Search Results — 2000 specimen records retrieved (1406 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  OBI7573  Abies bracteata Robert F. Hoover 1964-4-5 8664 Contra Costa Cultivated in Tilden Park botanic Garden Comment
  UC1187354  Abies bracteata Rimo Bacigalupi 1960-4-4 7360 Contra Costa w slopes of upper Wildcat Canyon ((on short side of road toi corporation yard)); Tilean Regional Park, Berkeley Hills 297 Comment
Read comments
1
  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
  UC12000  Acaena pinnatifida var. californica H. M. Hall 1901-3-16 1655 Contra Costa Point Richmond Region of San Francisco Bay, Point Richmond Comment
  UC1050843  Acanthus mollis var. latifolius N. Floy Bracelin 1942-6-14 2133 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CAS-BOT-BC331612  Acer macrophyllum Paul F. Covel 1940-4-21 s.n. Contra Costa Las Trampas Canyon Comment
  JEPS42648  Acer macrophyllum W. L. Jepson 1916-10-28 6853 a Contra Costa Las Trampas Creek Comment
  UC692719  Acer macrophyllum Mary L. Bowerman 1931-3-21 605 Contra Costa Sycamore Canyon Mount Diablo, Sycamore Canyon Comment
  UC1050118  Acer macrophyllum N. Floy Bracelin 1942-3-15 1967 Contra Costa Adelante, Tthe Garden of Anson and Anita Blake, Berkeley, California Comment
  SBBG27295  Acer negundo A. Carter 1937-4-4 1229 Contra Costa Moraga Valley, 2.5 mi N of Moraga 182 Comment
  POM247253  Acer negundo subsp. californicum Annetta Carter 1937-4-4 1229 Contra Costa Moraga Valley, 2 1/2 miles north of Moraga 183 Comment
  CAS-BOT-BC334185  Acer negundo var. californicum Alice Eastwood 1914-2-24 3734 Contra Costa Antioch Comment
  LA210535  Acer negundo var. californicum Annetta M. Carter; 1937-3-28 1227 Contra Costa Moraga Valley, 2.5 mi N of Moraga. 182 Comment
  UC1050367  Acer palmatum N. Floy Bracelin 1942-7-4 2183 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CDA310  Achillea millefolium D. G. Kelch, A. G. Murdock 2003-8-13 3 .102 Contra Costa Carquinez Strait Region; Martinez Marsh. Comment
  UC1301055  Achillea millefolium Helen K. Sharsmith 1962-4-18 4942 Contra Costa Crockett-Martinez road above Carquinez Straits; San Francisco Bay Region 60 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
  UC691544  Achyrachaena mollis Mary L. Bowerman 1931-3-29 627 Contra Costa Cave Point Ridge Comment
  UC75304  Achyrachaena mollis C. F. Baker 1903-4-27 2795 Contra Costa Byron Comment
  UC29283  Achyrachaena mollis J. Burtt Davy May 13 1893-Jan 1 1900 766 Contra Costa Comment
  JEPS112353  Acmispon glaber Dean G. Kelch and Andrew G. Murdock 2004-4-3 04 .054 Contra Costa Crockett - Tormey Headlands, County: Contra Costa; Road cut west of I-80 and Cummings Skyway junction. Comment
  UCD104481  Acmispon wrangelianus Rimo Bacigalupi; G. T. Robbins 1956-5-11 5639 Contra Costa Between State Highway no. 4 (Franklin Canyon Road) and Santa Fe Ry. Right of way, 1/4 mile east of jnct. Of this rd. with U.S. 40, 1.3 miles east of Pinole. 22 Comment
  UCD104491  Acmispon wrangelianus Morris Halperin 1929-4-21 s.n. Contra Costa Moraga Valley. Comment
  CAS-BOT-BC133154  Adenostoma fasciculatum Mrs. Brandegee s.n. Contra Costa Antioch Comment
  CAS-BOT-BC65622  Adiantum jordanii D. E. Breedlove 1970-4-18 17432 Contra Costa at the north edge of Lafayette above Laurel Drive 243 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
  JEPS112048  Adiantum jordanii D. G. Kelch 2005-1-21 05 .6 Contra Costa Crockett - West Valona Collected along railroad tracks in West Valona across from the decommissioned sewage treatment plant. On north-facing slopes with Quercus agrifolia and Heteromeles arbulifolia and Pinus pinea 8 Comment
  JEPS112052  Adiantum jordanii A. G. Murdock 2004-2-12 206 Contra Costa Franklin Canyon - McHarry Ranch Rd 126 Comment
  UC1795709  Agoseris apargioides var. apargioides Barbara Ertter, Lincoln Constance 1995-6-16 14259 Contra Costa Alameda/Contra Costa county line. Skyline serpentine grassland in Redwood Regional Park (east of old HQ on Skyline Rd.). Comment
  UC1125464  Agoseris grandiflora var. grandiflora C. M. Belshaw 1936-5-12 2102 Contra Costa 2 mi ese of Mt. Diablo; Mt. Diablo Quadrangle 335 Comment
  UC400161  Agoseris grandiflora var. grandiflora Ynes Mexia 1929-4-21 2370 Contra Costa in open fields of grass Moraga Valley Comment
  UC691458  Agoseris grandiflora var. grandiflora Mary L. Bowerman 1935-5-30 3086 Contra Costa Eagle Point Ridge Mount Diablo, Eagle Point Ridge 274 Comment
  CAS-BOT-BC22972  Agoseris heterophylla Alice Eastwood 1915-5-30 4472 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC22973  Agoseris heterophylla Mary L. Bowerman 1933-5-8 2013 Contra Costa Mt. Diablo. Fossil Ridge near crest, north side by side road. Comment
  UC29360  Agoseris heterophylla var. heterophylla F. T. Bioletti 1894-5-13 Contra Costa Mt. Diablo Comment
  RSA0029681  Agrostis avenacea Barbara Ertter, Tony Morosco 1998-9-18 16425 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, north quarry area [subsequently developed]. 122 Comment
  CAS-BOT-BC127338  Agrostis exarata Walter Knight; et al 1978-9-5 3206 Contra Costa Browns Island. Sandy Knoll. Comment
  RSA0033846  Agrostis exarata Barbara Ertter 1999-7-17 16763 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road. Comment
  CAS-BOT-BC127339  Agrostis exarata Mary L. Bowerman 1932-11-12 1647 Contra Costa Mount Diablo. Canyon Spring. 1005 Comment
  UC2028527  Agrostis exarata Barbara Ertter 1997-11-1 15884 Contra Costa South side Mount Diablo, end of spur road east of Knobcone Point, below powerline crossing at head of Alamo Creek drainage. 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
  RSA0027413  Agrostis stolonifera Barbara Ertter, Richard K. Rabeler, Tony Morosco 1997-6-10 15670 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait. Comment
  UC579859  Aira caryophyllea Annetta Carter 1936-4-19 1122 Contra Costa Red Rock San Francisco Bay (e side of island) Comment
  UC692389  Aira caryophyllea Mary L. Bowerman 1942-5-24 3844 Contra Costa Lower Rock City Camp Mount Diablo, Fossil Ridge 457 Comment
  UCD37582  Aira caryophyllea Beecher Crampton 1955-4-11 2471 Contra Costa Contra Costa County, city of Richmond, vacant lot at 42nd Street and Bissell Road. Comment
  RSA0027712  Aira caryophyllea Barbara Ertter, Richard K. Brummitt 1998-5-6 16105 Contra Costa Point San Pablo west of Richmond, crest of road to yacht harbor. Comment
  UC692094  Alisma plantago-aquatica Mary L. Bowerman 1933-9-9 2429 Contra Costa Frog Pond Mount Diablo Comment
  UCR197913  Alisma triviale Beecher Crampton 1950-6-10 589 Contra Costa 1 mile north of Richmond, along Santa Fe Railroad 15 Comment
  POM300645  Alisma triviale Mary L. Bowerman 1933-9-9 2429 Contra Costa Frog Pond. Mt Diablo. Comment
  CAS-BOT-BC175364  Allenrolfea occidentalis Alice Eastwood 1927-5-19 14435 Contra Costa Byron Springs Comment
  RSA107394  Allenrolfea occidentalis L. S. Rose 1955-9-12 55173 Contra Costa 2 miles E of Byron. 15 Comment
  UC116546  Allenrolfea occidentalis K. Brandegee Oct. 1887 Contra Costa Antioch Comment
  RSA367058  Allium amplectens Mark Morris 1929-03 14928 Contra Costa Mt. Diablo. Comment
  JEPS112489  Allium neapolitanum D. G. Kelch 2004-4-11 04 .73 Contra Costa Crockett - Crolona Heights Hillside above Rolf Drive. Lower Crolona heights 15 Comment
  JEPS95266  Allium paniculatum var. paniculatum Doris E. Baltzo 1999-7-20 Contra Costa 2092 Ahneita Drive, Pleasant Hill Comment
  JEPS56381  Allium serra W. L. Jepson 1921-5-22 9198 Contra Costa Mt. Diablo 762 Comment
  UC13800  Allium serra Chesnut and Drew 1889-4-15 Contra Costa Martinez Comment
  UC1481549  Allium unifolium Neil Havlik 1980-5-16 919 Contra Costa e Little Farm; Tilden Regional Park Comment
  CAS-BOT-BC476606  Allium unifolium Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mt. Diablo Comment
  CAS-BOT-BC476607  Allium unifolium John Thomas Howell 1931-5-12 6469 Contra Costa Oakland Hills Comment
  SEINET7881741 Image available Allocarya stipitata H. S. Reed 1940-1 355 Contra Costa Marsh Creek road, Mount Diablo, altitude 800 feet. 244 Comment
  UCD118009  Allophyllum divaricatum P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. Comment
  UC34816  Alnus rhombifolia W. C. Blasdale 1896-2-29 Contra Costa Clayton Comment
  UC692033  Alnus rhombifolia Mary L. Bowerman 1930-8-24 421 Contra Costa Mitchell Canyon Mount Diablo Comment
  UC2027840  Amaranthus blitoides Barbara Ertter 2000-9-30 17536 Contra Costa West side Mount Diablo, Briones-Mount Diablo Trail ca 1 mile NW of Macedo Ranch. Comment
  CDA22507  Amaranthus deflexus D. G. Kelch, Mike Park 2008-9-1 8 .301 Contra Costa Carquinez Strait; Lonetree Point. Rodeo Shoreline Park. Rodeo. Comment
  CDA7886  Amaranthus deflexus D. G. Kelch, A. G. Murdock 2004-7-9 04 .291-B Contra Costa Carquinez Strait; Crockett; Edwards Creek, immediately below high school. Comment
  UC1948953  Ambrosia chamissonis William J. Ferlatte, L. Maynard Moe 1970-4-27 1219 Contra Costa San Francisco Bay: Red Rock Island Comment
  SEINET11910975  Amelanchier alnifolia W. Knight, Knight, I. 1983-1 4741 Contra Costa Tilden Botanic Garden, Berkeley Comment
  JEPS45147  Amelanchier utahensis W. L. Jepson Oct 1909 3499 Contra Costa n end Moraga Ridge; Oakland Hills Comment
  CAS-BOT-BC142927  Amelanchier utahensis H. E. McMinn 1923-6-13 231 Contra Costa From 6 mi. n. of Camp Frost on Livermore & Mt. Hamilton Road Comment
  UC726360  Amsinckia A. A. Heller 1941-3-24 15906 Contra Costa Byron Springs Comment
  CAS-BOT-BC222220  Amsinckia John Thomas Howell 1934-4-8 11827 Contra Costa South of Antioch Comment
  CAS-BOT-BC222221  Amsinckia John Thomas Howell 1934-4-8 11814 Contra Costa 7 miles from Clayton on road to Livermore Comment
  CAS-BOT-BC222226  Amsinckia Alice Eastwood; John Thomas Howell 1936-4-19 2131 Contra Costa Nortonville Comment
  CAS-BOT-BC222227  Amsinckia Alice Eastwood; John Thomas Howell 1936-4-19 2131 Contra Costa Nortonville Comment
  CAS-BOT-BC222231  Amsinckia John Thomas Howell 1933-3-29 10916 Contra Costa Pittsburg Comment
  CAS-BOT-BC222236  Amsinckia John Thomas Howell 1933-3-29 10911 Contra Costa Nortonville hills Comment
  UC1094074  Amsinckia eastwoodiae Francia Chisaki 1952-3-13 201 Contra Costa 0.25 mi s of Hwy 50 on Mountain House Road Comment
  CDA7931  Amsinckia intermedia D. G. Kelch, A. G. Murdock 2005-3-11 5 .039 Contra Costa Carquinez Strait Region; McEwen Road. Carquinez Shoreline EBRP. West of Martinez Highschool. Comment
  UC1084555  Amsinckia intermedia Francia Chisaki, Peter M. Ray 1952-5-4 2274 Contra Costa 0.7 mi west of Inspiration Point (and road e to; and Orinda-Richmond Road); Tilden Park Comment
  UC1191046  Amsinckia intermedia R. Bacigalupi and Francia Chisaki 1957-3-27 912 Contra Costa 0.1 mi nw of crossing with Empire Avenue (field along Neroly Road) 24 Comment
  UC725373  Amsinckia intermedia A. A. Heller 1938-4-9 15016 Contra Costa 3 mi sw of Antioch Comment
  UC881400  Amsinckia intermedia Lewis S. Rose 1941-3-13 41032 Contra Costa 3 mi s Byron 15 Comment
  UCR265177  Amsinckia intermedia Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8130 Contra Costa San Joaquin Valley, Clifton Court Forebay, c. 15 air miles southwest of Stockton 0 Comment
  UC1094071  Amsinckia intermedia Francia Chisaki 1952-3-13 203 Contra Costa 0.25 mi s of Highway #50 (on Mountain House Road) Comment
  RSA125789  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
  UC1084623  Amsinckia lunaris Francia Chisaki, Peter Kamb Ray 1952-5-4 2275 Contra Costa 1.5 mi e Orinda-Richmond road (leaving this road ca 1 mi n of Orinda); Bear Creek Road Comment
  UC525560  Amsinckia lunaris Joseph P. Tracy 1934-4-30 13196 Contra Costa near Lafayette; Coast Ranges 152 Comment
  JEPS25354  Amsinckia lycopsoides Rimo Bacigalupi with Paul C. Hutchison and John Weiler 1959-3-19 6964 Contra Costa 1.9 mi w Byron (at road summit along Camino Diablo) 54 Comment
  SD71397  Amsinckia menziesii John Thomas Howell 1933-5-14 11224 A Contra Costa St. Mary's College Comment
  CAS-BOT-BC26823  Amsinckia peltigera Alice Eastwood 1921-4-18 10311 a Contra Costa Antioch Comment
  JEPS68948  Amsinckia tessellata var. tessellata Edward Lee 1935-3-10 1276 Contra Costa w watershed of Kirker Creek (Kirker Pass, Donovan Road); Kirker Pass Comment
  SBBG122786  Anagallis arvensis B. Ertter 1993-5-7 11717 Contra Costa horse trail SE of Vollmer Peak, E of Tilden Park steam trains 518 Comment
  UCD164884  Anagallis arvensis Henry House 1995-5-16 1995- 11 Contra Costa About 100 m west of Walnut Blvd., ca. 1.25 km south of Marsh Creek Rd. 33 Comment
  SEINET9341786  Anagallis arvensis Unknown 1966-4-15 101 Contra Costa Contra Costa County Comment
  UC35150  Androsace elongata subsp. acuta J. P. Tracy 1902-3-15 1314 Contra Costa hills near Berkeley; San Francisco Bay, San Pablo Ridge 457 Comment
  UC407051  Anemopsis californica Rimo Bacigalupi 1926-4-30 1347 Contra Costa about 3 mi e of Walnut Creek (on Mount Diablo Road); Mount Diablo Road Comment
  UC692561  Angelica californica Mary L. Bowerman 1932-5-6 1420 Contra Costa Mount Diablo, Mitchell Canyon Mitchell Canyon; Mount Diablo, Mitchell Canyon 228 Comment
  JEPS84503  Anisocarpus madioides Jack Stratford 1981-5-11 Contra Costa Huckleberry Trail Huckleberry Botanic Regional Preserve Comment
  UC2012963  Anthriscus caucalis Barbara Ertter with Travis Columbus 1990-6-10 9111 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill, damp soil in eroded stream cut, near crossing on Spengler Trail NE of Briones Peak. Comment
  SBBG33408  Antirrhinum vexillocalyculatum A. D. E. Elmer -Jun-1903 4809 Contra Costa Mount Diablo Comment
  SEINET3161272  Aphyllon comosum Unknown sn Contra Costa Antioch Comment
  UC20822  Apiastrum angustifolium Edw. L. Greene 1892-6-20 Contra Costa Mount Diablo Comment
  CDA15262  Apocynum cannabinum G. F. Hrusa, D. Crowe 1998-5-8 14393 Contra Costa Sacramento Delta; Along Antioch-Pittsburg highway adjacent to E end of Dow Chemical property in Pittsburg. Comment
  CDA39735  Apocynum cannabinum D. G. Kelch 2004-7-9 4 .306 Contra Costa Carquinez Strait; Alhambra Creek, Martinez, near Muir gravesite, Arroyo del Hambre. Comment
  UC692086  Aquilegia formosa Mary L. Bowerman 1935-5-18 3021 Contra Costa across the rd and a little east from the parking area Mount Diablo 1066 Comment
  UCD95520  Aquilegia formosa Collector unknown Date unknown s.n. Contra Costa On ridge to west of Franklin Canyon (Central). 274 Comment
  CAS-BOT-BC17272  Arabis blepharophylla Paul F. Covel 1938-5-8 1514 Contra Costa Summit Mount Diablo. Comment
  UC10113 Image available Arabis breweri Wm. H. Brewer 1862-5-14 1086 Contra Costa rocky summit of Mt. Diablo on eastern peak Comment
  UC691128  Arabis glabra Mary L. Bowerman 1932-5-6 1431 Contra Costa Mitchell Canyon Mount Diablo 251 Comment
  JEPS111945  Arbutus menziesii D. G. Kelch 2004-9-2 04 .339 Contra Costa Martinez - West: Ozol Rock and Scenic Drive. East of Ozol 30 Comment
  SBBG50848  Arbutus menziesii A. Hartman 1960-4-19 9 D Contra Costa North Gate Rd, Mt Diablo St Park 609 Comment
  UC400150  Arbutus menziesii Ynes Inexia 1929-4-21 2382 Contra Costa Moraga Valley Comment
  JEPS40128  Arceuthobium campylopodum W. L. Jepson 1898-10-18 1898 Contra Costa Mitchell Canyon Mt. Diablo 487 Comment
  UC692041  Arceuthobium campylopodum Mary L. Bowerman 1930-6-22 374 Contra Costa above main canyon (Mitchell Canyon Trail); Mount Diablo Comment
  UC2028513  Arceuthobium campylopodum Barbara Ertter 1996-11-24 15417 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca 1/2 air miles ENE of Macedo Ranch. Comment
  CAS-BOT-BC410130  Arceuthobium occidentale J Kuijt 1958-1-22 s.n. Contra Costa Mt. Diablo Comment
  JEPS98884  Arctostaphylos R. Gankin, J. Roof, R. Hildreth, R. Brewer, W. and I. Knight 1964-10-7 Contra Costa nature trail, head of Dan Cook Canyon Mount Diablo Comment
  UC727009  Arctostaphylos A. A. Heller 1942-3-15 16399 Contra Costa roadside bank along e-w road below Vine Hill Schoolhouse Comment
  SEINET11989149  Arctostaphylos andersonii var. auriculata B. A. Stein 1981-1 460 Contra Costa Mt. Diablo State Park, Rock City Campground 457 Comment
  CAS-BOT-BC24115  Arctostaphylos auriculata Mary L. Bowerman 1932-9-5 1546 Contra Costa Inner Black Hills: Near fire trail which runs south from large spur (on Meridian) heading into Sycamore Canyon. Comment
  CAS-BOT-BC24120  Arctostaphylos auriculata Alice Eastwood 1922-3-17 11083 Contra Costa Mt. Diablo Comment
  POM203162  Arctostaphylos auriculata Alice Eastwood 1922-3-17 11083 Contra Costa Mt. Diablo Comment
  RSA15419  Arctostaphylos auriculata Alice Eastwood, John Thomas Howell 1936-4-19 2130 Contra Costa Nortonville. Comment
  RSA212152  Arctostaphylos auriculata L. S. Rose 1970-4-2 70023 Contra Costa Rock City, Mount Diablo. 426 Comment
  UC1200411  Arctostaphylos auriculata Edward Lee 1936-1-12 1714 Contra Costa w-facing slope immediately s Nortonville Comment
  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
  UC697791  Arctostaphylos auriculata Mary L. Bowerman 1932-9-5 1547 Contra Costa near firebreak which runs s from large spur (on meridian) heading into Sycamore Canyon; Mount Diablo, Inner Black Hills Comment
  CDA33795  Arctostaphylos crustacea D. G. Kelch 2011-2-4 11 .017 Contra Costa Bear Creek Road west of Orinda near of Briones Park. 0 Comment
  CAS-BOT-BC23560  Arctostaphylos crustacea John Thomas Howell 1930-6-15 5311 Contra Costa Rocky north-west slope of summit of Grizzley Peak, Berkeley Hills. Comment
  UCSB26085  Arctostaphylos crustacea subsp. crustacea Lee, Edward 1935-12-28 Contra Costa Western end of Las Trampas Ridge; (T1S, R2W, Sect. 22, Concord Quadrangle) 426 Comment
  JEPS81633  Arctostaphylos glandulosa subsp. glandulosa Roger Raiche 1982-1-1 20043 Contra Costa near Grizzly Peak; Claremont Canyon Comment
  UC1120188  Arctostaphylos glandulosa subsp. glandulosa R. C. Wilson 1935-3-15 8157 Contra Costa 1 1/2 mi w Cave Pt.; Mt. Diablo Quadrangle Comment
  UC1120336  Arctostaphylos glandulosa subsp. glandulosa R. C. Wilson 1935-2-26 105 Contra Costa 1 mi sw Nortonville; Mount Diablo Quadrangle Comment
  UC692232  Arctostaphylos glauca Mary L. Bowerman 1933-3-11 1748 Contra Costa in gully nw park entrance (outer s face of ridge); Mount Diablo, Rock City Ridge (=Fossil Ridge) Comment
  UCD51123  Arctostaphylos glauca R. W. Lundh 1932-8-28 152 Contra Costa Eagle Point. 725 Comment
  CAS-BOT-BC27256  Arctostaphylos laevigata Alice Eastwood 1922-3-17 11082 Contra Costa Mt. Diablo Comment
  RSA632814  Arctostaphylos laevigata Jon E. Keeley 1996-6-24 27578 Contra Costa Above Rock City, Mt. Diablo. 540 Comment
  UCD52165  Arctostaphylos manzanita Edward Lee 1936-1-12 1712 Contra Costa Canyon bottom; immediately south of Nortonville. Comment
  OBI14657  Arctostaphylos manzanita subsp. laevigata H. E. McMinn, E. Maino 1931-4-11 136 Contra Costa Mt Diablo Comment
  POM203168  Arctostaphylos manzanita subsp. laevigata L. S. Rose 1934-2-28 34040 Contra Costa 8 miles NE Danville, S slope of Mt. Diablo. Comment
  UC1389137  Arctostaphylos manzanita subsp. laevigata H. A. Jensen 1938-10-27 452 Contra Costa head of Curry Canyon Mt. Diablo Quadrangle 518 Comment
  UC549755  Arctostaphylos manzanita subsp. laevigata J. E. Adams 1934-3-19 679 Contra Costa Mt. Diablo Comment
  UC692516  Arctostaphylos manzanita subsp. laevigata Mary L. Bowerman 1931-3-1 541 Contra Costa e meridian (w part of chaparral); Mount Diablo, Inner Black Hills Comment
  UC82944  Arctostaphylos manzanita subsp. laevigata Katharine Brandegee 1889-1 5 Contra Costa Antioch Comment
  UC2029140  Arctostaphylos manzanita subsp. laevigata Barbara Ertter with Alan Prather 2003-6-7 18197 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, oak scrub along Valley View Trail in NE corner of park. Comment
  CAS-BOT-BC24385  Arctostaphylos manzanita subsp. manzanita Mary L. Bowerman 1932-1-23 1076 Contra Costa Mount Diablo, Sycamore canyon, east fork: near canyon bottom. Comment
  CAS-BOT-BC24390  Arctostaphylos manzanita subsp. manzanita Walter Knight; Irja Knight 1980-3-16 3713 Contra Costa Opposite 5996 Skyline Drive, El Sobrante. Comment
  CAS-BOT-BC24398  Arctostaphylos manzanita subsp. manzanita Mary L. Bowerman 1932-1-19 1074 Contra Costa Mount Diablo, Inner Black Hills. Just over ridge. Comment
  CAS-BOT-BC42230  Arctostaphylos pallida H. E. McMinn 1925-1-1 s.n. Contra Costa Head of San Leandro Creek Comment
  HSC93963  Arctostaphylos pallida C. Newberry 1994-3-12 7163 Contra Costa Huckleberry Botanic Regional Preserve, Skyline Trail 244 Comment
  SBBG114892  Arctostaphylos pallida C. Bornstein 1999-3-20 Contra Costa Sobrante Ridge Regional Preserve 243 Comment
  JEPS19849  Arctostaphylos tomentosa subsp. crustacea W. L. Jepson 1916-8-20 6847 Contra Costa Moraga Ridge Oakland Hills Comment
  JEPS46271  Arctostaphylos tomentosa subsp. crustacea W. L. Jepson 1943-6-19 20850 Contra Costa Moraga Ridge Comment
  JEPS48823  Arctostaphylos tomentosa subsp. crustacea H. M. Wheeler 1944-1-16 27506 Contra Costa Moraga Ridge Oakland Hills Comment
  JEPS98840  Arctostaphylos tomentosa subsp. crustacea Walter Knight, Irja Knight, James B. Roof, R. Gankin, R. Hildreth 1964-10-7 Contra Costa near Rock City; Mt. Diablo Comment
  UC549410  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 622 Contra Costa Moraga Ridge Comment
  UC549412  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-19 677 Contra Costa Rock City Mount Diablo Comment
  UC549461  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 633 Contra Costa Moraga Ridge Comment
  UC549467  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 636 Contra Costa Moraga Ridge Comment
  UC2046013  Arctostaphylos viscida subsp. viscida Stephen W. Edwards July, 2012 s.n. Contra Costa Martinez. Comment
  UC692179  Argemone Mary L. Bowerman 1932-10-1 1603 Contra Costa Mount Diablo, Mitchell Canyon Mitchell Canyon; Mount Diablo, Mitchell Canyon Comment
  CAS-BOT-BC102183  Argyranthemum foeniculaceum G. Thomas Robbins; John Weiler 1959-5-23 4022 Contra Costa Breakwater portion of Brooks Island (its northwestern extension), San Francisco Bay, Richmond Comment
  UCD129096  Argyranthemum foeniculaceum G. Thomas Robbins; John Weiler 1959-5-23 4022 Contra Costa portion of Brooks Island (its northwestern extension), San Francisco Bay. Comment
  UC6151  Aristolochia californica Harley P. Chandler 1901-3-22 866 Contra Costa Port Costa San Francisco Bay Region, Port Costa Comment
  CAS-BOT-BC400402  Aristolochia californica H. M. Hall 1899-4-23 s.n. Contra Costa Lauterwasser Creek Comment
  JEPS32457  Aristolochia californica Mrs. L. J. Barker 1932-3-27 Contra Costa Bear Valley rd. just over the divide on Pinole side Orinda 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
  CAS-BOT-BC82385  Arnica discoidea Paul F. Covel 1938-5-8 1460 Contra Costa Summit Mt. Diablo Comment
  UC1949095  Artemisia biennis Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19800 Contra Costa upper (south) end of San Pablo Dam Reservoir northwest of Orinda Comment
  JEPS111689  Artemisia californica D. G. Kelch 2004-3-5 04 .7 Contra Costa Martinez - Rankin Park 56 Comment
  UC449651  Artemisia californica W. P. Taylor 1912-7-16 Contra Costa 2 mi sw Walnut Creek 121 Comment
  SEINET11853227  Artemisia californica M. T. Doutt 1930-1 105 Contra Costa Marsh Creek Comment
  SEINET14199582 Image available Artemisia californica W. L. Jepson 1898-10-14 s.n. Contra Costa Berkeley, Berkeley Hills Comment
  UC2028460  Artemisia douglasiana Barbara Ertter 1997-9-7 15794 Contra Costa North side Mount Diablo, Donner Creek crossing at south end of Hetherington Trail Comment
  UC521721  Artemisia douglasiana Joseph Andorfer Ewan 1933-10-15 8033 Contra Costa grassy slope above Indian Ceremonial Spr.; Mt. Diablo Comment
  UC691355  Artemisia douglasiana Mary L. Bowerman 1930-10-4 484 Contra Costa Pioneer Camp Ground Mount Diablo Comment
  UC691721  Artemisia douglasiana Mary L. Bowerman 1930-8-24 414 Contra Costa Mitchell Canyon Mount Diablo, Mitchell Canyon Comment
  CAS-BOT-BC90297  Artemisia douglasiana Vincent Jones 1920-8-20 s.n. Contra Costa Vallejo Comment
  HSC24607  Asarum caudatum D. A. Shally 1965-4-18 41 Contra Costa Canyon, 1 mi. N of Canyon Store Comment
  SEINET10779730  Asclepias californica subsp. greenei D. G. Nelson 1937-4-24 Nelson 520 Contra Costa On Marsh Creek Road, between Byron and Clayton Comment
  CHSC75046  Asclepias fascicularis Roger Thom 1987-5-18 10 Contra Costa Calif. State University Hayward's Contra Costa Campus. 3100 Oak Park Blvd. Pleasant Hill. 30 Comment
  CDA39306  Asparagus officinalis subsp. officinalis A. G. Murdock 2003-6-24 115 Contra Costa Carquinez Strait; Near parking lot at northeast corner of Mount Wanda, Martinez. Comment
  JEPS112507  Asparagus officinalis subsp. officinalis A. G. Murdock 2003-6-24 115 Contra Costa Mt. Wanda - Martinez Near parking lot at NE corner of Mt. Wanda 37 Comment
  JEPS99535  Aspidotis californica Mary L. Bowerman 1979-5-12 Contra Costa Mount Diablo, North Peak trail between summit rd. and Devil's Pulpit. Comment
  CDA15295  Aster lentus Amy Hiss 1998-10-14 s.n. Contra Costa Sacramento Delta; Marina Fishing Pier at northernmost limit of city of Antioch. Comment
  RSA417743  Aster radulinus M. B. Dunkle 1931-7-18 2532 Contra Costa Strawberry Canyon, Berkeley 152 Comment
  CAS-BOT-BC180572  Astragalus asymmetricus Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mt. Diablo Comment
  UC1606355  Astragalus asymmetricus Barbara Ertter with Dianne Lake 1991-8-18 10678 Contra Costa nw Bull Valley staging area (Carquinez Strait Regional Shoreline e of Crockett); Carquinez Strait Regioinal Shoreline e of Crockett Comment
  UC83459  Astragalus asymmetricus Katharine Brandegee June 1891 Contra Costa Antioch Comment
  RSA480534  Astragalus didymocarpus Katherine Brandegee 1889-05 s.n. Contra Costa Antioch Comment
  UC83444  Astragalus didymocarpus Katharine Brandegee May 1886 Contra Costa Antioch Comment
  CAS-BOT-BC177886  Astragalus didymocarpus var. didymocarpus 1884-5-1 s.n. Contra Costa antioch Comment
  JEPS112423  Astragalus gambelianus Dean G. Kelch and Andrew G. Murdock 2005-4-2 05 .107 Contra Costa Alhambra Valley; county: Contra Costa; EBMUD land. North of intersection of Alhambra Valley Road and Castro Ranch Road. Comment
  UC635299  Astragalus gambelianus H. L. Mason 1928-4-15 4345 Contra Costa Moraga Ridge Comment
  UC692524  Astragalus gambelianus Mary L. Bowerman 1932-4-9 1328 Contra Costa small ridge e of south spur meridian (Inner Black Hills, Mount Diablo); Mount Diablo, Inner Black Hills Comment
  UC13431  Astragalus gambelianus W. L. Jepson May, 1891 Contra Costa Comment
  SEINET10486680  Astragalus nigrescens Lincoln Constance, Carl W. Sharsmith 1940-4-27 Constance 2572 Contra Costa Petals purplish; fruit obcompressed. Loose serpentine soil, open s slope, pine Canyon, base of mt diablo. 305 Comment
  POM225552  Athysanus pusillus J. T. Howell 1931-3-10 5754 Contra Costa East side of Mt. Diablo 7 miles from Clayton on Livermore road. Comment
  CAS-BOT-BC16333  Athysanus unilateralis Alice Eastwood 1914-3-14 3766 Contra Costa Byron Springs. Comment
  CDA9508  Atriplex argentea D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .235 Contra Costa CA Delta; Along Clifton Court Near Clifton Court Forebay. Comment
  RSA452692  Atriplex argentea L. S. Rose 1932-10-2 32660 Contra Costa Byron. 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
  UC219420  Atriplex argentea var. mohavensis H. M. Hall 1922-5-6 11803 Contra Costa near Byron (alkaline fields); near Byron Comment
  CAS-BOT-BC168536  Atriplex coronata J. W. Congdon 1889-6-22 s.n. Contra Costa Byron Springs Comment
  CAS-BOT-BC168537  Atriplex coronata H. M. Hall 1923-10-2 s.n. Contra Costa Byron Hot Springs Comment
  UC219362  Atriplex coronata H. M. Hall 1922-5-6 11802 Contra Costa 8 mi w Byron (e of Mt. Diablo); , w of Byron Comment
  UCD148250  Atriplex coronata Robert E. Preston 2013-6-14 2912 Contra Costa 3.1 mi WSW of Byron, 0.25 mi E of Kellogg Creek. 66 Comment
  CHSC98938  Atriplex coronata var. coronata Samantha Mackey Hillaire 2007-7-17 1243 b Contra Costa Briones Valley, ~0.2 mile west of Marsh Creek Reservoir. 60 Comment
  CDA9500  Atriplex depressa D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .227 Contra Costa Byron Airport. 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
  UC1601683  Atriplex joaquinana Katharine Brandegee 1907-5-3 Contra Costa between Antioch Marsh Creek; between Antioch and Marsh Creek Comment
  UC2042800  Atriplex prostrata Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10871 Contra Costa Dow Wetlands Preserve just W of Antioch marina. Comment
  UCD158700  Atriplex prostrata James A. Neilson Jr. 1972-10-22 3509 a Contra Costa Walnut Creek drainage. Elevation estimated in Google Earth by label maker. 0 Comment
  UC2027884  Atriplex rosea Barbara Ertter, Chris Thayer 1996-10-25 15367 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park. Comment
  UC53773  Avena barbata Jos. Burtt Davy 1899-4-19 7839 Contra Costa Claremont Canyon Comment
  RSA385404  Avena fatua H. de Forest 1930-7-5 s.n. Contra Costa Roadside near Moraga. Comment
  UC53686  Avena fatua J. Burtt Davy 1900-5-24 6537 Contra Costa Pt. Richmond Comment
  CAS-BOT-BC98766  Baccharis douglasii Walter Knight; I. Knight; S. Rae; B. Doyle; J. T. Howell; E. McClintock 1978-9-5 3209 Contra Costa Browns Island, near Sandy Knoll Comment
  JEPS111734  Baccharis glutinosa D. G. Kelch 2004-9-2 04 .337 Contra Costa Pacheco Marsh Marsh east of Martinez and I-680 and east of lone tree Marsh. Rhizomatous herb in marsh, 1 m tall 5 Comment
  UC1199295  Baccharis glutinosa Joseph P. Tracy 1932-9-10 10784 Contra Costa e of and on Franklin Canyon Road Pinole (Rodeo Creek); , Franklin Canyon Road 60 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
  JEPS104734  Baccharis pilularis John L. Morrison 1936-8-30 1848 Contra Costa Shasta Road, Wildcat Canyon Comment
  UC691861  Baccharis salicifolia subsp. salicifolia Mary L. Bowerman 1931-5-2 798 Contra Costa Donner Canyon stream Mount Diablo 152 Comment
  SEINET3387286 Image available Baeria gracilis Lewis S. Rose 1932-3-15 3276 Contra Costa open fields, Byron Comment
  UC36778  Balsamorhiza deltoidea J. Burtt Davy 1895-4-7 910 Contra Costa Antioch Comment
  UC2028394  Balsamorhiza deltoidea Barbara Ertter with Richard K. Brummitt 1998-5-13 16139 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, south leg of Loughler Loop Trail just west of pass over central ridge, NW-facing slope Comment
  UC691250  Barbarea orthoceras Mary L. Bowerman 1933-5-3 1972 Contra Costa due s Mount Diablo summit ((Meridian Peak)); Mount Diablo 731 Comment
  UC691252  Barbarea orthoceras Mary L. Bowerman 1931-2-28 528 Contra Costa Mount Diablo; South Road just below junction with North Road Comment
  RSA666351  Bassia hyssopifolia Barbara Ertter, Brad Olson, Lynne Hosley, A. Youngson 1991-10-20 10885 Contra Costa Dow Wetlands Preserve, just W of Antioch marina. Comment
  JEPS74805  Bellardia trixago L. R. Heckard, T. I. Chuang, and R. Bacigalupi 1975-5-7 4013 Contra Costa ca 1/2 mi e Pinole (just e of Interstate 80 along main route of Santa Fe Railroad) Comment
  UCD146713  Bellardia trixago G. F. Hrusa; D. Crowe 1998-5-8 14386 Contra Costa Sacramento-San Joaquin River Delta. East end of Dow Chemical property at Pittsburg. 15 Comment
  CHSC23354  Bellis perennis Willis Ball 1975-2-23 441 Contra Costa Contra Loma Regional Park. In area #1. Ca. 40 yds W of restroom facility on the S end of the lake. 30 Comment
  CDA3009  Beta vulgaris C. Lasser 1960-4-19 Contra Costa State Highway, right of way between Concord Avenue and Grayson Creek. 0 Comment
  UC691494  Blennosperma nanum var. nanum Mary L. Bowerman 1932-3-12 1107 Contra Costa field a little e of, s of Diablo Bret Harte Memomorial Comment
  UC761866  Blepharizonia laxa R. F. Hoover 1937-9-2 2710 Contra Costa 1 mi s of Pittsburg Comment
  JEPS18818  Blepharizonia plumosa R. F. Hoover 1937-9-2 2708 Contra Costa Walnut Creek Comment
  UCD129618  Blepharizonia plumosa Robert E. Preston 2001-10-7 1777 Contra Costa Black Diamond Mines Regional Park, on w side of Stewartsville Trail, 0.75 mi s of Parking lot at Frederickson Lane trailhead. 152 Comment
  CAS-BOT-BC15958  Boechera breweri subsp. breweri H. E. McMinn 1922-6-2 83 Contra Costa At summit of Mount Diablo - a little north of summit. Comment
