Search Results — 2000 specimen records retrieved (1391 records with coordinates)
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Results for search: County=CONTRA COSTA; Source=All;   

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

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC1211990  Abutilon theophrasti R. P. and Perry Allen 1961-8-11 Contra Costa 4 mi e Byron Comment
  SD45086  Acacia verticillata W. W. Jones 1927-6-2 Contra Costa Crockett Comment
  UC1050368  Acacia verticillata N. Floy Bracelin 1942-7-4 2172 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California 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
  JEPS42649  Acer macrophyllum W. L. Jepson 1908-4-4 3005 Contra Costa West Branch San Pablo Creek Comment
Read comments
Jul 7 2011
  UC692718  Acer macrophyllum Mary L. Bowerman 1930-6-5 250 Contra Costa North Road 5.8 mi from entrance (Mount Diablo); , North Road 457 Comment
  SBBG27295  Acer negundo A. Carter 1937-4-4 1229 Contra Costa Moraga Valley, 2.5 mi N of Moraga 182 Comment
  POM247254  Acer negundo subsp. californicum Annetta Carter 1937-3-28 1227 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
  JEPS42725  Acer negundo var. californicum W. L. Jepson 1908-8-16 3084 Contra Costa Walnut Creek 22 Comment
  SEINET242917 Image available Achnatherum parishii Mary E. Barkworth, Surrey W. L. Jacobs; Betty Jacob 2003-4-7 2003 /5 Contra Costa CULTIVATED; Tilden Regional Park, east of Berkeley. Comment
  HSC4584  Achyrachaena mollis Greg Bos 1963-4-28 98 Contra Costa Pinole hills overlooking San Pablo Bay 46 Comment
  POM181443  Achyrachaena mollis I. L. Wiggins 1930-4-17 s.n. Contra Costa 1 mile E of Mountain House on road to Byron Comment
  POM54988  Achyrachaena mollis C. F. Baker 1903-4-27 2795 Contra Costa Byron. Comment
  UC1543174  Achyrachaena mollis Donald G. Nelson 1937-4-18 501 Contra Costa towards Tracy on Marsh Creek Road Byron Comment
  UCD128392  Achyrachaena mollis Morris Halperin 1929-4-21 s.n. Contra Costa Franklin Canyon. Comment
  CAS-BOT-BC391601  Actaea rubra Elsie Zeile 1909-4-18 s.n. Contra Costa Redwood Peak Comment
  CAS-BOT-BC133154  Adenostoma fasciculatum Mrs. Brandegee s.n. Contra Costa Antioch Comment
  JEPS111516  Adenostoma fasciculatum D. G. Kelch 2005-5-13 05 .279 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Ozol rock in chamise chaparral 66 Comment
  JEPS99944  Adenostoma fasciculatum G. Smick 2003-5-13 GAS 190 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1127729  Adenostoma fasciculatum R. W. Lundh 1932-9-9 163 Contra Costa 1/2 mi. s.e. Nortonville; Mt. Diablo Quad. 381 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
  SEINET3449243  Adiantum jordanii Dean G. Kelch, Andrew G. Murdock 2004-2-12 AGM 206 Contra Costa Franklin Canyon, Franklin Canyon, McHarry Ranch Road 126 Comment
Read comments
Sep 26 2014
  UC2061505  Ageratina adenophora Dean G. Kelch 2016-5-27 16 .132 Contra Costa Miller-Knox Hill. Comment
  CAS-BOT-BC29520  Agoseris apargioides R. E. Frenkel 1964-6-20 595 Contra Costa On Giant Road at its junction with Atlas Road, Richmond 16 Comment
  JEPS100119  Agoseris grandiflora G. Smick 2003-4-29 GAS 151 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2028123  Agoseris grandiflora Barbara Ertter with Richard K. Brummitt 1998-5-6 16085 Contra Costa Lower Donner Canyon on north base of Mount Diablo, near Donner Cabin site. Comment
  UC691805  Agoseris grandiflora var. grandiflora Mary L. Bowerman 1930-6-10 296 Contra Costa near (west road) Mineral Spring Comment
  RSA8523  Agoseris heterophylla J. T. Howell 1933-5-14 11260 Contra Costa Hills east of St. Mary's college Comment
  UC691794  Agoseris heterophylla var. heterophylla Mary L. Bowerman 1933-5-18 2127 Contra Costa grassy slope Blackberry Spring; Mount Diablo Comment
  UC691795  Agoseris heterophylla var. heterophylla Mary L. Bowerman 1934-3-18 2482 Contra Costa west of, (in small open flat on the edge of Donner Canyon) Russelman Park; Donner Canyon 365 Comment
  JEPS36324  Agoseris hirsuta W. L. Jepson 1922-5-26 9673 Contra Costa North Berkeley Hills; Berkeley Hills (North) Comment
  UC691427  Agoseris retrorsa Mary L. Bowerman 1935-5-18 3017 Contra Costa along road near parking area Mount Diablo 1127 Comment
  RSA0027649  Agrostis capillaris Barbara Ertter, Amy Rusev 1998-1-17 15903 Contra Costa Edge of Lime Ridge Open Space at NW foot of Mount Diablo, around former quarry (subsequently developed) on south side of Ygnacio Vally Road. Comment
  CAS-BOT-BC127341  Agrostis exarata Mary L. Bowerman 1933-8-26 2413 Contra Costa Mount Diablo. At and below Lower Canyon Spring. 975 Comment
  RSA0033846  Agrostis exarata Barbara Ertter 1999-7-17 16763 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road. Comment
  UC2029201  Agrostis exarata Barbara Ertter 1999-7-17 16763 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Rifle Range Road Comment
  UCD52550  Agrostis exarata var. pacifica Beecher Crampton 1959-9-3 5455 Contra Costa cleared bed of Bear Creek, 2 miles north of Orinda. Comment
  UC2028526  Agrostis hallii Barbara Ertter 1997-11-1 15883 Contra Costa South side Mount Diablo, end of spur road east of Knobcone Point, below powerline crossing at head of Alamo Creek drainage. Comment
  CDA29913  Agrostis pallens D. G. Kelch, Suzanne Latham, Matt Beyers 2009-6-3 9 .335 Contra Costa East Bay.; El Sobrante Ridge at end of Silver Belt Dr. on Miocene chert outcrop. Comment
  SEINET186077  Agrostis pallens Virginia E. Long 1932-5-30 175 a Contra Costa Found along south east rim of Wildcat canyon. 396 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
  JEPS100029  Aira caryophyllea S. O'Neil 2003-5-1 SEO 23 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  RSA151831  Aira caryophyllea Leo Koch, Brian Koch 1947-4-20 1343 Contra Costa between golf course and railroad, 0.5 mile south of Giant. 3 Comment
  UC1818968  Aira caryophyllea Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14527 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, south of crest of Marsh Creek Rd. southeast of Clayton dried grasslands at base of trail. 304 Comment
  CAS-BOT-BC138387  Aira caryophyllea var. caryophyllea Mary L. Bowerman 1942-5-24 3844 Contra Costa Mount Diablo. Lower Rock City Camp, Fossil Ridge. 457 Comment
  RSA720795  Aira caryophyllea var. cupaniana Mary L. Bowerman 1995-5-28 s.n. Contra Costa Mount Diablo. Knoll, N. of Wall Pt. Trail. Trail to Pine Pond from Wall Pt. fire rd. 305 Comment
  UC2028451  Alisma triviale Barbara Ertter with Joanne Kerbavaz 2000-8-20 17500 Contra Costa Frog Pond on southeast side of Mount Diablo Comment
  CAS-BOT-BC175359  Allenrolfea occidentalis J. Burtt Davy 1898-5-1 s.n. Contra Costa Byron Springs, Mt. Diablo region Comment
  UCR142797  Allenrolfea occidentalis E. E. Stanford 1930-1 1871 Contra Costa Sacramento Valley, Near Old River Comment
  CAS-BOT-BC175363  Allenrolfea occidentalis E. E. Stanford 1930-8-1 1871 Contra Costa Near Old River Comment
  RSA411794  Allenrolfea occidentalis E. E. Stanford 1930-08 1871 Contra Costa Near Old River; near sloughs. Comment
  RSA367156  Allium attenuifolium H. de Forest 1930-4-6 s.n. Contra Costa Unspecified. Comment
  UC843254  Allium falcifolium Alice Eastwood 1915-5-30 4531 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC469112  Allium falcifolium L. R. Abrams 1921-5-25 8038 Contra Costa Mt. Diablo, Summit Comment
  CAS-BOT-BC469113  Allium falcifolium Alice Eastwood 1915-5-30 4531 Contra Costa Mt. Diablo Comment
  JEPS112498  Allium serra D. G. Kelch 2004-4-30 04 .151 Contra Costa Mt. Wanda - Martinez 180 Comment
  UC635249  Allium serra H. L. Mason 1929-3-29 5135 Contra Costa Marsh Creek Road 2 mi e Claton; Marsh Creek Road Comment
  CAS-BOT-BC475530  Allium serra Alice Eastwood 1914-3-14 3791 Contra Costa Byron Springs Comment
  CAS-BOT-BC475538  Allium serra Mary L. Bowerman 1930-6-18 338 Contra Costa Rock City Canyon; Mount Diablo Comment
  UC2013015  Allium serra Barbara Ertter 1991-5-5 9782 Contra Costa Black Diamond Mines Regional Preserves S of Pittsburg, N-facing slope below Black Diamond Trail in SW corner of park. Comment
  UC3105  Allium serra H. P. Chandler 1900-3-23 573 Contra Costa Pleasant Valley Comment
Read comments
Aug 23 2008
  CAS-BOT-BC476605  Allium unifolium Alice Eastwood 1916-5-30 4454 Contra Costa Mt. Diablo near base Comment
  UC1093922  Alnus rhombifolia Herbert L. Mason 1924-11-23 1159 Contra Costa Las Trampas Ridge; via Cashion Comment
  POM300606  Alnus rhombifolia Mary L. Bowerman 1931-10-13 1058 Contra Costa Alamo Canyon. Mount Diablo. 259 Comment
  CDA31390  Alopecurus saccatus P. B. Kennedy 1916-5-11 Contra Costa Richmond, Grand View Terrace. 0 Comment
  JEPS127677  Alopecurus saccatus Barbara Ertter with David Gowen and Michael Park 2017-5-2 22798 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  UC691945  Amaranthus albus Mary L. Bowerman 1932-8-27 1515 Contra Costa s of Turtle Rock; Mt. Diablo Comment
  UC2028195  Amaranthus albus Barbara Ertter 1997-8-18 15768 Contra Costa Disturbed area adjacent to Antioch Dunes NWR east of Antioch. Comment
  JEPS85854  Amaranthus deflexus Barbara Ertter with Elizabeth Neese 1988-10-15 7973 Contra Costa w I-580 (jct of Central Ave and Rydin Road, El Cerrito); El Cerrito Comment
  UC1607617  Ambrosia psilostachya Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10690 Contra Costa n. Pittsburg (near confluence of Sacramento & San Joaquin Rivers opposite Pittsburg marina, dry levee near lagoon in center of w. end of island); Browns Island Comment
  CDA6723  Ambrosia trifida J. Clark, C. Beutler 1976-9-1 Contra Costa 2161 Youngs Court, Walnut Creek. 0 Comment
  SEINET11910975  Amelanchier alnifolia W. Knight, Knight, I. 1983-1 4741 Contra Costa Tilden Botanic Garden, Berkeley Comment
  CAS-BOT-BC222230  Amsinckia John Thomas Howell 1933-3-29 10910 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
  UC725924  Amsinckia intermedia A. A. Heller 1941-3-24 15905 Contra Costa Byron Springs 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
  UC1094090  Amsinckia intermedia Francia Chisaki 1954-3-25 569 Contra Costa 3.2 mi w of junction with road entering Mt. Diablo State Park (on road to; (road out of Walnut Creek)) Comment
  CAS-BOT-BC222462  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
  CAS-BOT-BC222463  Amsinckia lunaris Robert F. Hoover 1939-5-20 4105 Contra Costa Lower end of San Pablo Reservoir Comment
  JEPS20865  Amsinckia lunaris R. F. Hoover 1938-4-20 3178 Contra Costa lower end San Pablo Reservoir Comment
  UC1084624  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
  UC56850 Image available Amsinckia lunaris H. M. Hall 1900-3-24 Contra Costa Briones Valley Region of San Francisco Bay; Briones Valley, region of San Francisco Bay Comment
Read comments
Jan 7 2013
  UC762022  Amsinckia lunaris R. F. Hoover 1938-4-20 3178 Contra Costa lower end San Pablo Resevoir Comment
  UC762105  Amsinckia lunaris R. F. Hoover 1939-5-20 4105 Contra Costa lower end of San Pablo Resevoir Comment
  CAS-BOT-BC222459  Amsinckia lunaris R. F. Hoover 1938-4-20 3178 Contra Costa San Pablo Reservoir, (lower end) Comment
  UC2012977  Amsinckia lunaris Barbara Ertter with Chris Thayer 1993-5-7 11707 Contra Costa Ca 1/2 mile north of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park. Comment
  UCR47852  Amsinckia lycopsoides Alfred Sattler 1972-4-2 16 Contra Costa Mt. Diablo Creek Drainage Area, Concord; SE corner of Wilson Lane and West St. 51 Comment
  UC2027923  Amsinckia lycopsoides Barbara Ertter, Dan Norris 2001-4-15 17616 Contra Costa Diablo Foothills Regional Park, Stonegate Trail near Foothills Trail junction. Comment
  CAS-BOT-BC26818  Amsinckia oxycarpa Alice Eastwood 1921-4-18 10312 a Contra Costa Antioch Comment
  UC24597 Image available Amsinckia tessellata J. Burtt Davy 1895-4-7 931 Contra Costa Antioch; ; Antioch, Contra Costa Co. Comment
  UC161764  Amsinckia tessellata var. tessellata C. M. Belshaw 1936-5-9 2084 Contra Costa 1/2 mi n Nortonville 274 Comment
  UC78256  Amsinckia tessellata var. tessellata K. Brandegee 1892-5-1 Contra Costa Antioch Comment
  CDA29026  Anagallis arvensis D. G. Kelch 2006-5-7 6 .156 Contra Costa Carquinez Strait.; Crockett. Upper Edward s Canyon. Comment
  CHSC75115  Anagallis arvensis Roger Thom 1987-5-26 21 Contra Costa 2800 block of Buena Vista Ave. Walnut Creek. 30 Comment
  JEPS112043  Anagallis arvensis A. G. Murdock 2004-3-19 215 Contra Costa Luzon Sycamore Ave. just east of Rodeo/Hercules where train crosses Highway 4 (Luzon) 60 Comment
  JEPS43119  Anagallis arvensis W. L. Jepson 1923-4-22 9865 Contra Costa Mt. Diablo Comment
  UC2031455  Anagallis arvensis Barbara Ertter with David Gowen, Mike Park, Chris Thayer et al. 2014-4-12 21711 Contra Costa South tributary of Perkins Canyon at Prospectors Gap Road, Ginochio property on east side of Mount Diablo Comment
  UC1950199  Anagallis arvensis Barbara Ertter 1993-5-7 11717 Contra Costa Berkeley-Oakland Hills, horse trail southeast of Vollmer Peak east of Tilden Park stream trains Comment
  UC691815  Ancistrocarphus filagineus Mary L. Bowerman 1935-4-17 2834 Contra Costa 2 mi from entrance on West rd (= North Rd), (hillside above serpentine outcrop) Mount Diablo 259 Comment
  UC2027713  Ancistrocarphus filagineus Barbara Ertter with Stu Garrett 1997-3-29 15526 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC2027832  Ancistrocarphus filagineus Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17631 Contra Costa northwest flank of Mount Diablo, Ginochio property north of park boundary on Long Ridge. Comment
  UC691814  Ancistrocarphus filagineus Mary L. Bowerman 1936-4-23 3407 Contra Costa flat below, (upper edge 1778 flat) Moses Rock Spring; Mount Diablo Comment
  CAS-BOT-BC46937  Androsace elongata subsp. acuta Mary L. Bowerman 1932-3-12 1116 Contra Costa Alamo Canyon, 50' above stream. 365 Comment
  JEPS13778  Androsace elongata subsp. acuta J. P. Tracy 1902-3-15 1314 Contra Costa San Pablo Ridge; e of Berkeley Comment
  UC1111009  Androsace elongata subsp. acuta Herbert L. Mason 1928-3-4 4166 Contra Costa Shell Ridge Comment
  JEPS12260  Anemopsis californica W. L. Jepson May 23 1891-May 24 1891 Contra Costa Mount Diablo Comment
  UC306614  Anemopsis californica A. D. E. Elmer June, 1903 4870 Contra Costa Walnut Creek 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
  CAS-BOT-BC400258  Anemopsis californica Miss E. Cannon 1892-6-6 s.n. Contra Costa Marshall Valley, foot of Mt. Diablo Comment
  JEPS84507  Anisocarpus madioides Jack Stratford 1981-5-18 Contra Costa Huckleberry Trail Huckleberry Botanic Regional Preserve Comment
  UC697132  Anthemis cotula Mary L. Bowerman 1930-6-3 228 Contra Costa North Road (1.9 mi from entrance) Mount Diablo 167 Comment
  CAS-BOT-BC84716  Anthemis cotula Mary L. Bowerman 1930-6-3 228 Contra Costa Mount Diablo. North Road, 1.9 miles from entrance 167 Comment
  SEINET884570 Image available Antirrhinum elmeri A. D. E. Elmer 1903-1 4809 Contra Costa Mount Diablo. Comment
  UC691615  Antirrhinum kelloggii Mary L. Bowerman 1933-4-26 1919 Contra Costa ese of North Peak (North Peak ridge, s-face); Mount Diablo 609 Comment
  UC2027940  Apiastrum angustifolium Barbara Ertter with Tony Morosco and other CNPS members 2001-5-6 17621 Contra Costa Northwest flank of Mount Diablo, trail on west face of Black Point. 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
  UC1594204  Apocynum cannabinum Jerry Powell 1991-6-11 1606 Contra Costa Antioch Nat'l Wildlife Refuge Comment
  UC692088  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
  UC692184  Aquilegia formosa Mary L. Bowerman 1931-5-23 896 Contra Costa Alamo Canyon Mount Diablo Comment
  UC10112 Image available Arabis breweri W. H. Brewer 1862-5-14 1086 Contra Costa East Peak, Mt. Diablo Comment
  CAS-BOT-BC128691  Arbutus menziesii C. Keefer 1922-9-25 s.n. Contra Costa Moraga Ridge Comment
  CHSC24747  Arbutus menziesii G. Strang 1976-4-17 14 Contra Costa Pinehurst road 3.5 mi NW of Canyon School on SE facing bank. 152 Comment
  JEPS77022  Arbutus menziesii Robert M. Lloyd 1963-3-17 2147 Contra Costa 1 mi s of Moraga (on road to Castro Valley) Comment
  SBBG50848  Arbutus menziesii A. Hartman 1960-4-19 9 D Contra Costa North Gate Rd, Mt Diablo St Park 609 Comment
  UC615582  Arceuthobium campylopodum Beryl O. Schreiber 1933-10-5 937 Contra Costa rd to Mt Diablo Comment
  CAS-BOT-BC410130  Arceuthobium occidentale J Kuijt 1958-1-22 s.n. Contra Costa Mt. Diablo Comment
  RSA121965  Arctostaphylos andersonii var. pallida B. O. Schreiber 1938-9-18 2548 Contra Costa 0.5 miles south southwest of Round Top. 335 Comment
  RSA139994  Arctostaphylos andersonii var. pallida R. C. Wilson 1935-2-26 105 Contra Costa One mile southwest of Nortonville. 442 Comment
  CAS-BOT-BC24106  Arctostaphylos auriculata Alice Eastwood 1903-2-22 3161 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC24107  Arctostaphylos auriculata L. R. Abrams 1900-10-8 4348 Contra Costa Mt. Diablo 609 Comment
  CAS-BOT-BC24122  Arctostaphylos auriculata Gary D. Wallace 1974-12-26 1372 Contra Costa Mt. Diaablo St. Pk. off Summit Dr. along a ridge E of Curry Point; SE of Balancing Rock. 530 Comment
  JEPS19884  Arctostaphylos auriculata W. L. Jepson 1922-5-23 9662 Contra Costa Head of Sycamore Creek Monte Diablo Comment
  JEPS38915  Arctostaphylos auriculata Mary L. Bowerman 1932-2-13 1086 Contra Costa on ridge between main forks of canyon Mount Diablo; , Alamo Canyon Comment
  POM316531  Arctostaphylos auriculata Mary L. Bowerman 1932-1-23 1075 (Duplicate) Contra Costa Sycamore Canyon, east fork: East edge of chaparral near canyon bottom. Comment
  SD69999  Arctostaphylos auriculata Darley F. Howe 1968-5-21 4519 Contra Costa Mount Diablo. Comment
  UC1120858  Arctostaphylos auriculata H. A. Jensen 1938-10-27 450 Contra Costa head of Curry Canyon Mt. Diablo Quadrangle Comment
  UC692228  Arctostaphylos auriculata Mary L. Bowerman 1931-3-1 536 Contra Costa e meridian (w edge of chaparral); Mount Diablo, Inner Black Hills 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
  UCD50259  Arctostaphylos auriculata H. A. Stout; T. C. Wainwright 1980-3-27 Contra Costa Mallory Ranch, ca. 1 mile east of Morgan Territory Road. 609 Comment
  CAS-BOT-BC23593  Arctostaphylos crustacea Walter Knight 1980-3-6 3719 Contra Costa Redwood Regional Park, East Ridge Trail Comment
  CAS-BOT-BC23552  Arctostaphylos crustacea Neil Havlik; Walter Knight 1982-11-12 4548 Contra Costa Briones Regional Park adjacent to russell Tree Farm. 327 Comment
  SEINET11987135  Arctostaphylos crustacea S. W. Edwards 1981-1 1001 Contra Costa Briones Regional Park, on ridge facing Russell Tree Farm 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
  CAS-BOT-BC24850  Arctostaphylos glandulosa subsp. glandulosa H. E. McMinn 1923-3-6 875 Contra Costa Contra Costa Co. Comment
  CAS-BOT-BC24662  Arctostaphylos glauca Brandegee 1889-1-1 5 Contra Costa Antioch. Comment
  JEPS38723  Arctostaphylos glauca W. L. Jepson 1916-11-12 6854 Contra Costa Mitchell Canyon Mt. Diablo Comment
  UC2028040  Arctostaphylos glauca Barbara Ertter 1998-3-7 15929 Contra Costa Southwest side of Mount Diablo, west-most knoll on Fossil Ridge, at end of fire road. Comment
  RSA632825  Arctostaphylos laevigata Jon E. Keeley 1996-6-24 27584 Contra Costa Above Rock City, Mt. Diablo. 540 Comment
  RSA632828  Arctostaphylos laevigata Jon E. Keeley 1996-6-24 27582 Contra Costa Above Rock City, Mt. Diablo. 540 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
  SEINET223757 Image available Arctostaphylos manzanita subsp. laevigata Alice Eastwood 1922-3-17 11082 Contra Costa Mt. Diablo. Comment
  CAS-BOT-BC24384  Arctostaphylos manzanita subsp. manzanita Mary L. Bowerman 1932-1-19 1073 Contra Costa Mount Diablo, Inner Black Hills. Comment
  CAS-BOT-BC24386  Arctostaphylos manzanita subsp. manzanita Mary L. Bowerman 1936-8-19 3530 Contra Costa Mount Diablo, Pine Canyon mouth, most northerly west-heading streamlet shown on topographic map (now dry). 167 Comment
  CAS-BOT-BC24387  Arctostaphylos manzanita subsp. manzanita Alice Eastwood; John Thomas Howell 1936-4-19 2129 Contra Costa Nortonville. Comment
  CAS-BOT-BC24395  Arctostaphylos manzanita subsp. manzanita M. Boone 1981-2-22 004 Contra Costa Mt. Diablo State Park 10.8 mi. from parks N. gate. Comment
  CAS-BOT-BC24400  Arctostaphylos manzanita subsp. manzanita Mary L. Bowerman 1933-3-25 1765 Contra Costa Mt. Diablo. Diablo Stock Farm (Stone Valley) Canyon, w. fork: toward top of s. face. Also shrubs on n. face of Pine Comment
  RSA164644  Arctostaphylos manzanita subsp. manzanita P. C. Everett 1963-11-19 24552 Contra Costa Mt. Diable, below Gibraltar Rock.Mt. Diablo. Comment
Read comments
Aug 10 2011
  UC32667  Arctostaphylos pallida E. R. Drew 1888-2-22 Contra Costa Moraga Valley Oak. Comment
  RSA202862  Arctostaphylos tomentosa subsp. crustacea Edward Lee 1935-12-28 1704 Contra Costa Western end of Las Trampas Ridge Comment
Read comments
Jul 2 2011
  SD107167  Arctostaphylos tomentosa subsp. crustacea Walter Knight 1980-3-6 3719 Contra Costa Redwood Regional Park, East Ridge Trail Comment
Read comments
Aug 10 2011
  UC1120126  Arctostaphylos tomentosa subsp. crustacea R. C. Wilson 1935-3-27 149 Contra Costa 1 mi s Cave Pt.; Mount Diablo Quadrangle Comment
  UC2042961  Arctostaphylos tomentosa subsp. crustacea Barbara Ertter with Chris Thayer, David Gowen, Kim Kersh 2007-2-11 18787 Contra Costa Flicker Ridge SE of Canyon, NW of junction Pinehurst and Canyon-Moraga roads. Comment
  UC549411  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 626 Contra Costa Moraga Ridge Comment
  UC549440  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1935-10-21 550 Contra Costa Moraga Ridge Comment
  UC549461  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 633 Contra Costa Moraga Ridge Comment
  UC549463  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 630 Contra Costa Moraga Ridge Comment
  UC549467  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 636 Contra Costa Moraga Ridge Comment
  UCR58384  Arctostaphylos tomentosa subsp. crustacea Walter Knight 1980-3-6 s.n. Contra Costa Redwood Regional Park; East Ridge Trail 396 Comment
Read comments
Aug 10 2011
  UCD51336  Arctostaphylos tomentosa subsp. rosei Edward Lee 1935-12-28 1704 Contra Costa Western end of Las Trampas Ridge, Contra Costa County. 426 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-BC102185  Argyranthemum foeniculaceum William Lidicker 1967-4-13 s.n. Contra Costa Brooks Island, San Francisco Bay Comment
  JEPS25152  Argyranthemum foeniculaceum G. Thomas Robbins with John Weiler 1959-5-23 4022 Contra Costa nw extension Brooks Island (on breakwater (partly natural, partly man-made)); San Francisco Bay, Richmond Comment
  JEPS81964  Argyranthemum foeniculaceum Rimo Bacigalupi and L. R. Heckard 1965-5-11 9070 Contra Costa on strand at n end Brooks Island (sw of Richmond, in San Francisco Bay); San Francisco Bay, n end of Brooks Island Comment
  CAS-BOT-BC400403  Aristolochia californica D. E. Breedlove 1970-4-18 17444 Contra Costa At the north edge of Lafayette above Laurel Drive 243 Comment
  JEPS100124  Aristolochia californica G. Smick 2003-2-27 GAS 55 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC400402  Aristolochia californica H. M. Hall 1899-4-23 s.n. Contra Costa Lauterwasser Creek Comment
  POM87995  Aristolochia californica H. M. Hall 1900-3-23 s.n. Contra Costa Lauterwasser Creek Comment
  CAS-BOT-BC84953  Artemisia californica L. R. Abrams 1910-10-8 4339 Contra Costa Mt. Diablo 609 Comment
  JEPS111670  Artemisia californica D. G. Kelch 2003-3-21 03 .48 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 40 Comment
  UC1948939  Artemisia californica William J. Ferlatte, L. Maynard Moe 1970-4-27 1264 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC691664  Artemisia californica Mary L. Bowerman 1930-9-27 469 Contra Costa 2 mi from entrance to Mt. Diablo State Park (North Road); Mount Diablo Comment
  JEPS111683  Artemisia douglasiana D. G. Kelch 2003-8-13 03 .139 Contra Costa Pinole Creek 68 Comment
  UC697143  Artemisia douglasiana Mary L. Bowerman 1932-9-17 1582 Contra Costa w fork Donner Canyon; Mount Diablo Comment
  JEPS87910  Asarum caudatum Barbara Ertter, Chris Thayer 1993-5-7 11698 Contra Costa on Wildcat Canyon Road Hopkins Spring 1/2 mi se Inspiration Point (East Bay Municipal Utilities District Land e of Tilden Park); e of Tilden Park, Hopkins Spring 304 Comment
  JEPS5091  Asclepias californica Mary L. Bowerman 1935-5-1 2944 Contra Costa 4.4 mi from entrance (West road); Mount Diablo 381 Comment
  RSA0031304  Asclepias californica Barbara Ertter 2000-5-14 17019 Contra Costa Donner Basin on north side of Mount Diablo, upper end of Falls Trail near junction of Cardinet Oaks Road. 427 Comment
  UC22951  Asclepias californica State Survey 1890-1 1123 Contra Costa region Mt. Diablo Comment
  SEINET207365  Asclepias cordifolia Rimo Bacigalupi, G. Thomas Robbins 1956-5-11 5642 Contra Costa Franklin Canyon, 1/4 mile above (and northwest of) Glen Frazer Station on the Santa Fe Railway. 107 Comment
  UC22985  Asclepias fascicularis Edw. L. Greene June 1892 Contra Costa Walnut Creek Comment
  RSA0029364  Asclepias fascicularis Barbara Ertter, Mary L. Bowerman, Lisa Schultheis 1996-7-5 14916 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  RSA121907  Asclepias fascicularis H. S. Yates 1934-9-2 4067 Contra Costa One mile southwest of Mt. Diablo 762 Comment
  UC1584827  Asparagus officinalis subsp. officinalis Jerry Powell 1990-8-29 1589 Contra Costa Antioch National Wildlife Refuge Comment
  RSA417743  Aster radulinus M. B. Dunkle 1931-7-18 2532 Contra Costa Strawberry Canyon, Berkeley 152 Comment
  CAS-BOT-BC180529  Astragalus asymmetricus Katharine Brandegee 1908-1-1 s.n. Contra Costa Near Antioch. Comment
  CAS-BOT-BC180571  Astragalus asymmetricus Mrs. E. C. Wright 1917-6-1 s.n. Contra Costa Mt. Diablo Comment
  UC1128838  Astragalus asymmetricus N. French 1935-7-19 644 Contra Costa 1/2 mi e Nortonville; Mt. Diablo Quad., e of Nortonville 304 Comment
  CAS-BOT-BC180575  Astragalus asymmetricus M. K. Curran 1885-5-30 s.n. Contra Costa Marsh Creek, near Mt. Diablo Comment
  UC13345  Astragalus didymocarpus W. H. Brewer 1862-5-19 1115 Contra Costa n (Kirker Pass?) Kirker's Pass; n of Kirker's Pass Comment
  SEINET3127325  Astragalus didymocarpus var. didymocarpus Brandegee sn Contra Costa Antioch Comment
  UC83409  Astragalus gambelianus Katharine Brandegee april 1889 Contra Costa Antioch Comment
  JEPS116914  Astragalus gambelianus David Gowen 2009-4-4 980 Contra Costa Hard packed sandy area just south of Las Trampas Ridge Trail and about 1/4 mile west of junction with Del Amigo Trail. Comment
  SEINET6069536  Athysanus pusillus Unknown 1931-3-10 5754 Contra Costa Mt. Diablo. East side. 7 miles from Clayton on Livermore Road. 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
  UCD148252  Atriplex coronata Robert E. Preston 2013-6-21 2914 Contra Costa 3.5 mi SW of Byron. 62 Comment
  CAS-BOT-BC168543  Atriplex coronata R. E. Frenkel 1964-9-18 855 Contra Costa On Balfour Road, 0.2 mile west of Bixler Road 6 Comment
  JEPS59616  Atriplex joaquinana W. L. Jepson May 1891 Contra Costa Mt. Diablo region Comment
  UC1607605  Atriplex lentiformis Barbara Ertter 1990-10-24 9686 Contra Costa Martinez Regional Shoreline on Carquinez Strait (beaten saline soil along path through saltmarsh); Martinez Regional Shoreline on Carquinez Strait Comment
  JEPS87970  Atriplex prostrata Barbara Ertter with Elizabeth Neese 1988-10-15 7979 Contra Costa in salicornia marsh w. of I-580 in El Cerrito (w side along Rydin Road n of Central Avenue; edge of roadbank and marsh) Comment
  UC2027887  Atriplex prostrata Barbara Ertter with Chris Thayer 1996-10-25 15361 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park. Comment
  RSA299534  Atriplex rosea Walter Knight 1978-8-20 3232 Contra Costa Along Frederickson Lane, Contra Lowa Regional Park. Comment
  NY324276  Atriplex spicata W. H. Brewer 1862-5-31 1190 Contra Costa Joaquin Valley Comment
  SD211583  Atriplex triangularis Barbara Ertter, Elizabeth Neese 1988-10-15 7979 Contra Costa Salicornia marsh West of I-580 in El Cerrito, West side along Rydin Road North of Central Avenue; edge of roadbank and marsh Comment
  JEPS75537  Avena barbata P. F. Yorks 1976-4-28 144 Contra Costa on Hampton Rd 1.3 to 1.9 km s Bear Creek Road (n of Briones Reservoir); Hamton Road Natural Reserve Comment
  UC53773  Avena barbata Jos. Burtt Davy 1899-4-19 7839 Contra Costa Claremont Canyon Comment
  CAS-BOT-BC146024  Avena barbata John Thomas Howell 1983-5-12 54745 Contra Costa Mount Diablo. Juniper Camp. 914 Comment
  CHSC21645  Avena fatua Willis Ball 1975-3-2 469 Contra Costa Contral Loma Regional Park. In area #2. On s side of hill ca. 55 myds. ne of single restroom at sw end of lake. 39 Comment
  JEPS84887  Avena fatua G. D. Barbe 1983-5-22 4081 Contra Costa hillside along fire road n. of Juniper Campground; Mount Diablo State Park 877 Comment
  UC1103340  Avena fatua J. P. Tracy 1900-3-24 631 Contra Costa fields near Stege; Region about San Francisco Bay 3 Comment
  UC697125  Avena fatua Mary L. Bowerman 1931-5-7 809 Contra Costa North Peak Mount Diablo Comment
  RSA381454  Avena fatua G. D. Barbe 1983-5-22 4081 Contra Costa along fire road north of Juniper Campground, Mount Diablo State Park. Comment
  CAS-BOT-BC98190  Baccharis salicifolia Mary L. Bowerman 1932-3-23 1134 Contra Costa Mount Diablo - Donner Canyon stream bed. 152 Comment
  UCD73335  Baccharis salicifolia Chuck Hughes 2008-4-22 26 Contra Costa Marsh Creek at County Jail on Marsh Creek Road. 179 Comment
  CAS-BOT-BC98191  Baccharis salicifolia Ira L. Wiggins 1930-4-18 4600 Contra Costa Near ferr, Jersey Island Comment
  SEINET7239588 Image available Baccharis salicifolia Chesnut, Drew 1889-4-16 s.n. Contra Costa Clayton Comment
  OBI16940  Balsamorhiza deltoidea Rimo Bacigalupi 1955-5-4 4978 Contra Costa S of and above Nortonville, along rd to Irish Cyn 427 Comment
  CDA23064  Barbarea orthoceras D. G. Kelch, D. A. Weinstein 2008-4-25 8 .083 Contra Costa Alvarado Park (west end of Wildcat Canyon Park) on north-facing hillside above Hindu temple in mixed scrub/grassland. Comment
Read comments
Jan 7 2016
  CDA31460  Barbarea orthoceras D. G. Kelch 2006-5-27 6 .218 Contra Costa Pinole Valley Park, S of Pinole Valley Road near crest of El Sobrante Ridge. 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
  UCD35137  Bellardia trixago Beecher Crampton 1949-6-5 468 Contra Costa near Muir. Comment
  UC691926  Berberis pinnata Mary L. Bowerman 1931-2-22 517 Contra Costa e fork Sycamore Canyon; Mt Diablo Comment
  JEPS111807  Beta vulgaris D. G. Kelch 2003-8-13 03 .97 Contra Costa Martinez Marsh 1 Comment
  CDA3008  Beta vulgaris C. Lasser 1960-4-19 Contra Costa State Highway, right of way between Concord Avenue and Grayson Creek. 0 Comment
  UC912220  Bidens frondosa Herbert L. Mason 1929-9-21 5446 Contra Costa 2.6 mi ne of Byron (Borden Highway); Borden Highway Comment
  SJSU5109  Bidens laevis M. Bruck 1960-10-30 48 Contra Costa SW end of Winter Island, New York Slough, confluence of Sacramento & San Joaquin Rivers near Antioch Comment
  UC1618402  Bidens laevis Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10873 Contra Costa just w. Antioch marina (Dow Wetlands Preserve, e. end of marsh across from marina); Dow Wetlands Preserve Comment
  JEPS104714  Blennosperma nanum John L. Morrison 1937-3-6 1972 Contra Costa low hills S of Antioch Comment
  UCR51760  Blennosperma nanum L. S. Rose 1949-3-24 49011 Contra Costa 4 miles south of Byron 8 Comment
  UC1540459  Blennosperma nanum var. nanum Annetta Carter 1937-3-28 1225 Contra Costa 15 mi e, along Marsh Creek Road Concord 152 Comment
  UC579840  Blennosperma nanum var. nanum Annetta Carter 1937-3-7 1223 Contra Costa one mile e Danville; Sycamore Valley Comment
  UC63210  Blennosperma nanum var. nanum H. M. Hall 1901-3-22 1695 Contra Costa Martinez San Francisco Bay Region Comment
  SBBG45059  Blennosperma nanum var. nanum A. Carter 1937-3-28 1225 Contra Costa Marsh Crk Rd, ca. 15 mi E of Concord 152 Comment
  SD211539  Blennosperma nanum var. nanum Barbara Ertter 1992-3-8 10908 Contra Costa Byron Springs Road 4-5 miles South of junction with J4, near Armstring Road Comment
  CAS-BOT-BC100336  Blepharizonia plumosa R. F. Hoover 1937-9-2 2711 Contra Costa 1 mi. w. of Antioch Comment
  JEPS18823  Blepharizonia plumosa R. F. Hoover 1937-8-31 2704 Contra Costa Pittsburg Comment
  CAS-BOT-BC100322  Blepharizonia plumosa Eva Buxton 1994-8-10 1099 Contra Costa Cowell Ranch, ca. 0.5 mi. E and 1 mi. S of Marsh Creek Reservoir Comment
