Search Results — 2000 specimen records retrieved (1340 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
  UC1719704  Acacia retinodes Barbara Ertter with Richard Rabeler 1994-6-2 12820 Contra Costa edge of San Francisco Bay on point S of Central Avenue at Point Isabel Comment
  UC1779711  Acacia verticillata Rudolf Schmid 1997-5-21 1997 -12 Contra Costa Hillside Natural Area, El Cerrito; NW of King Ct. entrance. 175 Comment
  JEPS13005  Acaena pinnatifida var. californica Rimo Bacigalupi with G. T. Robbins and Keith Harrison 1955-5-13 5062 Contra Costa opposite Mira Vista Country Club (hilltop just to w. of Arlington Ave., hills opposite El Cerrito) 198 Comment
  UC1050843  Acanthus mollis var. latifolius N. Floy Bracelin 1942-6-14 2133 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS42649  Acer macrophyllum W. L. Jepson 1908-4-4 3005 Contra Costa West Branch San Pablo Creek Comment
Read comments Jul 7 2011
  UC1199010  Acer negundo Joseph P. Tracy 1934-4-30 13187 Contra Costa Lafayette 152 Comment
  UC2028958  Acer negundo Barbara Ertter 2000-7-16 17379 Contra Costa Castle Rock Regional Recreation Area on SW flank of Mount Diablo, lower Pine Creek with sporadic surface water Comment
  SEINET3195243 Image available Acer negundo var. californicum Annetta Carter 1937-3-28 1227 Contra Costa Creek bank, Moraga Valley, 2.5 miles north of Moraga 180 Comment
  CAS-BOT-BC334184  Acer negundo var. californicum John Thomas Howell 1925-11-7 1549 Contra Costa Between Pinehurst and Canyon Station, San Leandro Canyon Comment
  JEPS111751  Achillea millefolium D. G. Kelch 2005-4-15 05 .152 Contra Costa Rodeo Creek EBRP land. West of Cummings Skyway near summit (Old C&H Sugar diatomaceous earth dump) 220 Comment
  PASA2309  Achyrachaena mollis Annetta Carter 1929-3-31 Contra Costa near Clayton Comment
  UC1084392  Achyrachaena mollis G. Thomas Robbins 1937-4-25 145 Contra Costa 2 mi e Alamo Comment
  UC1733837  Achyrachaena mollis Kay H. Beach 1941-4-30 1081 Contra Costa 5 mi W of Byron; Marsh Creek Road 30 Comment
  CAS-BOT-BC29883  Achyrachaena mollis Alice Eastwood 1914-1-1 s.n. Contra Costa unspecified Comment
  JEPS112328  Acmispon glaber Dean G. Kelch and Andrew G. Murdock 2004-7-16 04 .319 Contra Costa Martinez- South; County: Contra Costa; Pine St. Entrance Rte 4 heading west. Martinez, CA. Comment
  UCD104120  Acmispon glaber P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo Summit. Comment
  UCD104491  Acmispon wrangelianus Morris Halperin 1929-4-21 s.n. Contra Costa Moraga Valley. Comment
  CDA19145  Acroptilon repens R. M. Case 2001-7-1 PDR P 088757 Contra Costa San Francisco Bay Region; In East Bay Municipal Utility District Water Department on Hookston Rd 1, Pleasant Hill. 0 Comment
  UCSB29426  Actaea rubra Havlik, Neil 1969-7-3 Contra Costa along Grizzly Pk. Trail on the northeast slope of Grizzly Pk., Berkeley Hills 426 Comment
  RSA498006  Adenostoma fasciculatum Robert F. Hoover 1939-04 20470 Contra Costa Head west branch Markley Canyon 305 Comment
  SEINET3868330 Image available Adiantum jordanii Clayton Newberry 1994-4-30 7255 Contra Costa Mount Diablo State Park, trail from Mitchell Cn. Prkng to Donner Cr.; 0 900 Comment
  CDA19069  Aegilops triuncialis D. Petersen 2001-6-2 s.n. Contra Costa San Francisco Bay Area; NW corner of Camp Parks Military Reservation E of Dublin, ~ 2000 ft E of Dougherty Rd. 198 Comment
  CAS-BOT-BC206881  Aesculus californica Barrett Anderson 1987-4-30 3494 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD. 125 Comment
  CHSC22658  Aesculus californica Robert A. Schlising 1965-1-24 2740 Contra Costa North of Briones Reservoir along Hampton Road; 1.1 mi S of Jct with Garcia Ranch Road. Comment
  OBI62809  Aesculus californica John Osborne 1970-11-21 11 Contra Costa 3173 Somerset Dr., Lafayette 76 Comment
  UC692716  Aesculus californica Mary L. Bowerman 1930-6-3 226 Contra Costa 1.9 mi from Mount Diablo North Road entrance; Mount Diablo Comment
  UC2061505  Ageratina adenophora Dean G. Kelch 2016-5-27 16 .132 Contra Costa Miller-Knox Hill. Comment
  SEINET11854999  Agoseris grandiflora W. L. Jepson 1943-1 20846 Contra Costa Moraga Ridge Comment
  UCD128436  Agoseris grandiflora Beecher Crampton 1956-5-14 3400 Contra Costa Mount Diablo, south of Windy Point. Comment
  UCD36920  Agoseris grandiflora Beecher Crampton 1956-5-14 3400 Contra Costa Mount Diablo, south of Windy Point. Comment
  SEINET6738507 Image available Agoseris heterophylla H. P. Chandler 1901-4-5 976 A Contra Costa Mt. Diablo Comment
  UC29360  Agoseris heterophylla var. heterophylla F. T. Bioletti 1894-5-13 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC13350  Agoseris retrorsa Alice Eastwood 1916-5-30 4500 Contra Costa Mount Diablo Comment
  CDA15254  Agrostis avenacea G. F. Hrusa, D. Crowe 1998-5-8 14385 Contra Costa Sacramento Delta; Dow Ecological Reserve on Dow Chemical property at Pittsburg. Comment
  RSA666409  Agrostis avenacea Barbara Ertter, Brad Olson 1991-9-28 10831 Contra Costa San Pablo Reservoir between Orinda and El Sobrante 91 Comment
  UC1618364  Agrostis avenacea Barbara Ertter, Brad Olson 1991-9-28 10831 Contra Costa San Pablo Reservoir between Orinda and El Sobrante (at s. end of reservoir); San Pablo Reservoir 91 Comment
  UC2028508  Agrostis avenacea Barbara Ertter with Tony Morosco 1998-9-18 16425 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, north quarry area [subsequently developed] Comment
  CAS-BOT-BC127342  Agrostis exarata Mary L. Bowerman 1933-9-9 2434 Contra Costa Mount Diablo. Frog Pond. Comment
  CDA28132  Agrostis exarata D. G. Kelch 2003-8-13 3 .113 Contra Costa Carquinez Strait; Salt Marsh E of Marina. Martinez. Comment
  RSA0029051  Agrostis exarata Barbara Ertter 1999-6-12 16711 Contra Costa Black Hawk Ridge road on south side of Mount Diablo, road crossing at confluence of NE and E forks of Sycamore Creek. 396 Comment
  UCD37372  Agrostis exarata var. pacifica Beecher Crampton 1959-9-3 5455 Contra Costa Contra Costa County, 2 miles north of city of Orinda, Bear Creek, East Bay Municipal Utilities District Project. Comment
  UC1795795  Agrostis hallii Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14221 Contra Costa Mt. Diablo southeast of Walnut Creek, north-facing slope north of Curry Point, grassy semishade at edge of oak woodland. 518 Comment
  UC2028375  Agrostis hallii Barbara Ertter with Dan Norris 1998-6-18 16229 Contra Costa Black Hawk Ridge Road below Knobcone Point Road, south side of Mount Diablo Comment
  CDA962  Agrostis pallens D. G. Kelch 2005-6-14 5 .33 Contra Costa East Bay; San Pablo. North Alvarado Park, south of San Pablo Dam Rd. Comment
  UC2070613  Agrostis stolonifera Barbara Ertter with Chris Thayer, Dianne Lake et al. 2001-5-26 17654 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch. Comment
  UC50548  Agrostis viridis Jos. Burtt Davy 1897-9-4 4082 Contra Costa Stege 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
  UC1108976  Aira caryophyllea Leo and Shirley Koch 1947-4-20 1343 Contra Costa 0.5 mi s Giant (meadow between golf course and railroad) 3 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
  CAS-BOT-BC175360  Allenrolfea occidentalis J. Burtt Davy 1898-5-1 s.n. Contra Costa Byron Springs, Mt. Diablo region Comment
  JEPS127675  Allenrolfea occidentalis Barbara Ertter with David Gowen and Michael Park 2017-5-2 22815 Contra Costa West Marsh Creek State Park (former Cowell Ranch) SW of Brentwood, Briones Valley east of Deer Valley Road. Comment
  POM164980  Allenrolfea occidentalis Jos Burtt Davy 1898-05 s.n. Contra Costa Byron Springs, Mt. Diablo region. Comment
  RSA367156  Allium attenuifolium H. de Forest 1930-4-6 s.n. Contra Costa Unspecified. Comment
  UC188708  Allium falcifolium J. W. Congdon 1896-5-30 Contra Costa Summit Mt. Diablo Mt. Diablo Comment
  CAS-BOT-BC469112  Allium falcifolium L. R. Abrams 1921-5-25 8038 Contra Costa Mt. Diablo, Summit Comment
  UC3108  Allium serra W. H. Brewer 1862-4-24 994 Contra Costa Martinez Comment
  UC766759  Allium serra R. F. Hoover 1936-3-19 808 Contra Costa Pittsburg Comment
  CAS-BOT-BC475532  Allium serra John Thomas Howell 1933-5-14 11284 Contra Costa Hills east of St. Mary's College Comment
  CAS-BOT-BC475537  Allium serra Volney Rattan 1883-4-1 s.n. Contra Costa Martinez Comment
  RSA34737  Allium serra R. C. Rollins 1946-3-25 3043 Contra Costa Western slope of Mount Diablo. Comment
  RSA59637  Allium serra Verne Grant, Alva Grant 1950-5-13 8896 Contra Costa Saddle between N & Meridian peaks, Mt. Diablo. Comment
  UC3105  Allium serra H. P. Chandler 1900-3-23 573 Contra Costa Pleasant Valley Comment
Read comments Aug 23 2008
  CAS-BOT-BC476609  Allium unifolium Mary L. Bowerman 1931-4-19 750 Contra Costa Mitchell Canyon: Small colony near upper end of road. Comment
  RSA172743  Allophyllum gilioides Mary L. Bowerman 1935-4-26 2904 Contra Costa West of Indian Ceremonial Spring, three miles by road above junction. 1021 Comment
  CAS-BOT-BC170934  Alnus rhombifolia Alice Eastwood 1921-4-18 s.n 10294 Contra Costa Antioch Comment
  JEPS68944  Alnus rhombifolia Edward Lee 1935-2-10 1272 Contra Costa Wildcat Creek Berkeley, Berkeley Hills Comment
  RSA21881  Alnus rhombifolia L. S. Rose 1938-10-28 38307 Contra Costa Marsh Creek, 6 miles E of Clayton. 152 Comment
  RSA452847  Alnus rubra M. B. Dunkle 1931-7-18 2526 Contra Costa Strawberry Canyon, Berkeley. San Francisco Bay Region. Comment
  UC1952849  Aloe striatula Barbara Ertter 2007-5-20 19027 Contra Costa Berkeley Hills SE of UC campus, along path north of Dwight Way extension at head of Panoramic Way Comment
  CAS-BOT-BC137970  Alopecurus saccatus John Thomas Howell 1953-4-26 28936 Contra Costa Between Byron and Byron Hot Springs. Comment
  POM300587  Amaranthus albus Mary L. Bowerman 1932-8-27 1515 Contra Costa Pond south of Turtle Rock Comment
  UC691916  Amaranthus retroflexus Mary L. Bowerman 1938-10-15 3727 Contra Costa North Road, by trail to w of spring Mount Diablo 213 Comment
  UC1948953  Ambrosia chamissonis William J. Ferlatte, L. Maynard Moe 1970-4-27 1219 Contra Costa San Francisco Bay: Red Rock Island Comment
  CAS-BOT-BC55589  Ambrosia psilostachya Walter Knight; Joanne Dean 1978-8-14 3115 Contra Costa Browns Island Comment
  CDA6723  Ambrosia trifida J. Clark, C. Beutler 1976-9-1 Contra Costa 2161 Youngs Court, Walnut Creek. 0 Comment
  CAS-BOT-BC222221  Amsinckia John Thomas Howell 1934-4-8 11814 Contra Costa 7 miles from Clayton on road to Livermore Comment
  CAS-BOT-BC222235  Amsinckia John Thomas Howell 1933-3-29 10912 Contra Costa Nortonville hills Comment
  CAS-BOT-BC222303  Amsinckia douglasiana A. A. Heller 1938-4-9 15016 Contra Costa 3 miles southwest of Antioch Comment
  CHSC23356  Amsinckia intermedia Willis Ball 1975-2-23 448 Contra Costa Contra Loma Regional Park. In area #2. On s side of hill ca. 50 yds. ne of single restroom at sw end of reservoir, approximately 1/4 way up large hill. 38 Comment
  RSA0090977  Amsinckia intermedia Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8130 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  RSA201409  Amsinckia intermedia J. T. Howell 1933-5-14 11225 Contra Costa St. Mary s College Comment
  SD211561  Amsinckia intermedia Barbara Ertter, Jim Jokerst et al 1989-4-5 8130 Contra Costa Alkalai sink West and adjacent to Clifton Court Forebay, circa 15 airmiles Southwest of Stockton. Comment
  UC1094057  Amsinckia intermedia Francia Chisaki 1954-4-15 590 Contra Costa on Hwy #40 near it's junction with Hwy #4, between Pinole and Hercules Comment
  LA29456  Amsinckia lunaris Francia Chisaki; Peter Kamb 1952-5-4 2275 Contra Costa Bear Creek Road, 1.5 mi. E of Orinda-Richmond road (leaving this road ca. 1 mi. N of Orinda) Comment
  UC1084623  Amsinckia lunaris Francia Chisaki, Peter Kamb Ray 1952-5-4 2275 Contra Costa 1.5 mi e Orinda-Richmond road (leaving this road ca 1 mi n of Orinda); Bear Creek Road Comment
  SD71397  Amsinckia menziesii John Thomas Howell 1933-5-14 11224 A Contra Costa St. Mary's College Comment
  SEINET12280508  Amsinckia spectabilis L. S. Rose 1932-1 3272 Contra Costa Byron Comment
  CAS-BOT-BC26962  Amsinckia strigosa Alice Eastwood 1914-3-14 3773 Contra Costa Byron Springs Comment
  UC24591 Image available Amsinckia tessellata Brewer 1862-1 1119 Contra Costa near Mt. Diablo; ; near Mt. Diablo Comment
  CHSC75115  Anagallis arvensis Roger Thom 1987-5-26 21 Contra Costa 2800 block of Buena Vista Ave. Walnut Creek. 30 Comment