  SEINET5340097  Boechera breweri subsp. breweri W. C. Blasdale 1896-2-28 s.n. Contra Costa Mt. Diablo Comment
  UCD140005  Bolboschoenus glaucus Beecher Crampton 1950-7-28 623 Contra Costa San Francisco Bay, Richmond. Comment
  JEPS111899  Bolboschoenus maritimus D. G. Kelch 2004-9-2 04 .335 Contra Costa Pacheco Marsh Marsh east of Martinez and I-680 and east of lone tree Marsh. 5 Comment
  UC2029178  Bolboschoenus maritimus subsp. paludosus Barbara Ertter with Alan Prather 2003-6-7 18198 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, fenced pond in bend of east Highland Ridge Trail, 1/4 miles E of junction Stone Corral Trail. Comment
  CAS-BOT-BC31391  Bolboschoenus robustus J. W. Congdon 1893-7-29 s.n. Contra Costa Martinez Comment
  JEPS68954  Bowlesia incana Edward Lee 1935-3-10 1285 Contra Costa w Watershed of Kirker Creek (Kirker Pass, Donovan Road); Kirker Pass, Donovan Road Comment
  UC566855  Bowlesia incana H. L. Mason 1928-4-1 4272 Contra Costa Hills n of Mount Diablo (back of Pittsburg) Comment
  UC692361  Bowlesia incana Mary L. Bowerman 1935-6-1 3098 Contra Costa Mount Diablo, Pine-Mitchell Divide Mount Diablo; , Pine-Mitchell Divide 975 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
  CAS-BOT-BC36724  Brassica rapa R. E. Frenkel 1963-12-4 313 Contra Costa On California Highway 21, Market Plaza Center, Alamo. 79 Comment
  JEPS108535  Briza maxima Lisa Schultheis 1995-4-29 76 -95 Contra Costa along Knobcone Point trail, just after Curry Point trail splits into Knobcone and BlackHawk trails Comment
  JEPS99490  Briza maxima Mary Bowerman 1995-6-4 Contra Costa Mount Diablo, Pine canyon by fire road. 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
  RSA424694  Brodiaea elegans subsp. elegans Aaron Liston 1987-4-27 670 -2 Contra Costa 3 miles S of Byron. Comment
  SBBG115848  Bromus carinatus var. marginatus B. Crampton 1956-5-14 3393 Contra Costa ca. 7 mi SW of city of Antioch, just E of old mining town of Nortonville 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
  CHSC116659  Bromus hordeaceus Lowell Ahart; Josephine Guardino 2016-4-19 20791 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
  UCD58641  Bromus hordeaceus Beecher Crampton 1956-5-14 3417 Contra Costa 1/2 mile northwest of Martinez. Road to Crockett. Comment
  CAS-BOT-BC155469  Bromus hordeaceus Mary L. Bowerman 1931-5-13 839 Contra Costa Mount Diablo. Pine Canyon floor one mile above the sulphur springs. Comment
  UC692367  Bromus laevipes Mary L. Bowerman 1935-5-16 3011 Contra Costa behind Gabriel-Hinks (e side of North Peak, Mount Diablo); Mount Diablo, North Peak 289 Comment
  UCD59002  Bromus madritensis Beecher Crampton 1956-5-14 3395 Contra Costa Marsh Creek Road. 3.7 miles southeast of Clayton. Comment
  CAS-BOT-BC162355  Bromus madritensis Mary L. Bowerman 1935-5-3 2961 Contra Costa Sloan Road. 487 Comment
  UC691209  Bromus madritensis subsp. madritensis Mary L. Bowerman 1935-5-16 2986 Contra Costa Mount Diablo, Russelman Park Russelman Park; Mount Diablo, Russelman Park 381 Comment
  UC691210  Bromus madritensis subsp. madritensis Mary L. Bowerman 1933-5-9 2051 Contra Costa Mount Diablo, Stage Road Canyon Stage Road Canyon; Mount Diablo, Stage Road Canyon 731 Comment
  UC691212  Bromus madritensis subsp. madritensis Mary L. Bowerman 1935-5-1 2934 Contra Costa Mount Diablo, West Road,= North Road 2 mi from entrance Mount Diablo; , West Road 182 Comment
  UC692335  Bromus madritensis subsp. madritensis Mary L. Bowerman 1935-4-19 2863 Contra Costa near Turtle Rock (Mount Diablo); Mount Diablo 457 Comment
  JEPS75534  Bromus madritensis subsp. rubens P. F. Yorks 1974-4-28 1451 Contra Costa 1.7 km s of Bear Creek Road on Hampton Road (n of Briones Reservoir, in Hampton Road Natural Reserve); Hampton Road Natural Reserve Comment
  UCD59614  Bromus rubens Beecher Crampton 1956-5-14 3410 Contra Costa Southern boundary of Mt. Diablo State Park. Comment
  SEINET10868253  Bromus rubens Lewis S. Rose 1935-5-16 Rose 35169 Contra Costa Mt. Diablo, S slope. Comment
  UC692663  Calandrinia breweri Mary L. Bowerman 1932-4-16 1338 Contra Costa Eagle Point Ridge s 1682 point; Mount Diablo Comment
  CAS-BOT-BC438369  Calandrinia ciliata Alice Eastwood 1914-3-14 3809 Contra Costa Byron Springs Comment
  CAS-BOT-BC438374  Calandrinia ciliata John Thomas Howell 1940-4-21 15407 Contra Costa Pine Canyon, Mt. Diablo Comment
  JEPS99971  Calandrinia ciliata G. Smick 2003-4-8 GAS 134 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UCD100276  Calandrinia ciliata Robbin W. Thorp 1967-2-26 670226 B Contra Costa Somersville, ca. 5 miles southwest of Antioch. Comment
  JEPS111765  Callitriche marginata D. G. Kelch 2005-3-11 05 .34-B Contra Costa Mt. Wanda - Martinez Mt. Wanda. Fire road climbing North side of mountain 90 Comment
  UC2027722  Callitriche marginata Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15512 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC3357  Calochortus albus W. H. Brewer 1862-5-24 1157 Contra Costa se of Mt. Diablo Comment
  CAS-BOT-BC487477  Calochortus albus Robert F. Hoover 1939-4-26 4067 Contra Costa Head of Markley Canyon (west branch) Comment
  UC692000  Calochortus luteus Mary L. Bowerman 1930-6-18 334 Contra Costa Dan Cook Canyon, where C.C.C. Camp built later Mount Diablo Comment
  UC2028365  Calochortus luteus Barbara Ertter 1998-6-20 16259 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, NE base of Haystack Hill Comment
  CAS-BOT-BC132500  Calochortus pulchellus Harold V. Manor 1913-5-18 s.n. Contra Costa Mt. Diablo Comment
  CAS-BOT-BC132501  Calochortus pulchellus Carl Purdy 1899-5-15 s.n. Contra Costa Mt. Diablo Comment
  CAS-BOT-BC132506  Calochortus pulchellus John Thomas Howell 1940-4-21 15397 Contra Costa Pine Canyon, Mt. Diablo Comment
  UC3461  Calochortus pulchellus W. H. Brewer 1862-5-7 1063 Contra Costa n slope Mount Diablo Comment
  CDA19935  Calochortus splendens V. Guise 2002-6-25 PDR P 134004 Contra Costa Northern California; Old School House Rd, Tasajara. 0 Comment
  JEPS112510  Calochortus superbus Christopher Thayer 1996-6-7 Contra Costa Oursan Trail above Hampton rd. East Bay Municipal Utility District property Comment
  CAS-BOT-BC132534  Calochortus umbellatus John Thomas Howell 1933-5-14 11261 Contra Costa Hills east of St. Mary's College Comment
  JEPS17793  Calochortus umbellatus W. L. Jepson 1899-4-19 Contra Costa Las Trampas Canyon Comment
  RSA8517  Calochortus umbellatus J. T. Howell 1933-5-14 11261 Contra Costa Hills east of St. Marys college Comment
  UC691991  Calochortus umbellatus Mary L. Bowerman 1933-5-22 2170 Contra Costa e of Knobcone Point (on n-face); Mount Diablo, Inner Black Hills Comment
  JEPS122392  Calochortus venustus Nisrine Machaka-Houri with Gracie Benson-Martin 2014-5-17 NG 12 Contra Costa Golden Lily Trail, Mitchell Canyon, Mt. Diablo State Park. Comment
  UC197535  Calycadenia multiglandulosa H. M. Hall 1916-8-16 10274 Contra Costa 9 km s of Antioch; Horse Valley Comment
  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
  UC23188  Calystegia malacophylla subsp. pedicellata Edw. L. Greene 1892-6-25 Contra Costa Mt. Diablo Comment
  UC691852  Calystegia malacophylla subsp. pedicellata Mary L. Bowerman 1935-5-25 3072 Contra Costa s summit (Mount Diablo); Mount Diablo 1082 Comment
  UC691903  Calystegia malacophylla subsp. pedicellata Mary L. Bowerman 1935-5-25 3072 Contra Costa s summit (Mount Diablo); Mount Diablo 1082 Comment
  JEPS31638  Calystegia purpurata W. L. Jepson 1922-6-7 9720 Contra Costa North Berkeley Hills Comment
  JEPS78819  Calystegia purpurata Edward Lee 1936-5-24 2160 Contra Costa about 2 mi se Curry Canyon (Marsh Creek, Morgan Territory); Morgan Territory, se of Curry Canyon, Marsh Creek 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
  UCD150753  Calystegia sepium James A. Neilson Jr. 1972-11-2 3612 Contra Costa 2 miles NW of Concord, at intersection of Hwy 4 and Walnut Creek. 7 Comment
  JEPS111815  Calystegia sepium subsp. binghamiae D. G. Kelch 2003-8-13 03 .117 Contra Costa Martinez Marsh 1 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
  UC1594199  Calystegia sepium subsp. binghamiae Jerry Powell 1991-8-15 1614 Contra Costa Antioch National Wildlife Refuge Comment
  UC1618171  Calystegia sepium subsp. binghamiae Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10867 Contra Costa Dow Wetlands Preserve, just W of Antioch marina; along levee at water's edge, accessed from marina Comment
  CAS-BOT-BC199277  Calystegia sepium subsp. limnophila Malcom A. Nobs; S. Galen Smith 1949-7-8 941 Contra Costa Otto's Black Bass Resort, 4 miles north of Kingston Comment
  UCD119366  Calystegia sepium subsp. limnophila Jean Shepard; Scott Shepard 2011-8-28 857 Contra Costa Antioch Marina. South side of the San Joaquin River, east of the San Francisco Bay, approximately 3 1/4 miles west of the Antioch Bridge. 0 Comment
  UC1123589  Calystegia subacaulis C. M. Belshaw 1936-5-9 2076 Contra Costa 2.25 mi e Clayton; Mt. Diablo quad 381 Comment
  UC2029125  Calystegia subacaulis Barbara Ertter with David Gowen 2013-4-9 21308 Contra Costa Mount Diablo State Park southeast of Walnut Creek, ridge in bend of South Gate Road at Curry Point. Comment
  UC2031432  Calystegia subacaulis Barbara Ertter 2002-5-11 17843 Contra Costa Wall Point on southwest flank of Mount Diablo. Comment
  JEPS111077  Calystegia subacaulis Lee Echols 2003-6-23 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
  UC2029024  Calystegia subacaulis Barbara Ertter 1999-7-17 16760 Contra Costa El Cerrito, west side of Arlington Ave. in small triangle of land between Moeser Ln. and Terrace Dr., among mowed Avena. Comment
  UC1794986  Calystegia subacaulis subsp. subacaulis R. K. Brummitt and B. Ertter 1998-5-6 19788 Contra Costa Mt. Diablo, NE side, Donner Track 400 Comment
  RSA135413  Camissonia campestris subsp. campestris Volney Rattan 1879-1 s.n. Contra Costa Antioch Comment
  RSA181415  Camissonia campestris subsp. campestris James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  UC198869  Camissonia campestris subsp. campestris Chesnut and Drew 1887-4-18 Contra Costa Antioch Comment
  POM257268  Camissonia campestris subsp. campestris H. L. Mason 1931-4-5 5820 Contra Costa Antioch sandhills Comment
  UC35394  Camissonia contorta Chesnut and Drew 1889-4-18 Contra Costa Antioch Comment
  JEPS107069  Camissonia intermedia Barbara Ertter, Chris Thayer 1995-4-25 13989 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside through chaparral zone. 304 Comment
  RSA41303  Camissonia micrantha Robert F. Hoover 1935-3-10 314 Contra Costa Antioch sand-dunes Comment
  UC1784899  Camissoniopsis hirtella Barbara Ertter with Thomas J. Delendick 1996-5-2 14609 Contra Costa Mount Diablo, lower summit parking lot 1127 Comment
  JEPS102903  Campanula griffinii Barbara Ertter with M. L. Bowerman, L. Schultheis & K. Hintsa 1995-10-22 14535 Contra Costa road junction of Three Springs trail on NE side of mountain Mount Diablo 365 Comment
  UC2029116  Campanula griffinii Barbara Ertter with D. Gowen, J. Ginochio, M. Park, S. Matson, A. Moore, S. D'Alcamo, J. Greenhouse, K. Kersh and J. Gawthrup 2005-4-8 18570 Contra Costa Long Ridge on west flank of Mt. Diablo, springs and pond on Ginochio property near park boundary. Comment
  UC1050327  Campanula grossekii N. Floy Bracelin 1941-8-17 1572 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1055872  Campanula poscharskyana N. Floy Bracelin 1945-6-10 2854 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS111861  Capsella bursa-pastoris D. G. Kelch 2004-3-12 04 .27 Contra Costa Pinole Valley Hillside and canyon above Wright Road. Off of Pinole Valley Road 220 Comment
  CAS-BOT-BC37395  Cardamine californica Robert Francis Hoover 1938-2-21 2754 Contra Costa Point Richmond. Comment
  SBBG29852  Cardamine californica A. Carter, H. Sharsmith 1940-3-17 1498 Contra Costa near Stege Railroad Stn, 2 mi SE of Richmond 7 Comment
  UC691085  Cardamine californica Mary L. Bowerman 1931-2-8 504 Contra Costa Mineral Spring , Mineral Spring (Mount Diablo) 396 Comment
  UCD114186  Cardamine californica Morris Halperin 1929-4-21 s.n. Contra Costa St. Mary's College campus. Comment
  UCSB2297  Cardamine californica Kamb, Peter; Chisaki, Francia 1950-3-18 Contra Costa Saddle between North and South Peaks of Mt. Diablo 883 Comment
  CDA24752  Cardamine hirsuta D. G. Kelch 2007-3-24 7 .085 Contra Costa Carquinez Strait; Ozol; between Port Costa and Martinez, near old brick quarry. Comment
  UC2028048  Cardamine oligosperma Barbara Ertter 1998-2-15 15914 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, outcrops on north side of Joaquin Ridge south of Indian Creek, +/- wooded. Comment
  POM351433  Carduus pycnocephalus B. C. Templeton 1962-6-10 s.n. Contra Costa Mt Diablo. Comment
  UC691374  Carduus tenuiflorus Mary L. Bowerman 1932-5-6 1412 Contra Costa on floor of Mitchell Canyon; Mount Diablo, Mitchell Canyon 213 Comment
  UCD129927  Carduus tenuiflorus Collector Unknown Date Unknown 64 Contra Costa about 6 miles east of Pinole on Franklin Canyon Road. 152 Comment
  CAS-BOT-BC19203  Carex barbarae John Thomas Howell 1933-5-14 11236 Contra Costa St. Mary's College. 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
  JEPS25239  Carex barbarae G. Thomas Robbins 1959-8-1 4116 Contra Costa Las Trampas Creek, about 1 1/2 miles SE of St. Mary's College 182 Comment
  UC2029200  Carex densa Barbara Ertter 2003-2-8 18091 a Contra Costa Richmond Field Station (UC-Berkeley) Comment
  UC70611  Carex densa Jos. Burtt Davy 1899-4-19 7843 Contra Costa Glorietta; Inner Coast Range Mountains 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
  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
  JEPS111620  Carex obnupta D. G. Kelch 2004-7-9 04 .305 Contra Costa Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite 60 Comment
  CAS-BOT-BC119015  Carex pellita Miss Mary Leolin Bowerman 1935-5-16 3000 Contra Costa Russelmann Park road at Gregory Ranch junction. 289 Comment
  CHSC111020  Carex pendula Barbara Ertter; David Gowen 2010-11-17 20699 Contra Costa Southeast part of Lime Ridge Open Space (City of Walnut Creek), lower end of east-facing drainage below Crystyl Ranch Trail ca 1/4 m N of Paraiso Trail, 37.927 deg. N 121.979 deg. W ca. 180 m (also in spring area in mid drainage, 37.927 deg. N 121.981 deg. W, ca 195 m). 180 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
  UC2028573  Carex serratodens Barbara Ertter with Stu Garrett 1997-3-29 15537 Contra Costa West side Mount Diablo, spring at north junction of Mothers Trail and Burma Road. Comment
  JEPS25119  Carex subbracteata G. Thomas Robbins 1959-4-18 3985 Contra Costa 1/2 mi e Pt. San Pablo (overlooking San Pablo Bay); San Pablo Bay, Richmond 7 Comment
  CAS-BOT-BC116916  Carex subbracteata var. subbracteata G. Thomas Robbins 1959-4-18 3984 Contra Costa Overlooking San Pablo Bay, ca 1/2 mi E of Pt. San Pablo, Richmond. 7 Comment
  CAS-BOT-BC116917  Carex subbracteata var. subbracteata G. Thomas Robbins 1959-4-18 3985 Contra Costa Overlooking San Pablo Bay, ca 1/2 mi E of Pt. San Pablo, Richmond. 7 Comment
  UCR198216  Carex tumulicola Dean Kelch 2006-5-5 06 .131 Contra Costa San Francisco Bay, East Bay, Wildcat Canyon Regional Park, near Wildcat Canyon Road terminus 122 Comment
  RSA0027404  Carex tumulicola Barbara Ertter 1999-7-17 16770 Contra Costa Tilden Regional Park, trail to Jewel Lake paralleling Wildcat Creek, through thick woodland growth. 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
  JEPS23818  Castilleja affinis subsp. affinis G. Thomas Robbins 1959-4-18 3990 Contra Costa about 0.25 mi e and above Pt. San Pablo; Richmond 30 Comment
  JEPS15197  Castilleja attenuata C. M. Belshaw 1936-5-11 2097 Contra Costa 5.25 mi e Danville; Mt. Diablo Quad. 289 Comment
  JEPS65193  Castilleja attenuata L. R. Heckard 1971-4-15 2474 Contra Costa 5.5 mi n Morgan Territory road intersection with Manning road (e of Mt. Diablo) Comment
  JEPS9949  Castilleja attenuata W. L. Jepson 1923-4-22 9873 Contra Costa Mt. Diablo Comment
  JEPS70758  Castilleja densiflora subsp. densiflora L. R. Heckard 1971-4-22 2492 Contra Costa near Pinole (near U.S. Hwy 40 crossing, along railroad grade) Comment
  UC1301202  Castilleja exserta subsp. exserta Helen K. Sharsmith 1963-4-7 5289 Contra Costa w of Antioch (e side of Kirker Pass road); San Francisco Bay Region 152 Comment
  UC27244  Castilleja exserta subsp. exserta R. C. Marsh 1900-4-5 Contra Costa Oakley; Mount Diablo Region Comment
  UC2028155  Castilleja exserta subsp. exserta Barbara Ertter 1998-4-4 15956 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  JEPS75507  Castilleja foliolosa P. F. Yorks 1974-5-19 162 Contra Costa ca 1.6 km s Bear Creek Rd on Hampton Rd in Hampton Road Natural Reserve (n of Briones Reservoir) 180 Comment
  UC1081509  Castilleja foliolosa H. L. Mason 1928-3-4 4169 Contra Costa Shell Ridge Comment
  UC691574  Castilleja rubicundula subsp. lithospermoides Mary L. Bowerman 1933-5-11 2081 Contra Costa ridge towards w end Inner Black Hills (on s side); 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
  JEPS48749  Castilleja subinclusa subsp. franciscana H. M. Wheeler 1944-1-16 27511 Contra Costa Upper San Leandro Canyon Oakland Hills, Moraga Ridge Comment
  CDA43391  Caulanthus flavescens Mike Pitcairn & Dean Kelch 2015-3-6 s.n. Contra Costa Overlook Trail, Black Diamond Mines, East Bay Regional Parks. Comment
  CAS-BOT-BC41039  Caulanthus flavescens Reed Clark Rollins 1946-3-25 3046 Contra Costa Western slope of Mount Diablo. Comment
  CAS-BOT-BC40510  Caulanthus lasiophyllus Mary L. Bowerman 1933-4-26 1924 Contra Costa Mount Diablo. North Peak ridge east-southeast of the peak, south face. 609 Comment
  CAS-BOT-BC40485  Caulanthus lasiophyllus Bolander 1863-1-1 368 Contra Costa San Pablo Landing. Comment
  CAS-BOT-BC48835  Ceanothus cuneatus W. C. Blasdale 1896-2-29 s.n. Contra Costa Mt. Diablo Comment
  JEPS48863  Ceanothus cuneatus var. cuneatus Elsa Kraeger 1926-3-7 Contra Costa e side Mt. Diablo Comment
  UC1071131  Ceanothus cuneatus var. cuneatus R. C. Wilson 1935-3-12 123 Contra Costa 1 mi se, Wall Pt.; Mt. Diablo quad. 335 Comment
  UC634568  Ceanothus cuneatus var. cuneatus H. L. Mason March, 1925 Contra Costa Mount Diablo Comment
  UC692589  Ceanothus cuneatus var. cuneatus Mary L. Bowerman 1930-6-10 319 Contra Costa accross the rd from and slightly below, Muir Area; Mount Diablo Comment
  SBBG68364  Ceanothus cuneatus var. ramulosus H. E. McMinn -- Contra Costa Mt Diablo Comment
  JEPS42309  Ceanothus oliganthus var. sorediatus H. H. Haworth 1917-5-3 Contra Costa Redwood Peak Oakland Hills Comment
  UC692588  Ceanothus oliganthus var. sorediatus Mary L. Bowerman 1935-5-30 3084 Contra Costa By Donner Canyon stream 161 Comment
  JEPS111663  Centaurea melitensis A. G. Murdock 2004-5-28 286 Contra Costa Pinole Peak 205 Comment
  RSA666408  Centaurea repens Bob Case 2001-10-2 s.n. Contra Costa Southeast Pleasant Hill, East Bay Municipal Utilities District right-of-way on West Hookston Road Comment
  UC1491380  Centaurea solstitialis G. Merrill 1981-7-21 Contra Costa 3 mi w of Camino Diablo Rd. (on Marsh Creek Road) Comment
  UC2028274  Centaurium davyi Barbara Ertter 1999-6-12 16702 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC1050885  Centranthus ruber N. Floy Bracelin 1942-5-17 1287 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC421693  Centromadia fitchii John Thomas Howell 1929-9-21 4388 Contra Costa 1 mi se Clayton Comment
  CAS-BOT-BC288543  Centromadia fitchii L. S. Rose 1941-10-13 41464 Contra Costa 1 mile E of Walnut Creek 50 Comment
  CAS-BOT-BC288548  Centromadia fitchii Mary L. Bowerman 1936-9-17 3548 Contra Costa Mount Diablo. North Rd 2.5 miles from North Gate: at roadside, slightly lower down, extending down the bank into grassland 243 Comment
  CAS-BOT-BC288549  Centromadia fitchii Rimo Bacigalupi 1922-9-24 s.n. Contra Costa Along road between Clayton Mitchell Comment
  CAS-BOT-BC288873  Centromadia parryi subsp. congdonii R. E. Preston 1998-10-6 1171 Contra Costa On N side of Camino Tassajara, from Tassajara Hill Elementary School to 0.35 mile W of Finlay Rd 228 Comment
  JEPS118743  Centromadia parryi subsp. congdonii Sarah Lynch 2012-8-1 s. n. Contra Costa Tassajara Valley (south of Danville); west of Camino Tasajara Road and south of Johnston Road Comment
  JEPS95222  Centromadia parryi subsp. congdonii R. E. Preston 1998-10-6 1173 Contra Costa E side of Camino Tassajara, ca. 1 mi S of Highland Road 170 Comment
  CAS-BOT-BC288878  Centromadia parryi subsp. congdonii David D. Keck 1933-11-2 2610 Contra Costa San Ramon, Cow Creek Canyon Rd, 0.5 mile from turnoff Comment
  CAS-BOT-BC288879  Centromadia parryi subsp. congdonii David D. Keck 1933-11-2 2610 Contra Costa San Ramon, Cow Creek Canyon Rd, 0.5 mile from turnoff Comment
  CAS-BOT-BC279179  Centromadia pungens subsp. pungens James McMurphy 1908-10-18 s.n. Contra Costa Antioch Comment
  UC1563855  Centromadia pungens subsp. pungens Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8138 Contra Costa alkali sink w and adjacen to Clifton Court Forebay (ca 15 air mi sw of Stockton) 0 Comment
  UC912272  Centromadia pungens subsp. pungens H. L. Mason 1929-9-21 5438 Contra Costa Marsh Creek Road 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-BC279202  Centromadia pungens subsp. pungens Volney Rattan 1886-6-15 s.n. Contra Costa Pacheco Valley Comment
  UC1606283  Cephalanthus occidentalis var. californicus Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10880 Contra Costa just w Antioch marina (Dow Wetlands Preserve, levee at n-center of preserve, at end of road); Dow Wetlands Preserve Comment
  CDA19002  Ceratophyllum demersum R. Gage 2000-10-18 PDR 1198719 B Contra Costa Clifton Ct. Forebay, NW of Tracy, at the head of State Water project. 0 Comment
  UC691104  Cercocarpus betuloides var. betuloides Mary L. Bowerman 1931-4-5 677 Contra Costa below Gregory Ranch (Mount Diablo); Mount Diablo Comment
  CDA4775  Chamaesyce serpens D. G. Kelch, A. G. Murdock 2005-6-24 5 .38 Contra Costa Carquinez Strait Region; Crockett - Crolona Heights. 6th Street at Lillian Street, Crockett, CA. 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
  UC1606334  Chamaesyce serpyllifolia Barbara Ertter, Brad Olson 1991-9-28 10830 Contra Costa betw Orinda and El Sobrante San Pablo Reservoir (s end of reservoir) Comment
  UC2062625  Chamaesyce serpyllifolia var. serpyllifolia Barbara Ertter with John Ginochio 2002-6-1 17944 Contra Costa Ginochio house on south side of North Gate Road on NW base of Mount Diablo, lower Arroyo del Cerro. Comment
  JEPS94004  Cheilanthes gracillima J. Greenhouse 1998-6-14 Contra Costa w. of Burma Rd. Trail ca. 1 mi. above North Gate Rd. Mt. Diablo 426 Comment
  UC42419  Cheilanthes gracillima W. H. Brewer 1862-5-28 1171 Contra Costa summit Mt Diablo Comment
  CAS-BOT-BC70279  Cheilanthes intertexta Alice Eastwood 1915-5-30 4528 Contra Costa Mt. Diablo Comment
  JEPS106991  Cheilanthes intertexta J. Greenhouse with Kevin Hintsa 2004-4-5 5084 Contra Costa Mt. Diablo, Fire Interpretive Trail, Devil's Pulpit 1085 Comment
  CHSC23348  Chenopodium album Willis Ball 1975-6-1 532 Contra Costa Contra Loma Regional Park. In area #11. On n side of road ca. 200 yds e of main entrance to park. 60 Comment
  UC630416  Chenopodium berlandieri Paule Guiget and Annetta Carter 1939-8-13 1453 Contra Costa Treat Ave. se Concord 53 Comment
  CDA23364  Chenopodium californicum D. G. Kelch, A. G. Murdock 2004-3-5 4 .01 Contra Costa Carquinez Strait Region; Sky Ranch. Dutra Fire Road. Franklin Canyon. Comment
  UC691936  Chenopodium californicum Mary L. Bowerman 1935-3-16 2746 Contra Costa Arroyo del Cerro Mount Diablo (between the fork) 304 Comment
  UC2028149  Chenopodium californicum Barbara Ertter 1998-4-4 15964 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, and Indian Valley School. Comment
  CAS-BOT-BC237992  Chloropyron molle subsp. molle Walter Knight; Neil Havlik 1979-10-7 3415 Contra Costa Point Pinole Regional Shoreline Comment
  UC692148  Chorizanthe membranacea Mary L. Bowerman 1930-6-28 403 Contra Costa lower Silver Spring , lower Silver Spring (Mount Diablo) Comment
  UC849193  Chorizanthe membranacea Lewis S. Rose 1941-5-15 41230 Contra Costa w slope Mount Diablo; w slope Mount Diablo 396 Comment
  CAS-BOT-BC264081  Chorizanthe uniaristata M. K. Curran 1884-1-1 s.n. Contra Costa Near Mt. Diablo Comment
  SD8106  Chorizanthe uniaristata Kate Curran June 1884 Contra Costa Antioch Comment
  CAS-BOT-BC30110  Chrysolepis chrysophylla var. minor H. E. Mc. Minn 1925-1-1 s.n. Contra Costa Head of San Leandro Creek Comment
  JEPS38066  Chrysolepis chrysophylla var. minor W. L. Jepson Oct 1909 3495 Contra Costa Moraga Ridge Comment
  JEPS46617  Chrysolepis chrysophylla var. minor W. L. Jepson 1919-1-25 8210 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
  OBI3313  Chrysolepis chrysophylla var. minor Neil Havlik 1969-9-1 518 Contra Costa Along the Huckleberry Trail aobut 1/2 mi from Skyline Blvd, Oakland HIlls 396 Comment
  HSC8062  Chrysolepis sempervirens D. A. Shally 1963-5-29 1 Contra Costa Canyon, 1.5 mi. NE of Canyon Store Comment
  UC691835  Cicendia quadrangularis Mary L. Bowerman 1942-5-24 3842 Contra Costa Fossil Ridge Mount Diablo (lower Rock City Camp) 457 Comment
  CHSC75054  Cichorium intybus Roger Thom 1987-5-26 16 Contra Costa 1900 block of Geary Rd. Walnut Creek 30 Comment
  UC20920  Cicuta maculata var. bolanderi Jos. Burtt Davy 1900-6-7 6668 Contra Costa near Martinez Comment
  RSA0070597  Cirsium cymosum C. M. Belshaw 1936-5-7 2050 Contra Costa 2 miles north of Danville 244 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
  JEPS59174  Cirsium occidentale var. venustum W. L. Jepson 1922-5-23 9655 Contra Costa s slope, upper third of mt. Mt. Diablo Comment
  SEINET4023759 Image available Cirsium occidentale var. venustum B. C. Templeton 1962-1 sn Contra Costa Mt. Diablo. Comment
  UC691383  Cirsium occidentale var. venustum Mary L. Bowerman 1931-5-23 899 Contra Costa Oyster Point Mount Diablo, Oyster Point Comment
  POM248733  Cirsium quercetorum J. T. Howell 1938-6-30 13940 Contra Costa Berkeley Hills on NE slope near head of Wildcat Canyon. Comment
Read comments
Nov 27 2009
  RSA757051  Citrullus colocynthis var. lanatus Rudolf Schmid 2003-9-13 2003 -15 Contra Costa Vacant lot, 24 Edwin Drive, Kensington 169 Comment
  JEPS111557  Clarkia affinis A. G. Murdock 2003-6-2 85 Contra Costa Port Costa - Reservoir: Uphill bank at east Crockett-Port Costa junction 28 Comment
  UC924273  Clarkia affinis H. S. Reed 1940-4-30 344 Contra Costa ne slopes Mount Diablo (Marsh Creek road) 243 Comment
  CAS-BOT-BC162563  Clarkia affinis Mary L. Bowerman 1933-5-17 2095 Contra Costa Branch of Curry Canyon due south of Olafsons' barn - Mount Diablo Comment
  UC2028167  Clarkia affinis Barbara Ertter 1998-5-3 16077 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  UC2028318  Clarkia affinis Barbara Ertter, Susan D'Alcamo 1998-6-12 16159 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. Comment
  UCD35144  Clarkia affinis Beecher Crampton 1950-4-2 524 Contra Costa Contra Costa CountyL Site of Judsonville. Comment
  UC373498  Clarkia biloba C. L. Hitchcock 1928-6-5 13 Contra Costa 1 1/2 mi from Port Costa (between Port Costa and Martinez) 40 Comment
  UC692438  Clarkia biloba Mary L. Bowerman 1930-6-22 355 Contra Costa Mitchell Canyon Mount Diablo Comment
  UC692439  Clarkia biloba Mary L. Bowerman 1935-6-15 3139 Contra Costa below Ransom Point (Eagle Point Ridge); Mount Diablo 822 Comment
  POM32522  Clarkia biloba subsp. biloba A. D. E. Elmer 1903-05 4319 Contra Costa Mount Diablo. Comment
  CAS-BOT-BC163606  Clarkia biloba subsp. biloba C. L. Hitchcock 1928-6-5 13 Contra Costa Between Porta Costa and Martinez, 1 1/2 mile from Port Costa 40 Comment
  CAS-BOT-BC163607  Clarkia biloba subsp. biloba V. Rattan 1886-1-1 s.n. Contra Costa Unspecified Comment
  SBBG60245  Clarkia concinna L. G. Yates 1895-1 Contra Costa Martinez Comment
  JEPS75483  Clarkia concinna subsp. concinna P. F. Yorks 1975-6-10 432 Contra Costa ca. 1.9 km s Bear Creek Road (on Hampton Rd., n of Briones Reservoir); Hampton Road Natural Reserve 180 Comment
  UC2028989  Clarkia concinna subsp. concinna Barbara Ertter 2000-5-14 17005 Contra Costa Donner Canyon on north side of Mount Diablo, serpentinitic sites in general area of junction of Donner Canyon, Cardinet Oaks, and Meridian Ridge roads, edged by Arctostaphylos glauca et al. Comment
  CDA38704  Clarkia gracilis subsp. gracilis D. G. Kelch 2007-6-3 7 .43 Contra Costa East Bay; Along gated portion of Hampton Rd N of San Pablo Reservoir. Comment
  CAS-BOT-BC172557  Clarkia purpurea subsp. purpurea Edw. L. Greene 1889-5-1 32 Contra Costa Near Martinez Comment
  RSA60760  Clarkia purpurea subsp. purpurea Edward L. Greene 1889-05 s.n. Contra Costa Martinez Comment
  CAS-BOT-BC163665  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1931-5-16 855 Contra Costa Mount Diablo. Summit Comment
  RSA448290  Clarkia purpurea subsp. quadrivulnera Bonnie C. Templeton 1962-6-10 s.n. Contra Costa Mt Diablo. Comment
  UC692485  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1933-5-18 2122 Contra Costa Blackberry Spring Mount Diablo Comment
  POM300659  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1930-6-5 263 Contra Costa Mount Diablo: west road 5.8 miles from entrance 457 Comment
  POM300660  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1931-4-25 760 Contra Costa Mount Diablo, above junction of south and west roads Comment
  CAS-BOT-BC165449  Clarkia unguiculata L. R. Abrams 1916-6-30 5702 Contra Costa Mt. Diablo near lake Comment
  CAS-BOT-BC165452  Clarkia unguiculata Alice Eastwood 1922-3-17 11078 Contra Costa Mt. Diablo Comment
  JEPS43601  Clarkia unguiculata W. L. Jepson 1919-6-8 8325 Contra Costa Mt. Diablo Comment
  RSA297008  Clarkia unguiculata W. L. Jepson 1919-6-8 8325 Contra Costa Mt. Diablo Comment
  RSA458865  Clarkia unguiculata Thekla Mohr 1917-07 3249 Contra Costa Mount Diablo Comment
  UCD32418  Clarkia unguiculata Beecher Crampton 1950-5-13 574 Contra Costa Southwest Walnut Creek. 30 Comment
  CAS-BOT-BC439166  Claytonia exigua subsp. exigua Mary L. Bowerman 1932-3-12 1113 Contra Costa Mount Diablo. Alamo Canyon 365 Comment
  CAS-BOT-BC439167  Claytonia exigua subsp. exigua John Thomas Howell 1926-3-7 1676 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC439172  Claytonia exigua subsp. exigua L. R. Abrams 1921-5-25 8023 Contra Costa Summit, Mt Diablo Comment
  CHSC93813  Claytonia exigua subsp. exigua K. L. Chambers 1977-4-1 4266 Contra Costa Mt. Diablo. On trail to Deer Flat from the summit road, ca. 1/8 mile above Deer Flat. Comment
  UC412616  Claytonia exigua subsp. exigua E. W. Hicks 1917-3-24 113 Contra Costa w shoulder Mt. Diablo 609 Comment
  UC634940  Claytonia exigua subsp. exigua H. L. Mason 1925-3-10 1296 Contra Costa higher slopes Mt. Diablo Comment
  UC692552  Claytonia exigua subsp. glauca Mary L. Bowerman 1933-5-4 1998 Contra Costa e end Fossil Ridge; Mount Diablo Comment
  UCD102390  Claytonia gypsophiloides Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. North Peak Road to North Peak. 880 Comment
  JEPS78750  Claytonia parviflora subsp. parviflora Edward Lee 1936-5-24 2157 Contra Costa about 2 mi se Curry Canyon (Marsh Creek); Morgan Territory, Marsh Creek Comment
  JEPS68970  Claytonia perfoliata subsp. perfoliata Edward Lee 1935-3-10 1304 Contra Costa Nortonville; s watershed of Kirker Creek Comment
  CAS-BOT-BC91358  Clematis lasiantha H. E. McMinn 1922-6-2 129 Contra Costa Mount Diablo. Comment
  POM151217  Clematis lasiantha C. F. Baker 1903-4-28 2946 Contra Costa Mitchell's canon, Mt. Diablo. Comment
  UC692071  Clematis lasiantha Mary L. Bowerman 1930-6-7 272 Contra Costa Meridian Peak summit Mt. Diablo 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
  UCSC006802  Collinsia Randall Morgan 1988-4-29 1151 Contra Costa Scree at NW slope of Twin Peaks, Mt. Diablo Comment
  RSA300992  Collinsia sparsiflora Mary L. Bowerman 1932-3-6 1101 Contra Costa Sycamore Canyon near mouth; West bank. 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
  UC400156  Collinsia sparsiflora var. collina Ynes Mexia 1929-4-21 2376 Contra Costa Moraga Valley Comment
  UC672470  Collinsia sparsiflora var. collina Herbert L. Mason 1929-3-15 5051 Contra Costa Nortonville Comment
  JEPS6335  Collinsia sparsiflora var. collina Mary L. Bowerman 1932-3-12 1112 Contra Costa Alamo Canyon. 365 Comment