  SEINET183705  Boechera breweri L. Constance, J. L. Morrison 1938-4-5 2192 Contra Costa Near Mitchell Canyon on west slope of Mount Diablo. 610 Comment
  CAS-BOT-BC15961  Boechera breweri subsp. breweri L. Constance; J. L. Morrison 1938-4-5 2192 Contra Costa Near Mitchell Canyon on west slope of Mount Diablo. 609 Comment
  UC311620  Boechera breweri subsp. breweri E. W. Hicks 1917-3-24 111 Contra Costa w slope Mt. Diablo 1067 Comment
  CAS-BOT-BC15960  Boechera breweri subsp. breweri E. W. Hicks 1917-3-24 111 Contra Costa Mount Diablo. Western slope of the mountain. 1067 Comment
  UCD102381  Boechera breweri subsp. shastaensis Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. Devils Elbow-Devils Pulpit. 900 Comment
  CAS-BOT-BC31330  Bolboschoenus maritimus John Thomas Howell 1978-9-5 53356 Contra Costa Pittsburg Marina. Comment
  CAS-BOT-BC31331  Bolboschoenus maritimus John Thomas Howell; Gordon H. True 1972-6-29 48943 Contra Costa Low places along Byron Hot Springs Road, SE of Byron. Comment
  CAS-BOT-BC95309  Bowlesia incana John Thomas Howell 1933-3-29 10901 Contra Costa Nortonville hills Comment
  CAS-BOT-BC30261  Brassica nigra Mary L. Bowerman 1938-5-25 3633 Contra Costa North Road 2 miles from North Gate. 182 Comment
  UC691067  Brassica rapa Mary L. Bowerman 1932-5-6 1409 Contra Costa Mount Diablo, w bank of Mitchell Canyon Mitchell Canyon; Mount Diablo, Mitchell Canyon 182 Comment
  CAS-BOT-BC106324  Brickellia californica R. Bacigalupi 1922-9-24 s.n. Contra Costa Mitchell Canyon - Mt. Diablo Comment
  JEPS99490  Briza maxima Mary Bowerman 1995-6-4 Contra Costa Mount Diablo, Pine canyon by fire road. Comment
  JEPS127232  Briza minor Lowell Ahart, Josephine Guardino 2016-4-19 20789 Contra Costa 1.4 miles (air) northwest of Los Vaqueros Reservoir Marina, 1.9 miles (air) southwest of Los Vaqueros 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
  UC2028369  Brodiaea elegans subsp. elegans Barbara Ertter 1998-6-20 16248 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Gypsy Ridge SW of Old Borges Ranch Comment
  UC650431  Brodiaea terrestris subsp. terrestris Ira L. Wiggins 1930-4-17 4573 Contra Costa near Byron Comment
  JEPS97560  Bromus carinatus R. D. Stone 1980-7-13 276 Contra Costa Huckleberry Trail Oakland Hills, near Alameda-Contra Costa county line (NE of intersection of Skyline Blvd. and Snake Road) Comment
  UCD58127  Bromus carinatus A. A. Beetle 1942-3-22 2931 Contra Costa Brooks Island in San Francisco Bay. Near Richmond. Comment
  UC677607  Bromus carinatus var. carinatus A. A. Beetle 1942-3-22 2931 Contra Costa near Richmond (San Francisco Bay, Brooks Island); San Francisco Bay, Brooks Island Comment
  POM300672  Bromus diandrus Mary L. Bowerman 1932-4-27 1366 Contra Costa Oyster Ridge, south face of ridge west of Riggs Canyon Comment
  UC1948969  Bromus diandrus William J. Ferlatte, L. Maynard Moe 1970-4-27 1220 Contra Costa San Francisco Bay: Red Rock Island Comment
  POM300689  Bromus hordeaceus Mary L. Bowerman 1933-4-15 1870 Contra Costa Canyon south of Arroyo del Cerro: Rocky knoll 250 feet below spring. Comment
  SEINET10514555  Bromus hordeaceus Knowles 1941-1 KNOWLES 87 -10 Contra Costa Briones Hills, cultivated, greenhouse. Comment
  UC691133  Bromus laevipes Mary L. Bowerman 1933-6-20 2324 Contra Costa Mount Diablo, Median Ridge in Donner Canyon Donner Canyon; Mount Diablo, Median Ridge, Donner Canyon 304 Comment
  UCD36921  Bromus madritensis Beecher Crampton 1956-5-14 3401 Contra Costa Mount Diablo, south of Windy Point. 640 Comment
  UC691214  Bromus madritensis subsp. madritensis Mary L. Bowerman 1933-5-11 2087 Contra Costa Mount Diablo, Inner Black Hills Inner Black Hills; Mount Diablo, Inner Black Hills Comment
  UC692348  Bromus madritensis subsp. rubens Mary L. Bowerman 1933-5-2 1944 Contra Costa below Pioneer Camp (Mount Diablo); Mount Diablo 762 Comment
  UC697124  Bromus madritensis subsp. rubens Mary L. Bowerman 1935-5-8 2979 Contra Costa first main ridge e of Pioneer Camp (Mount Diablo); Mount Diablo Comment
  SEINET3922478  Bromus mollis P. F. Knowles 1942-1 B 79 Contra Costa Briones HIlls. Davis.; 0 Comment
  SEINET3923058  Bromus rigidus Beecher Crampton 1956-5-14 3378 Contra Costa Contra Costa County, 4.6 miles south of the city of Antioch, on Empire Mine Drive, at head of Horse Valley.; 0 Comment
  UCD59573  Bromus rubens P. B. Kennedy 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  POM300687  Bromus rubens Mary L. Bowerman 1933-3-18 1751 Contra Costa Mt. Diablo below the chaparral belt, a little east of the meridian 549 Comment
  CDA31607  Bromus stamineus D. G. Kelch, A. G. Murdock 2005-6-27 5 .395 Contra Costa Carquinez Strait; 6th Street at Lillian Street, Crockett. Comment
  JEPS111868  Cakile maritima D. G. Kelch 2004-7-9 04 .313 Contra Costa Rodeo Shoreline 0 Comment
  SEINET186069 Image available Calamagrostis rubescens Virginia E. Long 1933-6-14 222 a Contra Costa Mt. Diablo. Inner Black Hill. Northern slope. 564 Comment
  CAS-BOT-BC438370  Calandrinia ciliata Alice Eastwood 1914-2-24 3741 Contra Costa Antioch Comment
  CHSC116660  Calandrinia ciliata Lowell Ahart; Josephine Guardino 2016-4-19 20777 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
  SD41282  California macrophylla McCallum 1933-4-26 3696 Contra Costa Near road to Tassajara Comment
  JEPS65180  Callitriche longipedunculata L. R. Heckard 1971-4-15 2487 Contra Costa In field at intersection of Holey Road, south of Byron 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
  UC570761  Callitriche marginata H. L. Mason 1932-3-16 6810 Contra Costa At east edge Walnut Creek, along S.P. Railroad track Comment
  UC2031422  Calochortus albus Barbara Ertter 1991-6-1 10086 Contra Costa Las Trampas Regional Wilderness in hills W of Danville, Elderberry Trail ca. 1/2 mi from trailhead Comment
  JEPS102916  Calochortus argillosus Barbara Ertter with Dan Norris 1998-6-18 16209 Contra Costa South Gate Road ca 1 mi from entrance Mount Diablo 304 Comment
  JEPS61679  Calochortus luteus W. L. Jepson 1921-5-22 9216 Contra Costa Mt. Diablo Comment
  UCD164657  Calochortus luteus Henry House 1995-5-16 1995- 24 Contra Costa Adjacent to Highway 113, about 0.2 km south of Creek Road. 6 Comment
  CAS-BOT-BC132490  Calochortus pulchellus R. F. Hoover 1968-5-16 11092 Contra Costa Upper Marsh Creek Comment
  CAS-BOT-BC132498  Calochortus pulchellus A. D. E. Elmer 1903-6-1 4631 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC132502  Calochortus pulchellus L. R. Abrams 1921-5-25 8053 Contra Costa 4 1/2 mi from summit, Mt. Diablo Comment
  LA22451  Calochortus pulchellus Carl Purdy; 1899-5-15 sn Contra Costa Mt. Diablo Comment
  OBI21346  Calochortus pulchellus Robert F. Hoover 1968-5-16 11092 Contra Costa Upper Marsh Creek Comment
  UC194919  Calochortus pulchellus H. M. Hall 1916-5-30 10132 Contra Costa near Pine Canyon; Mt. Diablo 365 Comment
  UC691993  Calochortus pulchellus Mary L. Bowerman 1930-6-5 242 Contra Costa 5.8 mi from entrance (= North Gate) (West road (=North Rd)); Mount Diablo 457 Comment
  CAS-BOT-BC132503  Calochortus pulchellus H. M. Hall 1916-5-30 10132 Contra Costa Mt. Diablo, north slopes, near Pine Canyon 365 Comment
  RSA68634  Calochortus umbellatus Frank W. Peirson 1926-4-11 6639 Contra Costa Along summit of hills back of Albany Comment
  UC1779713  Calochortus umbellatus Rudolf Schmid 1997-4-8 1997 -2 Contra Costa Hillside Natural Area, El Cerrito; SW of Kent Dr. - Regency Ct. entrance, N side of juncttion of the two main fire roads. 144 Comment
Read comments
Apr 2 2012
  UC88982  Calycadenia multiglandulosa K. Brandegee 1884-7-1 Contra Costa Antioch Comment
  UC2027942  Calycadenia truncata Barbara Ertter 1997-9-7 15799 Contra Costa North side Mount Diablo, Falls Trail in Donner Canyon. Comment
  UC2027952  Calycadenia truncata Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17512 Contra Costa North side Mount Olympia in Mount Diablo State Park, bulldozed site of former occupation at Zippe Spring. Comment
  CAS-BOT-BC275400  Calycadenia truncata var. truncata A. D. E. Elmer 1903-7-1 4759 Contra Costa Mount Diablo Comment
  JEPS75539  Calystegia purpurata P. F. Yorks 1974-5-19 164 Contra Costa on Hampton Road in Hampton Road Natural Reserve ca 2 km s Bear Creek Road (n of Briones Reservoir); Hampton Road Natural Reserve, n of Briones Reservoir 200 Comment
  RSA760670  Calystegia purpurata William J. Ferlatte, L. Maynard Moe 1970-4-27 1236 Contra Costa San Francisco Bay, Red Rock Island. Comment
  JEPS111813 Image available Calystegia sepium subsp. binghamiae A. G. Murdock 2004-6-4 321 Contra Costa Pacheco Marsh Comment
  CDA39892  Calystegia sepium subsp. limnophila A. G. Murdock 2004-6-4 321 Contra Costa Carquinez Strait Region; Pecheco Marsh. Comment
  UC1965403  Calystegia subacaulis R. K. Brummitt and B. Ertter 2012-6-17 22061 Contra Costa Berkeley Hills, Tilden Park, Seaview Trail north of Vollmer Peak Comment
  RSA0059779  Calystegia subacaulis Thekla Mohr 1917-07 3164 Contra Costa Mt. Diablo. Comment
  JEPS100014  Calystegia subacaulis subsp. subacaulis G. Smick 2003-5-6 GAS 170 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1794983  Calystegia subacaulis subsp. subacaulis R. K. Brummitt and B. Ertter 1998-5-6 19784 Contra Costa Mt. Diablo, NW side, path to Mitchell's Rock 300 Comment
Read comments
Aug 3 2013
  UC140592  Camissonia campestris subsp. campestris C. F. Baker 1903-4-28 2807 Contra Costa in sandhills Antioch Comment
  UC20452  Camissonia campestris subsp. campestris J. Burtt Davy 1895-4-7 879 Contra Costa Antioch Comment
  UC2028236  Camissonia contorta Barbara Ertter, Tony Morosco 1998-9-18 16438 Contra Costa North side Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2028261  Camissonia hirtella Barbara Ertter 1999-6-12 16719 Contra Costa Knobcone Point Road on south side of Mount Diablo, burned chamissal at head of NE fork of Sycamore Creek. Comment
  RSA186560  Camissonia micrantha Peter H. Raven 1963-3-29 18143 Contra Costa About 1 mile south of Oakley on State Highway 4 at junction of Brownstone Road Comment
  UC2070451  Camissoniopsis micrantha Barbara Ertter with Dan Norris 2001-4-8 17600 Contra Costa Lime Ridge Open Space east of Walnut Creek. Comment
  RSA100285  Campanula exigua Mary L. Bowerman 1930-6-14 330 Contra Costa Summit of Mount Diablo 1159 Comment
  UC1055904  Campanula garganica N. Floy Bracelin 1941-6-1 1347 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  RSA128367  Capsella bursa-pastoris P. H. Raven 1950-3-5 1406 Contra Costa 0.75 mile from place where it meets Orinda - Richmond Road, Bear Creek Road. 107 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
  UC762889  Cardamine californica R. F. Hoover 1938-2-21 2754 Contra Costa Point Richmond Comment
  UCD114186  Cardamine californica Morris Halperin 1929-4-21 s.n. Contra Costa St. Mary's College campus. Comment
  LA204290  Cardamine californica Carl B. Wolf; 1937-3-28 8319 Contra Costa 2 mi. S of Pinole on San Pablo Road 30 Comment
  UC905262  Cardamine californica var. californica J. A. Rattenbury 1949-3-10 128 Contra Costa half mi e Oakland Tunnel; e of Oakland Tunnel 243 Comment
  UC691066  Cardamine oligosperma Mary L. Bowerman 1932-3-6 1100 Contra Costa e fork Sycamore Canyon (near trail, Mount Diablo); Mount Diablo, e fork Sycamore Canyon Comment
  UC2070559  Cardamine oligosperma var. oligosperma Barbara Ertter 2003-4-9 18140 Contra Costa Shell Ridge Open Space on west base of Mount Diablo, Indian Creek below Fossil Hill Trail crossing. Comment
  CDA19118  Cardaria chalepensis R. M. Case 2001-5-1 PDR P 088777 Contra Costa Solano Ave., Concord. 0 Comment
  CDA40567  Cardaria pubescens V. Guise 2014-5-19 PDR# 070 P06223903 Contra Costa Rodeo; northside of Highway 4, 0.25 mile west of Carbon Way. 0 Comment
  CHSC116628  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart; Josephine Guardino 2016-4-19 20794 Contra Costa 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. Undesignated section of Canada de Los Vaqueros Land Grant. 160 Comment
  UC517456  Carduus pycnocephalus subsp. pycnocephalus J. Thomas Howell 1933-5-14 11246 Contra Costa hills e of St. Mary's College Comment
  CAS-BOT-BC281806  Carduus tenuiflorus Mary L. Bowerman 1934-6-9 2547 Contra Costa Mount Diablo. South Road, bend by Diablo Trail sign reading 4.4 miles to summit: Roadside 304 Comment
  UC2028216  Carduus tenuiflorus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16130 Contra Costa West-center Lime Ridge Open Space northwest of Mount Diablo. Comment
  UCD129927  Carduus tenuiflorus Collector Unknown Date Unknown 64 Contra Costa about 6 miles east of Pinole on Franklin Canyon Road. 152 Comment
  CDA33124  Carex barbarae D. G. Kelch, A. G. Murdock 2004-7-9 04 .305-B Contra Costa Carquinez Strait; Alhambra Creek, Martinez, near Muir gravesite, Arroyo del Hambre. Comment
  CDA32069  Carex barbarae D. G. Kelch 2006-3-18 6 .105 Contra Costa 2 km N-NW of Orinda Village. NW of corner of San Pablo Dam Rd & Bear Valley Rd. 0 Comment
  RSA153458  Carex barbarae G. Thomas Robbins 1959-5-16 4008 Contra Costa Just north of Pt. Orient, Potrero Hills, overlooking San Francisco Bay, Richmond. 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
  CAS-BOT-BC20852  Carex globosa John Thomas Howell 1953-3-15 28923 Contra Costa Rock City, Mt. Diablo. 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
  UC2029197  Carex serratodens Barbara Ertter with Michelle Lee et al. 2002-6-29 17964 Contra Costa Lower Curry Creek on east side of Mount Diablo, private property just above Morgan Territory Comment
  UC691959  Carex serratodens Mary L. Bowerman 1933-4-15 1856 Contra Costa canyon s Arroyo del Cerro (hollow in gully near main stream); Mount Diablo Comment
  JEPS105722  Carex serratodens David Gowen 2004-9-13 160 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
  UC593503  Carex subbracteata G. L. Stebbins Jr. 1936-5-9 1555 Contra Costa e side Wildcat Canyon; Berkeley Hills Comment
  UC7991  Carex subbracteata W. H. Brewer 1012 Contra Costa Walnut Creek Comment
  UC1618162  Carex subbracteata Barbara Ertter, Chris Thayer 1993-5-7 11694 Contra Costa Hopkins Spring 1/2 mile SE of Inspiration Point on Wild Canyon Road, East Bay Municipal Utilities District land east of Tilden Park 304 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
  UC2029199  Carex tumulicola Barbara Ertter 2003-2-8 18094 Contra Costa Richmond Field Station (UC-Berkeley) Comment
  JEPS119399  Carex tumulicola J. Greenhouse with A. Doran, D. Kelch, H. Bartosh, J. Game, et al. 2012-3-20 5142 Contra Costa Brooks Island Comment
  OBI13975  Carpenteria californica Neil Havlik 1968-5-19 201 Contra Costa Tilden Botanical Garden, Charles Lee Tilden Regional Park, E of Berkeley Comment
  CDA20549  Carthamus creticus R. Fonseca 2005-6-2 PDR 1327561 Contra Costa San Francisco Bay Area; 1171 Chistie Rd, Martinez. 0 Comment
  JEPS21966  Carthamus tinctorius G. Thomas Robbins with S. Galen Smith 1958-6-2 3850 Contra Costa at junction with U.S. Highway 40 Franklin Canyon Road (State Highway 4) (Hercules (a short distance w of its e boundary)); Hercules, Franklin Canyon Comment
  JEPS73301  Castilleja L. R. Heckard 1973-6-6 3422 Contra Costa ravine behind La Moine Park; Richmond 121 Comment
  JEPS74803  Castilleja L. R. Heckard, T. I. Chuang and R. C. Bacigalupi 1975-5-7 4011 Contra Costa ca 0.5 mi e Pinole (just e of Interstate 80, along main route of Santa Fe RR) Comment
  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
  UC2070591  Castilleja affinis Barbara Ertter with Steve Matson 2003-3-15 18100 Contra Costa Black Diamond Mines Regional Preserve, north slope of Rose Hill. Comment
  JEPS15237  Castilleja affinis subsp. affinis Rimo Bacigalupi with G. Thomas Robbins 1956-5-11 5643 Contra Costa near summit of Hampton Road grade (on the Pinole Creek side, over hill n of Bear Creek and leading to Briones Valley School (which is not in Briones Valley)) 220 Comment
  HSC101960  Castilleja applegatei subsp. martinii Nikolaus Gillen, Michelle Bihler 2014-3-20 12 Contra Costa Mount Diablo State Park. Eagle Peak Trail. 649 Comment
  UC1819048  Castilleja attenuata Barbara Ertter, Lisa Schultheis 1995-4-27 14005 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
  CHSC21620  Castilleja exserta Willis Ball 1974-4-21 425 Contra Costa In area #7. Immediately to the w side of Contra Loma Blvd. ca. 400 yds s of the main boat ramp. Contra Loma Regional Park. 45 Comment
  CDA41325  Castilleja exserta subsp. exserta D. G. Kelch 2005-5-13 5 .239 Contra Costa Carquinez Strait Region; Martinez. South of oil refinery along railroad tracks in fragment of habitat. Comment
  UCSB12530  Castilleja exserta subsp. exserta Grah, Nancy 1962-4-14 Contra Costa 0.9 miles on Tappan Lane north of Tarry Lane;Orinda 243 Comment
  UC2028150  Castilleja foliolosa Barbara Ertter 1998-4-4 15963 Contra Costa Shell Ridge Open Space northwest of Mount Diablo and Indian Valley School. Comment
  SEINET5543151  Castilleja parviflora H. S. Gentry 1931-1 51 Contra Costa Collected near Buckle Point, Mount Diablo. Comment
  JEPS11158  Castilleja rubicundula subsp. lithospermoides R. F. Hoover 1939-4-25 4064 Contra Costa Richmond hills* Richmond hills; Richmond 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
  UC2046339  Casuarina Barbara Ertter with Brad Olson 1994-5-7 12741 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  UCD114675  Caulanthus lasiophyllus P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. Comment
  CAS-BOT-BC48838  Ceanothus cuneatus Mary L. Bowerman 1931-2-28 527 Contra Costa Near top of south road Comment
  POM300662  Ceanothus cuneatus Mary L. Bowerman 1932-5-1 1406 Contra Costa Oyster Ridge, outer steep face E of Alamo Creek Comment
  UCD112079  Ceanothus cuneatus M. Wiesendanger 1926-6-1 1532 Contra Costa 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
  UC692591  Ceanothus cuneatus var. cuneatus Mary L. Bowerman 1932-5-1 1406 Contra Costa Oyster Ridge, outer steep face of Alamo Creek, Mount Diablo Comment
  UC80011  Ceanothus cuneatus var. cuneatus G. W. Dunn 1892-3-12 Contra Costa Mt. Diablo Comment
  SBBG4169  Ceanothus cuneatus var. ramulosus H. and M. Dearing 1940-3-20 4126 Contra Costa Mt Diablo Comment
  UCD166546  Ceanothus oliganthus Dylan O. Burge 2016-2-18 2047 Contra Costa Huckleberry Ridge. 390 Comment
  JEPS42191  Ceanothus oliganthus var. sorediatus W. L. Jepson 1908-4-4 3003 Contra Costa West Branch of San Pablo Creek Berkeley hills Comment
  UC762255  Ceanothus oliganthus var. sorediatus R. F. Hoover 1941-4-12 4843 Contra Costa w branch of San Pablo Creek Comment
  UCD159458  Centaurea calcitrapa D. S. Park; K. Yeo 2010-8-7 212 Contra Costa Mare Island. Along Railroad Rd. Growing next to old railroads w/ Cichorium, parsnip. Shrubby. Road blocked. 8 Comment
  CDA7090  Centaurea calcitrapa T. C. Fuller 1961-9-13 7000 Contra Costa Highway J4, ca. 4 miles southeast of Byron. 0 Comment
  JEPS99540  Centaurea melitensis Mary L. Bowerman 1995-6-4 Contra Costa Mount Diablo, North Gate Rd. Comment
  CAS-BOT-BC277052  Centaurea melitensis Alice Eastwood 1921-4-11 10239 Contra Costa Antioch Comment
  CAS-BOT-BC277053  Centaurea melitensis Joseph Andorfer Ewan 1936-5-3 9506 Contra Costa Wildcat Creek Comment
  JEPS44120  Centaurea melitensis W. L. Jepson 1922-7-9 9735 Contra Costa El Cerrito salt marsh El Cerrito 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
  UC2028266  Centaurium davyi Barbara Ertter 1999-6-12 16714 Contra Costa West Branch Alamo Creek on south flank of Mount Diablo, along unofficial path running from north spur of Black Hawk Ridge Road to south spur off of Knob Cone Point Road (near powerline). Comment
  JEPS78619  Centaurium muehlenbergii Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3288 Contra Costa Browns Island Comment
  CDA6636  Centranthus ruber D. G. Kelch, A. G. Murdock 2004-6-19 4 .282 Contra Costa Carquinez Strait Region; Crockett - Tormey Headlands. Along railroad tracks west of Carquinez Bridge Crockett (Valona). Comment
  UC421693  Centromadia fitchii John Thomas Howell 1929-9-21 4388 Contra Costa 1 mi se Clayton Comment
  UC2029029  Centromadia fitchii Barbara Ertter 2002-8-24 18019 Contra Costa Dunn Creek south of Mount Diablo Mine property on NE base of Mount Diablo. Comment
  CAS-BOT-BC288875  Centromadia parryi subsp. congdonii R. F. Hoover 1966-8-31 9943 Contra Costa Junction of Tassajara and Freitas Rds, E of Danville Comment
  CAS-BOT-BC288882  Centromadia parryi subsp. congdonii H. M. Hall 1916-10-14 10283 Contra Costa Pacheco Comment
  CAS-BOT-BC288883  Centromadia parryi subsp. congdonii John Thomas Howell 1932-10-16 10820 Contra Costa Near San Ramon Comment
  CAS-BOT-BC279181  Centromadia pungens subsp. pungens Walter Knight; Irja Knight; et al 1978-9-5 3224 Contra Costa Browns Island Comment
  CAS-BOT-BC279185  Centromadia pungens subsp. pungens David D. Keck 1933-11-2 2613 Contra Costa 3 mi. S. of Martinez on road to Pacheco Comment
  CAS-BOT-BC279196  Centromadia pungens subsp. pungens J McMurphy 1909-5-20 s.n. Contra Costa Antioch Comment
  UC1238115  Centromadia pungens subsp. pungens A. P. N. 1961-4-6 713 Contra Costa on Byron Road 3 mi s Byron (old roadbed near Southern Pacific Railroad crossing) Comment
  CAS-BOT-BC279202  Centromadia pungens subsp. pungens Volney Rattan 1886-6-15 s.n. Contra Costa Pacheco Valley Comment
  CAS-BOT-BC279203  Centromadia pungens subsp. pungens David D. Keck 1932-7-7 1736 Contra Costa Just east of Nichols Comment
  UC1039525  Cephalanthus occidentalis var. californicus H. L. Mason 1929-9-21 5447 Contra Costa 1 mi from Borden Highway junction with road to Antioch Comment
  UC1594163  Cephalanthus occidentalis var. californicus Jerry Powell 1991-6-11 1607 Contra Costa Antioch National Wildlife Refuge Comment
  JEPS111783  Cerastium glomeratum D. G. Kelch 2003-3-21 03 .72 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 40 Comment
  JEPS51352  Cerastium glomeratum W. L. Jepson 1922-4-16 9600 Contra Costa San Pablo Comment
  RSA0069381  Cerastium glomeratum Katie Gallagher, Nick Jensen 2014-4-26 208 Contra Costa Las Trampas Regional Wilderness. 487 Comment
  JEPS9018  Chamaesyce ocellata subsp. ocellata W. L. Jepson 1901-10-11 13926 Contra Costa Mount Diablo Comment
  JEPS111952  Chamaesyce serpens D. G. Kelch 2004-7-9 04 .301 Contra Costa McEwen Road McEwen marsh. McEwen Road North of Cummings Skyway 130 Comment
  RSA685735  Cheilanthes covillei Mark Morris 1929-03 14910 Contra Costa Mt. Diablo. 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
  JEPS106987  Cheilanthes intertexta J. Greenhouse with Kevin Hintsa 2004-4-5 5086 Contra Costa Mt. Diablo, Fire Interpretive Trail, Devil's Pulpit 1088 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
  CHSC75078  Chenopodium album Roger Thom 1987-5-27 23 Contra Costa 1900 block of Olympic Blvd. (at Newell Ave.) Walnut Creek. 15 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
  UC2027830  Chenopodium californicum Barbara Ertter with Tony Morosco and other CNPS members 2001-5-6 17622 Contra Costa Northwest flank of Mount Diablo, south end of Black Point Trail on tributary of White Canyon. Comment
  JEPS111800  Chenopodium murale D. G. Kelch 2004-7-9 04 .308 Contra Costa Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite 60 Comment
  JEPS61570  Chlorogalum pomeridianum var. pomeridianum Edw. L. Greene 1889-5-23 Contra Costa Byron Springs Comment
  UC692212  Chorizanthe membranacea Mary L. Bowerman 1931-5-7 803 Contra Costa Mount Diablo just below crest s side North Peak Ridge; Mount Diablo, North Peak ridge 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-BC252676  Chorizanthe membranacea Paul F. Covel 1936-5-17 152 Contra Costa Mt. Diablo Trail from summit to north peak Comment
  UC2028983  Chorizanthe membranacea Barbara Ertter 2000-5-14 17015 Contra Costa Donner Basin on north side of Mount Diablo, Falls Trail north of Wild Oat Canyon. 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
  CHSC75054  Cichorium intybus Roger Thom 1987-5-26 16 Contra Costa 1900 block of Geary Rd. Walnut Creek 30 Comment
  UC71900  Cirsium brevistylum W. A. Setchell 1897-3-21 Contra Costa Wild Cat Canon Comment
  CAS-BOT-BC277978  Cirsium cymosum Mary L. Bowerman 1935-5-22 3041 a Contra Costa Mount Diablo. Eagle Point ridge, canyon at north end which heads into saddle west of Twin Peaks 304 Comment
  UC1119189  Cirsium cymosum var. cymosum C. M. Belshaw 1936-5-7 2050 Contra Costa 2 mi n of Danville; Mt. Diablo Quadrangle 243 Comment
  UC691378  Cirsium cymosum var. cymosum Mary L. Bowerman 1935-5-22 3041 a Contra Costa Eagle Point Ridge, canyon at n e of which heads into saddle w of Twin Peaks Mount Diablo 304 Comment
  UC691380  Cirsium cymosum var. cymosum Mary L. Bowerman June 1942 3848 Contra Costa South Road se of Rock City 502 Comment
  UC2070625  Cirsium douglasii var. douglasii Barbara Ertter with D. Gowen, J. Ginochio, M. Park, S. Matson, A. Moore, S. D'Alcamo, J. Greenhouse, K. Kersh and J. Gawthrup 2005-5-8 18564 Contra Costa Long Ridge on west side of Mount Diablo, stringer below Moses Rock Spring on Burma Road. Comment
  CDA33850  Cirsium occidentale D. G. Kelch 2010-5-15 10 .127 Contra Costa Mt. Diablo. Trail from Juniper Camp to Deer Flat. 0 Comment
  JEPS59176  Cirsium occidentale var. californicum W. L. Jepson 1921-5-22 9213 Contra Costa common midway on mountain Mt. Diablo Comment
  SD245260  Cirsium occidentale var. venustum David Keil, Barbara Ertter, et al 2000-6-18 28815 D Contra Costa Mount Diablo State Park. Lower part of Jumper Trail above Laurel Dell picnic area. 914 Comment
  JEPS107121  Clarkia affinis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14224 Contra Costa Mt. Diablo, southeast of Walnut Creek, north of Curry Point 518 Comment
  JEPS78818  Clarkia affinis Edward Lee 1936-5-24 2158 Contra Costa about 2 mi se Curry Canyon; Morgan Territory, Marsh Creek Comment
  SBBG40396  Clarkia amoena W. J. Dress 1951-7-3 3466 Contra Costa near rd a few mi S of Moraga 152 Comment
  JEPS111566  Clarkia biloba subsp. biloba D. G. Kelch 2003-8-13 03 .124 Contra Costa Vaca Canyon Locally common herb to 20 cm on n facing road cuts 165 Comment
  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
  POM153229  Clarkia biloba subsp. biloba C. L. Hitchcock 1928-6-5 15 Contra Costa Between Port Costa and Crockett, 1 mile west of Port Costa. 5 Comment
  UC2029141  Clarkia concinna Barbara Ertter with Alan Prather 2003-6-7 18213 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, Coyote Trail. 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
  UC1952185 Image available Clarkia concinna subsp. concinna R. Raiche 1981-3-1 s.n. Contra Costa North America, U.S.A., California, Contra Costa County: Mt. Diablo. N. Slope of N. peak in talus slopes below the ridge line. Under Quercus spp., Juniperus californica, Cercocarpus betuloides & Pelea baldwinii. Comment
  UC634661  Clarkia concinna subsp. concinna David R. Goddard 1927-5-23 170 Contra Costa San Pablo Creek Canyon Comment
  CAS-BOT-BC172037  Clarkia gracilis subsp. gracilis Mary L. Bowerman 1942-5-24 3840 Contra Costa Jim White Trail to Deer Flat, Mount Diablo 853 Comment
  CAS-BOT-BC163286  Clarkia modesta Mrs. Brandegee s.n. Contra Costa Antioch Comment
  CAS-BOT-BC172557  Clarkia purpurea subsp. purpurea Edw. L. Greene 1889-5-1 32 Contra Costa Near Martinez Comment
  CAS-BOT-BC163665  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1931-5-16 855 Contra Costa Mount Diablo. Summit Comment
  CAS-BOT-BC163671  Clarkia purpurea subsp. quadrivulnera Barrett Anderson 1987-4-30 3500 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD 125 Comment
  UC692442  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1931-5-2 799 Contra Costa foot Eagle Point ridge; Mount Diablo 228 Comment
  UC692489  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1931-5-16 859 Contra Costa w flank Ransom Point Ridge (Summit); Mount Diablo 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
  POM301855  Clarkia purpurea subsp. quadrivulnera Mary L. Bowerman 1933-5-18 2123 Contra Costa Mount Diablo: Blackberry Spring Comment
  RSA0059918  Clarkia purpurea subsp. quadrivulnera Glenn A. Gorelick 1967-5-20 s.n. Contra Costa Russelman Park, Mt. Diablo State Park Comment
  UC2028319  Clarkia purpurea subsp. quadrivulnera Barbara Ertter, Susan D'Alcamo 1998-6-12 16158 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. Comment
  CAS-BOT-BC165036  Clarkia rubicunda Rimo Bacigalupi s.n. Contra Costa Head of Bear Creek Valley, northern Contra Costa Co. Comment
  UC692545  Claytonia exigua subsp. exigua Mary L. Bowerman 1932-3-12 1113 Contra Costa Alamo Canyon (50 ft above stream) Alamo Canyon; Mount Diablo 365 Comment
  CAS-BOT-BC439169  Claytonia exigua subsp. exigua W. H. Brewer 1862-5-12 1082 Contra Costa Monte [Mount] Diablo Comment
  POM164051  Claytonia exigua subsp. exigua C. F. Baker 1903-4-28 4624 Contra Costa Mitchell s canon, Mt. Diablo. Comment
  UC692552  Claytonia exigua subsp. glauca Mary L. Bowerman 1933-5-4 1998 Contra Costa e end Fossil Ridge; Mount Diablo Comment
  CAS-BOT-BC439436  Claytonia parviflora subsp. parviflora Mary L. Bowerman 1930-6-14 331 Contra Costa Mount Diablo. Meridian Peak Summit Comment
  CAS-BOT-BC439440  Claytonia parviflora subsp. parviflora John Thomas Howell 1933-5-14 11252 Contra Costa Hills east of St. Mary's College Comment
  UC1618110  Claytonia perfoliata Donald G. Nelson 1937-3-30 466 Contra Costa along Marsh Creek Rd. between Claytonville and Byron Comment
  CAS-BOT-BC440076  Claytonia perfoliata subsp. perfoliata John Thomas Howell 1933-5-14 11273 Contra Costa Hills east of St. Mary's College Comment
  CAS-BOT-BC443683  Claytonia perfoliata subsp. perfoliata Walter Knight 1965-3-1 904 Contra Costa Antioch dunes Comment
  UC1057451  Claytonia perfoliata subsp. perfoliata G. Thomas Robbins 1937-4-25 148 Contra Costa 2 mi e Alamo Comment
  UC1050592  Clematis cirrhosa N. Floy Bracelin 1942-2-22 1942 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  RSA135362  Clematis lasiantha Volney Rattan 1883-04 s.n. Contra Costa Martinez. Comment
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Jul 18 2011
  UC136298  Clematis lasiantha C. F. Baker 1903-4-28 2946 Contra Costa Mt. Diablo, Mitchells Canyon Comment
  UC1050307 Image available Clerodendrum bungei N. Floy Bracelin 1941-8-24 1592 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC41790  Collinsia bartsiifolia var. bartsiifolia Chestnut and Drew 1889-4-16 Contra Costa Concord Comment
  UC691582  Collinsia heterophylla Mary L. Bowerman 1930-6-5 245 Contra Costa West Road 5.8 mi from entrance, Mount Diablo Mount Diablo; , West Road 457 Comment
  UC26589  Collinsia heterophylla Ivar Tiderstrom vi, 1895 Contra Costa Edwards Canyon, near Crockett Comment
  JEPS108351  Collinsia sparsiflora David Gowen 2005-3-31 220 Contra Costa Sibley Regional Preserve. East facing slope just east of Park boundary near dirt road that heads southeast. Comment
  UC1607637  Collinsia sparsiflora var. collina Barbara Ertter with Michelle Seidl 1992-3-14 10919 Contra Costa Morgan Territory Regional Preserve e of Mount Diablo; Morgan Territory Regional Preserve Comment
  UC1795634  Collinsia sparsiflora var. collina Barbara Ertter, Brad Olson 1992-4-13 10951 Contra Costa Mount Diablo State Park, Knobcone Point Road E of Curry Point 518 Comment
  RSA138305  Collinsia tinctoria Volney Rattan 1886-06 s.n. Contra Costa Mount Diablo Comment
  JEPS79511  Collomia diversifolia Edward Lee 1978-5-13 Contra Costa Meridian Ridge Mt. Diablo Comment
  UC141630  Convolvulus simulans Katharine Brandegee 1907-6-16 Contra Costa fields bet. Antioch and Marsh Creek Comment
  UC1594168  Conyza bilbaoana Jerry Powell 1616 Contra Costa Antioch National Wildlife Refuge Contra Costa Comment
  JEPS99954  Conyza bonariensis A. Langston 2003-9-16 AL 89 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS85587  Cordylanthus nidularius T. I. Chuang with L. R. Heckard and R. C. Bacigalupi 1968-6-27 6436 Contra Costa 3/4 mi NE of Deer Flat (NE flank of Bald Ridge); Mt. Diablo 670 Comment
  NY68297  Cordylanthus nidularius J. T. Howell 1942-7-19 17044 Contra Costa Near of Deer Flat, Mt. Diablo. Comment
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Jul 18 2011
  UC691741  Cordylanthus nidularius J. T. Howell 1942-7-19 17044 Contra Costa NE (?) of Deer Flat, Mt. Diablo, Contra Costa Co. Comment
  CAS-BOT-BC287145  Coreopsis stillmanii Brandegee No date on label s.n. Contra Costa Mt Diablo Comment
  CAS-BOT-BC209590  Cornus sericea Ira L. Wiggins 1930-4-18 4593 Contra Costa Levee, east end of Jersey Island Comment