  JEPS127041  Anagallis arvensis Lowell Ahart, Josephine Guardino 2016-4-19 20784 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
  CAS-BOT-BC400259  Anemopsis californica Rimo Bacigalupi 1926-4-30 1347 Contra Costa About 3 miles east of Walnut Creek on Mt Diablo Road Comment
  UC4888  Anemopsis californica W. L. Jepson May 23 1891-May 24 1891 Contra Costa near Mount Diablo Comment
  JEPS111621  Angelica californica D. G. Kelch 2004-7-9 04 .308B Contra Costa Vaca Canyon Vaca Canyon 165 Comment
  UC691885  Angelica californica Mary L. Bowerman 1932-10-16 1631 Contra Costa Mount Diablo, Donner Canyon Trail Mount Diablo; , Donner Canyon Trail Comment
  UC691887  Angelica californica Mary L. Bowerman 1935-3-16 2740 Contra Costa Mount Diablo, e fork of Arroyo del Cerro Arroyo del Cerro; Mount Diablo, Arroyo del Cerro 274 Comment
  UC692562  Angelica californica Mary L. Bowerman 1935-6-21 3149 Contra Costa Mount Diablo, e fork of Arroyo del Cerro Arroyo del Cerro; Mount Diablo, Arroyo del Cerro 274 Comment
  UC1594182  Anthemis cotula Jerry Powell 1992-6-17 1692 Contra Costa Richmond Field Station Comment
  UC40554  Anthemis cotula Brewer May 1862 1177 Contra Costa Comment
  JEPS107105  Anthriscus caucalis Barbara Ertter, Lisa Schultheis 1995-4-27 14015 Contra Costa Lime Ridge open space northwest of Mt. Diablo in Walnut Creek; north-facing open brushy slope with scattered oaks along extension of Valley View road. 182 Comment
  CAS-BOT-BC26282  Antirrhinum elmeri A. D. E. Elmer 1903-6-1 4809 Contra Costa Mount Diablo Comment
  JEPS107090  Antirrhinum majus Barbara Ertter, Brad Olson 1994-5-7 12744 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge Comment
  UC1050713  Antirrhinum majus subsp. tortuosum N. Floy Bracelin 1941-4-13 1137 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CAS-BOT-BC447664  Aphanes arvensis Mary L. Bowerman 1931-3-29 620 Contra Costa Mount Diablo, East Cave Point ridge, Comment
  UC691119  Aphanes occidentalis Mary L. Bowerman 1931-3-29 620 Contra Costa East Cave Point Ridge; Mount Diablo Comment
  UC2029053  Aphanes occidentalis Barbara Ertter 2000-3-30 16905 Contra Costa North base of Mount Diablo, lower Mitchell Canyon ca 1.5 miles from trailhead. Comment
  UC20822  Apiastrum angustifolium Edw. L. Greene 1892-6-20 Contra Costa Mount Diablo 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
  UC2046342  Apium graveolens Barbara Ertter July 1999 s.n. Contra Costa Cerrito Creek just east of Pierce Street. Alameda/Contra Costa County line. Comment
  JEPS111632  Apocynum cannabinum D. G. Kelch 2004-7-9 04 .306 Contra Costa Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite 60 Comment
  UC2029068  Aquilegia eximia Barbara Ertter 2000-7-29 17436 Contra Costa Donner Basin on north side of Mount Diablo, Middle Trail below Falls Trail junction, at crossing of W Fork Donner Creek, with Berberis, shaded, surface water. 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
  JEPS77022  Arbutus menziesii Robert M. Lloyd 1963-3-17 2147 Contra Costa 1 mi s of Moraga (on road to Castro Valley) Comment
  CAS-BOT-BC407799  Arceuthobium campylopodum R. Bacigalupi 1922-9-24 81 Contra Costa Mitchell Canon, Mt. Diablo Comment
  UC692041  Arceuthobium campylopodum Mary L. Bowerman 1930-6-22 374 Contra Costa above main canyon (Mitchell Canyon Trail); Mount Diablo Comment
  UC692043  Arceuthobium campylopodum Mary L. Bowerman 1931-10-31 1065 Contra Costa south Rd near junction Mount Diablo Comment
  JEPS98884  Arctostaphylos R. Gankin, J. Roof, R. Hildreth, R. Brewer, W. and I. Knight 1964-10-7 Contra Costa nature trail, head of Dan Cook Canyon Mount Diablo Comment
  CAS-BOT-BC24105  Arctostaphylos auriculata Mary L. Bowerman 1933-3-25 1771 Contra Costa Emmons Canyon, Diablo Stock Farm (Stone Valley) Canyon: Comment
  CAS-BOT-BC24120  Arctostaphylos auriculata Alice Eastwood 1922-3-17 11083 Contra Costa Mt. Diablo Comment
  RSA70860  Arctostaphylos auriculata L. S. Rose 1934-2-28 34039 Contra Costa 8 miles NE Danville, S slope of Mt. Diablo. Comment
  UC1120859  Arctostaphylos auriculata R. W. Lundh 1932-8-24 138 Contra Costa 2 mi s Mt. Diablo (Rock City); Mt. Diablo Quadrangle 502 Comment
  UC75346  Arctostaphylos auriculata Alice Eastwood 1903-2-22 3161 Contra Costa Mt. Diablo Comment
Read comments Aug 25 2011
  UC2028019  Arctostaphylos auriculata Barbara Ertter 1997-9-14 15817 Contra Costa Southwest side of Mount Diablo, Wall Point Road on open sandstone ridge northwest of Wall Point. Comment
  CAS-BOT-BC23591  Arctostaphylos crustacea Walter Knight; Irja Knight 1980-3-16 3715 Contra Costa Sobrante Ridge between Heavenly Ridge Lane and Castro Ranch road. Comment
  CHSC20599  Arctostaphylos glandulosa Robert A. Schlising 1962-2-21 2081 Contra Costa Coast Ranges. Berkeley-Oakland Hills of westernmost part of county. Comment
  UC692498  Arctostaphylos glauca Mary L. Bowerman 1931-11-21 1068 Contra Costa near canyon bottom and Bilharan Mount Diablo, Donner Canyon Comment
  RSA0046800  Arctostaphylos glauca Mary L. Bowerman 1933-3-11 1748 Contra Costa Fossil Ridge, outer south face: In gully northwest of South Gate. Comment
  CAS-BOT-BC27256  Arctostaphylos laevigata Alice Eastwood 1922-3-17 11082 Contra Costa Mt. Diablo Comment
  RSA632819  Arctostaphylos laevigata Jon E. Keeley 1996-6-24 27583 Contra Costa Above Rock City, Mt. Diablo. 540 Comment
  CAS-BOT-BC38878  Arctostaphylos manzanita subsp. laevigata Rimo Bacigalupi 1924-2-17 s.n. Contra Costa Lower slopes of Mt. Diablo on old wagon road to summit from Mt. Diablo Country Club (Black Hills) 457 Comment
  CAS-BOT-BC38881  Arctostaphylos manzanita subsp. laevigata J. T. Howell 1926-3-7 1665 Contra Costa Mt. Diablo Comment
  SEINET3411014 Image available Arctostaphylos manzanita subsp. laevigata Lewis S. Rose 1934-2-28 Contra Costa Rocky shrubby hills, South slope Mt. Diablo, 8 miles NE Danville, Contra Costa County, California. 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-BC24398  Arctostaphylos manzanita subsp. manzanita Mary L. Bowerman 1932-1-19 1074 Contra Costa Mount Diablo, Inner Black Hills. Just over ridge. Comment
  UCSB22193  Arctostaphylos obispoensis Jensen, H. 1938-10-27 Contra Costa Head of Sycamore Creek 518 Comment
  CDA29586  Arctostaphylos pallida D. G. Kelch, Suzanne Latham, Matt Beyers 2009-6-3 9 .334 Contra Costa East Bay.; El Sobrante Ridge at end of Silver Belt Dr. on Miocene chert outcrop. Comment
  HSC93963  Arctostaphylos pallida C. Newberry 1994-3-12 7163 Contra Costa Huckleberry Botanic Regional Preserve, Skyline Trail 244 Comment
  UC1120138  Arctostaphylos tomentosa subsp. crustacea C. M. Belshaw 1936-2-16 1585 Contra Costa 2 1/2 mi nw Lafayette; Concord Quadrangle, Lafayette Ridge Comment
  UC1120189  Arctostaphylos tomentosa subsp. crustacea R. W. Lundh 1932-8-27 151 Contra Costa 1 1/2 mi w Cave Point; Mount Diablo Quadrangle 502 Comment
  UC549465  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 628 Contra Costa Moraga Ridge Comment
  UC549467  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-9 636 Contra Costa Moraga Ridge Comment
  UC549476  Arctostaphylos tomentosa subsp. crustacea J. E. Adams 1934-3-19 681 Contra Costa Mount Diablo 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
  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
  UC2032801 Image available Argyranthemum foeniculaceum Doran, Andrew Scott 2012-3-20 671 Contra Costa Brooks island loading dock, North side of island. Comment
  UC6151  Aristolochia californica Harley P. Chandler 1901-3-22 866 Contra Costa Port Costa San Francisco Bay Region, Port Costa Comment
  CAS-BOT-BC400402  Aristolochia californica H. M. Hall 1899-4-23 s.n. Contra Costa Lauterwasser Creek Comment
  HSC3262  Aristolochia californica Greg Bos 1963-3-9 28 Contra Costa Pinole Valley Rd., SE of Pinole 61 Comment
  CAS-BOT-BC17386  Armoracia rusticana Walter Knight; Joanne Dean 1978-8-14 3121 Contra Costa Browns Island. Comment
  SEINET10669563  Arnica cordifolia John G. Lemmon 1872-1 Lemmon s.n. Contra Costa Summit of Mount Diablo. Comment
  JEPS95239  Arnica discoidea Stephen W. Edwards 1991-1 Contra Costa Huckleberry Trail; Huckleberry Botanic Regional Preserves Comment
  UC29618  Arnica discoidea F. P. McLean 1875-3-1 Contra Costa Mt. Diablo Comment
  UC697153  Arnica discoidea Mary L. Bowerman 1933-5-22 2173 Contra Costa Inner Black Hills, (w of 1970, sheltered gully on n faced) Mount Diablo, Black Hills Comment
  CAS-BOT-BC82594  Arnica lanceolata subsp. prima H. M. Hall; H. P. Chandler 1900-7-1 649 Contra Costa South Fork of San Joaquin River Comment
  JEPS36967  Artemisia californica W. L. Jepson 1916-10-22 6852 a Contra Costa Las Trampas Ridge southern Contra Costa County, Las Trampas Ridge Comment
  UC697130  Artemisia californica Mary L. Bowerman 1931-11-21 1069 Contra Costa e flank of Donner Canyon; Mount Diablo Comment
  UCD129214  Artemisia californica Beecher Crampton 1972-11-21 8892 Contra Costa 2 miles east Port Costa. Comment
  UC2028460  Artemisia douglasiana Barbara Ertter 1997-9-7 15794 Contra Costa North side Mount Diablo, Donner Creek crossing at south end of Hetherington Trail Comment
  UC521721  Artemisia douglasiana Joseph Andorfer Ewan 1933-10-15 8033 Contra Costa grassy slope above Indian Ceremonial Spr.; Mt. Diablo Comment
  CAS-BOT-BC90297  Artemisia douglasiana Vincent Jones 1920-8-20 s.n. Contra Costa Vallejo Comment
  UC1543026  Asclepias californica Donald G. Nelson 1937-4-24 520 Contra Costa between Byron and Clayton (on March Creek Road) Comment
  UC691842  Asclepias californica Mary L. Bowerman 1931-5-21 877 Contra Costa Curry Canyon at Cave Point junction Mount Diablo 304 Comment
  UC2045295 Image available Asclepias californica Mary L. Bowerman 1932-9-24 1596 Contra Costa Ridge running west from Twin Peaks Comment
  SEINET10580308  Asclepias californica subsp. greenei Charles F. Baker 1903-4-28 Baker 2871 Contra Costa Marsh Creek, Mt. Diablo Comment
  CHSC75046  Asclepias fascicularis Roger Thom 1987-5-18 10 Contra Costa Calif. State University Hayward's Contra Costa Campus. 3100 Oak Park Blvd. Pleasant Hill. 30 Comment
  CDA34969  Asparagus asparagoides Barbara Ertter 1991-1-21 9715 Contra Costa El Cerrito, in southwest corner of county; northeast corner of Point Isabel Regional Shoreline, along abandoned railroad right-of-way. 0 Comment
  CDA1505  Aster chilensis D. G. Kelch 1998-10-13 s.n. Contra Costa Carquinez Strait; Base of Elkhorn Creek, E of Crockett. Comment
  RSA0028278  Aster exilis Barbara Ertter, CNPS 1990-9-16 9645 Contra Costa Bethel Island NE of Brentwood, E end of Gateway Road at W edge of Franks Tract State Recreation Area. Comment
  CAS-BOT-BC180570  Astragalus asymmetricus C. Hart Merriam 1906-9-13 s.n. Contra Costa Byron Springs Comment
  CAS-BOT-BC180573  Astragalus asymmetricus unspecified s.n. Contra Costa Marsh Creek near Mt. Diablo Comment
  UC659396  Astragalus gambelianus Lincoln Constance, Carl W. Sharsmith with Howard S. Reed 1940-4-27 2572 Contra Costa base of Mount Diablo , Pine Canyon (Pine Canyon) 304 Comment
  CAS-BOT-BC178472  Astragalus gambelianus H. L. Mason 1928-4-26 4380 Contra Costa Berkely - Oakland Hills Comment
  CAS-BOT-BC178477  Astragalus gambelianus Alice Eastwood 1906-5-1 s.n. Contra Costa Berkeley Comment
  SEINET7716442  Astragalus leucophyllus Chesnut, Drew 1889-4-16 Contra Costa Clayton Comment
  CAS-BOT-BC66048  Athyrium filix-femina var. cyclosorum M. Beene 1981-4-11 011 Contra Costa Lafayette Res. eastern side of park ca. 100 m W. from main path Comment
  UC517970  Athysanus pusillus John Thomas Howell 1931-3-10 5754 Contra Costa 7 mi from Clayton (on Livermore Road, e side of Mount Diablo); Mount Diablo Comment
  UC673344  Athysanus pusillus H. L. Mason 1929-3-29 5117 Contra Costa Mount Diablo 1066 Comment
  POM225552  Athysanus pusillus J. T. Howell 1931-3-10 5754 Contra Costa East side of Mt. Diablo 7 miles from Clayton on Livermore road. Comment
  UCD97866  Atriplex Robert E. Preston; Eva Buxton 1994-8-4 676 Contra Costa east end of Briones Valley, west of Marsh Creek Reservoir. 60 Comment
  RSA739722  Atriplex argentea subsp. expansa John Dittes 2006-10-26 1414 Contra Costa San Joaquin Valley (foothills near NW edge) 2 air mile S of Marsh Creek Reservoir Gauging Station, 1.6 air mile SW of intersection of Camino Diablo and Vasco Road, Contra Costa Water District s Los Vaqueros Watershed Mitigation. 67 Comment