  UC691583  Collinsia sparsiflora var. collina Mary L. Bowerman 1932-3-6 1101 Contra Costa Sycamore Canyon near mouth Sycamore Canyon, Mount Diablo; Mount 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
  JEPS103103  Collomia diversifolia Mary L. Bowerman 1975-6-7 Contra Costa E of Murchio Gap, on and near fire road Mount Diablo Comment
  UCD164881  Conium maculatum Henry House 1995-5-20 1995- 13 Contra Costa Adjacent to Walnut Blvd., approximately 1.25 km south of Marsh Creek Road. 30 Comment
  UC2029194  Conium maculatum Barbara Ertter 2000-7-16 17382 Contra Costa Diablo Foothills Regional Park, riparian strip along Pine Creek between Castle Rock Regional Recreation Area Comment
  UCD126197  Convolvulus arvensis Henry House 1995-5-20 1995- 18 a Contra Costa East Contra Costa County: ca. 100 meters west of Walnut Blvd., ca. 1.25 km south of Marsh Creek Road. 10 Comment
  JEPS100237  Convolvulus simulans Dean W. Taylor 1990-4-23 10635 Contra Costa ca. 2 miles due W of Byron Hot Springs 30 Comment
  UC1594168  Conyza bilbaoana Jerry Powell 1616 Contra Costa Antioch National Wildlife Refuge Contra Costa Comment
  UC1584663  Conyza canadensis Jerry Powell 1990-8-29 1586 Contra Costa Antioch National Wildlife Refuge Comment
  UC691785  Conyza canadensis Mary L. Bowerman 1930-10-4 477 Contra Costa Maple Spring Mount Diablo, Maple Spring Comment
  UC2028010  Conyza canadensis Barbara Ertter 1998-1-4 15888 Contra Costa South end of Diablo Foothills Regional Park southeast of Walnut Creek. Comment
  UC1050105  Coprosma areolata N. Floy Bracelin 1942-3-22 1985 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS21718  Cordylanthus pilosus subsp. pilosus John Thomas Howell 1955-8-24 30902 Contra Costa near Diablo Country Club; Mt. Diablo, S base of Comment
  JEPS6803  Cordylanthus pilosus subsp. pilosus W. L. Jepson 1894-10-1 21337 Contra Costa Moraga Valley Comment
  JEPS87949  Cordylanthus pilosus subsp. pilosus Barbara Ertter, CNPS 1990-8-19 9623 Contra Costa above Cutter Cove (e side of s end of Briones Reservoir, n of Orinda, along Bear Creek Trail on EBMUD land); Briones Reservoir, Bear Creek Trail 213 Comment
  RSA412333  Cordylanthus pilosus subsp. pilosus Hattie Benton 1917-10 3294 Contra Costa Mt. Diablo. Comment
  UC2027945  Cordylanthus pilosus subsp. pilosus Barbara Ertter 1997-9-7 15796 Contra Costa North side Mount Diablo, Donner Canyon Road below Cardinet Oaks Road junction. Comment
  CAS-BOT-BC209750  Cornus glabrata V. Rattan 1887-5-22 s.n. Contra Costa Alhambra Comment
  UC692512  Cornus glabrata Mary L. Bowerman 1935-6-21 3150 Contra Costa e. fork Arroyo del Cerro Mt. Diablo 182 Comment
  CAS-BOT-BC209590  Cornus sericea Ira L. Wiggins 1930-4-18 4593 Contra Costa Levee, east end of Jersey Island Comment
  CAS-BOT-BC209591  Cornus sericea Virginia I. Dains; Walter Knight 1986-8-8 5471 Contra Costa Jct Rock S1 & Werner Cut Comment
  RSA666415  Cortaderia jubata Barbara Ertter 1991-9-28 10854 Contra Costa [El Cerrito.] Comment
  UC2028555  Cortaderia selloana Barbara Ertter 1998-11-15 16459 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UCSB26540  Corylus cornuta subsp. californica Keefe, Joseph 1967-3-20 Contra Costa Along Huckleberry Trail, 0.5 mile east of Skyline Boulevard, east of Grizzly Peak Boulevard, east of Berkeley 274 Comment
  UC2028097  Cosmos bipinnatus Barbara Ertter 1996-9-19 15290 Contra Costa Cerrito Creek at base of Albany Hill, just west of San Pablo Avenue. Comment
  UC1622291  Cotoneaster lacteus Barbara Ertter 1997-1-5 15432 Contra Costa at Lime Ridge between Walnut Creek and Clayton (Ygnacio Valley Road); Lime Ridge, Ygnacio Valley Road Comment
  UC2028107  Cotoneaster pannosus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16117 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  CHSC23342  Cotula coronopifolia Willis Ball 1975-3-26 508 Contra Costa Contra Loma Regional Park. In area #1. On s side of lake ca. 50 yds. e of restroom facilities. 30 Comment
  JEPS111528  Cotula coronopifolia D. G. Kelch 2005-5-5 05 .212b Contra Costa Point Pinole - Giant Marsh Giant Salt Marsh 3 Comment
  JEPS111677  Cotula coronopifolia D. G. Kelch 2003-8-13 03 .114 Contra Costa Martinez Marsh 0 Comment
  UC31281  Cotula coronopifolia W. H. Brewer 1862-4-24 993 Contra Costa salt marshes near Bay Martinez Comment
  CAS-BOT-BC291337  Cotula coronopifolia Walter Knight; et al 1979-4-13 3359 Contra Costa Point Emmet, Browns Island Comment
  HSC5425  Cotula coronopifolia Greg Bos 1963-4-14 75 Contra Costa Bayshore Freeway at Central Ave., Richmond 0 Comment
  UC2043011  Cotula coronopifolia Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14915 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  CDA20616  Crassocephalum crepidioides G. F. Hrusa 2006-1-18 16841 a Contra Costa San Francisco Bay Area; San Pablo at Stanton and San Pablo Ave. 0 Comment
  JEPS99548  Crassula aquatica Mary Bowerman 1975-9-14 Contra Costa Mount Diablo, Hidden Pond. Comment
  CAS-BOT-BC427670  Crassula connata Peter H. Raven; H. L. Mason; R. Ornduff; et al 1957-4-4 10578 Contra Costa 3.0 miles s. of Byron Comment
  JEPS111821  Crassula connata A. G. Murdock 2004-3-19 218 Contra Costa Luzon Sycamore Ave. just east of Rodeo/Hercules where train crosses Highway 4 60 Comment
  UC606743  Crassula connata var. subsimplex Edward Lee 1936-4-19 1967 Contra Costa bluff at n.e. corner of island Red Rock Comment
  UC692556  Crassula connata var. subsimplex Mary L. Bowerman 1931-3-21 586 Contra Costa Sycamore Canyon Mt. Diablo, Sycamore Canyon 335 Comment
  UC23230  Cressa truxillensis Jos. Burtt Davy 1900-6-7 6678 Contra Costa Martinez Comment
  RSA201184  Croton californicus Peter Rubtzoff 1951-10-7 827 Contra Costa Along lower San Joaquin River, east of Antioch. Comment
  RSA289534  Croton californicus Edward Lee, Annetta Carter 1935-8-17 1626 Contra Costa Antioch. Comment
  UC765094  Croton californicus R. F. Hoover 1937-5-14 2113 Contra Costa Antioch sand-dunes Comment
  CDA35287  Croton californicus Chas. Lasser 1959-9-24 Contra Costa East of Byron, from Bixler Rd. to Old River. 0 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
  CDA32859  Crypsis schoenoides D. G. Kelch 2010-10-5 10 .421 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UC1618174  Crypsis schoenoides Barbara Ertter 1989-9-30 8866 Contra Costa 1 1/4 mi nw of Inspiration Point (Tilden Regional Park e of El Cerrito, East Bay Skyline National Recreation Trail (=Nimitz Way)); Tilden Regional Park, E Bay Skyline Nat'l Recreation Trail Comment
  UC1795843  Crypsis schoenoides Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14532 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. dried roadside pond, clay. Comment
  CAS-BOT-BC190079  Crypsis schoenoides Walter Knight 1977-7-20 s.n. Contra Costa On Briones Ridge, Briones Regional Park. 304 Comment
  CAS-BOT-BC361415  Crypsis schoenoides Peter Rubtzoff 1968-9-18 5964 Contra Costa North Gate Road, ca. 5 miles northwest of Mt. Diablo State Park north entrance. Comment
  UC691402  Cryptantha flaccida Mary L. Bowerman 1933-5-2 1955 Contra Costa below Pioneer Camp; Mount Diablo 762 Comment
  JEPS84746  Cryptantha micromeres J. Stratford 1981-6-8 Contra Costa Huckleberry Trail Huckleberry Botanic Regional Preserve Comment
  UC78683  Cryptantha microstachys Mrs. K. Brandegee May 1890 Contra Costa Brentwood Comment
  UC762463  Cryptantha microstachys R. F. Hoover 1938-5-4 3349 Contra Costa e of Tassajero Creek Comment
  JEPS67634  Cryptantha nevadensis Mary L. Bowerman 1932-3-27 1143 Contra Costa at base of Mitchell Rock Mount Diablo, Mitchell Rock Comment
  JEPS67770  Cryptantha nevadensis R. F. Hoover 1938-5-4 3348 Contra Costa e of Tassajero Creek 762 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
  UCR51833  Cuscuta californica P. A. Munz 1947-10-8 12200 Contra Costa Dunes near Antioch 8 Comment
  CDA33492  Cuscuta japonica Yost 2008-7-17 PDR# 1454020 Contra Costa Antioch; 5124 Paddock Ct. 0 Comment
  UCD126364  Cuscuta pacifica var. pacifica G. Thomas Robbins 1959-9-13 4163 Contra Costa northeastern edge of San Pablo Bay, just east of Hercules. Comment
  OBI14800  Cuscuta salina G. Thomas Robbins 1959-9-13 4161 Contra Costa On shores of San Pablo Bay, at the N edge of Pinole Comment
  UC562481  Cuscuta subinclusa Joseph P. Tracy 1932-9-10 10789 C Contra Costa Franklin Canyon 152 Comment
  UC562677  Cuscuta subinclusa Joseph P. Tracy 1932-9-10 10789 Contra Costa Franklin Canyon 152 Comment
  UC691856  Cuscuta subinclusa Mary L. Bowerman 1930-8-24 437 Contra Costa Mitchell Canyon Mount Diablo Comment
  JEPS78606  Cuscuta subinclusa Walter Knight 1978-10-4 3311 Contra Costa Browns Island Crooked Slough Comment
  UC615167  Cynoglossum grande Beryl O. Schreiber 1932-2-27 27 Contra Costa Redwood Canyon Comment
  SEINET3840900  Cyperus difformis Unknown 2006-9-15 6 .474 Contra Costa Martinez, Shell Avenue, between Pine Street and Harborview Drive 60 Comment
  UC2013054  Cyperus eragrostis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14919 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  UC2070507  Cyperus erythrorhizos Barbara Ertter with Jim Dunne, David Gowen, Lech Naumovich 2009-12-3 19803 Contra Costa Mudflats at upper (south) end of San Pablo Dam Reservoir northwest of Orinda. Comment
  CAS-BOT-BC113937  Cyperus odoratus Walter Knight; Irja Knight 1980-8-26 3769 Contra Costa Hercules. Comment
  UC1446057  Cystopteris fragilis Alan Smith with Ed Lee 1979-4-25 732 Contra Costa trail beyond Devil's Elbow toward saddle between Mt Diablo and North Peak; n side Mt. Diablo 1066 Comment
  UC692117  Cystopteris fragilis Mary L. Bowerman 1933-6-3 2243 Contra Costa summit Mt Diablo 1127 Comment
  UC1795750  Cytisus scoparius Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14678 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; grassland/scrub at northeast corner of area. Comment
  JEPS21826  Danthonia californica Louise Elsenius 1958-5-17 6 Contra Costa ne Terrace-Bates intersection; El Cerrito 60 Comment
  UC2070617  Danthonia californica Barbara Ertter 2002-5-16 17862 Contra Costa Richmond Field Station (UC-Berkeley). Comment
  JEPS112311  Datura wrightii Andrew G. Murdock 2004-5-28 308 Contra Costa Hercules - Carbon, along Highway 4 Comment
  CDA29514  Daucus pusillus D. G. Kelch, Troy MacGregor 2009-5-1 9 .275 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  CAS-BOT-BC287365  Deinandra Walter Knight 1977-7-24 s.n. Contra Costa Black Diamond Mines Regional Preserve. Nortonville Ridge 304 Comment
  UC1481555  Deinandra corymbosa Neil Havlik 1980-5-14 917 Contra Costa e side Pt. Pinole Regional Shoreline Comment
  UCD32433  Deinandra corymbosa Beecher Crampton 1950-6-20 596 Contra Costa Contra Costa County, 1 mile north of Richmond, Triangle Court. Comment
  UCD36025  Deinandra corymbosa Beecher Crampton 1949-6-5 470 Contra Costa along Highway 40, Pinole to San Pablo, above Garrity Creek, on top of West Hills. 30 Comment
  CAS-BOT-BC294013  Deinandra kelloggii Alice Eastwood 1927-5-19 14445 Contra Costa Byron Springs Comment
  CAS-BOT-BC294018  Deinandra kelloggii Mrs. Curran 1883-5-1 s.n. Contra Costa Antioch Comment
  JEPS12629  Deinandra kelloggii M. K. Curran May 1886 Contra Costa near Antioch Comment
  UC34625  Deinandra kelloggii Chesnut and Drew 1889-4-18 Contra Costa Antioch Comment
  UC990569  Deinandra kelloggii James I. McMurphy 1909-5-21 Contra Costa Antioch Comment
  CAS-BOT-BC294019  Deinandra kelloggii Vincent Jones 1920-8-28 s.n. Contra Costa Orwood 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
  UC2029061  Deinandra lobbii Barbara Ertter with Delia Taylor 2003-6-22 18225 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, ridge south of Arata Overlook Trail NE of park headquarters east of Somerville Road. Comment
  SEINET9288997  Delairea odorata Unknown 1999-12-20 1219291 Contra Costa Along Wildcat Canyon Rd., 1.9 mi NW of intersection of Wildcat Canyon Rd and Dam Rd. vicinity of Orinda. Comment
  JEPS105715  Delphinium hansenii subsp. hansenii David Gowen 2004-5-10 57 Contra Costa Round Valley Regional Preserve.North-facing slope above the main road through the park, ca. 1/2 mile west of the entry. Comment
  CAS-BOT-BC10306  Delphinium hesperium Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mt. Diablo Comment
  UCD84955  Delphinium hesperium Chuck Hughes 2010-5-19 227 Contra Costa About 0.5 mile south of Vasco Road. 184 Comment
  RSA721744  Delphinium hesperium Barbara J. Ertter 1995-5-29 14242 Contra Costa S side Mt Diablo, edge of open meadow in flats near head of Curry Creek along road to Sheepherderss Springs from Sloam Road. 427 Comment
  SEINET11268200  Delphinium hesperium subsp. hesperium Barbara Ertter 1998-5-13 16137 Contra Costa In hills south of Pittsburg, head of SE branch of Loughler Loop Trail.; 0 305 Comment
  CAS-BOT-BC10015  Delphinium hesperium subsp. pallescens John Thomas Howell 1931-5-12 6482 Contra Costa North side of Mt. Diablo Comment
  LA38169  Delphinium hesperium subsp. pallescens Lewis; Mehlquist 455 Contra Costa Just E of the Antioch Golf Couse Comment
  UC9202  Delphinium nudicaule W. H. Brewer 1862-5-7 1053 Contra Costa n slope Monte Diablo Comment
  UCD96542  Delphinium patens P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo Summit. Comment
  POM203934  Delphinium patens J. T. Howell 1931-3-10 5758 Contra Costa East side of Mt. Diablo 7 miles from Clayton on Livermore road. Comment
  RSA148120  Delphinium patens Harlan Lewis, C. Epling 1944-5-6 s.n. Contra Costa 5.7 miles S of Marsh Creek Road on the Beck road to Luieruiore. Comment
  CAS-BOT-BC116451  Delphinium patens subsp. patens H. L. Mason; Robert Ornduff 1957-4-11 10620 Contra Costa Curry Canyon 3.4 miles s. of Recreation Ground Comment
  CAS-BOT-BC116456  Delphinium patens subsp. patens J. T. Howell 1933-5-14 11279 Contra Costa Hills east of St. Mary's College Comment
  CAS-BOT-BC116457  Delphinium patens subsp. patens Alice Eastwood 1915-5-30 4497 Contra Costa Mt. Diablo Comment
  UC1084394  Delphinium patens subsp. patens G. Thomas Robbins 1937-4-25 141 Contra Costa hillside e La Vista Comment
  RSA624911  Delphinium recurvatum John A. Churchill 1974-4-15 s.n. Contra Costa Between Route K4 and railroad at Holey Road Comment
  UC1126067  Delphinium variegatum C. M. Belshaw 1936-5-8 2052 Contra Costa 1 3/4 mi ssw Mt. Diablo (summit) (Plot 4); Mount Diablo Quadrangle Comment
  UC199142  Delphinium variegatum Chesnut and Drew 1887-4-16 Contra Costa Clayton Comment
  CAS-BOT-BC192678  Deschampsia danthonioides Ira L. Wiggins 1930-4-17 4576 Contra Costa 1/4 mi S. of Byron Comment
  CAS-BOT-BC192679  Deschampsia danthonioides John Thomas Howell 1953-4-26 28937 Contra Costa Between Byron and Byron Hot Springs Comment
  CAS-BOT-BC192673  Deschampsia danthonioides Mary L. Bowerman 1935-6-28 3164 Contra Costa Chase Pond 548 Comment
  SEINET11676571  Deschampsia danthonioides I. L. Wiggins 1930-1 4576 Contra Costa 0.5 mi S of Byron Comment
  JEPS9557  Dicentra chrysantha W. L. Jepson 1921-11-19 9518 Contra Costa Mt. Diablo Comment
  UC33546  Dicentra chrysantha V. K. Chesnut before August, 1901 Contra Costa Mt. Diablo Comment
  UC615579  Dicentra chrysantha Beryl O. Schreiber 1933-10-5 933 Contra Costa Mount Diablo road; Mount Diablo Comment
  UC692178  Dicentra chrysantha Mary L. Bowerman 1930-6-10 318 Contra Costa across from and slightly below Muir Area (Meridian Peak); Mount Diablo, Meridian Peak Comment
  POM212448  Dicentra chrysantha Joseph A. Ewan 1933-10-15 8030 Contra Costa South slope of Mt. Diablo 1067 Comment
  CAS-BOT-BC500090  Dichelostemma capitatum Alice Eastwood 1921-4-10 10195 Contra Costa Willows Comment
  CAS-BOT-BC500091  Dichelostemma capitatum John Thomas Howell 1944-7-17 19831 Contra Costa Canyon of Snow Basin Creek Comment
  POM276989  Dichelostemma capitatum subsp. capitatum Lyman Benson 1931-3-18 2665 Contra Costa Martinez; Mt Range: South Coast; Watershed: Sacramento River. 91 Comment
  JEPS100059  Dichelostemma congestum G. Smick 2003-5-8 GAS 69 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC502553  Dichelostemma congestum Alice Eastwood 1915-5-30 4474 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC502180  Dichelostemma ida-maia E E Smith 1893-1-1 s.n. Contra Costa near Mount Diablo Comment
  SJSU1493  Diplacus aurantiacus D. J. Thompson 1954-5-2 Contra Costa between Pinole & Pittsburg Comment
  CAS-BOT-BC121844  Dirca occidentalis Charles M. Belshaw 1935-3-3 372 Contra Costa On NE slope of Bald Peak Comment
  CAS-BOT-BC238191  Dirca occidentalis James R. Shevock 2012-8-12 40655 Contra Costa San Francisco Bay Region. Tilden Regional Park, East Bay Regional Park District. Along Grizzly Peak Trail less than 0.25 mi from upper trailhead off Grizzly Peak Road 445 Comment
  OBI78484  Dirca occidentalis H. E. McMinn 1925-3-30 1402 Contra Costa Near summit Thornhill Rd and Skyline blvd Comment
  OBI3339  Dirca occidentalis Neil Havlik 1969-3-25 310 Contra Costa On the NE slope of Grizzly Peak 488 Comment
  RSA29241  Dirca occidentalis Joseph A. Ewan 1934-3-10 8643 Contra Costa 2 miles below Orinda Road bridge, Wildcat Canyon Comment
  SBBG26819  Dirca occidentalis J. A. Ewan 1934-3-10 8643 Contra Costa 2 mi below Orinda Rd bridge, Wildcat Cyn Comment
  SEINET12190184  Dirca occidentalis J. T. Gregory 1936-1 1043 Contra Costa W branch San Pablo Creek on Tunnel Road 3 mi E of Berkeley Comment
  UC3564  Disporum hookeri unknown 1862-5-16 1099 Contra Costa s of Mount Diablo Comment
  UC691997  Disporum hookeri Mary L. Bowerman 1933-4-22 1888 Contra Costa Mount Diablo, Curry-Cave Point trail Mount Diablo; , Curry-Cave Point trail 426 Comment
  CAS-BOT-BC208656  Distichlis spicata John Thomas Howell; Gordon H. True 1972-6-29 48925 Contra Costa Byron Hot Springs Road southeast of Byron Comment
  JEPS102900  Distichlis spicata Barbara Ertter, Chris Thayer 1996-10-25 15369 Contra Costa North Gate Road Mount Diablo 121 Comment
  JEPS111737  Dittrichia graveolens D. G. Kelch 2004-12-4 04 .346 Contra Costa Rodeo Shore 2 Comment
  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
  UC635473  Dodecatheon clevelandii subsp. patulum H. L. Mason 1934-4-4 8058 Contra Costa Marsh Creek Road Comment
  UC766267  Dodecatheon clevelandii subsp. patulum R. F. Hoover 1938-2-21 2749 Contra Costa Byron Hot Springs Comment
  RSA6497  Dodecatheon clevelandii subsp. patulum D. D. Keck 1933-4-2 1997 Contra Costa Vasco Rd., south of Vasco School. Comment
  UC1618109  Dodecatheon hendersonii Donald G. Nelson 1937-3-30 461 Contra Costa Along Marsh Creek Road between Clayton and Byron Comment
  UC1188738  Downingia insignis John H. Weiler 1961-4-9 6174 Contra Costa 3 mi w Byron (on the w 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
  UC1736620  Downingia insignis Dean W. Taylor 1991-5-2 11632 Contra Costa Byron Hot Springs Road, ca. 0.3 miles S of Holey Road, 39 Comment
  UC407372  Downingia insignis Ira L. Wiggins 1930-4-17 4570 Contra Costa 0.25 mi s Byron Comment
  RSA622149  Downingia insignis John A. Churchill 1974-4-15 7441521 Contra Costa Between Route K4 and railroad at Holey Road. Comment
  JEPS22441  Downingia pulchella Margaret Mallory 1958-5-3 51 Contra Costa West Sherman Acres 15 Comment
  CAS-BOT-BC159643  Drymocallis glandulosa var. glandulosa Barrett Anderson 1987-4-30 3493 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD. 125 Comment
  JEPS44306  Drymocallis glandulosa var. wrangelliana W. L. Jepson 1923-6-10 9995 Contra Costa Upper Marsh Creek Mt. Diablo, Upper Marsh Creek Comment
  CAS-BOT-BC70861  Dryopteris arguta O. N. Sanford 1878-11-24 s.n. Contra Costa Mt. Diablo Comment
  JEPS111936  Dryopteris arguta D. G. Kelch 2005-5-1 05 .190 Contra Costa Crockett - Edwards Canyon 150 Comment
  UC1015449  Dudleya caespitosa Reid Moran Contra Costa from the garden of Mrs. E. C. Dempster Orinda Comment
  JEPS25137  Dudleya farinosa G. Thomas Robbins 1959-5-16 4007 Contra Costa just s Pt. San Pablo (Potrero Hills); Richmond Comment
  UCD60759  Echinochloa colona Beecher Crampton 1965-9-26 7528 Contra Costa 2 miles south of Brentwood, junction Walnut Ave, and Marsh Creek Road. Comment
  CAS-BOT-BC197108  Echinochloa crus-galli John Thomas Howell; Gordon H. True 1972-6-29 48942 Contra Costa Along Byron Hot Springs Road where water has stood, southeast of Byron Comment
  CAS-BOT-BC197109  Echinochloa crus-galli Walter Knight 1978-8-27 3198 Contra Costa Contra Loma Regional Park near Antioch 30 Comment
  UC2027936  Eclipta prostrata Barbara Ertter 1996-9-19 15298 Contra Costa Antioch Marina, edge of Dow Marsh lands. Comment
  SEINET3892197  Eichhornia crassipes K. Thorne, L. Thorne; N. Thorne; J. Chandler 1986-7-27 4958 Contra Costa Franks Tract, along San Joaquin River delta. Sand Mound Slough. SE portion of Bethel Slough.; 0 610 Comment
  UC692626  Elatine californica Mary L. Bowerman 1935-7-22 3186 Contra Costa s side Meridian Peak (Hidden Pond); Mount Diablo Comment
  UC691974  Eleocharis macrostachya Mary L. Bowerman 1935-6-21 3151 Contra Costa S of Turtle Rock (tiny pool above main pond); Mount Diablo 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
  CAS-BOT-BC112799  Eleocharis macrostachya Miss Mary Leolin Bowerman 1938-5-28 3645 Contra Costa Maple Spring, on upper margin especially in the NW corner. Comment
  SEINET10747423  Eleocharis macrostachya Barbara J. Ertter 1991-9-28 Ertter 10836 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, dried mud flats at S en of reservoir, 91 Comment
  CAS-BOT-BC112218  Eleocharis rostellata Miss Mary Leolin Bowerman 1967-7-19 37175 Contra Costa NW end of Shell Ridge, just S of the highway (Heather Farm), by sulphurous stream. Comment
  POM357109  Elymus X gouldii Glenn A. Gorelick 1967-5-13 s.n. Contra Costa Point Richmond Comment
  CDA6124  Elymus X hansenii D. G. Kelch 2007-5-12 7 .29 Contra Costa Carquinez Strait; Franklin Ridge, S of Hwy 4 at McEwen Rd. Comment
  RSA722472  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
  CAS-BOT-BC203433  Elymus glaucus subsp. glaucus Mary L. Bowerman 1935-5-3 2964 Contra Costa Mount Diablo. Sloan Road 487 Comment
  CDA31735  Elymus multisetus D. G. Kelch 2002-5-24 2 .018 Contra Costa Carquinez Strait; Crockett. On hill S of San Pablo Ave ~0.4 miles W of Carquinez Bridge. Comment
  UCD62515  Elymus multisetus Beecher Crampton 1956-5-14 3386 Contra Costa Between the old coal mining towns of Somersville and Nortonville, 6.7 miles southwest of Antioch. 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
  SEINET12755579  Elymus triticoides J. B. Davy 1900-6-7 6658 Contra Costa Near Pacheco. Comment
  CDA2043  Elytrigia elongata T. C. Fuller 1961-9-13 7001 Contra Costa Hwy J4, ca. 4 miles southeast of Byron. 0 Comment
  JEPS78615  Epilobium brachycarpum Walter Knight, L. R. Heckard, and Bert Johnson 1978-9-28 3296 Contra Costa South Landing Browns Island Comment
  UC101786  Epilobium campestre Katharine Brandegee 1907-6-16 Contra Costa near S.P. Station; Antioch Comment
  CDA38092  Epilobium canum A. G. Murdock 2003-9-12 197 Contra Costa Carquinez Strait Region; Crockett - Tormey Headlands. At Superfund overlook. Comment
  CAS-BOT-BC166166  Epilobium canum subsp. canum John Thomas Howell 1925-11-1 1536 Contra Costa Moraga Ridge, Oakland Hills Comment
  POM32526  Epilobium canum subsp. canum A. D. E. Elmer 1903-07 4620 Contra Costa Mount Diablo Comment
  UC692453  Epilobium canum subsp. canum Mary L. Bowerman 1930-8-24 430 Contra Costa Mitchell Canyon Mount Diablo (at lower edge of chaparral where it extends nearly to streambed) Comment
  CAS-BOT-BC166161  Epilobium canum subsp. canum E. M. Zeile 1921-10-1 40 Contra Costa Vallejo Junction Comment
  CAS-BOT-BC166167  Epilobium canum subsp. canum N. Floy Bracelin 1941-8-17 1567 Contra Costa In Berkeley Hills Comment
  RSA209508  Epilobium canum subsp. canum Peter Rubtzoff 1951-10-7 814 Contra Costa 1 to 2 miles southwest of Moraga near the road Comment
  CDA38073  Epilobium ciliatum subsp. ciliatum A. G. Murdock 2004-5-28 295 Contra Costa Carquinez Strait; Refugio Valley. Comment
  UC1606307  Epilobium ciliatum subsp. ciliatum Barbara Ertter, Chris Thayer 1993-5-7 11693 Contra Costa on Wildcat Canyon Rd 1/2 mi se Inspiration Point (e of Tilden Park, marshy area); East Bay Municipal Utilities land, Hopkins Spring 304 Comment
  UC2027881  Epilobium ciliatum subsp. ciliatum Barbara Ertter 2000-9-30 17534 Contra Costa West side Mount Diablo, pond on China Wall Road ca 1/2 mile NW of Macedo Ranch. Comment
  CDA31168  Epipactis helleborine D. G. Kelch 2008-9-2 8 .305 Contra Costa Carquinez Strait.; Pinole Valley Park. Comment
  CAS-BOT-BC57134  Equisetum hyemale subsp. affine Walter Knight; Wayne Roderick; Steve Edwards; Bob Doyle 1978-9-19 3263 Contra Costa Browns Island, Alder Point Comment
  CAS-BOT-BC57764  Equisetum telmateia Mary L. Bowerman 1939-3-31 3737 Contra Costa Mount Diablo, Johny Walker Spring. 731 Comment
  UC2029181  Equisetum telmateia subsp. braunii Barbara Ertter with Alan Prather 2003-6-7 18202 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, creek alongside west end Stone Corral Trail, south of Highland Ridge Trail junction. 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
  POM300620  Equisetum telmateia var. braunii Mary L. Bowerman 1939-3-31 3737 Contra Costa Johnny Walker Spring. 732 Comment
  SJSU10471  Eragrostis curvula R. V. Scott 1972-3-27 Contra Costa 5 mi NW of San Ramon Comment
  UCD63093  Eragrostis curvula Beecher Crampton 1965-9-29 7526 Contra Costa 5 miles south of Brentwood Vasco Road and Camino Vaqueros. Comment
  JEPS120294 Image available Eriastrum ertterae David Gowen 2005-7-1 471 Contra Costa Lime Ridge Open Space. South of summit near power line area. Comment
  RSA0120805  Eriastrum pluriflorum subsp. pluriflorum Brandegee 1883-06 s.n. Contra Costa Antioch. Comment
  UC1543101  Ericameria linearifolia Donald G. Nelson 1937-4-18 503 Contra Costa on March Creek Road in canyon between Clayton and Byron (near stream along highway, dry sandy clearing near wood) Comment
  UC186077  Ericameria linearifolia K. Brandegee May 1886 Contra Costa Antioch Comment
  UC36565  Ericameria linearifolia F. P. McLean 1875-3-1 Contra Costa Mt. Diablo Comment
  UC697206  Ericameria linearifolia Mary L. Bowerman 1938-5-28 3649 Contra Costa Silver Creek Nook Mount Diablo, Silver Creek Nook (North Road, peeping out from under a willow) 640 Comment
  UC482974  Erigeron foliosus var. franciscensis Mrs. G. Earle Kelly 1932-7-20 Contra Costa after junction on mountain road Mount Diablo Comment
  JEPS108352  Erigeron philadelphicus var. philadelphicus David Gowen 2005-3-31 220 A Contra Costa Valley east of Sibley Regional Preserve boundary. Growing along stream. Comment
  RSA401488C  Eriodictyon californicum Cora Mae Life 1923-7-4 95 Contra Costa Mt Diablo. Comment
  UC35509  Eriodictyon californicum F. P. McLean March, 1875 Contra Costa Mt. Diablo Comment
  UC691670  Eriodictyon californicum Mary L. Bowerman 1930-6-10 315 Contra Costa Mount Diablo Meridian Peak Summit (Meridian Peak Summit); , Meridian Peak Summit Comment
  UC691672  Eriodictyon californicum Mary L. Bowerman 1932-9-3 1530 Contra Costa Mount Diablo , Muir Area (Burn (1931)) Comment
  POM196479  Eriogonum J. T. Howell 1929-9-21 7392 Contra Costa Marsh Creek Road 8 miles southeast of Clayton Comment
  JEPS108225  Eriogonum covilleanum David Gowen 2005-5-6 281 Contra Costa Mt. Diablo State Park. Talus slope on the south side of North Peak. 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
  UC692149  Eriogonum inerme Mary L. Bowerman 1935-6-1 3112 Contra Costa largest ridge between Ransom Point and Mitchell-Pine divide; Mt. Diablo 1082 Comment
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May 14 2019
  UC692151  Eriogonum inerme Mary L. Bowerman 1931-6-4 920 Contra Costa summit of Meridian Peak Mt. Diablo, Meridian Peak Comment
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May 14 2019
  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-BC259522  Eriogonum luteolum var. luteolum Robert F. Hoover 1937-9-2 2714 Contra Costa Lower Marsh Creek canyon 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
  JEPS112018  Eriogonum nudum subsp. nudum Dean G. Kelch and Andrew G. Murdock 2004-5-28 AGM 293 Contra Costa Pinole Peak. Comment
  JEPS107089  Eriogonum nudum var. auriculatum Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14675 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; grassland/scrub at northeast corner of area. Comment
  UC691129  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-17 1585 Contra Costa west fork of west fork Donner Canyon; Mount Diablo 335 Comment
  UC692047  Eriogonum nudum var. auriculatum Mary L. Bowerman 1931-10-23 1062 Contra Costa Riggs Canyon Mount Diablo Comment
  UC692203  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-24 1593 Contra Costa flat-topped ridge above Mitchell Rock; Mount Diablo 441 Comment
  CAS-BOT-BC268914  Eriogonum nudum var. auriculatum John Thomas Howell 1929-9-21 4393 Contra Costa On Marsh Creek Road 8 miles se. of Clayton Comment
  CAS-BOT-BC269820  Eriogonum nudum var. psychicola Jerry A. Powell 1962-8-19 3082 Contra Costa Ca. 2 miles east of Antioch Comment
  UC692195  Eriogonum nudum var. pubiflorum Mary L. Bowerman 1932-9-17 1586 Contra Costa Donner Canoyn, w fork toward mouth Mount Diablo Comment
  JEPS102909  Eriogonum roseum Barbara Ertter with Tony Morosco 1998-10-18 16436 Contra Costa NE corner of Lime Ridge recreation Area Mount Diablo 182 Comment
  UC768654  Eriogonum roseum R. F. Hoover 1937-9-2 2712 Contra Costa 2 mi s Antioch Comment
  UC6491 Image available Eriogonum truncatum W. H. Brewer 1862-5-29 1186 Contra Costa Camp 71, Marsh's Ranch, Contra Costa Co. Comment
  JEPS108318  Eriogonum umbellatum var. bahiiforme David Gowen 2005-5-29 399 Contra Costa West of Morgan Territory Rd. and the main entrance to Morgan Territory Regional Preserve. Rocky area west of summit of hill 2581 (Tassajara Pk.?). Comment
  UC306913  Eriogonum umbellatum var. bahiiforme A. D. E. Elmer July, 1903 4547 Contra Costa Mt. Diablo Comment
  POM301036  Eriophyllum confertiflorum Mary L. Bowerman 1933-6-3 2224 Contra Costa 2 miles by road from North Gate Comment
  JEPS75549  Eriophyllum confertiflorum var. confertiflorum P. F. Yorks 1974-6-16 176 Contra Costa on Hampton Road 1.6 km s Bear Creek Road (n of Briones Reservoir); Hampton Road Natural Reserve 180 Comment
  UC196644  Eriophyllum jepsonii J. W. Congdon 1896-5-29 Contra Costa Mt. Diablo Comment
  UC697145  Eriophyllum jepsonii Mary L. Bowerman 1936-5-6 3409 Contra Costa Uncle Sam Canyon 304 Comment
  JEPS34599  Eriophyllum lanatum var. achilleoides W. L. Jepson 1891-5-24 14563 Contra Costa Mt. Diablo Comment
  UC1118235  Eriophyllum lanatum var. achilleoides C. M. Belshaw 1936-5-8 2065 Contra Costa Plot 5 Mount Diablo Quadrangle, Mt. Diablo (se slope of mt.) Comment
  UC31674  Eriophyllum lanatum var. achilleoides W. L. Jepson May 22 1891-May 23 1891 Contra Costa Mt. Diablo Comment
  UC507133  Eriophyllum lanatum var. achilleoides Lincoln Constance 1933-6-25 E 101 Contra Costa just below summit on south slope Mount Diablo 1158 Comment
  UC691668  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1935-5-30 3097 b Contra Costa Eagle Point ridge = between the two n ridges which converge at Twin Peaks; Mt. Diablo, Eagle Point ridge 350 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
  POM301020  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1938-6-14 3687 Contra Costa Rocky roadside bank 0.3 mile below Muir Area 960 Comment
  UC134928  Eriophyllum lanatum var. achilleoides Katharine Brandegee 1907-6-16 Contra Costa hills near Antioch Comment
  UC507051  Eriophyllum lanatum var. achilleoides H. K. Sharsmith and C. W. Sharsmith 1933-4-30 E 17 Contra Costa Black, Hills; Mount Diablo 304 Comment
  UC1795733  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
  CDA29765  Erodium botrys D. G. Kelch, Troy MacGregor 2009-5-1 9 .266 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  CDA8346  Erodium botrys D. G. Kelch, A. G. Murdock 2005-4-2 05 .104-B Contra Costa Carquinez Strait; EBRP. Crockett Hills Staging Area. Crockett. Comment
  UC17071  Erodium macrophyllum W. H. Brewer 1862-5-10 1067 Contra Costa near Kirker Pass Comment
  CHSC21643  Erodium moschatum Willis Ball 1975-3-2 463 Contra Costa Contra Loma Regional Park. In area #1. In island in middle of main parking lot on s side of lake. 38 Comment