  LA40446  Cornus sericea subsp. sericea J. A. Ewan; 1936-7-5 9720 Contra Costa Reservoir road, Wildcat Creek Comment
  UCD37373  Cortaderia selloana Beecher Crampton 1959-9-3 5456 Contra Costa Contra Costa County, 2 miles southeast of El Sobrante, along San Pablo Dam Road. Comment
  CAS-BOT-BC169516  Corylus cornuta subsp. californica John Thomas Howell 1925-9-19 1456 Contra Costa Moraga Ridge, Oakland Hills Comment
  CDA39608  Corylus cornuta var. californica D. G. Kelch 2003-8-13 3 .126 Contra Costa Carquinez Strait; Vaca Canyon. 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
  CDA21581  Cotoneaster pannosus D. G. Kelch, Michael Park 2008-9-1 8 .299 Contra Costa Carquinez Strait; Lonetree Point. Rodeo Shoreline Park. Rodeo. Comment
  CHSC116617  Cotula australis Lowell Ahart; Josephine Guardino 2016-4-19 20799 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. In the middle of the dirt road, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  UC1795664  Cotula australis Barbara Ertter, Mary Bowerman et al. 1995-5-7 14055 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, road behind houses traversing north facing slope, mixed forest with much undergrowth. Comment
  SD241743  Cotula australis Barbara Ertter, Mary Bowerman et al. 1995-5-7 14055 Contra Costa Three-Sorings Trail on northeast side of Mt. Diablo southeast of Clayton, road behind houses traversing north facing slope. Comment
  JEPS111677  Cotula coronopifolia D. G. Kelch 2003-8-13 03 .114 Contra Costa Martinez Marsh 0 Comment
  CAS-BOT-BC427577  Crassula aquatica Peter H. Raven; H. L. Mason; R. Ornduff; et al 1957-4-4 10577 Contra Costa 3.0 miles s. of Byron Comment
  UC692662  Crassula aquatica Mary L. Bowerman 1931-4-4 663 Contra Costa pool w. of Turtle Rock; Mt. Diablo Comment
  JEPS111820  Crassula connata A. G. Murdock 2004-2-12 209 Contra Costa Martinez - Franklin Hills 95 Comment
  RSA0068476  Crassula connata Katie Gallagher, Nick Jensen 2014-4-26 202 Contra Costa Las Trampas Regional Wilderness. 487 Comment
  UC2028142  Crassula tillaea Barbara Ertter 1998-4-4 15973 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Quarry Hill. Comment
  JEPS22096  Cressa truxillensis G. Thomas Robbins 1958-7-19 3907 Contra Costa ca. 3/4 mi. s. Point San Pablo (Potrero San Pablo, Richmond); San Francisco Bay Comment
  JEPS78617  Cressa truxillensis Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3289 Contra Costa Brown Island, Sandy Knoll Comment
  UC1607510  Cressa truxillensis Barbara Ertter with CNPS members 1992-1-19 10895 Contra Costa n.w. corner Concord Naval Weapons Station (Hastings Slough); Hastings Slough Comment
  RSA480683  Croton californicus E. E. Stanford 1930-5-30 1533 Contra Costa Near Knightsen. Comment
  UCD141957  Croton californicus Peter Rubtzoff 1954-9-14 1755 Contra Costa Along lower San Joaquin River, East of Antioch. Comment
  OBI22928  Croton setiger Janet Harford 1971-11-6 2 Contra Costa Mount Diablo, S side 610 Comment
  JEPS102901  Crypsis schoenoides Barbara Ertter, Chris Thayer 1996-10-25 15360 Contra Costa Little Pine Creek, Diablo Foothills Regional Park Mount Diablo Comment
  SEINET4343820 Image available Crypsis vaginiflora Unknown 1989-9-30 8865 Contra Costa Tilden Regional Park E of El Cerrito, East Bay Skyline Nat'l Recreation Trail (= Nimitz Way), small dried pond ca 1 1/4 mi NW of Inspiration Point. Comment
  CDA31171  Cryptantha clevelandii var. clevelandii D. G. Kelch, Troy McGregor; Ed Biffin 2010-6-1 10 .224 Contra Costa Mt. Diablo. Knobcone Point Rd. Comment
  UC79420  Cryptantha micromeres Katharine Brandegee May 1889 Contra Costa Antioch Comment
  UC691340  Cryptantha microstachys Mary L. Bowerman 1933-5-25 2183 Contra Costa w end Oyster Ridge (steep n-facing slope, s-face); Mount Diablo 411 Comment
  UC691358  Cryptantha muricata Mary L. Bowerman 1931-5-7 808 Contra Costa North Peak Mount Diablo Comment
  CHSC114262  Cucurbita foetidissima D. G. Kelch 2008-9-10 08 .297 Contra Costa North of Waterbird Park along RR tracks. E of Martinez. 2 Comment
  CDA33492  Cuscuta japonica Yost 2008-7-17 PDR# 1454020 Contra Costa Antioch; 5124 Paddock Ct. 0 Comment
  JEPS25276  Cuscuta salina var. major G. Thomas Robbins 1959-9-13 4163 Contra Costa just e Hercules (ne edge of San Pablo Bay); San Pablo Bay Comment
  UC23280  Cuscuta subinclusa Bolander 1863-1 2436 Contra Costa Moraga Valley Comment
  CDA15228  Cynara cardunculus G. F. Hrusa, D. Crowe 1998-5-8 14357 Contra Costa Sacramento Delta; Dow Chemical at Pittsburg. Comment
  CDA4533  Cynara cardunculus T. C. Fuller 1957-10-2 399 -57 Contra Costa Antioch. 0 Comment
  CAS-BOT-BC299740  Cynara cardunculus D. E. Breedlove 1969-10-18 16709 Contra Costa Along the roadbank on Deer Hill Road near the junction with Happy Valley Road, Lafayette Comment
  UC2013065  Cynara cardunculus Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14927 Contra Costa Northwest base of Mount Diablo access to Foothills Regional Park from North Gate road along Little Pine Creek. Comment
  CAS-BOT-BC114618  Cyperus eragrostis Walter Knight; Wayne Roderick; Stephen W. Edwards; B. Doyle 1978-9-19 3264 Contra Costa Browns Island, South Landing. Comment
  SEINET10551690  Cyperus eragrostis Thomas B. Croat 1966-6-18 Croat 1992 Contra Costa Frank's Tract, Bethel Island; 7 mi W of Oakley, lakeside and marsh habitats. Comment
  UC1819043  Cyperus eragrostis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14235 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  CAS-BOT-BC114071  Cyperus squarrosus Walter Knight; Frank Almeda; Joanne Dean; B. Doyle 1978-10-11 3324 Contra Costa Browns Island, Botany Cove. Comment
  CDA35758  Cytisus striatus V. Guise 2011-5-13 PDR# 1641027 Contra Costa Richmond; Wildcat Canyon Regional Park, 2755 McBryde Ave. 0 Comment
  JEPS112311  Datura wrightii Andrew G. Murdock 2004-5-28 308 Contra Costa Hercules - Carbon, along Highway 4 Comment
  JEPS100136  Daucus pusillus G. Smick 2003-5-13 GAS 188 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC692370  Daucus pusillus Mary L. Bowerman 1932-4-27 1404 Contra Costa canyon w. of Riggs Canyon (fork of canyon toward n. end, Oyster Ridge); Mt. Diablo, Oyster Ridge 350 Comment
  CAS-BOT-BC287365  Deinandra Walter Knight 1977-7-24 s.n. Contra Costa Black Diamond Mines Regional Preserve. Nortonville Ridge 304 Comment
  CAS-BOT-BC287375  Deinandra corymbosa H. M. Hall 1914-8-23 9862 Contra Costa Giant 22 Comment
  CAS-BOT-BC294014  Deinandra kelloggii Dr. A. Kellogg 1870-4-22 s.n. Contra Costa Antioch Comment
  JEPS12629  Deinandra kelloggii M. K. Curran May 1886 Contra Costa near Antioch Comment
  UC480997  Deinandra kelloggii Mary K. Curran May 1886 Contra Costa near Antioch Comment
  UC990569  Deinandra kelloggii James I. McMurphy 1909-5-21 Contra Costa Antioch Comment
  CAS-BOT-BC294020  Deinandra kelloggii John Thomas Howell 1930-9-28 5505 Contra Costa 3.2 miles from Byron on Marsh Creek Road Comment
  CAS-BOT-BC291808  Deinandra lobbii H. M. Hall 1930-6-18 12792 Contra Costa Somerville [Somersville], hills south of Pittsburg Comment
  CAS-BOT-BC291810  Deinandra lobbii David D. Keck 1933-11-2 2615 Contra Costa 1 mi. E. of Nichols, N. Contra Costa County Comment
  JEPS102902  Delairea odorata Barbara Ertter, Chris Thayer 1996-10-25 15358 Contra Costa Little Pine Creek, Diablo Foothills Regional Park Mount Diablo Comment
  JEPS20340  Delphinium californicum W. L. Jepson 1918-6-3 7587 Contra Costa n slopes of mt Mt. Diablo, Donner Canyon (by dead streamlet in bottom of canyon) 685 Comment
  JEPS105716  Delphinium hansenii subsp. hansenii David Gowen 2004-5-1 55 Contra Costa Black Diamond Mines Regional Preserve. North-facing slopes above Lower Oil Canyon road. Comment
  UC692144  Delphinium hesperium Mary L. Bowerman 1931-5-2 786 Contra Costa foot Eagle Point Ridge; Mount Diablo Comment
  UCD84955  Delphinium hesperium Chuck Hughes 2010-5-19 227 Contra Costa About 0.5 mile south of Vasco Road. 184 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
  UC1126003  Delphinium hesperium subsp. pallescens C. M. Belshaw 1936-5-15 2117 Contra Costa 2 mi ENE of North Peak; Mount Diablo 228 Comment
  POM203038  Delphinium hesperium subsp. pallescens J. T. Howell 1934-4-8 11824 Contra Costa South of Antioch Comment
  UC765793  Delphinium nudicaule R. F. Hoover 1938-5-4 3340 Contra Costa Marsh Creek Canyon Comment
  UC9202  Delphinium nudicaule W. H. Brewer 1862-5-7 1053 Contra Costa n slope Monte Diablo Comment
  UC536012  Delphinium patens Laurence S. Jones 1934-4-8 58 Contra Costa w slope of mt approximately 3 mi surface distance from peak; Mt. Diablo 609 Comment
  CAS-BOT-BC116454  Delphinium patens subsp. patens H. L. Mason 1928-4-29 4440 Contra Costa Sycamore Canyon, south slope of Mount Diablo Comment
  CAS-BOT-BC116457  Delphinium patens subsp. patens Alice Eastwood 1915-5-30 4497 Contra Costa Mt. Diablo Comment
  UC69614  Delphinium patens subsp. patens H. P. Chandler 1900-3-23 Contra Costa Fish Ranch Road Region of Mount Diablo Comment
  JEPS65179  Delphinium recurvatum L. R. Heckard 1971-4-15 2488 Contra Costa railroad embankment at intersection of Holey Rd; s of Byron Comment
  RSA624911  Delphinium recurvatum John A. Churchill 1974-4-15 s.n. Contra Costa Between Route K4 and railroad at Holey Road Comment
  UC765796  Delphinium recurvatum R. F. Hoover 1938-3-25 2900 Contra Costa Byron Hot Springs Comment
  LA207616  Delphinium recurvatum Carl Epling; 1945-3-23 542 Contra Costa 5 mi. W of Hwy. 120 on Byron Hot Springs rd Comment
  UC188656  Delphinium variegatum subsp. variegatum Edw. L. Greene 1899-3-23 Contra Costa Byron Comment
  UCSB25081  Dendromecon rigida Rieser, D. 1966-4-2 Contra Costa New Bear Creek Road, 2 mi. north of Old Dam Rd., Orinda 304 Comment
  CAS-BOT-BC192544  Deschampsia cespitosa subsp. holciformis Walter Knight; Joanne Dean 1978-8-14 3151 Contra Costa Browns Island Comment
  CDA31667  Deschampsia danthonioides D. G. Kelch, A. G. Murdock 2005-3-25 05 .-095 Contra Costa Carquinez Strait Region; Fernandez Ranch. West of Christie Road, south of I-4 (behind golf course) and north of Pinole Peak. Comment
  UC33546  Dicentra chrysantha V. K. Chesnut before August, 1901 Contra Costa Mt. Diablo Comment
  POM272496  Dicentra chrysantha L. R. Abrams 1921-5-25 8007 Contra Costa Halfway up road, Mt. Diablo Comment
  UC407076  Dicentra chrysantha L. R. Abrams 1921-5-25 8007 Contra Costa halfway-up road Mt. Diablo Comment
  SEINET3559560 Image available Dichelostemma capitatum Lewis S. Rose 1932-3-15 3284 Contra Costa Byron. Comment
  UC30118  Dichelostemma capitatum W. C. Blasdale 1896-2-28 Contra Costa Clayton Comment
  UC765943  Dichelostemma capitatum R. F. Hoover 1938-2-21 2756 Contra Costa Point Richmond Comment
  UCD102375  Dichelostemma capitatum Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. Devils Elbow-Devils Pulpit. 900 Comment
  CAS-BOT-BC500089  Dichelostemma capitatum R. F. Hoover 1938-2-21 2756 Contra Costa Point Richmond Comment
  UCD137497  Dipsacus fullonum P. B. Kennedy 1917-2-8 s.n. Contra Costa Craigmont. Comment
  CAS-BOT-BC121841  Dirca occidentalis Howard E. McMinn 1925-1-1 s.n. Contra Costa Head of San Leandro Creek Comment
  CAS-BOT-BC121845  Dirca occidentalis P. H. Raven 1956-4-8 8986 Contra Costa About 0.5 miles NE of Grizzly Peak 396 Comment
  CDA37269  Dirca occidentalis D. G. Kelch 2010-1-17 10 .31-B Contra Costa Carquinez Strait Region; Upper North Fork of Rodeo Creek, immediately west of Cummings Skyway. Comment
  JEPS111909  Dirca occidentalis Dean G. Kelch and Andrew G. Murdock 2003-3-2 DGK 03 .038.C. Contra Costa Crockett - Edwards Canyon. At top of Crockett Blvd. East of Cummings Skyway. Comment
  RSA40099  Dirca occidentalis L. S. Rose 1948-3-9 s.n. Contra Costa Head of Wildcat Creek, Berkeley Hills 457 Comment
  SBBG4896  Dirca occidentalis H. and M. Dearing 1940-3-20 4122 Contra Costa Berkeley hills in Tilden Park, Berkeley Comment
  UC1176933  Dirca occidentalis Peter H. Raven 1950-2-19 1349 Contra Costa e side ridge at headwaters; Redwood Canyon 365 Comment
  UC552357  Dirca occidentalis Arthur Cobbledick 1936-3-23 Contra Costa Wildcat Canyon Comment
  UCR143109  Dirca occidentalis L. S. Rose 1948-3-9 48011 Contra Costa San Francisco Bay Region, head of Wildcat Canyon, Berkeley hills 457 Comment
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Feb 14 2006
  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
  SEINET6957400  Dirca occidentalis Lorin I. Nevling 1996-2-16 345 Contra Costa Redwood Regional Park. Moon Gate Trail, right branch about 200 yards from gate. Gate is across from 9383 Skyline Boulevard. "Western Leatherwood." Comment
  UCSB26563  Dirca occidentalis Havlik, Neil 1969-3-25 Contra Costa Junction of Grizzly Peak Blvd. and South Park Drive, at the southern end of Tilden Regional Park 487 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
  UC792333  Disporum hookeri J. A. Rattenbury 1948-3-8 96 Contra Costa on s side of road nr creek 1/2 mi e of Oakland Tunnel 213 Comment
  UC792336  Disporum hookeri J. A. Rattenbury 1948-4-13 111 Contra Costa on s side of highway above creek 1/2 mi e of Oakland Tunnel 213 Comment
  POM300632  Disporum hookeri var. hookeri Mary L. Bowerman 1931-3-22 606 Contra Costa Alamo Canyon, east fork. Comment
  RSA0028902  Distichlis spicata Barbara Ertter, Dan Norris 1999-11-14 16851 Contra Costa Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite. Comment
  JEPS12755  Distichlis stricta Rimo Bacigalupi with G. T. Robbins 1955-5-4 4971 Contra Costa on Ygnacio Valley-Clayton Rd. 1.5 mi e Walnut Creek (margins of sulphur spring) 60 Comment
  CHSC99232  Dittrichia graveolens John Dittes 2006-10-26 1412 Contra Costa San Joaquin Valley (foothills near nw edge); ca. 2.0 air miles south of Marsh Creek Gauging Station, 1.6 air miles south of Marsh Creek Reservoir Gauging Station, 1.6 air miles southwest of Intersection of Camino Diablo and Vasco Road; Contra Costa Water District's Los Vaqueros Watershed Mitigation Project Area. 67 Comment
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Aug 22 2009
  UCR198215  Dittrichia graveolens Dean Kelch, A. G. Murdock 2005-11-3 05 .489 Contra Costa Carquinez Strait, entrance to Mt. Wanda 37 Comment
  UCD131226  Dittrichia graveolens Tina Carlsen; R. E. Preston 1996-10-9 s.n. Contra Costa on east side of Greenville road, around 0.5 mile south of I-580. 182 Comment
  UC673358  Dodecatheon clevelandii subsp. patulum Herbert L. Mason 1925-2-28 1260 Contra Costa 1/2 mi e Rodeo; e of Rodeo Comment
  UC766267  Dodecatheon clevelandii subsp. patulum R. F. Hoover 1938-2-21 2749 Contra Costa Byron Hot Springs Comment
  JEPS9520  Dodecatheon hendersonii W. L. Jepson 1923-3-11 9848 Contra Costa Mt. Diablo 396 Comment
  JEPS99973  Dodecatheon hendersonii S. O'Neil 2003-3-11 SEO 7 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1123275  Dodecatheon hendersonii R. C. Wilson 1935-2-27 114 Contra Costa Somersville Mt. Diablo Quad. Comment
  RSA461371  Dodecatheon hendersonii J. T. Howell 1931-3-10 5756 Contra Costa East side of Mt. Diablo 7 miles from Clayton on Livermore road. Comment
  UC1046584  Dodecatheon hendersonii Alex D. Hawkes and R. Bacigalupi 1951-4-22 4777 Contra Costa State Rd. #4 near Mt. Diablo (along Marsh Creek); , near Mt. Diablo Comment
  UCSB24739  Dodecatheon hendersonii Rieser, R. 1966-4-4 Contra Costa On Tarry Lane, 8 miles from intersection of Sleepy Hollow Lane, Orinda. 152 Comment
  UC1050373  Dolichandra unguis-cati N. Floy Bracelin 1942-7-4 1384 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  RSA436115  Downingia bacigalupii Thekla Mohr 1917-06 3163 Contra Costa Mt. Diablo. Comment
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Jan 8 2013
  JEPS22728  Downingia insignis Rimo Bacigalupi with Drs. L. Constance and R. Alava 1958-6-6 6366 Contra Costa 3 mi s Byron (between railroad tracks and the highway to Tracy) Comment
  UC2043172  Downingia insignis Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8116 Contra Costa SE Contra Costa Co., Alkali sink W and adjacent to Clifton Cout Forebay, ca 15 air miles SW of Stockton. Comment
  RSA97189  Downingia insignis J. T. Howell 1953-4-26 28935 Contra Costa Between Byron and Byron Hot Springs. Comment
  RSA721284  Downingia pulchella Barbara Ertter, Tom Delendick 1996-5-2 14607 Contra Costa Spring town wetlands, N of Livermore, along closed section of Hartford Rd. Comment
  JEPS112089  Drymocallis glandulosa var. glandulosa D. G. Kelch 2004-5-2 04 .170 Contra Costa Crockett - Edwards Canyon 125 Comment
  CAS-BOT-BC70863  Dryopteris arguta D. E. Breedlove 1970-4-18 17443 Contra Costa north edge of Lafayette above Laurel Drive 243 Comment
  SD70421  Dudleya abramsii subsp. setchellii W. L. Jepson 1918-6-5 7604 Contra Costa Mt. Diablo, on north peak. 1064 Comment
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Feb 4 2013
  UC1357009  Dudleya farinosa C. H. Uhl 1954-6-1 360 Contra Costa Richmond Point Comment
  UC2028504  Echinochloa colona Barbara Ertter with Mary Bowerman, Lisa Schultheis 1998-8-21 16403 Contra Costa North Gate Road on west side of Mount Diablo, 0.7 miles below Diablo Ranch Comment
  UC2028441  Echinochloa crus-galli Barbara Ertter with Chris Thayer 1996-10-25 15364 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  UC2028446  Echinochloa crus-galli Barbara Ertter with Chris Thayer 1996-10-25 15378 Contra Costa West side of Mount Diablo, North Gate Road 3 road miles below junction, near Mineral Spring Comment
  CAS-BOT-BC197106  Echinochloa crus-galli R. E. Frenkel 1963-8-23 274 Contra Costa On the lot in front of Market Plaza Center on Highway 21, Alamo 79 Comment
  CDA2007  Echinochloa crus-galli var. crus-galli D. G. Kelch, A. G. Murdock 2003-8-13 3 .121 Contra Costa Carquinez Strait Region; Martinez Marsh Comment
  SEINET3407559 Image available Echinocystis fabacea Lewis S. Rose 1933-3-10 33010 Contra Costa Marsh Creek Comment
  CAS-BOT-BC197293  Ehrharta erecta Catherine Best 1990-6-3 s.n. Contra Costa On Ralston Ave. in the hills above Richmond Comment
  UC1606336  Elatine californica Barbara Ertter, Brad Olson 1991-9-28 10829 Contra Costa betw Orinda and El Sobrante San Pablo Reservoir Comment
  CDA38938  Eleocharis macrostachya D. G. Kelch 2005-3-24 5 .062 Contra Costa Carquinez Strait Region; Southern Point Pinole. Comment
  CAS-BOT-BC112794  Eleocharis macrostachya Barrett Anderson 1987-4-29 3484 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD. 125 Comment
  CAS-BOT-BC112797  Eleocharis macrostachya Walter Knight 1978-8-19 3233 Contra Costa Upper Sindecich Lagoon. Briones Regional Park. 335 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
  UC1818864  Eleocharis macrostachya Barbara Ertter, Kristin Ertter 1995-7-11 14471 Contra Costa Sulfur Spring on Pine Cr, Diblo Foothill Regional Park, marshy wet ground. 121 Comment
  POM357109  Elymus X gouldii Glenn A. Gorelick 1967-5-13 s.n. Contra Costa Point Richmond Comment
  RSA108326  Elymus X gouldii Frank W. Gould 1941-5-8 1291 Contra Costa near Bay at Winehaven (near r Richmond); Altitude near sea level 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
  CAS-BOT-BC203432  Elymus glaucus subsp. glaucus Mary L. Bowerman 1935-5-16 3009 Contra Costa Mount Diablo. Behind Gabriel-Hinks' (east side of North Peak) 289 Comment
  CAS-BOT-BC203433  Elymus glaucus subsp. glaucus Mary L. Bowerman 1935-5-3 2964 Contra Costa Mount Diablo. Sloan Road 487 Comment
  CAS-BOT-BC204317  Elymus trachycaulus subsp. trachycaulus Mary L. Bowerman 1935-5-18 3030 Contra Costa Mount Diablo. Meridian Peak north of the summit parking area 1066 Comment
  UC1795674  Elymus trachycaulus subsp. trachycaulus Barbara Ertter, Holly Forbes 1996-2-11 14550 Contra Costa North side Mount Diablo; North Peak trail on east side on main peak, steep slope, openings among scrub oak, umbellularia. 1005 Comment
  JEPS108314  Emmenanthe penduliflora David Gowen 2005-5-24 389 Contra Costa Mt. Diablo. Near summit of knoll west of Mt. Zion. Comment
  JEPS1582  Emmenanthe penduliflora W. L. Jepson 1921-5-22 9205 Contra Costa .66 way to summit Mt. Diablo Comment
  UCD150882  Epilobium brachycarpum James A. Neilson Jr. 1972-11-2 3605 Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 1 Comment
  UC692454  Epilobium canum subsp. canum Mary L. Bowerman 1930-8-31 442 Contra Costa near Garden-of-the-Gods; Mount Diablo, Rock City Ridge 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
  UC2028971  Epilobium ciliatum subsp. ciliatum Barbara Ertter 2000-7-16 17393 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  UCD105799  Epilobium ciliatum subsp. ciliatum Terri Williamson 1990-5-22 72 Contra Costa 212 Poshard St. Pleasant Hill. 12 Comment
  UC84478  Epilobium cleistogamum Katharine Curran Jun 1884 Contra Costa Antioch Comment
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Mar 27 2016
  UC692449  Epilobium densiflorum Mary L. Bowerman 1930-6-28 390 Contra Costa Lower Silver Spring Mount Diablo (marshy area) Comment
  UC2028093  Epilobium densiflorum Barbara Ertter, Chris Thayer 1996-10-25 15381 Contra Costa West side of Mount Diablo, North Gate Road 3 roadmiles below Junction, roadside drainage near Mineral Spring. Comment
  UC4498  Epipactis gigantea F. T. Bioletti 1894-5-13 Contra Costa Mt. Diablo Comment
  CDA31168  Epipactis helleborine D. G. Kelch 2008-9-2 8 .305 Contra Costa Carquinez Strait.; Pinole Valley Park. Comment
  CAS-BOT-BC57259  Equisetum laevigatum Mary L. Bowerman 1931-5-16 864 Contra Costa Lower Silver Spring Comment
  SEINET11614121  Equisetum telmateia subsp. braunii W. Knight, Knight, I. 1983-1 4771 Contra Costa Berkeley, Tilden Regional Park, botanic garden 305 Comment
  CDA31759  Eragrostis cilianensis Deviney 2007-8-2 PDR# 1455080 Contra Costa Brentwood (Knightsen); orchard on Sellers Ave. N of Delta Rd. Comment
  CDA2083  Eragrostis curvula H. R. VanBrocklin 1961-4-12 Contra Costa North side Marsh Creek Road, 1 mile east of Clayton. 0 Comment
  UCD63093  Eragrostis curvula Beecher Crampton 1965-9-29 7526 Contra Costa 5 miles south of Brentwood Vasco Road and Camino Vaqueros. Comment
  UCD64352  Eragrostis pectinacea var. pectinacea Beecher Crampton 1965-9-29 7529 Contra Costa 2 miles north of Brentwood. Comment
  UC1784081  Eriastrum ertterae Barbara Ertter with Tony Morosco 1998-10-18 16441 Contra Costa Lime Ridge Open Space, in saddle SE of microwave towers on summit Comment
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Oct 13 2013
  UC691864  Ericameria arborescens Mary L. Bowerman 1933-9-9 2438 Contra Costa ridge above Frog Pond; Mt. Diablo Comment
  UC2012979  Ericameria arborescens Barbara Ertter with Brad Olson, Dianne Hake, Seth Adams, et. al. 1994-9-11 13091 Contra Costa Chaparral Sprs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton open oak woodland. Comment
  CAS-BOT-BC287525  Ericameria linearifolia Kellogg No date on label s.n. Contra Costa Antioch Comment
  CAS-BOT-BC287534  Ericameria linearifolia L. R. Abrams 1921-5-25 8006 Contra Costa Mt Diablo, middle altitudes Comment
  JEPS117962  Ericameria linearifolia Holly Forbes and Barbara Keller 2009-5-29 Contra Costa Mount Diablo State Park, along deer Flat Road, about 0.1 mi beyond Juniper Camp. Comment
  POM359376  Ericameria linearifolia H. de Forest 1930-3-28 s.n. Contra Costa Mt. Diablo Comment
  RSA102866  Ericameria linearifolia H. N. Bolander 1866-1 6141 Contra Costa Monte [Mount] Diablo Comment
  UC36556  Ericameria linearifolia Harley P. Chandler 1901-4-5 971 Contra Costa Mt. Diablo Comment
  UC86674  Ericameria linearifolia unknown 1889-5-1 Contra Costa Antioch Comment
  UCD102386  Ericameria linearifolia Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. North Peak Road to North Peak. 920 Comment
  UCD131397  Ericameria linearifolia R. A. Pendleton 1934-3-20 s.n. Contra Costa Mount Diablo. Comment
  CDA42377  Erigeron foliosus var. franciscensis D. G. Kelch 2012-6-1 12 .095 Contra Costa Carquinez Strait Region; 1 km east of Port Costa in the vicinity of the old brick factory. Comment
  UC31470  Erigeron foliosus var. franciscensis Edw. L. Greene 1892-6-20 Contra Costa Walnut Creek Comment
  UC31471  Erigeron foliosus var. franciscensis Edw. L. Greene 1892-6-20 Contra Costa Mount Diablo Comment
  POM53857  Erigeron foliosus var. franciscensis L. R. Abrams 1916-6-30 5701 Contra Costa Mt. Diablo near lake Comment
  UC2070521  Erigeron foliosus var. franciscensis Barbara Ertter with Delia Taylor 2003-6-22 18228 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, N-facing slope along Arata Overlook Trail NE of park headquarters. Comment
  SBBG44960  Erigeron petrophilus J. A. Ewan 1936-7-5 9735 Contra Costa Wildcat Crk Comment
  RSA22313  Erigeron petrophilus Joseph A. Ewan 1936-7-5 9735 Contra Costa Wildcat Creek. Comment
  UC691787  Erigeron petrophilus var. petrophilus Mary L. Bowerman 1931-8-29 1034 Contra Costa summit Meridian Peak; Mount Diablo Comment
  UC691786  Erigeron petrophilus var. petrophilus Mary L. Bowerman 1930-10-19 489 Contra Costa at Garden-of-the-Gods; Mount Diablo, Fossil (Rock City) Ridge Comment
  UC31514  Erigeron philadelphicus var. philadelphicus J. Burtt Davy 1895-4-13 1007 Contra Costa near Lafayette 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
  UC1779709  Eriobotrya japonica Rudolf Schmid 1997-5-21 1997 -11 Contra Costa Hillside Natural Area, El Cerrito; some distance NW of King Ct. entrance, near W side of road, in drainage gully north of the Salix-Corylus grove. 126 Comment
  RSA401488C  Eriodictyon californicum Cora Mae Life 1923-7-4 95 Contra Costa Mt Diablo. Comment
  UC2029056  Eriogonum angulosum Barbara Ertter with Delia Taylor 2003-6-22 18226 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
  JEPS102893  Eriogonum covilleanum Barbara Ertter with Susan D'Alcamo 1998-6-12 16166 Contra Costa Devils Elbow trail SE of summit, not far from trailhead Mount Diablo 1036 Comment
  JEPS112016  Eriogonum fasciculatum subsp. foliolosum Dean G. Kelch and Andrew G. Murdock 2004-3-19 AGM 233 Contra Costa Hercules - Carbon. Comment
  UC692048  Eriogonum gracile var. gracile Mary L. Bowerman 1931-9-12 1038 Contra Costa spur jutting into west fork of Mitchell Canyon Mount Diablo, Mitchell Canyon 838 Comment
  UC692050  Eriogonum gracile var. gracile Mary L. Bowerman 1930-9-9 458 Contra Costa North Peak, Mount Diablo Mount Diablo; above Gabriel-Hinks'? Comment
  RSA423119A  Eriogonum luteolum L. S. Rose 1932-6-24 32349 Contra Costa Mt. Diablo 1173 Comment
  CHSC20713  Eriogonum nudum var. auriculatum Robert A. Schlising 1963-7-13 2627 Contra Costa Along Grizzly Peak Blvd, Berkeley-Oakland Hills. Comment
  JEPS75519  Eriogonum nudum var. auriculatum P. F. Yorks 1975-7-18 475 B Contra Costa on Hampton Rd ca 1.7 km s Bear Creek Road (n of Briones Reservoir); Hampton Road Natural Area 190 Comment
  UC6583  Eriogonum nudum var. auriculatum Wm. H. Brewer 1861-9-25 841 Contra Costa Mt. Diablo Comment
  UC692159  Eriogonum nudum var. auriculatum Annetta Carter 1940-6-22 1600 Contra Costa Lime Ridge, n edge of s chaparral patch Mount Diablo 243 Comment
  UC692197  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-17 1578 Contra Costa Donner Canyon, w branch below fork Mount Diablo Comment
  RSA0027715  Eriogonum nudum var. auriculatum Barbara J. Ertter, Rich Rabeler, Tony Morosco 1997-6-10 15662 Contra Costa Point Richmond, crest of road. Comment
  CAS-BOT-BC269817  Eriogonum nudum var. psychicola Peter Rubtzoff 1954-9-14 1745 Contra Costa Along lower San Joaquin River, east of Antioch Comment
  JEPS79013  Eriogonum nudum var. psychicola Edward Lee with Annetta Carter 1935-8-17 1630 Contra Costa Antioch sand-dunes Comment
  CAS-BOT-BC269820  Eriogonum nudum var. psychicola Jerry A. Powell 1962-8-19 3082 Contra Costa Ca. 2 miles east of Antioch Comment
  UC692196  Eriogonum nudum var. pubiflorum Mary L. Bowerman 1932-9-17 1586 Contra Costa Donner Canoyn, w fork toward mouth Mount Diablo Comment
  CAS-BOT-BC267442  Eriogonum truncatum John Thomas Howell 1934-4-8 11816 Contra Costa 10 miles from Clayton on Marsh Creek Road Comment
  CAS-BOT-BC267443  Eriogonum truncatum Mary L. Bowerman 1933-5-25 2198 Contra Costa Mount Diablo. Alamo Canyon: above Wilsons' barn Comment
  POM300579  Eriogonum truncatum Mary L. Bowerman 1933-5-25 2198 Contra Costa Alamo Canyon; above Wilson's barn. Oyster Ridge, west end of south face. Comment
  SBBG65483  Eriogonum truncatum M. K. Curran -May-1886 Contra Costa Antioch Comment
  CAS-BOT-BC298507  Eriophyllum confertiflorum Alice Eastwood 1915-6-21 4739 Contra Costa San Leandro Comment
  UC691724  Eriophyllum confertiflorum var. confertiflorum Mary L. Bowerman 1930-6-5 254 Contra Costa w road <= n road written above> 5.8 mi from entrance; Mount Diablo Comment
  UC691725  Eriophyllum confertiflorum var. confertiflorum Mary L. Bowerman 1933-5-3 1968 Contra Costa due s of summit Mount Diablo 822 Comment
  JEPS34599  Eriophyllum lanatum var. achilleoides W. L. Jepson 1891-5-24 14563 Contra Costa Mt. Diablo Comment
  UC62979  Eriophyllum lanatum var. achilleoides H. M. Hall 1901-4-5 1755 Contra Costa Mt. Diablo Comment
  UC691665  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1935-5-22 3065 Contra Costa Eagle Point Ridge = most w of two ridges which converge at Twin Peaks; Mt. Diablo, Eagle Point Ridge 365 Comment
  UC697147  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1938-6-14 3687 Contra Costa 0.3 mi below Muir Area Mt. Diablo 960 Comment
  CAS-BOT-BC300964  Eriophyllum lanatum var. achilleoides L. Constance 1933-6-25 E 100 Contra Costa N. slope near the summit of Mt. Diablo 1097 Comment
  CAS-BOT-BC300967  Eriophyllum lanatum var. achilleoides L. Constance 1933-6-25 E 98 Contra Costa Summti of Mt. Diablo 1158 Comment
  CAS-BOT-BC300974  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1930-6-14 326 Contra Costa Mount Diablo. Near summit Comment
  CAS-BOT-BC300977  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1933-5-22 2163 Contra Costa Mount Diablo. Cave Point ridge 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
  CDA29765  Erodium botrys D. G. Kelch, Troy MacGregor 2009-5-1 9 .266 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  UC692708  Erodium botrys Mary L. Bowerman 1931-3-14 571 Contra Costa Windy Point Mount Diablo Comment
  JEPS75517  Erodium cicutarium P. F. Yorks 1974-2-24 113 Contra Costa ca 1.9 km s Bear Creek Road on Hampton Road (n of Briones Reservoir); Hampton Road Natural Reserve 200 Comment
  SEINET5604448 Image available Erodium cicutarium Rachel Van Noord 1998-1 4 Contra Costa Dinosaur Hill Park, Pleasant Hill, CA N 37* 56.149' W 122* 05.391 Comment
  UC1130310  Erodium macrophyllum C. M. Belshaw 1936-5-15 2126 Contra Costa 1.75 mi ne Somerville; Mt. Diablo Quad. 152 Comment
  UC17073  Erodium macrophyllum State Survey 1862-5-10 1067 Contra Costa Kirker Pass Comment
  UC762242  Erodium macrophyllum R. F. Hoover 1941-4-12 4838 Contra Costa 1 mi n Lone Tree Valley 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
  UC1191950  Eryngium aristulatum var. aristulatum Peter Kamb, Francia Chisaki, and S. Galen Smith 1951-4-14 1954 Contra Costa 7 mi. n. Walnut Creek (e. of Hwy. 21, 0.2 mi. s. intersection w/ Hwy. 4) Comment
  SEINET10693587 Image available Eryngium aristulatum var. aristulatum Willis L. Jepson 1895-9-1 Jepson s.n. Contra Costa Orinda Park. Comment
  JEPS97706  Eryngium vaseyi Annetta M. Carter, Tom Morley, Malcolm Nobs 1951-3-25 3006 Contra Costa 3.3 mi. S of Byron. Comment
  UC1481544  Eryngium vaseyi Neil Havlik 1980-4-20 907 Contra Costa 5 mi. s. Byron (along Bruns Rd., straddling Alameda-Contra Costa Co. line) Comment
  CAS-BOT-BC40769  Erysimum capitatum G. B. Rossbach; R. P. Rossbach 1938-6-5 858 b Contra Costa Along tidal estuary of San Joaquin River just east of Antioch. Comment
  UC1126603  Erysimum capitatum C. M. Belshaw 1936-5-8 2053 A Contra Costa se slope Mt. Diablo Quadrangle, Mt. Diablo (Plot 5) Comment
  POM224444  Erysimum capitatum var. angustatum Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Antioch Comment
  UC10565  Erysimum capitatum var. capitatum J. Burtt Davy 1895-4-7 996 Contra Costa foothills Antioch 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
  LA204363  Erysimum capitatum var. capitatum Herbert L. Mason; 1933-4-9 7189 Contra Costa E of Antioch along San Joaquin River 12 Comment
  JEPS111863  Erysimum cheiri D. G. Kelch 2004-4-11 04 .75 Contra Costa Crockett - Crolona Heights Hillside above Rolf Drive. Lower Crolona heights 15 Comment
  CAS-BOT-BC55199  Erysimum repandum Ira L. Wiggins 1930-4-17 4574 Contra Costa Railway right of way 0.25 mile south of Byron. Comment
  CHSC75109  Eschscholzia californica Roger Thom 1987-4-21 6 Contra Costa 3300 block of Johnson Rd. Lafayette. 167 Comment