  CHSC99191  Atriplex argentea var. mohavensis John Dittes 2006-10-26 1414 Contra Costa San Joaquin Valley (foothills near nw edge); ~ 2.0 air-mile south of Marsh Creek Reservoir Gauging Station, 1.6 air-mile southwest of intersection of Camino Diablo and Vasco Road; Contra Costa Water District's Los Vaqueros Watershed Mitigation Project Area. 67 Comment
  CAS-BOT-BC168539  Atriplex coronata Alice Eastwood 1927-5-19 14441 Contra Costa Byron Springs Comment
  CAS-BOT-BC168541  Atriplex coronata R. E. Frenkel 1964-7-10 648 Contra Costa On Balfour Road, 0.2 miles west of Bixler Road 6 Comment
  JEPS65178  Atriplex fruticulosa L. R. Heckard 1971-4-15 2489 Contra Costa in crack of old road pavement at intersection of Holey Road s Byron; s of Byron Comment
  UC70185  Atriplex joaquinana J. Burtt Davy May 1898 Contra Costa Danville region of Mount Diablo, Danville 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
  UCD97697  Atriplex semibaccata Clyde L. Elmore 1964-10-6 s.n. Contra Costa 1/2 mile south of Orwood Road, in Orwood Resort, 4-5 miles east of Brentwood. Comment
  SEINET1909893  Atriplex triangularis Barbara Ertter, Elizabeth Neese 1988-1 7979 Contra Costa Salicornia marsh W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue Comment
  UC473576  Atriplex triangularis John Thomas Howell 1931-10-31 8163 Contra Costa Bay Point Comment
  CHSC116649  Avena barbata Lowell Ahart; Josephine Guardino 2016-4-19 20786 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along the sides ot 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
  UC691230  Avena barbata Mary L. Bowerman 1933-5-2 1943 Contra Costa below Pioneer Camp; Mount Diablo 762 Comment
  UCD56170  Avena barbata Beecher Crampton 1956-5-14 3404 Contra Costa Southeast of Mt. Diablo. Headwaters of Marsh Creek. 640 Comment
  CAS-BOT-BC146024  Avena barbata John Thomas Howell 1983-5-12 54745 Contra Costa Mount Diablo. Juniper Camp. 914 Comment
  RSA129571  Avena fatua R. W. Lundh 1933-3-25 218 Contra Costa 1 mi. W. & 1/2 N. of Lafayette Acalanes; Concord 213 Comment
  RSA762309  Avena fatua William J. Ferlatte, L. M. Moe 1970-4-27 1225 Contra Costa San Francisco Bay, Red Rock Island. Comment
  UC691223  Avena fatua Mary L. Bowerman 1935-4-19 2853 Contra Costa West road 3.5 mi from entrance; Mount Diablo 381 Comment
  UCD56252  Avena fatua P. Akers 2002-5-11 s.n. Contra Costa Mt. Diablo Summit Trail. At water tank picnic area. 873 Comment
  CAS-BOT-BC145878  Avena fatua Mary L. Bowerman 1933-4-26 1911 Contra Costa Mount Diablo. North Peak ridge east-southeast of the peak. 609 Comment
  CAS-BOT-BC98764  Baccharis douglasii John Thomas Howell 1926-1-17 1627 Contra Costa Between Cashion and las Trampas Ridge Comment
  CAS-BOT-BC98189  Baccharis salicifolia Walter Knight; I. Knight; J. T. Howell; E. McClintock; S. Rae; B. Doyle 1978-9-5 3207 Contra Costa Browns Island Comment
  UC202943  Baccharis salicifolia subsp. salicifolia Chesnut and Drew 1889-4-17 Contra Costa Clayton Comment
  UC30399  Baccharis salicifolia subsp. salicifolia H. N. Bolander 1866-4-1 6162 Contra Costa near Mount Diablo Comment
  JEPS12785  Balsamorhiza deltoidea Rimo Bacigalupi with G. T. Robbins 1955-5-4 4978 Contra Costa along road to Irish Canyon (s of and above Nortonville) 426 Comment
  JEPS32259  Balsamorhiza deltoidea R. F. Hoover 1939-4-13 4015 Contra Costa head of Markley Canyon (w branch) Markley Canyon Comment
  PASA1585  Balsamorhiza deltoidea Annetta Carter 1929-3-31 Contra Costa Hills north of Mt. Diablo, near Clayton Comment
  CAS-BOT-BC16380  Barbarea orthoceras Alice Eastwood 1915-5-30 4495 Contra Costa Mount Diablo. 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
  UC691253  Barbarea orthoceras Mary L. Bowerman 1933-2-4 1688 Contra Costa Flat east of Meridian-North Peak divide. 822 Comment
  CDA21555  Bassia hyssopifolia D. G. Kelch, Michael Park 2008-9-1 8 .293 Contra Costa Carquinez Strait; 200 m W of Pacheco Slough, E of Martinez. Comment
  JEPS100152  Bellardia trixago G. Smick 2003-5-6 GAS 171 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS15610  Bellardia trixago R. Bacigalupi and G. Thomas Robbins 1955-5-4 4973 Contra Costa E edge, field along treat Lane Concord; Clayton Valley 60 Comment
  UCD35137  Bellardia trixago Beecher Crampton 1949-6-5 468 Contra Costa near Muir. Comment
  CAS-BOT-BC75786  Berberis pinnata H. E. McMinn 1923-3-17 897 Contra Costa Sycamore Canyon - 2 miles from Black Hawk Ranch - left canyon. Comment
  UC697191  Berula erecta Mary L. Bowerman 1931-8-29 1031 Contra Costa Mount Diablo, Sheep Camp Spring, by North Road Sheep Camp Spring; Mount Diablo, Sheep Camp Spring Comment
  UC2012948  Beta vulgaris Barbara Ertter 1990-10-24 9685 Contra Costa Martinez Regional Shoreline on Carquinez Strait. Comment
  CAS-BOT-BC102086  Bidens frondosa Walter Knight; Joanne Dean 1978-8-14 3157 Contra Costa Browns Island 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
  CAS-BOT-BC102032  Bidens laevis Walter Knight; Irja Knight; J. T. Howell; E. McClintock; et al. 1978-9-5 3242 Contra Costa Browns Island. Yucca Landing Comment
  NY31015  Blennosperma californicum L. S. Rose 1933-3-10 33008 Contra Costa Marsh Creek Comment
  NY31016  Blennosperma californicum A. M. Carter 1937-3-28 1225 Contra Costa Marsh Creek road, 15 miles east of Concord 152.4 Comment
  SEINET10758592  Blennosperma californicum Lewis S. Rose 1932-3-15 Rose 3279 Contra Costa Byron. Comment
  CAS-BOT-BC100699  Blennosperma nanum var. nanum Brandegee s.n. Contra Costa [Antiock] Antioch Comment
  UC1119039  Blennosperma nanum var. nanum H. S. Yates 1936-4-14 13818 Contra Costa 1/2 mi n of mouth of Perkins Canyon; Mt. Diablo Quadrangle 228 Comment
  SEINET1910262  Blennosperma nanum var. nanum Barbara Ertter 1992-1 10908 Contra Costa Byron Springs Road, 4-5 miles south of Junction with J4, near Armstrong Road Comment
  CAS-BOT-BC127916  Blepharizonia laxa Mrs. Curran s.n. Contra Costa Antioch Comment
  CAS-BOT-BC100334  Blepharizonia plumosa Joanne Dean 1978-9-17 s.n. Contra Costa Byron Comment
  UCD77424  Blepharizonia plumosa Robert E. Preston 2001-10-7 1777 Contra Costa Black Diamond Mines Regional Park, on w side of Stewartsville Trail, 0.75 mi s of Parking lot at Frederickson Lane trailhead. 152 Comment
Read comments Mar 14 2018
  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
  UC10111  Boechera breweri subsp. breweri H. P. Chandler and H. M. Hall 1901-4-5 Contra Costa Mt. Diablo summit Mt. Diablo Comment
  SEINET5340097  Boechera breweri subsp. breweri W. C. Blasdale 1896-2-28 s.n. Contra Costa Mt. Diablo Comment
  UC2029190  Bolboschoenus maritimus Barbara Ertter with Brad Olson et al. 2000-6-2 17307 Contra Costa Brushy Peal Regional Preserve NE of Livermore Comment
Read comments Sep 1 2021
  CAS-BOT-BC31332  Bolboschoenus maritimus Walter Knight; Harry Reeves 1979-8-25 3408 Contra Costa Man made marsh below dam near golf course. Contra Loma Regional Park near Antioch. 22 Comment
  HSC7467  Bolboschoenus robustus Leo Koch 1940-6-5 1004 Contra Costa Near highway, 2 mi. S of San Rafael ferry dock Comment
  UCD161761  Bolboschoenus robustus James A. Neilson Jr.; Samuel A. Bamberg 1972-10-22 3502 Contra Costa Walnut Creek drainage. (Exact location unknown. Coordinates and elevation estimated by label maker based on collection data from same date.) 1 Comment
  CDA42003  Boschniakia strobilacea B. Hosman 1974-6-2 s.n. Contra Costa in the native area 0 Comment
  UC692361  Bowlesia incana Mary L. Bowerman 1935-6-1 3098 Contra Costa Mount Diablo, Pine-Mitchell Divide Mount Diablo; , Pine-Mitchell Divide 975 Comment
  UC2062627  Bowlesia incana Barbara Ertter 2003-3-28 18118 Contra Costa Round Valley Regional Preserve, ca 1 mile west of trailhead. Comment
  UC34624  Brickellia californica V. King Chesnut 1887-9-11 Contra Costa Mt. Diablo Comment
  UC1795697  Briza maxima Barbara Ertter, Chris Thayer 1995-4-25 13999 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd at northeast FK of Sycamore Creek. 396 Comment
  UC2028494  Briza maxima Barbara Ertter 1998-5-3 16071 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, between Wall Point and Secret Trail junction Comment
  UCD32377  Briza minor Beecher Crampton 1950-4-20 518 Contra Costa Contra Costa County, 1 mile north of Richmond, along Santa Fe Railroad. 15 Comment
  UCD164897  Brodiaea elegans subsp. elegans Henry House 1995-5-20 1995- 15 Contra Costa about 1 km west of Walnut Blvd., ca. 0.5 km south of Marsh Creek Rd. 60 Comment
  UCD37380  Bromus Beecher Crampton 1960-3-29 5481 Contra Costa Contra Costa County, city of El Cerrito, corner of Carlson and Lassen Boulevards. Comment
  CDA23631  Bromus carinatus D. G. Kelch, D. A. Weinstein 2008-4-25 8 .089 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
  UCD57881  Bromus carinatus Beecher Crampton 1956-5-14 3393 Contra Costa Just east of old Nortonville. 7 miles southwest of Antioch. Comment
  UC692337  Bromus carinatus var. carinatus Mary L. Bowerman 1935-5-22 3038 Contra Costa w of Twin Peaks (Mount Diablo, Eagle Point Ridge); Mount Diablo, Eagle Point Ridge 304 Comment
  UC697121  Bromus carinatus var. carinatus Mary L. Bowerman 1933-5-19 2145 Contra Costa Mount Diablo, Sulphur Spring Canyon Sulphur Spring Canyon; Mount Diablo, Sulphur Spring Canyon Comment
  CHSC21623  Bromus catharticus Willis Ball 1975-3-25 503 Contra Costa Contra Loma Regional Park. In area #1. Under olive trees in picnic area ca. 50 yds w of main parking lot ca. 50 yds s of the lake. 36 Comment
  CHSC21647  Bromus diandrus Willis Ball 1975-3-2 477 Contra Costa Contra Loma Regional Park. In area #4. On e side of lake ca. 175 yds s of dam. 30 Comment
  UC50599  Bromus diandrus Jos. Burtt Davy 1897-4-17 Contra Costa Point Isabel Comment
  UC606748  Bromus diandrus Edward Lee 1936-4-19 1976 Contra Costa San Francisco, Red Rock Red Rock; San Francisco, Red Rock Comment
  UC691216  Bromus diandrus Mary L. Bowerman 1932-4-27 1372 Contra Costa w of Riggs Canyon (Mount Diablo, Oyster Ridge); Mount Diablo, Oyster Ridge 289 Comment
  UC692288  Bromus diandrus Mary L. Bowerman 1935-5-1 2935 Contra Costa 2 mi from Entrance (Mount Diablo, West Road = North Road); Mount Diablo, West Road 182 Comment
  CAS-BOT-BC156065  Bromus diandrus Mary L. Bowerman 1935-5-1 2935 Contra Costa Mount Diablo. North Road 2 miles from entracne. 182 Comment
  CAS-BOT-BC156068  Bromus diandrus Mary L. Bowerman 1935-5-25 3068 Contra Costa South of the summit and east of the haripin turn on the highway. 1066 Comment
  UC60202  Bromus hordeaceus J. B. Davy 1898-1 Contra Costa Mount Diablo Region, Danville Danville; Mount Diablo Region, Danville Comment
  UC60206  Bromus hordeaceus Jos. Burtt Davy 1899-4-19 7866 Contra Costa Las Trampas Creek Comment
  UC697135  Bromus hordeaceus Mary L. Bowerman 1931-5-13 839 a Contra Costa Mount Diablo, Pine Canyon, 1 mi above spring Pine Canyon; Mount Diablo, Pine Canyon Comment
  UCD58674  Bromus hordeaceus L. S. Smith 1914-5-9 UCX 283 Contra Costa Mt. Diablo. West slope. Comment
  UCD58767  Bromus hordeaceus L. S. Smith 1914-5-9 s.n. Contra Costa Mt. Diablo. West slope. Comment
  UC691209  Bromus madritensis subsp. madritensis Mary L. Bowerman 1935-5-16 2986 Contra Costa Mount Diablo, Russelman Park Russelman Park; Mount Diablo, Russelman Park 381 Comment
  UC692335  Bromus madritensis subsp. madritensis Mary L. Bowerman 1935-4-19 2863 Contra Costa near Turtle Rock (Mount Diablo); Mount Diablo 457 Comment
  CDA23570  Bromus rubens D. G. Kelch, D. A. Weinstein 2008-4-25 8 .088 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
  POM300682  Bromus rubens Mary L. Bowerman 1932-4-27 1385 Contra Costa Oyster Ridge, south face, canyon west of Riggs Canyon; Chaparral-patch in Fork of canyon 335 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
  POM257267  Calamagrostis rubescens Virginia Long 1933-6-14 222 a Contra Costa Mt. Diablo. Inner Black Hills. Comment
  SEINET3924764  Calamagrostis rubescens Virginia E. Long 1933-6-14 222 a Contra Costa Mt. Diablo, Inner Black Hills.; 0 565 Comment
  CAS-BOT-BC438372  Calandrinia ciliata Mary L. Bowerman 1939-5-2 3741 Contra Costa Mount Diablo. By road to Barbecue Terrace (off South Road) 563 Comment
  CDA932  Calandrinia ciliata D. G. Kelch 2005-2-13 05 .007-B Contra Costa Carquinez Strait; Upper Canada de Cierbo. Comment
  JEPS112038  Calandrinia ciliata D. G. Kelch 2004-3-5 04 .5 Contra Costa Martinez - Rankin Open Space Rankin Park, Martinez 56 Comment
  JEPS68965  Calandrinia ciliata Edward Lee 1935-3-10 1298 Contra Costa Nortonville; (s watershed of Kirker Creek) Comment