  JEPS15974 Image available Eryngium aristulatum var. aristulatum W. L. Jepson 1895-9-7 14275 Contra Costa e of Bald Peak; Orinda 121 Comment
  POM133545  Eryngium aristulatum var. aristulatum Katherine Brandegee 1907-5-16 s.n. Contra Costa [Unspecified] Comment
  UC1606293  Eryngium articulatum Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10710 Contra Costa n. Pittsburg (Browns Isl., near confluence of Sacramento & San Joaquin rivers, opposite Pittsburg Marina, at water's edge (Botany Cove)); Browns Isl. Comment
  CDA38314  Eryngium jepsonii D. G. Kelch 2003-6-22 3 .091 Contra Costa Carquinez Strait Region; Pt. Costa - Shore: Above Pt. Costa (above road between McEwen and EBRP staging area). Comment
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Dec 13 2016
  CHSC67627  Eryngium vaseyi James D. Jokerst 1989-3-28 3062 Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  UC1122965  Eryngium vaseyi B. Schreiber 1937-6-12 2400 Contra Costa Byron Byron Quad., Byron 15 Comment
  UC1745539  Eryngium vaseyi Annetta M. Carter 1951-5-13 3057 Contra Costa 3.3 mi. S of Byron. Comment
  CAS-BOT-BC40768  Erysimum capitatum G. B. Rossbach; R. P. Rossbach 1938-6-5 858 a Contra Costa Along tidal estuary of San Joaquin River just east of Antioch. Comment
  CAS-BOT-BC41526  Erysimum capitatum H. L. Mason 1933-4-9 7189 Contra Costa East of Antioch along the San Joaquin River. 12 Comment
  POM272844  Erysimum capitatum var. angustatum H. L. Mason 1933-4-9 7189 Contra Costa East of Antioch along the San Joaquin River. 12 Comment
  RSA39907  Erysimum capitatum var. angustatum P. A. Munz 1947-10-8 12205 Contra Costa Antioch 8 Comment
  UC1034729  Erysimum capitatum var. capitatum G. B. and R. P. Rossbach 1938-6-5 858 Contra Costa low sand dunes along tidal estuary of river just e San Joaquin River Comment
  UC534852  Erysimum capitatum var. capitatum H. L. Mason 1933-4-9 7189 Contra Costa sand hills along river e Antioch; San Joaquin River 12 Comment
  UCD114997  Erysimum capitatum var. capitatum R. F. Hoover 1935-3-10 s.n. Contra Costa Antioch. Comment
  UC2028070  Erysimum capitatum var. capitatum Barbara Ertter with Tony Morosco 1998-4-12 16003 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UCD84944  Eschscholzia californica Chuck Hughes 2010-3-29 216 Contra Costa About 0.7 mile south of Vasco Road. 238 Comment
  JEPS112429  Eucrypta chrysanthemifolia C. Thayer, J. Dunne 1997-3-27 Contra Costa 91 Comment
  UC592185  Eucrypta chrysanthemifolia var. chrysanthemifolia H. L. Mason 1925-3-10 1292 Contra Costa Mount Diablo Comment
  UC691713  Eucrypta chrysanthemifolia var. chrysanthemifolia Mary L. Bowerman 1932-5-6 1408 Contra Costa Mitchell Canyon floor; Mount Diablo 243 Comment
  UC2027960  Euphorbia maculata Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15666 Contra Costa Miller Knox Regional Shoreline south of Richmond, parking area for Richmond Ramblers. Comment
  UCD142623  Euphorbia maculata Terri Williamson 1990-5-22 67 Contra Costa Pleasant Hill, 212 Poshard St. 12 Comment
  CDA35612  Euphorbia oblongata V. Guise 2011-5-2 PDR# 1649668 Contra Costa Danville; 2600 Finley Road. 0 Comment
  UCR247571  Euphorbia oblongata Deviney 2008-4-18 s.n. Contra Costa Pacheco, Waterbird Way and Hwy 680 Comment
  CDA4844  Euphorbia oblongata T. C. Fuller 1961-7-6 6585 Contra Costa Carquinez Strait; Alhambra Valley, Highway 4, 0.5 mile west of Glen Frazier Station, ca. 4 miles west of Martinez. 0 Comment
  OBI5339  Euphorbia oblongata T. C. Fuller 1961-7-6 6585 Contra Costa On bench above crk, Alhambra Valley, hwy 4, 0.5 mi W of Glen Frazier Station, ca 4 mi W of Martinez 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
  UC199008  Euphorbia spathulata Chesnut and Drew 1889-4-18 Contra Costa Brentwood Comment
  UCD159505  Euthamia occidentalis D. S. Park 2010-9-11 253 Contra Costa Waterfront Rd. Growing in ditch along roadside. Disturbed. Wet. 5 Comment
  CAS-BOT-BC278177  Festuca D. E. Breedlove 1971-5-14 19339 Contra Costa Along Sierra Vista Way, Lafayette Comment
  JEPS127231  Festuca microstachys var. pauciflora Lowell Ahart, Josephine Guardino 2016-4-19 20792 Contra Costa 2.3 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
  CDA33826  Filago pyramidata D. G. Kelch 2010-5-15 10 .125 Contra Costa Mt. Diablo. Trail from Juniper Camp to Deer Flat. 0 Comment
  UC691816  Foeniculum vulgare Mary L. Bowerman 1936-9-17 3546 Contra Costa n.w. Mt.Zion (roadside s. of substation, Mt. Diablo); Mt. Diablo Comment
  CAS-BOT-BC62925  Frangula californica subsp. tomentella H. E. McMinn s.n. Contra Costa Mt. Diablo. Comment
  CDA37274  Fraxinus velutina D. G. Kelch 2011-3-31 11 .077 Contra Costa Carquinez Region; Richmond; Hilltop Lake Park. Comment
  UC692002  Fritillaria affinis Mary L. Bowerman 1931-3-8 561 Contra Costa Mount Diablo, near mouth of Mitchell Canyon Mitchell Canyon; Mount Diablo, Mitchell Canyon Comment
  UCD121557  Galium andrewsii P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. Comment
  UC1143116  Galium andrewsii subsp. gatense C. M. Belshaw 1936-5-8 2058 Contra Costa se slope Mt. Diablo Quadrangle, Mt. Diablo (Plot 5) Comment
  UC691532  Galium andrewsii subsp. gatense Mary L. Bowerman 1930-6-7 283 Contra Costa summit Mount Diablo Comment
  JEPS99947  Galium aparine S. O'Neil 2003-3-11 SEO 15 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC691536  Galium aparine Mary L. Bowerman 1932-4-27 1374 Contra Costa canyon w Riggs Canyon; Mount Diablo, Oyster Ridge 289 Comment
  UCD121622  Galium aparine Robert C. Bechtel 1952-4-12 58 Contra Costa West side Mt. Diablo. 914 Comment
  LA208411  Galium californicum Joseph Andorfer Ewan; 1935-5-26 9299 Contra Costa Tufts in rock crevices and about outcrops. E slope Bald Peak, San Pablo Ridge 548 Comment
  JEPS112103  Galium parisiense D. G. Kelch 2003-3-21 03 .66 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 2 miles west of Martinez Contra Costa County CA. Grassy hill above cottonwood tree. Just south of end gate of Carquinez Scenic Drive 40 Comment
  JEPS112109  Galium porrigens var. porrigens D. G. Kelch 2004-5-2 04 .168 Contra Costa Crockett - Edwards Canyon 125 Comment
  JEPS75527  Galium porrigens var. porrigens P. F. Yorks 1974-4-6 126 Contra Costa on Hampton Rd ca 1.4 km s Bear Creek Road (n of Briones Reservoir); Hampton Road Natural Reserve 180 Comment
  JEPS14518  Galium tricornutum L. T. Dempster 1956-5-26 1005 Contra Costa hillside above Overhill Ct.; Orinda Comment
  UC697199  Gamochaeta ustulata Mary L. Bowerman 1942-6-1 3846 Contra Costa Lower Rock City Camp Mount Diablo Comment
  CAS-BOT-BC303366  Gamochaeta ustulata Mary L. Bowerman 1942-6-1 3846 Contra Costa Mt Diablo. Lower Rock City Camp Comment
  SBBG50835  Garrya elliptica M. Siri 1974-5-12 33 Contra Costa above old fire rd, E slope of W ridge, Wildcat Cyn, 0.5 mi N of Leneve, Richmond Comment
  UC692508  Garrya elliptica Mary L. Bowerman 1932-1-30 1081 Contra Costa Inner Black Hills Mount Diablo (nw corner of basin of ne fork of Sycamore Creek) Comment
  UC692509  Garrya elliptica Mary L. Bowerman 1931-5-31 908 Contra Costa Rock City Ridge (= Fossil Ridge) Mount Diablo (just back of crest of the s knoll of 1778 point) Comment
  CAS-BOT-BC200625  Garrya elliptica W. W. Carruth 1902-2-1 s.n. Contra Costa East Oakland Hills Comment
  CAS-BOT-BC200635  Garrya elliptica John Thomas Howell 1930-6-15 5304 Contra Costa NE. slope of Grizzley [Grizzly] Peak, Berkeley Hills Comment
  UCD35543  Garrya elliptica Beecher Crampton 1957-11-20 4651 Contra Costa Berkeley Hills. Contra Costa- Alameda County line. Comment
  CAS-BOT-BC169943  Garrya fremontii H. E. McMinn 170 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC169948  Garrya fremontii Lewis S. Rose 1954-6-29 54084 Contra Costa Mt. Diablo, summit 1170 Comment
  POM203166  Garrya fremontii L. S. Rose 1934-2-28 34041 Contra Costa Summit of Mt. Diablo. 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-BC282612  Gastridium phleoides Mary L. Bowerman 1935-7-22 3191 Contra Costa Hidden Pond, south side Meridian Peak, Mount Diablo Comment
  UCD66551  Gastridium phleoides Beecher Crampton 1956-5-14 3380 Contra Costa Head of Horse Valley, 5 miles S of Antioch. Comment
  UC585537  Gastridium ventricosum Virginia E. Long 1933-6-14 224 a Contra Costa ridge entering W Fork of Curry Cave trail canyon Mt. Diablo; , ridge entering W Fork of Curry Cave trail canyon Comment
  JEPS112350  Genista monspessulana Dean G. Kelch and Andrew G. Murdock 2004-4-11 04 .077 Contra Costa Crockett - Crolona Heights, County: Contra Costa; Crockett: W base of Crolona heights. Comment
  JEPS99600  Geranium molle Mary Bowerman 1978-4-17 Contra Costa Mount Diablo, Back Canyon. 259 Comment
  UC1861827  Geranium molle Barbara Ertter, Chris Thayer 1995-4-25 13985 Contra Costa Southeast side of Mt. Diablo northeast of Danville; on Sycamore Creek near junction of path from Knobcone Point Rd. 396 Comment
  RSA0029464  Geranium purpureum Barbara Ertter 2001-5-23 17651 Contra Costa Campus of UC Berkeley, southwest corner of Haviland Hall. 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
  RSA48957  Gilia achilleifolia Verne Grant, Alva Grant 1948-5-15 8504 Contra Costa Morage ridge, Oakland Hills, near Contra Costa-Alameda county line Comment
  UC2028999  Gilia achilleifolia Barbara Ertter 2000-3-30 16918 Contra Costa North side of Mount Diablo, open rocky area ca halfway down Back Canyon Trail from Murchio Gap. Comment
  JEPS30770  Gilia achilleifolia subsp. achilleifolia G. Thomas Robbins 1937-4-17 122 Contra Costa w facing slope near Point Richmond; near Point Richmond Comment
  JEPS69431  Gilia achilleifolia subsp. achilleifolia W. L. Jepson 1899-4-19 15066 Contra Costa Las Trampas Ridge Comment
  UC691601  Gilia achilleifolia subsp. multicaulis Mary L. Bowerman 1935-4-17 2839 Contra Costa West Road 2 mi from entrance Mount Diablo ((= North Rd.)); , West Road 289 Comment
  UC691646  Gilia capitata subsp. capitata Mary L. Bowerman 1933-6-7 2253 Contra Costa just e of saddle between Meridian and North Peaks; Mount Diablo, just e of saddle btw Meridian and North Peaks Comment
  RSA276842  Gilia capitata subsp. staminea James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  RSA566428  Gilia capitata subsp. staminea Peter L. Morrell, Donna S. Krause 1993-5-16 239 Contra Costa Contra Costa County, along sides of raod 100m W of 1701 Wilbur Ave, Antioch, betw Southern Pacific tracks and San Joaquin River (0.5 miles W of Hwy 4/160). Comment
  UC23834  Gilia capitata subsp. staminea W. H. Brewer 1800-1 1118 Contra Costa n Kirker Pass; n of Kirker Pass Comment
  RSA14955  Gilia clivorum L. S. Rose 1935-5-16 351 75 Contra Costa Mt. Diablo. Comment
  UC52464  Gilia clivorum H. M. Hall 1901-3-17 1652 Contra Costa Point Richmond Region of San Francisco Bay, Point Richmond Comment
  UC691676  Gilia clivorum Mary L. Bowerman 1935-4-26 2920 Contra Costa Summit Mount Diablo Mount Diablo, summit 1158 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
  UC2027812  Gilia clivorum Barbara Ertter with Stu Garrett 1997-3-29 15541 Contra Costa West side Mount Diablo, Mothers Trail. Comment
  UC691625  Gilia clivorum Mary L. Bowerman 1933-5-3 1976 -2 Contra Costa due s summit Mount Diablo (Chaparral burn (1931)); Mount Diablo, due s of summit 731 Comment
  UCSB5069  Gilia clivorum Kamb, Peter; Chisaki, Francia 1950-3-18 Contra Costa Head of Pine Canyon; Mount Diablo 533 Comment
  UCR124270  Gilia multicaulis L. S. Rose 1935-5-16 35175 Contra Costa Mt. Diablo Comment
  UC691597  Gilia tricolor subsp. tricolor Mary L. Bowerman 1935-4-19 2864 Contra Costa West Road = North Road 6.3 mi from entrance Mount Diablo (Mount Diablo, above Pepperwood Spring); Mount Diablo, above Pepperwood Spring 609 Comment
  SEINET10464449  Githopsis diffusa subsp. robusta Bowerman 1933-6-7 BOWERMAN 2260 Contra Costa North Peak; Bare rocks by register Comment
  SEINET10464451  Githopsis diffusa subsp. robusta Bowerman 1935-5-3 BOWERMAN 2952 Contra Costa Rock City Ridge (Fossil Ridge): hillside below the Jungle of the Garden Gods 488 Comment
  SEINET10972175  Githopsis diffusa subsp. robusta Alice Eastwood 1915-5-30 Eastwood s.n. Contra Costa Comment
  SEINET10840136  Githopsis specularioides Mason 1928-4-29 Mason 4429 Contra Costa Sycamore Canyon, south slope of Mount Diablo 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
  JEPS112378  Glycyrrhiza lepidota Dean G. Kelch and Andrew G. Murdock 2003-6-2 84 Contra Costa Martinez; County: Contra Costa; Near waterfront west end entrance. Comment
  JEPS64809  Glycyrrhiza lepidota W. L. Jepson May 23 1891-May 24 1891 13599 Contra Costa Mt. Diablo Comment
  UC32009  Gnaphalium palustre W. H. Brewer 1862-5-26 1172 Contra Costa near Mount Diablo Comment
  UC697200  Gnaphalium palustre Mary L. Bowerman 1935-6-28 3168 Contra Costa s of summit Mount Diablo (by Old Government trail); , Chase Pond 548 Comment
  UC35376 Image available Godetia blasdalei W. C. Blasdale 1893-7-11 Contra Costa Point Isabel Comment
  CDA15251  Grindelia camporum G. F. Hrusa, D. Crowe 1998-5-8 14382 Contra Costa Sacramento Delta; Dow Ecological Reserve on Dow Chemical property at Pittsburg. Comment
  SEINET266960  Grindelia camporum var. camporum Meredith A. Lane 1986-9-8 3104 Contra Costa At norther city limit of Pinole along San Pablo Blvd. 15 Comment
  CAS-BOT-BC305218  Grindelia hirsutula Ira L. Wiggins 1930-4-17 4577 Contra Costa Near Byron 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
  JEPS25016  Grindelia hirsutula G. Thomas Robbins 1958-10-2 3941 Contra Costa just w Carlson Blvd. (near Stege railroad siding, along Southern Pacific Railroad); Richmond Comment
  JEPS41884  Grindelia hirsutula W. L. Jepson 1895-9-14 Contra Costa Walnut Creek Comment
  UC2013035  Grindelia hirsutula Barbara Ertter with Travis Columbus 1990-6-10 9099 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; trail heading down ridge on N side of Briones Peak, at junction with Spengler Trail. Comment
  UC2042497  Grindelia hirsutula Barbara Keller 2007-7-10 Contra Costa Mt. Diablo State Park, along Summit Rd. Comment
  UC691867  Grindelia hirsutula Mary L. Bowerman 1931-6-2 916 Contra Costa ridge extending n from North Peak (Mount Diablo); , North Peak 822 Comment
  CAS-BOT-BC305250  Grindelia hirsutula John Thomas Howell 1932-10-8 10796 Contra Costa Tidal flat at mouth of Rodeo Creek Comment
  UC2028054  Grindelia hirsutula var. hirsutula Barbara Ertter with Amy Rusev 1998-1-17 15905 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry [subsequently developed] on south side of Ygnacio Valley Road. Comment
  UC10960  Guillenia flavescens unknown 1865-1 Contra Costa Mt. Diablo region Mt. Diablo Comment
  UC691137  Guillenia flavescens Mary L. Bowerman 1935-4-17 2842 Contra Costa 2 mi from West road (=North Rd.) entrance (ridge w of chaparral, immediately e of section line); Mount Diablo 304 Comment
  JEPS54093  Guillenia lasiophylla W. L. Jepson 1921-5-22 9219 Contra Costa s slope Mt. Diablo 792 Comment
  UC10944  Guillenia lasiophylla W. H. Brewer 1862-4-24 987 Contra Costa Camp 68 Martinez Comment
  UC1118612  Gutierrezia californica G. T. Nordstrom 1937-10-28 1406 Contra Costa 1.6 mi nne Somersville; Mt. Diablo Quad. 182 Comment
  UC1051002  Hebe buxifolia N. Floy Bracelin 1943-7-19 2549 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  UC2032809  Hedera helix Doran, Andrew Scott 2012-3-20 679 Contra Costa Brooks island loading dock, North side of island. Just above high tide mark. Comment
  CAS-BOT-BC306337  Helenium John Thomas Howell 1926-1-16 1626 Contra Costa San Leandro Canyon, Oakland Hills Comment
  UC32237  Helenium bigelovii Jos. Burtt Davy 1900-6-7 6671 Contra Costa near Martinez Comment
  CAS-BOT-BC314697  Helianthella californica var. californica Paul F. Covel 1936-4-19 233 Contra Costa Hilltop above L. Trampas Cn. Comment
  JEPS111691  Helianthella castanea D. G. Kelch 2004-3-12 04 .32 Contra Costa Pinole Valley Hillside and canyon above Wright Road. Off of Pinole Valley Road 220 Comment
  JEPS85476  Helianthella castanea Leonora M. Ellis 1990-5-11 Contra Costa w Alamo (Horseman's Canyon and canyon to the w); Tice Valley 228 Comment
  UC194922  Helianthella castanea H. M. Hall 1916-5-31 10137 Contra Costa n slope of summit Mt. Diablo 1158 Comment
  UC57441  Helianthella castanea H. M. Hall 1901-4-5 1733 Contra Costa Mt. Diablo Region of San Francisco Bay, Mt. Diablo Comment
  UC691738  Helianthella castanea Mary L. Bowerman 1930-6-10 301 Contra Costa Summit Meridian Peak; Mount Diablo Comment
  UC88881  Helianthella castanea Alice Eastwood 1897-5-31 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC305324  Helianthella castanea W. C. McCalla 1925-4-22 s.n. Contra Costa Leona Heights near Oakland Comment
  CAS-BOT-BC223919  Helianthemum scoparium W. W. Carruth 1901-5-1 s.n. Contra Costa Redwood Canon [Canyon], Chaparral Ridge Comment
  UC2028316  Helianthemum scoparium Barbara Ertter, Susan D'Alcamo 1998-6-12 16161 Contra Costa Summit Road to top of Mount Diablo. Comment
  UCR260817  Helianthus annuus D. Finley 1998-4-25 1- 07 Contra Costa San Francisco Bay Region, Lafayette, 2.5 miles at the crow flies west of highway 24 east in a residential area, on Lafayette Ridge behind 1212 Monticello Road 229 Comment
  CDA6550  Helianthus californicus D. G. Kelch, A. G. Murdock 2004-9-2 4 .332 Contra Costa Carquinez Strait Region; Pacheco Marsh. Marsh east of Martinez and I-680 and east of lone tree Marsh. Comment
  UC1618418  Helianthus californicus Barbara Ertter, Diane Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10719 Contra Costa west-most point opposite Pittsburg Marina (Browns Island n of Pittsburg near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  UC1795662  Helianthus californicus Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14628 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
  UC2070513  Helianthus californicus Barbara Ertter 2002-8-24 18034 Contra Costa Lower Perkins Canyon on NE base of Mount Diablo. Comment
  POM301045  Helianthus gracilentus Mary L. Bowerman 1935-5-22 3055 Contra Costa Mt. Diablo: Saddle west of Twin Peaks (Eagle Point ridge). Chapparal from saddle up to Twin Peaks (southwest face) and downwards into Uncle Sam Canyon. Comment
  SD71038  Heliotropium amplexicaule Peter Rubtzoff 1967-9-5 5881 Contra Costa University of California campus, Berkeley, on dry hillside at the edge of Haviland Hall parking lot. Comment
  JEPS111836  Heliotropium curassavicum A. G. Murdock 2004-6-4 327 Contra Costa Pacheco Marsh Near shore on back of dikes 2 Comment
  UCD151071  Heliotropium curassavicum var. oculatum James A. Neilson Jr. 1972-11-2 3610 Contra Costa Contra Costa County. Walnut Creek drainage. (Elevation estimated using Google Earth by label maker.) 1 Comment
  UCD36034  Heliotropium curassavicum var. oculatum Beecher Crampton 1949-7-15 486 Contra Costa Contra Costa County, below original site of Judsonville, head of Lone Tree Valley, along Sand Creek, just before coming to Lee Higgins Empire Ranch. 114 Comment
  CAS-BOT-BC305872  Helminthotheca echioides R. E. Frenkel 1964-2-22 365 Contra Costa On Giant Road, 0.4 mile north of ATSF RR crossing, Richmond 15 Comment
  OBI16238  Hemizonia congesta subsp. lutescens Robert F. Hoover 1969-9-1 11568 Contra Costa Between San Pablo and Pinole Comment
  UC1392954  Hemizonia congesta subsp. lutescens R. F. Hoover 1969-9-1 11568 Contra Costa between San Pablo and Pinole Comment
  CAS-BOT-BC306262  Hemizonia congesta subsp. lutescens H. M. Hall 1916-10-14 10282 Contra Costa Region of San Francisco Bay. Selby Comment
  CAS-BOT-BC314853  Hemizonia congesta subsp. luzulifolia L. R. Abrams 1910-10-9 4359 Contra Costa Between San Ramon and Dublin Comment
  CAS-BOT-BC314858  Hemizonia congesta subsp. luzulifolia R. F. Hoover 1937-9-2 2709 Contra Costa Walnut Creek Comment
  CDA33542  Hemizonia congesta subsp. luzulifolia D. G. Kelch 2010-11-28 10 .449 Contra Costa El Sobrante. Hill above the junction of San Pablo Dam Rd and El Portal Dr (Quail Hill). 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
  JEPS88687  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-8-24 30900 Contra Costa field border near Diablo Country Club; s base of Mt. Diablo Comment
  SEINET3840814  Hemizonia congesta subsp. luzulifolia Unknown 2006-7-14 6 .333 Contra Costa Between route 4 and Carbon road, east Rodeo 24 Comment
  UC473563  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1930-9-28 5488 Contra Costa 2 mi from Concord (on road to Walnut Creek) Comment
  CAS-BOT-BC314859  Hemizonia congesta subsp. luzulifolia David D. Keck 1932-7-7 1740 Contra Costa 10 miles S. of Brentwood on Vasco Road to Livermore, southerastern Contra Costa County Comment
  CAS-BOT-BC314861  Hemizonia congesta subsp. luzulifolia Mary L. Bowerman 1931-10-13 1061 Contra Costa Sycamore Valley west of Sycamore Creek, Mount Diablo Comment
  CAS-BOT-BC314866  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1925-12-6 1612 Contra Costa Ridge between Redwood Canyon and San Leandro Canyon, Oakland Hills Comment
  CAS-BOT-BC314867  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-8-24 30900 Contra Costa Near Diablo Country Club Comment
  CAS-BOT-BC314872  Hemizonia congesta subsp. luzulifolia D. E. Breedlove 1969-10-18 16707 Contra Costa Along the roadbank on Deer Hill Road near the junction with Happy Valley Road, Lafayette Comment
  CDA33546  Hemizonia fitchii Fisher, Deviney 2010-6-2 PDR# 1645252 Contra Costa Byron; Armstrong Road Extension 1/3 mile southeast of Vasco Rd. Comment
  RSA121592  Hemizonia fitchii H. S. Yates 1934-9-2 4086 Contra Costa 2 miles S of Mt. Diablo. 579 Comment
  RSA216763  Hemizonia lutescens Robert F. Hoover 1969-9-1 11568 Contra Costa Between San Pablo and Pinloe. Comment
  RSA81518  Hemizonia luzulifolia subsp. rudis James I. McMurphy 1909-9-24 s.n. Contra Costa San Ramon. Comment
  POM215122  Hemizonia parryi subsp. congdonii D. D. Keck 1933-11-2 2610 Contra Costa San Ramon, Crow Creek Canyon road, 0.5 miles from turnoff Comment
  POM181072  Hemizonia pungens subsp. pungens J. T. Howell 1930-9-28 5489 Contra Costa 2 miles from Concord on road to Walnut Creek. Comment
  POM53580  Hemizonia pungens subsp. pungens C. F. Baker 1903-4-27 2875 Contra Costa Byron. Comment
  RSA720838  Herniaria hirsuta subsp. cinerea Barbara Ertter, Lisa Schultheis 1995-4-27 14013 Contra Costa Lime ridge open space NW of Mt. Diablo in Walnut Creek; extension of Valley View road. 152 Comment
  RSA755660  Hesperevax sparsiflora Barbara Ertter 1991-5-5 9784 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, along spur road from Black Diamond Trail on ridge southeast of Coal Canyon 427 Comment
  UC1614098  Hesperevax sparsiflora var. sparsiflora Charles M. Belshaw 1935-6-24 779 Contra Costa 0.5 mi e Grizzly Peak (n-face of Bald Peak); Bald Peak Comment
  CAS-BOT-BC310191  Hesperevax sparsiflora var. sparsiflora John Thomas Howell 1930-4-22 4749 Contra Costa Bald Peak Comment
  CAS-BOT-BC167442  Hesperolinon breweri Herbert L. Mason 1936-6-14 s.n. Contra Costa Ridge running south of Mount Diablo, head of Marsh Creek Comment
  JEPS122860  Hesperolinon breweri Adam C. Schneider with C. Matt Guilliams 2014-5-29 557 Contra Costa Mt. Diablo State Park. Trail to Murchio Gap. Comment
  JEPS22969  Hesperolinon breweri Volney Rattan Jun 1886 Contra Costa Mt. Diablo Comment
  POM86814  Hesperolinon breweri Katherine Brandegee 1907-6-16 s.n. Contra Costa Hills betweeen Antioch and Marsh Creek, on easterly side of Mt. Diablo Comment
  UC311528  Hesperolinon breweri A. D. E. Elmer July, 1903 4545 Contra Costa Mount Diablo Comment
  UC558458  Hesperolinon breweri Herbert L. Mason 1936-6-14 Contra Costa ridge running s Mount Diablo (head of Creek); Marsh Creek Comment
  UC692702  Hesperolinon breweri Mary L. Bowerman 1930-6-22 356 Contra Costa Mitchell Canyon Mount Diablo Comment
  RSA91445  Hesperolinon breweri J. T. Howell 1942-7-19 s.n. Contra Costa Northeast of Deer Flat, Mount Diablo Comment
  UC692699  Hesperolinon californicum Mary L. Bowerman 1931-5-21 886 Contra Costa w Cave Point; Mount Diablo 579 Comment
  UC692700  Hesperolinon californicum Mary L. Bowerman 1933-6-14 2275 Contra Costa Inner Black Hills e Knobcone Point; Mount Diablo Comment
  UC35090  Hesperomecon linearis W. C. Blasdale 1893-5-13 Contra Costa Antioch Comment
  JEPS99982  Heteromeles arbutifolia G. Smick 2003-2-20 GAS 50 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  SEINET3840819  Heteromeles arbutifolia Unknown 2006-6-23 6 .322C Contra Costa West Valona, West of Zampa Bridge above San Pablo avenue, along the small stream draining north into the Western end of the Carquinez Strait 91 Comment
  UC87450  Heterotheca oregona var. scaberrima J. W. Congdon Sep 1886 Contra Costa Comment
Read comments
Apr 23 2007
  JEPS79318  Heterotheca sessiliflora subsp. echioides Edward Lee with Annetta Carter 1935-8-17 1624 Contra Costa Antioch; sand-dunes Comment
  UC692352  Heuchera micrantha var. erubescens Mary L. Bowerman 1933-6-14 2283 Contra Costa inner Black Hills (second gully w of n spur); Mount Diablo, Black Hills Comment
  CAS-BOT-BC203382  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
  CDA15278  Hirschfeldia incana G. F. Hrusa, D. Crowe, R. York 1998-7-17 14715 Contra Costa Sacramento Delta; E end of Dow Chemical property at Pittsburg. 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
  JEPS100138  Holocarpha heermannii A. Langston 2003-7-28 AL 80 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS12900  Holocarpha heermannii L. S. Rose 1941-10-13 41465 Contra Costa 1 mi e of Walnut Creek 50 Comment
  UC1069570  Holocarpha heermannii R. W. Lundh 1932-9-23 171 Contra Costa 1 mi sw Mt. Diablo; Mt. Diablo Quadrangle 914 Comment
  UC1598596  Holocarpha heermannii John Thomas Howell 1955-8-24 30901 Contra Costa near Diablo Country Club (s base of Mt. Diablo); Mt. Diablo Comment
  CAS-BOT-BC316050  Holocarpha heermannii Lewis S. Rose 1933-10-22 33387 Contra Costa Wildcat Canyon Comment
  CAS-BOT-BC325828  Holocarpha heermannii David D. Keck 1933-11-2 2622 Contra Costa 5 mi. S.E. of Clayton on Marsh Creek Road opposite Mt. Diablo Comment
  CAS-BOT-BC325829  Holocarpha heermannii John Thomas Howell 1930-9-28 5487 Contra Costa 1 mile from Walnut Creek on Walnut Avenue to Concord 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-BC325838  Holocarpha heermannii J McMurphy 1909-9-25 s.n. Contra Costa Creek below Alamo Comment
  CAS-BOT-BC325839  Holocarpha heermannii R. Bacigalupi 1922-9-24 s.n. Contra Costa Fields between Clayton and Mitchell Canyn, Mt. Diablo Comment
  CAS-BOT-BC325845  Holocarpha heermannii David D. Keck 1933-11-2 2622 Contra Costa 5 mi. E. of Clayton on Marsh Creek Road just opposite Mt. Diablo Comment
  RSA128986  Holocarpha heermannii Peter H. Raven 1950-7-5 2484 Contra Costa Deer Ridge, Mt. Diablo. 884 Comment
  RSA692602  Holocarpha heermannii Barbara Ertter 1990-9-10 9641 Contra Costa Briones Regional Park, Briones Hills S of Martinez, abundant on open grassy slopes throughout park, forming large yellow patches. Comment
  RSA721867  Holocarpha heermannii Barbara Ertter, Brad Olson, Dianne Lake, Seth Adams 1994-9-11 13096 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton. Comment
  UC1428043  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
  CAS-BOT-BC320222  Holocarpha macradenia Walter Knight; Irja Knight 1977-9-12 3159 Contra Costa At SE corner of Appian Way and Highway I-80. Pinole Comment
  RSA0008457  Holocarpha macradenia David Powers 1974-10-6 1001 Contra Costa Pinole, 100-300 feet east of Hwy 80 and 100-300 yards south of Appian Way Comment
  CAS-BOT-BC324617  Holocarpha virgata R. F. Hoover 1965-9-24 9648 Contra Costa Foothills west of Byron east of Kellogg Creek 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-BC324616  Holocarpha virgata R. F. Hoover 1969-8-29 11566 Contra Costa Raymond Road and Ames Street, Livermore Valley 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
  UC912326  Holocarpha virgata subsp. virgata Herbert L. Mason 1929-9-21 5431 Contra Costa 3 mi above Clayton (summit of grade, Marsh Creek Road) Comment
  UC12336  Holodiscus discolor Ivar Tidestrom 1895-6-1 Contra Costa Crockett Comment
  POM181466  Hordeum depressum I. L. Wiggins 1930-4-17 4578 Contra Costa 1/4 mi. S. of Byron 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
  CAS-BOT-BC284990  Hordeum depressum Ira L. Wiggins 1930-4-17 4569 Contra Costa 2 mi. east of Mountain House on road to Byron Comment
  CAS-BOT-BC284991  Hordeum depressum Niall McCarten; V. I. Dains 1986-6-1 0413748 114 Contra Costa E. of Byron Hot Springs Rd., East Contra Costa County Comment
  CDA9385  Hordeum jubatum D. G. Kelch 2000-4-9 0 .141 Contra Costa 2 miles S of Byron in field N of Holey Road. 0 Comment
  SD211511  Hordeum marinum subsp. gussoneanum Barbara Ertter, Jim Jokerst and Dave Magney 1989-4-5 8121 Contra Costa Southeast Contra Costa County: Alkalai sink West and adjacent to Clifton Court Forebay, circa15 airmiles Southwest of Stockton Comment
  SEINET4182779 Image available Hordeum marinum subsp. gussoneanum Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8140 Contra Costa Alkali sink West and adjacent Clifton Court Forebay, circa 15 air miles Southwest of Stockton 0 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
  UCD85808  Hordeum marinum subsp. gussoneanum Brandegee 1916-5-9 s.n. Contra Costa Byron Springs. Comment
  CAS-BOT-BC289562  Hordeum marinum subsp. gussoneanum Mary L. Bowerman 1931-5-13 846 Contra Costa Pine Canyon floor slightly more than a mile above the sulphur spring, Mount Diablo Comment
  POM205088  Hordeum murinum subsp. glaucum Jos Burtt Davy 1898-05 1730 Contra Costa Danville Comment
  UCD36911  Hordeum murinum subsp. glaucum Beecher Crampton 1956-5-14 3375 Contra Costa 5 miles south of Antioch, on Empire Mine Drive, at head of Deer Valley. Comment
Read comments
Aug 17 2011
  UC697126  Hordeum murinum subsp. leporinum Mary L. Bowerman 1933-5-8 2003 Contra Costa s face Fossil Ridge not far from but out of sight of South Entrance Mount Diablo; , s face Fossil Ridge 289 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
  RSA611285  Horkelia frondosa Joseph A. Ewan 1934-5-20 8926 Contra Costa Contra Costa County: Russelmann Park, N side Mt. Diablo Comment
  JEPS96251  Hydrocotyle verticillata Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10863 Contra Costa just w. Antioch marina (along levee at water's edge, accessed from marina, Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  JEPS1653  Hydrophyllum occidentale W. L. Jepson 1921-5-22 9209 Contra Costa Mt. Diablo 1158 Comment
  CAS-BOT-BC401301  Hypericum scouleri L. R. Abrams 1910-10-8 4347 Contra Costa Mt Diablo 914 Comment
  UC2028113  Hypochaeris glabra Barbara Ertter with Christopher Baysdorfer 1998-5-10 16108 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, roadside not far from Valley Vista trailhead. Comment
  UC407368  Hypochaeris glabra Ira L. Wiggins 1930-4-18 4596 Contra Costa Comment
  CAS-BOT-BC311408  Hypochaeris radicata R. E. Frenkel 1964-2-22 359 Contra Costa On Giant Road, 0.4 mile north of ATSF RR crossing, Richmond 15 Comment
  CAS-BOT-BC311409  Hypochaeris radicata R. E. Frenkel 1964-2-22 358 Contra Costa On Giant Road, 0.4 mile north ATSF RR crossing, Richmond 15 Comment
  CDA9229  Iris pseudacorus D. G. Kelch 1991-5-1 s.n. Contra Costa CA Delta; Pittsburg Marina Comment
  UC692080  Isoetes howellii Mary L. Bowerman 1935-6-28 3166 Contra Costa Chase Pond s. of summit Mt.Diablo (by Old Government trail, e. side of pond); , Chase Pond 548 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
  CAS-BOT-BC324756  Iva axillaris G. Thomas Robbins 1958-7-19 3909 Contra Costa Just south of Castro Point, San Francisco Bay, Richmond Comment
  CAS-BOT-BC324757  Iva axillaris Walter Knight; Irja Knight 1977-8-21 3156 Contra Costa Martinez Regional Shoreline, Martinez, east of Ferry Street, 100 yards form S.P. tracks Comment
  UCD133394  Iva axillaris Collector Unknown Date Unknown s.n. Contra Costa Exact location unknown. Comment
  JEPS111674  Jaumea carnosa D. G. Kelch 2003-8-13 03 .99 Contra Costa Martinez Marsh 0 Comment
  RSA756246  Jaumea carnosa Barbara Ertter, Elizabeth Neese 1988-10-15 7975 Contra Costa Salicornia marsh west of I-580 in El Cerrito, west side along Rydin Road north of Central Avenue. Comment