  JEPS12792  Eschscholzia californica Rimo Bacigalupi with G. T. Robbins 1955-5-4 4982 Contra Costa 1 1/4 mi e Antioch; San Joaquin River front 9 Comment
  JEPS79015  Eschscholzia californica Edward Lee with Annetta Carter 1935-8-17 1632 Contra Costa Antioch Sand-dunes Comment
  UC692172  Eschscholzia californica Mary L. Bowerman 1935-5-22 3059 Contra Costa saddle w Twin Peaks (Eagle Point ridge); Mount Diablo 441 Comment
  CAS-BOT-BC402985  Eschscholzia californica A. A. Heller 1908-4-16 8891 Contra Costa Hills east of Antioch 22 Comment
  UC692191  Eschscholzia californica Mary L. Bowerman 1930-6-28 386 Contra Costa near road above junction; Mount Diablo Comment
  POM253322  Eschscholzia californica subsp. californica A. A. Heller 1938-4-9 15018 Contra Costa 3 miles southwest of Antioch. Comment
  JEPS100064  Eucalyptus globulus A. Langston 2003-7-24 AL 72 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UCSB5236  Eucrypta chrysanthemifolia 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
  JEPS1724  Eucrypta chrysanthemifolia var. chrysanthemifolia Ivar Tidestrom Jun 1895 Contra Costa Crockett Comment
  UC24009  Eucrypta chrysanthemifolia var. chrysanthemifolia Jos. Burtt Davy 1901-4-21 6923 Contra Costa Wildcat Canyon Comment
  JEPS111951  Euphorbia oblongata D. G. Kelch 2004-6-6 04 .224 Contra Costa Martinez - Train Station Downtown Martinez. Alhambra Creek near bay and railroad Station 2 Comment
  UC2028283  Euphorbia oblongata Barbara Ertter 1998-6-20 16245 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, roadside near Old Borges Ranch. Comment
  CDA18802  Euphorbia oblongata B. Case 2000-4-2 PDR 031733 Contra Costa San Pablo. 0 Comment
  UCD142410  Euphorbia oblongata Thomas C. Fuller 1958-7-30 s.n. Contra Costa State Highway 4; 3 miles west of Martinez. Comment
  CAS-BOT-BC202390  Euphorbia ocellata Mary L. Bowerman 1931-8-29 1033 Contra Costa Mount Diablo. North Road 487 Comment
  UC2028025  Euphorbia ocellata subsp. ocellata Barbara Ertter 1997-9-14 15808 Contra Costa West side of Mount Diablo, ponds along Barbeque Terrace Road in upper Pine Canyon. Comment
  CHSC75081  Euphorbia peplus Roger Thom 1987-5-24 15 Contra Costa 1510 Carmel Dr. Walnut Creek. Rose garden. 30 Comment
  UC1818890  Euphorbia peplus Barbara Ertter, Gary Schoolcraft 1996-4-7 14577 Contra Costa Molate Beach Park on San Francisco north of San Rafael Bridge; south end of parking area, in partial shade of planted shrub. Comment
  UC2062608  Euphorbia spathulata Barbara Ertter with David Gowen, Mike Park, Wilde Legard 2004-4-13 18345 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, east of River View Loop Trail, over saddle east of park headquarters at Sidney Flat Comment
  CAS-BOT-BC458288  Euthamia occidentalis Walter Knight; Irja Knight 1978-8-14 3139 Contra Costa Browns Island Comment
  JEPS118744  Extriplex joaquinana Sarah Lynch 2012-8-1 s. n. Contra Costa Tassajara Valley (south of Danville); north of Camino Tassajara and west of Finley Road Comment
  CAS-BOT-BC278316  Festuca californica subsp. californica Mary L. Bowerman 1935-5-30 3094 Contra Costa Mount Diablo. Between the two ridges which converge at Twin Peaks (Eagle Point ridge) 350 Comment
  CDA21547  Festuca idahoensis D. G. Kelch 2000-4-9 0 .14 Contra Costa Altamont Hills; 1.5 miles E of Midway on old roadcut between RR tracks and Via Nicolo Road. Comment
  UC1949268  Festuca microstachys Barbara Ertter 1991-5-5 9779 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, ridge E of Coal Canyon, N-facing slope Comment
  CDA32670  Festuca pratensis D. G. Kelch, Andrew G. Murdock 2004-5-7 4 .195 Contra Costa Carquinez Strait; Canada del Cierbo. Comment
  CAS-BOT-BC278927  Festuca rubra J. Burtt Davy 1897-4-1 s.n. Contra Costa Point Isabel Comment
  RSA722105  Festuca rubra Barbara Ertter, Brad Olson 1994-5-7 12752 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  SEINET4343746 Image available Festuca rubra Barbara Ertter, Brad Olson 1994-5-7 12752 Contra Costa South end Pt Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay Comment
  CDA5267  Filago californica D. G. Kelch, A. G. Murdock 2005-5-13 5 .278 Contra Costa Carquinez Strait Region; Martinez - West: Ozol Rock and Scenic Drive. Comment
  RSA93678  Filago gallica H. L. Mason 1928-4-26 4386 Contra Costa Berekeley-Oakland Hills Comment
  CHSC75044  Foeniculum vulgare Roger Thom 1987-5-18 13 Contra Costa 1.0mi from intersection with Pleasant Hill Rd on Reliez Valley Road. Lafayette. (1600 block) 182 Comment
  UC1123360  Fraxinus dipetala C. M. Belshaw 1936-5-15 2128 Contra Costa Stewartsville Mt. Diablo Quad. 228 Comment
  UC691838  Fraxinus dipetala Mary L. Bowerman 1935-6-1 3103 Contra Costa first small ridge e Mitchell-Pine divide; Mount Diablo 1005 Comment
  UC2027778  Fraxinus dipetala Barbara Ertter with Holly Forbes 1997-4-20 15561 Contra Costa North base of Mount Diablo, Eagle Peak Trail on NE side of Eagle Ridge below Twin Peaks. Comment
  SEINET3559576 Image available Fritillaria lanceolata Lewis S. Rose 1934-3-7 34047 Contra Costa Mount Diablo. Comment
  JEPS55706  Fritillaria liliacea W. Hirano 1954-3-11 Contra Costa opposite Mira Vista Country Club (at Arlington Avenue); Arlington Avenue Comment
  CAS-BOT-BC422442  Fumaria capreolata Barbara Ertter 1999-3-21 16486 Contra Costa Miller Knox Regional Park near Point Richmond, edge of old excavation into rock (southeast of Richmond Ramblers building). Comment
  JEPS7030  Galium andrewsii subsp. gatense W. L. Jepson 1918-6-5 7606 Contra Costa summit North Peak Mt. Diablo 1066 Comment
  JEPS112106  Galium aparine D. G. Kelch 2003-4-3 03 .352 Contra Costa Cummings Skyway South of Cummings Skyway and Crockett Blvd 134 Comment
  JEPS112111  Galium aparine D. G. Kelch 2005-3-24 05 .53 Contra Costa Point Pinole. Southern Pt. Pinole. 3 Comment
  UC691536  Galium aparine Mary L. Bowerman 1932-4-27 1374 Contra Costa canyon w Riggs Canyon; Mount Diablo, Oyster Ridge 289 Comment
  UC691537  Galium aparine Mary L. Bowerman 1935-6-1 3101 Contra Costa gully e Mitchell-Pine Divide; Mount Diablo 975 Comment
  SBBG27401  Galium murale J. T. Howell 1942-4-26 16953 Contra Costa Redwood Cyn, Oakland Hills Comment
  UCSB6254  Galium nuttallii subsp. nuttallii Keator, Glenn 1959-7-1 Contra Costa Laurel camp on Mt. Diablo Comment
  RSA0029676  Galium parisiense Barbara Ertter, Susan D'Alcamo 1998-6-12 16168 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit, steep rocky S-facing bowl. 1037 Comment
  UC2028303  Galium parisiense Barbara Ertter, Susan D'Alcamo 1998-6-12 16168 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit. Comment
  UC691533  Galium porrigens Mary L. Bowerman 1935-5-16 2982 Contra Costa flat at end of road Mount Diablo, Russelman Park 381 Comment
  CHSC22852  Garrya elliptica Robert A. Schlising; Et al 1962-2-21 2080 Contra Costa Coast Ranges. Berkeley-Oakland Hills of westernmost part of county. Comment
  UC634816  Garrya elliptica H. L. Mason 1925-9-12 2223 Contra Costa head of San Leandro Creek Canyon; Oakland Hills Comment
  UCD121109  Garrya elliptica Beecher Crampton 1957-11-20 4651 Contra Costa Berkeley Hills. Contra Costa- Alameda County line. Comment
  CAS-BOT-BC169944  Garrya fremontii Lewis S. Rose 1954-6-29 54084 Contra Costa Mt. Diablo, summit 1170 Comment
  CAS-BOT-BC169947  Garrya fremontii Mary L. Bowerman 1930-6-7 s.n. Contra Costa Meridian Peak Summit Comment
  CAS-BOT-BC282609  Gastridium phleoides Mary L. Bowerman 1931-5-2 798 a Contra Costa Foot of Eagle Point ridge, Mount Diablo Comment
  UCD66597  Gastridium phleoides M. Wiesendanger 1926-5-1 1523 Contra Costa Near Richmond. Comment
  UC691264  Gastridium ventricosum Mary L. Bowerman 1932-11-19 1664 Contra Costa Alder Spring (Mountain Springs Canyon--In 1936 beneath fire trail e from Pioneer Camp) Mount Diablo; , Alder Spring Comment
  CAS-BOT-BC278704  Gastridium ventricosum Mary L. Bowerman 1932-4-27 1397 Contra Costa Mount Diablo. Oyster Ridge, south face, canyon west of Riggs Canyon 335 Comment
  CHSC24900  Geranium dissectum T. S. Byler 1976-4-17 14 Contra Costa Ca 200 yds n of Lafayette Reservoir, ca 50 yds e of entrance road. 152 Comment
  JEPS111976  Geranium dissectum D. G. Kelch 2004-4-3 04 .49 Contra Costa Martinez - Vine Hill 44 Comment
  UC1555366  Geranium dissectum Jerry Powell 1988-5-18 1532 Contra Costa w Richmond Point Molate Comment
  JEPS111982  Geranium robertianum D. G. Kelch 2005-5-13 05 .254 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Area along Vista Road ~ 2.5 kiloms West of Martinez 45 Comment
  OBI72045  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills E of Berkeley, restoration site NE of jctn of Grizzly Peak Blvd & Golf Course Dr 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
  UC2031458  Gilia achilleifolia subsp. achilleifolia Barbara Ertter with David Gowen 2014-4-12 21716 Contra Costa On north side of Prospectors Gap Road ca. 1 mile east of Mount Diablo summit Comment
  UC23730  Gilia achilleifolia subsp. multicaulis Bolander April 1866 6400 Contra Costa Mt. Diablo Comment
  SEINET12278771  Gilia capitata H. M. Hall 1901-1 s.n. Contra Costa Region of San Francisco Bay, Mt. Diablo Comment
  UC30197  Gilia capitata subsp. staminea W. H. Brewer 1862-5-19 1118 Contra Costa n Kirker Pass; n of Kirker Pass Comment
  RSA79448  Gilia capitata subsp. staminea E. K. Crum 1936-4-5 1745 Contra Costa South Coast Ranges, 2 miles W of Bryon 46 Comment
  RSA83089  Gilia capitata subsp. staminea Verne Grant, Alva Grant 1947-4-13 7925 Contra Costa By railroad tracks east of Antioch. Comment
  UC909004  Gilia clivorum Herbert L. Mason 1928-4-15 4358 Contra Costa top Moraga Ridge; top of Moraga Ridge Comment
  UC963965  Gilia clivorum R. F. Hoover 1938-3-25 2895 Contra Costa Markley Canyon 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
  CDA927  Gilia tricolor D. G. Kelch 2004-3-13 4 .042 Contra Costa Road cut on Marsh Creek Road ~ 1.5 miles W of Deer Valley Road. Comment
  CHSC21634  Gilia tricolor Willis Ball 1975-3-9 489 Contra Costa Contra Loma Regional Park. In area #8. Level mound ca. 450 yds s of main parking lot ca. 750 yds w of Contra Loma Blvd. 76 Comment
  RSA489707A  Gilia tricolor H. de Forest 1930-3-28 s.n. Contra Costa Mt. Diablo. Comment
  UC809626  Gilia tricolor subsp. diffusa Verne Grant, Alva Grant 1949-3-30 8640 Contra Costa on Marsh Creek road 4 mi w Byron; w of Byron Comment
  JEPS11821  Githopsis diffusa subsp. robusta Mary L. Bowerman 1931-5-16 851 Contra Costa Meridian Peak summit Mount Diablo Comment
  UC691589  Githopsis diffusa subsp. robusta Mary L. Bowerman 1931-5-16 851 Contra Costa Mount Diablo Comment
  SEINET10972175  Githopsis diffusa subsp. robusta Alice Eastwood 1915-5-30 Eastwood s.n. Contra Costa Comment
  CAS-BOT-BC303891  Gnaphalium palustre Mary L. Bowerman 1935-6-28 3168 Contra Costa Mt Diablo. Chase Pond. S of summit, by Old Government Trail: dry upper margins of pond 548 Comment
  CDA1504  Gnaphalium stramineum D. G. Kelch 1996-10-17 s.n. Contra Costa Carquinez Strait; Pt Edith Marsh Comment
  POM721360  Gnaphalium stramineum Barbara Ertter, Richard K. Rabeler 1994-6-6 12817 Contra Costa Point Isabel in S Richmond; on old railroad bed north of Costco. Comment
  CDA34248  Grindelia camporum D. G. Kelch 2009-5-24 9 .303 Contra Costa Carquinez Strait; S of Ozol, W/SW of Martinez. Comment
  OBI16393  Grindelia camporum Robert F. Hoover 1969-9-1 11569 Contra Costa Between San Pablo and Pinole Comment
  CAS-BOT-BC305220  Grindelia hirsutula Lewis S. Rose 1952-11-26 52020 Contra Costa Pittsburg 3 Comment
  CAS-BOT-BC305228  Grindelia hirsutula Lewis S. Rose 1954-11-23 54136 Contra Costa 1 mi. s. of Pittsburg 15 Comment
  CAS-BOT-BC305243  Grindelia hirsutula Walter Knight 1978-7-13 s.n. Contra Costa Browns Island Comment
  JEPS111758  Grindelia hirsutula D. G. Kelch 2005-5-13 05 .243 Contra Costa Martinez. South of oil refinery along Railroad tracks in fragment of habitat 28 Comment
  JEPS40435  Grindelia hirsutula William Turner 1965-11-23 Contra Costa in the sand hills just e Antioch (along the San Joaquin River); , in the Antioch sand hills Comment
  JEPS41884  Grindelia hirsutula W. L. Jepson 1895-9-14 Contra Costa Walnut Creek Comment
  JEPS75304  Grindelia hirsutula L. R. Heckard 1975-11-2 4212 Contra Costa nw side Brooks Island; Richmond Comment
  UC1594186  Grindelia hirsutula Jerry Powell 1992-5-20 1647 Contra Costa Richmond Field Station Comment
  UC1606421  Grindelia hirsutula Barbara Ertter 1993-5-9 11719 Contra Costa near Brickyard Landing (bluffs at end of Garan Road, sw corner of Point Richmond); Point Richmond 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
  CAS-BOT-BC305242  Grindelia hirsutula John Thomas Howell 1929-9-21 4387 Contra Costa 4 miles west of Clayton Comment
  SEINET10724143  Grindelia hirsutula John T. Middleton Middleton s.n. Contra Costa Seaside, Richmond. Comment
  UC10934  Guillenia flavescens W. H. Brewer Contra Costa near 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
  UC691154  Guillenia flavescens Mary L. Bowerman 1935-4-22 2879 Contra Costa 2 mi from North Gate (North Road, just w of chaparral); Mount Diablo 213 Comment
  UC691155  Guillenia flavescens Mary L. Bowerman 1935-6-8 3122 Contra Costa 2 mi from West road (= North Rd.) entrance (w of chaparral); Mount Diablo Comment
  UC691080  Guillenia lasiophylla Mary L. Bowerman 1935-4-22 2892 Contra Costa ridge w Pioneer Road (w of Old Stage Road); Mount Diablo 853 Comment
  CAS-BOT-BC304577  Gutierrezia californica Peter Rubtzoff 1951-10-7 822 Contra Costa Along lower San Joaquin River, east of Antioch Comment
  JEPS40433  Gutierrezia californica William Turner 1965-10-13 Contra Costa in the sand hills Antioch (along the San Joaquin River); San Joaquin River, Antioch Comment
  UC1076516  Gutierrezia californica H. L. Mason 1929-9-21 5435 Contra Costa 3 mi above Clayton (Marsh Creek road) Comment
  UC697195  Gutierrezia californica Mary L. Bowerman 1938-11-12 3729 Contra Costa toward crest of hillside n Lime Ridge; Mount Diablo, Lime Ridge 152 Comment
  UCD132631  Gutierrezia californica Peter Rubtzoff 1954-9-14 1750 Contra Costa Lower San Joaquin River, E of Antioch. Comment
  UC1050450  Hebe hulkeana N. Floy Bracelin 1941-5-4 1277 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  SEINET10579391  Hedera helix Barbara J. Ertter 1994-10-23 Ertter 13915 Contra Costa Southwest El Cerrito, north edge of Breuner's parking lot, northwest Albany Hill. Comment
  JEPS35429  Helenium puberulum John Thomas Howell 1926-1-16 1626 Contra Costa San Leandro Canyon Oakland Hills Comment
  CDA6433  Helenium puberulum T. C. Fuller 1958-7-3 1270 -58 Contra Costa Carquinez Strait; Highway 4, 4 miles west of Martinez. 0 Comment
  POM312329  Helenium puberulum Malcolm A. Nobs, S. Galen Smith 1949-7-8 949 Contra Costa Otto's Black Bass Resort, 4 miles north of Kingston. Comment
  CAS-BOT-BC314698  Helianthella californica var. californica Paul F. Covel 1938-5-8 s.n. Contra Costa Mount Diablo Comment
  JEPS101391  Helianthella castanea Dean Wm. Taylor and Sally deBecker 2000-5-14 17454 Contra Costa Lime Ridge, Mount Diablo Region; in a gully 0.3 air miles due south of VABM 1001, and about 100 m due south of the base of Tower 1/9 of the PG&E Clayton-Lakewood transmission line 289 Comment
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Mar 14 2018
  JEPS21042  Helianthella castanea W. L. Jepson 1922-5-23 9654 Contra Costa Mt. Diablo; summit Comment
  JEPS86612  Helianthella castanea L. R. Heckard 1989-4-22 6727 a Contra Costa Rocky Point Mt. Diablo State Park Comment
  RSA8535  Helianthella castanea J. T. Howell 1933-5-14 11282 Contra Costa Hills east of St. Mary's college Comment
  JEPS35456  Helianthus annuus W. L. Jepson 1895-9-14 Contra Costa Walnut Creek Comment
  CAS-BOT-BC305605  Helianthus californicus Walter Knight; Joanne Dean 1978-8-14 3182 Contra Costa Browns Island Comment
  UC697183  Helianthus californicus Mary L. Bowerman 1932-9-17 1581 Contra Costa west fork Donner Canyon (streambed); Mount Diablo Comment
  RSA0012946  Helianthus californicus Joseph A. Ewan 1933-10-15 8037 Contra Costa SW slope of Mount Diablo. Comment
  CDA33069  Heliotropium curassavicum D. G. Kelch 2010-10-5 10 .422 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UC1063893  Heliotropium curassavicum H. S. Yates 1934-9-2 4073 Contra Costa 1 mi. n.e. Danville; Mt. Diablo Quad. 450 Comment
  UC1084508  Heliotropium curassavicum G. Thomas Robbins 1940-5-19 330 Contra Costa roadside between Antioch and Rio Vista Rio Vista Comment
  UC1613441  Heliotropium curassavicum Charles M. Belshaw 1935-5-30 947 Contra Costa Island route about 10 mi n of Antioch Bridge Comment
  CHSC75063  Helminthotheca echioides Roger Thom 1987-5-28 26 Contra Costa 3300 block of Johnson Rd. 0.3 mi from intersection with Reliez Valley Rd. Lafayette. Edge of pasture. 137 Comment
  UC691497  Helminthotheca echioides Mary L. Bowerman 1936-8-8 3524 Contra Costa w fork Diablo Stock Farm Canyon (= Emmons Cayon, Wattis Ranch); Mount Diablo, Diablo Stock Farm (Wattis Ranch) Canyon, w for Comment
  UC697141  Helminthotheca echioides Mary L. Bowerman 1936-10-24 3583 Contra Costa Mount Diablo, North Road 131 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
  CAS-BOT-BC305873  Helminthotheca echioides R. E. Frenkel 1964-6-20 593 Contra Costa On Giant Road, 0.4 mile north of ATSF RR crossing, Richmond 15 Comment
  UC201231  Hemizonia congesta subsp. lutescens H. M. Hall 1914-8-23 9860 Contra Costa 2 km nw San Pablo 9 Comment
  UC201233  Hemizonia congesta subsp. lutescens H. M. Hall 1914-8-23 9861 Contra Costa San Pablo 15 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
  UC201236  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-23 9858 Contra Costa Richmond Region of San Francisco Bay, Richmond Comment
  UC201237  Hemizonia congesta subsp. luzulifolia H. M. Hall 1916-7-24 10254 Contra Costa Richmond Region of San Francisco Bay Comment
  CAS-BOT-BC314851  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-BC314855  Hemizonia congesta subsp. luzulifolia Mary L. Bowerman 1931-10-13 1061 Contra Costa Sycamore Valley west of Sycamore Creek, Mount Diablo Comment
  CAS-BOT-BC314860  Hemizonia congesta subsp. luzulifolia R. F. Hoover 1966-8-31 9947 Contra Costa North of Livermore Valley on Highland Road Comment
  CAS-BOT-BC314868  Hemizonia congesta subsp. luzulifolia Jean L. Pawek 1964-8-29 608 Contra Costa Tilden Park Comment
  CAS-BOT-BC314870  Hemizonia congesta subsp. luzulifolia H. M. Hall 1917-5-27 10314 Contra Costa Fish Ranch, Berkeley Hills Comment
  UC691542  Hemizonia congesta subsp. luzulifolia Mary L. Bowerman 1932-5-1 1405 Contra Costa grassy knoll e of creek and just n water tank; Mount Diablo, Alamo Canyon 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
  POM299467  Hemizonia fitchii L. S. Rose 1941-10-13 41464 Contra Costa 1 miles E of Walnut Creek. 50 Comment
  POM301047  Hemizonia luzulifolia Mary L. Bowerman 1931-10-13 1061 Contra Costa Sycamore Valley, W of Sycamore Creek. Comment
  POM52253  Hemizonia pungens subsp. pungens A. D. E. Elmer 1903-05 4892 Contra Costa Walnut Creek Comment
  POM53580  Hemizonia pungens subsp. pungens C. F. Baker 1903-4-27 2875 Contra Costa Byron. Comment
  UC901876  Heracleum lanatum L. Constance 1950-6-25 3326 Contra Costa s. rim Wildcat Canyon (Tilden Park); , Tilden Park 365 Comment
  SBBG44745  Heracleum maximum Leota Davidson 1966-5-2 417 Contra Costa Hwy 24 near Walnut Crk turn-off Comment
  CAS-BOT-BC403790  Hesperocnide tenella Peter Rubtzoff 1980-6-2 9451 Contra Costa U.C. Russell Evergreen Tree Farm (on Happy Valley Road ca. 3.5 miles northwest of Mt. Diablo Blvd in Lafayette and ca. 0.5 mile southeast of Bear Creek Road junction Comment
  CAS-BOT-BC167433  Hesperolinon breweri John Thomas Howell 1942-7-19 17047 Contra Costa Serpentine ne. of Deer Flat, Mt. Diablo Comment
  UCD95453  Hesperomecon linearis Annetta M. Carter 1933-4-23 298 Contra Costa above the San Joaquin River, between Antioch Bridge and Antioch. Comment
  OBI7752  Heteromeles arbutifolia Dennis Voight 1975-11-26 22 Contra Costa Found in the Briones reservoir area 1.5 mi E of Bear Creek rd 152 Comment
  CDA22495  Heterotheca grandiflora D. G. Kelch, Mike Park 2008-9-1 8 .294 Contra Costa Carquinez Strait; 200 m W of Pacheco Slough, E of Martinez. Comment
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Dec 4 2011
  UC581755  Heterotheca grandiflora Joseph P. Tracy 1932-9-10 10783 Contra Costa on Franklin Canyon Rd e Pinole; Rodeo Creek 91 Comment
  CAS-BOT-BC318824  Heterotheca grandiflora A. j. Soares 1925-11-1 s.n. Contra Costa Hayward Comment
  UC1619993  Heterotheca sessiliflora subsp. bolanderi Barbara Ertter 1991-5-5 9770 Contra Costa s of Pittsburg (s side of Rose Hill above cemetery, Black Diamond Mines Regional Preserve); Black Diamond Mines Regional Preserve, Rose Hill 365 Comment
  CAS-BOT-BC311160  Heterotheca sessiliflora subsp. bolanderi John Thomas Howell 1930-7-31 5416 Contra Costa North Berkeley Hills 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
  UC691479  Holocarpha heermannii Mary L. Bowerman 1930-7-20 409 Contra Costa Silver Spring Comment
  CAS-BOT-BC316050  Holocarpha heermannii Lewis S. Rose 1933-10-22 33387 Contra Costa Wildcat Canyon Comment
  CAS-BOT-BC325827  Holocarpha heermannii Walter Knight 1977-7-20 s.n. Contra Costa Briones Ridge, Briones Regional Park 304 Comment
  CAS-BOT-BC325831  Holocarpha heermannii John Thomas Howell 1930-9-28 5499 Contra Costa 6.3 miles from Byron on teh Marsh Creek Road Comment
  CAS-BOT-BC325835  Holocarpha heermannii David D. Keck 1933-11-2 2624 Contra Costa 5 miles SE of Clayton on Marsh Creek Road just opposite Mt. Diablo Comment
  POM360677  Holocarpha heermannii Hattie Beuton 1917-09 3287 Contra Costa Mt. Diablo. Comment
  JEPS75032  Holocarpha macradenia David J. Powers 1974-10-6 1001 Contra Costa 100-300 ft e Hwy 80 (100-300 yd s Appian Way); Pinole Comment
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Jul 23 2013
  UCD133201  Holocarpha macradenia Walter Knight; Irja Knight 1978-8-8 3101 Contra Costa southeast corner of Interstate 80 and Appian Way, 1 mile north of El Sobrante. Comment
  CAS-BOT-BC320261  Holocarpha obconica John Thomas Howell 1930-9-28 5500 Contra Costa 6.3 miles from Byron on the Marsh Creek Road Comment
  UC1357615  Holocarpha obconica R. F. Hoover 1965-9-24 9649 Contra Costa foothills w Byron (between Kellogg and Marsh Creeks) Comment
  UC517968  Holocarpha obconica John Thomas Howell 1930-9-28 5501 Contra Costa dry hills along the Marsh Creek Road 5.4 mi from Byron Comment
  CAS-BOT-BC320241  Holocarpha obconica Margi Oard 1988-10-9 s.n. Contra Costa Ca. 2 miles east of junction with Deer Valley Road along north side of Marsh Creek Road Comment
  CAS-BOT-BC320258  Holocarpha obconica David D. Keck; J. Clausen 1933-10-27 2566 Contra Costa Vasco Road at junction with Byron Road Comment
  POM299469  Holocarpha obconica subsp. obconica L. S. Rose 1941-10-16 41466 Contra Costa 6 miles W of Byron, on the Marsh Creek Road. 33 Comment
  CAS-BOT-BC324616  Holocarpha virgata R. F. Hoover 1969-8-29 11566 Contra Costa Raymond Road and Ames Street, Livermore Valley Comment
  UC1357613  Holocarpha virgata subsp. virgata R. F. Hoover 1965-9-24 9648 Contra Costa foothills w, e of Kellogg Creek Byron Comment
  UC532119  Holocarpha virgata subsp. virgata David D. Keck 1933-10-27 2568 Contra Costa 1.6 mi w Byron (1.4 mi from junction with Vasco Road) Comment
  RSA94065  Holocarpha virgata subsp. virgata J. T. Howell 1930-9-28 5501 Contra Costa 5.4 miles from Byron on Marsh Creek Road. Comment
  JEPS99981  Holodiscus discolor A. Langston 2003-6-12 AL 40 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site 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
  UC2028961  Hordeum depressum Barbara Ertter with Brad Olson et al. 2000-6-2 17304 Contra Costa Brushy Peak Regional Preserve NE of Livermore, at south base of Brushy Peak. Comment
  CDA32929  Hordeum marinum subsp. gussoneanum D. G. Kelch 2009-5-24 9 .301 Contra Costa Carquinez Strait; S of Ozol, W/SW of Martinez. Comment
  POM301853  Hordeum murinum subsp. glaucum Mary L. Bowerman 1933-5-8 2003 Contra Costa Fossil Ridge, south face, not far from but out of sight of South Gate 290 Comment
  UCD85917  Hordeum murinum subsp. glaucum A. A. Beetle 1942-3-22 2924 Contra Costa Taber Island. Small island off NW side of Brooks Island in San Francisco Bay. Comment
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Aug 20 2011
  RSA611285  Horkelia frondosa Joseph A. Ewan 1934-5-20 8926 Contra Costa Contra Costa County: Russelmann Park, N side Mt. Diablo Comment
  CHSC67907  Hornungia procumbens James D. Jokerst 1989-3-28 3057 Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Meadow. Comment
  RSA691938  Hypericum calycinum Barbara Ertter 1993-6-25 11907 Contra Costa Oakland-Berkeley Hills, Grizzly Peak Boulevard ca 1/4 miles south of Tilden miniature steam trains (1/4 miles south of junction of Lomas Cantadas), mixed scrub forest. 488 Comment
  CAS-BOT-BC312935  Hypochaeris glabra Mary L. Bowerman 1931-4-4 631 Contra Costa Mount Diablo. Two miles by road from west entrance (North Gate) Comment
  UC407368  Hypochaeris glabra Ira L. Wiggins 1930-4-18 4596 Contra Costa Comment
  RSA0013874  Ibicella lutea G. Thomas Robbins 1959-8-1 4114 Contra Costa Recently completed frontage road just south of Mt. Diablo Blvd. (about 0.5 mi. E of concrete bridge at Charles Hill and about 0.2 mi. W of junction of Hidden Valley Road), about 2 mi. W of Lafayette. 145 Comment
  UC1789186  Iris foetidissima Barbara Ertter 2000-5-20 17025 Contra Costa Sibley Volcanic Regional Preserve, Oakland Hills, trail on ridge behind interpretative center. Comment
  UC1818909  Isoetes howellii Barbara Ertter, Mary Bowerman et al. 1995-5-7 14032 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, in water of pond west of road in grassy flat. Comment
  UCD15912  Isolepis cernua Molly Hunter 1998-7-7 s.n. Contra Costa Concord Naval Weapons Station, along Highway 4, Northeast of city of Concord (about 300 meters South of Suisun Bay). 0 Comment
  UC613042  Jaumea carnosa C. W. Sharsmith 1933-9-15 476 Contra Costa saline marshlands near Carquinez Straits; San Pablo Bay Comment
  JEPS46453  Juglans californica W. L. Jepson 1901-10-13 Contra Costa near Lafayette Comment
  JEPS46455  Juglans californica var. hindsii W. L. Jepson 1908-8-16 3087 Contra Costa Walnut Creek 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-BC102304  Juglans hindsii Lewis S. Rose 1936-4-24 36140 Contra Costa Marsh Creek, 5 mi. E. of Clayton 60 Comment
  CAS-BOT-BC102307  Juglans hindsii Mary L. Bowerman 1936-5-6 3412 Contra Costa Mitchell Canyon floor 259 Comment
  CAS-BOT-BC109899  Juncus Walter Knight; Irja Knight 1977-6-27 s.n. Contra Costa Sierra Nevada. Las Trampas Wilderness Park. Mahogany Trail near Little Hills Ranch. Comment
  UC691984  Juncus ambiguus Mary L. Bowerman 1930-6-10 292 Contra Costa Mount Diablo, Mineral Spring Mineral Spring; Mount Diablo, Mineral Spring Comment
  UCD146718  Juncus ambiguus G. F. Hrusa; D. Crowe 1998-5-8 14365 Contra Costa Sacramento-San Joaquin River Delta. Near San Joaquin River shore within Dow Chemical Property at Pittsburg. 10 Comment
  SEINET3840813  Juncus arcticus subsp. littoralis Unknown 2006-7-14 6 .326 Contra Costa East of Martinez, Along Marine Vista avenue immediately west of Pacheco Slough 1 Comment
  CDA9363  Juncus balticus D. G. Kelch 2006-7-14 6 .326 Contra Costa Carquinez Strait; Along Marine Vista Ave immmediately west of Pacheco Slough. East of Martinez. Comment
  UC2028285  Juncus balticus Barbara Ertter 1998-6-20 16238 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance. Comment
  UCD141351  Juncus balticus subsp. ater M. Wiesendanger 1926-5-1 1472 Contra Costa near Richmond. Comment
  JEPS99492  Juncus bufonius var. bufonius Mary Bowerman 1995-6-4 Contra Costa Mount Diablo, North Gate Rd. Comment
  UC691985  Juncus bufonius var. bufonius Mary L. Bowerman 1931-4-11 705 Contra Costa Sulphur Spring in Pine Canyon, Mount Diablo Sulphur Spring; Mount Diablo, Pine Canyon, Sulphur Spring 137 Comment
  JEPS127264  Juncus bufonius var. congestus Lowell Ahart, Josephine Guardino 2016-4-19 20786 Contra Costa 1.4 miles (air) northwest of Los Vaqueros Reservoir Marina, 1.9 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
  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
  UC2028966  Juncus bufonius var. congestus Barbara Ertter with Brad Olson et al. 2000-6-2 17305 Contra Costa Brushy Peak Regional Preserve NE of Livermore, at south base of Brushy Peak. Comment
  CDA9521  Juncus effusus D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .25 Contra Costa CA Delta; Along the old San Joaquin River Channel, S of Clifton Court Forebay and SE of Byron. Comment
  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
  UC1795655  Juncus occidentalis Barbara Ertter, Gary Schoolcraft, Tony Morosco 1996-4-6 14566 Contra Costa West end Oyster Point Rd in Mt Diablo State Park, moist meadow just east of junction. 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
  JEPS112437  Juncus patens D. G. Kelch 2004-5-7 04 .200 Contra Costa Ca ada del Cierbo Ca ada del Cierbo 40 Comment
  JEPS99595  Juncus patens Mary Bowerman 1993-10-22 Contra Costa Mount Diablo, Pine Pond floodplain. Comment
  UCD141766  Juncus patens M. Wiesendanger 1926-5-1 1465 Contra Costa near Richmond. Comment
  SEINET11785699  Juncus phaeocephalus Unknown 1940-1 1004 b Contra Costa 2 mi S of San Rafael ferry dock Comment
  JEPS111078  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
  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
  RSA0027402  Juncus phaeocephalus var. paniculatus Barbara Ertter 1999-7-17 16765 Contra Costa Wildcat Canyon Regional Park in East Bay Hills, Wildcat Creek Trail between Rifle Range Road and boundary with Tilden Regional Park. On east side of road. Comment
  JEPS112444  Juncus tenuis D. G. Kelch 2003-4-3 03 .366 Contra Costa Cummings Skyway 115 Comment
  UC2046369  Juncus usitatus Barbara Ertter 2015-10-9 22456 Contra Costa N end of walkway on east edge of Dow Marsh west of Antioch marina on San Joaquin River Delta. Comment
  UC2670  Juncus xiphioides W. H. Brewer 1861-9-25 838 Contra Costa halfway up Monte Diablo from Mission San Jose; Mount Diablo Comment
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Jan 15 2012
  JEPS48238  Juniperus californica W. L. Jepson 1918-6-5 7617 Contra Costa North Peak, Mt. Diablo Mt. Diablo, North Peak 822 Comment
  UC480589  Juniperus californica Carl Meyer 1928-2-22 282 Contra Costa Mt. Diablo Comment
  UC727702  Juniperus californica Milo S. Baker 1946-1-1 11255 Contra Costa ca halfway to summit Mt. Diablo (near roadside at parking place) Comment
  UC78  Juniperus californica Edw. L. Greene 1892-6-20 Contra Costa Mt. Diablo Comment
  UC85  Juniperus californica W. H. Brewer 1861-9-25 840 Contra Costa Top of Mount Diablo Comment
  SEINET10531635  Juniperus californica Joseph A. Ewan 1933-10-15 Ewan 8038 Contra Costa Scattered but not uncommon on rock outcrops of SW slope, Mt. Diablo. 1065 Comment
  CAS-BOT-BC235872  Keckiella corymbosa Paul F. Covel 1938-7-1 1472 Contra Costa Summit Mt. Diablo Comment
  CAS-BOT-BC235873  Keckiella corymbosa H. E. McMinn 1922-6-2 97 Contra Costa Near summit of Mt. Diablo Comment
  POM156900  Keckiella corymbosa A. D. E. Elmer 1903-07 4956 Contra Costa Mount Diablo Comment
  JEPS100145  Kickxia elatine A. Langston 2003-7-24 AL 73 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UCR246750  Kochia scoparia C. Thayer, Erin McDermott 2006-8-23 082306 A Contra Costa Antioch, northwest corner of Deer Valley Road and Lone Tree Way, along the Mokelumne Aquedduct right-of-way. 45 Comment
  UCD19084  Kochia scoparia subsp. scoparia Clyde Elmore 1983-7-20 s.n. Contra Costa Contra Costa County. Comment
  POM257060  Koeleria macrantha Virginia Long 1933-6-14 223 a Contra Costa Mt Diablo; On top of grassy ridge between Curry-Cave trail canyon and W. fork Comment
  UC691220  Koeleria macrantha Mary L. Bowerman 1934-6-9 2549 Contra Costa Fossil Ridge s of 1700 foot point Mount Diablo (Mount Diablo); , Fossil Ridge Comment
  UCD85839  Koeleria macrantha P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. Comment
  POM300737  Koeleria macrantha Mary L. Bowerman 1935-5-8 2974 a Contra Costa Knoll on spur south of Pioneer Camp. (20 feet higher than the upper edge of the chaparral) 762 Comment
  SEINET10607073  Koeleria macrantha Virginia E. Long 1933-6-14 Long 223 a Contra Costa Mt. Diablo. On top of grassy ridge between Curry Cave trail canyon & W. fork. 457 Comment