  UCR12027  Calandrinia ciliata Coleta A. Lawler 1964-5-8 56 Contra Costa San Francisco Bay Region, Hampton Road, 3 .7 mi south of junction with Alhambra Valley Road; c. 10 miles northwest of Lafayette 46 Comment
  UC1050752  Calceolaria integrifolia N. Floy Bracelin 1942-6-28 2166 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS108321  Calendula arvensis David Gowen 2005-2-23 167 Contra Costa Mt. Diablo State Park. Grassy slope just above Pioneer Horse Camp. Comment
  CAS-BOT-BC167286  California macrophylla Brandegee s.n. Contra Costa Antioch Comment
  UC1795791  Callitriche heterophylla var. bolanderi Barbara Ertter, Mary Bowerman et al. 1995-5-7 14034 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
  JEPS22442  Callitriche marginata Frank Shultz 1958-3-15 Contra Costa 3 miles south of Byron. 15 Comment
  UC2027722  Callitriche marginata Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15512 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC1134541  Calochortus argillosus C. M. Belshaw 1936-5-13 2019 A Contra Costa 0.5 mi e Round Valley; Mt. Diablo Quad. 228 Comment
  RSA0026152  Calochortus argillosus Barbara Ertter, Dan Norris 1998-6-18 16209 Contra Costa South Gate Road on south flank of Mount Diablo, ca. 1 mile in from park boundary. 305 Comment
  JEPS112497  Calochortus luteus D. G. Kelch 2004-5-7 04 .180 Contra Costa Ca ada del Cierbo 40 Comment
  JEPS112509  Calochortus luteus A. G. Murdock 2003-6-2 77 Contra Costa Crockett - 5th St. Prairie 85 Comment
  CAS-BOT-BC132496  Calochortus pulchellus Alice Eastwood 1914-5-30 4442 Contra Costa Mt. Diablo Comment
  HSC93902  Calochortus pulchellus C. Newberry 1994-4-30 7250 Contra Costa Mt. Diablo State Park, trail from Mitchell Canyon Parking to Donner Creek 900 Comment
  JEPS61708  Calochortus pulchellus W. L. Jepson 1923-6-10 10001 Contra Costa Upper Marsh Creek Mt. Diablo Comment
  RSA29584  Calochortus pulchellus Joseph A. Ewan 1934-4-8 8774 Contra Costa Mt. Diablo: South Fork Marsh Creek. Comment
  SBBG52901  Calochortus pulchellus J. D. Hobson 1962-3-9 36 Contra Costa Mt Diablo Comment
  SBBG57749  Calochortus pulchellus M. N. Ackley -Apr-1930 641 Contra Costa Mt Diablo Comment
  UC1134509  Calochortus pulchellus C. M. Belshaw 1936-5-12 2104 Contra Costa 1 mi s Tassajero Rd. summit; Mt. Diablo 304 Comment
Read comments Dec 29 2006
  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-BC132505  Calochortus pulchellus Paul F. Covel 1936-5-17 123 Contra Costa Mt. Diablo, (North Pk trail) Comment
  CAS-BOT-BC483487  Calochortus splendens Mary L. Bowerman 1931-5-23 898 Contra Costa Oyster Pont Ridge Comment
  RSA68634  Calochortus umbellatus Frank W. Peirson 1926-4-11 6639 Contra Costa Along summit of hills back of Albany Comment
  UC691991  Calochortus umbellatus Mary L. Bowerman 1933-5-22 2170 Contra Costa e of Knobcone Point (on n-face); Mount Diablo, Inner Black Hills Comment
  JEPS122392  Calochortus venustus Nisrine Machaka-Houri with Gracie Benson-Martin 2014-5-17 NG 12 Contra Costa Golden Lily Trail, Mitchell Canyon, Mt. Diablo State Park. Comment
  CAS-BOT-BC494049  Calochortus venustus T. S. Brandegee 1889-4-21 s.n. Contra Costa San Pablo Comment
  UC2027939  Calochortus venustus Barbara Ertter with Tony Morosco and other CNPS members 2001-5-6 17623 Contra Costa Northwest flank of Mount Diablo, Globe Lily Trail paralleling Mitchell Canyon Road. Comment
  POM301048  Calycadenia truncata subsp. truncata Mary L. Bowerman 1931-9-12 1040 Contra Costa Mitchell Canyon 838 Comment
  CAS-BOT-BC275351  Calycadenia truncata var. truncata Mary L. Bowerman 1936-9-1 3536 Contra Costa Mount Diablo. Between North Peak and the mouth of Perkins Canyon 487 Comment
  CAS-BOT-BC224748  Calystegia malacophylla subsp. pedicellata Mary L. Bowerman 1935-6-8 3126 Contra Costa Mount Diablo. Summit 1170 Comment
  UC635024  Calystegia purpurata A. E. Borell 1928-4-13 128 Contra Costa Point Richmond Comment
  UC691902  Calystegia purpurata Mary L. Bowerman 1932-9-24 1588 Contra Costa ridge running w from Twin Peaks (Mount Diablo); , ridge running w from Twin Peaks 335 Comment
  CAS-BOT-BC215917  Calystegia purpurata subsp. purpurata Alice Eastwood 1915-5-30 4437 Contra Costa Mt. Diablo Comment
  CDA39897  Calystegia purpurata subsp. purpurata A. G. Murdock 2003-6-2 79 Contra Costa Carquinez Strait Region; Franklin Canyon - McHarry Ranch Rd. Comment
  UC1818948  Calystegia purpurata subsp. purpurata Barbara Ertter, volunteers 1996-5-11 14643 Contra Costa North Gate Road at northwest base of Mount Diablo, just barely inside state park boundary; along Little Pine Creek. 176 Comment
  UCD150753  Calystegia sepium James A. Neilson Jr. 1972-11-2 3612 Contra Costa 2 miles NW of Concord, at intersection of Hwy 4 and Walnut Creek. 7 Comment
  UC23168  Calystegia sepium subsp. binghamiae Jos. Burtt Davy 1900-6-7 6664 Contra Costa near Martinez; near Martinez Comment
  CAS-BOT-BC199277  Calystegia sepium subsp. limnophila Malcom A. Nobs; S. Galen Smith 1949-7-8 941 Contra Costa Otto's Black Bass Resort, 4 miles north of Kingston Comment
  CAS-BOT-BC209525  Calystegia sepium subsp. limnophila Ira L. Wiggins 1954-9-5 13123 Contra Costa Levee along Bethel Island Comment
  CAS-BOT-BC224745  Calystegia sepium subsp. limnophila R. K. Brummitt; B. Ertter 1998-5-6 19792 Contra Costa Antioch. Sea level Comment
  CDA39895  Calystegia sepium subsp. limnophila T. C. Fuller 1964-11-6 12807 Contra Costa Northeast side of Bethel Island. 0 Comment
  UC2029024  Calystegia subacaulis Barbara Ertter 1999-7-17 16760 Contra Costa El Cerrito, west side of Arlington Ave. in small triangle of land between Moeser Ln. and Terrace Dr., among mowed Avena. Comment
  UC1794986  Calystegia subacaulis subsp. subacaulis R. K. Brummitt and B. Ertter 1998-5-6 19788 Contra Costa Mt. Diablo, NE side, Donner Track 400 Comment
  UC691849  Calystegia subacaulis subsp. subacaulis Mary L. Bowerman 1931-4-11 709 Contra Costa toward mouth Pine Canyon (Mount Diablo); , Pine Canyon toward mouth Comment
  POM31985  Camissonia contorta C. F. Baker 1903-4-25 2824 Contra Costa Antioch. 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
  UC1784899  Camissoniopsis hirtella Barbara Ertter with Thomas J. Delendick 1996-5-2 14609 Contra Costa Mount Diablo, lower summit parking lot 1127 Comment
  CAS-BOT-BC266439  Campanula exigua Mary L. Bowerman 1930-6-14 330 Contra Costa Mount Diablo. Summit, on N slope Comment
  UC691518  Campanula exigua Mary L. Bowerman 1935-5-25 3078 Contra Costa rock slide in rock gorge; Mount Diablo, Rhine Canyon 914 Comment
  SEINET10461960  Campanula exigua Rattan 1886-6-14 RATTAN s.n. Contra Costa Summit of Mount Diablo Comment
  UC1055904  Campanula garganica N. Floy Bracelin 1941-6-1 1347 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CAS-BOT-BC37395  Cardamine californica Robert Francis Hoover 1938-2-21 2754 Contra Costa Point Richmond. Comment
  UC517996  Cardamine californica John Thomas Howell 1931-3-10 5757 Contra Costa on Livermore Road 7 mi from Clayton (e side Mt. Diablo); e side Mt. Diablo Comment
  UC2028278  Cardamine californica Barbara Ertter 1999-3-21 16490 Contra Costa NW corner of Miller Knox Regional Shoreline, Potrero Hills SW of Richmond; abandoned trail on north side of crest. Comment
  CAS-BOT-BC37863  Cardamine oligosperma Mary L. Bowerman 1932-3-6 1100 Contra Costa Mount Diablo. Sycamore Canyon, east fork. Near trail. Comment
  UCR17092  Cardamine oligosperma James K. Ryan 1969-3-31 46 Contra Costa Mt. Diablo State Park, Horseshoe Picnic Area, very close to area entrance 610 Comment
  POM300574  Cardamine oligosperma Mary L. Bowerman 1932-3-6 1100 Contra Costa Sycamore Canyon, east fork: Near trail. Comment
  UC2028048  Cardamine oligosperma Barbara Ertter 1998-2-15 15914 Contra Costa Shell Ridge Open Space on northwest base of Mount Diablo, outcrops on north side of Joaquin Ridge south of Indian Creek, +/- wooded. Comment
  CDA19196  Cardaria draba R. Fonseca 2001-5-16 PDR P 088201 Contra Costa Suisun Bay Region; Franklin Canyon Rd., Martinez. 115 Comment
  CDA3651  Cardaria draba D. G. Kelch, A. G. Murdock 2005-3-25 5 .092 Contra Costa Carquinez Strait Region; Fernandez Ranch. West of Christie Road, south of I-4 (behind golf course) and north of Pinole Peak. Comment
  POM351433  Carduus pycnocephalus B. C. Templeton 1962-6-10 s.n. Contra Costa Mt Diablo. Comment
  CAS-BOT-BC281736  Carduus pycnocephalus Paul F. Covel 1938-6-26 s.n. Contra Costa Las Trampas Canyon, behind St. Mary's Comment
  SEINET4023248 Image available Carduus pycnocephalus B. C. Templeton 1962-1 sn Contra Costa Mount Diablo. Comment
  JEPS99960  Carduus pycnocephalus subsp. pycnocephalus G. Smick 2003-4-10 GAS 137 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1555379  Carduus pycnocephalus subsp. pycnocephalus Jerry Powell 1988-5-18 1536 Contra Costa Pt. Molate, w Richmond Richmond, Pt. Molate Comment
  UC691373  Carduus tenuiflorus Mary L. Bowerman 1934-6-9 2547 Contra Costa bend by sign reading 4.4 mi to summit Diablo Trail sign (South Road); Mount Diablo 304 Comment
  CAS-BOT-BC281803  Carduus tenuiflorus David Keck 1941-6-5 5312 Contra Costa Berkeley Hills, Fish Creek Rd, 0.25 mile W of E portal of Broadway Tunnel 335 Comment
  UCD129927  Carduus tenuiflorus Collector Unknown Date Unknown 64 Contra Costa about 6 miles east of Pinole on Franklin Canyon Road. 152 Comment
  CAS-BOT-BC19205  Carex barbarae Walter Knight 1967-7-9 s.n. Contra Costa Tilden Park. Botanic Garden. Comment
  JEPS124459  Carex barbarae Daniel Slakey with CNPS Volunteers 2015-6-29 135 Contra Costa Mt. Diablo State Park. Slope above Emmons Canyon, along access trail from Macedo Ranch Staging Area. Comment
  UC70611  Carex densa Jos. Burtt Davy 1899-4-19 7843 Contra Costa Glorietta; Inner Coast Range Mountains Comment
  CAS-BOT-BC34930  Carex densa Mary L. Bowerman 1934-4-21 2531 Contra Costa Mount Diablo. Canyon Nook at junction of North and South Roads. Comment
  UC691963  Carex densa Mary L. Bowerman 1938-5-28 3646 Contra Costa South Road, by spring, paralleling streamlet Mount Diablo 640 Comment
  UC2028235  Carex globosa Barbara Ertter, Tony Morosco 1998-9-18 16439 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  CDA32037  Carex gracilior D. G. Kelch 2006-3-18 6 .104 Contra Costa 2 km N-NW of Orinda Village. NW of corner of San Pablo Dam Rd & Bear Valley Rd. 0 Comment
  UC2028412  Carex multicostata Barbara Ertter with Alan Whittemore, Joanne Kerbavaz, et al. 2001-5-22 17648 Contra Costa South side Mount Diablo, flat at confluence of West (Madrone) and East forks of Sycamore Creek Comment
  UC691961  Carex pellita Mary L. Bowerman 1935-5-16 3000 Contra Costa Russelman Park Road at Gregory Ranch junction; Mount Diablo 289 Comment
  JEPS25158  Carex praegracilis G. Thomas Robbins with John Weiler 1959-5-23 4029 Contra Costa at the nw edge of Brooks Island San Francisco Bay, Richmond, Brooks Island Comment
  SEINET3451402  Carex praegracilis Dean G. Kelch, Andrew G. Murdock 2005-3-24 DGK 5 .064 Contra Costa Corquinez Strait Region, Corquinez Strait Region, Southern Point Pinole 3 Comment
  CAS-BOT-BC118346  Carex praegracilis G. Thomas Robbins; John Weiler 1959-5-23 4029 Contra Costa NW edge of Brooks Island, San Francisco Bay, Richmond. Comment
  POM300642  Carex serratodens Mary L. Bowerman 1938-5-28 3640 Contra Costa Patens Spring (North Road). Mount Diablo. 549 Comment
  UC8054  Carex subbracteata Brewer 1862-4-30 1012 Contra Costa Walnut Creek Comment
  CHSC107307  Carex tumulicola D. G. Kelch 2006-5-5 06 .131 Contra Costa East Bay: Wildcat Canyon Regional Park. Near Wildcat Canyon Road terminus. In grassland near seep area. 122 Comment
  JEPS111891  Carex tumulicola D. G. Kelch 2004-5-5 04 .202 Contra Costa Chevy's Hill. West of I-80 between Richmond Parkway and Hilltop exit 57 Comment
  CDA37471  Carthamus lanatus Vince Guise 2012-6-12 PDR# 1649643 Contra Costa Concord; Highway 4 at Interstate 680 interchange. 0 Comment
  UC1050822  Castilleja affinis N. Floy Bracelin 1941-6-1 1350 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1039781  Castilleja affinis subsp. affinis H. L. Mason 1928-4-29 4438 Contra Costa Mount Diablo Comment
  UC525863  Castilleja affinis subsp. affinis Robert W. Gardner 1934-3-30 57 Contra Costa 3 mi s Mt. Diablo Comment
  JEPS9949  Castilleja attenuata W. L. Jepson 1923-4-22 9873 Contra Costa Mt. Diablo Comment
  UC27147  Castilleja attenuata H. M. Hall 1901-4-5 Contra Costa Mt. Diablo; San Francisco Bay Region 640 Comment