  UC1050492  Jovellana violacea N. Floy Bracelin 1942-5-24 1412 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  CHSC93636  Juglans californica var. hindsii Paul Kirk; Joe Callizo 2001-10-8 9 Contra Costa City of Lafayette Community Park, W side of Las Trampas Creek, 1 m E of backyard property line of home at 615 Burton Rd. 119 Comment
  JEPS58697  Juglans californica var. hindsii W. L. Jepson 1909-4-30 3114 Contra Costa in the sharp gulch upper Walnut Creek, Burton Ranch Comment
  JEPS8459  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; Las Trampas Creek 167 Comment
  UC1197943  Juglans californica var. hindsii Joseph P. Tracy 1933-12-1 13130 Contra Costa along creek between Lafayette and Moraga Comment
  UC583156  Juglans californica var. hindsii Lewis S. Rose 1936-4-24 36140 Contra Costa 5 mi e Clayton; Marsh Creek 60 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-BC102308  Juglans hindsii L. R. Abrams 1916-7-29 6306 Contra Costa Walnut Creek Comment
  UC2028644  Juglans hindsii Barbara Ertter with Chris Thayer 1996-10-25 15355 Contra Costa Northwest flank of Mount Diablo Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park 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
  JEPS127666  Juncus ambiguus Barbara Ertter with David Gowen and Michael Park 2017-5-2 22810 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  UC1619919  Juncus balticus Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10681 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers opposite Pittsburg Marina, marsh at edge of lagoon in center of w end of island); Browns Island Comment
  IRVC14055  Juncus balticus J. Lanier 1967-5-21 s.n. Contra Costa Tice Valley Comment
  JEPS112455  Juncus bufonius D. G. Kelch 2005-3-24 05 .51 Contra Costa Pt. Pinole near wharf 2 Comment
  UC2028372  Juncus bufonius var. bufonius Barbara Ertter 1998-6-20 16234 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo. Alkali Pond at Wiget Lane entrance. Comment
  UC691983  Juncus bufonius var. bufonius Mary L. Bowerman 1931-4-4 635 Contra Costa Mount Diablo, 2 mi by road from West Entrance = North Gate Mount Diablo Comment
  UC1819013  Juncus bufonius var. bufonius Barbara Ertter, Mary Bowerman et al. 1995-5-7 14040 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
  UC1795668  Juncus bufonius var. congestus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14037 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
  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
  POM300636  Juncus effusus subsp. pacificus Mary L. Bowerman 1938-6-30 3705 Contra Costa Plants of Mount Diablo; Indian Ceremonial Spring. Comment
  SD241642  Juncus gerardi subsp. gerardi Barbara Ertter, Steve Matson 2003-5-31 18175 Contra Costa Martinez Regional Shoreline, brackish marsh along Pickleweed Trail west of Arch Bridge. Comment
  SEINET3880292  Juncus nevadensis Kaye H. Thorne, L. Thorne; N. Thorne; J. Chandler 1986-7-27 4979 Contra Costa Franks Tract, along San Joaquin River delta. Sand Mound Slough. SE portion of Bethel Slough.; 0 610 Comment
  JEPS112438  Juncus occidentalis D. G. Kelch 2004-4-26 04 .144 Contra Costa Point Pinole 30 Comment
  UC1584658  Juncus occidentalis Jerry Powell 1989-3-26 1560 Contra Costa Point Molate Comment
  UCD141678  Juncus oxymeris Ann F. Johnson 1978-6-26 AN 50 Contra Costa Shore of San Joaquin River, PG and E site, Antioch Dunes. Comment
  UC691915  Juncus patens Mary L. Bowerman 1933-11-9 2469 Contra Costa West Sheepherders' Spring Mount Diablo 701 Comment
  JEPS102917  Juncus phaeocephalus var. paniculatus Barbara Ertter 1998-5-3 16061 Contra Costa wet meadow 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
  UC1157920  Juncus xiphioides Olive Dyer 1936-9-18 444 Contra Costa near Alvarado Park; Wildcat Canyon Comment
  UC1601855  Juncus xiphioides J. Burtt Davy 1897-9-4 4076 Contra Costa Stege Comment
  UC2029085  Juncus xiphioides Barbara Ertter 2000-7-16 17407 Contra Costa Pine Creek on WNW base of Mount Diablo Comment
  POM300638  Juncus xiphioides Mary L. Bowerman 1931-5-15 865 Contra Costa Lower Silver Spring. Comment
  SEINET191616  Juniperus californica L. S. Rose 1941-3-22 41052 Contra Costa Mt Diablo 914 Comment
  UC480589  Juniperus californica Carl Meyer 1928-2-22 282 Contra Costa Mt. Diablo Comment
  UCR162417  Juniperus californica David A. Charlet, T. Charlet, Elizabeth Charlet 1991-5-28 710 Contra Costa Mt. Diablo, 'Juniper Camp' 875 Comment
  JEPS70570  Koeleria macrantha W. L. Jepson 1918-6-5 7601 Contra Costa Donner Canyon Mt. Diablo; vicinity of San Francisco Bay, Mt. Diablo 533 Comment
  SEINET186056 Image available Koeleria macrantha V. E. Long 1933-6-14 223 a Contra Costa Mt. Diablo 457 Comment
  CDA7170  Lactuca serriola D. G. Kelch 2006-7-14 6 .331 Contra Costa Carquinez Strait; Along Marine Vista Ave immmediately west of Pacheco Slough. East of Martinez. Comment
  JEPS100180  Lactuca virosa A. Langston 2003-8-26 AL 86 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC340698  Lactuca virosa John Thomas Howell 1942-7-19 17040 Contra Costa Along trail west of Deer Flat, Mt. Diablo Comment
  CAS-BOT-BC340699  Lactuca virosa John Thomas Howell 1943-8-22 19310 Contra Costa Near head of San Leandro Creek Canyon 243 Comment
  JEPS99988  Lamarckia aurea G. Smick 2003-4-22 GAS 140 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UCD125108  Lamium amplexicaule Terri Williamson 1990-4-15 9 Contra Costa 212 Poshard St. Pleasant Hill. 12 Comment
  CAS-BOT-BC337978  Lasthenia californica Volney Rattan 1879-1-1 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC337979  Lasthenia californica Volney Rattan 1879-1-1 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC337973  Lasthenia californica Niall McCarten; V. I. Dains 1986-1-1 03231522 40 Contra Costa W of Camino Diablo & Kellogg Creek, East Contra Costa County 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
  POM11966  Lasthenia ferrisiae Katherine Brandegee s.n. Contra Costa Byron Hot Springs. Comment
  JEPS18258  Lasthenia fremontii Peter H. Raven with Mason, Stone, Ornduff, Kuijt 1957-4-4 10587 Contra Costa 3 mi s of Byron Comment
  UC1301067  Lasthenia fremontii Helen K. Sharsmith 1963-4-7 5300 Contra Costa vernal pools near Byron 7 Comment
  UC762046  Lasthenia fremontii R. F. Hoover 1937-5-14 2118 Contra Costa Byron Hot Springs Comment
  CAS-BOT-BC352771  Lasthenia glabrata subsp. glabrata John Thomas Howell 1933-5-14 11240 Contra Costa St. Mary's College Comment
  JEPS33979  Lasthenia glabrata subsp. glabrata W. L. Jepson 1925-4-26 10686 Contra Costa in Black Hills Mt. Diablo, Black Hills Comment
  POM301000  Lasthenia glabrata subsp. glabrata Mary L. Bowerman 1933-5-5 2000 Contra Costa Alamo Canyon, toward mouth. 305 Comment
  JEPS73690  Lasthenia gracilis L. R. Heckard 1968-3-5 1759 Contra Costa Byron 7 Comment
  UC62988  Lasthenia gracilis H. M. Hall 1901-4-5 1744 Contra Costa lower slopes Mt. Diablo Comment
  CAS-BOT-BC361124  Lasthenia microglossa Mary L. Bowerman 1936-4-23 3405 Contra Costa Mount Diablo: Mitchell-Pine divide, northernmost 2750 ft. point 838 Comment
  UC2070483  Lasthenia microglossa Barbara Ertter 2003-3-28 18116 Contra Costa Round Valley Regional Preserve, ca 1 mile west of trailhead. Comment
  CAS-BOT-BC366304  Lasthenia minor Alice Eastwood 1914-3-14 3830 Contra Costa Byron Springs Comment
  UC130780  Lasthenia minor T. S. Brandegee 1892-5-1 Contra Costa Antioch Comment
  CDA42366  Lathyrus latifolius D. G. Kelch, Vince Guise 2012-7-26 12 .24 Contra Costa Wildcat Canyon Park, Alvarado Unit. Comment
  CDA29423  Lathyrus latifolius Niang, Roybal 2009-5-19 s.n. Contra Costa In the vicinity of San Pablo. East Bay Regional Park, in Wildcat Canyon. 0 Comment
  UC15364  Lathyrus vestitus Ivar Tidestrom 1893-4-15 Contra Costa Sheep Island Comment
  UCD35904  Lathyrus vestitus Beecher Crampton 1966-4-26 7667 Contra Costa ca. 2.5 miles west of Martinez on the road to Crockett. Comment
  JEPS55360  Lathyrus vestitus var. vestitus W. L. Jepson 1922-7-9 9733 Contra Costa El Cerrito, Richmond Comment
  UC692312  Lathyrus vestitus var. vestitus Mary L. Bowerman 1933-6-3 2239 Contra Costa Ransom Point ridge Mount Diablo Comment
  UC692675  Lathyrus vestitus var. vestitus Mary L. Bowerman 1931-3-7 552 Contra Costa by South Road just below junction Mount Diablo Comment
  UC1795699  Lavatera assurgentiflora Barbara Ertter, Rich Rabeler 1994-6-6 12822 Contra Costa Point Isabel in south Richmond; acacia copse at edge of bay at south side of point. Comment
  SEINET7085230  Lavatera olbia Steven R. Hill 2010-7-19 38531 Contra Costa Residence of Kristin Yanker-Hansen, 569 Contada Circle, Danville [94526]. Coordinate Datum: WGS84/NAD83. 122 Comment
  CAS-BOT-BC323926  Layia chrysanthemoides Alice Eastwood 1914-3-14 3820 Contra Costa Byron Springs Comment
  CAS-BOT-BC323927  Layia chrysanthemoides Alice Eastwood 1921-4-18 10257 Contra Costa Antioch Comment
  OBI15877  Layia chrysanthemoides Robert F. Hoover 1967-4-28 10506 Contra Costa Byron Hot Springs Comment
  POM181462  Layia chrysanthemoides I. L. Wiggins 1930-4-17 4572 Contra Costa 1/4 mi. S. of Byron. Comment
  JEPS75555  Layia gaillardioides P. F. Yorks 1974-4-19 130 Contra Costa n of Briones Reservoir ca. 1.4 km s of Bear Creek Road; Hampton Road Natural Reserve 170 Comment
  UC2042770  Layia gaillardioides Barbara Ertter with Chris Thayer 1993-5-7 11706 Contra Costa Ca 1/2 mile north of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park. Comment
  UC30649  Layia gaillardioides W. L. Jepson 1891-5-23 Contra Costa Mt. Diablo Comment
  UC691555  Layia gaillardioides Mary L. Bowerman 1933-4-22 1904 Contra Costa ridge w of upper end of Curry-Cave Point trail; Black Hills Comment
  UC2027818  Layia gaillardioides Barbara Ertter with Stu Garrett 1997-3-29 15531 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  CAS-BOT-BC321083  Layia glandulosa A. A. Heller 1908-4-16 8896 Contra Costa E of Antioch 22 Comment
  JEPS40029  Layia glandulosa H. L. Mason 1932-3-20 Contra Costa Antioch Comment
  UC468861  Layia glandulosa W. C. Blasdale 1893-5-13 Contra Costa Antioch Comment
  UC761860  Layia glandulosa R. F. Hoover 1935-3-10 315 Contra Costa Antioch Comment
  UC912575  Layia glandulosa Herbert L. Mason 1929-3-31 5155 Contra Costa at Antioch (along Sacramento River); along Sacramento River Comment
  RSA394722  Layia glandulosa subsp. glandulosa Annetta Carter 1933-4-23 300 Contra Costa Above the San Joaquin River, between Antioch Bridge and Antioch. Comment
  CDA10019  Layia hieracioides D. G. Kelch 2007-6-3 7 .429 Contra Costa East Bay; Along gated portion of Hampton Rd N of San Pablo Reservoir. Comment
  UC89175  Layia hieracioides Brandegee May 1883 Contra Costa Judsonville Comment
  RSA34206  Layia hieracioides D. D. Keck 1941-6-5 5307 Contra Costa Berkeley Hills, Fish Creek Road 1/4 mile W of E portal of Broadway Tunnel. 335 Comment
  JEPS89794  Layia platyglossa Dean William Taylor 1971-3-28 992 Contra Costa on Mount Diablo, Mount Diablo State Park Mount Diablo; Mount Diablo State Park, Mount Diablo 914 Comment
  SEINET10759869  Layia platyglossa John T. Middleton 1936-4-18 Middleton 143 Contra Costa Deer Valley, Ca. Comment
  SD38982  Layia platyglossa subsp. campestris Edith A. Purer 1933-4-25 3661 Contra Costa Near Newark. Comment
  UC2028381  Lemna minor Barbara Ertter 1998-6-20 16244 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch Comment
  UC650364  Lemna minuscula Ira L. Wiggins 1930-4-18 4607 Contra Costa Jersey Island Comment
  UC692082  Lemna minuscula Mary L. Bowerman 1933-9-9 2430 Contra Costa Mount Diablo, (spring which feeds Frog Pond) Mount Diablo Comment
  JEPS111002  Lepechinia calycina W. L. Jepson Jun 1909 Contra Costa Mt. Diablo Comment
  JEPS78824  Lepechinia calycina Edward Lee 1936-5-24 2166 Contra Costa 10 mi from Marsh Creek Road (Morgan Territory); Morgan Territory Comment
  SEINET4081593  Lepechinia calycina B. C. Templeton 1962-1 sn Contra Costa Mount Diablo. Comment
  UC691400  Lepechinia calycina Mary L. Bowerman 1938-5-28 3648 Contra Costa Mount Diablo 853 Comment
  CAS-BOT-BC89844  Lepidium Bauer 1857-5-1 s.n. Contra Costa Mond Diabola. Comment
  CDA43402  Lepidium acutidens Michael Pitcairn & Dean Kelch 2015-3-6 s.n. Contra Costa South end of the Byron Airport. Comment
  UCD169966  Lepidium chalepense R. M. Case 2001-5-10 PDR-P 088777 Contra Costa On Solano Ave., Concord. Comment
  CDA24906  Lepidium dictyotum Jim Jokerst, Barbara Ertter, Dave Magney 1989-4-5 3080 Contra Costa Alkali sink west and adjacent of Clifton Court Forebay, east of Byron Highway and Italian Slough. Comment
  CHSC67912  Lepidium dictyotum var. acutidens James D. Jokerst 1989-3-29 3074 Contra Costa Byron Hot Springs area NE of Livermore, adjacent to pipeline on terrace S of ephemeral creek. Comment
  JEPS21345  Lepidium dictyotum var. acutidens J. Burtt Davy May 1898 Contra Costa Danville Mount Diablo Region Comment
  RSA8388  Lepidium dictyotum var. acutidens L. S. Rose 1933-3-29 33041 Contra Costa Nortonville. Comment
  CAS-BOT-BC89715  Lepidium latifolium Walter Knight; Joanne Dean 1978-8-14 3170 Contra Costa Brown Island. Comment
  CAS-BOT-BC89900  Lepidium nitidum Volney Rattan 1879-1-1 s.n. Contra Costa Antioch. Comment
  CHSC67204  Lepidium nitidum James D. Jokerst 1991-3-28 3226 Contra Costa Kellogg Reservoir Inundation Zone at 'Upper Greasewoods,' N of Livermore. Comment
  UC402590  Lepidium nitidum I. J. Condit 1913-3-19 Contra Costa Walnut Creek Comment
  RSA34732  Lepidium nitidum R. C. Rollins 1946-3-25 3044 Contra Costa Western slope of Mount Diablo. Comment
  JEPS16599  Lepidium oxycarpum Edward Lee Greene 1888-4-17 Contra Costa Wildcat Creek Comment
  POM204090  Lepidium oxycarpum L. S. Rose 1933-3-29 33041 Contra Costa Nortonville. Comment
  SEINET10735536  Lepidium oxycarpum Barbara J. Ertter, Dale Sanders; Daniel H. Norris 1994-3-26 Ertter 12337 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, west foot of hill near edge of marsh, openings in grassland. T2N R2W. Comment
  UC2027726  Leptosiphon bicolor Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15506 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027775  Leptosiphon ciliatus Barbara Ertter with Holly Forbes 1997-4-20 15565 Contra Costa North base of Mount Diablo at NE base of Eagle Ridge. Comment
  UCD32383  Leptosiphon ciliatus Beecher Crampton 1950-4-22 527 Contra Costa Contra Costa County, above Judsonville, south of the old Empire Mine around top and slopes of hills. 182 Comment
  JEPS100183  Lessingia glandulifera var. glandulifera David Gowen 2004-5-11 58 Contra Costa Lime Ridge Open Space; Ridge trail in the N section of the park and S of the water tank Comment
  UCD134065  Lessingia glandulifera var. glandulifera Peter Rubtzoff 1954-9-14 1751 Contra Costa Lower San Joaquin River, E of Antioch. Comment
  UC88011  Lessingia nemaclada K. Brandegee 1883 Contra Costa Antioch Comment
  UC1287410  Lessingia pectinata var. tenuipes Willard Spence 1962-5-15 672 Contra Costa 0.2 mi e of entrance to Antioch Boat Ramp Comment
  UC761928  Lessingia pectinata var. tenuipes R. F. Hoover 1940-11-23 4696 Contra Costa 2 mi w Byron 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
  JEPS43213  Lewisia rediviva W. L. Jepson 1907-4-26 2640 Contra Costa Mt. Diablo Comment
  JEPS78895  Leymus X multiflorus Edward Lee 1935-8-13 1616 Contra Costa Vaca Canyon; roadside Comment
  UC691184  Leymus X multiflorus Mary L. Bowerman 1938-11-19 3734 Contra Costa Mitchell Creek tributary s Black Point; Mount Diablo 259 Comment
  POM365328  Leymus condensatus A. A. Beetle 1941-6-24 1751 Contra Costa Pt. Richmond on San Francisco Bay Comment
  SEINET10595833  Leymus condensatus Alan A. Beetle 1941-6-24 Beetle 1751 Contra Costa Pt. Richmond on San Francisco Bay, dense stand under Quercus. Comment
  UCD87711  Leymus triticoides Nougart 1916-12-1 s.n. Contra Costa Walnut Creek. Comment
  CAS-BOT-BC272213  Leymus triticoides Mary L. Bowerman 1935-6-28 3159 Contra Costa Inner Black Hills west of the meridian, Mount Diablo Comment
  CAS-BOT-BC272218  Leymus triticoides John Thomas Howell; Gordon H. True 1972-6-29 48928 Contra Costa Byron Hot Springs Road southeast of Byron Comment
  UC2029157  Leymus triticoides Barbara Ertter 2000-7-29 17448 a Contra Costa Lower Donner Canyon just above Donner Cabin site, on north side of Mount Diablo. Comment
  JEPS78630  Lilaeopsis masonii Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3292 Contra Costa Browns Isl., Botany cove Comment
  CDA39643  Limonium sinuatum D. G. Kelch 2011-10-23 11 .840B Contra Costa Carquinez Strait Region; Martinez Waterfront Park. Comment
  CDA39056  Limonium sinuatum D. G. Kelch 2011-6-12 11 .585-B Contra Costa Carquinez Strait; Above Point Costa. 0 Comment
  UCD33426  Linanthus Beecher Crampton 1968-3-27 8232 Contra Costa SE corner of County, ca. 3.5 miles south of Byron. Comment
  UC691640  Linanthus bicolor Mary L. Bowerman 1931-3-29 619 Contra Costa East Cave Point Ridge; Mount Diablo Comment
  JEPS112513  Linum bienne A. G. Murdock 2004-5-28 310 Contra Costa At west end of Refugio Valley 120 Comment
  UC1795771  Linum bienne Barbara Ertter, Brad Olson 1994-5-7 12746 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  SJSU5759  Lithophragma affine M. C. Maloney 1971-4-20 Contra Costa Morgan Territory Rd, 6 mi from Marsh Cr Rd Comment
  UC1084400  Lithophragma affine G. Thomas Robbins 1937-4-17 128 Contra Costa near Point Richmond Comment
  UC402493  Lithophragma affine Chestnut and Drew 1889-4-16 Contra Costa Martinez Comment
  SEINET6032167  Lithophragma affine H. E. Hodge 1956-4-7 23 Contra Costa 2 miles north of Orinda 61 Comment
  UC1300838  Lithophragma heterophyllum Helen K. Sharsmith 1963-3-3 5193 Contra Costa near Moraga (Las Trampas Canyon E of St. Mary's College) 259 Comment
  UC1005823  Lobelia tupa N. Floy Bracelin 1944-10-15 2815 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC88259  Logfia filaginoides Mrs. K. Curran May 1886 Contra Costa Antioch Comment
  UC697122  Lolium multiflorum Mary L. Bowerman 1938-5-25 3630 Contra Costa by North Road, Arroyo del Cerro Mount Diablo (Mount Diablo); , North Road 109 Comment
  CAS-BOT-BC283395  Lolium multiflorum Mary L. Bowerman 1933-5-25 2199 Contra Costa Mount Diablo. Alamo Canyon: E-facing slope above Wilson's barn Comment
  SEINET2080859  Lolium multiflorum D. Walter 1985-4-29 10183 Contra Costa Dougherty Road 4 miles N of Old Ranch Road (N of Dublin, E of San Ramon). 121 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
  UCD36917  Lolium temulentum Beecher Crampton 1956-5-14 3389 Contra Costa 7 miles southwest of city of Antioch, just east of old mining town of Nortonville. Comment
  POM132574  Lomatium caruifolium C. F. Baker 1908-4-27 2800 Contra Costa [Unspecified] Comment
  UC2027938  Lomatium caruifolium Barbara Ertter with Tony Morosco and other CNPS members 2001-5-6 17624 Contra Costa Northwest flank of Mount Diablo, Globe Lily Trail paralleling Mitchell Canyon Road. Comment
  CHSC69467  Lomatium caruifolium var. caruifolium James D. Jokerst 1989-5-28 3056 Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  UC659030  Lomatium caruifolium var. caruifolium Mildred E. Mathias 1937-4-11 1165 Contra Costa 3 mi. s. Byron Comment
  UC196245  Lomatium caruifolium var. caruifolium Edw. L. Greene 1889-3-23 Contra Costa near Byron Comment
  UC692350  Lomatium nudicaule Mary L. Bowerman 1933-6-7 2251 Contra Costa Mt. Diablo, North Peak Saddle Comment
  UC691471  Lomatium utriculatum Mary L. Bowerman 1930-6-5 260 Contra Costa 5.8 mi from North Gate (North Road); Mount Diablo 457 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
  RSA455187  Lonicera hispidula var. vacillans Thekla Mohr 1917-07 s.n. Contra Costa Mount Diablo Comment
  UC691482  Lonicera hispidula var. vacillans Mary L. Bowerman 1935-6-21 3145 Contra Costa e fork Arroyo del Cerro (several hundred yards below the spring) 289 Comment
  CAS-BOT-BC240661  Lonicera interrupta H. E. McMinn 1922-10-1 91 b Contra Costa Mitchelle Canon [Canyon], Mt. Diablo Comment
  POM181453  Lonicera involucrata Ira L. Higgins 1930-4-18 4594 Contra Costa Levee, east end of Jersey Island. Comment
  UC650409  Lonicera involucrata var. ledebourii Ira L. Wiggins 1930-4-18 4594 Contra Costa levee on e end Jersey Island Comment
  UC1050675  Lonicera pileata f. yunnanensis N. Floy Bracelin 1941-4-20 1183 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC691486  Lonicera subspicata var. denudata Mary L. Bowerman 1930-6-22 367 Contra Costa Mitchell Canyon Mount Diablo 365 Comment
  SEINET10832893  Lotus Frenkel 1964-3-18 FRENKEL 400 A Contra Costa On giant road, .4 mi n of atsf rr crossing, richmond. 15 Comment
  JEPS112337  Lotus corniculatus Dean G. Kelch and Andrew G. Murdock 2004-5-7 04 .183 Contra Costa Canada del Cierbo. contra Coasta County, CA. Comment
  JEPS99996  Lotus corniculatus A. Langston 2003-7-2 AL 58 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  SBBG122846  Lotus corniculatus B. Ertter, K. Ertter 1995-7-11 14473 Contra Costa Sulfur Spring on Pine Crk, Diablo Foothills Regional Park SW of Walnut Crk 121 Comment
  UC864780  Lotus crassifolius var. crassifolius Lewis S. Rose 1935-5-16 35176 Contra Costa Mt. Diablo Comment
  UC15621  Lotus humistratus W. H. Brewer 1862-5-12 1073 Contra Costa Monte Diablo Comment
  UC864815  Lotus humistratus Lewis S. Rose 1941-5-15 41234 Contra Costa Mt. Diablo, w slope Mt. Diablo 396 Comment
  CDA27211  Lotus humistratus G. E. Sorensen 1963-5-24 Contra Costa North Gate Road, Mt. Diablo State Park. 0 Comment
  JEPS65159  Lotus scoparius W. L. Jepson 1944-8-5 27548 Contra Costa Moraga Ridge Oakland Hills Comment
  UC1129128  Lotus scoparius R. W. Lundh 1932-8-27 150 Contra Costa 1.5 mi w Cave Point; Mt. Diablo Quad. 487 Comment
  UC555418  Lotus strigosus H. L. Mason 1932-3-20 6839 Contra Costa Antioch 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
  JEPS41057  Lotus wrangelianus Rimo Bacigalupi, and L. R. Heckard 1965-5-11 9082 Contra Costa sw of Richmond; San Francisco Bay, Brooks Island 30 Comment
  JEPS55826  Lotus wrangelianus A. M. Ottley 1920-6-5 779 Contra Costa below Moraga Ridge Comment
  UC15709  Lotus wrangelianus State Survey 1800-1 1166 Contra Costa Mt. Diablo Comment
  UC1970563  Lupinus Donald G. Nelson 1937-4-24 516 Contra Costa in rolling hill country north of Byron; Marsh Creek Road Comment
  CHSC21637  Lupinus albifrons Willis Ball 1975-3-9 486 Contra Costa In area #8. On n facing slope of large hill ca. 510 yds s of main parking lot ca. 750 yds w of Contra Loma Blvd. 124 Comment
  UC750647  Lupinus albifrons Lewis S. Rose 1946-4-1 46023 Contra Costa above Wildcat Creek (Berkeley Hills); , above Wildcat Creek 396 Comment
  CAS-BOT-BC201371  Lupinus albifrons var. albifrons A. A. Heller 1908-4-16 8887 Contra Costa Antioch 12 Comment
  CAS-BOT-BC201377  Lupinus albifrons var. albifrons James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC201370  Lupinus albifrons var. albifrons A. A. Heller 1928-4-15 14517 Contra Costa Along the San Joaquin River at Antiock [Antioch] Comment
  CAS-BOT-BC201376  Lupinus albifrons var. albifrons Charles Piper Smith 1922-4-14 3483 Contra Costa Antioch - Santa Fe Comment
  OBI49327  Lupinus albifrons var. collinus Joseph Andorfer Ewan 1934-3-10 8645 Contra Costa 2 mi below Orinda road bridge, Wildcat Cyn Comment
  CAS-BOT-BC196217  Lupinus albifrons var. eminens C. F. Baker Apr. 25 2823 Contra Costa Antioch Comment
  JEPS112334  Lupinus arboreus Dean G. Kelch and Andrew G. Murdock 2004-5-21 04 .217 Contra Costa Crocket - Tormey Headlands; County: Contra Costa; Along San Pablo Ave. ~ 1 k. west of Carq. Bridge. Comment
  RSA760662  Lupinus arboreus William J. Ferlatte, L. Maynard Moe 1970-4-27 1262 Contra Costa San Francisco Bay, Red Rock Island. Comment
  UC201981  Lupinus arboreus Miss Harriet A. Walker 1911-7-2 2511 Contra Costa near Santa Fe Track Antioch (Antioch); , near Santa Fe Track Comment
  JEPS112402  Lupinus bicolor Dean G. Kelch and Andrew G. Murdock 2005-4-24 05 .166 Contra Costa Franklin Canyon; County: Contra Costa; Franklin Canyon, Contra Costa County, CA. Collier Hill. West Carbon. Comment
  JEPS89588  Lupinus bicolor Dean W. Taylor 1971-4-3 1045 Contra Costa slope near summit Mt. Diablo; S. Coast Ranges, Mt. Diablo Comment
  UC1197281  Lupinus bicolor J. P. Tracy 1900-3-24 624 Contra Costa Dry Hill Point Richmond (Point Richmond); Region about San Francisco Bay, Point Richmond 15 Comment
  UC15944  Lupinus bicolor Brewer 1862-5-23 1149 Contra Costa Mt. Diablo Comment
  UC692567  Lupinus bicolor Mary L. Bowerman 1931-4-4 671 Contra Costa West Road just w Turtle Rock, Mount Diablo (= North Road, Mount Diablo); Mount Diablo, just w of Turtle Rock Comment
  UC73195  Lupinus bicolor Chesnut and Drew 1889-4-18 Contra Costa Antioch Comment
  UC75240  Lupinus bicolor C. F. Baker 1903-4-25 2822 Contra Costa Antioch Comment
  UC762917  Lupinus bicolor R. F. Hoover 1935-3-10 306 Contra Costa Antioch Comment
  JEPS111069  Lupinus bicolor Lee Echols 2003-4-1 s.n. Contra Costa N of Lark Drive in SE portion of grassland within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond. 15 Comment
  SEINET11268248  Lupinus bicolor Barbara Ertter 1998-4-4 15944 Contra Costa Northwest of Mount Diablo, SE of Indian Valley School.; 0 Comment
  UCD107278  Lupinus bicolor P. B. Kennedy 1929-4-21 s.n. Contra Costa St. Mary's College, Moraga Valley. Comment
  UCD107314  Lupinus bicolor Helen K. Sharsmith 1963-4-7 5292 Contra Costa near Oakley south of Antioch. 15 Comment
  CAS-BOT-BC187863  Lupinus chamissonis Alice Eastwood 1914-2-24 3735 Contra Costa Antioch Comment
  CAS-BOT-BC187857  Lupinus chamissonis John Thomas Howell 1926-12-27 2272 Contra Costa 1.5 miles S of Oakley Comment
  UC2050234  Lupinus formosus var. formosus Dean G. Kelch and Andrew G. Murdock 2004-5-28 287 Contra Costa Pinole Peak; County: Contra Costa. Comment
  CDA28918  Lupinus microcarpus D. G. Kelch, Troy MacGregor 2009-5-24 9 .298 Contra Costa Carquinez Strait; Carquinez Loop Trail S of Ozol, S-SW of Martinez, nr Wolcott Ln . Comment
  UC1543065  Lupinus microcarpus var. densiflorus Donald G. Nelson 1937-4-24 515 Contra Costa Marsh Creek Road n Byron; Marsh Creek Road Comment
  UC1562561  Lupinus microcarpus var. densiflorus Barbara Ertter with Elizabeth Neese 1988-4-24 7450 Contra Costa n of e-w part of Black Diamond Trail sw Antioch (Black Diamond Mines Regional Preserve); Black Diamond Mines Regional Preserve Comment
  UC201017  Lupinus microcarpus var. densiflorus Katharine Brandegee 1918-6-16 Contra Costa near Vigorit Powder Works; near Vigorit Powder Works Comment
  UCR197907  Lupinus microcarpus var. densiflorus Beecher Crampton 1950-4-22 525 Contra Costa Above site of Judsonville, west of old Empire mine 183 Comment
  CDA27537  Lupinus microcarpus var. microcarpus D. G. Kelch, A. G. Murdock 2005-5-6 5 .224 Contra Costa Franklin Canyon. East of Christie Road. South of Route 4. Comment
  JEPS65467  Lupinus microcarpus var. microcarpus W. L. Jepson 1921-5-22 9214 Contra Costa Mt. Diablo; Mt. Diablo, s slope 609 Comment
  UC15959  Lupinus microcarpus var. microcarpus A. Eastwood 1894-5-3 153 Contra Costa Antioch Comment
  UC201011  Lupinus microcarpus var. microcarpus Katharine Brandegee 1918-6 Contra Costa Richmond Annex Comment
  UC201023  Lupinus microcarpus var. microcarpus Katharine Brandegee June 1918 Contra Costa El Dorado St. Richmond Annex (Richmond Annex); , El Dorado St. Comment
  UC33552  Lupinus microcarpus var. microcarpus Chesnut and Drew 1889-4-17 Contra Costa Clayton Comment
  UC2028214  Lupinus nanus Barbara Ertter with Richard K. Brummitt 1998-5-13 16132 Contra Costa Summit Road on Mount Diablo, base of rock outcrop/roadcut above Juniper Camp. Comment
  JEPS65413  Lupinus pachylobus E. L. Greene 1887-4-15 Contra Costa Briones Bills; Briones Hills Comment
  RSA0027639  Lupinus pachylobus Barbara Ertter, Tony Morosco 1998-4-12 16002 Contra Costa Base of Mount Olympia on north side of Mount Diablo, slope above quarry NE of Olympia Trail, with numerous outcrops. 518 Comment
  UCD32374  Lupinus succulentus Beecher Crampton 1950-4-12 510 Contra Costa 1 mile south of Richmond, intersection of Cutting Blvd. and Carlson Blvd., singular path along S.P. railroad right of way. 22 Comment
  UCSB11258  Lupinus succulentus Hayes, Judy 1961-3-30 Contra Costa South Gate of Mount Diablo State Park 182 Comment
  UC2028483  Luzula comosa Barbara Ertter 1998-5-3 16040 Contra Costa SW fork of Pine Creek between Pine Ridge and Wall Point Ridge, southwest base of Mount Diablo Comment
  JEPS25121  Luzula macrantha G. Thomas Robbins 1959-4-18 3987 Contra Costa Overlooking San Pablo Bay about 1/2 mi east of Pt. San Pablo, Richmond 7 Comment
  JEPS67204  Luzula macrantha W. L. Jepson 1943-4-24 20761 Contra Costa Vicinity San Francisco Bay, Oakland Hills, Moraga Ridge Comment
Read comments
Jan 25 2008
  CDA5759  Lycium chinense T. C. Fuller 1964-11-6 12810 Contra Costa Knightsen. 0 Comment
  CDA9685  Lycopus americanus D. G. Kelch 2002-7-15 2 .004 Contra Costa CA Delta; Old San Joaquin River channel, E of Brentwood. San Joaquin County border. 0 Comment
  UC1178022  Lythrum californicum Herbert L. Mason 1955-7-14 14636 Contra Costa 1/2 mi e of Antioch Bridge 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
  UC1952810  Madia elegans Barbara Ertter with Christopher Davidson 2010-9-1 20569 Contra Costa lower Donner Canyon on north base of Mount Diablo Comment
  JEPS111711  Madia exigua D. G. Kelch 2004-5-9 04 .205 Contra Costa Crockett - Edwards Canyon; Upper Edwards Canyon 160 Comment
  JEPS111759  Madia exigua D. G. Kelch 2005-5-13 05 .257 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Area along Vista Road ~ 2.5 kiloms West of Martinez 45 Comment
  CAS-BOT-BC344328  Madia exigua T. S. Brandegee 1885-5-1 s.n. Contra Costa Antioch Comment
  UC2028296  Madia exigua Barbara Ertter with Dan Norris 1998-6-18 16215 Contra Costa Rock City area on south side of Mount Diablo, trail to Artist Point. Comment
  CAS-BOT-BC342985  Madia gracilis Mary L. Bowerman 1930-6-5 264 Contra Costa Mount Diablo. North Road 5.8 miles from North Gate 457 Comment
  CDA34201  Madia gracilis D. G. Kelch, D. A. Weinstein 2011-5-28 11 .54 Contra Costa Carquinez Strait Region.; W of Martinez. N of end of Hillside Pl. Comment
  CDA8271  Madia gracilis D. G. Kelch, A. G. Murdock 2005-5-6 5 .222 Contra Costa Carquinez Strait; East of Christie Road. South of Route 4, Franklin Canyon. Comment
  UC1795004  Madia gracilis R. K. Brummitt and B. Ertter 1998-5-6 19781 Contra Costa Mt. Diablo, NW side, path to Mitchell's Rock 300 Comment
  UC1795769  Madia gracilis Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14677 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; grassland/scrub at northeast corner of area. Comment
  SEINET11601587 Image available Madia radiata K. Brandegee 1908-4-9 50 Contra Costa Near Antioch Comment
  CAS-BOT-BC343584  Madia sativa Keck 1933-11-2 2614 Contra Costa 1 mile W. of Avon Comment
  CHSC117387  Malacothamnus fasciculatus Barbara Ertter; Tony Morosco 1998-9-18 16417 Contra Costa West edge Lime Ridgde Open Space northwest of Mount Diablo, chaparral at base of hills. Comment
  CAS-BOT-BC8183  Malacothamnus fasciculatus subsp. fasciculatus Harvey Monroe Hall; F. M. Essig 1916-5-30 10131 Contra Costa Mt. Diablo on the westerly side north of Pine Canyon 290 Comment
  UC185544  Malacothamnus fremontii Katharine Brandegee May 1883 Contra Costa Base of Mt. Diablo Comment
  UC692620  Malacothamnus fremontii Mary L. Bowerman 1933-5-21 2158 Contra Costa on ridge between main forks (head of Grape Spring gully) Mount Diablo, Sulplhur Spring Canyon Comment
  CAS-BOT-BC204094  Malacothamnus hallii John Thomas Howell; T. H. Kearney 1950-7-5 26634 Contra Costa On North Road, Mt. Diablo 259 Comment
  CAS-BOT-BC345271  Malacothrix californica Kellogg; Brannan 1870-4-22 s.n. Contra Costa Antioch Comment
  UC2027959  Malva nicaeensis Barbara Ertter with Richard Rabeler, Tony Morosco 1997-6-10 15667 Contra Costa Martinez Regional Shoreline, south edge of Carquinez Strait. Comment
  UC2062657  Malva pseudolavatera Barbara Ertter 2003-6-22 18233 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, ca 1/2 air mile east of headquarters, drainage east of River View Loop Trail. Comment
  UC871380  Malvella leprosa Lewis S. Rose 1938-10-28 38310 Contra Costa Byron 3 Comment
  CDA42228  Marah fabacea D. G. Kelch 2003-3-21 3 .04 Contra Costa Carquinez Strait Region; Martinez; West: Ozol Rock and Scenic Drive. Comment