  UC1050315  Kolkwitzia amabilis N. Floy Bracelin 1943-7-4 1584 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CAS-BOT-BC499188  Kopsiopsis strobilacea W. W. Carruth no date on label s.n. Contra Costa Moraga Valley Comment
  JEPS99525  Lactuca saligna Mary L. Bowerman 1975-9-14 Contra Costa Mount Diablo. By hillside near Chase Pond. Comment
  UC691804  Lactuca saligna Mary L. Bowerman 1932-11-26 1676 Contra Costa Maple Spring; Mount Diablo Comment
  JEPS3931  Lactuca virosa John Thomas Howell 1943-8-22 19310 Contra Costa near head of San Leandro Creek Canyon 243 Comment
  UC2028521  Lactuca virosa Barbara Ertter 1997-9-14 15804 Contra Costa WSW base of Mount Diablo, creek NW of Macedo Ranch between Pine Ridge and lowers Wall Point Road. Comment
  UC691444  Lactuca virosa J. T. Howell 1942-7-1 17040 Contra Costa Comment
  CAS-BOT-BC341476  Lagophylla ramosissima Mary L. Bowerman 1930-6-5 262 Contra Costa Mount Diablo. North road 5.8 miles from North Gate 457 Comment
  UC691493  Lagophylla ramosissima Mary L. Bowerman 1933-5-4 1992 Contra Costa Fossil Ridge Comment
  CAS-BOT-BC412727  Lastarriaea coriacea Dr. A. Kellogg; W. G. W. Harford 1868-1-1 865 Contra Costa Antioch Comment
  JEPS111658  Lasthenia californica A. G. Murdock 2005-3-25 229 Contra Costa Hercules - Carbon 50 Comment
  CAS-BOT-BC324458  Lasthenia conjugens Barrett Anderson; Thomas Scofield 1995-4-25 4553 Contra Costa Along Highway 4 approximately 2.38 km east of Interestate 80 Highway 4 interchange near Rodeo Comment
  UC1142637  Lasthenia conjugens Edw. L. Greene 1887-4-17 Contra Costa Antioch Comment
  UC33073  Lasthenia conjugens Edw. L. Greene 1887-4-17 Contra Costa Antioch Comment
  UC1363770  Lasthenia ferrisiae Robert Ornduff 1958-4-23 4945 Contra Costa 0.9 mi e junction of Bixler Road and Highway 4 (n of Hwy 4, n of Byron) Comment
  CAS-BOT-BC353334  Lasthenia fremontii K. Curran April (Year not stated). s.n. Contra Costa Suisun. Comment
  JEPS17885  Lasthenia fremontii Rimo Bacigalupi with G. T. Robbins 1956-3-26 5533 Contra Costa just s of S. P. R. R. crossing on rd. to Bethany 2.5 mi s of Byron; Head of Italian Slough 6 Comment
  UC650552  Lasthenia fremontii Ira L. Wiggins 1930-4-17 4579 Contra Costa .25 mi. s Byron Comment
  JEPS116855  Lasthenia glaberrima David Gowen 2007-4-16 675 Contra Costa Briones Regional Park in the northern Maricich Lagoon. Comment
  UC2070484  Lasthenia glaberrima Barbara Ertter with Joanne Kerbavaz and Alan Whittemore 2003-6-11 18215 Contra Costa Turtle Rock Ponds on east side Pine Creek, below Diablo Ranch on west side Mount Diablo. Comment
  CHSC106711  Lasthenia glabrata subsp. glabrata Barbara Ertter; Chris Thayer 1991-6-16 11705 Contra Costa ca. 1/2 mile north of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park, perennial grassland above oak stringer, just below right on NE-facing slope. 457 Comment
  SD5689  Lasthenia microglossa K. Curran May 1884 Contra Costa Antioch. Comment
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Mar 10 2008
  CAS-BOT-BC361121  Lasthenia microglossa Kellogg 1870-1-1 s.n. Contra Costa Antioch Comment
  UC130780  Lasthenia minor T. S. Brandegee 1892-5-1 Contra Costa Antioch Comment
  UC30472  Lasthenia minor F. T. Bioletti 1892-1 Contra Costa Byron Comment
  JEPS81844  Lasthenia platycarpha Rimo Bacigalupi with Paul C. Hutchinson and John Weiler 1959-3-10 6967 Contra Costa 1 mi se Byron (in fields e of Byron road) 6 Comment
  CAS-BOT-BC205012  Lathyrus jepsonii var. jepsonii Alice Eastwood 1915-6-21 4729 Contra Costa San Leandro Comment
  CAS-BOT-BC205013  Lathyrus jepsonii var. jepsonii Walter Knight; Brian Atwater; Joanne Dean; Rolf Bensler; Bryan Mortensen 1979-4-13 3362 Contra Costa Crooked Slough, Browns Island Comment
  CDA27149  Lathyrus vestitus D. G. Kelch 2007-4-29 7 .205 Contra Costa Carquinez Strait; Richmond; Chevy s Hill N. Hilltop Dr. Comment
  POM19374  Lathyrus vestitus subsp. vestitus W. L. Jepson 1891-6-9 6801 Contra Costa Contra Costa Comment
  UC15372  Lathyrus vestitus var. vestitus W. L. Jepson Contra Costa Fish Ranch Comment
  UCR265179  Lavatera cretica Barbara Ertter 1991-5-12 9813 Contra Costa Central Coast, Point Isabel Regional Shoreline in southwest corner of El Cerrito, on San Francisco Bay; along old railroad right-of-way between bay and Salicornia marsh. 4 Comment
  CHSC23345  Layia chrysanthemoides Willis Ball 1975-3-22 497 Contra Costa In area #5. Field ca. 200 yds due e of main boat ramp. 36 Comment
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May 24 2013
  UC407377  Layia chrysanthemoides Ira L. Wiggins 1930-4-17 4572 Contra Costa .25 mi s Byron Comment
  CAS-BOT-BC323906  Layia chrysanthemoides Ira L. Wiggins 1930-4-17 4572 Contra Costa 1/4 mile S of Byron Comment
  UC589705  Layia gaillardioides Douglas Horn 1938-4-24 61 Contra Costa w of Orinda 274 Comment
  UC691554  Layia gaillardioides Mary L. Bowerman 1932-4-16 1351 Contra Costa n of Eagle Point; Eagle Point Ridge 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
  UC89223  Layia gaillardioides M. K. Curran Contra Costa Mt. Diablo Comment
  CAS-BOT-BC321078  Layia glandulosa Alice Eastwood; John Thomas Howell 1936-4-19 2150 Contra Costa Antioch sand hills Comment
  UC30623  Layia glandulosa unknown 1900-4-5 Contra Costa Oakley Comment
  UC468861  Layia glandulosa W. C. Blasdale 1893-5-13 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
  UC761879  Layia glandulosa R. F. Hoover 1937-5-14 2115 Contra Costa Comment
  POM53349  Layia glandulosa subsp. glandulosa C. F. Baker 1903-4-27 2939 Contra Costa Antioch Comment
  CAS-BOT-BC327244  Layia hieracioides K. Curran 1883-5-1 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC327247  Layia hieracioides David D. Keck 1941-6-5 5307 Contra Costa Berkeley Hills, Fish Creek Rd., 0.25 mi W of E. portal of Broadway Tunnel 335 Comment
  UC1069769  Layia platyglossa C. M. Belshaw 1936-5-8 2064 Contra Costa se slope Mt. Diablo; Mt. Diablo Quad. Comment
  UC691491  Layia platyglossa Mary L. Bowerman 1933-6-7 2261 Contra Costa North Peak Ridge Mount Diablo, North Peak Ridge 1021 Comment
  UC75378  Layia platyglossa unknown 1903-5-28 2874 Contra Costa Antioch Comment
  CAS-BOT-BC377912  Layia platyglossa J. Clausen 1936-4-18 1174 Contra Costa Summit Mt. Diablo along S. side of trail to Devil's Pulpit Comment
  CAS-BOT-BC377913  Layia platyglossa Kellogg; Brannan 1880-4-23 s.n. Contra Costa Antioch Comment
  POM53355  Layia platyglossa subsp. platyglossa C. F. Baker 1903-5-28 2874 Contra Costa Antioch. Comment
  UC2028427  Leersia oryzoides Barbara Ertter 1996-9-19 15297 Contra Costa Antioch Marina, edge of Dow Marsh lands Comment
  UC2027754  Lemna gibba Barbara Ertter 1996-11-24 15413 Contra Costa Southwest side of Mount Diablo, streamlet east of Macedo Ranch trailhead. Comment
  RSA83333  Lepechinia calycina F. W. Peirson 1923-7-1 3832 Contra Costa Mt. Diablo Comment
  UC1124480  Lepechinia calycina R. W. Lundh 1932-8-25 141 Contra Costa Mount Diablo 822 Comment
  CDA43402  Lepidium acutidens Michael Pitcairn & Dean Kelch 2015-3-6 s.n. Contra Costa South end of the Byron Airport. Comment
  CHSC67909  Lepidium dictyotum James D. Jokerst; Barbara Ertter, Dave Magney 1989-4-5 3080 Contra Costa West and adjacent to Clifton Court Forebay, E of Bryon Hwy. and Italian Slough. 3 Comment
  CHSC69637  Lepidium dictyotum var. dictyotum James D. Jokerst 1989-3-28 3051 B Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  JEPS100082  Lepidium latifolium A. Langston 2003-6-6 AL 34 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1535348  Lepidium latifolium Ernest L. Gordon 1987-6-1 Contra Costa Martinez Regional Shoreline, across from the railroad depot, in park Martinez Regional Shoreline Comment
  UC1606361  Lepidium latifolium Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10717 Contra Costa n of Pittsburg (w-most point opposite Pittsburg marina, near confluence of Sacramento and San Joaquin rivers); Browns Island Comment
  UC1607701  Lepidium latifolium Barbara Ertter 1991-5-12 9810 Contra Costa sw corner El Cerrito (Point Isabel Regional Shoreline, n of park); San Francisco Bay, Point Isabel Regional Shoreline Comment
  CAS-BOT-BC89716  Lepidium latifolium Walter Knight 1978-8-12 3231 Contra Costa Ca. 0.8 mile east of Point Pinole. Comment
  CAS-BOT-BC89717  Lepidium latifolium Walter Knight; Harry Reeves 1979-8-21 3411 Contra Costa East of reservoir. Contra Loma Regional Park, Antioch. 22 Comment
  NY76535  Lepidium latifolium B. J. Ertter 1991-5-12 9810 Contra Costa Point Isabel Regional Shoreline in southwest corner of El Cerrito, on San Francisco Bay Comment
  RSA759893  Lepidium latifolium Barbara Ertter, CNPS 1990-9-16 9649 Contra Costa Southeast side of Holland Track northeast of Brentwood, edge of parking area for marina near field. Comment
  UC2070650  Lepidium latifolium Barbara Ertter 2002-8-24 18021 Contra Costa Dunn Creek south of Mount Diablo Mine property on NE base of Mount Diablo. Comment
  JEPS53652  Lepidium latipes W. L. Jepson 1931-4-5 15720 Contra Costa Nortonville 396 Comment
  UC691078  Lepidium latipes Mary L. Bowerman 1933-4-15 1846 Contra Costa canyon s Arroyo del Cerro; Mount Diablo Comment
  SD131818  Lepidium nitidum Barbara Ertter, Jokerst and Magney 1989-4-5 8123 Contra Costa Alkali sink west and adjacent to Clifton Court Forebay, ca. 15 air miles southwest of Stockton Comment
  CAS-BOT-BC89895  Lepidium nitidum Lewis S. Rose 1933-3-10 33014 Contra Costa Brentwood. Comment
  JEPS53698  Lepidium nitidum W. L. Jepson 1922-4-16 9601 Contra Costa San Pablo Valley Comment
  RSA8344  Lepidium nitidum L. S. Rose 1933-3-29 33045 Contra Costa Pittsburg Comment
  JEPS100081  Lepidium nitidum var. nitidum G. Smick 2003-3-4 GAS 60 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS111855  Lepidium nitidum var. nitidum D. G. Kelch 2003-2-7 03 .37 Contra Costa Franklin Canyon 115 Comment
  CHSC69639  Lepidium nitidum var. oreganum James D. Jokerst 1989-3-28 3051 A Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  UCD115836  Lepidium strictum G. Thomas Robbins 1959-4-26 4006 Contra Costa About 1 mile northeast of Giant and about one-fourth mile north of San Pablo Oil Tank Farm. 7 Comment
  UCD63839  Leptochloa fusca subsp. fascicularis John Thomas Howell 1972-6-29 48944 Contra Costa along Byron Hot Springs Road, southeast of Byron. Comment
  UCD37376  Leptochloa fusca subsp. uninervia Beecher Crampton 1959-10-19 5467 Contra Costa Contra Costa County, 4 miles south of Brentwood, along Vasco Road, just north of its junction with Mount Diablo Road. Comment
  UCD63958  Leptochloa fusca subsp. uninervia Beecher Crampton 1959-10-19 5467 Contra Costa 4 miles south of Brentwood, along Vasco Road, just north of its junction with Mount Diablo Road. Comment
  CAS-BOT-BC226592  Leptosiphon ambiguus Mary L. Bowerman 1934-3-18 2481 Contra Costa Mount Diablo. West of Russelman Park on edge of Donner Canyon Comment
  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
  CAS-BOT-BC324117  Lessingia glandulifera var. glandulifera L. S. Rose 1955-10-17 55185 Contra Costa Antioch 15 Comment
  CAS-BOT-BC324114  Lessingia glandulifera var. glandulifera T. S. Brandegee 1883-1-1 s.n. Contra Costa Antioch Comment
  UCD134062  Lessingia glandulifera var. glandulifera Ann F. Johnson 1978-5-26 AN- 21 Contra Costa San Joaquin River in front of east PG and E tower, Antioch Dunes. Comment
  UC909772  Leymus X multiflorus Milo S. Baker 1950-5-20 12226 Contra Costa roadside between Martinez and Port Costa Comment
  RSA63664  Leymus condensatus Milo S. Baker 1950-5-22 12226 Contra Costa Roadside between Martinez and Pt. Costa Comment
  UCD65585  Leymus triticoides R. Tofsrud 1947-6-12 176 Contra Costa W of Byron about 4 miles in the 'Arroyo de la Canada. Comment
  UCD87775  Leymus triticoides M. Wiesendanger 1926-6-1 1527 Contra Costa Richmond. Comment
  UCD87999  Leymus triticoides H. S. Yates 1933-6-18 s.n. Contra Costa Near Danville. 137 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
  JEPS111522  Ligustrum sinense D. G. Kelch 2005-5-5 05 .207 Contra Costa Point Pinole - Giant Marsh Giant Salt Marsh 3 Comment
  CDA7913  Lilaeopsis masonii D. G. Kelch, A. G. Murdock 2005-5-2 5 .297 Contra Costa Carquinez Strait; Glen Cove Shore. Comment
  JEPS17888  Limnanthes douglasii subsp. rosea Rimo Bacigalupi with G. T. Robbins 1956-3-26 5530 Contra Costa bottom-lands about 2 1/2 mi s Byron (just s of S.P.R.R. crossing of road to Bethany, near head of Italian Slough) 6 Comment
  UC615175  Limnanthes douglasii subsp. rosea Beryl O. Schreiber 1932-3-27 158 Contra Costa Byron Hot Springs Comment
  UC1563862  Limonium californicum Barbara Ertter with Elizabeth Neese 1988-10-15 7981 Contra Costa El Cerrito; marsh w of I-580, w side along Rydin Road n of Central Ave. Comment
  UC1736382  Limosella acaulis Dean W. Taylor 1992-4-16 12393 Contra Costa S of Byron Hot Springs, in swale draining on E margin of NE1/4 SE1/4 Section 34 45 Comment
  JEPS108215  Linanthus ambiguus David Gowen 2005-4-26 268 Contra Costa Mt. Diablo State Park. Clayton Oaks Rd. (dirt), which follows the ridge east of Donner Canyon, ca 20 feet south of junction with Bruce Lee Trail. Comment
  UC691638  Linanthus pygmaeus subsp. continentalis Mary L. Bowerman 1933-5-25 2178 Contra Costa w end of s-face Oyster Ridge 396 Comment
  UC1818935  Linaria maroccana Barbara Ertter, Mary Bowerman et al. 1995-5-7 14028 Contra Costa Three-Springs Trail on northeast side of Mt. Diablo southeast of Clayton, along road thru annual grassland with scattered blue oak south of Marsh Cr. Rd summit. 304 Comment
  POM138838  Linum grandiflorum C. F. Baker 1903-4-28 s.n. Contra Costa Byron? Comment
  UC198752  Linum lewisii Chesnut and Drew 1889-4-16 Contra Costa Martinez Comment
  JEPS112263  Lithophragma affine D. G. Kelch 2003-4-3 03 .358 Contra Costa Cummings Skyway 134 Comment
  UC1084400  Lithophragma affine G. Thomas Robbins 1937-4-17 128 Contra Costa near Point Richmond Comment
  JEPS108396  Lithophragma affine David Gowen 2005-4-25 265 Contra Costa Mt. Diablo State Park. Prospectors Gap Rd., just east of Prospectors Gap. Comment
  UCSB10858  Lithophragma affine Hayes, Judy 1961-3-29 Contra Costa 1 mile W of Danville on Pixie Lane Comment
  POM203654  Lithophragma affine subsp. affine John T. Howell 1933-5-14 11280 Contra Costa Hills east of St. Mary s college Comment
  CDA25419  Lithophragma heterophyllum A. G. Murdock, D. G. Kelch 2004-4-3 257 Contra Costa Vaca Canyon. Comment
  UC1088544  Lithophragma heterophyllum John H. Weiler 1959-1 5944 Contra Costa along Bear Creek Road Comment
  UC1819053  Logfia filaginoides Barbara Ertter, Chris Thayer 1995-4-25 13994 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd. on north side Black Hawk Ridge. 548 Comment
  UC691820  Logfia filaginoides Mary L. Bowerman 1931-5-16 854 Contra Costa s side Meridian Peak summit; Mount Diablo, Meridian Peak summit Comment
  UC1795896  Logfia gallica Barbara Ertter, Chris Thayer 1995-4-25 13992 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Devil's Slide area of Sycamore Canyon, roadside thru chaparral zone. 304 Comment
  CDA15269  Lolium multiflorum G. F. Hrusa, D. Crowe 1998-5-8 14400 Contra Costa Sacramento Delta; Moist, areas within disturbed grasslands at E end of Dow Chemical property. Rare form with branched inflorescence. Perennial? Comment
  JEPS99986  Lolium multiflorum S. O'Neil 2003-3-11 SEO 17 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC269060  Lolium perenne J. W. Congdon 1889-6-19 s.n. Contra Costa Byron Springs Comment
  CAS-BOT-BC269051  Lolium perenne Mary L. Bowerman 1935-5-3 2967 Contra Costa Mount Diablo. Sloan Road 487 Comment
  UCD66482  Lolium temulentum Beecher Crampton 1956-5-14 3408 Contra Costa Southern boundary of Mt. Diablo State Park. Comment
  CAS-BOT-BC271057  Lolium temulentum Mary L. Bowerman 1933-5-17 2096 Contra Costa Branch of Curry Canyon due south of Olafsons barn, Mount Diablo Comment
  UCD127623  Lomatium dasycarpum P. B. Kennedy 1925-4-26 s.n. Contra Costa Banks above road to Sycamore Canon, Mt. Diablo. Comment
  UC1084396  Lomatium dasycarpum subsp. dasycarpum G. Thomas Robbins 1937-4-17 137 Contra Costa near Point Richmond Comment
  UC691426  Lomatium macrocarpum Mary L. Bowerman 1935-4-17 2837 Contra Costa w. rd. 2 mi. from entrance Mt. Diablo (ridge w. of chaparral) 289 Comment
  UC2027801  Lomatium macrocarpum Barbara Ertter with Holly Forbes 1997-4-20 15558 Contra Costa North side of Mount Diablo, north end of Eagle Peak Ridge on Mitchell Rock Trail between Mitchell Rock and Twin Peaks. Comment
  UC692350  Lomatium nudicaule Mary L. Bowerman 1933-6-7 2251 Contra Costa Mt. Diablo, North Peak Saddle Comment
  UCSB4606  Lomatium nudicaule Keator, Glenn 1959-7-1 Contra Costa 1/4 mile above Laurel camp on Mt. Diablo Comment
  UC691423  Lomatium utriculatum Mary L. Bowerman 1933-5-4 1997 Contra Costa Fossil Ridge, E end Mount Diablo Comment
  POM181453  Lonicera involucrata Ira L. Higgins 1930-4-18 4594 Contra Costa Levee, east end of Jersey Island. Comment
  RSA666356  Lonicera japonica Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10694 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento and San Joaquin rivers opposite Pittsburg Marina; west end of island. Comment
  UC1618284  Lonicera japonica Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10694 Contra Costa opposite Pittsburg Marina (in center of w end of Browns Island n of Pittsburg near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  UCD137367  Lonicera subspicata M. Wiesendanger 1925-5-1 1480 Contra Costa San Miguel. Comment
  JEPS12852  Lonicera subspicata var. denudata W. L. Jepson 1920-9-6 9080 Contra Costa Donner Canyon, on ridge towards high spring under saddle Mt. Diablo Comment
  JEPS99523  Lonicera subspicata var. denudata Mary L. Bowerman 1975-6-7 Contra Costa Mount Diablo. By Big Spring fire rd. E of Murchio Gap. Comment
  UC691484  Lonicera subspicata var. denudata Mary L. Bowerman 1935-5-25 3074 Contra Costa Rhine Canyon Mount Diablo 944 Comment
  UC691485  Lonicera subspicata var. denudata Mary L. Bowerman 1931-6-4 922 Contra Costa summit Mount Diablo (on n face) Comment
  CDA15230  Lotus corniculatus G. F. Hrusa, D. Crowe 1998-5-8 14359 Contra Costa Sacramento Delta; Adjacent to Dow Chemical plant at Pittsburg. Comment
  POM161235  Lotus crassifolius Rimo Bacigalupi 1926-4-30 1350 Contra Costa Summit of Mt Diablo. Comment
Read comments
Nov 9 2011
  UC692526  Lotus micranthus Mary L. Bowerman 1931-3-29 616 Contra Costa East Cave Point Ridge Mount Diablo Comment
  UC692527  Lotus micranthus Mary L. Bowerman 1932-4-9 1325 Contra Costa Inner Black Hills, s spur on meridian Mount Diablo Comment
  UC692269  Lotus purshianus var. purshianus Mary L. Bowerman 1938-6-14 3676 Contra Costa 1 mi from North Gate (North Road); Mount Diablo 121 Comment
  JEPS21976  Lotus tenuis G. Thomas Robbins 1958-5-24 3837 Contra Costa at corner of S. 28th St. and Hoffman Blvd.; Richmond Comment
  UC692262  Lotus wrangelianus Mary L. Bowerman 1931-3-14 572 Contra Costa e side Windy Point; Mount Diablo Comment
  POM300705  Lotus wrangelianus Mary L. Bowerman 1933-5-2 1949 Contra Costa Below Pioneer Camp; Mount Diablo. 762 Comment
  UC1051078  Luculia intermedia N. Floy Bracelin 1944-10-29 2821 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC16053  Lupinus albifrons J. Burtt Davy 1895-4-7 873 Contra Costa Antioch Comment
  UC2042499  Lupinus albifrons Barbara Kelly 2011-4-18 Contra Costa Tilden Regional Park, along Lomas Cantadas Rd., on a steep, rocky slope above the road. Comment
  CAS-BOT-BC201364  Lupinus albifrons var. albifrons Alice Eastwood 1915-5-30 4510 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC201367  Lupinus albifrons var. albifrons Peter Rubtzoff 1954-9-14 1761 Contra Costa Along lower San Joaquin River, east of Antioch Comment
  CAS-BOT-BC201377  Lupinus albifrons var. albifrons James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  POM10982  Lupinus albifrons var. albifrons C. F. Baker 1903-4-25 2823 Contra Costa Antioch. Comment
  UC692521  Lupinus albifrons var. albifrons Mary L. Bowerman 1931-4-25 785 Contra Costa between junction of one-way roads and top Meridian Peak summit (Mount Diablo); , Meridian Peak summit 1158 Comment
  OBI49327  Lupinus albifrons var. collinus Joseph Andorfer Ewan 1934-3-10 8645 Contra Costa 2 mi below Orinda road bridge, Wildcat Cyn Comment
  RSA600828  Lupinus albifrons var. collinus Joseph A. Ewan 1934-3-10 8645 Contra Costa San Pablo Ridge: Wildcat Canyon; 2 miles below Orinda road bridge.. . 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
  UC127056  Lupinus arboreus Ivar Tidestrom 1893-4-15 Contra Costa Sheep Island Comment
  UC1948937  Lupinus arboreus William J. Ferlatte, L. Maynard Moe 1970-4-27 1262 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC2032827  Lupinus arboreus Doran, Andrew Scott 2012-3-20 697 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  JEPS112354  Lupinus bicolor Dean G. Kelch and Andrew G. Murdock 2004-3-12 04 .029 Contra Costa Pinole Valley, County: Contra Costa; Hillside and canyon above Wright Road. Off of Pinole Valley Road. Contra Coasta County, CA. Comment
  JEPS75466  Lupinus bicolor P. F. Yorks 1975-4-27 386 Contra Costa on Hampton Road ca 1.6 km s Bear Creek Road (n of Briones Reservoir, in Hampton Road Natural Reserve); Hampton Road Natural Reserve, n of Briones Reservoir 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
  UC149964  Lupinus bicolor Katharine Brandegee 1911-7-6 Contra Costa Pt. Isabel Comment
  UC1584851  Lupinus bicolor Jerry Powell 1989-4-6 1561 Contra Costa Point Molate Comment
  RSA203627  Lupinus bicolor subsp. tridentatus J. T. Howell 1933-5-14 11250 Contra Costa Hills east of St. Marys college Comment
  SEINET10484947  Lupinus bicolor subsp. tridentatus Charles Piper Smith 1922-4-15 Smith 3487 Contra Costa Los medanos - southern pacific. Comment
  JEPS12790  Lupinus chamissonis Rimo Bacigalupi with G. T. Robbins 1955-5-4 4980 Contra Costa just e Antioch (along San Joaquin River front); , e of Antioch 9 Comment
Read comments
May 25 2007
  UCD107012  Lupinus chamissonis Beecher Crampton 1973-3-26 8907 Contra Costa 2 miles S.E. of Oakley. Comment
  POM181434  Lupinus densiflorus var. aureus Ira L. Higgins 1930-4-17 4568 Contra Costa Hillsides near Mountain House, Altamont Pass. Comment
  UC692523  Lupinus formosus Mary L. Bowerman 1931-10-5 1055 Contra Costa Marsh Creek at Curry Canyon Mount Diablo; , Marsh Creek at Curry Canyon 231 Comment
  UCD107777  Lupinus formosus L. S. Smith 1916-5-10 s.n. Contra Costa Grand View Terrace - San Pablo. Comment
  JEPS112326  Lupinus formosus var. formosus Dean G. Kelch and Andrew G. Murdock 2004-9-2 04 .329B Contra Costa McEwen Road; County: Contra Costa; McEwen Road from Port of Costa - I-4 near summit of Road. Contra Costa County CA. Comment
  JEPS112361  Lupinus formosus var. formosus Dean G. Kelch and Andrew G. Murdock 2004-5-28 287 Contra Costa Pinole Peak; County: Contra Costa. Comment
  JEPS111073  Lupinus formosus var. formosus Lee Echols 2003-7-7 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
  RSA0026155  Lupinus formosus var. formosus Barbara Ertter, J. Travis Columbus 1990-6-10 9116 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill.; grassy hill SE of Alhambra Valley staging area. 152 Comment
  SD103748  Lupinus formosus var. formosus Walter Knight, Irja Knight 1979-5-31 3396 Contra Costa Pasture at southeast corner Appian Way and I-80, City of Pinole. Comment
  UCD108697  Lupinus microcarpus var. densiflorus August Hartman 1960-4-19 15 D Contra Costa North Gate Road, Mt. Diablo. 304 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
  UC1562852  Lupinus microcarpus var. microcarpus Barbara Ertter with Elizabeth Neese 1988-4-24 7453 Contra Costa between and parallel to Nortonville and Somersville roads Black Diamond Mines Regional Preserve sw Antioch; Black Diamond Mines Regional Preserve Comment
  UC201008  Lupinus microcarpus var. microcarpus Katharine Brandegee 1918-6-16 Contra Costa Richmond Annex; El Dorado St. Comment
  UC201018  Lupinus microcarpus var. microcarpus Katharine Brandegee 1918-6-16 Contra Costa near Vigorit Powder works (R.R. embankment) Comment
  UC201099  Lupinus microcarpus var. microcarpus Katharine Brandegee Contra Costa Richmond Annex Comment
  UC692572  Lupinus microcarpus var. microcarpus Mary L. Bowerman 1931-4-4 657 Contra Costa North Road 4.5 mi from North Gate Mount Diablo (bank above road); Mount Diablo Comment
  JEPS65413  Lupinus pachylobus E. L. Greene 1887-4-15 Contra Costa Briones Bills; Briones Hills Comment
  UC2070441  Lupinus pachylobus Barbara Ertter with Linda Vorobik 2002-4-6 17823 Contra Costa South side of Mount Diablo, roadside NW of Curry Point trailhead. Comment
  SEINET10486145  Lupinus polycarpus Frenkel 1964-3-27 FRENKEL 409 Contra Costa On giant road, .4 mi n of atsf rr crossing, richmond. 15 Comment
  JEPS25128  Lupinus succulentus G. Thomas Robbins 1959-4-18 3993 Contra Costa road fill along Western Drive near and n Pt. Richmond (western base of Potrero Hills, Richmond); Richmond, n of Pt. Richmond, western base Potraro Hills 4 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
  UC72374  Luzula macrantha Harley P. Chandler 1901-3-22 851 Contra Costa Martinez Comment
  CDA20732  Lycium chinense J. Deviney 2006-7-5 PDR 1374005 Contra Costa Viano Vineyards, 150 Morello Ave., Martinez. Comment
  UC1607619  Lycopus asper Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10691 Contra Costa w. end of Browns Isl. n. of Pittsburg (near confluence of Sacramento & San Joaquin Rivers, opposite Pittsburg Marina); Browns Isl. Comment
  RSA0014823  Lythrum californicum David Gowen 2006-8-9 660 Contra Costa Mount Diablo State Park at Lower Moses Rock Spring. 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
  UC2028023  Madia elegans Barbara Ertter 1997-9-14 15811 Contra Costa Southwest side of Mount Diablo, Secret Trail at head of Pine Canyon. Comment
  POM301049  Madia elegans subsp. elegans Mary L. Bowerman 1936-9-10 3542 Contra Costa Mount Diablo: Donner Canyon 335 Comment
  UC691549  Madia exigua Mary L. Bowerman 1932-4-27 1400 Contra Costa canyon w Riggs Canyon (s face Oyster Ridge); Mount Diablo 350 Comment
  CAS-BOT-BC344328  Madia exigua T. S. Brandegee 1885-5-1 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC342981  Madia gracilis Barrett Anderson 1987-4-30 3499 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD 125 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
  CHSC114300  Madia gracilis D. G. Kelch; D. A. Weinstein 2011-5-28 11 .540 Contra Costa Carquinez Strait Region.: W. of Martinez. N of end of Hillside Pl. 183 Comment
  UC517457  Madia gracilis John Thomas Howell 1933-5-14 11266 Contra Costa hills e St. Mary's College Comment
  UC697160  Madia gracilis Mary L. Bowerman 1933-5-8 2018 Contra Costa near crest Fossil Ridge (on n side by side road); Mount Diablo Comment
  UCD149006  Madia gracilis D. Kelch 2009-5-23 09. 293 Contra Costa Mt. Tamalpais. Ocean View Trail. 114 Comment
  UC2029027  Madia gracilis Barbara Ertter 2002-6-16 17951 Contra Costa Richmond Field Station (UC-Berkeley). Comment
  CAS-BOT-BC343586  Madia sativa L. R. Abrams 1916-7-1 5734 Contra Costa Martinez Comment
  CDA29210  Madia sativa D. G. Kelch 2008-6-15 8 .247 Contra Costa Carquinez Strait; Crockett hills, S of Cummings Skyway, W of Crockett Blvd. Comment
  UC1555376  Madia sativa Jerry Powell 1988-6-28 1540 Contra Costa area along railroad west Richmond, Point Molate Comment
  UC1861832  Madia sativa Barbara Ertter with Richard Rabeler 1994-6-18 12838 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
  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
  UC692612  Malacothamnus fremontii Mary L. Bowerman 1930-6-18 353 Contra Costa Mount Diablo 822 Comment
  POM301021  Malacothamnus hallii Mary L. Bowerman 1933-6-3 2223 Contra Costa 2 miles by road from North Gate Comment
  UC1280806  Malacothamnus hallii H. E. McMinn and E. Maino 1931-4-11 123 Contra Costa Mount Diablo Comment
  UC692619  Malacothamnus hallii Mary L. Bowerman 1936-8-25 3534 Contra Costa n upper farm (on Cowell Cement property.); Mount Diablo, west side Lime Ridge 137 Comment
  RSA0116396  Malacothamnus hallii Lewis S. Rose 1954-6-29 54082 Contra Costa Mt. Diablo 2.5 mi n. of Turtle Rock. 183 Comment
  SEINET5047666  Malacothamnus hallii Unknown 1916-5-30 301 Contra Costa Mt. Diablo, Contra Costa County, on the westerly side N of Pine Canon, Comment
  UC1795741  Malacothamnus hallii Barbara Ertter, Tom Delendick 1996-5-2 14610 Contra Costa Mount Diablo State Park, North Gate Rd. near base of Long Ridge, at old developed spring, mixed scrub. 182 Comment
  CAS-BOT-BC345370  Malacothrix clevelandii Brandegee No date on label s.n. Contra Costa Antioch Comment
  CAS-BOT-BC345453  Malacothrix coulteri Alice Eastwood 1914-3-14 3816 Contra Costa Byron Springs Comment
  UC831151  Malacothrix floccifera Mrs. E. C. Sutliffe 1920-5-30 Contra Costa Mt. Diablo Comment
  JEPS111543  Malva nicaeensis D. G. Kelch 2004-5-21 04 .220 Contra Costa Crockett - Edwards Canyon Edwards Creek EBRP Staging Area near Greenhouse 24 Comment
  UCD150879  Malva nicaeensis James A. Neilson Jr. 1972-11-2 3619 Contra Costa Walnut Creek drainage. Elevation estimated in Google Earth by label maker. 1 Comment
  UCD116680  Malva sylvestris Herbert L. Mason 1952-6-10 s.n. Contra Costa Waste land near Dwinelle Hall, University of California, Berkeley. Comment
  UC871380  Malvella leprosa Lewis S. Rose 1938-10-28 38310 Contra Costa Byron 3 Comment
  UCD150880  Malvella leprosa James A. Neilson Jr. 1972-11-2 3618 Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 1 Comment
  RSA22265  Malvella leprosa L. S. Rose 1938-10-28 38310 Contra Costa Byron 3 Comment
  CHSC100809  Marah fabacea R. A. Schlising; Anna Eagle 1962-5-29 2281 Contra Costa Roadside. Comment
  JEPS75503  Marah fabacea P. F. Yorks 1974-2-18 110 Contra Costa ca. 1.4 km s Bear Creek Road (on Hampton Road, n of Briones Reservoir); Hapmton Road Natural Reserve 180 Comment
  HSC7016  Marah fabacea Greg Bos 1963-3-9 29 Contra Costa Pinole Valley Rd., SE of Pinole 61 Comment
  CHSC46895  Marah oregana R. A. Schlising 1964-6-5 2715 Contra Costa Oakland Hills, along Grizzly Peak Blvd. Comment
Read comments
Jun 3 2014
  UC691472  Marrubium vulgare Mary L. Bowerman 1935-9-13 3341 Contra Costa Alder Spring Mount Diablo; , Alder Spring Comment
  CHSC23343  Matricaria discoidea Willis Ball 1975-3-26 507 Contra Costa Contra Loma Regional Park. In area #1. All around the restroom facilities at s end of lake. 30 Comment
  JEPS37068  Matricaria discoidea W. L. Jepson 1922-5-18 9647 Contra Costa Berkeley Comment
  CAS-BOT-BC348048  Matricaria discoidea R. E. Frenkel 1963-5-27 208 Contra Costa On Morgan Territory Road, 0.2 mile south of summit 637 Comment
  CAS-BOT-BC348259  Matricaria occidentalis R. E. Frenkel 1963-5-15 199 Contra Costa East of Bixler Road between Marsh Creek Road and California Hwy. 4 in Byron Tract Comment
  RSA215988  Matricaria occidentalis R. E. Frenkel 1963-5-15 197 Contra Costa Grazed field east of Bixler Road between Marsh Creek Road and California Highway 4 in Byron Tract Comment
  UC1103019  Meconella californica J. P. Tracy 1903-4-18 1796 Contra Costa East slope beyond Bald Peak, Berkeley Hills 304 Comment
Read comments
May 24 2011
  JEPS112340  Medicago arabica Dean G. Kelch and Andrew G. Murdock 2004-5-2 04 .169 Contra Costa Crockett - Edwards Canyon; County: Contra Coasta; Edwards Canyon, Crockett, Contra Coasta County, CA. Comment
  CHSC116603  Medicago polymorpha var. brevispina Lowell Ahart; Josephine Guardino 2016-4-19 20763 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. 1.8 miles (air) northwest of LosVaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  CDA4230  Medicago sativa D. G. Kelch, A. G. Murdock 2004-5-21 4 .219 Contra Costa Carquinez Strait Region; Cummings Skyway. Exit from I-80 to Cummings Skyway. Comment
  POM300624  Melica californica Mary L. Bowerman 1935-5-25 3070 Contra Costa Meridian Peak south of the summit (east of the hairpin turn on road). Mount Diablo. 1067 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
  SEINET10893688  Melica californica M. Bowerman 1991-5-21 Bowerman s.n. Contra Costa Mount Diablo. Jim White Trail [Deer Flat Rd]. South side of Juniper-Moses Rock Trail near Deer Flat junction. Large silvery patches scattered over S-facing hillside. Comment
  SEINET190972 Image available Melica imperfecta A. A. Beetle 1941-3-28 1723 Contra Costa Near Orinda Comment
  RSA0068496  Melica imperfecta Katie Gallagher, Nick Jensen 2014-4-26 178 Contra Costa Las Trampas Regional Wilderness. 365 Comment