  UC691580  Castilleja attenuata Mary L. Bowerman 1932-4-9 1333 Contra Costa from near Rock City ridge to Wall Point; Mount Diablo Comment
  HSC20894  Castilleja densiflora Greg Bos 1963-4-28 95 Contra Costa Pinole hills overlooking San Pablo Bay 46 Comment
  CDA41329  Castilleja densiflora subsp. densiflora D. G. Kelch 2003-4-3 3 .372 Contra Costa Carquinez Strait Region; Cummings Skyway. Comment
  CDA15239  Castilleja exserta G. F. Hrusa, D. Crowe 1998-5-8 14370 Contra Costa Sacramento Delta; Dow Chemical property at Pittsburg near shore of San Joaquin River. Comment
  CHSC22515  Castilleja exserta Robert A. Schlising 1962-3-24 2106 Contra Costa Coast Ranges. Along Marsh Creek Road, about 4 mi w of Byron. Comment
  JEPS15210  Castilleja exserta subsp. exserta C. M. Belshaw 1936-5-9 2082 Contra Costa 0.5 mi n Nortinville; Mt. Diablo Quad. 274 Comment
  JEPS65199  Castilleja exserta subsp. exserta L. R. Heckard 1971-4-15 2468 Contra Costa n of Mitchell Creek Park (n base of Mt. Diablo); Mt. Diablo 152 Comment
  CAS-BOT-BC241277  Castilleja latifolia Alice Eastwood 1915-6-21 4740 Contra Costa San Leandro Comment
  UC2045291 Image available Castilleja parviflora var. douglasii Mary L. Bowerman 1930-6-5 243 Contra Costa West road, 5.8 miles from entrance Comment
  SEINET3839756  Castilleja rubicundula subsp. lithospermoides Unknown 1996-4-26 Contra Costa Franklin Canyon Road near the junction with McEwan Road in grassland Comment
  CHSC24923  Castilleja subinclusa subsp. franciscana M. A> Callahan 1976-4-11 6 Contra Costa 120 m ne of house at 1976 Mohawk Dr. Pleasant Hill on w slope. 132 Comment
  JEPS57132  Castilleja subinclusa subsp. franciscana L. R. Heckard 1967-5-7 1596 Contra Costa w (above) Wildcat Canyon (along Ridgeway Lane, just off Terrace Drive, El Cerrito); El Cerrito 259 Comment
  CDA1111  Castilleja wightii A. G. Murdock, D. Kelch 2003-6-24 116 Contra Costa Carquinez Strait; Vaca Canyon; Alhambra Valley Rd. Comment
  RSA517383  Castilleja wightii L. R. Heckard 1973-6-6 3421 Contra Costa North-facing slope. Ravine behind La Moine Park (Richmond). 122 Comment
  CHSC67903  Caulanthus flavescens James D. Jokerst 1989-3-31 3078 Contra Costa Hillside E of creek in Brushy Creek Canyon. Comment
  CAS-BOT-BC40511  Caulanthus lasiophyllus Mary L. Bowerman 1932-3-23 1131 Contra Costa Mount Diablo. Ridge east of Donner Canyon. On crest. 274 Comment
  UC2070556  Caulanthus lasiophyllus Barbara Ertter with David Gowen and Mike Park and Victoria Seidman 2004-4-20 18360 Contra Costa Eagle Peak Trail on east side of Twin Peaks, north side of Mount Diablo. Comment
  SEINET3292741 Image available Ceanothus Craig Davis 1970-7-8 D- 168 Contra Costa Growing along roadcut in open areas under power lines on Manzanita Drive in Oakland Hills, in shallow sandy soil. 427 Comment
  CAS-BOT-BC48841  Ceanothus cuneatus Alice Eastwood 1922-3-17 11080 Contra Costa Mt. Diablo Comment
  POM300720  Ceanothus cuneatus Mary L. Bowerman 1932-9-3 1531 Contra Costa Muir Area, burn (1931) Mt. Diablo Comment
  UCD111751  Ceanothus cuneatus P. B. Kennedy 1916-5-31 s.n. Contra Costa between Diablo and summit. Comment
  JEPS48720  Ceanothus cuneatus var. cuneatus W. L. Jepson 1945-3-11 27553 Contra Costa Moraga Ridge Comment
  JEPS48863  Ceanothus cuneatus var. cuneatus Elsa Kraeger 1926-3-7 Contra Costa e side Mt. Diablo Comment
  UC692592  Ceanothus cuneatus var. cuneatus Mary L. Bowerman 1932-9-3 1531 Contra Costa Muir Area, Mount Diablo Comment
  UC692586  Ceanothus oliganthus var. sorediatus Mary L. Bowerman 1932-9-17 1580 Contra Costa West branch of Donner Canyon Mount Diablo Comment
  CAS-BOT-BC63453  Ceanothus palmeri Mark Boone 1981-2-22 002 Contra Costa Mt. Diablo State Park 10.8 mi. from N. Park Gate. Comment
  JEPS111720  Centaurea calcitrapa D. G. Kelch 2004-6-19 04 .281 Contra Costa Selby Along railroad tracks west of Carquinez Bridge Crockett (Valona) 20 Comment
  CDA7090  Centaurea calcitrapa T. C. Fuller 1961-9-13 7000 Contra Costa Highway J4, ca. 4 miles southeast of Byron. 0 Comment
  UC2013017  Centaurea calcitrapa Barbara Ertter with Laura Fujii 1990-7-21 9400 Contra Costa Briones Regional Park, Briones Hills W of Pleasant Hill, weedy field along Homestead Valley trail. Comment
  JEPS111518  Centaurea melitensis D. G. Kelch 2005-5-13 05 .281 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 66 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
  RSA721533  Centaurea melitensis Mary L. Bowerman 1994-6-19 s.n. Contra Costa Mount Diablo, Muir Area. adjacent to road Comment
  UC691371  Centaurea solstitialis Mary L. Bowerman 1938-10-10 3725 Contra Costa 3 mi below junction South Road; Mount Diablo 624 Comment
  CAS-BOT-BC284464  Centaurea solstitialis Walter Knight; Wayne Roderick; Steve Edwards; Bob Doyle 1978-9-19 3249 Contra Costa Browns Island, Alder Point Comment
  UC1555364  Centaurium davyi Jerry Powell 1988-6-28 1541 Contra Costa Point Molate, in w Richmond Richmond, Point Molate Comment
  UC1178020  Centaurium muehlenbergii Herbert L. Mason 1955-7-14 14637 Contra Costa 0.5 mi e Antioch Bridge Comment
  CDA42426  Centranthus ruber D. G. Kelch, Vince Guise 2012-7-26 12 .233 Contra Costa El Sobrante; Circle Dr. Comment
  UC523542  Centromadia fitchii David D. Keck 1933-11-2 2616 Contra Costa 1 mi e Nicholas (n Contra Costa County) Comment
  CAS-BOT-BC288539  Centromadia fitchii John Thomas Howell 1929-9-21 4388 Contra Costa 1 mile SE of Clayton Comment
  CAS-BOT-BC288541  Centromadia fitchii John Thomas Howell 1955-8-24 30904 Contra Costa Mt Diablo near Turtle Rock 259 Comment
  UCD36033  Centromadia fitchii Beecher Crampton 1949-7-15 485 Contra Costa below original site of Judsonville, Lee Higgins Empire Ranch, head of Lone Tree Valley. 114 Comment
  CAS-BOT-BC288880  Centromadia parryi subsp. congdonii David D. Keck 1933-11-2 2611 Contra Costa 2.7 miles N of Walnut Creek Comment
  CAS-BOT-BC288883  Centromadia parryi subsp. congdonii John Thomas Howell 1932-10-16 10820 Contra Costa Near San Ramon Comment
  CDA9504  Centromadia pungens D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .231 Contra Costa Byron Airport. Comment
  UC1563855  Centromadia pungens subsp. pungens Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8138 Contra Costa alkali sink w and adjacen to Clifton Court Forebay (ca 15 air mi sw of Stockton) 0 Comment
  UC306676  Centromadia pungens subsp. pungens A. D. E. Elmer 1903-5-1 4392 Contra Costa Walnut Creek Comment
  CAS-BOT-BC279184  Centromadia pungens subsp. pungens H. M. Hall 1930-8-7 12847 Contra Costa Byron Hot Springs Comment
  CAS-BOT-BC279192  Centromadia pungens subsp. pungens Niall McCarten; V. I. Dains 1986-1-1 03251142 Contra Costa Wl of Camino Diablo & Kellogg Creek Comment
  CAS-BOT-BC279197  Centromadia pungens subsp. pungens Alice Eastwood 1923-4-28 11666 Contra Costa Byron Springs Comment
  UC1606353  Cephalanthus occidentalis var. californicus Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10692 Contra Costa n of Pittsburg (Browns Island, near confluence of Sacramento River and San Joaquin River, opposite Pittsburg Marina); Browns Island Comment
  CHSC116614  Cerastium glomeratum Lowell Ahart; Josephine Guardino 2016-4-19 20773 Contra Costa Undesignted section of Canada de Los Vaqueros Land Grant. 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  UC1948960  Cerastium glomeratum William J. Ferlatte, L. Maynard Moe 1970-4-27 1233 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC2028161  Cerastium glomeratum Barbara Ertter 1998-4-4 15947 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, SE of Indian Valley School. Comment
  CAS-BOT-BC137009  Cercocarpus betuloides var. betuloides Mary L. Bowerman 1932-9-3 1538 Contra Costa Mount Diablo. Summit Comment
  CAS-BOT-BC284219  Chaenactis glabriuscula var. megacephala Brandegee No date on the label. s.n. Contra Costa Antioch Comment
  UC2062626  Chamaesyce maculata Barbara Ertter with John Ginochio 2002-6-1 17945 Contra Costa Ginochio house on south side of North Gate Road on NW base of Mount Diablo, lower Arroyo del Cerro. Comment
  JEPS9018  Chamaesyce ocellata subsp. ocellata W. L. Jepson 1901-10-11 13926 Contra Costa Mount Diablo Comment
  JEPS99568  Chamaesyce serpillifolia subsp. serpillifolia Mary Bowerman 1975-9-14 Contra Costa Mount Diablo, Chase Pond. Comment
  RSA685735  Cheilanthes covillei Mark Morris 1929-03 14910 Contra Costa Mt. Diablo. Comment
  UC42444  Cheilanthes covillei Wm. H. Brewer 1862-5-14 1085 Contra Costa summit of Mt Diablo Comment
  UC42451  Cheilanthes intertexta F. T. Bioletti May 1894 Contra Costa Mt Diablo Comment
  POM300604  Chenopodium berlandieri var. sinuatum Mary L. Bowerman 1932-8-27 1525 Contra Costa South Road below Rock City. Comment
  UC1199816  Chenopodium californicum Herbert L. Mason 1929-3-31 5158 Contra Costa Antioch Sacramento River Comment
  UC691935  Chenopodium californicum Mary L. Bowerman 1931-3-7 546 Contra Costa Sheep Corral Spring Mount Diablo Comment
  JEPS99594  Chenopodium murale Mary Bowerman 1993-10-22 Contra Costa Mount Diablo, Pine Pond. Comment
  UCR13095  Chlorogalum pomeridianum Robin Maetche, Geoffrey Matthews 1971-7-4 s.n. Contra Costa 1 mi below North [Gate Road] entrance to Mt. Diablo State Park, Concord 427 Comment
  UC1135219  Chrysolepis chrysophylla var. minor R. W. Lundh 1933-3-2 208 Contra Costa 0.5 mi n Pinehurst; Concord Quad. 304 Comment
  OBI3376  Chrysolepis chrysophylla var. minor Neil Havlik 1969-7-18 501 Contra Costa Moraga Ridge, east of Oakland 335 Comment
  JEPS89253  Cicendia quadrangularis J. B. Davy 1900-3-24 6516 Contra Costa Pt. Richmond Comment
  UC2070471  Cicendia quadrangularis Barbara Ertter with Kevin Hintsa et al. 2003-4-20 18149 Contra Costa Diablo Foothills Regional Park on west base of Mount Diablo, south end of trail along west edge of Castle Rock Recreation Area Comment
  CHSC75054  Cichorium intybus Roger Thom 1987-5-26 16 Contra Costa 1900 block of Geary Rd. Walnut Creek 30 Comment
  CAS-BOT-BC277974  Cirsium cymosum John Thomas Howell 1942-7-19 17039 Contra Costa Near Rock City, Mt. Diablo Comment
  JEPS59324  Cirsium occidentale var. californicum W. L. Jepson 20843 Contra Costa Mt. Diablo Contra Costa Comment
  CAS-BOT-BC288045  Cirsium occidentale var. venustum L. R. Abrams 1916-6-30 5709 Contra Costa Mt. Diablo near lake Comment
  JEPS75543  Cirsium vulgare P. F. Yorks 1974-8-10 363 Contra Costa ca. 1.8 km. s Bear Creek Road (on Hampton Road in Hampton Road Natural Natural Reserve, n of Briones Reservoir); Hampton Road Natural Reserve 180 Comment
  UC1782176  Citrullus colocynthis var. lanatus Rudolf Schmid 2003-9-13 2003 -15 Contra Costa vacant lot, 24 Edwin Dr., Kensington 169 Comment
  JEPS78818  Clarkia affinis Edward Lee 1936-5-24 2158 Contra Costa about 2 mi se Curry Canyon; Morgan Territory, Marsh Creek Comment
  UC1122357  Clarkia affinis C. M. Belshaw 1936-5-13 2113 Contra Costa 3.7 mi ene Tassajero (plot 31); Mt. Diablo Quadrangle Comment
  UC692501  Clarkia affinis Mary L. Bowerman 1933-5-18 2123 Contra Costa Blackberry Spring Mount Diablo Comment
  UC2028318  Clarkia affinis Barbara Ertter, Susan D'Alcamo 1998-6-12 16159 Contra Costa North Gate Road on west flank of Mount Diablo, ca 1/2 mile below upper Turtle Rock Ranch buildings. Comment
  UC2070449  Clarkia affinis Barbara Ertter with Steve Matson 2003-5-31 18179 Contra Costa Black Diamond Mines Regional Preserve south of Pittsburg, Coal Canyon. Comment
  JEPS43657  Clarkia biloba Ivar Tidestrom June, 1895 Contra Costa Crockett Comment
  UC692439  Clarkia biloba Mary L. Bowerman 1935-6-15 3139 Contra Costa below Ransom Point (Eagle Point Ridge); Mount Diablo 822 Comment
  JEPS111569  Clarkia biloba subsp. biloba D. G. Kelch 2004-5-9 04 .210 Contra Costa Crockett - Eckley Hills north of Bull Valley Staging Area 13 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
  JEPS111558  Clarkia concinna subsp. concinna A. G. Murdock 2003-6-24 117 Contra Costa Vaca Canyon Alhambra Valley Road on south bank 165 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
  CAS-BOT-BC171989  Clarkia epilobioides K. Brandegee s.n. Contra Costa Antioch Comment
  UC2028301  Clarkia gracilis subsp. gracilis Barbara Ertter, Susan D'Alcamo 1998-6-12 16190 Contra Costa North Peak Trail south of Prospectors Gap on east side of Mount Diablo summit. Comment
  RSA355431  Clarkia heterandra Anstruther Davidson 1917-07 3289 Contra Costa Mt. Diabolo [Diablo] Comment
  JEPS99503  Clarkia modesta Mary Bowerman 1978-5-14 Contra Costa Mount Diablo. E side of Eagle Peak, Back Canyon trail to mine. Area of Aug 1977 burn. Comment