  UC1005844  Marah fabacea N. Floy Bracelin 1945-4-14 2843 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UCSB9128  Marah fabacea Kamb, Peter; Chisaki, Francia 1950-3-18 Contra Costa Black Hills, S of Mt. Diablo, on south road to Mt. Diablo from Danville 365 Comment
  CHSC28456  Marah oregana Robert A. Schlising 1964-4-2 2667 Contra Costa Berkeley-Oakland Hills. Comment
  CHSC46897  Marah oregana R. A. Schlising 1964-4-11 2699 Contra Costa Berkeley/Oakland Hills. Comment
  CHSC46930  Marah oregana R. A. Schlising 1964-4-2 2697 Contra Costa Berkeley/Oakland Hills. Comment
  SEINET5560693  Marah oregana H. S. Gentry 1931-1 58 Contra Costa Collected near Buckle Point, Mount Diablo. Comment
  UC1586020  Marsilea vestita subsp. vestita Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8131 Contra Costa ca. 15 air mi sw Stockton (w and adjacent to Clifton Court Forebay); se Contra Costa Co. Comment
  JEPS127047  Matricaria discoidea Lowell Ahart, Josephine Guardino 2016-4-19 20766 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
  UC635484  Meconella oregana Herbert L. Mason 1927-4-16 3666 Contra Costa Wild Cat Canyon Berkeley Hills Comment
  CAS-BOT-BC271220  Melica californica Mary L. Bowerman 1935-5-8 2975 Contra Costa Knoll on spur south of Pioneer Camp, Mount Diablo 762 Comment
  RSA720797  Melica californica Mary L. Bowerman 1991-5-21 s.n. Contra Costa Mount Diablo. Jim White trail (Deer Flat Road) South side of Juniper-Moses Rock Trail near Deer Flat junction. Comment
  SD218256  Melica californica William J. Ferlatte, L. Maynard Moe 1970-4-27 1260 Contra Costa San Francisco Bay, Red Rock Island, near summit. Comment
  UC1132245  Melica californica C. M. Belshaw 1936-5-8 2051 Contra Costa 1.75 mi sse Mt. Diablo summit; Mt. Diablo Quad. 609 Comment
  UC691173  Melica californica Mary L. Bowerman 1933-6-3 2236 Contra Costa Ransom Point trail Mount Diablo (Mount Diablo) Comment
  CAS-BOT-BC271221  Melica californica Mary L. Bowerman 1935-5-25 3070 Contra Costa South of the summit, east of the hairpin turn on road, Mount Diablo 1066 Comment
  CAS-BOT-BC281431  Melica imperfecta D. E. Breedlove 1970-4-18 17433 Contra Costa At the N edge of Lafayette above Laurel Drive 243 Comment
  SEINET190972 Image available Melica imperfecta A. A. Beetle 1941-3-28 1723 Contra Costa Near Orinda Comment
  UC692464  Melica imperfecta Mary L. Bowerman 1931-4-18 714 Contra Costa Sycamore Canyon; Mount Diablo 335 Comment
  CDA32513  Melica imperfecta A. A. Beetle 1941-3-28 Contra Costa Near Orinda 0 Comment
  CAS-BOT-BC262510  Melica torreyana Mary L. Bowerman 1935-5-25 3071 Contra Costa Mount Diablo. Meridian Peak south of the summit (east of the hairpin turn on road) 1066 Comment
  POM204767  Melica torreyana C. F. Baker 1903-4-28 2815 Contra Costa Mitchell's Canyon, Mt. Diablo. Comment
  UC53660  Melica torreyana Jos. Burtt Davy 1899-4-19 7862 Contra Costa Las Trampas Creek 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
  JEPS99542  Melilotus indicus Mary L. Bowerman 1995-6-4 Contra Costa Mount Diablo, North Gate Rd. Comment
  UC651294  Melilotus indicus Ira L. Wiggins 1930-4-18 4599 Contra Costa Jersey Island Comment
  JEPS99554  Mentzelia dispersa Mary Bowerman 1978-6-3 Contra Costa Mount Diablo, between lower summit parking lot and road. Comment
  UC692698  Mentzelia dispersa Mary L. Bowerman 1930-6-10 305 Contra Costa Mount Diablo, Summit Comment
  UC19628  Mentzelia lindleyi unknown 1125 Contra Costa Hills n Coal Mine; Mt. Diablo Comment
  UC19612  Mentzelia micrantha Edw. L. Greene 1892-6-24 Contra Costa Mt. Diaiblo Comment
  CDA33748  Mercurialis ambigua D. G. Kelch 2011-2-5 11 .018 Contra Costa Crockett below Zampa Bridge. 0 Comment
  SBBG2832  Micranthes californica J. M. Tucker 1946-3-24 1389 Contra Costa hills between Nortonville and Somersville Comment
  CDA32927  Micropus californicus D. G. Kelch 2009-5-24 9 .296 Contra Costa Carquinez Strait; Carquinez Loop Trail S of Ozol, S-SW of Martinez, nr Wolcott Ln . Comment
  JEPS100177  Micropus californicus G. Smick 2003-4-29 GAS 149 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1795021  Micropus californicus R. K. Brummitt and B. Ertter 1998-5-6 19782 Contra Costa Mt. Diablo, NW side, path to Mitchell's Rock 300 Comment
  JEPS40605  Micropus californicus var. californicus R. F. Hoover 1936-4-16 972 Contra Costa e slope Bald Peak Comment
  JEPS49066  Micropus californicus var. californicus Lewis S. Rose 1966-4-22 66031 Contra Costa n slope of Mt. Diablo; Donner Canyon, Clayton Comment
  UC1795729  Micropus californicus var. californicus Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14223 Contra Costa Mt. Diablo southeast of Walnut Creek, north-facing slope north of Curry Point, grassy semishade at edge of oak woodland. 518 Comment
  UC1795792  Micropus californicus var. californicus Barbara Ertter, Mary Bowerman et al. 1995-5-7 14050 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, grassy flat, roadside vegetation, clay substrate. Comment
  RSA72855A  Microseris bigelovii A. Kellogg, W. G. W. Harford 1869-4-8 579 Contra Costa Antiock [Antioch] Comment
  CAS-BOT-BC348788  Microseris campestris Niall McCarten; V. I. Dains 1986-1-1 03231522 41 Contra Costa Ecos East Contra Costa County. W of Camino Diablo & Kellogg Creek Comment
  CAS-BOT-BC348789  Microseris campestris Peter H. Raven; H. L. Mason; R. Ornduff; et al 1957-4-4 10581 Contra Costa Flats 3.0 miles s. of Byron Comment
  UC2027816  Microseris douglasii Barbara Ertter with Holly Forbes 1997-4-20 15550 Contra Costa North base of Mount Diablo, roadside on trail to Back Creek from Mitchell Canyon trailhead. Comment
  JEPS36178  Microseris douglasii subsp. douglasii W. L. Jepson 1918-6-3 7591 Contra Costa Donner Canyon Mt. Diablo Comment
  UC691433  Microseris douglasii subsp. douglasii Mary L. Bowerman 1931-4-11 697 Contra Costa toward mouth of Pine Canyon; Mount Diablo Comment
  CAS-BOT-BC348895  Microseris douglasii subsp. douglasii K. L. Chambers 1953-4-25 449 Contra Costa Balfour Road ca. 4 mi. w. of Brentwood and 1.8 mi. e. of its junction with Antioch-Briones Valley Rd. Comment
  RSA0027886  Microseris douglasii subsp. douglasii Barbara Ertter, Stu Garrett 1997-3-29 15527 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC1819049  Microseris douglasii subsp. douglasii Barbara Ertter, Lisa Schultheis 1995-4-27 14012 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  JEPS18256  Microseris elegans Peter H. Raven with Mason, Stone, Ornduff, Kuijt 1957-4-4 10580 Contra Costa 3.0 mi s Byron Comment
  UC2028127  Microseris sylvatica Barbara Ertter with Richard K. Brummitt 1998-5-6 16081 Contra Costa Base of Mitchell Rock Trail on north base of Mount Diablo. Comment
  UCD118913  Microsteris gracilis Laurence S. Jones 1934-4-8 s.n. Contra Costa West slopes of Mt. Diablo. 609 Comment
  UC1055920  Mimetanthe pilosa N. Floy Bracelin 1944-9-9 2799 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  RSA420306  Mimulus aurantiacus var. aurantiacus E. E. Stanford 1930-5-24 1514 Contra Costa Marsh Creek Canyon. Comment
  UC943784  Mimulus aurantiacus var. aurantiacus H. E. McMinn 1945-2-27 5455 Contra Costa along road near base Mt. Diablo Comment
  UC691503  Mimulus grandis Mary L. Bowerman 1935-4-22 2880 Contra Costa 2 mi from West road (= North Rd.) entrance; Mount Diablo Comment
  POM261437  Mimulus guttatus J. T. Howell 1940-4-21 15402 Contra Costa Pine Canyon, Mount Diablo Comment
  RSA454334  Mimulus guttatus L. S. Rose 1941-3-27 41064 Contra Costa 2 mi. w. of Byron. 46 Comment
  UC27004  Mimulus nasutus J. Burtt Davy 1893-5-13 214 Contra Costa Claremont Canyon to Fish Ranch fide fieldbook Comment
  UC725862  Mimulus nasutus A. A. Heller 1942-4-12 Contra Costa 2 mi n Blue Tent Creek Comment
  UC1125779  Minuartia douglasii C. M. Belshaw 1936-5-8 2062 Contra Costa Mt. Diablo Mt. Diablo Quadrangle (se slope, Plot 5) Comment
  UC692297  Minuartia douglasii Mary L. Bowerman 1935-4-17 2825 Contra Costa West Road (= North Rd.) 2 mi from entrance; Mount Diablo 237 Comment
  RSA0026044  Mirabilis jalapa D. E. Breedlove 1969-10-18 16711 Contra Costa Along the roadbank on Reliez Valley Road at the junction with Gloria Terrace; Lafayette. Comment
  CDA33814  Moehringia macrophylla D. G. Kelch, Abigail Moore, Michael Park, Troy 2010-5-15 10 .115 Contra Costa Mt. Diablo. Trail from Prospector s Gap to Lower Summit parking lot. 0 Comment
  UCD125303  Monardella villosa P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. 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
  CHSC67994  Monardella villosa subsp. villosa James D. Jokerst 1987-6-16 2915 Contra Costa Livermore Valley, 0.3 mi W of Vasco Rd. and +/- 200 m SW of a dirt track. 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
  UC2031460  Monolopia gracilens Barbara Ertter with David Gowen 2014-4-12 21715 Contra Costa Ridge on north side of Prospectors Gap Road, ca 1 mile east of Mount Diablo summit Comment
  UC691681  Monolopia gracilens Mary L. Bowerman 1932-4-16 1339 Contra Costa Eagle Point ridge s 1682 point; Mount Diablo Comment
  CAS-BOT-BC349608  Monolopia major Ethel Crum 1939-3-19 2083 Contra Costa Two miles west of Byron 45 Comment
  CAS-BOT-BC349609  Monolopia major Ethel Crum 1939-3-19 2083 Contra Costa Two miles west of Byron 45 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
  JEPS68951  Monolopia major Edward Lee 1935-3-10 1280 Contra Costa Donovan Road West watershed of Kirker Creek, Kirker Pass (se-facing hillside) 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
  UC692019  Montia fontana Mary L. Bowerman 1939-3-31 3736 Contra Costa Spring in bend of road to Barbecue Terrace ((off South Road), Mount Diablo); Mount Diablo Comment
  CHSC75113  Montia perfoliata Roger Thom 1987-4-17 1 Contra Costa 3300 block Johnson Rd. in Lafayette. 152 Comment
  UC56344  Muilla maritima J. Burtt Davy 1900-3-24 6527 Contra Costa Stege Western Middle California Comment
  CAS-BOT-BC83286  Myosurus minimus H. L. Mason 1932-3-20 6854 Contra Costa Briones road. Comment
  CHSC22992  Myosurus minimus Robert A. Schlising 1962-3-24 2107 Contra Costa Coast Ranges. 'Bee meadow' near Jct Hwy 4 and Bixler Rd. Comment
  CHSC68026  Myosurus minimus James D. Jokerst 1989-3-28 3058 Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  UC1738083  Myosurus minimus D. E. Stone 1957-2-28 14268 A12 Contra Costa 3 mi S of Byron ( on road to Herdlyn) Comment
  UCD96307  Myosurus minimus H. L. Mason 1952-4-14 14263 Contra Costa 3.5 miles south of Byron. Comment
  HSC104396  Myriophyllum exalbescens M. R. Bell 1950-10-9 Contra Costa Near Concord, from stock pond on farm of E.J. Mangini Comment
  UC1777714  Myriophyllum sibiricum M. R. Bell 1950-10-9 Contra Costa near Concord (from stock pond on farm of E. J. Mangini) Comment
  CDA36299  Myriophyllum spicatum Ed Finley, Mark Lubinski 1988-9-26 Contra Costa Brentwood, Cruiser Haven Marina. 7000 Orwood Road. 0 Comment
  UC2042751  Myriophyllum verticillatum Barbara Ertter with Lynne Hosley 1991-9-22 10822 Contra Costa Lafayette Reservoir in hills SW of Lafayette, in water at E end of dam. Comment
  UC2028567  Narcissus pseudonarcissus Barbara Ertter 1997-2-11 15451 Contra Costa North side of Mount Diablo, Donner Cabin site on Donner Canyon Road. Comment
  UC1133134  Nassella cernua C. M. Belshaw 1936-5-9 2083 Contra Costa 1/2 mi n Nortonville (Plot 14); Mt. Diablo Comment
  UC60163  Nassella lepida Jos. Burtt Davy 1899-4-9 7863 Contra Costa Las Trampas Peak Comment
  UC692291  Nassella lepida Mary L. Bowerman 1935-5-22 3060 Contra Costa saddle w Twin Peaks (Eagle POint Ridge); Mount Diablo 441 Comment
  UC692413  Nassella lepida Mary L. Bowerman 1932-4-27 1387 Contra Costa canyon w Riggs Canyon (w exposure, s face of mt); Mount Diablo, Oyster Ridge 335 Comment
  CAS-BOT-BC259905  Nassella lepida Mary L. Bowerman 1932-4-27 1387 Contra Costa Mount Diablo. Oyster Ridge, canyon W of Riggs Canyon 335 Comment
  CDA1583  Nassella pulchra D. G. Kelch 2002-5-24 2 .021 Contra Costa Carquinez Strait; 5th St. Prairie, Crockett. Comment
  JEPS100037  Nassella pulchra S. O'Neil 2003-3-11 SEO 18 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC692388  Nassella pulchra Mary L. Bowerman 1933-5-25 2191 Contra Costa w end south face (gentle e-facing hill just below the steep face); Mount Diablo, Oyster Ridge Comment
  JEPS111398 Image available Navarretia gowenii David Gowen 2005-5-25 390 Contra Costa Lime Ridge Open Space on N side, just SE of one of the quarries. 182 Comment
  UC691607  Navarretia mellita Mary L. Bowerman 1931-5-31 907 Contra Costa n slope of 1778 point Mount Diablo, Fossil Ridge (Rock City Ridge) Comment
  JEPS116940  Navarretia nigelliformis subsp. radians David Gowen 2008-4-21 867 Contra Costa South of Antioch, in Contra Loma Regional Park off Frederickson Lane. North, to northwest facing slope just NW of parking area for Black Diamond Mines Regional Preserve. Comment
  UC691764  Navarretia pubescens Mary L. Bowerman 1932-11-19 1652 Contra Costa Pioneer Camp Mount Diablo Comment
  CAS-BOT-BC233584  Navarretia pubescens John Thomas Howell 1942-7-19 17041 Contra Costa Near Deer Flat, Mount Diablo 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
  JEPS112005  Navarretia squarrosa D. G. Kelch 2005-5-1 05 .191 Contra Costa Crockett - Edwards Canyon 150 Comment
  UC1607552  Navarretia squarrosa Barbara Ertter with Laura Fujii 1990-7-21 9398 Contra Costa w of Pleasant Hill (near junction of Briones Crest and Spengler trails); Briones Regional Park, Briones Hills 396 Comment
  JEPS100041  Nemophila heterophylla G. Smick 2003-2-27 GAS 54 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1301148  Nemophila heterophylla Helen K. Sharsmith 1963-3-3 5188 Contra Costa e St. Mary's College (near Moraga, Las Trampas Canyon); San Francisco Bay Region, Las Trampas Cyn, nr Moraga 259 Comment
  UC606926  Nemophila heterophylla L. Constance, J. L. Morrison 1938-5-5 2190 Contra Costa above Deer Flat (near head of Mitchell Canyon, nw slope of Mount Diablo); nw slope Mount Diablo, nr head Mitchell Canyon 670 Comment
  UC67125  Nemophila heterophylla Harley P. Chandler 1901-4-5 948 Contra Costa Pine Canyon , Pine Canyon (Mt. Diablo) Comment
  UC691705  Nemophila heterophylla Mary L. Bowerman 1933-4-9 1838 Contra Costa w fork , Donner Canyon, w fork (Donner Canyon; Mount Diablo) 243 Comment
  PASA2111  Nemophila heterophylla Annetta Carter 1929-3-29 Contra Costa near Clayton Comment
  UC67148  Nemophila menziesii Harley P. Chandler 1901-4-5 970 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
  JEPS44838  Oemleria cerasiformis H. H. Haworth 1917-4-22 Contra Costa Orinda Park Comment
  RSA0025334  Oemleria cerasiformis James R. Shevock 2012-8-12 40657 Contra Costa Tilden Regional Park, East Bay Regional Park District. Along Grizzly Peak Trail about midway between the upper and lower trailheads. 448 Comment
  RSA610758  Oemleria cerasiformis Joseph A. Ewan 1935-3-2 9081 Contra Costa wildcat canyon. Comment
  SBBG2988  Oemleria cerasiformis H. and M. Dearing 1940-3-19 4123 Contra Costa Tilden Park, Berkeley Comment
  CAS-BOT-BC140362  Oemleria cerasiformis Volney Rattan 1883-4-1 s.n. Contra Costa Martinez Comment
  CDA8361  Oenanthe sarmentosa D. G. Kelch 2004-4-3 4 .16 Contra Costa Carquinez Strait; Along Alhambra Valley Rd on moist creek bed. Comment
  JEPS111606  Oenanthe sarmentosa D. G. Kelch 2003-8-13 03 .100 Contra Costa Martinez Marsh 0 Comment
  CAS-BOT-BC171590  Oenothera deltoides subsp. howellii J. H. Thomas 1949-4-19 314 Contra Costa Antioch sand dunes. Comment
  CAS-BOT-BC171591  Oenothera deltoides subsp. howellii P. A. Munz 1949-6-1 14436 Contra Costa Sand dunes east of Antioch. Comment
  UC914280  Oenothera deltoides subsp. howellii Verne Grant and Alva Grant 1947-4-13 7926 Contra Costa sand hills by river e Antioch Comment
  CDA38153  Oenothera deltoides subsp. howellii F. J. Brucato 1962-5-1 s.n. Contra Costa Antioch; Wilbur Ave. 0 Comment
  RSA119417  Oenothera deltoides subsp. howellii William M. Klein 1958-6-9 438 Contra Costa Sandhills N of Antoch, along the San Joaquin River Channel. 2 Comment
  UCD40945  Oenothera laciniata Ron Unger 2004-3-30 s.n. Contra Costa Emerson parcel near Marsh Creek, just south of Big Break (flooded island) and Jersey Island area. North of town of Oakley and east of town of Antioch and 1 mile southwest of Dutch Slough. Comment
  JEPS100065  Olea europaea A. Langston 2003-7-24 AL 70 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2028046  Olea europaea Barbara Ertter 1998-3-1 15921 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, Sulfur Creek upstream from Good's Spring. Comment
  UC691753  Orobanche bulbosa Mary L. Bowerman 1938-6-24 3694 Contra Costa Pioneer Road junction 853 Comment
  JEPS127839  Orobanche fasciculata Adam C. Schneider 2014-5-15 468 Contra Costa Mt. Diablo State Park. Along summit road, just below Juniper Campground. Comment
  UC1586123  Orobanche fasciculata Barbara Ertter with Elizabeth Neese 1988-4-24 7451 Contra Costa Black Diamond Mines Regional Preserve SW of Antioch, above powerline road E of Nortonville Road. Comment
  UC1819031  Orobanche uniflora Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13945 Contra Costa Mount Diablo State Park, steep west-facing bank with outcrops near weir at mouth of Mitchell Canyon. Comment
  CAS-BOT-BC502955  Orobanche vallicola John Thomas Howell 1929-9-21 4391 Contra Costa Marsh Creek Road, 7 miles SE of Clayton Comment
  POM15646  Orthocarpus attenuatus H. P. Chandler 1901-3-21 843 Contra Costa Concord. Comment
  RSA407949  Orthocarpus purpurascens H. de Forest 1930-4-6 s.n. Contra Costa [No location information provided.] Comment
  SEINET920557  Oxalis corniculata August Hartman 1960-1 32 Contra Costa 2055 Carmel Drive, Concord. 22 Comment
  UC2029079  Oxalis corniculata Barbara Ertter 2000-7-16 17401 Contra Costa Lower Pine Creek in Diablo Foothills Regional Park. Comment
  CAS-BOT-BC318272  Packera breweri Alice Eastwood 1915-5-30 4458 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
  UC2028445  Panicum dichotomiflorum Barbara Ertter with Chris Thayer 1996-10-25 15377 Contra Costa West side of Mount Diablo, North Gate Road 3 road miles below junction, near Mineral Spring Comment
  JEPS77535  Papaver californicum Margaret Ely 1978-5-3 Contra Costa w of Donner Canyon (toward Twin Peaks from Back Creek, n side of Mount Diablo); Mount Diablo 304 Comment
  OBI11697  Papaver heterophyllum Robert F. Hoover 1968-5-16 11091 Contra Costa Upper Marsh Crk Comment
  UCD88471  Parapholis incurva Katharine Brandegee 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  CAS-BOT-BC259646  Paspalum dilatatum John Thomas Howell; Gordon H. True 1972-6-29 48940 Contra Costa Along Byron Hot Springs Road where water has stood, SE of Byron Comment
  CAS-BOT-BC259647  Paspalum dilatatum John Thomas Howell 1954-9-5 30025 Contra Costa Marsh Creek Springs Park Comment
  UC2028420  Paspalum distichum Barbara Ertter 2000-9-30 17538 Contra Costa West side Mount Diablo, pond on west side of Briones-Mount Diablo TRail south of Stonegate Trail junction Comment
  UC691634  Pectocarya pusilla Mary L. Bowerman 1933-5-8 2019 Contra Costa near crest Rock City Ridge (n side by rd to camp ground); Fossil Ridge Comment
  UC766190  Pectocarya pusilla R. F. Hoover 1938-5-4 3351 Contra Costa peak to the e Tassajero Creek Comment
  CDA41866  Pedicularis densiflora D. G. Kelch, A. G. Murdock 2003-3-21 3 .041 Contra Costa Carquinez Strait Region; Martinez; West: Ozol Rock and Scenic Drive. Comment
  HSC101963  Pedicularis densiflora Nikolaus Gillen, Michelle Bihler 2014-3-20 15 Contra Costa Mount Diablo State Park. Eagle Peak Trail. 649 Comment
  POM286383  Pedicularis densiflora Lyman Benson 1931-3-18 2662 Contra Costa Martinez; Mt Range: South Coast; Watershed: Sacramento River. 91 Comment
  UC1818872  Pelargonium inquinans Barbara Ertter, Brad Olson 1994-5-7 12757 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Openings, especially with seepage, near open brush. Comment
  JEPS106989  Pellaea andromedifolia J. Greenhouse with Kevin Hintsa 2004-4-5 5087 Contra Costa Mt. Diablo, Fire Interpretive Trail, Devil's Pulpit 1088 Comment
  CAS-BOT-BC67559  Pellaea mucronata Mary L. Bowerman 1933-3-25 1774 Contra Costa Mount Diablo - ridge north of Emmons Canyon. 335 Comment
  UC399537  Pellaea mucronata var. mucronata Michener May, 1894 Contra Costa Mt Diablo Comment
  JEPS17394  Penstemon centranthifolius Rimo Bacigalupi with G. T. Robbins 1955-5-4 4984 Contra Costa about 1 1/4 mi e Antioch (near the San Joaquin River); near San Joaquin River, e of Antioch 9 Comment
  JEPS4477  Penstemon centranthifolius G. Thomas Robbins 1940-5-19 324 Contra Costa e Antioch; bordering San Joaquin River e of Antioch Comment
  RSA181408  Penstemon centranthifolius James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  UC75108  Penstemon centranthifolius C. F. Baker 1903-4-25 2938 Contra Costa Antioch 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
  JEPS7568  Penstemon heterophyllus var. heterophyllus E. Ferguson 1919-1 Contra Costa Donner Canyon Mt. Diablo, Donner Canyon Comment
  JEPS7569  Penstemon heterophyllus var. heterophyllus W. L. Jepson 1921-6-16 9315 Contra Costa Mt. Diablo Comment
  UC2029184  Pentagramma triangularis Barbara Ertter 1990-5-19 8999 Contra Costa Lafayette Ridge of Briones Regional Park N of Lafayette. Comment
  UC606765  Pentagramma triangularis subsp. triangularis Edward Lee 1936-4-19 2015 Contra Costa ne shore of island Red Rock; San Francisco Bay Comment
  UC691888  Perideridia californica Mary L. Bowerman 1935-5-25 3075 Contra Costa Rhine Canyon Mount Diablo (gully bottom at top of rock gorge) 923 Comment
  UC691889  Perideridia californica Mary L. Bowerman 1933-4-26 1930 Contra Costa Perkins Canyon Mount Diablo (between main e ridge of North Peak and ridge to its south, by edge of stream) 518 Comment
  UC1584690  Perideridia kelloggii Jerry Powell 1987-7-14 1507 Contra Costa Point Molate Beach Comment
  UC1606429  Perideridia kelloggii Barbara Ertter, Brad Olson 1993-8-8 12203 Contra Costa sw San Ramon; Bishop Ranch Regional Open Space Comment
  UC1390000  Perideridia oregana T. I. Chuang, L. Constance, R. S. Mitchell, and S. Banwar 1965-7-23 6009 Contra Costa just below Live Oak Picnic Area; Mount Diablo 487 Comment
  UC691809  Perideridia oregana Mary L. Bowerman 1936-8-8 3525 Contra Costa Emmons Canyon Mount Diablo (w fork) Comment
  CAS-BOT-BC413778  Persicaria lapathifolia D. E. Breedlove 1969-10-18 16719 Contra Costa Along Alhambra Valley Road near junction with Bear Creek Road, SE of Pinole Comment
  CAS-BOT-BC413779  Persicaria lapathifolia Walter Knight 1977-7-15 s.n. Contra Costa At reservoir's edge, golf course, Antioch. Lone Tree Road 30 Comment
  JEPS1454  Phacelia breweri W. L. Jepson 1891-5-24 21009 Contra Costa Mt. Diablo Comment
  UC24300  Phacelia breweri Edw. L. Greene 1892-6-20 Contra Costa Mt. Diablo Comment
  UC604429  Phacelia breweri H. L. Mason 1938-5-3 11750 Contra Costa trail between Juniper Camp and Deer Flat; Mount Diablo 990 Comment
  UCD102377  Phacelia breweri Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. Devils Elbow-Devils Pulpit. 960 Comment
  CDA1102  Phacelia californica D. G. Kelch, A. G. Murdock 2005-5-1 5 .189 Contra Costa Carquinez Strait; Crockett; Edwards Canyon. Comment
  UC2022567  Phacelia ciliata Lewis S. Rose 1932-3-15 3281 Contra Costa Byron Comment
  RSA44378  Phacelia ciliata L. S. Rose 1949-3-24 49009 Contra Costa 1 mile W of Byron. 30 Comment
  UC131485  Phacelia distans C. F. Baker 1903-4-28 2806 Contra Costa Antioch Comment
  UCD120412  Phacelia distans P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. Comment
  RSA276851  Phacelia distans James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  UC672425  Phacelia distans Herbert L. Mason 1929-3-15 5053 Contra Costa canyon back of Nortonville Comment
  UC24351  Phacelia divaricata Harley P. Chandler 1901-4-5 968 Contra Costa Mt. Diablo Comment
  UC672384  Phacelia imbricata Herbert L. Mason 1928-4-26 4388 Contra Costa slopes to n of Lake Temescal; Berkeley Hills Comment
  UC1228354  Phacelia imbricata subsp. imbricata L. R. Heckard 1956-7-17 805 Contra Costa Hampton Rd about 1 mi ne junction with Bear Creek road (n of Lafayette); Briones Hills 213 Comment
  UC691693  Phacelia imbricata subsp. imbricata Mary L. Bowerman 1930-6-5 252 Contra Costa West rd 5.8 mi from entrance; Mount Diablo 457 Comment
  UC735094  Phacelia imbricata subsp. imbricata Lincoln Constance, T. Morley, R. H. Shan, and W. H. Wagner 1946-4-26 3033 Contra Costa trail from Juniper Camp to Deer Flat; Mount Diablo 838 Comment
  UC604428  Phacelia phacelioides H. L. Mason 1938-5-3 11749 Contra Costa trail between Juniper Camp and Deer Flat; Mount Diablo Comment
  UC671742  Phacelia phacelioides Lincoln Constance, Carl W. Sharsmith with Howard S. Reed 1940-4-27 2574 Contra Costa n Juniper Camp; Mount Diablo 762 Comment
  UC691330  Phacelia phacelioides Mary L. Bowerman 1933-5-2 1950 Contra Costa below Pioneer Camp; Mount Diablo 762 Comment
  UC691332  Phacelia phacelioides Mary L. Bowerman 1932-4-16 1343 Contra Costa Eagle Point Mount Diablo (n side) 670 Comment
  JEPS1284  Phacelia tanacetifolia Linda Gehringer 1914-3-29 Contra Costa Brentwood Comment
  JEPS99570  Phacelia tanacetifolia Mary Bowerman 1991-5-21 Contra Costa Comment
  UC2070445  Phalaris arundinacea Barbara Ertter with Chris Thayer, Dianne Lake et al. 2001-5-26 17655 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch. Comment
  CAS-BOT-BC259028  Phalaris lemmonii Ira L. Wiggins 1930-4-17 4583 Contra Costa 1/4 mi. s. of Byron Comment
  UC650564  Phalaris lemmonii Ira L. Wiggins 1930-4-17 4583 Contra Costa 1/4 mi s Byron Comment
  CDA28947  Phalaris minor D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .246 Contra Costa CA Delta; Along the old San Joaquin River Channel, S of Clifton Court Forebay and SE of Byron. Comment
  UCD146727  Phalaris paradoxa G. F. Hrusa; D. Crowe 1998-5-8 14401 Contra Costa Sacramento-San Joaquin River Delta. East end of Dow Chemical property. 15 Comment
  UCD89357  Phalaris paradoxa Katharine Brandegee 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  UC2028531  Phalaris paradoxa Barbara Ertter 1998-5-3 16030 Contra Costa Macedo Ranch at southwest base of Mount Diablo. Comment
  UC84850  Phlox gracilis Katharine Brandegee May 1886 Contra Costa Antioch Comment
  JEPS48538  Phlox gracilis Elsa Kraeger 1926-3-7 Contra Costa just beyond toll gate on road to Mt. Diablo 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
  UC1078913  Phoradendron macrophyllum Job Kuijt 1958-1-12 1443 Contra Costa near Walnut Creek (Saranap); Saranap Comment
  CAS-BOT-BC260886  Phragmites australis Walter Knight; Irja Knight 1978-9-5 3230 Contra Costa Browns Island Comment
  CAS-BOT-BC260887  Phragmites australis Walter Knight; Irja Knight 1978-8-14 3168 Contra Costa Browns Island Comment
  SBBG122964  Phyla nodiflora B. Ertter 1990-9-10 9634 Contra Costa Briones Hills S of Martinez, Maricich Lagoon at jct of Alhambra Crk Trail and Old Briones Rd; Briones Regional Park 335 Comment
  JEPS55997  Pickeringia montana L. R. Heckard and R. Bacigalupi 1968-6-27 Contra Costa n.e. Deer Flat (Bald Ridge, Mt. Diablo); Mt. Diablo, Bald Ridge 670 Comment
  CAS-BOT-BC202274  Pickeringia montana var. montana Mary L. Bowerman 1931-5-2 793 Contra Costa Mount Diablo. North end of Eagle Point ridge Comment
  CAS-BOT-BC76965  Pilularia americana Lewis S. Rose 1940-4-30 40259 Contra Costa 4 mi. S of Antioch 30 Comment
  UC1055936  Pilularia americana Herbert L. Mason 1952-4-14 14261 Contra Costa 3.5 mi s Byron Comment
  CAS-BOT-BC78295  Pinus attenuata John Thomas Howell 1925-9-19 1443 Contra Costa Moraga Ridge, Oakland Hills Comment
  JEPS46915  Pinus attenuata W. L. Jepson 1923-4-22 9876 Contra Costa Mt. Diablo Comment
  UC692077  Pinus attenuata Mary L. Bowerman 1932-3-20 1121 Contra Costa ne fork, toward top of middle ridge Sycamore Canyon Comment
  JEPS46810  Pinus coulteri W. L. Jepson 1931-4-5 15726 Contra Costa Nortonville Comment
  JEPS47871  Pinus coulteri W. L. Jepson 1909-6-25 3116 Contra Costa Mt. Diablo Comment
  UC40359  Pinus coulteri J. G. Lemmon Contra Costa Mitchell Canyon Mt. Diablo Comment
  UC440233  Pinus coulteri Mrs. H. P. Bracelin 1931-3-22 179 Contra Costa Nortonville Comment
  UC691930  Pinus coulteri Mary L. Bowerman 1931-3-8 565 Contra Costa above Mitchell Rock; Mount Diablo Comment
  UC1779708  Pinus halepensis Rudolf Schmid 1997-5-21 1997 -14 Contra Costa Hillside Natural Area, El Cerrito; NW of King Ct. entrance. 175 Comment
  JEPS111990  Pinus radiata D. G. Kelch 2005-4-24 05 .176 Contra Costa Franklin Canyon. Collier Hill. West Carbon 16 Comment
  CAS-BOT-BC72778  Pinus sabiniana Le Roy Abrams 1910-10-8 4350 Contra Costa Mt. Diablo 853 Comment
  JEPS46902  Pinus sabiniana W. L. Jepson 1907-4-26 2649 Contra Costa Mt. Diablo Comment
Read comments
Aug 21 2014
  UC400311  Pinus sabiniana State Survey 1866-5-1 Contra Costa Monte del Diablo Comment
  CAS-BOT-BC137272  Piperia elegans John Thomas Howell 1942-8-23 17862 Contra Costa Field redacted by CAS, contact the data manager for more information Comment
  UC691267  Piperia unalascensis Mary L. Bowerman 1931-5-2 789 Contra Costa n end Eagle Point ridge; Mount Diablo Comment
  UC2028436  Piptatherum miliaceum Barbara Ertter with Chris Thayer 1996-10-25 15353 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028459  Piptatherum miliaceum Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17517 Contra Costa South side Mount Diablo, Pioneer Horse Camp, edge of scrub Comment
  UC2029043  Plagiobothrys acanthocarpus Barbara Ertter 2000-3-19 16894 Contra Costa Southwest flank of Mount Diablo, east of Pine Ridge, below Wall Point Road. Comment
  JEPS111845  Plagiobothrys bracteatus D. G. Kelch 2005-3-25 05 .76 Contra Costa Hercules - Carbon Carbon Road near Route 4 50 Comment
  SEINET3152901  Plagiobothrys canescens L. S. Rose 1933-3-29 33046 Contra Costa Pittsburg Comment
  UC79334  Plagiobothrys canescens Katharine Brandegee May 1888 Contra Costa near Antioch Comment
  RSA8341  Plagiobothrys canescens L. S. Rose 1933-3-29 33046 Contra Costa Pittsburg Comment
  SEINET8731527 Image available Plagiobothrys canescens Lewis S. Rose 1933-1 33046 Contra Costa Pittsburg. Comment
  UC2070493  Plagiobothrys canescens Barbara Ertter 2001-3-18 17567 Contra Costa Shell Ridge Open Space SW of Walnut Creek, dip in Ridge Top Trail where paralleling Costanoan Trail. Comment
  UC766406  Plagiobothrys infectivus R. F. Hoover 1941-4-12 4835 Contra Costa 1 mi n Lone Tree Valley Comment
  CDA1340  Plagiobothrys leptocladus D. G. Kelch 1992-3-21 1824 -A Contra Costa 2.5 mi. SE of Byron; along RR tracks, N of junction of Holey Rd. and Byron Hwy. 0 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
  UC1618196  Plagiobothrys leptocladus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8129 Contra Costa ca. 15 air miles s.w. Stockton (w. and adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  OBI72067  Plagiobothrys leptocladus Barbara Ertter, Jim Jokerst and Dave Magney 1989-4-5 8129 Contra Costa SE county. W and adj to Clifton Ct Forebay, ca 15 air mi SW of Stockton T1S R3E sec 24 SESW Comment
  UC691397  Plagiobothrys nothofulvus Mary L. Bowerman 1935-4-12 2820 Contra Costa west (= North Rd.) Road 2 mi from entrance Mount Diablo 259 Comment
  POM368871  Plagiobothrys nothofulvus H. de Forest 1930-3-28 s.n. Contra Costa Contra Costa County Comment
  UC2070573  Plagiobothrys stipitatus Barbara Ertter with David Gowen and Mike Park 2004-4-13 18348 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, ca 1 km due east of Sidney Flat Headquarters. Comment
  UC101485  Plagiobothrys stipitatus var. stipitatus Katharine Brandegee Contra Costa near Antioch Comment
  UC691336  Plagiobothrys tenellus Mary L. Bowerman 1933-5-8 2033 Contra Costa flat n Rock City Camp; Mount Diablo Comment
  JEPS116913  Plagiobothrys tenellus David Gowen 2009-4-4 979 Contra Costa On hard packed sandy road on Las Trampas Ridge, about midway between Sulpher Springs Trail and Del Amigo Trail. Comment
  UC79220  Plagiobothrys trachycarpus Katharine Brandegee May 1886 Contra Costa near Antioch Comment
  JEPS116943  Plagiobothrys trachycarpus David Gowen 2008-4-16 863 Contra Costa Just south of parking area for Black Diamond Mines Regional Preserve on Frederickson Road. Comment
  CDA21563  Plantago coronopus D. G. Kelch 2008-9-1 8 .295 Contra Costa Carquinez Strait; 200 m W of Pacheco Slough, E of Martinez. Comment
