertter 1998-5-3 16051 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC1300882  Vicia villosa subsp. varia Helen K. Sharsmith 1962-4-18 4946 Contra Costa road above Carquinez Straits (Crockett-Martinez road); San Francisco Bay Region 60 Comment
  UCD108659  Vicia villosa subsp. varia Helen K. Sharsmith 1962-4-18 4946 Contra Costa Crockett-Martinez road above Carquinez Straits. 60 Comment
  JEPS111633  Vinca major D. G. Kelch 2005-5-13 05 .255 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Area along Vista Road ~ 2.5 kiloms West of Martinez 45 Comment
  UC1121614  Viola pedunculata R. C. Wilson 1935-3-29 147 Contra Costa 1/2 mi s of Cave Pit 548 Comment
  UC581518  Viola pedunculata A. E. Borell 1928-4-8 153 Contra Costa Mount Diablo Comment
  UC19340  Viola purpurea subsp. quercetorum</