  UC2028270  Clarkia purpurea Barbara Ertter 1999-6-12 16707 Contra Costa Black Hawk Ridge Road between Knobcone Point Road and NE fork of Sycamore Creek, South side of Mount Diablo. Comment
  UC2029003  Clarkia purpurea Barbara Ertter 2000-5-14 16996 Contra Costa Lower Donner Canyon on north side of Mount Diablo, on Hetherington Trail. Comment
  UC692503  Clarkia purpurea subsp. purpurea Mary L. Bowerman 1933-7-14 2270 Contra Costa ridge between two main forks Curry-Cave Canyon; Mount Diablo Comment
  CAS-BOT-BC163672  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1931-5-12 6483 Contra Costa Mt. Diablo Comment
  CDA29803  Clarkia purpurea subsp. quadrivulnera D. G. Kelch, Troy MacGregor 2009-5-1 9 .263 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  JEPS75480  Clarkia rubicunda P. F. Yorks 1975-7-18 473 Contra Costa n of Briones Reservoir (ca 1.9-2.0 km s of Bear Creek Road on Hampton Road in Hampton Road Natural Reserve); Hampton Road Natural Reserve Comment
  CAS-BOT-BC165036  Clarkia rubicunda Rimo Bacigalupi s.n. Contra Costa Head of Bear Creek Valley, northern Contra Costa Co. Comment
  SEINET10777205  Clarkia rubicunda Barbara J. Ertter, J. Travis Columbus 1990-6-10 Ertter 9103 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; jct of Briones Crest and Table Top trails on grassy knoll E of Briones Peak. 427 Comment
  CAS-BOT-BC165449  Clarkia unguiculata L. R. Abrams 1916-6-30 5702 Contra Costa Mt. Diablo near lake Comment
  CAS-BOT-BC165452  Clarkia unguiculata Alice Eastwood 1922-3-17 11078 Contra Costa Mt. Diablo Comment
  JEPS43602  Clarkia unguiculata W. L. Jepson 1918-6-5 7598 Contra Costa Donner Canyon Mt. Diablo 533 Comment
  UC107949  Clarkia unguiculata Katharine Brandegee June 1905 Contra Costa Port Costa Comment
  UC692494  Clarkia unguiculata Mary L. Bowerman 1930-6-3 235 Contra Costa 1.9 mi from North Gate (North Road); Mount Diablo 167 Comment
  UC1795692  Clarkia unguiculata Barbara Ertter, Kristin Ertter 1995-7-11 14477 Contra Costa Stage Road along Pine Cr. in Diablo Foothills Regional Park southwest of Walnut Creek; partial shade of oak forest, 152 Comment
  UCD32418  Clarkia unguiculata Beecher Crampton 1950-5-13 574 Contra Costa Southwest Walnut Creek. 30 Comment
  JEPS43337  Claytonia exigua subsp. exigua H. L. Mason 1931-4-5 Contra Costa se of Mt. Diablo (on road from Marsh Creek to Livermore); Upper Marsh Creek Comment
  UC7934  Claytonia exigua subsp. exigua W. H. Brewer 1862-5-12 1082 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC439170  Claytonia exigua subsp. exigua Alice Eastwood 1915-5-30 4532 Contra Costa Unspecified Comment
  UC692552  Claytonia exigua subsp. glauca Mary L. Bowerman 1933-5-4 1998 Contra Costa e end Fossil Ridge; Mount Diablo Comment
  RSA0068500  Claytonia parviflora Katie Gallagher, Nick Jensen 2014-4-26 174 Contra Costa Las Trampas Regional Wilderness. 365 Comment
  HSC17682  Claytonia perfoliata Greg Bos 1963-4-26 87 Contra Costa Pinole Valley Rd., SE of Pinole 76 Comment
  UC1057451  Claytonia perfoliata subsp. perfoliata G. Thomas Robbins 1937-4-25 148 Contra Costa 2 mi e Alamo Comment
  UC517966  Claytonia perfoliata subsp. perfoliata John Thomas Howell 1931-3-10 5755 Contra Costa 7 mi from Clayton (on Livermore road, e side of Mt. Diablo); Mt. Diablo Comment
  UC615386  Claytonia perfoliata subsp. perfoliata Beryl O. Schreiber 1932-2-28 32 Contra Costa near Concord Comment
  UC7890  Claytonia perfoliata subsp. perfoliata W. H. Brewer 1862-5-12 1080 Contra Costa 609 Comment
  UC136298  Clematis lasiantha C. F. Baker 1903-4-28 2946 Contra Costa Mt. Diablo, Mitchells Canyon Comment
  UC692071  Clematis lasiantha Mary L. Bowerman 1930-6-7 272 Contra Costa Meridian Peak summit Mt. Diablo Comment
  OBI19648  Cleome hassleriana Harry Morten 1964-10-11 s.n. Contra Costa Lower end of San Joaquin Valley, 5 mi E of Byron Comment
  UC26677  Collinsia bartsiifolia var. bartsiifolia J. Burtt Davy 1895-4-7 877 Contra Costa Antioch Comment
  UC41779  Collinsia bartsiifolia var. bartsiifolia The Postmaster 1900-3-24 Contra Costa Oakley; Mount Diablo Region Comment
  UC26674  Collinsia heterophylla J. Burtt Davy 1895-4-8 970 Contra Costa Antioch Comment
  UC26589  Collinsia heterophylla Ivar Tiderstrom vi, 1895 Contra Costa Edwards Canyon, near Crockett Comment
  JEPS108350  Collinsia sparsiflora David Gowen, Mike Parks 2005-3-30 219 Contra Costa Mt. Diablo State Park. East facing slope at base of Alamo Canyon. 350 Comment
  POM194561  Collinsia sparsiflora Y. Mexia 1929-4-21 2376 Contra Costa Moraga Valley. Comment
  JEPS87900  Collinsia sparsiflora var. collina Barbara Ertter, Brad Olson 1992-4-13 10951 Contra Costa e of Curry Point (Mount Diablo State Park, Knobcone Point Road); Mount Diablo State Park, Knobcone Point Road 518 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
  UC672473  Collinsia sparsiflora var. collina H. L. Mason 1928-4-29 4439 Contra Costa road opposite Devils Slide Mount Diablo 365 Comment
  UC691585  Collinsia sparsiflora var. collina Mary L. Bowerman 1933-4-9 1836 Contra Costa w fork Donner Canyon Mount Diablo (Mount Diablo) 243 Comment
  JEPS100146  Collinsia sparsiflora var. sparsiflora G. Smick 2003-3-25 GAS 97 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC26660  Collinsia tinctoria Edw. L. Greene Jun 1892 Contra Costa Mount Diablo Comment
  JEPS7314  Collinsia tinctoria Mary L. Bowerman 1935-6-1 3117 Contra Costa summit Mount Diablo Mount Diablo, summit (towards Devils Pulpit) 1158 Comment
  UCD126203  Convolvulus arvensis P. B. Kennedy 1926-8-22 s.n. Contra Costa Sunset View Country. Comment
  SEINET198892  Convolvulus sepium var. communis Ira L. Wiggins 1954-5-9 13123 Contra Costa Levee along Bethel Island Comment
  UCD58755  Convolvulus simulans Glen Holstein 2007-5-1 s.n. Contra Costa Near entrance to Roddy Ranch Golf Course at southeast edge of Antioch. There is a large stock pond about 100 m NW of the entrance. The collection was in disked pasture 100 m west of the pond. Comment
  JEPS111678  Conyza bonariensis D. G. Kelch 2003-8-13 03 .119 Contra Costa Martinez - Train Station 2 Comment
  UC2027980  Conyza canadensis Barbara Ertter, Chris Thayer 1996-10-25 15391 Contra Costa Southwest flank of Mount Diablo, lower South Gate Road just inside park boundary. Comment
  JEPS95193  Cordylanthus mollis subsp. mollis Jake Ruygt 1993-9-3 Contra Costa w of Hastings Slough (Concord Naval Weapons Station) Comment
  JEPS74986  Cordylanthus nidularius T. I. and F. M. Chuang 1975-6-29 7517 Contra Costa NE of Deer Flat; Mt. Diablo Comment
  NY68297  Cordylanthus nidularius J. T. Howell 1942-7-19 17044 Contra Costa Near of Deer Flat, Mt. Diablo. Comment
Read comments 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
  UC691481  Cordylanthus pilosus subsp. pilosus Mary L. Bowerman 1936-8-8 3523 Contra Costa Emmons Canyon (Diablo Stock Farm [Wattis Ranch] Canyon, W fork Mount Diablo Comment
  SEINET12765203  Cordylanthus pilosus subsp. pilosus Barbara Ertter, Lynne Hosley 1992-8-29 11266 Contra Costa East of Moutn Diablo in canyon along Coyote Trail.; 0 Comment
  UC1818988  Cornus glabrata Barbara Ertter, M. L. Bowerman, L. Schultheis, Kevin Hintsa 1995-10-22 14538 Contra Costa Three Springs Trail on northeast side of Mt. Diablo, at stream crossing north-facing slope. Comment
  CAS-BOT-BC209589  Cornus sericea H. E. McMinn 1922-5-30 34 Contra Costa By Pinehurst Resort in Large Redwood Canyon Comment
  UC407391  Cornus sericea subsp. sericea Ira L. Wiggins 1930-4-18 4593 Contra Costa levee e. end Jersey Isl. Comment
  JEPS50131  Cornus sericea subsp. sericea W. L. Jepson 1891-6-9 14146 Contra Costa e. side Berkeley Hills, Fish Ranch Comment
  UCR263555  Coronopus didymus Barbara Ertter 1990-5-15 8991 Contra Costa San Francisco Bay Region, South El Cerrito, north foot of Albany Hill at end of Yosemite Avenue cul-de-sac 4 Comment
  CDA37900  Cortaderia jubata D. G. Kelch, Mike Perlmutter 2011-9-23 11 .755 Contra Costa Immediately north of Discovery Bay. Comment
  JEPS96226  Cortaderia jubata Barbara Ertter 1991-9-28 10854 Contra Costa e. end of Schmidt St. at recycling center El Cerrito (s. end of Hillside Natural Area) Comment
  CAS-BOT-BC169514  Corylus cornuta subsp. californica H. E. McMinn 1925-1-1 s.n. Contra Costa Lead of San Leandro Creek Comment
  RSA0027707  Cosmos bipinnatus Barbara Ertter 1996-9-19 15290 Contra Costa Cerrito Creek at base of Albany Hill, just west of San Pablo Avenue. Comment
  UC2028107  Cotoneaster pannosus Barbara Ertter with Christopher Baysdorfer 1998-5-10 16117 Contra Costa Lime Ridge Open Space northwest of Mount Diablo. Comment
  UC2029109  Cotula australis Barbara Ertter 1990-5-16 8992 Contra Costa South El Cerrito, corner of San Pablo Avenue and Carlson Blvd. Comment
  UC2032849  Cotula coronopifolia Doran, Andrew Scott 2012-3-20 720 Contra Costa Northeast part of Brooks Island, on trail to beach along spit. Comment
  UC31281  Cotula coronopifolia W. H. Brewer 1862-4-24 993 Contra Costa salt marshes near Bay Martinez Comment
  UC691659  Cotula coronopifolia Mary L. Bowerman 1931-3-29 624 Contra Costa n side of Cave Point (head of canyon); Mount Diablo; hollow on east side of Cave-Windy ridge Comment
  UC2028453  Crassula aquatica Barbara Ertter with Joanne Kerbavaz 2000-8-20 17506 Contra Costa Hidden Pond on south side of Mount Diablo Comment
  CAS-BOT-BC427570  Crassula aquatica Brandegee No date on label s.n. Contra Costa Antioch Comment
  UC1561257  Crassula connata Barbara Ertter with John Little 1989-4-2 8110 Contra Costa s. side Hillside Park in El Cerrito Comment
  CDA19637  Crepis bursifolia Doreen Smith, Wilma Follette 2003-10-25 s.n. Contra Costa San Francisco Bay Area; Briones Park. 0 Comment
  UC70200  Cressa truxillensis J. Burtt Davy May 1898 Contra Costa region of Mt. Diablo, Danville Comment
  UC1121528  Crocanthemum scoparium var. vulgare R. W. Lundh Contra Costa San Francisco Quadrangle Comment
  CDA35287  Croton californicus Chas. Lasser 1959-9-24 Contra Costa East of Byron, from Bixler Rd. to Old River. 0 Comment
  CDA38798  Crypsis schoenoides D. G. Kelch 2006-8-12 6 .377 Contra Costa Carquinez Strait; Martinez. Along Alhambra Creek near train station. Comment
  JEPS102901  Crypsis schoenoides Barbara Ertter, Chris Thayer 1996-10-25 15360 Contra Costa Little Pine Creek, Diablo Foothills Regional Park Mount Diablo Comment
  UC1618174  Crypsis schoenoides Barbara Ertter 1989-9-30 8866 Contra Costa 1 1/4 mi nw of Inspiration Point (Tilden Regional Park e of El Cerrito, East Bay Skyline National Recreation Trail (=Nimitz Way)); Tilden Regional Park, E Bay Skyline Nat'l Recreation Trail Comment
  UC1618379  Crypsis vaginiflora Barbara Ertter, Brad Olson 1993-8-8 12201 Contra Costa sw of San Ramon (Bishop Ranch Regional Open Space); Bishop Ranch Regional Open Space Comment
  UC2028263  Cryptantha clevelandii Barbara Ertter 1999-6-12 16717 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
  UC78673  Cryptantha hooveri Katharine Brandegee May 1894 Contra Costa near Antioch Comment
  UC691341  Cryptantha microstachys Mary L. Bowerman 1932-4-27 1388 Contra Costa w of Riggs Canyon (canyon, s-face of Oyster Ridge); Mount Diablo, Oyster Ridge 335 Comment
  UC691343  Cryptantha microstachys Mary L. Bowerman 1933-6-3 2226 Contra Costa 2 mi (rd) from Mount Diablo w entrance (= North Gate); Mount Diablo Comment
  POM64396  Cryptantha microstachys C. F. Baker 1903-4-28 2810 Contra Costa Mitchell s Canyon, Mt. Diablo. Comment
  SEINET3863389 Image available Cupressus macrocarpa Michael R. Tansey 1963-2-15 4 Contra Costa Moist Berkeley Clay, est exposure on hillside, east of golf courrse 30 yds. in Tilden Regional Park, Cal.; 0 183 Comment
  CDA21191  Cuscuta japonica R. Fonseca 2006-12-12 PDR 1373709 Contra Costa San Francisco Bay Area; 654 Marlesta Rd, Pinole. Sheet 1 of 2. 0 Comment
Read comments Apr 29 2013
  CDA33483  Cuscuta japonica Fonseca/Yost 2008-11-2 PDR# 1503841 Contra Costa San Pablo; 2336 Shawn Dr. 0 Comment
  CDA7755  Cuscuta japonica Niang 2008-2-13 PDR# 1454473 Contra Costa Carquinez Strait; Rodeo, 2 California St. 0 Comment
  UC2032851  Cuscuta pacifica Doran, Andrew Scott 2012-3-20 722 Contra Costa Northeast part of Brooks Island, on trail to beach along spit. Comment
  UC1949099  Cuscuta pacifica var. pacifica Barbara Ertter with Elizabeth Neese 1988-10-15 7978 Contra Costa Salicornia marsh W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue 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