  JEPS111999  Plantago coronopus A. G. Murdock 2004-6-4 318 Contra Costa Pacheco Marsh Salt marsh NE of Waterbird 5 Comment
  UCR263544  Plantago coronopus Barbara Ertter 1990-10-24 9684 Contra Costa San Francisco Bay Region, Martinez Regional Shoreline on Carquinez Strait 2 Comment
  JEPS24312  Plantago elongata S. G. Smith 1957-4-28 2851 Contra Costa 1 mi s Byron Comment
  JEPS37916  Plantago elongata J. T. Howell 1933-3-29 10897 Contra Costa Nortonville Comment
  JEPS85619  Plantago elongata Rimo Bacigalupi with G. T. Robbins 1956-3-26 5529 Contra Costa about 2.5 mi s Byron (just s of Southern Pacific Railroad crossing on road to Bethany, bottomlands near head of Italian Slough) 6 Comment
  UC1950081  Plantago elongata Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8128 Contra Costa alkali sink W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton Comment
  JEPS111993  Plantago erecta D. G. Kelch 2004-4-11 04 .62 Contra Costa Crockett - 5th St. Prairie 85 Comment
  JEPS14540  Plantago erecta G. Thomas Robbins with Peter H. Raven 1956-4-28 3664 Contra Costa just s El Cerrito city limits (along Arlington Ave at Kenilworth Dr); Berkeley Hills 213 Comment
  UC2032811  Plantago lanceolata Doran, Andrew Scott 2012-3-20 681 Contra Costa Brooks island loading dock, North side of island. Comment
  CDA37283  Plantago major D. G. Kelch 2011-3-31 11 .076 Contra Costa Carquinez Region; Richmond; Hilltop Lake Park. Comment
  UC1618336  Plantago major Barbara Ertter, B. Olson, D. Lake, L. Hosley and A. Youngson 1991-10-20 10859 Contra Costa Dow Wetlands Preserve just w of Antioch Marina; Dow Wetlands Preserve Comment
  UC691530  Plantago major Mary L. Bowerman 1932-11-11 1642 Contra Costa Lower Moses Rock Spring Mount Diablo 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
  JEPS51585  Platystemon californicus W. L. Jepson 1887-4-12 Contra Costa Moraga Valley Comment
  CAS-BOT-BC91606  Platystemon californicus Alice Eastwood 1906-5-1 s.n. Contra Costa Berkeley. Comment
  UC1818900  Plectritis ciliosa subsp. ciliosa Barbara Ertter, Mary Bowerman 1994-6-19 12854 a Contra Costa Mt. Diablo State Park east of Walnut Creek; scrub oak thicket north of road, north of lower summit parking lot, next to drainage on north facing slope. Comment
  JEPS2798 Image available Plectritis ciliosa subsp. insignis J. Burtt Davy 1895-4-7 953 Contra Costa foothills Antioch; Antioch, Contra Costa Co. Comment
  JEPS2799 Image available Plectritis macrocera J. Burtt Davy 1895-4-7 951 Contra Costa Antioch; ; Antioch, Contra Costa Co. Comment
  UC28871  Plectritis macrocera Jos. Burtt Davy 1901-4-21 Contra Costa Wildcat Canyon Comment
  UC2027993  Plectritis macrocera Barbara Ertter with Tony Morosco 1998-4-12 16025 Contra Costa Connector trail on north side of Mount Olympia, north side of Mount Diablo. Comment
  CAS-BOT-BC260944  Pleuropogon californicus var. californicus Ynes Mexia 1929-4-21 2388 Contra Costa Junction of Franklin Canyon Comment
  POM194540  Pleuropogon californicus var. californicus Y. Mexia 1929-4-21 2388 Contra Costa Junction of Franklin Canyon. Comment
  UCD90187  Pleuropogon californicus var. californicus R. Tofsrud 1946-4-1 s.n. Contra Costa Concord airfield. Comment
  UC691192  Poa annua Mary L. Bowerman 1933-3-25 1764 Contra Costa off Stone Valley Emmons Canyon; Mt. Diablo Comment
  UCSB12520  Poa annua Grah, Nancy 1962-4-14 Contra Costa .2 miles north of Miner Rd. on Sleepy Hollow Lane, Orinda 182 Comment
  CAS-BOT-BC254883  Poa bulbosa John Thomas Howell 1983-5-12 54747 Contra Costa Juniper Camp, Mount Diablo 914 Comment
  CAS-BOT-BC246644  Poa howellii John Thomas Howell 1933-5-14 11256 Contra Costa Hills east of St. Mary's College Comment
  UC691190  Poa howellii Mary L. Bowerman 1935-5-18 3020 Contra Costa nw facing slope across rd from and a little e of Parking area; Mt Diablo 1066 Comment
  UC912661  Poa howellii Herbert L. Mason 1928-4-15 4350 Contra Costa e end Moraga Ridge Comment
  POM300703  Poa howellii Mary L. Bowerman 1933-3-21 2148 Contra Costa Below Grape Spring (south from Curry Canyon) Comment
  CAS-BOT-BC236386  Poa secunda subsp. secunda Mary L. Bowerman 1933-4-15 1869 Contra Costa Mount Diablo. Canyon S of Arroyo del Cerro: Rocky knoll 250 feet below spring Comment
  CAS-BOT-BC236394  Poa secunda subsp. secunda Alice Eastwood 1921-4-18 10289 Contra Costa Antioch Comment
  UC39568  Poa secunda subsp. secunda Alice Eastwood 1893-5-3 Contra Costa Antioch Comment
  UC579858  Poa secunda subsp. secunda Annetta Carter 1936-4-19 1121 Contra Costa Red Rock; San Francisco Bay Comment
  CAS-BOT-BC236387  Poa secunda subsp. secunda Mary L. Bowerman 1935-4-19 2859 Contra Costa Mount Diablo. Near Turtle Rock, hillside on opposite side of the road 457 Comment
  HSC14299  Pogogyne douglasii Leo Koch 1940-6-5 1002 Contra Costa Saline flat 2 mi. S of San Rafael ferry dock Comment
  JEPS107077  Pogogyne serpylloides Barbara Ertter, Lisa Schultheis 1995-4-27 14017 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; head of west facing scrub-filled draw (east of golf-course). Comment
  JEPS128782  Pogogyne serpylloides Kevin Hintsa 1999-5-25 Contra Costa Mount Diablo State Park, on Meridian Ridge Road a few yards from Deer Flat. Comment
  RSA0022137  Pogogyne serpylloides J. T. Howell 1930-4-22 4747 Contra Costa Bald Peak Comment
  RSA0022141  Pogogyne serpylloides Mary L. Bowerman 1931-5-21 876 Contra Costa Curry Canon. Hard, open flat by Olafsons barn 274 Comment
  UC421583  Pogogyne serpylloides John Thomas Howell 1930-4-22 4747 Contra Costa Bald Peak Comment
  CDA33778  Polycarpon tetraphyllum D. G. Kelch 2011-5-11 11 .246 Contra Costa Carquinez Strait Region.; Crockett. At CREEC nursery Dowlrelio Dr (below bridge). Comment
  UC691131  Polygonum amphibium Mary L. Bowerman 1935-7-22 3185 Contra Costa Hidden Pond Mount Diablo 518 Comment
  POM300597  Polygonum amphibium var. stipulaceum Mary L. Bowerman 1935-7-22 3185 Contra Costa Hidden Pond. 518 Comment
  JEPS99992  Polygonum arenastrum G. Smick 2003-5-8 GAS 176 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UCD150900  Polygonum argyrocoleon James A. Neilson Jr. 1972-10-22 3510 Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 0 Comment
  JEPS121070  Polygonum aviculare Dean G. Kelch and Andrew G. Murdock 2005-6-27 DGK 05 .396 Contra Costa Crockett. 6th Street at Lillian Street. Comment
  UC1478301  Polypodium calirhiza Alan R. Smith with Tom Lemieux 1981-11-19 828 Contra Costa n slope of ridge above Devil's Elbow Trail (between rd. and Devil's Pulpit); Mt. Diablo State Park 1066 Comment
  UC1478304  Polypodium calirhiza Alan R. Smith with Tom Lemieux 1981-11-19 826 Contra Costa n slope Mt. Diablo (creekside ravine along North Gate Rd., 3.6 mi w of (below) Park HQ (South Gate Rd. junction); Mt. Diablo State Park 640 Comment
  UC1948930  Polypodium calirhiza William J. Ferlatte, L. Maynard Moe 1970-4-27 1235 Contra Costa San Francisco Bay: Red Rock Island Comment
  CAS-BOT-BC72043  Polypodium calirhiza Mary L. Bowerman 1935-3-15 2736 Contra Costa Arroyo del Cerro, east fork 262 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
  UC2013051  Polypogon interruptus Barbara Ertter with Tony Morosco 1996-7-27 15031 Contra Costa Mount Diablo State Park, Donner Creek ca halfway between Regency Drive trailhead and old cabin site. 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
  UCD91221  Polypogon monspeliensis A. A. Beetle 1941-6-24 1750 Contra Costa Point Richmond on San Francisco Bay. Comment
  UC2028378  Polypogon viridis Barbara Ertter 1998-6-20 16242 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch Comment
  RSA0026148  Polypogon viridis Barbara Ertter 1998-6-20 16256 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, wet margin of Willow Spring Pond south of Ginder Gap. Comment
  CAS-BOT-BC102383  Populus fremontii Walter Knight; Irja Knight; J. T. Howell; E. McClintock; et al. 1978-9-5 3223 Contra Costa Browns Island Comment
  CAS-BOT-BC267113  Potamogeton Walter Knight; L. R. Heckard; B. Johnson 1978-9-28 3272 Contra Costa Mouth of Crooked Slough, Browns Island Comment
  RSA755535  Potamogeton diversifolius Barbara Ertter, Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  SD211523  Potamogeton diversifolius Barbara Ertter, Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, in shallow water at South end of reservoir 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
  JEPS99587  Potamogeton pectinatus Mary Bowerman 1975-9-14 Contra Costa Mount Diablo, Hidden Pond. Comment
  JEPS78628  Potamogeton pectinatus Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3295 Contra Costa mouth of Crooked Slough; Browns Island, East Bay Regional Park District Comment
  SEINET8355888  Potentilla frondosa E. L. Greene 1889-5-12 Contra Costa Near Maritnez. Comment
  JEPS46549  Proboscidea lutea Mrs. Kate Jared Stirring Sept. 1914 Contra Costa between Concord and Walnut Creek; Ignacio Valley Comment
  JEPS46555  Proboscidea lutea W. E. Chatfield 1959-7-25 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
  JEPS112094  Prunus cerasifera D. G. Kelch 2005-2-28 05 .11 Contra Costa Pinole Valley Near Pinole Valley Road 36 Comment
  UC1789204  Prunus dulcis Barbara Ertter with Dan Norris 2001-4-8 17602 Contra Costa Lime Ridge Open Space, main pit of W quarry area N of adjacent golf course 121 Comment
  CDA26175  Prunus ilicifolia subsp. lyonii D. G. Kelch, A. G. Murdock 2004-5-9 4 .215 Contra Costa Carquinez Strait Region; Crockett - Bull Valley. Hills north of Bull Valley Staging Area. Comment
  CDA26219  Prunus virginiana subsp. demissa A. G. Murdock, D. G. Kelch 2004-5-28 268 Contra Costa Carquinez Strait Region; Pinole Peak. Comment
  JEPS112071  Prunus virginiana subsp. demissa A. G. Murdock 2004-5-28 268 Contra Costa Pinole Peak 205 Comment
  UC1614254  Prunus virginiana var. demissa Charles M. Belshaw 1935-6-10 695 Contra Costa Morgan Territory Road Comment
  JEPS111725  Pseudognaphalium beneolens D. G. Kelch 2004-7-9 04 .304 Contra Costa Martinez - West: Ozol Rock and Scenic Drive; Martinez along Alhambra Drive 3 Comment
  UC691824  Pseudognaphalium californicum Mary L. Bowerman 1935-5-30 3089 Contra Costa Eagle Point ridge 320 Comment
  JEPS111533  Pseudognaphalium stramineum D. G. Kelch 2005-5-5 05 .217 Contra Costa Point Pinole - Giant Marsh Giant Salt Marsh 3 Comment
  JEPS95763  Pseudognaphalium stramineum Dianne Lake 1999-7-9 Contra Costa along S side of road coming up from middle of golf course Franklin Canyon; Hercules 121 Comment
  UC694150  Psilocarphus tenellus H. L. Mason 1928-4-29 4425 Contra Costa Mt. Diablo Comment
  RSA126045  Ptelea baldwinii subsp. crenulata A. D. E. Elmer 1903-05 4327 Contra Costa Mount Diablo. Comment
  POM138987  Ptelea baldwinii subsp. crenulata H. M. Hall 1916-8-17 10277 Contra Costa Upper Horse Valley. 6 miles S of Antioch. 213 Comment
  CAS-BOT-BC148625  Ptelea crenulata Mary L. Bowerman 1930-6-22 357 Contra Costa Mitchell Canyon, Mount Diablo Comment
  CAS-BOT-BC148635  Ptelea crenulata Paul F. Covel 1936-5-17 151 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC148643  Ptelea crenulata V. Rattan 1887-5-22 s.n. Contra Costa Alhambra Val. Comment
  JEPS40166  Ptelea crenulata H. L. Mason 1928-3-31 Contra Costa Mt. Diablo Comment
  JEPS40168  Ptelea crenulata H. L. Mason 1928-3-31 Contra Costa Mt. Diablo Comment
  JEPS40175  Ptelea crenulata F. T. Bioletti 1894-5-13 Contra Costa Mt. Diablo Comment
  SJSU758  Ptelea crenulata C. D. Duncan 1942-4-26 Contra Costa lower E slope, Mt Diablo Comment
  UC1602320  Ptelea crenulata R. C. Wilson 1935-3-26 145 A Contra Costa 0.5 mi w Mt. Zion; Mt. Diablo Quad. 243 Comment
  UC17376  Ptelea crenulata J. Burtt Davy 1895-4-7 909 Contra Costa Antioch Comment
  UC571097  Ptelea crenulata R. Bacigalupi 1926-4-30 1354 Contra Costa near summit Mt. Diablo Comment
  UC1198069  Pterostegia drymarioides Joseph P. Tracy 1934-4-30 13191 Contra Costa near Lafayette 152 Comment
  UCD35992  Pterostegia drymarioides Beecher Crampton 1949-4-1 422 Contra Costa Contra Costa County, Moraga Ridge. 60 Comment
  UC1748009  Quercus E. Dean, M. Bowerman, B. Ertter, J. Tucker, J. Kerbavaz 2000-9-13 656 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
  UCSC009992  Quercus Al Keuter 2014-5-23 00 097 B Contra Costa Along Reliez Valley Road, Lafayette 72 Comment
  JEPS28855  Quercus X morehus James B. Roof, Irja Knight 1962-2-21 Contra Costa Moraga Ridge Comment
  CAS-BOT-BC104162  Quercus X morehus H. E. McMinn 367 Contra Costa 2 1/4 miles E of Edwood Peak on extension of the ridge Comment
  CAS-BOT-BC45655  Quercus agrifolia John Thomas Howell 1950-7-5 26638 Contra Costa Nortonville Comment
  CHSC24131  Quercus agrifolia M. A. Callahan 1976-4-11 1 Contra Costa 45 ft. nnw of house at 1976 Mohawk Dr., Pleasant Hill. Growing on steep hillside; w side Oak Wd. 121 Comment
  JEPS111961  Quercus agrifolia D. G. Kelch 2004-3-12 04 .20 Contra Costa Pinole Valley Hillside and canyon above Wright Road. Off of Pinole Valley Road. Contra Costa County, 130 Comment
  UC1084391  Quercus agrifolia G. Thomas Robbins 1937-4-25 147 Contra Costa 2 mi e Alamo (on road to Mt. Diablo) Comment
  UC521668  Quercus agrifolia Joseph Andorfer Ewan 1933-10-15 8027 Contra Costa sw slope Mt. Diablo 1066 Comment
  UC691315  Quercus agrifolia Mary L. Bowerman 1931-9-27 1049 Contra Costa ne side North Peak; Mount Diablo Comment
  UC691289  Quercus berberidifolia Mary L. Bowerman 1932-9-17 1584 Contra Costa Donner Canyon, w fork Mount Diablo 304 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
  JEPS37845  Quercus chrysolepis W. L. Jepson 1920-8-12 9074 Contra Costa Black Hills Mt. Diablo Comment
  UC1135384  Quercus chrysolepis R. W. Lundh 1932-8-24 137 Contra Costa 2 mi s Mt. Diablo (Rock City); Mt. Diablo Quad. 502 Comment
  UCSB23056  Quercus chrysolepis McMinn, Howard 1922-6-2 Contra Costa Near summit of Mt. Diablo Comment
  CAS-BOT-BC86648  Quercus douglasii John Thomas Howell 1926-3-7 1658 Contra Costa Mt. Diablo near toll gate Comment
  RSA573423  Quercus douglasii Joseph A. Ewan 1933-10-15 8028 Contra Costa Mount Diablo, south slope flat. 762 Comment
  UCD45684  Quercus douglasii John M. Tucker 1941-8-28 385 Contra Costa Beside road up Curry Canyon, 6 miles south of junction with the road from Clayton to Byron, Contra Costa County, California. Comment
  UCD56638  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
  CHSC83198  Quercus garryana B. Ertter; M. Bowerman, E. Dean, J. Tucker, J. Kerbavaz 2000-9-13 654 Contra Costa Mount Diablo State park, Fossil Ridge, just upslope of South Gate Rd., just west of Gibraltar Rock, southeast of Rock City. 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
  UC691288  Quercus garryana Mary L. Bowerman 1930-10-19 491 Contra Costa Fossil Ridge (Garden-of-the-Gods) Mount Diablo Comment
  UC5819  Quercus kelloggii H. P. Chandler 1900-3-24 Contra Costa Orinda Park Mount Diablo Region Comment
  UCSB11595  Quercus kelloggii N. Grah 1962-4-14 110 Contra Costa 1.1 MI N OF TARRY LANE ON TAPPAN LANE ORINDA 243 Comment
  UCSC008851  Quercus kelloggii Al Keuter 2014-5-23 AK 00 -094 Contra Costa Along Wildcat Canyon Road on the northeast side of the first range of hills behind Berkeley. 166 Comment
  JEPS75531  Quercus lobata P. F. Yorks 1976-8-5 512 Contra Costa n of Briones (2.4 km s of Bear Creek Road on Hampton Road in Hampton Road Natural Reserve) 200 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
  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
  CAS-BOT-BC104710  Quercus wislizeni Mary L. Bowerman 1930-7-7 287 Contra Costa Mount Diablo. Summit Comment
  CAS-BOT-BC104717  Quercus wislizeni Le Roy Abrams 1910-10-8 4354 Contra Costa Mt. Diablo summit 1158 Comment
  UC1135854  Quercus wislizeni R. C. Wilson 1935-3-28 154 Contra Costa Top of Mt. Diablo Mt. Diablo Quad. 1158 Comment
  UC1748014  Quercus wislizeni E. Dean with B. Ertter, J. M. Tucker, K. Chaney 2000-9-10 651 Contra Costa El Sobrante Ridge, upslope of the terminus of Heavenly Ridge Rd., jct of Heavenly Ridge Trail and Manzanita Trail El Sobrante 213 Comment
  CAS-BOT-BC104711  Quercus wislizeni Mary L. Bowerman 1934-3-18 2480 Contra Costa Mount Diablo. Russelman Park: End of road Comment
  CAS-BOT-BC104716  Quercus wislizeni H. E. McMinn s.n. Contra Costa Curry Canon [Canyon] Mt. Diablo Comment
  CAS-BOT-BC362446  Rafinesquia californica Volney Rattan 1887-5-22 s.n. Contra Costa Alhambra Val. Comment
  CAS-BOT-BC362441  Rafinesquia californica Mary L. Bowerman 1930-6-14 327 Contra Costa Mount Diablo. Meridian Peak little below summit Comment
  RSA132889  Ranunculus aquatilis var. capillaceus Simon Simonian 1954-8-24 1311 a Contra Costa Entersprise Canal, east-west section crossing of McKinley Ave west of McDonough Ave., 2 miles north of Centerville. Main canal. Comment
  CAS-BOT-BC379108  Ranunculus aquatilis var. diffusus W. W. Carruth 1902-4-29 s.n. Contra Costa Mount Diablo Comment
  CAS-BOT-BC379109  Ranunculus aquatilis var. diffusus A. D. E. Elmer 1903-5-1 4318 Contra Costa Mount Diablo Comment
  UC2029176  Ranunculus aquatilis var. subrigidus Barbara Ertter with Alan Prather 2003-6-7 18190 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, pond NE of main trailhead. Comment
  CHSC24922  Ranunculus californicus M. A. Callahan 1976-4-11 8 Contra Costa Ca. 70 m e of house at 1976 Mohawk Dr. Pleasant Hill, at base of canyon. 129 Comment
  POM268432  Ranunculus californicus Lyman Benson 1935-3-16 6271 Contra Costa Mt. Diablo, Watershed: Walnut Creek; Mountain Range: Mt. Diablo. 915 Comment
  UC1126151  Ranunculus californicus R. C. Wilson 1935-3-27 148 Contra Costa Oyster Pt. Mt. Diablo Quadrangle Comment
  UC1196239  Ranunculus californicus J. P. Tracy 1903-4-18 1804 Contra Costa e slope of hills beyond Bald Peak; Region about San Francisco Bay, Berkeley Hills 304 Comment
  UC70183  Ranunculus californicus J. Burtt Davy May 1898 Contra Costa Danville Region of Mount Diablo Comment
  POM268436  Ranunculus californicus Mary L. Bowerman 1932-3-23 1127 Contra Costa E of Donner Creek 244 Comment
  POM268438  Ranunculus californicus Mary L. Bowerman 1931-2-22 521 Contra Costa Sycamore Canyon Comment
  UC2027730  Ranunculus canus Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15505 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  CDA922  Ranunculus hebecarpus D. G. Kelch 2006-5-4 6 .125 Contra Costa Carquinez Strait; Vaca Canyon, on North facing road cut/bank along Alhambra Valley Road. Comment
  UC692123  Ranunculus hebecarpus Mary L. Bowerman 1931-3-29 613 Contra Costa Riggs Canyon Mount Diablo Comment
  SEINET3816544 Image available Ranunculus hebecarpus Lewis S. Rose 1934-3-21 34071 Contra Costa Marsh Creek, 6 miles east of Clayton. Comment
  SEINET7720851  Ranunculus hebecarpus Chesnut, Drew 1889-4-15 Contra Costa Martinez Comment
  UC634972  Ranunculus hebecarpus H. L. Mason 1929-3-29 5126 Contra Costa two mi above Clayton (Marsh Creek Road) Comment
  POM181430  Raphanus sativus I. L. Wiggins 1930-4-18 4610 Contra Costa Jersey Island. Comment
  UC2028282  Raphanus sativus Barbara Ertter 1998-6-20 16246 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, roadside near Old Borges Ranch. Comment
  CDA9186  Rhamnus crocea Christopher Thayer 1995-6-5 s.n. Contra Costa Carquinez Strait; W of Pinole Peak. Comment
  JEPS42023  Rhamnus ilicifolia W. L. Jepson 7583 Contra Costa Donner Canyon Mt. Diablo 609 Comment
  POM136516  Rhamnus ilicifolia A. D. E. Elmer 1903-05 4326 Contra Costa Mount Diablo. Comment
  UC1121879  Rhamnus ilicifolia G. T. Nordstrom 1937-11-9 1411 Contra Costa 3.2 mi se Somerville; Mt. Diablo Quad. 198 Comment
  UC1121885  Rhamnus ilicifolia R. C. Wilson 1935-2-27 117 Contra Costa 2 mi s Clayton; Mt. Diablo Quad. 259 Comment
  UC1818932  Rhamnus tomentella subsp. tomentella Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14593 Contra Costa East side of Mt. Diablo, mid-slope on Prospectors-Gap Rd. in solid brushland. Comment
  CAS-BOT-BC200695  Rhus aromatica Peter H. Raven; H. L. Mason; R. Ornduff; et al. 1957-4-11 10625 Contra Costa Curry Canyon, 4.0 mi. s. of Recreation Ground Comment
  UC692215  Ribes californicum Mary L. Bowerman 1931-3-7 549 Contra Costa Meridian Peak summit Mount Diablo Comment
  CAS-BOT-BC92922  Ribes californicum var. californicum Earle Mulliken 1905-1-28 49 Contra Costa Wildcat Canon [Canyon], Berkeley Hills. Comment
  CAS-BOT-BC92923  Ribes californicum var. californicum Carl Meyer 1928-2-22 285 Contra Costa Mount Diablo. Comment
  JEPS49338  Ribes malvaceum W. L. Jepson 1921-11-19 9514 Contra Costa halfway up to summit Mt. Diablo Comment
  JEPS79400 Image available Ribes malvaceum Edward Lee with C. Belshaw 1935-12-28 1701 Contra Costa w end Las Trampas Ridge 426 Comment
  JEPS22439  Ribes menziesii Mary L. Bowerman 1930-6-10 314 Contra Costa summit Mt. Diablo Comment
  JEPS79394  Ribes menziesii Edward Lee with Annetta Carter 1936-5-24 2167 Contra Costa 10 mi from Marsh Creek Road; Mt. Diablo, Morgan Territory Comment
  UC692236  Ribes menziesii Mary L. Bowerman 1931-4-19 739 Contra Costa Deer Flat, near spring by trail at upper end of flat Mount Diablo Comment
  UCSB26492  Ribes sanguineum var. glutinosum Keefe, Joseph 1967-3-20 Contra Costa along Huckleberry Trail; 0.5 mile east of Skyline boulevard; near intersection with Grizzly Park Boulevard; east of Berkeley 274 Comment
  UC697154  Rigiopappus leptocladus Mary L. Bowerman 1935-4-22 2890 Contra Costa ridge w Pioneer Road (w of Old Stage Road); Mount Diablo 853 Comment
  UC697163  Rigiopappus leptocladus Mary L. Bowerman 1933-5-8 2016 Contra Costa n side near crest Fossil Ridge; Mount Diablo, n side near crest Fossil Ridge Comment
  CAS-BOT-BC362964  Rigiopappus leptocladus Brandegee No date on label s.n. Contra Costa Antioch Comment
  UC24540  Romanzoffia californica H. N. Bolander 1866-1 6280 Contra Costa Mt. Diablo Comment
  JEPS111063  Romulea rosea var. australis Lee Echols 2003-3-8 s.n. Contra Costa N of Lark Drive in S portion of grassland within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond. 15 Comment
  CAS-BOT-BC74445  Rorippa curvisiliqua J. Bauer 1851-5-1 187 Contra Costa Ad mond Diablo [At Mount Diablo]. Comment
  UC691165  Rosa californica Mary L. Bowerman 1930-8-24 438 Contra Costa by road Mount Diablo, Mitchell Canyon Comment
  SEINET10543527  Rosa sempervirens Walter H. Lewis 2007-10-5 Lewis 21093 Contra Costa Carquinez Regional Shoreline, W of junction of San Pablo Ave. and Vista del Rio. W-facing slope, W coastal scrub along abandoned road. 30 Comment
  JEPS102898  Rosa spithamea Barbara Ertter, Brad Olson 1997-11-1 15878 Contra Costa Knobcone Point Road E of Balancing Rock Mount Diablo 548 Comment
  CAS-BOT-BC147152  Rubus laciniatus Walter Knight; Bill Burley 1979-8-18 3445 Contra Costa Browns Island, Point Emmett Comment
  POM300600  Rubus parviflorus Mary L. Bowerman 1933-5-19 2140 Contra Costa Below Morgan Sulphur Spring. 335 Comment
  LA208234  Rubus parviflorus Joseph Andorfer Ewan; 1936-5-3 9499 Contra Costa Wildcat Creek near Arinda road bridge Comment
  CAS-BOT-BC158773  Rubus ursinus Walter Knight; Joanne Dean 1978-8-14 3167 Contra Costa Browns Island Comment
  UC12995  Rubus ursinus W. H. Brewer 1862-4-30 1013 Contra Costa Camp 69 Walnut Creek (Walnut Creek) Comment
  UC2029019  Rubus ursinus Barbara Ertter 1999-7-17 16767 Contra Costa Tilden Regional Park, trail to Jewell Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  UC2028271  Rumex acetosella Barbara Ertter 1999-6-12 16706 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  CDA22901  Rumex crispus D. G. Kelch 2006-7-14 6 .33 Contra Costa Carquinez Strait; Along Marine Vista Ave immmediately west of Pacheco Slough. East of Martinez. 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
  UC692157  Rumex pulcher Mary L. Bowerman 1938-5-28 3644 Contra Costa Maple Spring, upper margin Mount Diablo Comment
  JEPS111074  Rumex salicifolius var. salicifolius Lee Echols 2003-6-23 s.n. Contra Costa N of Lark Drive in S portion of grassland within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond 15 Comment
  UC1948962  Rumex transitorius William J. Ferlatte, L. Maynard Moe 1970-4-27 1216 Contra Costa San Francisco Bay: Red Rock Island Comment
  RSA762304  Rumex transitorius William J. Ferlatte, L. M. Moe 1970-4-27 1216 Contra Costa San Francisco Bay, Red Rock Island. Comment
  UC2028968  Rumex transitorius Barbara Ertter with Brad Olson et al. 2000-6-2 17299 Contra Costa north side Brushy Peak Regional Preserve NE of Livermore. Comment
  JEPS21987  Rupertia physodes G. Thomas Robbins 1958-5-4 3823 Contra Costa along Pinehurst Road on slopes above Upper San Leandro Reservoir (in hills e of Oakland) 228 Comment
  JEPS111530  Ruppia maritima D. G. Kelch 2005-5-5 05 .214 Contra Costa Point Pinole - Giant Marsh Giant Salt Marsh 3 Comment
  CHSC116611  Sagina apetala Lowell Ahart; Josephine Guardino 2016-4-19 20774 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. 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
  UC1818938  Sagina apetala Barbara Ertter, Mary Bowerman et al. 1995-5-7 14056 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, road behind honses traversing north facing slope, mixed forest with much undergrowth. Comment
  UC692535  Sagina decumbens subsp. occidentalis Mary L. Bowerman 1933-5-8 2028 Contra Costa w. end of second small flat n. of Rock City Camp Comment
  CDA23461  Salicornia pacifica T. C. Fuller 1965-11-24 14323 Contra Costa South side of Byron Hot Springs Road, 0.6 mile southwest of Byron-Tracy Highway, ca. 1 mile southwest of Byron. 0 Comment
  UC7475  Salicornia virginica Hansen Sep 1899 Contra Costa Byron Springs Comment
  UC69370  Salix Wm. W. Mott 1905-3-1 Contra Costa n.e. corner San Pablo Ave. & McAvoy Lane Comment
  CAS-BOT-BC129908  Salix bonplandiana Alice Eastwood 1914-3-6 s.n. Contra Costa Concord Comment
  CAS-BOT-BC129909  Salix bonplandiana Alice Eastwood 1921-4-18 10305 Contra Costa Antioch Comment
  CAS-BOT-BC129922  Salix bonplandiana Barrett Anderson 1987-4-30 3488 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD. 125 Comment
  CDA9516  Salix exigua D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .244 Contra Costa CA Delta; Along the old San Joaquin River Channel, S of Clifton Court Forebay and SE of Byron. Comment
  UCD110901  Salix exigua B. Crampton 1950-7-4 600 Contra Costa Railroad embankment, Richmond. Comment
  CAS-BOT-BC104088  Salix hindsiana Ira L. Wiggins 1930-4-18 4587 Contra Costa Levee banks, Jersey Island Comment
  CDA15248  Salix laevigata G. F. Hrusa, D. Crowe 1998-5-8 14379 Contra Costa Sacramento Delta; Dow Chemical property at Pittsburg adjacent to shore of San Joaquin River. Comment
  POM167375  Salix laevigata W. C. Blasdale 1896-2-29 s.n. Contra Costa Clayton. Comment
  POM167590  Salix laevigata H. M. Hall 1901-3-22 s.n. Contra Costa Pacheco. Comment
  JEPS112248  Salix lasiolepis A. G. Murdock 2004-2-12 208 Contra Costa Franklin Canyon; Along Franklin Canypn east of McHarry Ranch Road Comment
  JEPS75493  Salix lasiolepis P. F. Yorks 1976-1-31 503 Contra Costa n of Briones Reservoir (ca. 1 km. s of Bear Creek Rd. on Hampton Rd.); Hampton Road Natural Reserve 170 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-BC129558  Salix lasiolepis var. lasiolepis Alice Eastwood 1915-6-21 4725 Contra Costa San Leandro Comment
  CAS-BOT-BC129559  Salix lasiolepis var. lasiolepis Alice Eastwood 1914-3-6 s.n. Contra Costa Redwood Canyon Comment
  CAS-BOT-BC129561  Salix lasiolepis var. lasiolepis Alice Eastwood 1914-2-24 3726 Contra Costa Antioch Comment
  RSA666468  Salpichroa origanifolia Barbara Ertter 1991-5-12 9818 Contra Costa Point Isabel Regional Shoreline in SW corner of El Cerrito, on San Francisco Bay. Comment
  CDA20234  Salsola australis P. Akers 2003-10-7 B 107 Contra Costa San Joaquin Valley; Contra Costa water district, E edge of Discovery Bay on Hwy 4. Area a mix of S. australis and S. tragus. 7 Comment
  UC2029165  Salsola soda Barbara Ertter 1990-9-30 9659 Contra Costa NW CONTRA COSTA CO.: Point Pinole Regional Shoreline on San Pablo Bay, north Richmond; edge of salicornia marsh on N edge of park. Comment
  JEPS79010  Salsola tragus Edward Lee with Annetta Carter 1935-8-17 1619 Contra Costa just e. Antioch Comment
  RSA739938  Salsola tragus P. Akers 2003-10-7 B- 107 Contra Costa Contra Costa water district, E edge of Discovery Bay on Hwy 4. 8 Comment
  UC41510  Salsola tragus L. L. Guss 1900-6-1 Contra Costa Antioch Comment
  CAS-BOT-BC220706  Salvia D. M. Curran 1882-8-2 s.n. Contra Costa Antioch Comment
  JEPS62550  Salvia carduacea Chesnut and Drew 1889-4-18 Contra Costa Antioch Comment
  UC691727  Salvia columbariae Mary L. Bowerman 1930-6-7 290 Contra Costa Mount Diablo Comment
  UCD102380  Salvia columbariae Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. Devils Elbow-Devils Pulpit. 1050 Comment
  UCLA70075  Salvia columbariae Lewis S. Rose 1935-5-16 35168 Contra Costa Mt. Diablo Comment
  POM300998  Salvia columbariae Mary L. Bowerman 1933-5-2 1942 Contra Costa Below Pioneer Camp, Mount Diablo. Chaparral- burn (1931) 762 Comment
  JEPS100053  Salvia mellifera G. Smick 2003-3-27 GAS 94 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS49757  Salvia mellifera Rimo Bacigalupi and Alice Howard and Paul Hutchison 1967-3-29 9219 Contra Costa 0.5 mi se head of Bolinger Creek (on w slope of Las Trampas Ridge, in Bolinger Creek drainage); Las Trampas Ridge, Bolinger Creek 390 Comment
  JEPS62740  Salvia mellifera unknown 1919-6-8 8330 Contra Costa Mt. Diablo San Francisco Bay (vicinity of San Francisco Bay) Comment
  RSA15471  Salvia mellifera Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  UC32598  Salvia mellifera Chesnut and Drew 1889-4-16 Contra Costa Summerville Comment
  UC691477  Salvia mellifera Mary L. Bowerman 1932-2-28 1096 Contra Costa n of junction of Curry Canyon and trail to Cave Point; Mount Diablo 533 Comment
  UC691515  Salvia mellifera Mary L. Bowerman 1932-3-6 1104 Contra Costa mouth of Sycamore Canyon; Mount Diablo Comment
  UCD125358  Salvia mellifera Beecher Crampton 1956-5-14 3406 Contra Costa Southern boundary of Mount Diablo State Park. Comment
  UCD36923  Salvia mellifera Beecher Crampton 1956-5-14 3406 Contra Costa Southern boundary of Mount Diablo State Park. Comment
  UC1125344  Sambucus mexicana R. W. Lundh 1932-9-22 165 Contra Costa Mount Diablo Mt. Diablo Quadrangle Comment
  UC1125352  Sambucus mexicana C. M. Belshaw 1936-2-16 1593 Contra Costa 2 1/2 mi nne Orinda; Concord Quadrangle, Briones Valley Comment
  CAS-BOT-BC238634  Sambucus nigra subsp. caerulea Barrett Anderson 1987-4-30 3487 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD 125 Comment
  UCD150884  Sambucus nigra subsp. caerulea James A. Neilson Jr. 1972-11-9 s.n. Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 1 Comment
  JEPS13385  Sambucus racemosa var. racemosa Mrs. E. L. Mossman 1931-4-1 93 Contra Costa Wildcat Canyon Berkeley Hills Comment
  POM224440  Sanicula bipinnata Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. 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
  UCD127997  Sanicula bipinnata P. B. Kennedy 1927-4-10 s.n. Contra Costa Mount Diablo. Comment
  JEPS111596  Sanicula bipinnatifida A. G. Murdock 2004-3-19 236 Contra Costa McEwen Road 150 Comment
  UCD127942  Sanicula bipinnatifida P. B. Kennedy 1914-3-15 4624 Contra Costa Sunset Cemetery. Comment
  CDA38526  Sanicula crassicaulis D. G. Kelch 2003-4-3 3 .367 Contra Costa Carquinez Strait Region; Cummings Skyway. Comment
  PASA1824  Sanicula menziesii Annetta Carter 1929-3-31 Contra Costa Near Clayton. Hills north of Mt. Diablo Comment
  UC735123  Sanicula saxatilis Lincoln Constance, T. Morley, R. H. Shan, W. H. Wagner 1946-4-26 3036 Contra Costa summit s.w. of lookout Mt. Diablo 1158 Comment
  UCD33150  Sasa borealis Beecher Crampton 1966-10-18 7815 Contra Costa Contra Costa County, Kensington, Berkeley Hills Blake Garden, UC Berkeley Dept. of landscape architecture. Comment
  JEPS112483  Satureja douglasii D. G. Kelch 2004-5-2 04 .171 Contra Costa Crockett - Edwards Canyon 112 Comment
  JEPS99950  Saxifraga californica S. O'Neil 2003-2-25 SEO 8 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  SEINET12220596  Saxifraga californica H. M. Hall 1901-1 1633 Contra Costa region of San Francisco Bay Comment