  CDA32524  Melica torreyana D. G. Kelch, Andrew Murdock 2003-3-21 3 .055 Contra Costa Carquinez Strait Region; Martinez; West: Ozol Rock and Scenic Drive. Comment
  JEPS99593  Melica torreyana Mary Bowerman 1994-4-17 Contra Costa Mount Diablo, Donner Canyon by fire road near junction 1st trail to Back Canyon. Comment
  RSA762303  Melica torreyana William J. Ferlatte, L. M. Moe 1970-4-27 1228 Contra Costa San Francisco Bay, Red Rock Island. Comment
  UC1948967  Melica torreyana William J. Ferlatte, L. Maynard Moe 1970-4-27 1249 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC691175  Melica torreyana Mary L. Bowerman 1935-5-22 3044 Contra Costa canyon at n end which heads into saddle w of Twin Peaks Eagle Pt Ridge; Mt. Diablo 350 Comment
  UCD88832  Melica torreyana Beecher Crampton 1956-5-14 3421 Contra Costa 2 miles west of Martinez. Comment
  JEPS99542  Melilotus indicus Mary L. Bowerman 1995-6-4 Contra Costa Mount Diablo, North Gate Rd. Comment
  POM181458  Melilotus indicus I. L. Wiggins 1930-4-18 4599 Contra Costa Jersey Island Comment
  JEPS68927  Mentha spicata Edward Lee 1934-9-30 1221 Contra Costa edge of railroad just se of station Moraga Comment
  POM300997  Mentha spicata Mary L. Bowerman 1938-11-19 3733 Contra Costa Mitchell Canyon (at one of places where stream crosses road) 229 Comment
  UC19565  Mentzelia affinis J. Burtt Davy 1895-4-7 918 Contra Costa Antioch Comment
  UC1950230  Mentzelia affinis Barbara Ertter 1992-3-8 10911 Contra Costa Contra Loma Regional Park; hill ca 1/2 mi SW of reservoir Comment
  UC692698  Mentzelia dispersa Mary L. Bowerman 1930-6-10 305 Contra Costa Mount Diablo, Summit Comment
  UC672665  Mentzelia micrantha H. L. Mason 1928-4-29 4435 Contra Costa Mount Diablo, Sycamore Canyon Comment
  UC692628  Mentzelia micrantha Mary L. Bowerman 1933-5-25 2186 Contra Costa west end of south face (Gully); Mount Diablo, Oyster Ridge 502 Comment
  UC692630  Mentzelia micrantha Mary L. Bowerman 1930-6-10 306 Contra Costa Mount Diablo, Meridian Peak summit Comment
  UCD16073  Microlepia strigosa Glen Holstein 1988-2-12 s. n. Contra Costa California. Contra Costa County: City of Danville. Comment
  CDA33418  Micropus californicus D. G. Kelch 2011-5-28 11 .542 Contra Costa Carquinez Strait Region.; W of Martinez. N of end of Hillside Pl. Comment
  CDA8378  Micropus californicus var. californicus D. G. Kelch, A. G. Murdock 2004-4-25 4 .125 Contra Costa Carquinez Strait Region; Martinez - West: Ozol Rock and Scenic Drive. Hill southwest of large cottonwood. West of Martinez at gated end of Scenic Drive. Comment
  JEPS40605  Micropus californicus var. californicus R. F. Hoover 1936-4-16 972 Contra Costa e slope Bald Peak Comment
  CAS-BOT-BC348364  Micropus californicus var. californicus Paul F. Covel 1939-5-1 s.n. Contra Costa Somersville, east of Clayton Comment
  UC2028976  Micropus californicus var. californicus Barbara Ertter with Kevin Hintsa 2000-5-16 17023 Contra Costa Rock City area on SSW side of Mount Diablo, East Fossil Ridge Trail. Comment
  UC1795751  Microseris douglasii Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14585 Contra Costa Crest of Marsh Creek Road on north side of Mt. Diablo southeast of Clayton, south-facing roadcut opposite entrance to Three Springs Trail; annual grasses and Lotus. 274 Comment
  UC691459  Microseris douglasii subsp. douglasii Mary L. Bowerman 1931-4-4 638 Contra Costa 2 mi by road from North Gate (west entrance); Mount Diablo Comment
  CAS-BOT-BC348885  Microseris douglasii subsp. douglasii Brandegee No date on label s.n. Contra Costa Antioch Comment
  CAS-BOT-BC348896  Microseris douglasii subsp. douglasii Mrs. E. C. Sutliffe 1922-5-1 s.n. Contra Costa Richmond Comment
  UC1618256  Microseris douglasii subsp. douglasii Barbara Ertter 1991-5-5 9783 Contra Costa along spur road from Black Diamond Trail on ridge se Coal Canyon (s of Pittsburg); Black Diamond Mines Regional Preserve 426 Comment
  UC1795746  Microseris douglasii subsp. douglasii Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14241 Contra Costa South side Mount Diablo, edge of open meadow in flats near head of Curry Creek along road to Sheepherders Springs from Sloan Road, clay soil. 426 Comment
  CDA41672  Mimulus aurantiacus D. G. Kelch 2005-6-24 5 .383 Contra Costa Carquinez Strait Region; 5th Street Prairie, Crockett. Comment
  JEPS10223  Mimulus aurantiacus var. aurantiacus W. L. Jepson 1922-5-23 9650 Contra Costa Mt. Diablo Comment
  JEPS75461  Mimulus aurantiacus var. aurantiacus P. F. Yorks 1975-5-31 430 Contra Costa ca. 1.6 km s Bear Creek Road (on Hampton Road, n of Briones Reservoir); Hampton Road Natural Preserve Comment
  RSA15451  Mimulus aurantiacus var. aurantiacus J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville Comment
  UC691496  Mimulus aurantiacus var. aurantiacus Mary L. Bowerman 1930-6-5 253 Contra Costa 5.8 mi from entrance West road (=North Road); Mount Diablo 457 Comment
  UC691614  Mimulus aurantiacus var. aurantiacus Mary L. Bowerman 1931-3-29 622 Contra Costa East Cave Point Ridge Mount Diablo Comment
  UC76079  Mimulus aurantiacus var. aurantiacus Miss Carlotta Case July, 1904 Contra Costa Muir Station Comment
  UC691620  Mimulus rattanii Mary L. Bowerman 1935-6-1 3111 Contra Costa largest ridge between Ransom Point ridge and Mitchell-Pine divide; Mount Diablo 1082 Comment
  UC465577  Minuartia californica Chesnut and Drew 1889-4-16 Contra Costa Martinez Comment
  UC1125779  Minuartia douglasii C. M. Belshaw 1936-5-8 2062 Contra Costa Mt. Diablo Mt. Diablo Quadrangle (se slope, Plot 5) Comment
  CAS-BOT-BC221679  Monardella douglasii John Thomas Howell 1942-7-19 17049 Contra Costa NE. of Deer Flat, Mt. Diablo Comment
  CAS-BOT-BC221680  Monardella douglasii Volney Rattan 1886-6-14 s.n. Contra Costa Mt. Diablo Comment
  UC32611  Monardella douglasii Bolander 2499 Contra Costa Moraga Valley Comment
  CHSC68009  Monardella villosa subsp. villosa James D. Jokerst 1987-6-16 2917 B Contra Costa Livermore Valley, +/- 250 m S of a dirt track. Comment
  CHSC22932  Monolopia major Robert A. Schlising 1962-4-7 2143 Contra Costa Coast Ranges. S of Jct Empire Mine Road and Lone Tree Way; roadside. 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
  CAS-BOT-BC349613  Monolopia major Brandegee No date on label s.n. Contra Costa Antioch Comment
  POM55549  Monolopia major C. F. Baker 1903-4-27 s.n. Contra Costa Byron. Comment
  RSA289444  Monolopia major Dale E. Johnson 1975-4-12 188 Contra Costa West of Byron; 2.6 km (1.6 miles) west of Byron Highway (Brentwood-Bethany road) on Camino Diablo; just west of road summit; near sand quarry Comment
  SEINET11810308  Monolopia major L. S. Rose 1932-1 3280 Contra Costa Byron Comment
  CHSC75113  Montia perfoliata Roger Thom 1987-4-17 1 Contra Costa 3300 block Johnson Rd. in Lafayette. 152 Comment
  UC1198226  Muilla maritima J. P. Tracy 1900-3-24 607 Contra Costa near Point Richmond; Region about San Francisco Bay 3 Comment
  UC1738125  Myosurus D. E. Stone 1957-2-28 14268 A-13 Contra Costa Comment
  CAS-BOT-BC83294  Myosurus minimus Peter H. Raven; D. Stone; H. L. Mason; R. Ornduff; et al. 1957-4-4 10582 Contra Costa 3.0 miles south of Byron. Comment
  CAS-BOT-BC83296  Myosurus minimus Peter H. Raven; D. Stone; H. L. Mason; R. Ornduff; et al. 1957-4-4 10585 Contra Costa 3.0 miles south of Byron. Comment
  CAS-BOT-BC83297  Myosurus minimus Peter H. Raven; D. Stone; H. L. Mason; R. Ornduff; et al. 1957-4-4 10583 Contra Costa 3.0 miles south of Byron. Comment
  UCD96288  Myosurus sessilis H. L. Mason 1952-4-26 14269 Contra Costa 3.5 miles south of Byron. Comment
  UC1777714  Myriophyllum sibiricum M. R. Bell 1950-10-9 Contra Costa near Concord (from stock pond on farm of E. J. Mangini) Comment
  UC1618349  Najas guadalupensis Barbara Ertter, Lynne Hosley 1991-9-22 10825 Contra Costa se side of Lafayette Reservoir in hills sw of Lafayette; Lafayette Reservoir 137 Comment
  JEPS97506  Nassella cernua Stephen W. Edwards 1999-5-24 Contra Costa Long Ridge, Mount Diablo State Park Comment
  CDA32560  Nassella lepida D. G. Kelch, Andrew G. Murdock 2004-4-11 4 .068 Contra Costa Carquinez Strait; Bull Valley Prairie. EBRPD. Between Crockett and Pt. Costa. Comment
  JEPS116788  Nassella lepida David Gowen 2006-6-14 612 Contra Costa Morgan Territory Regional Park; At the NW end of Eagle Trail. 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
  UCD87434  Nassella pulchra A. A. Beetle 1941-3-29 1718 Contra Costa near Orinda. Comment
  JEPS70310  Navarretia atractyloides K. Brandegee 1907-6-16 Contra Costa Judsonville Comment
  UC23481  Navarretia cotulifolia William H. Brewer 1862-5-19 1110 Contra Costa n of Kirker Pass Comment
  SEINET10811232 Image available Navarretia gowenii D. Gowen 2005-5-25 Gowen 390 Contra Costa Lime Ridge Open Space on N. side. Just SE of one of the quarries. Clay soil. 183 Comment
  UC106900  Navarretia hamata subsp. parviloba Katharine Brandegee 1885-5 Contra Costa near Antioch; Judsonville Comment
  UC52780  Navarretia mellita J. Burtt Davy 1895-1 Contra Costa Moraga Pass Oakland Hills, Moraga Pass Comment
  UC856837  Navarretia mellita John Thomas Howell 1938-6-30 13938 Contra Costa Head of Siesta Valley Comment
  CAS-BOT-BC230478  Navarretia nigelliformis var. nigelliformis K. Curran 1884-6-1 s.n. Contra Costa Antioch Comment
  UC2042983  Navarretia pubescens Barbara Ertter with Dan Norris 1998-6-18 16216 Contra Costa Rock City area on south side of Mount Diablo, trail to Artist Point Comment
  SEINET3696157 Image available Navarretia squarrosa Lewis S. Rose 1934-6-18 34288 Contra Costa Berkeley Hills. Comment
  UCD48695  Navarretia squarrosa B. Crampton 1950-7-22 621 Contra Costa Common on a level field in hard packed soil near Santa Fe Railroad tracks, 1 mile north of Richmond, Contra Costa County, California. Comment
  CDA1155  Nemophila heterophylla D. G. Kelch, Andrew Murdock 2003-3-21 3 .056 Contra Costa Carquinez Strait Region; Martinez; West: Ozol Rock and Scenic Drive. Comment
  JEPS111835  Nemophila heterophylla D. G. Kelch 2003-3-21 03 .56 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 40 Comment
  JEPS49756  Nemophila heterophylla Rimo Bacigalupi, and Alice Howard, and Paul Hutchison 1967-3-29 9220 Contra Costa on w slope Las Trampas Ridge Upper reaches Bolinger Canyon, w slope Las Trampas Ridge (Upper reaches of Bolinger Canyon) 381 Comment
  UC880873  Nemophila heterophylla Lewis S. Rose 1941-5-15 41238 Contra Costa summit Mt. Diablo 1188 Comment
  UC67129  Nemophila heterophylla Harley P. Chandler 1900-3-23 580 A Contra Costa Briones Valley , Briones Valley (Region of San Francisco Bay) Comment
  UC24234  Nemophila menziesii J. Burtt Davy 1895-4-7 875 Contra Costa Antioch Comment
  UC880892  Nemophila menziesii Lewis S. Rose 1941-3-13 41029 Contra Costa 3 mi w Byron; w of Byron 30 Comment
  JEPS111846  Nemophila menziesii var. menziesii D. G. Kelch 2005-3-25 05 .84 Contra Costa Pinole Peak Fernandez Ranch. West of Christie Road. South of I-4 (behind golf course) and North of Pinole Peak 250 Comment
  CAS-BOT-BC515974  Nemophila parviflora var. parviflora Barrett Anderson 1987-4-30 3498 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD 125 Comment
  UC2029051  Nemophila pedunculata Barbara Ertter 2000-3-30 16903 Contra Costa North base of Mount Diablo, lower Mitchell Canyon ca 1.5 miles from trailhead. Comment
  CDA5536  Nerium oleander T. C. Fuller 1971-9-15 19928 Contra Costa Carquinez Strait; Old Highway 4, Alhambra Valley, ca. 4 miles west of Martinez. 0 Comment
  JEPS112074  Oemleria cerasiformis D. G. Kelch 2003-2-7 03 .35 Contra Costa Sky Ranch. Dutra Road path ~700-1000 ft. 250 Comment
  JEPS75476  Oemleria cerasiformis P. F. Yorks 1974-2-24 111 Contra Costa ca 1.4 km s Bear Creek Rd on Hampton Rd in Hampton Road Natural Reserve (n of Briones Reservoir) Comment
  UC1128080  Oemleria cerasiformis R. W. Lundh 1933-4-2 226 Contra Costa San Francisco Quad. Comment
  UC764022  Oemleria cerasiformis R. F. Hoover 1938-3-8 2823 Contra Costa e slope Grizzly Peak ridge; Grizzly Peak Comment
  JEPS96237  Oenothera curtiflora Barbara Ertter 1991-9-22 10827 Contra Costa sw El Cerrito (Point Isabel Regional Shoreline); Point Isabel Regional Shoreline Comment
  CAS-BOT-BC171591  Oenothera deltoides subsp. howellii P. A. Munz 1949-6-1 14436 Contra Costa Sand dunes east of Antioch. Comment
  CAS-BOT-BC171595  Oenothera deltoides subsp. howellii Alice Eastwood 1921-4-18 10283 Contra Costa Antioch Comment
  UC1073376  Oenothera deltoides subsp. howellii George B. Rossbach 1955-5-22 369 Contra Costa dunes near bank of San Joaquin River (e edge of Antioch); Antioch Comment
  CAS-BOT-BC171586  Oenothera deltoides subsp. howellii W. M. Klein 1958-6-9 433 Contra Costa Sandhills north of Antioch along the San Joaquin River channel. 1 Comment
  UCD17865  Oenothera deltoides subsp. howellii Glen Holstein 2000-6-23 s.n. Contra Costa California. Contra Costa County: Midway between Brentwood and Oakley on west side of Highway 4. Comment
  UC615575  Oenothera elata subsp. hookeri Beryl O. Schreiber 1933-10-5 934 Contra Costa marsh Mount Diablo Comment
  SEINET7719109  Oenothera micrantha Chesnut, Drew 1889-4-18 Contra Costa Antioch Comment
  CDA36713  Olea europaea D. G. Kelch 2010-10-5 10 .417 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UC691743  Orobanche fasciculata Mary L. Bowerman 1933-6-7 2255 Contra Costa Mount Diablo. North Peak Ridge, south face. Comment
  UC691747  Orobanche uniflora subsp. occidentalis Mary L. Bowerman 1935-5-18 3029 Contra Costa Mount Diablo. North of the large summit parking area. Exposure northeast. Comment
  CHSC22522  Orthocarpus Robert A. Schlising 1962-4-7 2139 Contra Costa California Coast Ranges. Field along Deer Valley Road, few mi S of Antioch. Comment
  SEINET3821123 Image available Orthocarpus erianthus Lewis S. Rose 1932-3-26 32115 Contra Costa Open hillsides, Nortonville. Comment
  SEINET10549722  Orthocarpus purpurascens John T. Middleton 1936-4-10 Middleton 134 D Contra Costa Deer valley. Comment
  UC1555267  Osmorhiza berteroi R. C. Stebbins 1988-5-25 Contra Costa Memory and Packrat trails Tilden Park, Tilden Nature Area Comment
  RSA720798  Osmorhiza berteroi Mary L. Bowerman 1975-6-7 s.n. Contra Costa Mount Diablo, Big Spring Comment
  CDA4721  Oxalis corniculata D. G. Kelch, A. G. Murdock 2005-5-23 5 .375 Contra Costa Carquinez Strait Region; Crockett - Crolona Heights. 6th Street at Lillian Street, Crockett. Comment
  SEINET920557  Oxalis corniculata August Hartman 1960-1 32 Contra Costa 2055 Carmel Drive, Concord. 22 Comment
  UC2070526  Oxalis pes-caprae Barbara Ertter 2003-3-28 18138 Contra Costa Round Valley Regional Preserve, mouth of Hardy Canyon along High Creek. Comment
  RSA0029056  Panicum capillare Barbara Ertter, Mary L. Bowerman, Lisa Schultheis 1998-8-21 16396 Contra Costa South side of Mount Diablo, South Gate Road 1.1 mi below entry kiosk. 366 Comment
  CDA9544  Parapholis incurva D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 9 .221 Contra Costa Byron Airport. Comment
  CHSC84570  Parapholis incurva John Dittes 2003-5-6 2003 -15 Contra Costa San Joaquin Valley; approximately 10.0 air-miles north of Livermore, 0.4 air-miles north of Vasco Road; Los Vaqueros Reservoir Watershed. 65 Comment
  RSA722067  Parapholis incurva Barbara Ertter, Brad Olson 1994-5-7 12764 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  CDA22267  Parietaria judaica D. G. Kelch, A. G. Murdock 2005-5-23 5 .372 Contra Costa Carquinez Strait Region; Crockett - Crolona Heights. 6th Street at Lillian Street, Crockett. Comment
  UC2028377  Paspalum dilatatum Barbara Ertter 1998-6-20 16241 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch Comment
  RSA0026146  Paspalum dilatatum Barbara Ertter 1998-6-20 16241 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Bob Pond at Old Borges Ranch. Comment
  RSA118092  Paspalum dilatatum J. T. Howell 1954-9-5 30025 Contra Costa Along road, Marsh Creek Springs Park Comment
  UC2028559  Paspalum distichum Barbara Ertter with Chris Thayer 1996-10-25 15366 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothill Regional Park. Comment
  UC1789178  Passiflora tarminiana Barbara Ertter 1999-9-17 16846 Contra Costa south edge of El Cerrito at northeast base of Albany Hill, edge of paved lot at southwest corner of junction San Pablo Avenue and Carlson Avenue, near Cerrito Creek. Comment
  JEPS68227  Pectocarya pusilla Mary L. Bowerman 1933-5-8 2019 Contra Costa near crest (n side, by rd to camp ground); Rock City Ridge Comment
  JEPS10358  Pedicularis densiflora W. L. Jepson 1923-2-18 9845 Contra Costa Las Trampas Ridge Comment
  JEPS10410  Pedicularis densiflora W. L. Jepson 1899-4-19 21287 Contra Costa Las Trampas Ridge Comment
  UC27313  Pedicularis densiflora W. L. Jepson Contra Costa Mount Diablo Comment
  UC691604  Pedicularis densiflora Mary L. Bowerman 1932-1-30 1080 Contra Costa nw corner of basin of ne fork of Sycamore Creek; Mount Diablo, Inner Black Hills Comment
  UCD102373  Pedicularis densiflora Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. Burma Road at Mount Diablo. 520 Comment
  UCD123307  Pedicularis densiflora Robert C. Bechtel 1952-4-12 54 Contra Costa Mt. Diablo. Comment
  UC16281  Pediomelum californicum G. Davidson July 1892 Contra Costa Mt. Diablo Comment
  SEINET3451383  Pellaea andromedifolia Dean G. Kelch, Andrew G. Murdock 2003-2-21 AGM 68 Contra Costa Martinez, Martinez, Mount Wanda 120 Comment
  UC1874997  Pellaea andromedifolia A. G. Murdock 2004-2-13 1255 Contra Costa Martinez, McHarry Ranch Road, Franklin Canyon, at fire road entrance. Comment
  SEINET11713741  Pellaea andromedifolia M. T. Doutt 1930-1 90 Contra Costa Marsh Creek Comment
  UC1795797  Pellaea mucronata var. mucronata Barbara Ertter, Mary L. Bowerman 1994-6-19 12856 a Contra Costa Mt. Diablo State Park east of Walnut Creek; scrub oak thicket north road, north of lower-summit parking lot, next to drainage on N. facing slope. Comment
  JEPS15174  Penstemon centranthifolius C. M. Belshaw 1936-5-9 2081 Contra Costa near Plot 14 (Nortonville); Mt. Diablo Quad., Nortonville Comment
  NY583786  Penstemon centranthifolius C. F. Baker 1903-4-25 2938 Contra Costa Antioch Comment
  UCD124087  Penstemon centranthifolius M. Wiesendanger 1925-5-1 1481 Contra Costa San Miguel. Comment
  RSA93278  Pentachaeta alsinoides Alice Eastwood, J. T. Howell 1936-4-19 2138 Contra Costa Nortonville. Comment
  JEPS116790  Pentachaeta alsinoides David Gowen 2006-6-14 610 Contra Costa Morgan Territory Regional Park; At the NW end of Eagle Trail. Comment
  UC133407  Pentachaeta exilis C. F. Baker 1923-4-28 2826 Contra Costa Marsh creek Mount 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
  UC691890  Perideridia kelloggii Mary L. Bowerman 1938-6-30 3698 Contra Costa Black Oak Flat Mount Diablo (dry streamlet n of chaparral) 762 Comment
  UCD127961  Perideridia parishii subsp. latifolia M. Wiesendanger 1925-5-1 1483 Contra Costa San Miguel. Comment
  UCD161764  Persicaria James A. Neilson Jr. 1972-10-22 3505 Contra Costa Walnut Creek drainage at State Highway 4. (Exact location unknown. Coordinates and elevation estimated by label maker.) 1 Comment
  CAS-BOT-BC413498  Persicaria amphibia Walter Knight; Joanne Dean 1978-8-14 3176 Contra Costa Browns Island Comment
  UCD99472  Persicaria lapathifolia Morris Halperin 1930-5-20 s.n. Contra Costa Near Antioch. Comment
  CHSC39484  Phacelia Tyler Williams 1984-4-18 20 Contra Costa Mt. Diablo. Upper site at Rocky Point Picnic Area on Summit Rd. in Mt. Diablo State Park. 670 Comment
  JEPS1459  Phacelia breweri W. L. Jepson 1922-5-23 9656 Contra Costa near summit; Mount Diablo Comment
  UC691690  Phacelia breweri Mary L. Bowerman 1933-5-2 1953 Contra Costa below Pioneer Camp; Mount Diablo 762 Comment
  UCD102378  Phacelia breweri Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. Devils Elbow-Devils Pulpit. 1070 Comment
  UC1618347  Phacelia californica Barbara Ertter, Chris Thayer 1993-5-7 11708 Contra Costa ca. 0.5 mi. n. Vollmer (=Bald) Peak (in EBMUD land e. of Tilden Park, just below ridge) 457 Comment
  UC671751  Phacelia californica Lincoln Constance 1940-3-16 2524 Contra Costa margin of San Francisco Bay Point Richmond 15 Comment
  UC24322  Phacelia ciliata var. ciliata J. Burtt Davy 1895-4-7 958 Contra Costa Antioch Comment
  UC107374  Phacelia distans T. S. Brandegee May 1889 Contra Costa Antioch Comment
  UC672426  Phacelia distans Herbert L. Mason 1929-3-29 5122 Contra Costa Mount Diablo 762 Comment
  UC762051  Phacelia distans R. F. Hoover 1937-5-14 2116 Contra Costa Antioch sand-dunes Comment
  POM65421  Phacelia distans C. F. Baker 1903-4-28 2806 Contra Costa Antioch Comment
  RSA83075  Phacelia distans Verne Grant, Alva Grant 1947-3-16 7892 Contra Costa East of Antioch. Comment
  UC672340  Phacelia douglasii Herbert L. Mason 1929-3-31 5161 Contra Costa dunes along river near Antioch; San Joaquin River Comment
  JEPS75508  Phacelia imbricata subsp. imbricata P. F. Yorks 1975-5-31 427 Contra Costa on Hampton Rd ca 1.6 km s Bear Creek Road (n of Briones Reservoir); Hampton Road Natural Preserve 180 Comment
  RSA170276  Phacelia imbricata subsp. imbricata W. L. Jepson 1918-6-5 7611 Contra Costa North Peak, Mt. Diablo. 945 Comment
  UCSC000586  Phacelia magellanica R. F. Hoover 1938-3-8 2821 Contra Costa Berkeley Country Club Comment
  POM118166  Phacelia phacelioides H. M. Hall, Essig 1916-5-31 10135 Contra Costa Mount Diablo 1140 Comment
  CDA28836  Phacelia tanacetifolia D. G. Kelch, Jessica Kolman 2009-5-29 9 .308 Contra Costa Carquinez Strait; Pinole Valley Park, near ridgetop. Comment
  UC691700  Phacelia tanacetifolia Mary L. Bowerman 1936-4-23 3404 Contra Costa w Deer Flat trail (just w of section line); Mount Diablo, Deer Ridge (Mitchell-Pine divide) 838 Comment
  SEINET7296998 Image available Phalaris arundinacea Malcolm A. Nobs, S. Galen Smith 1949-1 945 Contra Costa Otto's Black Bass Resort, 4 miles north of Kingston. Comment
  UC2028499  Phalaris coerulescens Barbara Ertter 1999-6-12 16713 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, just south confluence of NE and E forks of Sycamore Creek Comment
  CAS-BOT-BC259028  Phalaris lemmonii Ira L. Wiggins 1930-4-17 4583 Contra Costa 1/4 mi. s. of Byron Comment
  JEPS70598  Phalaris lemmonii W. L. Jepson 1929-4-29 15188 Contra Costa in the railroad right-of-way near Byron Comment
  POM301848  Phalaris lemmonii Mary L. Bowerman 1934-4-21 2533 Contra Costa Muir Area Comment
  CHSC79630  Phalaris paradoxa G. F. Hrusa; D. Crowe 1998-5-8 14401 Contra Costa Sacramento-San Joaquin River Delta. At E end of Dow Chemical property. 15 Comment
  JEPS127665  Phalaris paradoxa Barbara Ertter with David Gowen and Michael Park 2017-5-2 22809 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  UCD89357  Phalaris paradoxa Katharine Brandegee 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  UCD89368  Phalaris paradoxa Beecher Crampton 1956-5-14 3381 Contra Costa 4.5 miles S of Antioch. Comment
  JEPS18381  Pholistoma membranaceum Rimo Bacigalupi with F. Chisaki 1957-3-27 5763 Contra Costa opposite John Marsh Historical Home (along Marsh Creek Rd.) 48 Comment
  RSA459276  Pholistoma membranaceum H. de Forest 1930-4-6 s.n. Contra Costa S.E. of Mortonville. Small coal mine ravine. 244 Comment
  JEPS111929  Phoradendron serotinum subsp. tomentosum Dean G. Kelch and Andrew G. Murdock 2003-3-21 DGK 03 .038B Contra Costa Martinez - West: Ozol Rock and Scenic Drive. Comment
  JEPS87901  Phoradendron villosum Barbara Ertter, Lynne Hosley 1992-8-29 11264 Contra Costa e Mt. Diablo (Morgan Territory Regional Preserve, along Condor Trail); Morgan Territory Regional Preserve Comment
  UC521716  Phoradendron villosum Joseph Andorfer Ewan 1933-10-15 8040 Contra Costa s.w. slope Mt. Diablo 1066 Comment
  UC608463  Phoradendron villosum Beryl O. Schreiber 1934-2-22 944 Contra Costa Mt. Diablo Rd. Comment
  POM212436  Phoradendron villosum Joseph A. Ewan 1933-10-15 8040 Contra Costa SW slope of Mt Diablo. 1067 Comment
  CAS-BOT-BC260885  Phragmites australis Doreen Smith 2003-10-25 s.n. Contra Costa Martinez shoreline Comment
  CDA2311  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch. 0 Comment
  UC1789168  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch, single well-established clump at base of river bank. Comment
  JEPS46474  Pickeringia montana W. L. Jepson 1919-1-25 8212 Contra Costa Moraga Ridge Comment
  POM16711  Pickeringia montana var. montana A. D. E. Elmer 1903-05 4315 Contra Costa Mount Diablo 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
  UC1134138  Pinus attenuata R. W. Lundh 1932-8-27 148 Contra Costa 1 mi w Cave point; Mt. Diablo Quad. 579 Comment
  SEINET3871797  Pinus attenuata Judy Kaufman 1963-2-15 6 Contra Costa On top slopes of Flicker Ridge.; 0 107 Comment
  CAS-BOT-BC78544  Pinus coulteri Elizabeth McClintock 1967-10-22 4 Contra Costa Nortonville area Comment
  UC1076351  Pinus coulteri Herbert L. Mason 1929-10-8 5480 Contra Costa Nortonville Comment
  UC691927  Pinus coulteri Mary L. Bowerman 1931-3-8 565 Contra Costa above Mitchell Rock; Mount Diablo Comment
  UC1061678  Pinus muricata N. Floy Bracelin 1941-10-19 1713 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1061681  Pinus radiata N. Floy Bracelin 1941-12-29 1833 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS48207  Pinus sabiniana W. L. Jepson 1909-6-25 3118 Contra Costa Mt. Diablo Comment
  UC1614071  Plagiobothrys Charles M. Belshaw 1935-6-24 780 Contra Costa 1/2 mi e of Grizzly Peak (n face of Bald Peak); Bald Peak Comment
  CHSC67890  Plagiobothrys acanthocarpus James D. Jokerst 1988-3-21 2994 Contra Costa Los Vaqueros project in Livermore Valley ca. 1 mi W of Vasco Rd. and ca. 0.5 mi S of Camino Diablo Rd. Comment
  JEPS88006  Plagiobothrys acanthocarpus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8117 Contra Costa ca. 15 air mi. s.w. Stockton (w. & adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  RSA755523  Plagiobothrys acanthocarpus Barbara Ertter 1992-3-8 10912 Contra Costa Contra Loma Regional Park; vernally wet flat northeast of bend in Frederickson Lane. Comment
  CDA40676  Plagiobothrys humistratus Jim Jokerst 1989-3-29 3066 Contra Costa 0.25 mile south of Byron Hot Springs, northeast of Livermore. 0 Comment
  SEINET1869807  Plagiobothrys leptocladus Barbara Ertter, Jim Jokerst and Dave Magney 1989-1 8129 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton. 0 Comment
  JEPS68112  Plagiobothrys nothofulvus Elsa Kraeger 1926-3-7 Contra Costa e side Mt. Diablo (on road to summit) Comment
  UC573079  Plagiobothrys stipitatus var. micranthus H. L. Mason 1929-3-31 5144 Contra Costa Briones Valley Comment
  UC79381  Plagiobothrys stipitatus var. micranthus Katharine Brandegee Apr 1889 Contra Costa Byron Comment
  RSA0069382  Plagiobothrys stipitatus var. micranthus Katie Gallagher, Nick Jensen 2014-4-26 207 Contra Costa Las Trampas Regional Wilderness. 487 Comment
  UC79220  Plagiobothrys trachycarpus Katharine Brandegee May 1886 Contra Costa near Antioch Comment
  JEPS111489  Plagiobothrys undulatus Nancy Hillyard 2004-5-18 886 Contra Costa Briones Park Comment
  JEPS22059  Plantago coronopus G. Thomas Robbins 1958-7-13 3899 Contra Costa n end Berrellesa Street, Martinez; Carquinez Strait Comment
  UC1618130  Plantago coronopus Nancy Hillyard 1997-7-1 Contra Costa Tilden Park in hills behind Berkeley (on Nimitz Trail); Tilden Park, Nimitz Trail 300 Comment
Read comments
Aug 20 2009
  JEPS22973  Plantago elongata Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1959-4-14 7004 Contra Costa 8 mi s Antioch (just off Deer Valley Road, Briones Valley); Briones Valley 79 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
  UC28002  Plantago elongata J. Burtt Davy 1900-3-24 6522 Contra Costa near Stege Comment
  JEPS112001  Plantago erecta D. G. Kelch 2005-4-24 05 .156 Contra Costa Franklin Canyon Franklin Canyon, Contra Costa County, CA. Collier Hill. West Carbon 60 Comment
  JEPS6407  Plantago erecta W. L. Jepson 1923-4-22 9872 Contra Costa Mt. Diablo Comment
  UC691531  Plantago erecta Mary L. Bowerman 1933-4-15 1848 Contra Costa s of Arroyo del Cerro; Mount Diablo Comment
  UC691746  Plantago erecta Mary L. Bowerman 1930-6-18 336 Contra Costa upper end Rock City Canyon Mount Diablo, Rock City Canyon Comment
  CDA34009  Plantago lanceolata D. G. Kelch 2011-3-31 11 .081 Contra Costa Carquinez Region; Richmond; Hilltop Lake Park. Comment
  JEPS21983  Plantago lanceolata William T. Hirano 1958-4-28 Contra Costa near Inspiration Point (Wildcat Creek Road, San Pablo Ridge e of Berkeley); San Pablo Ridge 304 Comment
  JEPS86060  Plantago lanceolata William T. Hirano 1958-4-28 Contra Costa near Inspiration Point (Wildcat Creek Road, San Pablo Ridge e of Berkeley); San Pablo Ridge 304 Comment
  JEPS99965  Plantago lanceolata G. Smick 2003-5-30 GAS 203 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CHSC21614  Plantago major Willis Ball 1975-2-23 434 Contra Costa Contra Loma Regional Park. Small population in area #1 spread out in picnic area ca. 100 yds s of lake. 10 yds n of w end of parking lot. 45 Comment
  JEPS22091  Plantago maritima var. juncoides G. Thomas Robbins 1958-7-19 3903 Contra Costa about 0.75 mi s Pt. San Pablo, Potrero San Pablo, Richmond; San Francisco Bay, Pt. Orient Comment
  JEPS112002  Platanus racemosa D. G. Kelch 2003-8-13 03 .122 Contra Costa Arroyo del Hambre Along Alhambra Creek E of Mt Wanda. w/ AGM 74 Comment
  JEPS40290  Platanus racemosa W. L. Jepson 1899-10-7 14869 Contra Costa canyon e Bald Peak; Berkeley Hills Comment
  CAS-BOT-BC91608  Platystemon californicus James McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  UC101598  Platystemon californicus Katharine Brandegee 1907-5-5 d Contra Costa between Antioch and Marsh Creek; between Antioch and Marsh Creek Comment
  POM203638  Platystemon californicus var. californicus J. T. Howell 1933-5-14 11277 Contra Costa Hills east of St. Mary's college Comment
  UC76300  Plectritis ciliosa subsp. ciliosa Harley P. Chandler 1901-4-4 951 Contra Costa Mount Diablo, Pine Canyon Pine Canyon; Mount Diablo, Pine Canyon Comment
  JEPS2799 Image available Plectritis macrocera J. Burtt Davy 1895-4-7 951 Contra Costa Antioch; ; Antioch, Contra Costa Co. Comment
  UC766304  Plectritis macrocera Robert F. Hoover 1935-3-10 312 Contra Costa Antioch Comment
  UC2027810  Plectritis macrocera Barbara Ertter with Stu Garrett 1997-3-29 15542 Contra Costa West side Mount Diablo, Mothers Trail. 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-BC356112  Pluchea odorata Walter Knight; J. Dean 1978-8-14 3137 Contra Costa Browns Island Comment
  CAS-BOT-BC356113  Pluchea odorata Walter Knight; J. Dean 1978-8-14 3137 Contra Costa Browns Island Comment
  JEPS111733  Pluchea odorata var. odorata D. G. Kelch 2004-9-2 04 .334 Contra Costa Pacheco Marsh east of Martinez and I-680 and east of lone tree Marsh 5 Comment
  SJSU5395  Pluchea odorata var. odorata M. Bruch 1966-10-30 Contra Costa SW end of Winter Island, New York Slough, confluence of San Joaquin-Sacramento rivers c. 2 mi NW of Antioch Comment
  SBBG44987  Poa annua A. Eastwood, J. T. Howell 1936-4-19 Contra Costa Antioch Comment
  CHSC107517  Poa howellii D. G. Kelch 2006-5-4 06 .127 Contra Costa Coast Range: Vaca Canyon, on North facing road cut/bank along Alhambra Valley Road. 162 Comment
  POM300703  Poa howellii Mary L. Bowerman 1933-3-21 2148 Contra Costa Below Grape Spring (south from Curry Canyon) Comment
  CAS-BOT-BC236390  Poa secunda subsp. secunda Mary L. Bowerman 1935-5-3 2960 Contra Costa Mount Diablo. Sloan Road 487 Comment
  CHSC25045  Poa secunda subsp. secunda Willis Ball 1975-3-9 480 Contra Costa In area #8. On slope of a hill ca. 510 yds. w of Contra Loma Blvd. 124 Comment
  UC691174  Poa secunda subsp. secunda Mary L. Bowerman 1932-3-27 1140 Contra Costa below Mitchell Rock; Mt Diablo Comment
  UC691189  Poa secunda subsp. secunda Mary L. Bowerman 1931-4-11 693 Contra Costa Pine Canyon; Mt Diablo 121 Comment
  UC2028547  Poa secunda subsp. secunda Barbara Ertter 1998-4-4 15951 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, grasslands along creek south of Indian Valley School. Comment
  SEINET5554719  Poaceae J. Hamai 1985-1 s.n. Contra Costa Russell Reserve. Comment
  HSC14299  Pogogyne douglasii Leo Koch 1940-6-5 1002 Contra Costa Saline flat 2 mi. S of San Rafael ferry dock Comment
  UC306575  Pogogyne douglasii A. D. E. Elmer May 1903 4320 Contra Costa Walnut Creek Comment
  UC1607677  Pogogyne serpylloides Barbara Ertter, Chris Thayer 1993-5-7 11696 Contra Costa East Bay Municipal Utilities District land e. Tilden Park (Hopkins Spring 0.5 mi. s.e. of Inspiration Point on Wildcat Canyon Rd.); Hopkins Spring 304 Comment