  CDA6262  Cymbalaria muralis D. G. Kelch, A. G. Murdock 2005-5-23 5 .376 Contra Costa Carquinez Strait Region; Crockett - Crolona Heights. 6th Street at Lillian Street, Crockett. Comment
  CDA15228  Cynara cardunculus G. F. Hrusa, D. Crowe 1998-5-8 14357 Contra Costa Sacramento Delta; Dow Chemical at Pittsburg. Comment
  JEPS99953  Cynara cardunculus A. Langston 2003-7-17 AL 67 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UCD33766  Cynara cardunculus Beecher Crampton 1972-11-21 8888 Contra Costa 2 miles east of Crockett. Comment
  CAS-BOT-BC299745  Cynara cardunculus John Thomas Howell 1953-3-15 28922 Contra Costa Danville Comment
  CHSC23352  Cynodon dactylon Willis Ball 1975-5-15 527 Contra Costa Contra Loma Regional Park. In area #1 ca. 3 yds w of restroom facility at s end of reservoir. In lawn by beach area. 30 Comment
  JEPS99524  Cynodon dactylon Mary Bowerman 1975-9-14 Contra Costa Mount Diablo, Hidden Pond. Comment
  UC692432  Cynodon dactylon Mary L. Bowerman 1936-8-17 3526 Contra Costa Sulphur Spring in Pine Canyon Mount Diablo; , Sulphur Spring in Pine Canyon 137 Comment
  UC615167  Cynoglossum grande Beryl O. Schreiber 1932-2-27 27 Contra Costa Redwood Canyon Comment
  JEPS100020  Cynosurus echinatus S. O'Neil 2003-5-30 SEO 36 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC1563866  Cyperus eragrostis Barbara Ertter 1989-9-30 8864 Contra Costa e. El Cerrito (ca. 1 1/4 mi. n.w. of Inspiration Point, E. Bay Skyline Nat'l Recreation Trail (= Nimitz Way), Tilden Regional Park); Tilden Regional Park Comment
  CAS-BOT-BC114616  Cyperus eragrostis Walter Knight 1978-8-27 3200 Contra Costa At reservoir's Edge. Contra Loma Regional Park. 30 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
  UCD35193  Cyperus eragrostis Beecher Crampton 1953-8-25 1612 Contra Costa Richmond. Comment
  UCD150887  Cyperus esculentus James A. Neilson Jr. 1972-11-2 3615 Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 1 Comment
  CAS-BOT-BC113834  Cyperus niger John Thomas Howell 1950-7-5 26633 Contra Costa Spring along North Road, Mt. Diablo. Comment
  RSA605653  Cyperus niger var. capitatus L. C. Wheeler 1952-10-2 7000 Contra Costa Mount Diablo: ca. 0.8 mile up from Turtle Ranch, ca. 1 mile downhill from divide in road. Comment
  UC2028349  Cypselea humifusa Barbara Ertter 2005-8-18 18635 a Contra Costa Mudflats on SE side of San Pablo Reservoir in East BAy Hills, east of San Pablo Dam Road between San Pablo and Orinda, access between HQ and boat launching area [reservoir way down this year while being drained for seismic work on dam] Comment
  JEPS100018  Dactylis glomerata S. O'Neil 2003-5-8 SEO 33 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2029145  Datura stramonium Barbara Ertter 1999-8-21 16790 Contra Costa Lower Mitchell Canyon Road on NW base of Mount Diablo. Comment
  JEPS111628  Daucus pusillus D. G. Kelch 2005-5-1 05 .187 Contra Costa Crockett - Edwards Canyon, near top of canyon. 150 Comment
  UCD36025  Deinandra corymbosa Beecher Crampton 1949-6-5 470 Contra Costa along Highway 40, Pinole to San Pablo, above Garrity Creek, on top of West Hills. 30 Comment
  UC126849  Deinandra kelloggii Mrs. K. Brandegee 1907-5-5 19 Contra Costa near Antioch Comment
  UC365836  Deinandra kelloggii Mrs. K. Curran Contra Costa near Antioch Comment
  UC990571  Deinandra kelloggii James I. McMurphy 1908-10-18 Contra Costa Antioch Comment
  CAS-BOT-BC291807  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
  UCD95636  Delphinium californicum P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. 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
  SEINET5546958  Delphinium californicum H. S. Gentry 1931-1 46 Contra Costa Collected near Buckle Point, Mount Diablo. Comment
  UC1018502  Delphinium hansenii subsp. hansenii H. Lewis and C. Epling 1946-5-5 605 Contra Costa 0.5 mi s Somersville Comment
  UC2029185  Delphinium hesperium Barbara Ertter 2000-5-14 17004 Contra Costa Donner Canyon on north side of Mount Diablo, junction of Donner Canyon, Cardinet Oaks, and Meridian Ridge Roads. Comment
  POM300586  Delphinium hesperium Mary L. Bowerman 1931-5-2 786 Contra Costa Foot of Eagle Point ridge: Grassy slope at edge of wooded hill Comment
  JEPS107086  Delphinium hesperium subsp. hesperium Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14242 Contra Costa South side Mount Diablo, near head of Curry Creek along road to Sheepherders Springs from Sloan Road. Comment
  JEPS6231  Delphinium hesperium subsp. hesperium Willis L. Jepson May 23-24 1891 21394 Contra Costa Mt. Diablo 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
  UC2027807  Delphinium hesperium subsp. hesperium Barbara Ertter with Holly Forbes 1997-4-20 15545 Contra Costa North base of Mount Diablo, trail to Back Creek from Mitchell Canyon trailhead. Comment
  JEPS6250  Delphinium hesperium subsp. pallescens W. L. Jepson 1923-6-10 9998 Contra Costa Upper Marsh Creek Mount Diablo 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
  JEPS112062  Delphinium nudicaule A. G. Murdock 2004-4-30 243 Contra Costa Vaca Canyon 165 Comment
  UC596470  Delphinium nudicaule R. F. Hoover 1938-5-4 3340 Contra Costa Marsh Creek canyon Comment
  UC69615  Delphinium parryi subsp. parryi R. C. Marsh 1900-4-5 Contra Costa Oakley Comment
  UCD96542  Delphinium patens P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo Summit. Comment
  UC635344  Delphinium patens H. L. Mason 1929-3-29 5136 Contra Costa Marsh Creek Rd 2 mi above Clayton Comment
  CAS-BOT-BC116462  Delphinium patens subsp. patens E. M. Zeile 1910-4-2 s.n. Contra Costa Fish Ranch Comment
  UC692139  Delphinium variegatum Mary L. Bowerman 1938-6-3 3651 Contra Costa Rock City Mount Diablo (n-facing slope) 518 Comment
  UC9250  Delphinium variegatum J. Burtt Davy 1895-4-8 971 Contra Costa foothills Antioch Comment
  LA207575  Delphinium variegatum H. Lewis; Carl Epling 1944-5-6 sn Contra Costa 1 mi. S of Marsh Creek Rd. on the Beck Rd. to Livermore Comment
  UC634890  Dendromecon rigida H. L. Mason 1925-1-11 1177 Contra Costa Moraga Ridge Comment
  UC1024732  Deschampsia danthonioides Leo Whitney 1935-4-21 3057 Contra Costa 4 mi. e. Corral Hollow Comment
  UC692393  Deschampsia danthonioides Mary L. Bowerman 1935-6-28 3164 Contra Costa s. side Meridian Peak (Mt. Diablo); Mt. Diablo 548 Comment
  UC2029179  Deschampsia elongata Barbara Ertter with Alan Prather 2003-6-7 18209 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, Coyote Trail. Comment
  UC521723  Dicentra chrysantha Joseph Andorfer Ewan 1933-10-15 8030 Contra Costa s slope Mt. Diablo 1066 Comment
  UC2032818 Image available Dichelostemma capitatum Doran, Andrew Scott 2012-3-20 688 Contra Costa North end of Brooks Island along ridge overlooking artificial spit, southwest of caretakers residence. Comment
  UC400148  Dichelostemma capitatum Ynes Mexia 1929-4-21 2385 Contra Costa Moraga Valley Comment
  CAS-BOT-BC500090  Dichelostemma capitatum Alice Eastwood 1921-4-10 10195 Contra Costa Willows Comment
  JEPS100060  Dichelostemma capitatum subsp. capitatum G. Smick 2003-2-20 GAS 45 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS112500  Dichelostemma congestum D. G. Kelch 2004-4-11 04 .71 Contra Costa Crockett - Bull Valley. EBRPD. Between Crockett and Port Costa 25 Comment
  CAS-BOT-BC502553  Dichelostemma congestum Alice Eastwood 1915-5-30 4474 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC150329  Diplacus aurantiacus Alice Eastwood 1915-5-30 4455 Contra Costa Mt. Diablo Comment
  UCD137497  Dipsacus fullonum P. B. Kennedy 1917-2-8 s.n. Contra Costa Craigmont. Comment
  OBI3339  Dirca occidentalis Neil Havlik 1969-3-25 310 Contra Costa On the NE slope of Grizzly Peak 488 Comment
  SBBG26819  Dirca occidentalis J. A. Ewan 1934-3-10 8643 Contra Costa 2 mi below Orinda Rd bridge, Wildcat Cyn Comment
  UC3564  Disporum hookeri unknown 1862-5-16 1099 Contra Costa s of Mount Diablo Comment
  UC792334  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
  UCD64182  Distichlis spicata John Thomas Howell; Gordon H. True 1972-6-29 48925 Contra Costa On Byron Hot Springs Road southeast of Byron. Comment
  UCD64380  Distichlis spicata var. stolonifera A. A. Beetle 1941-6-24 1752 Contra Costa Point Richmond on San Francisco Bay. Comment
  SEINET10558207  Distichlis spicata var. stolonifera Alan A. Beetle 1941-6-24 Beetle 1752 Contra Costa Point Richmond on San Francisco Bay, common in wet sandy places. Comment
  RSA739726  Dittrichia graveolens John Dittes 2006-10-26 1412 Contra Costa San Joaquin Valley (foothills near NW edge) 2 air mile S of Marsh Creek Reservoir Gauging Station, 1.6 air mile SW of intersection of Camino Diablo and Vasco Road, Contra Costa Water District's Los Vaqueros Watershed Mitigation. 67 Comment
  UC635473  Dodecatheon clevelandii subsp. patulum H. L. Mason 1934-4-4 8058 Contra Costa Marsh Creek Road Comment
  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
  POM287080  Dodecatheon hendersonii Lyman Benson 1935-3-16 6279 Contra Costa Mitchell Canyon near Clayton; Mt. Range: Mt. Diablo; Watershed: Walnut Creek. 244 Comment
  UC517947  Dodecatheon hendersonii John Thomas Howell 1931-3-10 5756 Contra Costa on Livermore Road 7 mi from Clayton; e side Mt. Diablo, 7 mi from Clayton Comment
  UC22384  Dodecatheon hendersonii H. P. Chandler 1900-3-23 Contra Costa Bryants region of Mount Diablo, Bryants Comment
Read comments May 4 2007
  UCSB11262  Dodecatheon hendersonii Hayes, Judy 1961-3-29 Contra Costa 2 miles N of Danville on Cliffhill Road Comment
  POM287494  Dodecatheon hendersonii subsp. cruciatum Lyman Benson 1931-3-18 2666 Contra Costa Martinez; Mt Range: South Coast; Watershed: Sacramento River. 91 Comment
  JEPS18331  Downingia insignis Lewis S. Rose 1936-4-24 36154 Contra Costa 8 mi s Antioch 30 Comment
  POM148045  Downingia insignis Alice Eastwood 1939-5-19 14444 Contra Costa Byron Springs. Comment
  UC1188738  Downingia insignis John H. Weiler 1961-4-9 6174 Contra Costa 3 mi w Byron (on the w side of the road) Comment
  UC1189259  Downingia insignis John R. Swanson 1958-4-15 236 Contra Costa 3 mi s Byron (at junction of Holey road) Comment
  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
  RSA166380  Downingia ornatissima var. eximia John H. Thomas 1953-4-25 3003 Contra Costa Empire Mine Road near Antioch Golf Course. South of Antioch. Comment
  JEPS14473  Downingia pulchella G. Thomas Robbins with Peter H. Raven 1956-4-28 3666 Contra Costa just e. of Martinez junction & 0.1 mi w. of Buchanan Field Rd. State Hwy. 4 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
  UCD55128  Downingia pulchella Beecher Crampton 1950-4-22 535 Contra Costa Contra Costa County, Concord Valley, between Highway 4 and Buchanan Field (airport). 15 Comment
  JEPS112089  Drymocallis glandulosa var. glandulosa D. G. Kelch 2004-5-2 04 .170 Contra Costa Crockett - Edwards Canyon 125 Comment
  UC691093  Drymocallis glandulosa var. wrangelliana Mary L. Bowerman 1930-6-18 343 Contra Costa Dan Cook Canyon Mount Diablo, Dan Cook Canyon Comment
  CAS-BOT-BC70861  Dryopteris arguta O. N. Sanford 1878-11-24 s.n. Contra Costa Mt. Diablo Comment
  UC1948932  Dryopteris arguta William J. Ferlatte, L. Maynard Moe 1970-4-27 1245 Contra Costa San Francisco Bay: Red Rock Island Comment
  SD70421  Dudleya abramsii subsp. setchellii W. L. Jepson 1918-6-5 7604 Contra Costa Mt. Diablo, on north peak. 1064 Comment
Read comments Feb 4 2013
  UC1015449  Dudleya caespitosa Reid Moran Contra Costa from the garden of Mrs. E. C. Dempster Orinda Comment
  SD51677  Dudleya farinosa G. Thomas Robbins 1959-5-16 4007 Contra Costa Rocky hillside just south of Pt. San Pablo, Potrero Hills, Richmond. Comment
  UCD150886  Dysphania ambrosioides James A. Neilson Jr. 1972-11-9 s.n. Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 1 Comment
  JEPS128780  Dysphania chilensis Kevin Hintsa 2000-8-17 Contra Costa Mount Diablo State Park, flats just upstream from Pine Pond's willow forest. Comment
  UC2028468  Echinochloa colona Barbara Ertter 1997-8-24 15776 Contra Costa Mount Diablo, Summit Road just above Junction Station Comment
  SJSU10392  Echinochloa crus-galli J. E. Cox 1976-11-26 Contra Costa right of way of Dolores E Bay Municipal Utilities District, Lafayette Comment
  UCD150908  Echinochloa crus-galli James A. Neilson Jr. 1972-11-2 3611 Contra Costa Walnut Creek drainage at State Highway 4. Elevation estimated using Google Earth by label maker. 1 Comment