  JEPS100129  Scandix pecten-veneris G. Smick 2003-3-27 GAS 110 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS78622  Schoenoplectus acutus var. occidentalis Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3285 Contra Costa Botany Cove Browns Island, Botany Cove Comment
  CAS-BOT-BC111376  Schoenoplectus acutus var. occidentalis Virginia I. Dains; Walter Knight 1986-8-8 5479 Contra Costa Growing in tidal area, Jct Rock S1 & Werner Cut. Comment
  CAS-BOT-BC111377  Schoenoplectus acutus var. occidentalis John Thomas Howell; Gordon H. True 1972-6-29 48937 Contra Costa Wet soil or shallow water along ditches on Bryon Hot Springs Road SE of Byron. Comment
  CAS-BOT-BC111462  Schoenoplectus californicus LeRoy Abrams 1916-7-29 6305 Contra Costa Martinez Comment
  UC2028376  Schoenoplectus pungens var. longispicatus Barbara Ertter 1998-6-20 16239 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo. Alkali Pond at Wiget Lane entrance. Comment
  UC1618393  Scirpus cernuus 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, (Botany Cove)); Browns Island Comment
  CDA15249  Scirpus maritimus G. F. Hrusa, D. Crowe 1998-5-8 14380 Contra Costa Sacramento Delta; Dow Chemical property at Pittsburg adjacent to shore of San Joaquin River. Comment
  JEPS111881  Scirpus maritimus A. G. Murdock 2004-5-28 300 Contra Costa Luzon 60 Comment
  UC1713668  Scutellaria tuberosa unknown 1027 Contra Costa Walnut Creek Comment
  UC25837  Scutellaria tuberosa unknown 1037 Contra Costa Walnut Creek Comment
  RSA0068478  Scutellaria tuberosa Katie Gallagher, Nick Jensen 2014-4-26 200 Contra Costa Las Trampas Regional Wilderness. 396 Comment
  UC2029001  Scutellaria tuberosa Barbara Ertter 2000-3-30 16920 Contra Costa North side of Mount Diablo, in chaparral near base of Back Canyon Trail. Comment
  UC691406  Scutellaria tuberosa Mary L. Bowerman 1931-4-25 771 Contra Costa summit of Mount Diablo (at the junction of the one-way roads) 1143 Comment
  UC2028051  Sedum radiatum Barbara Ertter with Ann Dennis 1998-1-25 15909 Contra Costa Donner Canyon on north side Mount Diablo, Middle Trail/Falls Trail. Comment
  CAS-BOT-BC363288  Senecio aronicoides L. R. Abrams 1921-5-25 8033 Contra Costa Summit, Mt. Diablo Comment
  CAS-BOT-BC363289  Senecio aronicoides Alice Eastwood 1915-5-30 4535 Contra Costa Mt. Diablo Comment
  JEPS37435  Senecio sylvaticus W. L. Jepson 1943-4-24 20762 Contra Costa vicinity San Francisco Bay; Oakland Hills, Moraga Ridge Comment
  JEPS100174  Senecio vulgaris G. Smick 2003-5-1 GAS 162 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC407393  Senecio vulgaris Ira L. Wiggins 1930-4-18 4597 Contra Costa n end Jersey Island; n end Jersey Island Comment
  RSA572195  Sequoia sempervirens L. S. Rose 1934-1-29 34009 Contra Costa Redwood Canyon Comment
  SEINET3876310 Image available Sequoia sempervirens Michael R. Tansey 1963-2-21 12 Contra Costa North end of Jewel Lake, Tilden Regional Park.; 0 152 Comment
  SEINET3876354 Image available Sequoia sempervirens Judy Kaufman 1963-2-15 9 Contra Costa On slopes of Flicker Ridge.; 0 122 Comment
  UC2012980  Setaria viridis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14921 Contra Costa Northwest base of Mt. Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. 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
  JEPS12499  Sherardia arvensis W. L. Jepson 1896-5-31 Contra Costa Wildcat Creek; Berkeley Comment
  UC1614106  Sherardia arvensis Charles M. Belshaw 1935-6-24 789 Contra Costa ca. 1/2 mi. e. Grizzly Peak (Bald Peak); Bald Peak Comment
  UC1046442  Sidalcea malviflora subsp. laciniata Alex D. Hawkes and R. Bacigalupi 1951-4-21 4771 Contra Costa meadow near Walnut Creek; Meadow near Walnut Creek Comment
  UC2032814 Image available Sidalcea malviflora subsp. laciniata Doran, Andrew Scott 2012-3-20 684 Contra Costa North end of Brooks Island along ridge, cleared area northwest of caretakers residence. Comment
  UC692614  Sidalcea malviflora subsp. laciniata Mary L. Bowerman 1933-4-22 1880 Contra Costa opposite Heather Farm (near the sulphur spring, Shell Ridge where the highway crosses; meadow); Mount Diablo, Shell ridge, oppos Heather Farm Comment
  UC1614102  Sidalcea malviflora subsp. malviflora Charles M. Belshaw 1935-6-24 784 Contra Costa Bald Peak ca. 1/2 miles east of Grizzly Peak Comment
  UC1949061  Sidalcea malviflora var. malviflora Barbara Ertter 1991-6-1 10075 Contra Costa Las Trampas Regional Wilderness in hills W of Danville, steep E-facing slope at N end Rocky Ridge Trail Comment
  JEPS111785  Silene gallica D. G. Kelch 2004-4-30 04 .153 Contra Costa Mt. Wanda - Martinez 115 Comment
Read comments
Oct 13 2009
  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
  UC8497  Silene verecunda subsp. platyota Edw. L. Greene 1892-6-20 Contra Costa Mt. Diablo 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
  CHSC23876  Sinapis arvensis Willis Ball 1975-2-23 445 Contra Costa Contra Loma Regional Park. In area #1. Ca. 10 yds s of lake ca. 50 yds. w of restroom facilities at s end of lake. 33 Comment
  JEPS100011  Sinapis arvensis G. Smick 2003-4-8 GAS 131 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  RSA128364  Sinapis arvensis P. H. Raven 1950-3-5 1405 Contra Costa 0.75 mile from place where it meets Orinda - Richmond Road, Bear Creek Road. 107 Comment
  SEINET12764843  Sinapis arvensis Barbara Ertter 1998-4-4 15959 Contra Costa Northwest of Mount Diablo, west base of northwestern-most ridge, around old orchard.; 0 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
  UC2070555  Sisymbrium orientale Barbara Ertter with David Gowen and Mike Park 2004-4-13 18349 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, River View Loop Trail at N end of ridge E of Sidney Flat Headquarters. Comment
  UC2028288  Sisyrinchium bellum Barbara Ertter 1998-6-20 16232 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. Comment
  JEPS112504  Smilacina stellata A. G. Murdock 2004-4-30 246 Contra Costa Vaca Canyon 165 Comment
  JEPS77013  Smilacina stellata Robert M. Lloyd 1963-3-17 2140 Contra Costa 0.5 mi e intersection of Grizzly Peak Rd. and Skyline Drive (on Skyline (across from 7090 Skyline)); Huckleberry Trail Comment
  CDA5987  Solanum rostratum J. Moon 1959-7-3 Contra Costa Macdonald Avenue and railroad yard, Richmond. 0 Comment
  JEPS12078  Solanum umbelliferum J. Burtt Davy 1895-4-7 985 Contra Costa Antioch Comment
  UC26238  Solanum umbelliferum J. Burtt Davy 1895-4-7 985 Contra Costa Antioch Comment
  SEINET5760775  Solanum umbelliferum Lewis S. Rose 1941-3-13 41026 Contra Costa Marsh Creek, 5 miles east of Clayton Comment
  SEINET7262189 Image available Solanum umbelliferum J. T. Howell 1933-5-14 11291 Contra Costa E of St. Mary's College Comment
  UC1051129  Solanum xanti N. Floy Bracelin 1945-7-22 2583 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  SEINET7262086 Image available Solanum xanti A. A. Heller 1908-4-16 8889 Contra Costa E of Antioch Comment
  JEPS111655  Solidago velutina subsp. californica A. G. Murdock 2003-9-12 198 Contra Costa Selby Along trail to Superfund overlook 40 Comment
  UC691808  Solidago velutina subsp. californica Mary L. Bowerman 1930-8-24 434 Contra Costa Mitchell Canyon , Mitchell Canyon (Mount Diablo) Comment
  JEPS100169  Sonchus asper subsp. asper G. Smick 2003-5-8 GAS 182 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  POM181428  Sonchus oleraceus I. L. Wiggins 1930-4-18 4608 Contra Costa Jersey Island. Comment
  RSA181840  Spartina patens Rolf Mall 1964-11-19 s.n. Contra Costa Southampton tidal marsh at head of Suisun Bay between Benicia and Vallejo, Contra Costa County Comment
  UC1795711  Spartium junceum Barbara Ertter, Gary Schoolcraft 1996-4-7 14582 Contra Costa Molate Beach Park on San Francisco Bay north of San Rafael Bridge; entrance to Western Drive from I-580 east of toll station on San Rafael-Richmond Bridge, road bank Comment
  UCD99169  Spergula arvensis P. B. Kennedy 1914-3-15 4658 Contra Costa Sunset Cemetary. Comment
  UC2028042  Spergula arvensis subsp. arvensis Barbara Ertter 1998-3-1 15925 Contra Costa Diablo Foothills Regional Park, Ridge Trail on ridge east of Old Borges Ranch. Comment
  UC1618227  Spergularia macrotheca Barbara Ertter 1990-10-14 9661 Contra Costa Point Isabel Regional Shoreline San Francisco Bay, El Cerrito (w shoreline, sw El Cerrito) Comment
  HSC4243  Spergularia macrotheca Greg Bos 1963-3-9 30 Contra Costa Point Isabel, Richmond 3 Comment
  NY482313  Spergularia macrotheca B. J. Ertter 1990-10-14 9661 Contra Costa Point Isabel Regional Shoreline on San Francisco Bay in sw El Cerrito Comment
  SEINET8728586 Image available Spergularia macrotheca Leo Koch 1940-1 1001 Contra Costa Two miles south of San Rafael ferry dock 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
  CDA24134  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
  UC2032850  Spergularia marina Doran, Andrew Scott 2012-3-20 721 Contra Costa Northeast part of Brooks Island, on trail to beach along spit. Comment
  SFV1240  Spergularia marina J. M. Tucker 1963-4-12 3687 Contra Costa West side of Holey Road, 3 miles southeast of Byron. Comment
  UC2028173  Spergularia marina Barbara Ertter 1998-5-3 16049 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  CAS-BOT-BC390536  Spergularia media Lewis S. Rose 1941-3-17 41034 Contra Costa 3 mi. s. of Byron 6 Comment
  JEPS127044  Spergularia rubra Lowell Ahart, Josephine Guardino 2016-4-19 20775 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
  JEPS99546  Spergularia rubra Mary Bowerman 1975-4-19 Contra Costa Mount Diablo, Mitchell Canyon. 256 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
  CHSC23016  Spergularia salina Robert A. Schlising 1962-4-7 2141 Contra Costa Coast Ranges. Field along Deer Valley Road, few mi S of Antioch. Comment
  UC1618133  Spergularia villosa Barbara Ertter 1996-4-7 14575 Contra Costa w of Richmond (Point San Pablo at edge of San Francisco Bay, n end of ridge where crossed by road to harbor); San Francisco Bay, Point San Pablo Comment
  UC1795653  Stachys ajugoides var. rigida Barbara Ertter, Brad Olson 1994-5-7 12756 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  JEPS78608  Stachys albens Walter Knight, L. R. Heckard, and Bert Johnson 1978-9-28 3303 Contra Costa Alder Point Browns Island Comment
  UC1191915  Stachys albens Malcolm A. Nobs, S. Galen Smith 1949-7-8 943 Contra Costa 4 mi n Kingston (Otto's Black Bass Resort) Comment
  SEINET5576095  Stachys bullata H. S. Gentry 1931-1 50 Contra Costa Collected near Buckle Point Mt. Diablo. Comment
  JEPS112477  Stachys pycnantha D. G. Kelch 2004-7-9 04 .303 Contra Costa McEwen Road McEwen marsh. McEwen Road North of Cummings Skyway Contra Costa County CA 130 Comment
  UC2055616  Stachys pycnantha Joseph Andorfer Ewan 1933-10-15 8035 Contra Costa SW slope Mt. Diablo. 1066 Comment
  UC2055618  Stachys pycnantha Joseph Andorfer Ewan 1933-10-15 8035 Contra Costa SW slope Mt. Diablo. 1066 Comment
  RSA0027716  Stebbinsoseris heterocarpa Barbara Ertter 1998-5-3 16076 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. 457 Comment
  CAS-BOT-BC393981  Stellaria nitens Alice Eastwood 1914-3-14 3767 Contra Costa Byron Springs Comment
  JEPS51119  Stellaria nitens Rachel G. Mossman 1931-3-22 Contra Costa Grizzly Peak Comment
  CAS-BOT-BC393980  Stellaria nitens John Thomas Howell 1927-3-6 2284 Contra Costa summit of Shell Ridge 243 Comment
  UC2027728  Stellaria pallida Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15508 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028250  Stephanomeria elata Barbara Ertter, Mary Bowerman, Lisa Schultheis 1998-8-21 16399 Contra Costa South side of Mount Diablo, South Gate Road 0.8 miles below entry kiosk. Comment
  UC1394166  Stephanomeria exigua subsp. coronaria L. D. Gottlieb 1969-11-2 6959 Contra Costa e of Antioch (w of Kaiser Gypsum Plant, at Minaker and Wilbur Roads) Comment
  SEINET11800583  Stephanomeria virgata L. S. Rose 1938-1 38308 Contra Costa Marsh Creek, 6 mi E of Clayton 152 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
  UC2070623  Stipa lepida Barbara Ertter 2002-5-11 17847 b Contra Costa Southwest base of Mount Diablo, lower end of Summit Trail in Dan Cook Canyon ca. half mile from South Gate Road. Comment
  UC2029191  Stipa pulchra Barbara Ertter with Brad Olson et al. 2000-6-2 17298 Contra Costa North side Brushy Peak Regional Preserve NE of Livermore Comment
  UC2032833  Stipa pulchra Doran, Andrew Scott 2012-3-20 703 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  CAS-BOT-BC87098  Streptanthus glandulosus subsp. glandulosus John Thomas Howell 1942-7-19 17048 Contra Costa Northeast of Deer Flat, Mount Diablo. Comment
  CAS-BOT-BC87101  Streptanthus glandulosus subsp. glandulosus Mary L. Bowerman 1935-6-8 3123 Contra Costa Mount Diablo. West road 2 miles from entrance. Comment
  JEPS27001  Streptanthus hispidus E. W. Hicks 1917-3-24 112 Contra Costa Mt. Diablo 762 Comment
  UC956588  Streptanthus hispidus Freed W. Hoffman 1949-4-17 2765 Contra Costa Deer Flat Trail a short distance n Juniper Camp 838 Comment
  UC2028384  Stuckenia pectinata Barbara Ertter 1998-6-20 16254 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Willow Spring Pond south of Ginder Gap Comment
  RSA755542  Stuckenia pectinata Barbara Ertter, Brad Olson 1993-8-8 12202 Contra Costa Bishop Ranch Regional Open Space southwest of San Ramon Comment
  JEPS51561  Stylomecon heterophylla W. L. Jepson 1923-6-10 9985 Contra Costa head of Marsh Creek Mt. Diablo; , head of Marsh Creek Comment
  UC112847  Stylomecon heterophylla T. S. Brandegee 1908-4-10 Contra Costa near Antioch; near Antioch Comment
  UC767113  Stylomecon heterophylla R. F. Hoover 1938-5-4 3341 Contra Costa Marsh Creek Canyon Comment
  CAS-BOT-BC422922  Stylomecon heterophylla L. Constance; J. L. Morrison 1938-4-6 2193 Contra Costa NW. base of Mount Diablo, 6 miles SE. of Walnut Creek, Coast Ranges Comment
  OBI9066  Styrax redivivus Neil Havlik 1968-5-19 200 Contra Costa In cultivation, Tilden Botanical Garden, Charles Lee Tilden Regional Park, E of Berkeley Comment
  UC407387  Suaeda moquinii Ira L. Wiggins 1930-4-17 4585 Contra Costa Byron Hot Springs Comment
  SEINET4172257  Suaeda nigra J. B. Davy s.n. Contra Costa Mount Diablo, Sivermore Pass Comment
  JEPS100085  Symphoricarpos albus var. laevigatus A. Langston 2003-7-24 AL 71 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site 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
  JEPS13659  Symphoricarpos mollis H. H. Haworth 1917-5-3 Contra Costa Redwood Peak Comment
  CAS-BOT-BC97699  Symphyotrichum chilense Elizabeth McClintock; Stephen Rae 1978-8-3 s.n. Contra Costa Suisun Bay, Antioch 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-BC98330  Symphyotrichum subulatum var. parviflorum Walter Knight 1978-7-1 3107 Contra Costa Martinez waterfront, near mouth of Alhambra Creek Comment
  CAS-BOT-BC211591  Tamarix Walter Knight 1978-10-4 3316 Contra Costa Browns Island, near old homestead site. Comment
  UC2070603  Tamarix parviflora Barbara Ertter 2002-8-24 Contra Costa Old homestead north of Perkins Canyon mouth at NE base of Mount Diablo. Comment
  JEPS111741  Taraxacum officinale D. G. Kelch 2005-3-24 05 .58 Contra Costa Southern Pt. Pinole 3 Comment
  JEPS33734  Taraxia ovata Mrs. E. L. Mossman 1931-3-12 57 Contra Costa Wildcat Canyon Berkeley Hills 213 Comment
  UCD35996  Taraxia ovata Beecher Crampton 1949-4-21 426 Contra Costa Contra Costa County, city of Richmond, in vacant lot near Santa Fe Railroad, S. 14th Street. 7 Comment
  UC691418  Tauschia hartwegii Mary L. Bowerman 1930-6-14 332 Contra Costa Mount Diablo , Meridian Peak summit on w slope (summit) Comment
  UC691419  Tauschia hartwegii Mary L. Bowerman 1933-4-26 1936 Contra Costa North Peak Mount Diablo (ridge running se from the peak); , , ridge running se from peak 518 Comment
  UC1050709  Thalictrum aquilegifolium N. Floy Bracelin 1941-4-13 1143 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CAS-BOT-BC88248  Thysanocarpus curvipes Alice Eastwood 1915-5-30 4554 Contra Costa Mount Diablo. Comment
  CAS-BOT-BC88251  Thysanocarpus curvipes John Thomas Howell 1933-5-14 11271 Contra Costa Hills east of Saint Mary's College. Comment
  CAS-BOT-BC88256  Thysanocarpus curvipes Katharine Brandegee 1907-5-1 s.n. Contra Costa Antioch. Comment
  CAS-BOT-BC88262  Thysanocarpus curvipes Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mount Diablo. Comment
  UC691143  Thysanocarpus curvipes Mary L. Bowerman 1933-4-9 1842 Contra Costa w fork Donner Canyon Mount Diablo (by trail, Mount Diablo) Comment
  CAS-BOT-BC88263  Thysanocarpus curvipes J. G. Lemmon April s.n. Contra Costa Mount Diablo and northward. Comment
  CAS-BOT-BC66947  Thysanocarpus laciniatus Alice Eastwood 1915-5-30 4553 Contra Costa Mount Diablo. Comment
  POM143757  Thysanocarpus laciniatus C. F. Baker 1903-4-28 2809 Contra Costa Mitchell s Canyon, Mt. Diablo. Comment
  JEPS9890  Tonella tenella Mary L. Bowerman 1935-5-18 3023 Contra Costa Mount Diablo; nw-facing slope across the road from, and a little e of, the parking area 1066 Comment
  POM300996  Tonella tenella Mary L. Bowerman 1935-5-18 3023 Contra Costa Mount Diablo, Northwest facing slope across the road from, and a little east of, the parking area. 1067 Comment
  JEPS99480  Torilis arvensis Mary Bowerman 1975-6-7 Contra Costa Mount Diablo. Big Spring. Comment
  JEPS111629  Torilis nodosa D. G. Kelch 2005-5-1 05 .201 Contra Costa Crockett - Edwards Canyon 100 Comment
  CAS-BOT-BC172934  Toxicodendron diversilobum John Thomas Howell 1933-5-14 11289 Contra Costa Hills east of St. Mary's College Comment
  JEPS63921  Toxicodendron diversilobum W. L. Jepson 1922-5-15 9643 Contra Costa N. Berkeley Hills Comment
  RSA610777  Toxicodendron diversilobum Joseph A. Ewan 1936-7-5 9737 Contra Costa Wildcat Creek Comment
  UC1130477  Toxicodendron diversilobum R. C. Wilson 1935-2-26 107 Contra Costa 1 mi. s.w. Nortonville; Mt. Diablo Quad. Comment
  JEPS65687  Trifolium albopurpureum W. L. Jepson 1923-4-22 9860 Contra Costa Mount Diablo Comment
  UC148547  Trifolium albopurpureum var. albopurpureum Katharine Brandegee 1909-4-24 Contra Costa Antioch Comment
  UC555482  Trifolium albopurpureum var. albopurpureum H. L. Mason 1928-4-29 4437 Contra Costa Sycamore Canyon Mt. Diablo, south slope Comment
  UC555486  Trifolium albopurpureum var. albopurpureum H. L. Mason 1929-3-29 5119 Contra Costa Mt. Diablo 762 Comment
  UC575674  Trifolium albopurpureum var. albopurpureum Lewis S. Rose 1935-5-16 35174 Contra Costa Mt. Diablo Comment
  UC137789  Trifolium albopurpureum var. dichotomum C. F. Baker 1903-4-27 2797 Contra Costa Byron Comment
  UC16500  Trifolium albopurpureum var. dichotomum W. H. Brewer 1862-5-16 1114 Contra Costa n Kirker's Pass Comment
  UCR263556  Trifolium albopurpureum var. dichotomum Barbara Ertter, R. K. Brummitt 1998-5-13 16131 Contra Costa San Francisco Bay Region, Summit Road on Mount Diablo, above Juniper Camp 905 Comment
  UC1795796  Trifolium albopurpureum var. olivaceum Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14225 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 air-mile north of Curry Point. 487 Comment
  UC697198  Trifolium barbigerum Mary L. Bowerman 1942-5-24 3843 Contra Costa lower Rock City Camp Mount Diablo, Fossil Ridge 457 Comment
  UC2070438  Trifolium bifidum Barbara Ertter with Dan Norris 2001-4-8 17591 Contra Costa Lime Ridge Open Space east of Walnut Creek, path northwest of summit installation. Comment
  UC1818894  Trifolium bifidum var. bifidum Barbara Ertter, Mary Bowerman et al. 1995-5-7 14066 Contra Costa Three-Springs Creek, small serpentine patch at road junction, Comment
  UC764663  Trifolium bifidum var. bifidum R. F. Hoover 1938-5-4 3352 Contra Costa e Tassajero Creek (peak) Comment
  CDA27904  Trifolium bifidum var. decipiens D. G. Kelch, A. G. Murdock 2005-5-6 05 -226 Contra Costa Carquinez Strait Region; Franklin Canyon. East of Christie Road. South of Route 4. 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
  UC2027805  Trifolium bifidum var. decipiens Barbara Ertter with Holly Forbes 1997-4-20 15551 Contra Costa North base of Mount Diablo, roadside on trail to Back Creek from Mitchell Canyon trailhead. Comment
  UC2028209  Trifolium bifidum var. decipiens Barbara Ertter 1998-5-3 16072 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  JEPS111083  Trifolium campestre Lee Echols 2003-4-22 s.n. Contra Costa S. of Lark Drive in E portion of grassland W of EPA building within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond 15 Comment
  CDA29796  Trifolium ciliolatum D. G. Kelch, Troy MacGregor 2009-5-1 9 .265 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  SBBG29985  Trifolium ciliolatum J. T. Howell 1933-5-14 11245 Contra Costa hills E of St Mary's College Comment
  UC16416  Trifolium depauperatum var. amplectens Edw. L. Greene 1889-3-24 Contra Costa Byron Comment
  UC165565  Trifolium depauperatum var. amplectens Ivar Tidestrom 1895-4-13 Contra Costa near Lafayette Comment
  POM313531  Trifolium depauperatum var. amplectens P. B. Kennedy 1929-4-25 10245 Contra Costa Briones Valley, Marsh Creek road. Comment
  RSA537536  Trifolium depauperatum var. amplectens Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8134 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton. Comment
  UC16570  Trifolium depauperatum var. hydrophilum J. Burtt Davy 1900-3-24 6529 Contra Costa near Santa Fe townsite (Pt. Richmond) Comment
  UCSC011137  Trifolium depauperatum var. laciniatum R. Morgan 2015-4-11 6740 Contra Costa Byron Comment
  JEPS65731  Trifolium depauperatum var. truncatum W. L. Jepson 1917-4-14 6867 Contra Costa Oakland Hills, near Redwood Peak Comment
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Dec 17 2008
  UC555355  Trifolium depauperatum var. truncatum H. L. Mason 1929-3-15 5061 Contra Costa ca 5 mi from Brentwood (Marsh Creek Rd) Comment
  UC2028953  Trifolium depauperatum var. truncatum Barbara Ertter 2003-3-28 18122 Contra Costa Round Valley Regional Preserve, Fox Trail ca 1/8 mile west of junction with valley trail. Comment
  JEPS100102  Trifolium dubium G. Smick 2003-5-8 GAS 178 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2029021  Trifolium fragiferum Barbara Ertter 1999-7-17 16764 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Wildcat Creek Trail between Rifle Range Road and boundary with Tilden Regional Park. Comment
  UC33446  Trifolium fucatum Jos. Burtt Davy 1895-4-13 999 Contra Costa Lafayette Comment
  UC692316  Trifolium fucatum Mary L. Bowerman 1932-3-23 1124 Contra Costa betw Monument and Concord (Oak Grove School junction); Mount Diablo Comment
  UC1541574  Trifolium fucatum H. E. and S. T. Parks 1930-4-1 542 Contra Costa along hwy (in ditches); San Ramone Comment
  UC631617  Trifolium fucatum P. B. Kennedy 1928-4-28 10094 Contra Costa 2 mi from Tunnel (on hwy) Comment
  UCD109123  Trifolium fucatum P. B. Kennedy 1928-4-28 10097 Contra Costa 2 miles from Tunnel, along highway. Comment
  LA205246  Trifolium gracilentum John Thomas Howell; 1933-5-14 11264 Contra Costa E of St. Mary's College 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
  UC33592  Trifolium gracilentum J. P. Tracy 1900-3-24 622 Contra Costa Point Richmond 15 Comment
  UC555459  Trifolium gracilentum H. L. Mason 1932-3-20 6844 Contra Costa Antioch sand hills Comment
  UC631032  Trifolium gracilentum Ivar Tidestrom 1895-4-13 Contra Costa near Lafayette Comment
  RSA61570  Trifolium gracilentum J. T. Howell 1933-5-14 11249 Contra Costa Hills east of St. Marys college Comment
  CHSC116653  Trifolium hirtum Lowell Ahart; Josephine Guardino 2016-4-19 20759 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Field on the west side of the gravel 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
  JEPS21830  Trifolium incarnatum A. M. Craig 1958-5-19 Contra Costa e West Contra Costa Junior College (San Pablo) 30 Comment
  UC2028325  Trifolium incarnatum Barbara Ertter with Richard K. Brummitt 1998-5-13 16142 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, road from Somersville Road to south leg of Loughler Loop Trail. Comment
  SEINET4178748 Image available Trifolium majus A. A. Heller 1938-4-9 15017 Contra Costa 3 mi. S. W. of Antioch Comment
  JEPS100106  Trifolium microcephalum G. Smick 2003-5-1 GAS 164 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC692244  Trifolium microcephalum Mary L. Bowerman 1932-4-9 1327 Contra Costa e south spur on meridian (small ridge, Inner Black Hills); Mount Diablo Comment
  UC692255  Trifolium microdon Mary L. Bowerman 1933-5-17 2111 Contra Costa due s Olafson's barn (branch of Curry Canyon, on ridge between the two forks of the canyon); Mount Diablo Comment
  UC1795804  Trifolium microdon Barbara Ertter, Lisa Schultheis 1995-4-27 14008 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; northwest side of open grassy ridge at end of Arbolado Dr. 121 Comment
  UC2029064  Trifolium obtusiflorum Barbara Ertter 2000-7-29 17445 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail at east fork of Donner Creek (between main fork and Wild Oat Canyon), trickle of surface water Comment
  UC16685  Trifolium oliganthum J. Burtt Davy 1895-4-13 1002 Contra Costa San Pablo Creek Comment
  UC692645  Trifolium oliganthum Mary L. Bowerman 1932-3-27 1136 Contra Costa below Mitchell Rock; Mount Diablo 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
  JEPS127098  Trifolium tomentosum Lowell Ahart, Josephine Guardino 2016-4-19 20760 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 Spring USGS 7.5' Quad. Comment
  CAS-BOT-BC26494  Trifolium triflorum M. K. Curran 1883-1-1 s.n. Contra Costa Near Mt. Diablo Comment
  SJSU5771  Trifolium variegatum C. O. Dudley 1966-4-16 Contra Costa Reliez Valley, Briones Hills N of Lafayette Comment
  UC16787  Trifolium variegatum Ivar Tidestrom 1893-4-15 Contra Costa Sheep Island Comment
  POM194557  Trifolium variegatum var. melananthum Y. Mexia 1929-4-21 20379 Contra Costa Moraga Valley Comment
  UC2028286  Trifolium variegatum var. variegatum Barbara Ertter 1998-6-20 16237 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. Comment
  CDA15260  Trifolium willdenovii G. F. Hrusa, D. Crowe 1998-5-8 14391 Contra Costa Sacramento Delta; E end of Dow Chemical property in Pittsburg. Comment
  JEPS4355  Trifolium willdenovii W. L. Jepson 1925-4-26 10691 Contra Costa Mt. Diable Comment
  UC1543244  Trifolium willdenovii Donald G. Nelson 1937-3-30 474 Contra Costa s Byron (on rd to Tracy along rr tracks paralleling hwy) Comment
  UC16752  Trifolium willdenovii W. H. Brewer 1862-5-12 1075 Contra Costa Mt. Diablo Comment
  UC407376  Trifolium willdenovii Ira L. Wiggins 1930-4-17 4575 Contra Costa 1/4 mi s Byron Comment
  UC579847  Trifolium willdenovii Annetta Carter 1936-4-19 1110 Contra Costa e side of island Red Rock Comment
  UCD139902  Trillium chloropetalum Morris Halperin 1929-4-21 s.n. Contra Costa St. Mary's College Campus. Comment
  CAS-BOT-BC521014  Trillium chloropetalum var. giganteum J. D. Freeman; R. F. Freeman 1967-5-2 570 Contra Costa Redwood grove 2 mi. SW of Moraga and 1 mi. S of Canyon P.O. Comment
  JEPS99597  Triodanis biflora Mary L. Bowerman 1978-5-14 Contra Costa Mount Diablo, Eagle Peak, mines trail. Comment
  UC2070652  Triodanis biflora Barbara Ertter with David Gowen and Mike Park 2004-4-13 18351 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, trail system in chaparral/woodland S of Somersville townsite, Chaparral Loop Trail just across footbridge from Manhattan Trail cut-off. Comment
  UCR139223  Triphysaria eriantha Joseph A. Ewan 1934-4-8 8762 Contra Costa San Francisco Bay Region, Head of Hog Canyon, S slope of Mount Diablo 640 Comment
  UC1562647  Triphysaria pusilla Barbara Ertter with John Little 1989-4-2 8105 Contra Costa Hillside Park El Cerrito (El Cerrito, level portions of old road); , Hillside Park Comment
  CDA41895  Triphysaria versicolor subsp. faucibarbata D. G. Kelch 2005-5-5 5 .206 Contra Costa Carquinez Strait Region; Point Pinole - Giant Marsh. Giant Salt Marsh. Comment
  UCD139316  Triteleia hyacinthina Henry House 1995-4-30 1995- 19 a Contra Costa East Contra Costa County: ca. 1 km west of Walnut Blvd., ca. 0.5 km south of Marsh Creek Road. 60 Comment
  UC1948966  Triteleia laxa William J. Ferlatte, L. Maynard Moe 1970-4-27 1229 Contra Costa San Francisco Bay: Red Rock Island Comment
  CAS-BOT-BC526330  Triteleia laxa Volney Rattan 1879-1-1 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC526331  Triteleia laxa James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  RSA760668  Triteleia laxa William J. Ferlatte, L. Maynard Moe 1970-4-27 1229 Contra Costa San Francisco Bay, Red Rock Island. Comment
  SEINET3127299  Triteleia laxa H. A. Walker 1906-1 148 Contra Costa Vicinity of Berkeley Comment
  CAS-BOT-BC200472  Triticum aestivum Alice Eastwood 1921-4-18 10314 Contra Costa Antioch Comment
  CAS-BOT-BC67349  Tropidocarpum capparideum Edw. L. Greene 1889-3-23 s.n. Contra Costa Byron. Comment
  JEPS17167  Tropidocarpum capparideum S. Galen Smith and Donald Stone 1957-3-30 2867 Contra Costa 3 mi se Byron (far western end of field just n of the Holey Road); Byron Road 5 Comment
  RSA276848  Tropidocarpum gracile James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  SEINET3404423 Image available Tropidocarpum gracile Lewis S. Rose 1934-3-21 34066 Contra Costa Clayton, 6 miles East of Clayton Comment
  UC136962  Tropidocarpum gracile K. Brandegee April, 1889 Contra Costa Antioch Comment
  UC14397  Tropidocarpum gracile Chesnut and Drew 1889-4-15 Contra Costa Martinez Comment
  UC691064  Tropidocarpum gracile Mary L. Bowerman 1931-3-29 614 Contra Costa at foot Cave Point Ridge; Mount Diablo, Riggs Canyon Comment
  UC1241758  Typha domingensis Malcolm A. Nobs 1950-8-20 Contra Costa Nortonville Comment
  JEPS111915  Ulmus glabra Dean G. Kelch and Andrew G. Murdock 2004-9-2 DGK 04 .341 Contra Costa Martinez (Ozol) CA East of Ozol. Comment
  RSA721868B  Ulmus minor Barbara Ertter, Richard K. Rabeler 1994-6-18 12837 Contra Costa Pt. Pinole Regional Shoreline at north end of Richmond; northeast corner of park, near jct Marsh Trail and Cook's Point Trail. Comment
  CAS-BOT-BC91092  Umbellularia californica Annetta Carter 1937-3-20 1224 Contra Costa Lake Orinda Road, two miles northwest of Orinda. 121 Comment
  CAS-BOT-BC91093  Umbellularia californica Mary L. Bowerman 1931-2-8 514 Contra Costa Mount Diablo. Summit. Comment
  JEPS68942  Umbellularia californica Edward Lee 1935-2-10 1270 Contra Costa Wildcat Creek; Berkeley, Berkeley Hills Comment
  RSA446339  Umbellularia californica H. de Forest 1930-3-28 s.n. Contra Costa Slopes of Mt. Diablo. Comment
  UC1126321  Umbellularia californica R. W. Lundh 1932-9-22 168 Contra Costa 1/2 mi sw of Mount Diablo 914 Comment
  UC691944  Umbellularia californica Mary L. Bowerman 1931-2-8 514 Contra Costa Summit of Mount Diablo Mount Diablo Comment
  RSA121718  Umbellularia californica R. C. Wilson 1935-3-29 156 Contra Costa One mile southwest of Mount Diablo. 1006 Comment
  SEINET5339125  Umbellularia californica P. Del Monte 1976-3-28 s.n. Contra Costa Morgan territory road, 1 mile North of Curry Creek Park. 122 Comment
  JEPS36176  Uropappus lindleyi W. L. Jepson 1918-6-3 7578 Contra Costa Donner Canyon Mt. Diablo 533 Comment
  SEINET3150246  Uropappus lindleyi T. S. Brandegee sn Contra Costa Antioch Comment
  UC2029095  Urospermum picroides Barbara Ertter 1990-6-18 9133 Contra Costa Tilden Regional Park, along Nimitz hiking/bicycle trail near Inspiration Point Comment
  RSA0024903  Urtica Peter Rubtzoff 1968-9-18 5963 Contra Costa North Gate Road, ca. 5 miles northwest of Mt. Diablo State Park north entrance. Comment
  UC692058  Urtica dioica subsp. holosericea Mary L. Bowerman 1931-8-29 1032 Contra Costa Mount Diablo, Sheep Camp Spring, by West Road Sheep Camp Spring; Mount Diablo, Sheep Camp Spring Comment
  UC692059  Urtica dioica subsp. holosericea Mary L. Bowerman 1932-11-25 1665 Contra Costa Mount Diablo, Silver Spring Silver Spring; Mount Diablo, Silver Spring Comment
  CHSC116352  Urtica urens D. G. Kelch 2006-2-25 6084 Contra Costa Carquinez Strait: Crockett. Edwards Canyon. 53 Comment
  UCD164894  Urtica urens Henry House 1995-4-30 1995- 1 Contra Costa About 1 km west of Walnut Blvd., ca. 0.5 km south of Marsh Creek Rd. 60 Comment
  JEPS121073  Verbena lasiostachys D. G. Kelch 2006-8-6 06 .363 Contra Costa Rodeo Creek, in Rodeo. Comment
  RSA29666  Verbena lasiostachys var. lasiostachys Joseph A. Ewan 1936-7-5 9719