  CHSC67525  Pogogyne zizyphoroides Lori May 1990-6-6 Contra Costa E of Bixley Rd., ca. 0.5 mi N of Hwy. 4. Comment
  CDA23065  Polycarpon tetraphyllum D. G. Kelch, D. A. Weinstein 2008-5-5 8 .091 Contra Costa Carquinez Strait; Richmond. W Chevy s Hill. N parking lot of Hilltop Mall. Comment
  UC691131  Polygonum amphibium Mary L. Bowerman 1935-7-22 3185 Contra Costa Hidden Pond Mount Diablo 518 Comment
  RSA721737  Polygonum amphibium var. emersum Barbara J. Ertter, K. Ertter 1995-7-11 14482 Contra Costa W side of Mt. Diablo SW of Walnut Creek, dense growth at lower end of Pine Pond. 183 Comment
  UC1192327  Polygonum amphibium var. stipulaceum Malcolm A. Nobs and S. Galen Smith 1949-7-7 937 Contra Costa Webb Island Sacramento Delta peat lands (edge of drainage ditch) Comment
  CHSC23355  Polygonum aviculare Willis Ball 1975-3-2 462 Contra Costa Contra Loma Regional Park. In area #4. In sand on beach e side of lake ca. 75 yds s of dam. 30 Comment
  CAS-BOT-BC413971  Polygonum aviculare subsp. aviculare R. E. Frenkel 1964-2-5 349 Contra Costa On California Hwy. 21, Market Plaza Center, Alamo 79 Comment
  CHSC97872  Polygonum aviculare subsp. buxiforme D. G. Kelch 2006-7-14 06 .328B Contra Costa Along Marine Vista Ave immediately west of Pacheco Slough. East of Martinez. 1 Comment
  JEPS112022  Polygonum hydropiperoides Dean G. Kelch and Andrew G. Murdock 2004-6-6 DGK 04 .228 Contra Costa Martinez - Train Station. Downtown Martinez. Alhambra Creek near bay and railroad Station. Comment
  UC1818918  Polygonum lapathifolium Barbara Ertter 1995-8-19 14503 Contra Costa Edge of Cerrito Creek on north side of Albany Hill, south edge of El Cerrito; dense weeds at edge of sluggish water. Comment
  JEPS41052  Polypodium calirhiza Rimo Bacigalupi and L. R. Heckard 1965-5-11 9077 Contra Costa At base of south-facing cliff on south side of Brooks Island (in San Francisco Bay southwest of Richmond). Comment
  UC1222107  Polypodium calirhiza Joseph Andorfer Ewan 1934-3-10 8657 Contra Costa 1/2 mi below Orinda rd. bridge; Wildcat Canyon Comment
Read comments
Aug 23 2009
  UC921105  Polypodium calirhiza Ethel Crum 1930-4-14 570 Contra Costa Mitchell Canyon; Mt. Diablo Comment
  UC692121  Polypodium calirhiza Mary L. Bowerman 1935-3-15 2736 Contra Costa e fork Arroyo del Cerro; Mt. Diablo 262 Comment
  UCR254830  Polypogon Peter Rubtzoff 1968-9-18 5966 Contra Costa North Gate Road, c. 5 miles NW of Mt. Diablo State Park north entrance 58 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
  RSA0028901  Polypogon Peter Rubtzoff 1968-9-18 5965 Contra Costa North Gate Road, ca. 5 miles northwest of Mt. Diablo State Park north entrance. Comment
  UC691204  Polypogon interruptus Mary L. Bowerman 1933-6-3 2227 Contra Costa two mi by road from w entrance Mount Diablo (spring in chaparral) Comment
  CAS-BOT-BC233018  Polypogon interruptus Mary L. Bowerman 1931-4-4 656 Contra Costa Mount Diablo. West Road 4.5 miles from entrance Comment
  UCD37371  Polypogon interruptus Beecher Crampton 1959-9-3 5454 Contra Costa Contra Costa County, 2 miles north of city of Orinda, Bear Creek, East Bay Municipal Utilities District Project. Comment
  RSA484484  Polypogon monspeliensis A. A. Beetle 1941-6-24 s.n. Contra Costa Point Richmond on San Francisco Bay. Comment
  UC1819045  Polypogon monspeliensis Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14234 Contra Costa South side Mount Diablo, Sheepherder Springs complex 1/2 mile north of Curry Point, wet ground in grassland. 487 Comment
  UC665693  Polypogon monspeliensis Thomas Morley 1940-11-21 85 Contra Costa banks at upper end of San Leandro Lake near mouth of Redwood Creek; upper end of San Leandro Lake, near mouth Redwood Creek 129 Comment
  UC691205  Polypogon monspeliensis Mary L. Bowerman 1933-6-21 2338 Contra Costa Donner Canyon Mount Diablo; , Donner Canyon 335 Comment
  UCD91254  Polypogon monspeliensis Brandegee 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  UCD91255  Polypogon monspeliensis Brandegee 1916-5-9 s.n. Contra Costa Byron Springs. Comment
  CAS-BOT-BC232580  Polypogon monspeliensis Niall McCarten; V. I. Daina 1986-6-1 04141057 5 Contra Costa E of Byron Highway, N of Clifton Court Road Comment
  UC2013044  Polypogon viridis Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14917 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate road along Little Pine Creek. Comment
  CDA23603  Polystichum munitum D. G. Kelch 2008-2-24 8 .015 Contra Costa Carquinez Strait; Pinole Valley Park. Comment
  UC606764  Polystichum munitum Edward Lee 1936-4-19 1983 Contra Costa se slope of island Red Rock; San Francisco Bay Comment
  JEPS111521  Populus alba D. G. Kelch 2005-5-5 05 .205 Contra Costa Point Pinole - Giant Marsh; Giant Salt Marsh Comment
  UC1925893  Populus fremontii Donald G. Nelson 1937-4-29 514 Contra Costa Road from Pinole south towards Alhambra Road. Comment
  UC406993  Populus fremontii subsp. fremontii Ira L. Wiggins 1930-4-18 4602 Contra Costa se side Jersey Island (Levee bank); se side of Jersey Island Comment
  SD211524  Potamogeton filiformis Barbara Ertter, Diane Lake, et al 1991-8-18 10715 Contra Costa Browns Island North of Pittsburg near confluence of Sacrament and San Joaquin rivers opposite Pittsburg Marina; at West end of island. Comment
  UC1606300  Potamogeton filiformis Barbara Ertter with Lynne Hosley and Sid Cowles 1992-6-7 11087 Contra Costa pond in quarry E of Round Top; Sibley Volcanic Regional Preserve, Oakland Hills Comment
  UC2046367  Potamogeton richardsonii Barbara Ertter 2015-10-9 22454 Contra Costa Antioch marina on San Joaquin River delta. Comment
  UCSC000363  Potentilla rivalis var. millegrana I. J. Condit 2008-8-19 s.n. Contra Costa Antioch Comment
  UC766803  Proboscidea lutea R. F. Hoover 1937-8-31 2705 Contra Costa Pittsburg Comment
  UC1784904  Prunus avium Barbara Ertter with Dan Norris 1999-10-23 s. n. Contra Costa Huckleberry Botanic Regional Preserve, Oakland Hills, along lower loop trail Comment
  JEPS112094  Prunus cerasifera D. G. Kelch 2005-2-28 05 .11 Contra Costa Pinole Valley Near Pinole Valley Road 36 Comment
  UC2012969  Prunus cerasifera Barbara Ertter with Tony Morosco 1996-7-27 15033 Contra Costa Mount Diablo State Park, lower Donner Creek at old cabin site. Comment
  UC2027738  Prunus cerasifera Barbara Ertter 1997-2-11 15452 Contra Costa North side of Mount Diablo, Donner Cabin site on Donner Canyon Road. Comment
  JEPS99978  Prunus dulcis G. Smick 2003-2-18 GAS 63 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  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
  UC2027733  Prunus dulcis Barbara Ertter 1997-2-16 15460 Contra Costa Shell Ridge Open Space on west flank of Mount Diablo, exposed sandstone on main ridgeline. Comment
  UC2027995  Prunus subcordata Barbara Ertter with Tony Morosco 1998-4-12 16023 Contra Costa Mount Olympia on north side of Mount Diablo, midway down Olympia Road from summit. Comment
  CAS-BOT-BC151202  Prunus virginiana var. demissa Mary L. Bowerman 1933-5-21 2148 a Contra Costa Grape Spring (south from Curry Canyon), fifteen feet from surface of water - Mount Diablo Comment
  UC2027928  Prunus virginiana var. demissa Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17633 Contra Costa Northwest flank of Mount Diablo, headwaters of Arroyo del Cerro between Olofson Ridge and Long Ridge. Comment
  CHSC116623  Pseudognaphalium luteoalbum Lowell Ahart; Josephine Guardino 2016-4-19 20767 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
  UC697187  Pseudognaphalium ramosissimum Mary L. Bowerman 1938-11-19 3735 Contra Costa on stream bank Mount Diablo, Mitchell Canyon 259 Comment
  UC1051469  Psilocarphus brevissimus var. brevissimus Herbert L. Mason 1952-4-14 14266 Contra Costa 3.5 mi s Byron Comment
  UC694145  Psilocarphus tenellus H. L. Mason 1932-4-24 6964 Contra Costa Marsh Creek Road Comment
  RSA0068481  Psilocarphus tenellus Katie Gallagher, Nick Jensen 2014-4-26 194 Contra Costa Las Trampas Regional Wilderness. 396 Comment
  POM138974  Ptelea baldwinii subsp. crenulata M. S. Baker 1904-6-22 s.n. Contra Costa Mt. Diablo above Walkers. Comment
Read comments
Mar 6 2011
  CAS-BOT-BC148639  Ptelea crenulata W. L. Jepson 1918-6-5 7603 a Contra Costa Mt. Diablo, Donner Canyon Comment
  CAS-BOT-BC148644  Ptelea crenulata V. Rattan 1887-5-22 s.n. Contra Costa Alhambra Valley Comment
  CAS-BOT-BC148647  Ptelea crenulata Volney Rattan 1887-5-22 s.n. Contra Costa Alhambra Val. Comment
  JEPS40169  Ptelea crenulata W. L. Jepson 1920-9-6 9082 Contra Costa Mt. Diablo Comment
  UC1177068  Ptelea crenulata Joanne Taylor 1941-7-18 22 Contra Costa hills by Nortonville 213 Comment
  UC1733836  Ptelea crenulata Kay H. Beach 1941-4-30 1080 Contra Costa about 7 mi w Byron (n bank along Marsh Creek); Marsh Creek 30 Comment
  UC17375  Ptelea crenulata F. T. Bioletti 1894-5-13 Contra Costa Mt. Diablo Comment
  UC34836  Ptelea crenulata Chesnut and Drew 1889-4-17 Contra Costa Summerville Comment
  UC571101  Ptelea crenulata H. L. Mason 1928-4-1 4270 Contra Costa hills n Mount Diablo (canyon back of Antioch hills) Comment
  UC692585  Ptelea crenulata Mary L. Bowerman 1935-6-1 3099 Contra Costa gully e Mitchell-Pine divide; Mount Diablo 975 Comment
  UCD38732  Ptelea crenulata Beecher Crampton 1957-7-9 4273 Contra Costa 2-3 miles northwest Martinez on the road to Crockett. Comment
  UC2043241  Pteridium aquilinum var. pubescens Barbara Ertter with David Gowen 2015-2-22 22227 Contra Costa Alder Creek below Green Ranch at road crossing, Mount Diablo SE of summit. Comment
  CDA29027  Pterostegia drymarioides D. G. Kelch 2006-5-7 6 .155 Contra Costa Carquinez Strait.; Crockett. Upper Edward s Canyon. Comment
  RSA0031298  Puccinellia nuttalliana Barbara Ertter, Brad Olson 2000-6-2 17301 Contra Costa Brushy Peak Regional Preserve NE of Livermore, at south base of Brushy Peak. Comment
  UC2028193  Quercus X chasei Barbara Ertter 1997-11-1 15879 Contra Costa South side Mount Diablo, near Balancing Rock on Knobcone Point Road. Comment
  JEPS28855  Quercus X morehus James B. Roof, Irja Knight 1962-2-21 Contra Costa Moraga Ridge Comment
  UC691317  Quercus X morehus Mary L. Bowerman 1933-6-14 2278 Contra Costa Inner Black Hills, w of 1970 Mount Diablo Comment
  CAS-BOT-BC45663  Quercus agrifolia Mary L. Bowerman 1930-6-3 225 Contra Costa West road, 1.9 miles from west entrance, Mount Diablo Comment
  CDA33977  Quercus agrifolia D. G. Kelch 2011-3-31 11 .082-B Contra Costa Carquinez Strait region.; Pinole. Comment
  POM210976  Quercus agrifolia Joseph A. Ewan 1933-10-15 8027 Contra Costa SW slope of Mt Diablo 1067 Comment
  UC1084391  Quercus agrifolia G. Thomas Robbins 1937-4-25 147 Contra Costa 2 mi e Alamo (on road to Mt. Diablo) Comment
  UCSC010011  Quercus agrifolia var. agrifolia Al Keuter 2014-5-23 AK 00 -095 Contra Costa Along Wildcat Canyon Road on the northeast side of the hills behind Berkeley 168 Comment
  UC2042966  Quercus berberidifolia Barbara Ertter, Brad Olson, Diane Lake, Seth Adams, et al. 1994-9-11 13092 Contra Costa Chaparral Springs addition to Mt. Diablo State Park, north side of Marsh Creek Road at high point southeast of Clayton. Comment
  UC691301  Quercus berberidifolia Mary L. Bowerman 1933-5-19 2142 Contra Costa Sulphur Spring Canyon, e fork Mount Diablo 457 Comment
  UC691306  Quercus berberidifolia Mary L. Bowerman 1933-4-15 1878 Contra Costa canyon s Arroyo del Cerro; Mount Diablo Comment
  RSA0041717  Quercus berberidifolia Mary L. Bowerman 1930-10-19 490 Contra Costa South road at Garden-of-the-Gods (Fossil Ridge). Comment
  CAS-BOT-BC62698  Quercus chrysolepis Mary L. Bowerman 1931-5-16 852 Contra Costa Mt. Diablo summit, south side Comment
  CDA19816  Quercus chrysolepis P. Akers 2002-5-11 s.n. Contra Costa Northern California; Mt Diablo Summit Trail. 938 Comment
  UCSB23056  Quercus chrysolepis McMinn, Howard 1922-6-2 Contra Costa Near summit of Mt. Diablo Comment
  CAS-BOT-BC86643  Quercus douglasii Alice Eastwood 1923-5-4 11732 Contra Costa Mt. Diablo Comment
  JEPS111964  Quercus douglasii D. G. Kelch 2004-9-2 04 .344 Contra Costa Martinez - West: Ozol Rock and Scenic Drive East of Ozol 22 Comment
  RSA573423  Quercus douglasii Joseph A. Ewan 1933-10-15 8028 Contra Costa Mount Diablo, south slope flat. 762 Comment
  CAS-BOT-BC86123  Quercus dumosa Mary L. Bowerman 1932-9-17 1584 Contra Costa Mount Diablo. Donner Canyon, west fork: Bank between forks 304 Comment
  CDA39042  Quercus garryana D. G. Kelch 2011-6-5 11 .57 Contra Costa Carquinez Strait; South of Crockett, south of Cummings Skyway. Comment
  CHSC83237  Quercus garryana E. Dean; M. Bowerman, B. Ertter, J. Tucker, J. Kerbavaz 2000-9-13 656 Contra Costa Mount Diablo State park, Fossil Ridge, along fire road that begins at the parking lot southeast of Rock City and climbs onto Fossil Ridge in southeasterly direction, ca. 0.1 mile from Rock City, slightly downslope of road. 487 Comment
  UCD130592  Quercus garryana E. Dean; M. Bowerman, B. Ertter, J. Tucker, J. Kerbavaz 2000-9-13 654 Contra Costa California. Contra Costa County: Mount Diablo State park, Fossil Ridge, along fire road that begins at the parking lot southeast of Rock City and climbs onto Fossil Ridge in southeasterly direction, ca. 0.1 mile from Rock City, slightly downslope of road. 487 Comment
  UC2070456  Quercus kelloggii Barbara Ertter with Joanne Kerbavaz 2000-6-12 17311 Contra Costa Rocky City area on SSW side of Mount Diablo. Comment
  UCD17142  Quercus parvula var. shrevei E. Dean; with B. Ertter, J. M. Tucker, and K. Chaney 2000-9-13 650 Contra Costa California. Contra Costa County: City of El Sobrante; El Sobrante Ridge, upslope of the terminus of Heavenly Ridge Rd., junction of Heavenly Ridge Trail and Manzanita Trail. 213 Comment
  UC5689  Quercus wislizeni unknown 78 Contra Costa Summit Mt. Diablo Comment
  UC691307  Quercus wislizeni Mary L. Bowerman 1931-10-5 1056 Contra Costa ridge e Rhine Canyon (about halfway-up slope, on spur at s end of ridge (also next canyon to e, which enters Curry Canyon at gate to Olafsons' ranch); Mount Diablo 487 Comment
  UC691311  Quercus wislizeni Mary L. Bowerman 1933-5-21 2161 Contra Costa ridge above Morgan Sulphur Spring; Mount Diablo 381 Comment
  CAS-BOT-BC104708  Quercus wislizeni Mary L. Bowerman 1933-9-23 2445 Contra Costa Mount Diablo. Ridge at W end of Meridian Flat; close to saddle by flat Comment
  CAS-BOT-BC104718  Quercus wislizeni D. C. Barclay 1919-5-10 s.n. Contra Costa from the hill above Redwood Inn, Moraga Valley Comment
  SEINET13954084 Image available Quercus wislizeni Peter H. Raven 1950-1 1355 Contra Costa Muraga Ridge 305 Comment
  UC691290  Quercus wislizeni var. frutescens Mary L. Bowerman 1931-4-25 777 Contra Costa Mount Diablo Comment
  CAS-BOT-BC362441  Rafinesquia californica Mary L. Bowerman 1930-6-14 327 Contra Costa Mount Diablo. Meridian Peak little below summit Comment
  CAS-BOT-BC362445  Rafinesquia californica Brandegee No date on label s.n. Contra Costa Mt Diablo Comment
  UC691952  Ranunculus aquatilis Mary L. Bowerman 1933-3-18 1754 Contra Costa Hidden Pond Mount Diablo Comment
  UCR263547  Ranunculus aquatilis var. capillaceus Barbara Ertter, Tony Morosco 1998-7-11 16365 Contra Costa San Francisco Bay Region, North base of Mount Diablo, small pond on north side of Bruce Lee Road east of Mitchell Canyon staging area 183 Comment
  CAS-BOT-BC379108  Ranunculus aquatilis var. diffusus W. W. Carruth 1902-4-29 s.n. Contra Costa Mount Diablo Comment
  CAS-BOT-BC379110  Ranunculus aquatilis var. diffusus A. D. E. Elmer 1903-5-1 4318 Contra Costa Mount Diablo Comment
  RSA0029781  Ranunculus aquatilis var. subrigidus Barbara J. Ertter, Alan Prather 2003-6-7 18190 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, pond NE of main trailhead. Comment
  UCD84954  Ranunculus californicus Chuck Hughes 2010-4-1 226 Contra Costa About 0.6 mile east of Los Vaqueros Road. 305 Comment
  UCD95957  Ranunculus californicus P. B. Kennedy 1916-5-11 s.n. Contra Costa Grand View Terrace; Richmond District. Comment
  POM194560  Ranunculus californicus Eugene Memmler 1929-4-21 2377 Contra Costa Moraga Valley Comment
  POM268440  Ranunculus californicus Mary L. Bowerman 1930-6-5 246 Contra Costa W road 5.8 miles fron entrance to Park, Mt Diablo, Contra costa County Comment
  UCD35997  Ranunculus californicus Beecher Crampton 1949-4-21 427 Contra Costa Contra Costa County, city of Richmond, in vacant lot near Santa Fe Railroad, S. 14th Street. 7 Comment
  UC9453  Ranunculus canus var. canus J. Burtt Davy 1895-4-7 915 Contra Costa Antioch Comment
  POM268450  Ranunculus canus var. laetus Lyman Benson 1935-3-16 6273 Contra Costa Mitchell Canyon near Clayton; Mt. Range: Mt. Diablo; Watershed: Walnut Creek. 244 Comment
  POM268452  Ranunculus canus var. laetus Lyman Benson 1935-3-16 6276 Contra Costa Mitchell Canyon near Clayton; Mt. Range: Mt. Diablo; Watershed: Walnut Creek. 244 Comment
  SEINET3161111  Ranunculus hebecarpus L. S. Rose 1940-4-11 40180 Contra Costa Marsh Creek, 6 mi. se. of Clayton 61 Comment
  UC1607964  Ranunculus hebecarpus Donald G. Nelson 1937-4-29 507 Contra Costa Road from Pinole south towards Alhambra Road Pinole Comment
  UC692123  Ranunculus hebecarpus Mary L. Bowerman 1931-3-29 613 Contra Costa Riggs Canyon Mount Diablo Comment
  UC692126  Ranunculus hebecarpus Mary L. Bowerman 1933-4-9 1832 Contra Costa Donner Canyon Mount Diablo (w fork, by stream (where large fork to e)) 243 Comment
  CDA31880  Ranunculus hebecarpus D. G. Kelch 2008-4-6 8 .033 Contra Costa Black Diamond Mines Regional Park. Near small picnic area between parking lot and mine entrance. 0 Comment
  JEPS99975  Ranunculus muricatus G. Smick 2003-4-29 GAS 147 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC692127  Ranunculus muricatus Mary L. Bowerman 1933-4-15 1844 Contra Costa canyon s Arroyo del Cerro (in or bordering stream); Mount Diablo Comment
  UC692145  Ranunculus muricatus Mary L. Bowerman 1933-6-21 2342 Contra Costa edge of stream near Bilbaren Lodge (s of house, n of barn); Mount Diablo, Donner Canyon Comment
  UC61031  Ranunculus orthorhynchus var. bloomeri N. L. Gardner 1904-2-17 Contra Costa Happy Valley Comment
  JEPS100009  Raphanus raphanistrum G. Smick 2003-4-8 GAS 132 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CDA23557  Raphanus sativus D. G. Kelch 2008-3-3 8 .03 Contra Costa Carquinez Strait; Crockett. Under Zampa (Carquinez) Bridge. Comment
  UC2028317  Raphanus sativus Barbara Ertter, Susan D'Alcamo 1998-6-12 16160 Contra Costa North Gate Road on west flank of Mount Diablo, dogleg in road above ranches opposite Angel Kerley trailhead. Comment
  CDA29170  Rhamnus alaternus D. G. Kelch 2008-6-1 8 .219 Contra Costa Carquinez Strait; Rodeo Shore. Comment
  UC1789165  Rhamnus alaternus Barbara Ertter with Tony Morosco 1998-10-18 16431 Contra Costa NW slope of Lime Ridge Open Space just S of Ygnacio Valley Road, bottom of swale at fenceline Comment
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Apr 29 2013
  UC2062667  Rhamnus alaternus Barbara Ertter with David Gowen 2006-4-14 18667 Contra Costa Lime Ridge Open Space (City of Concord) at NW foot of Mount Diablo, SE side of Ygnacio Valley Road. Comment
  UC1784204  Rhamnus californica Ethel Crum 1930-9-29 858 Contra Costa Marsh Creek Road to Holt Comment
  UC692596  Rhamnus californica Mary L. Bowerman 1932-11-26 1677 Contra Costa Pepperwood Springs (by w road not far from junction of roads) Mount Diablo Comment
  JEPS112066  Rhamnus californica subsp. californica D. G. Kelch 2003-3-21 03 .69 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
  UC692584  Rhamnus crocea Mary L. Bowerman 1932-9-17 1579 Contra Costa Donner Canyon, w branch Mount Diablo Comment
  CAS-BOT-BC59894  Rhamnus ilicifolia A. D. E. Elmer 1903-5-1 4326 Contra Costa Mount Diablo. Comment
  CAS-BOT-BC59896  Rhamnus ilicifolia Mary L. Bowerman 1932-9-17 1579 Contra Costa Donner Canyon, w. branch: Canyon bottom. Comment
  CAS-BOT-BC59897  Rhamnus ilicifolia H. E. McMinn 1922-6-2 90 Contra Costa N. slope of Mt. Diablo. Comment
  UC1121885  Rhamnus ilicifolia R. C. Wilson 1935-2-27 117 Contra Costa 2 mi s Clayton; Mt. Diablo Quad. 259 Comment
  UC18594  Rhamnus tomentella subsp. tomentella E. L. Greene 1892-1 Contra Costa Mount Diablo Comment
  UC692593  Rhamnus tomentella subsp. tomentella Mary L. Bowerman 1932-11-19 1658 Contra Costa Lower Grapevine Spring, at head of spring Mount Diablo Comment
  UC692597  Rhamnus tomentella subsp. tomentella Mary L. Bowerman 1933-9-3 2419 Contra Costa s of Meridian-North Peak saddle; Mount Diablo Comment
  UC692602  Rhamnus tomentella subsp. tomentella Mary L. Bowerman 1933-1-7 1687 Contra Costa Perkins Canyon, by dirt road Mount Diablo 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
  JEPS104681  Ribes John L. Morrison 1937-4-11 2101 Contra Costa Along a small tributary running into Wildcat Creek, about 1 mi below the C.C.C Camp Comment
  JEPS49302  Ribes W. L. Jepson 1923-6-10 9997 Contra Costa Upper Marsh Creek Mt. Diablo Comment
  UC75430  Ribes Milo S. Baker 1904-6-24 Contra Costa near summit Mt. Diablo Comment
  UC1925895  Ribes Donald G. Nelson 1937-4-29 559 Contra Costa lefthand side of Tunnel Road at entrance to Canyon. Oakland. Comment
  SD2124  Ribes californicum Earle Mulliken 1905-2-5 161 Contra Costa Berkeley Hills. Comment
  SJSU7862  Ribes malvaceum J. A. Merriman 1965-2-13 Contra Costa North Rd, Mt Diablo Comment
  UC1614322  Ribes malvaceum Charles M. Belshaw 1935-12-28 1422 Contra Costa Las Trampas Ridge, on trail above ranch house Las Trampas Ridge Comment
  UC570821  Ribes malvaceum Herbert L. Mason 1924-11-23 1168 Contra Costa Las Trampas Ridge Comment
  RSA0021635  Ribes malvaceum J. T. Howell 1926-3-7 1667 Contra Costa Mt. Diablo. Comment
  JEPS49205  Ribes menziesii W. L. Jepson 1923-6-10 9996 Contra Costa Upper Marsh Creek Mt. Diablo Comment
  UC692433  Ribes menziesii Mary L. Bowerman 1935-5-18 3018 Contra Costa nw-facing slope across the road from and a little e parking area; Mt. Diablo 1082 Comment
  UC692436  Ribes menziesii Mary L. Bowerman 1932-9-3 1541 Contra Costa Meridian Peak summit, by trail leading s from the house Mount Diablo Comment
  UC692437  Ribes menziesii Mary L. Bowerman 1933-6-3 2232 Contra Costa Meridian Peak summit, on the stony bank bordering n edge of one-way rd. Mt. Diablo Comment
  UC692559  Ribes menziesii Mary L. Bowerman 1931-4-25 780 Contra Costa summit Meridian Peak (n side); Mount Diablo Comment
  CAS-BOT-BC206019  Ribes menziesii Peter H. Raven 1956-4-8 8985 Contra Costa About 0.5 mile north-east of Grizzly Peak 396 Comment
  JEPS116868  Ribes menziesii David Gowen 2007-9-1 790 Contra Costa Huckleberry Regional Preserve. Along trail descending to canyon bottom near trail junction above creek. Comment
  UC570964  Ribes sanguineum var. glutinosum Herbert L. Mason 1925-9-12 2224 Contra Costa head San Leandro Canyon; Oakland Hills Comment
  CDA7895  Ricinus communis D. G. Kelch, A. G. Murdock 2004-7-9 4 .316 Contra Costa Carquinez Strait Region; Rodeo Shoreline. Comment
  UC697146  Rigiopappus leptocladus Mary L. Bowerman 1931-4-25 759 Contra Costa opposite Oak Knoll Picnic Grounds; Mount Diablo, Mountain House Canyon 822 Comment
  UC1050828  Romneya coulteri N. Floy Bracelin 1941-6-1 1344 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  SD62209  Romneya trichocalyx Helen Beard 1965-1-20 Contra Costa From L.L. Edmunds Native Plant Nursery, Danville, Contra Costa County, California. Original place of collection not known. University of California Botanical Garden 50.1640. Comment
  CAS-BOT-BC74411  Rorippa curvisiliqua Walter Knight; Joanne Dean 1978-8-14 3171 Contra Costa Browns Island. Comment
  SD103750  Rorippa palustris subsp. glabra Walter Knight, Irja Knight 1979-6-15 3398 Contra Costa Crooked slough, Brown's Island. Comment
  JEPS78605  Rorippa palustris var. occidentalis Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3278 Contra Costa Crooked Slough Browns Island, Crooked Slough Comment
  CAS-BOT-BC147407  Rosa californica Peter H. Raven 1957-7-5 11053 Contra Costa Point Isabel Comment
  UC691149  Rosa gymnocarpa Mary L. Bowerman 1931-5-23 895 Contra Costa Alamo Canyon Mount Diablo (n-facing bank in canyon bottom) 487 Comment
  CAS-BOT-BC148206  Rosa spithamea Alice Eastwood 1923-5-4 11705 Contra Costa Mt. Diablo 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-BC147205  Rubus parviflorus Mary L. Bowerman 1933-11-4 2464 Contra Costa Alder Creek Springs 487 Comment
  CAS-BOT-BC158775  Rubus ursinus Alice Eastwood 1915-5-30 4448 Contra Costa Mt. Diablo Comment
  UC12996  Rubus ursinus W. H. Brewer 1862-5-17 1107 Contra Costa Canyon n Monte Diablo; Canyon n of Monte Diablo Comment
  CAS-BOT-BC421737  Rumex conglomeratus Irja Knight; W. Knight 1977-5-22 s.n. Contra Costa Antioch Dunes. Comment
  UC465806  Rumex crispus J. Burtt Davy 1895-4-8 976 Contra Costa Antioch Comment
  UC6975  Rumex crispus J. Burtt Davy 1895-4-8 977 Contra Costa Antioch Comment
  CAS-BOT-BC421625  Rumex crispus Ira L. Wiggins 1930-4-18 4605 Contra Costa Jersey Island Comment
  UCR78377  Rumex obtusifolius Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8122 Contra Costa San Joaquin Valley, Clifton Court Forebay, c. 15 air miles southwest of Stockton 0 Comment
  JEPS41050  Rumex pulcher Rimo Bacigalupi, and L. R. Heckard 1965-5-11 9075 Contra Costa sw of Richmond (w side of Brooks Island); San Francisco Bay, Brooks Island 6 Comment
  JEPS99968  Rumex pulcher G. Smick 2003-5-10 GAS 206 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS107084  Rumex salicifolius var. crassus Barbara Ertter, Brad Olson 1994-5-7 12762 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge. Edge of San Francisco Bay. Comment
  UC2012982  Rumex salicifolius var. salicifolius Barbara Ertter with Tony Morosco 1996-7-27 15030 Contra Costa Mount Diablo State Park, Donner Creek ca halfway between Regency Drive trailhead and old cabin site Comment
  OBI78191  Rupertia physodes Joseph Andorfer Ewan 1934-4-8 8752 Contra Costa S Fk. Marsh Creek, Mt. Diablo 244 Comment
  SJSU5703  Rupertia physodes C. O. Dudley 1966-5-1 113 a Contra Costa Reliez Valley, Briones Hills, N of Lafayette 152 Comment
  UC16326  Rupertia physodes unknown 1032 Contra Costa Mount Diablo Comment
  UC1745890 Image available Rupertia physodes Annetta M. Carter, Edward Lee 1936-5-24 1191 Contra Costa Marsh Creek about 2 mi. SE of Curry Canyon. Comment
  OBI12751  Rupertia physodes G. Thomas Robbins 1958-7-6 3890 Contra Costa Along Pinehurst Rd, on slopes above Upper San Leandro Reservoir, about 1/4 mi N of Alameda Co line 229 Comment
  JEPS112039  Ruppia maritima D. G. Kelch 2004-4-26 04 .138 Contra Costa Point Pinole 1 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
  UC13629  Sagina decumbens subsp. occidentalis J. P. Tracy 1900-3-24 610 Contra Costa low fields near Stege; San Francisco Bay Region Comment
  SEINET11268191  Salicornia europaea Barbara Ertter 1990-9-30 9656 Contra Costa Point Pinole Regional Shoreline, edge of sparina marsh at edge of salicornia marsh on SW corner of park; edge of San Pablo Bay.; 0 Comment
  UC69370  Salix Wm. W. Mott 1905-3-1 Contra Costa n.e. corner San Pablo Ave. & McAvoy Lane Comment
  UC69376  Salix Wm. W. Mott 1905-3-11 Contra Costa n.e. corner of San Pablo and McAvoy Lane Comment
  POM181455  Salix exigua I. L. Wiggins 1930-4-18 4587 Contra Costa Jersey Island. Comment
  UC407392  Salix exigua var. hindsiana Ira L. Wiggins 1930-4-18 4587 Contra Costa levee banks Jersey Isl. Comment
  UC691921  Salix exigua var. hindsiana Mary L. Bowerman 1935-5-30 3081 Contra Costa by Donner Canyon stream Donner Canyon; Mt. Diablo 152 Comment
  POM181448  Salix gooddingii I. L. Wiggins 1930-4-18 4591 Contra Costa Jersey Island. Comment
  JEPS112255  Salix laevigata D. G. Kelch 2005-5-13 05 .244 Contra Costa Martinez South of oil refinery along Railroad tracks Comment
  POM167563  Salix laevigata C. F. Baker 1903-4-28 2814 Contra Costa Mitchell Canyon. Mt Diablo. Comment
  POM167733  Salix laevigata H. P. Chandler 1901-3-22 859 Contra Costa Pacheco. Comment
  POM300630  Salix laevigata Mary L. Bowerman 1933-5-21 2162 -a Contra Costa Sulphur Spring Canyon. Mt. Diablo. Comment
  SEINET3158569  Salix laevigata H. P. Chandler 1901-3-22 858 Contra Costa Pacheco Comment
  UC437379  Salix laevigata J. Burtt Davy 1895-4-13 1011 Contra Costa near Lafayette Comment
  UC691923  Salix laevigata Mary L. Bowerman 1933-5-21 2162 a Contra Costa stream bed immediately below thimbleberry patch in Sulphur Spring fork; Mt. Diablo, Sulphur Spring Canyon Comment
  UC406991  Salix laevigata var. congesta Ira L. Wiggins 1930-4-18 4601 Contra Costa levee locks Jersey Isl. Comment
  JEPS77014  Salix lasiolepis Robert M. Lloyd 1963-3-17 2141 Contra Costa 0.5 mi e of intersection of Grizzly Peak Rd. and Skyline Drive (on Skyline (across from 7090 Skyline), Huckleberry trail) Comment
  CAS-BOT-BC129599  Salix lasiolepis var. lasiolepis Mary L. Bowerman 1933-4-9 1830 Contra Costa Donner Canyon, west fork; stream-bed below Twin Peaks - Mount Diablo Comment
  CAS-BOT-BC129556  Salix lasiolepis var. lasiolepis Mary L. Bowerman 1932-2-13 1087 Contra Costa By Alamo Creek (West Branch) - Mount Diablo 289 Comment
  JEPS111797  Salsola australis A. G. Murdock 2003-9-12 202 Contra Costa Rodeo - Lone Tree Point Rodeo shoreline 2 Comment
  JEPS79009  Salsola tragus Edward Lee with Annetta Carter 1935-8-17 1618 Contra Costa just e. Antioch Comment
  JEPS62662  Salvia columbariae Mrs. E. L. Mossman 1931-4-21 149 Contra Costa Grizzly Peak; Berkeley Hills 487 Comment
  SBBG29850  Salvia columbariae L. S. Rose 1935-5-16 Contra Costa Mt Diablo Comment
  UC634924  Salvia columbariae H. L. Mason 1929-3-29 5121 Contra Costa Mt. Diablo 762 Comment
  CAS-BOT-BC233286  Salvia mellifera C. F. Baker 1903-4-28 2945 Contra Costa Mitchell Canyon, Mt. Diablo Comment
  CAS-BOT-BC233291  Salvia mellifera Alice Eastwood 1923-5-4 11726 Contra Costa Mt. Diablo Comment
  POM283364  Salvia mellifera Lyman Benson 1935-3-16 6260 Contra Costa Mt. Diablo, Watershed: Walnut Creek; Mountain Range: Mt. Diablo. 915 Comment
  RSA15471  Salvia mellifera Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  SEINET3224512 Image available Salvia mellifera Lewis S. Rose 1941-3-22 41057 Contra Costa Mt. Diablo. 610 Comment
  UCD36923  Salvia mellifera Beecher Crampton 1956-5-14 3406 Contra Costa Southern boundary of Mount Diablo State Park. Comment
  SEINET5570354  Salvia mellifera H. S. Gentry 1931-1 49 Contra Costa Collected near Buckle Point Mt. Diablo. Comment
  UC2055610  Salvia spathacea Mary Bowerman 1972-5-6 s. n. Contra Costa Pine Canyon, 1/4 mile up canyon from lowest reservoir. Comment
  JEPS75505  Sambucus mexicana P. F. Yorks 1975-5-3 422 Contra Costa on Hampton Rd. ca 1.7 km s Bear Creek Road (n of Briones Reservoir); Hampton Road Natural Reserve 180 Comment
  UC1178021  Samolus parviflorus Herbert L. Mason 1955-7-14 14634 Contra Costa 1/2 mi e of Antioch Bridge Comment
  CAS-BOT-BC223247  Sanicula bipinnata Alice Eastwood; John Thomas Howell 1936-4-19 s.n. Contra Costa Nortonville Comment
  RSA471428  Sanicula bipinnata H. de Forest 1930-4-6 s.n. Contra Costa SE of Mortoville, Small coal mine ravine. Comment
  SEINET10545764  Sanicula bipinnata John T. Middleton 1936-4-18 Middleton 146 Contra Costa Comment
  UC1561208  Sanicula bipinnatifida Barbara Ertter with John Little 1989-4-2 8108 Contra Costa El Cerrito, at s end of Hillside Park Hillside Park; El Cerrito, Hillside Park Comment
  UC2032846  Sanicula crassicaulis Doran, Andrew Scott 2012-3-20 717 Contra Costa Southern part of Brooks Island, old quarry near gravel conveyer belt and grind house. Comment
  UC536009  Sanicula crassicaulis Laurence S. Jones 1934-4-8 55 Contra Costa Mount Diablo approximately 3 mi surface distance from peak Mount Diablo 609 Comment
  UC735124  Sanicula saxatilis Lincoln Constance, T. Morley, R. H. Shan, W. H. Wagner 1946-4-26 3036 Contra Costa Mount Diablo, Summit sw of lookout Mount Diablo 1158 Comment
  JEPS100052  Satureja douglasii G. Smick 2003-6-6 GAS 213 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC692474  Saxifraga californica Mary L. Bowerman 1931-3-7 554 Contra Costa Mount Diablo, South road below junction Mount Diablo Comment
  UC692475  Saxifraga californica Mary L. Bowerman 1933-4-9 1837 Contra Costa w fork Donner Canyon; Mount Diablo, Donner Canyon 243 Comment
  UC21365  Scandix pecten-veneris Jos. Burtt Davy 1901-4-21 6928 Contra Costa Wildcat Canyon Comment
  JEPS125931  Schinus molle D. W. Taylor 2001-3-1 17609 Contra Costa 1 mile W of Pittsburg, along the abandoned tracks of the Sacramento Northern Railroad, ca 500 m W of the Pittsburg Power Plant. Comment
  POM181474  Schoenoplectus californicus I. L. Wiggins 1930-4-18 4592 Contra Costa Jersey Island. Comment
  JEPS46490  Scirpus W. L. Jepson 1919-1-5 8201 Contra Costa Antioch San Joaquin River (on beach) Comment
  UC692193  Scirpus acutus var. occidentalis Mary L. Bowerman 1938-9-17 3715 Contra Costa by the rivulet and in the marsh Big Spring Mount Diablo, Big Spring 731 Comment
  CDA39113  Scirpus americanus A. G. Murdock 2004-6-4 323 Contra Costa Carquinez Strait Region; Pecheco Marsh. Comment
  CDA39116  Scirpus californicus D. G. Kelch 2004-6-6 4 .229 Contra Costa Carquinez Strait Region; Downtown Martinez. Alhambra Creek near bay and railroad station. Comment
  UC2029146  Scirpus maritimus Barbara Ertter with Dan Norris 1999-11-14 16854 Contra Costa Black Diamond Mines Regional Preserve, Sand Creek on east side Stewartville Trail, dominated by dense stand of Scirpus americanus. Comment
  UC1084402  Scrophularia californica G. Thomas Robbins 1937-4-17 121 Contra Costa near Point Richmond Comment
  UC1301209  Scrophularia californica Helen K. Sharsmith 1962-4-18 4948 Contra Costa vicinity Martinez (near McEwen Rd) 106 Comment
  UC2027718  Scrophularia californica Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15520 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC691605  Scrophularia californica Mary L. Bowerman 1930-6-18 344 Contra Costa Dan Cook Canyon Mt Diablo Comment
  JEPS100051  Scutellaria tuberosa G. Smick 2003-4-1 GAS 113 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1713668  Scutellaria tuberosa unknown 1027 Contra Costa Walnut Creek Comment
  UC1127145  Sedum spathulifolium C. M. Belshaw 1936-5-12 2106 Contra Costa Tassajara Rd. 1 3/4 mi n Tassajara; Mt. Diablo Quad., n of Tassajara Comment
  UC35929  Senecio aronicoides F. T. Bioletti 1894-5-13 Contra Costa Mount Diablo Comment
  CAS-BOT-BC327445  Senecio flaccidus var. douglasii Lewis S. Rose 1955-10-17 55186 Contra Costa Antioch 15 Comment
  RSA762308  Senecio glomeratus William J. Ferlatte, L. Maynard Moe 1970-4-27 1266 Contra Costa San Francisco Bay, Red Rock Island. Comment
  CDA18812  Senecio mikanioides R. M. Case 1999-12-2 PDR 1219291 Contra Costa Along Wildcat Canyon Rd., 1.9 mi NW of intersection of Wildcat Canyon Rd. and Dam Rd., vicinity of Orinda. 0 Comment
  UC1818978  Senecio sylvaticus Barbara Ertter, Gary Schoolcraft 1996-4-7 14567 Contra Costa Point San Pablo in west Richmond, crest of road to yacht harbor, coastal grassland on ridge southwest-facing slope. Comment
  UC691361  Senecio sylvaticus Mary L. Bowerman 1933-5-11 2071 Contra Costa most westerly part of 1931 burn Mount Diablo, Inner Black Hills (Mount Diablo, Inner Black Hills) Comment
  CHSC23334  Senecio vulgaris Willis Ball 1975-2-23 435 Contra Costa Contra Loma Regional Park. In area #1. Ca. 25 yds e of restroom facilities at s end of lake. 30 Comment
  UC2032900  Senecio vulgaris Doran, Andrew Scott 2012-3-20 709 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  CAS-BOT-BC80264  Sequoia sempervirens John Thomas Howell 1927-2-6 2279 Contra Costa San Leandro [Canon] Canyon at Pinehurst 152 Comment
  JEPS48275  Sequoia sempervirens W. L. Jepson 1919-1-25 8208 Contra Costa Upper San Leandro Creek by Moraga Ridge Upper San Leandro Creek, Moraga Ridge Comment
  UC1543053  Sequoia sempervirens Donald G. Nelson 1938-11-6 583 Contra Costa w Moraga (e slope of ridge below water storage tank); Moraga Ridge Comment
Read comments
Jan 25 2008
  SEINET3876309 Image available Sequoia sempervirens James K. Detling 1963-2-15 7 Contra Costa Top of Flicker Ridge near Moraga.; 0 Comment
  CDA33500  Sesbania punicea Slate 2010-7-6 PDR# 1649539 Contra Costa Alamo; 155 Via Bonita 0 Comment
  CDA37437  Sesbania punicea D. G. Kelch, Mike Perlmutter 2011-9-23 11 .764 Contra Costa Antioch. Dow Wetlands. 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
  UCR6068  Sidalcea malviflora Charles Prentiss 1966-4-5 07 Contra Costa San Francisco Bay Region, Tilden Park at Indian Camp, E facing slope across from tennis courts 168 Comment
  UC1555371  Sidalcea malviflora subsp. laciniata Jerry Powell 1988-4-1 1530 Contra Costa Point Molate Richmond (in w Richmond) Comment
  UC18898  Sidalcea malviflora subsp. laciniata W. H. Brewer 1862-4-30 1002 Contra Costa Camp 69 Walnut Creek, Camp 69 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
  CDA31177  Silene gallica D. G. Kelch, Troy McGregor; Ed Biffin 2010-6-1 10 .219 Contra Costa Mt. Diablo. Knobcone Point Rd. Comment
  JEPS111788  Silene gallica D. G. Kelch 2005-3-24 05 .57 Contra Costa Point Pinole: Southern Pt. Pinole 3 Comment
  JEPS111790  Silene gallica D. G. Kelch 2005-4-24 05 .168 Contra Costa Franklin Canyon. Collier Hill. West Carbon 60 Comment
  JEPS73598  Silene gallica L. R. Heckard 1971-4-22 2494 Contra Costa e. Pinole (along R.R. grade near Hwy. 80 crossing) Comment
  CDA23556  Sinapis arvensis D. G. Kelch 2008-3-3 8 .028 Contra Costa Carquinez Strait; Crockett. Under Zampa (Carquinez) Bridge. Comment
  CAS-BOT-BC74938  Sinapis arvensis R. E. Frenkel 1964-2-3 345 Contra Costa On Tassajara Road, 2.1 mile east of Danville. 129 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
  CDA947  Sisymbrium officinale D. G. Kelch 2006-5-5 6 .13 Contra Costa East Bay; Wildcat Canyon Regional Park. Near Wildcat Canyon Road terminus. Comment
  CHSC24841  Sisyrinchium bellum M. A. Callahan 1976-4-15 17 Contra Costa Top of ridge ca. 145m e of house at 1976 Mohawk Dr. Pleasant Hill. 152 Comment
  JEPS112430 Image available Sisyrinchium bellum D. G. Kelch 2003-3-28 03 .78 Contra Costa Rodeo - Lone Tree Point. Southwest corner of town. 2 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
  JEPS112505  Smilacina racemosa A. G. Murdock 2004-4-30 245 Contra Costa Vaca Canyon 165 Comment
  UC691996  Smilacina stellata Mary L. Bowerman 1933-6-20 2332 Contra Costa Donner Canyon Mount Diablo (by stream where streamlet enters from w) 259 Comment
  UC1051044  Solandra guttata N. Floy Bracelin 1942-10-25 2347 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  UC570693  Solanum americanum H. L. Mason 1929-9-21 5445 Contra Costa 1 mi e of junction with road to Antioch (Bordon Highway); Bordon Highway Comment
  CDA14345  Solanum aviculare R. Fonseca 1995-4-27 s.n. Contra Costa 1373 Elizabeth Court, Walnut Creek. 0 Comment
  UC1125032  Solanum umbelliferum R. W. Lundh 1932-8-25 142 Contra Costa Mount Diablo 838 Comment
  UC456217  Solanum umbelliferum I. J. Condit 1908-8-20 Contra Costa Oakley Comment
  UC691760  Solanum umbelliferum Mary L. Bowerman 1931-3-7 553 Contra Costa Mount Diablo, Upper end of South Road Mount Diablo; , South Road Comment
  UCD38575  Solanum umbelliferum Beecher Crampton 1956-5-14 3398 Contra Costa Headwaters of Marsh Creek, southeastern of Mt. Diablo. 640 Comment
  CAS-BOT-BC156305  Solanum umbelliferum A. A. Heller 1908-4-16 8889 Contra Costa East of Antioch 22 Comment
  SEINET6186041  Solanum umbelliferum P. Del Monte 1976-3-28 s.n. Contra Costa Morgan Territory Rd., 1 miles north of Curry Creek Park 122 Comment
  SEINET6186048  Solanum umbelliferum H. M. Hall 1901-4-5 s.n. Contra Costa Region of San Francisco Bay, Mt. Diablo 671 Comment
  SEINET7262086 Image available Solanum xanti A. A. Heller 1908-4-16 8889 Contra Costa E of Antioch Comment
  JEPS100171  Solidago velutina subsp. californica A. Langston 2003-6-19 AL 47 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2032841  Soliva sessilis Doran, Andrew Scott 2012-3-20 712 Contra Costa North east side of Brooks Island Comment
  UC697139  Soliva sessilis Mary L. Bowerman 1931-4-11 689 Contra Costa Pine Canyon , Pine Canyon (Mount Diablo) 121 Comment
  UC69931  Soliva sessilis Jos. Burtt Davy 1898-3-26 4188 Contra Costa near Mt. View Cemetary Comment
  RSA0068482  Soliva sessilis Katie Gallagher, Nick Jensen 2014-4-26 193 Contra Costa Las Trampas Regional Wilderness. 396 Comment
  UC2028125  Soliva sessilis Barbara Ertter with Richard K. Brummitt 1998-5-6 16082 Contra Costa Lower Donner Canyon on north base of Mount Diablo,near Donner Cabin site. Comment
  SEINET11807909  Sonchus asper W. Knight, Knight, I. 1988-1 6219 Contra Costa Suisun Marsh Comment
  CHSC116608  Sonchus asper subsp. asper Lowell Ahart; Josephine Guardino 2016-4-19 20769 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. 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
  CHSC75065  Sonchus oleraceus Roger Thom 1987-5-26 22 Contra Costa 1100 block of Hillside Ave. Walnut Creek. Roadside. 36 Comment
  CAS-BOT-BC374594  Sonchus oleraceus R. E. Frenkel 1963-8-18 263 Contra Costa On Giant Road, 0.4 mile north of ATSF RR crossing, Richmond 15 Comment
  CDA2506  Sorghum halepense D. G. Kelch, A. G. Murdock 2004-5-9 4 .209 Contra Costa Carquinez Strait Region; Crockett - Carquinez Scenic Drive. Scenic Drive west of Bull Valley Staging Area, east of Crockett, CA Comment
  UCD92659  Sorghum halepense Beecher Crampton 1970-3-10 8540 Contra Costa Vasco Road S of Brentwood. Comment
  UC1980318  Sparaxis tricolor Barbara Ertter with C. Shafer, C. Davidson et al. 2011-4-23 20707 Contra Costa Mount Diablo State Park, Curry Point Comment
  RSA720843  Spartina densiflora Barbara Ertter, Richard K. Rabeler 1994-6-18 12835 Contra Costa Point Pinole Regional Shoreline at north end of Richmond, beach on north side Whittell Marsh Comment
  CAS-BOT-BC236610  Spartina foliosa Richard W. Pohl 1952-9-9 7198 Contra Costa Along San Francisco Bay, El Cerrito Comment
  UCD93010  Spartina patens Rolf Mall 1964-11-19 s.n. Contra Costa at head of Suisun Bay between Benecia and Vallejo. Comment
  UC2032829  Spergula arvensis Doran, Andrew Scott 2012-3-20 699 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  RSA760660  Spergula arvensis William J. Ferlatte, L. Maynard Moe 1970-4-27 1256 Contra Costa San Francisco Bay, Red Rock Island. 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
  UC2070547  Spergularia bocconi Barbara Ertter with David Gowen and Michael Park 2017-5-2 22805 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road 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
  UC1563942  Spergularia macrotheca var. longistyla Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8113 Contra Costa 15 air mi sw of Stockton (w and adjacent to Clifton Court Forebay, se Contra Costa County) 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
  CDA24135  Spergularia marina D. G. Kelch 2006-7-14 6 .328 Contra Costa Carquinez Strait; Along Marine Vista Ave immmediately west of Pacheco Slough. East of Martinez. Comment
  UC1563860  Spergularia marina Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8135 Contra Costa alkali sink w and adjacent to Clifton Court Forebay (ca 15 air mi sw of Stockton) 0 Comment
  UC2027786  Spergularia marina Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17630 Contra Costa Northwest flank of Mount Diablo, tributary of Galindo Creek on south side of knoll SW of Mount Zion. 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
  UC2027744  Spergularia rubra Barbara Ertter 1997-1-5 15436 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. 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
  POM151915  Spergularia salina C. F. Baker 1903-4-27 2865 Contra Costa Byron. Comment
  UC1618132  Spergularia villosa Barbara Ertter, Brad Olson 1994-5-7 12747 Contra Costa s end of Point Molate Beach Park w of Richmond (n of bridge to San Rafael, San Francisco Bay, along old railroad grade); San Francisco Bay, Point Molate Beach Park Comment
  CAS-BOT-BC213199  Sphaeralcea Paul F. Covel 1936-5-17 259 Contra Costa South of summit Mt. Diablo. Comment
  JEPS75488  Stachys ajugoides var. rigida P. F. Yorks 1975-5-31 426 Contra Costa ca. 1.5 km s Bear Creek Road (on Hampton Road, n of Briones Reservoir); Hampton Road Natural Preserve 160 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
  UC884274  Stachys ajugoides var. rigida Lewis S. Rose 1935-5-16 35172 Contra Costa Mt. Diablo Comment
  RSA762305  Stachys ajugoides var. rigida William J. Ferlatte, L. M. Moe 1970-4-27 1224 Contra Costa San Francisco Bay, Red Rock Island. Comment
  UCD125808  Stachys albens Malcolm A. Nobs; S. Galen Smith 1949-7-8 943 Contra Costa Otto's Black Bass Resort, 4 miles N of Kingston. Comment
  POM300999  Stachys bullata Mary L. Bowerman 1933-5-18 2119 Contra Costa Mount Diablo, Blackberry Spring. Comment
  JEPS63040  Stachys pycnantha Mary L. Bowerman 1930-6-28 402 Contra Costa Lower Silver Spring Mount Diablo Comment
  RSA721866  Stachys rigida subsp. quercetorum Barbara Ertter, Brad Olson 1994-5-7 12756 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Comment
  CAS-BOT-BC374778  Stebbinsoseris heterocarpa Alice Eastwood 1923-5-4 11714 Contra Costa Mt Diablo Comment
  UCD99423  Stellaria media Susan Keefer 1969-4-26 28 Contra Costa east base of Las Trampas Peak, 1.5 miles southwest of Alamo. Comment
  JEPS51119  Stellaria nitens Rachel G. Mossman 1931-3-22 Contra Costa Grizzly Peak Comment
  SEINET238945 Image available Stenotaphrum secundatum Beecher Crampton 1966-10-18 7817 Contra Costa Kensington Berkeley Hills Blake Garden UC Berkeley Department of landscape architecture. Comment
  CAS-BOT-BC375205  Stephanomeria elata John Thomas Howell 1925-11-1 1544 Contra Costa Moraga Ridge, Oakland Hills Comment
  SEINET7883496 Image available Stephanomeria virgata Lewis S. Rose 1938-1 38308 Contra Costa Marsh Creek, 6 mi. e. of Clayton 152 Comment
  CDA22494  Stephanomeria virgata subsp. pleurocarpa D. G. Kelch, Mike Park 2008-9-1 8 .289 Contra Costa Carquinez Strait; Ozol Rock W of Martinez. Comment
  UC691445  Stephanomeria virgata subsp. pleurocarpa Mary L. Bowerman 1930-7-20 411 Contra Costa near Silver Spring (by the road); Mount Diablo Comment
  UC2028380  Stipa lepida Barbara Ertter 1998-6-20 16243 a Contra Costa Shell Ridge Open Space on NW side of Mount Diablo,below picnic ground at Old Borges Ranch 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
  UC2028379  Stipa pulchra Barbara Ertter 1998-6-20 16243 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo,below picnic ground at Old Borges Ranch Comment
  SEINET10603924  Stipa pulchra Alan A. Beetle 1941-3-28 Beetle 1718 Contra Costa Orinda, in sandy soil of open cut. Comment
  CHSC57360  Streptanthus Willis Ball 1975-3-26 519 Contra Costa Contra Loma Regional Park, in area #3. On hill ca. 100 yds. nw of the dam. 45 Comment
  JEPS124451  Streptanthus albidus subsp. peramoenus Daniel Slakey with Diana Wahl 2015-6-13 129 Contra Costa Mt. Diablo State Park. Both above and below Burma Road; southwest-facing bank above fire trail. Comment
  CAS-BOT-BC87340  Streptanthus hispidus W. H. Brewer 1884-1-1 s.n. Contra Costa Summit Mount Diablo. Comment
  CAS-BOT-BC87341  Streptanthus hispidus H. N. Bolander; Kellock M. D. s.n. Contra Costa Monte De Diablo. Comment
  SBBG72132  Streptanthus hispidus unknown 1895-1 Contra Costa Mt Diablo Comment
  UC1292724  Streptanthus hispidus Freed W. Hoffman 1949-4-17 2766 Contra Costa Eagle Peak, E side, very near the summit Mount Diablo 725 Comment
  UC630664  Streptanthus hispidus John L. Morrison and Lincoln Constance 1938-5-5 3027 Contra Costa along Deer Flat trail ca 1/8 mi n Juniper Camp (steep n-facing talus slope); Mt. Diablo Comment
  UC956587  Streptanthus hispidus Freed W. Hoffman 1949-4-17 2766 Contra Costa e side Eagle Peak (near summit); Mt. Diablo 725 Comment
  UC2028382  Stuckenia pectinata Barbara Ertter 1998-6-20 16251 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Gypsy Flat Pond SW of Old Borges Ranch. Also in Joaquin Pond Comment
  RSA755542  Stuckenia pectinata Barbara Ertter, Brad Olson 1993-8-8 12202 Contra Costa Bishop Ranch Regional Open Space southwest of San Ramon Comment
  UC2062677  Stuckenia striata Barbara Ertter 2005-8-15 18624 Contra Costa Antioch/Oakley Regional Shoreline, under south end of Antioch Bridge between Antioch and Oakley. Comment
  CAS-BOT-BC422908  Stylomecon heterophylla D. E. Breedlove 1970-4-18 17430 Contra Costa At the north edge of Lafayette above Laurel Drive. 243 Comment
  UC50118  Stylomecon heterophylla State Survey 1862-5-17 1001 Contra Costa Mt. Diablo Comment
  UC614558  Stylomecon heterophylla L. Constance, J. L. Morrison 1938-4-5 2193 Contra Costa nw base Mount Diablo (6 mi se of Walnut Creek); Coast Ranges, nw base of Mount Diablo Comment
  UC767113  Stylomecon heterophylla R. F. Hoover 1938-5-4 3341 Contra Costa Marsh Creek Canyon Comment
  CAS-BOT-BC422918  Stylomecon heterophylla W. C. Blasdale 1891-4-26 s.n. Contra Costa Point Isabel Comment
  POM300582  Stylomecon heterophylla Mary L. Bowerman 1932-5-6 1410 Contra Costa Mount Diablo; Mitchell Canyon: West bank by floor of canyon 183 Comment
  UC2062637  Stylomecon heterophylla Barbara Ertter with David Gowen, Mike Park 2004-4-13 18350 Contra Costa Black Diamond Mines Regional Park south of Pittsburg, junction of Arata Overlook Trail and River View Loop Trail. Comment
  UC1746042  Suaeda moquinii Annetta M. Carter 1951-5-13 3056 Contra Costa 3.3 mi. S of Byron. Comment
  RSA438613  Suaeda moquinii E. E. Stanford 1930-08 1867 Contra Costa near Old River Comment
  CAS-BOT-BC269693  Symphoricarpos mollis E. E. Stanford 1930-5-24 1509 Contra Costa Marsh Creek Canyon Comment
  CAS-BOT-BC97699  Symphyotrichum chilense Elizabeth McClintock; Stephen Rae 1978-8-3 s.n. Contra Costa Suisun Bay, Antioch Comment
  CAS-BOT-BC98329  Symphyotrichum subulatum var. parviflorum Walter Knight 1977-7-15 s.n. Contra Costa Antioch Golf Course. Lone Tree Road, at reservoir's edge. Comment
  UC2028456  Tamarix parviflora Barbara Ertter with Joanne Kerbavaz and Mary Bowerman 2000-8-20 17511 Contra Costa North side Mount Olympia in Mount Diablo State Park, bulldozed site of former occupation at Zippe Spring Comment
  JEPS49692  Tellima grandiflora W. L. Jepson 1891-6-9 13461 Contra Costa Fish Ranch Comment
  UC1819074  Tetragonia tetragonoides Barbara Ertter, Drew Hansen 1995-3-28 13935 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St., south of Wildcat Creek Comment
  JEPS112059  Thalictrum fendleri var. polycarpum D. G. Kelch 2004-5-2 04 .176 Contra Costa Crockett - Edwards Canyon Edwards Canyon 68 Comment
  RSA146152  Thinopyrum ponticum T. C. Fuller 1961-9-13 7001 Contra Costa Hwy J4, ca. 4 mi. s.e. of Byron Comment
  CAS-BOT-BC88248  Thysanocarpus curvipes Alice Eastwood 1915-5-30 4554 Contra Costa Mount Diablo. Comment
  CDA1354  Thysanocarpus curvipes D. G. Kelch 2004-3-13 4 .041 Contra Costa Mt Diablo Region.; Road cut along Marsh Creek Rd about 1.5 miles W of Deer Valley Rd. Comment
  JEPS100076  Thysanocarpus curvipes G. Smick 2003-4-8 GAS 126 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS54176  Thysanocarpus curvipes W. L. Jepson 1922-5-23 9666 Contra Costa Mt. Diablo Comment
  UC11004  Thysanocarpus curvipes J. Burtt Davy 1895-4-7 885 Contra Costa Antioch Comment
  UC402567  Thysanocarpus curvipes H. P. Chandler 1900-3-23 Contra Costa Fish Ranch Road; Region of Mount Diablo, Fish Ranch Road Comment
  UC691142  Thysanocarpus curvipes Mary L. Bowerman 1933-5-17 2102 Contra Costa branch of Curry Canyon due s of Olafson's barn Mount Diablo (w-facing bank just n of first fork of canyon); , branch of Curry Canyon 289 Comment
  SEINET3166337  Thysanocarpus curvipes subsp. curvipes P. J. Alexander, C. D. Bailey 2009-3-30 970 Contra Costa Mount Diablo State Park, 0.4 miles NE of the summit of Mt. Diablo, SW side of the saddle between the main peak and North Peak, 8.7 miles ESE of central Walnut Creek. 908 Comment
  UC11038  Thysanocarpus curvipes subsp. curvipes W. H. Brewer 1862-5-12 1083 Contra Costa Mt. Diablo Comment
  POM202804  Thysanocarpus curvipes var. curvipes L. S. Rose 1933-4-17 33096 Contra Costa Antioch Comment
  SEINET10482179  Thysanocarpus curvipes var. elegans John T. Middleton 1936-4-18 Middleton 140 Contra Costa Briones valley. Comment
  UC691136  Thysanocarpus laciniatus Mary L. Bowerman 1933-4-26 1933 Contra Costa Perkins Canyon branch between the main e ridge of North Peak and the ridge to its s Mount Diablo (Mount Diablo); , Perkins Canyon branch, North Peak 487 Comment
  CAS-BOT-BC67283  Thysanocarpus radians T. S. Brandegee 1883-5-1 s.n. Contra Costa Antioch. Comment
  UC1795727  Torilis nodosa Barbara Ertter, Mary Bowerman 1995-6-11 14254 Contra Costa Shell Ridge Recreation Area southeast of Walnut Creek, bank of Indian Creek above Indian Valley Pond, partial sun on Franciscan layer. 76 Comment
  CAS-BOT-BC172936  Toxicodendron diversilobum Alice Eastwood 1915-5-30 4551 Contra Costa Mt. Diablo Comment
  CHSC75068  Tragopogon porrifolius Roger Thom 1987-5-18 11 Contra Costa 0.15 mi. from west intersection with Stanley Blvd. on Camino Diablo. Lafayette. Shoulder of road. 30 Comment
  JEPS107101  Tragopogon porrifolius Barbara Ertter 1991-5-12 9812 Contra Costa Point Isabel Regional Shoreline in SW corner of El Cerrito; along old railroad right-of-way between San Francisco Bay and Salicornia marsh. Comment
  UCD35136  Tragopogon porrifolius Beecher Crampton 1949-5-8 451 Contra Costa Richmond. Comment
  JEPS100096  Tribulus terrestris A. Langston 2003-7-9 AL 66 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  SEINET13948212 Image available Trichostema lanceolatum Lewis S. Rose 1953-1 53095 Contra Costa Mt. Diablo, W slope; 1600 ft alt. 488 Comment
  CDA23601  Trifolium albopurpureum D. G. Kelch 2008-4-12 8 .035 Contra Costa Mt Diablo. Mitchell Canyon. Along road looping north of main Mitchell Canyon Rd. Comment
  RSA161241  Trifolium albopurpureum Peter H. Raven, H. L. Mason, R. Ornduff 1957-4-4 10575 Contra Costa Hill near road 6.3 miles W. of Byron. Comment
  UCD38574  Trifolium albopurpureum Beecher Crampton 1956-5-14 3399 Contra Costa Headwaters of Marsh Creek, southeast of Mt. Diablo. 640 Comment
  UC555481  Trifolium albopurpureum var. albopurpureum H. L. Mason 1928-4-26 4384 Contra Costa Berkeley-Oakland hills Comment
  UC555486  Trifolium albopurpureum var. albopurpureum H. L. Mason 1929-3-29 5119 Contra Costa Mt. Diablo 762 Comment
  UC555617  Trifolium albopurpureum var. albopurpureum H. L. Mason 1929-5-7 5261 Contra Costa Moraga Ridge Comment
  UC165554  Trifolium albopurpureum var. olivaceum J. Burtt Davy 1895-1 955 Contra Costa Antioch Comment
  UC16605  Trifolium albopurpureum var. olivaceum W. H. Brewer 1862-4-30 1019 Contra Costa Camp 69 Walnut Creek Comment
  JEPS65682  Trifolium albopurpureum var. olivaceum Willis L. Jepson 1891-6-9 13671 Contra Costa Fish Ranch Berkeley Hills Comment
  UC555601  Trifolium bifidum var. decipiens H. L. Mason 1929-4-25 5205 Contra Costa Marsh Creek Rd Comment
  POM194562  Trifolium bifidum var. decipiens Ynez Mexia 1929-4-21 2375 Contra Costa Moraga Valley Comment
  POM203635  Trifolium bifidum var. decipiens J. T. Howell 1933-5-14 11264 Contra Costa Hills east of St. Marys college Comment
  CDA4301  Trifolium campestre D. G. Kelch, A. G. Murdock 2005-5-6 5 .22 Contra Costa Carquinez Strait Region; Franklin Canyon. East of Christie Road. South of Route 4. Comment
  CDA27926  Trifolium ciliolatum D. G. Kelch, A. G. Murdock 2003-4-3 3 .35 Contra Costa Carquinez Strait Region; Cummings Skyway. South of Cummings Skyway and Crockett Boulevard. Comment
  UC146899  Trifolium ciliolatum Katharine Brandegee may 1907 Contra Costa Antioch Comment
  UC16457  Trifolium ciliolatum Ivar Tidestrom 1895-4-13 Contra Costa near Lafayette Comment
  CHSC116610  Trifolium depauperatum var. amplectens Lowell Ahart; Josephine Guardino 2016-4-19 20756 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 dmiles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  UC165574  Trifolium depauperatum var. amplectens J. Burtt Davy 943 Contra Costa Antioch Comment
  UC165575  Trifolium depauperatum var. amplectens J. Burtt Davy Apr 7-8 1895 944 Contra Costa Antioch Comment
  UC630926  Trifolium depauperatum var. depauperatum P. B. Kennedy 1928-4-19 10049 Contra Costa near Golf Links; Byron Hot Springs Comment
  UCSC011139  Trifolium depauperatum var. laciniatum Randy Morgan 1999-5-30 3509 Contra Costa Byron, Seed originally from Armstrong Road Comment
  UC147173  Trifolium depauperatum var. truncatum Ivar Tidestrom 1895-4-13 Contra Costa near Lafayette Comment
  UC683346  Trifolium depauperatum var. truncatum Edw. L. Greene 1895-4-7 Contra Costa near Antioch Comment
  JEPS100104  Trifolium dubium G. Smick GAS 108 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  RSA0027401  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
  UC16537  Trifolium fucatum J. Burtt Davy 1900-3-24 6531 Contra Costa Stege Comment
  RSA195421  Trifolium fucatum var. fucatum C. P. Smith 1922-5-20 3532 Contra Costa Lafayette - trolly line. Comment
  RSA90945  Trifolium fucatum var. fucatum F. W. Peirson, Mabel B. Peirson 1926-4-10 6638 Contra Costa Between Walnut Creek and Martinez. Comment
  UC1618357  Trifolium gracilentum Barbara Ertter, Chris Thayer 1993-5-7 11712 Contra Costa 1/2 mi n of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land e of Tilden Park (s of Wildcat Canyon Road); East Bay Municipal Utilities District Comment
  UC555592  Trifolium gracilentum H. L. Mason 1928-4-13 4301 Contra Costa Richmond waterfront Comment
  UC70197  Trifolium gracilentum J. Burtt Davy May 1898 Contra Costa Danville Comment
  UCD146715  Trifolium incarnatum G. F. Hrusa; D. Crowe 1998-5-8 14364 Contra Costa Sacramento-San Joaquin River Delta. Within Dow Chemical property at Pittsburg. 10 Comment
  UC1197238  Trifolium macraei J. P. Tracy 1900-3-24 623 Contra Costa 50 ft Point Richmond Comment
  UC555606  Trifolium macraei H. L. Mason 1928-4-13 4304 Contra Costa Richmond waterfront Comment
  UC555611  Trifolium microdon H. L. Mason 1928-4-13 4306 Contra Costa Richmond waterfront Comment
  UC1606302  Trifolium microdon Barbara Ertter, Chris Thayer 1993-5-7 11711 Contra Costa ca 1/2 mi n Vollmer (=Bald) Peak (east of Tilden Park, grazing land on lower slopes of Wildcat Canyon Rd); East Bay Municipal Utilities District land 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
  UC692669  Trifolium microdon Mary L. Bowerman 1935-4-19 2872 Contra Costa ca 7 mi w Northgate (by rd, ridge w of the power poles, above the rd junction); Mount Diablo 670 Comment
  UC16753  Trifolium obtusiflorum W. H. Brewer 1862-4-30 1005 Contra Costa Camp 69 Walnut Creek Comment
  JEPS4442  Trifolium oliganthum W. L. Jepson 1891-6-9 13698 Contra Costa Fish Ranch Comment
  UC2027925  Trifolium oliganthum Barbara Ertter with Dan Norris 2001-4-15 17608 Contra Costa West side Mount Diablo, south end of Hanging Valley Trail. Comment
  UC2028985  Trifolium oliganthum Barbara Ertter 2000-5-14 17010 Contra Costa Donner Canyon on north side of Mount Diablo, SW end of Falls Trail between Middle Trail and Donner Creek crossing. Comment
  CDA31447  Trifolium repens D. G. Kelch 2006-8-12 6 .378 Contra Costa Carquinez Strait; Martinez. Along Alhambra Creek near train station. Comment
  UC1197525  Trifolium willdenovii J. P. Tracy 1900-3-24 604 Contra Costa near Stege 9 Comment
  UC1377676  Trifolium willdenovii W. J. Dress 1951-5-9 3311 Contra Costa just w Orinda Comment
  UC16730  Trifolium willdenovii J. Burtt Davy 1895-4-7 991 Contra Costa Antioch Comment
  UC407376  Trifolium willdenovii Ira L. Wiggins 1930-4-17 4575 Contra Costa 1/4 mi s Byron Comment
  UC55885  Trifolium willdenovii H. M. Hall 1901-3-22 1705 Contra Costa Martinez Comment
  POM18879  Trifolium willdenovii H. P. Chandler 1901-3-22 841 Contra Costa Concord. Comment
  UC555573  Trifolium willdenovii H. L. Mason 1929-3-29 5132 Contra Costa 2 mi above Clayton (Marsh Creek Rd) Comment
  JEPS112457  Triglochin maritima D. G. Kelch 2003-8-13 03 .109 Contra Costa Martinez Marsh 0 Comment
  JEPS127670  Triglochin scilloides Barbara Ertter with David Gowen and Michael Park 2017-5-2 22800 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  JEPS21841  Trillium chloropetalum Bryce G. Decker 1958-3-7 1 Contra Costa above 60 Oak Dr. Orinda 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
  CHSC21622  Triphysaria eriantha Willis Ball 1975-3-15 496 Contra Costa Contra Loma Regional Park. In area #10. In flat area 200 yds ne of dam. 36 Comment
  JEPS15190  Triphysaria eriantha subsp. eriantha R. C. Wilson 1935-3-26 144 Contra Costa 2 mi n Walnut Creek; Concord Quad. Comment
  JEPS23787  Triphysaria eriantha subsp. eriantha Rimo Bacigalupi with Paul C. Hutchison and John Weiler 1959-3-19 6970 Contra Costa junction of Holey Road and Byron Road about 2.9 mi se Byron 4 Comment
  UC1301191  Triphysaria eriantha subsp. eriantha Helen K. Sharsmith 1963-4-7 5288 Contra Costa e side Kirker Pass road w Antioch (San Francisco Bay Region); , Kirker Pass Road 152 Comment
  UC1818944  Triphysaria eriantha subsp. eriantha Barbara Ertter, Mary Bowerman et al. 1995-5-7 14042 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
  JEPS126600  Triphysaria pusilla Lowell Ahart, Josephine Guardino 2016-4-19 20780 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant, Byron Hot Springs USGS 7.5' Quadrangle. 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. Comment
  JEPS15155  Triphysaria pusilla C. M. Belshaw 1936-5-7 2046 Contra Costa 2 mi s San Ramon; Mt. Diablo Quad. Comment
  CDA41896  Triphysaria versicolor subsp. faucibarbata D. G. Kelch 2005-3-26 5 .097 Contra Costa Carquinez Strait Region; Pinole Peak. Fernandez Ranch, south side - road from Perreria Road to Pinole Peak Ridge. Comment
  CDA41897  Triphysaria versicolor subsp. faucibarbata D. G. Kelch 2005-4-15 5 .145 Contra Costa Carquinez Strait Region; Rodeo Creek. EBRP land. West of Cummings Skyway near summit (Old C&H Sugar diatomaceous earth dump). Comment
  UCD36927  Trisetum canescens Beecher Crampton 1956-5-14 3423 Contra Costa 2 miles west of Martinez, on road to Crockett. Comment
  JEPS112493  Triteleia hyacinthina D. G. Kelch 2005-4-24 05 .169 Contra Costa Franklin Canyon. Collier Hill. West Carbon 60 Comment
  CAS-BOT-BC521582  Triteleia hyacinthina Mary L. Bowerman 1938-6-3 3651 Contra Costa Rock City 518 Comment
  UC2027806  Triteleia hyacinthina Barbara Ertter with Holly Forbes 1997-4-20 15543 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  CAS-BOT-BC526327  Triteleia laxa Barrett Anderson 1987-4-30 3501 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road 125 Comment
  CAS-BOT-BC526331  Triteleia laxa James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  POM203716  Triteleia laxa J. T. Howell 1931-5-12 6468 Contra Costa Oakland Hills Comment
  SD39092  Triteleia laxa Mc Callum 1933-4-24 3700 Contra Costa Adobe field near wlnut Creek. Comment
  CAS-BOT-BC67356  Tropidocarpum capparideum Alice Eastwood 1914-3-14 3824 Contra Costa Byron Springs. Comment
  LA204485  Tropidocarpum capparideum Robert F. Hoover; 1936-3-19 806 Contra Costa Byron Hot Springs Comment
  RSA428387A  Tropidocarpum capparideum Edward L. Greene 1889-3-24 s.n. Contra Costa Byron Comment
  CAS-BOT-BC67402  Tropidocarpum gracile Alice Eastwood 1914-3-14 3783 Contra Costa Byron Springs. Comment
  CAS-BOT-BC67410  Tropidocarpum gracile James McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  CAS-BOT-BC67411  Tropidocarpum gracile Volney Rattan s.n. Contra Costa Antioch. Comment
  UC64343  Tropidocarpum gracile H. M. Hall 1901-4-5 1742 Contra Costa Pine Canyon Region of San Francisco Bay, Mt. Diablo Comment
  UC691063  Tropidocarpum gracile Mary L. Bowerman 1933-3-18 1750 Contra Costa floor of canyon above Olafson's; Mount Diablo, Curry Canyon Comment
  SEINET12007177  Tropidocarpum gracile L. S. Rose 1934-1 34066 Contra Costa 6 mi E of Clayton Comment
  JEPS111914  Typha angustifolia Dean G. Kelch and Andrew G. Murdock 2003-8-13 DGK 03 .105 Contra Costa Martinez Marsh. Comment
  POM319572  Typha domingensis Patricia Wilder 1961-8-27 1069 Contra Costa Walnut Creek, near Calif. Hwy 24. 24 Stanley Court. 42 Comment
  UC1795648  Ulmus minor Barbara Ertter, Rich Rabeler 1994-6-18 12837 Contra Costa Pt. Pinole Regional Shoreline at north end of Richmond; northeast corner of park, near jct. Marsh Trail & Cook's Point Trail. Comment
  UC2028231  Ulmus minor Barbara Ertter 1998-11-15 16465 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2070596  Ulmus minor Barbara Ertter with Chris Thayer 2002-4-13 17826 Contra Costa North side of Mount Diablo, on north face of Mount Olympia. Comment
  CHSC22748  Umbellularia californica Robert A. Schlising 1962-2-21 2078 Contra Costa Berkeley-Oakland Hills of westernmost part of county. Comment
  JEPS112487  Umbellularia californica D. G. Kelch 2003-2-7 03 .37.B Contra Costa Franklin Canyon 115 Comment
  UC1126325  Umbellularia californica H. S. Yates 1936-3-14 5362 Contra Costa Marsh Creek 381 Comment
  CAS-BOT-BC91091  Umbellularia californica H. E. McMinn 1925-1-1 s.n.<