  UC1050510  Echium fastuosum N. Floy Bracelin 1941-4-20 1215 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1606336  Elatine californica Barbara Ertter, Brad Olson 1991-9-28 10829 Contra Costa betw Orinda and El Sobrante San Pablo Reservoir Comment
  JEPS99512  Eleocharis acicularis Mary L. Bowerman 1975-9-14 s. n. Contra Costa Hidden Pond, Mount Diablo Comment
  UC1606337  Eleocharis acicularis Barbara Ertter, Brad Olson 1991-9-28 10832 Contra Costa S end of San Pablo Reservoir between Orinda and El Sobrante Comment
  UC1618280  Eleocharis macrostachya Barbara Ertter, Brad Olson 1991-9-28 10836 Contra Costa S end of San Pablo Reservoir, between Orinda and El Sobrante 91 Comment
  RSA264278  Elymus X gouldii A. A. Beetle 1941-6-24 1751 Contra Costa Pt. Richmond on San Francisco Bay Comment
  SEINET3929470  Elymus condensatus A. A. Beetle 1941-7-24 1751 Contra Costa Pt. Richmond on San Francisco Bay.; 0 Comment
  CDA1574  Elymus glaucus D. G. Kelch 2002-5-24 2 .017 Contra Costa Carquinez Strait; 5th St. Prairie, Crockett. Comment
  UC1789176  Elymus glaucus Barbara Ertter 2002-6-16 17953 Contra Costa Richmond Field Station, southwest end of overgrown meadow near boundary with park, edge of thick growth facing fence. Comment
  UC691202  Elymus glaucus Mary L. Bowerman 1933-5-21 2154 Contra Costa n-facing slope below Grape Spring (s from Curry Canyon); Mount Diablo Comment
  JEPS68572  Elymus glaucus subsp. glaucus W. L. Jepson 1923-6-10 9994 Contra Costa Upper Marsh Creek Mt. Diablo Comment
  CAS-BOT-BC203431  Elymus glaucus subsp. glaucus Mary L. Bowerman 1934-4-21 2542 Contra Costa Mount Diablo. Beside Pioneer Camp road east of Pioneer Camp Comment
  UC691178  Elymus trachycaulus Mary L. Bowerman 1935-6-15 3128 Contra Costa ridge running n from Mitchell-Pine divide (at 3100 ft level); Mount Diablo 868 Comment
  UC692424  Elymus trachycaulus Mary L. Bowerman 1935-5-18 3030 Contra Costa n summit parkijng area; Mount Diablo 1066 Comment
  JEPS1564  Emmenanthe penduliflora W. L. Jepson 1920-8-12 9075 Contra Costa Mt. Diablo Comment
  UC691699  Emmenanthe penduliflora Mary L. Bowerman 1933-4-26 1916 Contra Costa Mount Diablo: North Peak ridge east southeast of the peak, south face 609 Comment
  UC2042778  Epilobium brachycarpum Barbara Ertter 1990-9-10 9637 Contra Costa Briones Regional Park, Briones Hills S of Martinez, eroded N-facing draw between Sindicich and Maricich lagoons. Comment
  UC692458  Epilobium brachycarpum Mary L. Bowerman 1932-10-1 1600 Contra Costa ridge s Uncle Sam Canyon (w base of point, 200 ft above canyon bottom); Mount Diablo, Eagle Point Comment
  UCD150893  Epilobium brachycarpum James A. Neilson Jr.; Samuel A Bamberg 1975-10-22 3497 Contra Costa Walnut Creek drainage at State Highway 4. Elevation estimated using Google Earth by label maker. 1 Comment
  CDA22547  Epilobium canum D. G. Kelch, Mike Park 2008-9-1 8 .296 Contra Costa Carquinez Strait; North of Waterbird Park along RR tracks. E of Martinez. Comment
  CAS-BOT-BC166165  Epilobium canum subsp. canum A. D. E. Elmer 1903-7-1 4620 Contra Costa Mount Diablo Comment
  UC634754  Epilobium canum subsp. canum H. L. Mason 1924-11-23 1169 Contra Costa Las Trampas Ridge 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
  CAS-BOT-BC166168  Epilobium canum subsp. canum H. E. McMinn 92 Contra Costa From n. slope of Mt. Diablo near the summit Comment
  UC1122560  Epilobium ciliatum subsp. ciliatum H. S. Yates 1934-9-2 4074 Contra Costa 1 1/2 mi nw Orinda; Concord Quadrangle Comment
  UC1191729  Epilobium ciliatum subsp. ciliatum Malcolm A. Nobs and S. Galen Smith 1949-7-8 944 Contra Costa 4 mi n Kingston; Otto's Black Bass Resort Comment
  UC1818995  Epilobium ciliatum subsp. ciliatum Barbara Ertter, Tom Schweich, Marion Reeves, & other volunteers 1996-5-11 14632 Contra Costa Little Pine Creek at northwest foot of Mt. Diablo, along trail connecting North Gate Road to Castle Rock Road, Diablo Foothills Regional Park; along stream above stable, riparian vegetation. 91 Comment
  UC1122344  Epilobium densiflorum H. S. Yates 1934-9-2 4075 Contra Costa 1 1/2 mi nw Orinda; Concord Quadrangle Comment
  UC615553  Epilobium densiflorum Beryl O. Schreiber 1933-10-5 936 Contra Costa road to Mount Diablo; marshy ground Comment
  CDA9496  Epilobium pygmaeum D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .22 Contra Costa Byron Airport. Comment
  CDA31168  Epipactis helleborine D. G. Kelch 2008-9-2 8 .305 Contra Costa Carquinez Strait.; Pinole Valley Park. Comment
  RSA0027403  Epipactis helleborine Barbara Ertter 1999-7-17 16769 Contra Costa Tilden Regional Park, trail to Jewel Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  UC2029016  Epipactis helleborine Barbara Ertter 1999-7-17 16769 Contra Costa Tilden Regional Park, trail to Jewel Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  UC1050456  Epiphyllum N. Floy Bracelin 1941-5-4 1271 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  UC692132  Equisetum laevigatum Mary L. Bowerman 1931-10-31 1063 Contra Costa South Rd. in bend of rd. a little below junction Mt. Diablo 853 Comment
  UC2029181  Equisetum telmateia subsp. braunii Barbara Ertter with Alan Prather 2003-6-7 18202 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, creek alongside west end Stone Corral Trail, south of Highland Ridge Trail junction. Comment
  CDA42475  Equisetum telmateia var. braunii D. G. Kelch 2004-7-9 04 .292B Contra Costa Carquinez Strait; Crockett; Edwards Creek, immediately below high school. Comment
  CDA2083  Eragrostis curvula H. R. VanBrocklin 1961-4-12 Contra Costa North side Marsh Creek Road, 1 mile east of Clayton. 0 Comment
  RSA118089  Eragrostis curvula J. T. Howell 1954-9-5 30026 Contra Costa Along road, Marsh Creek Springs Park Comment
  UCD63093  Eragrostis curvula Beecher Crampton 1965-9-29 7526 Contra Costa 5 miles south of Brentwood Vasco Road and Camino Vaqueros. Comment
  UCD63814  Eragrostis mexicana subsp. virescens Beecher Crampton 1965-9-29 7531 Contra Costa 1 mile south of Oakley, Cypress Road and O' Hara Ave. Comment
  CDA4553  Erechtites glomeratus D. G. Kelch 2005-5-5 5 .218 Contra Costa Carquinez Strait Region; Point Pinole - Giant Marsh. Giant Salt Marsh. Comment
  UC908868  Eriastrum pluriflorum Herbert L. Mason 1933-6-10 7252 Contra Costa Brentwood Comment
  CAS-BOT-BC287530  Ericameria linearifolia W. W. Carruth 1902-4-29 s.n. Contra Costa Mt Diablo Comment
  POM359374  Ericameria linearifolia H. E. McMinn 1922-6-2 96 Contra Costa Near summit of Mt. Diablo Comment
  RSA102866  Ericameria linearifolia H. N. Bolander 1866-1 6141 Contra Costa Monte [Mount] Diablo Comment
  UC1543101  Ericameria linearifolia Donald G. Nelson 1937-4-18 503 Contra Costa on March Creek Road in canyon between Clayton and Byron (near stream along highway, dry sandy clearing near wood) Comment
  UC672254  Ericameria linearifolia H. L. Mason 1926-3-7 2707 Contra Costa near summit Mount Diablo Comment
  CAS-BOT-BC287533  Ericameria linearifolia Rattan 1886-6-14 s.n. Contra Costa W slope of Mt Diablo Comment
  SEINET10617379  Ericameria linearifolia John T. Middleton 1936-4-18 Middleton 137 Contra Costa Marsh Creek Rd. - 8 mi. east of Clayton. Comment
  SEINET5552883  Ericameria linearifolia H. S. Gentry 1931-1 54 Contra Costa Collected near Mt. Diablo. Comment
  UC697206  Ericameria linearifolia Mary L. Bowerman 1938-5-28 3649 Contra Costa Silver Creek Nook Mount Diablo, Silver Creek Nook (North Road, peeping out from under a willow) 640 Comment
  UC31471  Erigeron foliosus var. franciscensis Edw. L. Greene 1892-6-20 Contra Costa Mount Diablo Comment
  UC87533  Erigeron foliosus var. franciscensis T. S. Brandegee 1883-7-1 Contra Costa Antioch Comment
  CAS-BOT-BC295718  Erigeron petrophilus var. petrophilus John Thomas Howell 1923-11-12 249 Contra Costa Mt. Diablo Comment
  RSA15452  Eriodictyon californicum Alice Eastwood, J. T. Howell 1936-4-19 s.n. Contra Costa Nortonville. Comment
  UC194953  Eriogonum angulosum H. M. Hall 1916-8-17 10276 Contra Costa Deer Valley 182 Comment
  CAS-BOT-BC250382  Eriogonum gracile John Thomas Howell 1929-9-21 4392 Contra Costa Marsh Creek Road 8 miles se. of Clayton Comment
  CAS-BOT-BC250387  Eriogonum gracile John Thomas Howell 1929-7-20 4330 Contra Costa 2 miles s. of Oakley Comment
  RSA0027415  Eriogonum gracile Barbara J. Ertter 1997-8-24 15773 Contra Costa Mount Diablo, SE side of peak on Mary Bowerman/Fire Interpretive Trail. Comment
  UC692017  Eriogonum gracile var. gracile Mary L. Bowerman 1930-6-7 279 Contra Costa summit of Mount Diablo Mount Diablo Comment
  UC85768  Eriogonum gracile var. gracile T. S. Brandegee 1890-1 Contra Costa Mt. Diablo Comment
  UC737822  Eriogonum luteolum var. luteolum R. F. Hoover 1940-11-23 4693 Contra Costa 8 mi e on Marsh Creek Road Clayton Comment
  CAS-BOT-BC268915  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-9-17 1585 Contra Costa Mount Diablo. Donner Canyon, West fork: of west fork 335 Comment
  CAS-BOT-BC268918  Eriogonum nudum var. auriculatum L. R. Abrams 1910-10-8 4340 Contra Costa Mt Diablo 609 Comment
  UC692164  Eriogonum nudum var. auriculatum Mary L. Bowerman 1931-10-13 1060 Contra Costa east fork Alamo Canyon; Mount Diablo Comment
  UC692198  Eriogonum nudum var. auriculatum Mary L. Bowerman 1932-10-1 1597 Contra Costa s Uncle Sam Canyon (Eagle Point Ridge); Mount Diablo Comment
  CAS-BOT-BC269819  Eriogonum nudum var. psychicola Peter Rubtzoff 1951-10-7 825 Contra Costa Along lower San Joaquin River, east of Antioch Comment
  UC1926783 Image available Eriogonum nudum var. psychicola Barbara Ertter 1997-8-18 15766 Contra Costa Contra Costa County: Antioch Dunes on San Joaquin River east of Antioch. Comment
  UC635005  Eriogonum nudum var. pubiflorum H. L. Mason 1929-9-21 5433 Contra Costa 3 mi above Clayton (Marsh Creek road) Comment
  JEPS105714  Eriogonum roseum David Gowen 2004-8-26 156 Contra Costa Black Diamond Mines Regional Preserve; 3/8 mi from parking area on Frederickson Lane, on Old Homestead Loop, just SW of its junction with the Homestead Trail Comment
  CAS-BOT-BC267440  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
  CAS-BOT-BC267449  Eriogonum truncatum M. K. Curran 1886-5-1 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC267872  Eriogonum umbellatum var. bahiiforme A. D. E. Elmer 1903-7-1 4547 Contra Costa Mount Diablo Comment
  CAS-BOT-BC262345  Eriogonum vimineum Joseph Andorfer Ewan 1933-10-15 8022 Contra Costa S.W. slope Mt. Diablo Comment
  CAS-BOT-BC262348  Eriogonum vimineum Mary L. Bowerman 1932-8-27 1524 Contra Costa Mount Diablo. South of Turtle Rock Comment
  UC507127  Eriophyllum confertiflorum var. confertiflorum Lincoln Constance 1933-6-25 E 95 Contra Costa about one - half way to the summit of Mt. Diablo (s slopes) Comment
  UC691686  Eriophyllum confertiflorum var. confertiflorum Mary L. Bowerman 1933-5-18 2121 Contra Costa near Blackberry Spring; Mount Diablo Comment
  CDA10029  Eriophyllum jepsonii D. G. Kelch 2007-4-28 7 .203 Contra Costa Mitchell Canyon. Mt Diablo. Comment
  UC507131  Eriophyllum lanatum var. achilleoides Lincoln Constance 1933-6-25 E 99 Contra Costa just below summit on east slope Mount Diablo 1066 Comment
  UC507133  Eriophyllum lanatum var. achilleoides Lincoln Constance 1933-6-25 E 101 Contra Costa just below summit on south slope Mount Diablo 1158 Comment
  UC691662  Eriophyllum lanatum var. achilleoides Mary L. Bowerman 1935-5-30 3097 a Contra Costa Eagle Point ridge = between the two n ridges which converge at Twin Peaks; Mt. Diablo, Eagle Point ridge 350 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-BC300982  Eriophyllum lanatum var. achilleoides Lincoln Constance; Helen Sharsmith; Carl Sharsmith 1933-4-30 E 17 Contra Costa Black Hills, Mount Diablo Comment
  POM161398  Eriophyllum lanatum var. achilleoides H. E. McMinn 1922-6-30 98 Contra Costa Roadside on Mt. Diablo Comment
  RSA97649  Eriophyllum lanatum var. achilleoides J. T. Howell 1950-7-5 26636 Contra Costa Brushy slope above Nortonville Comment
  UC2028366  Eriophyllum lanatum var. achilleoides Barbara Ertter 1998-6-20 16258 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, south side of Flat Top Comment
  UC2032830  Eriophyllum staechadifolium Doran, Andrew Scott 2012-3-20 700 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  JEPS111973  Erodium botrys D. G. Kelch 2004-4-26 04 .148 Contra Costa Point Pinole 1 Comment
  UC1948936  Erodium cicutarium William J. Ferlatte, L. Maynard Moe 1970-4-27 1263 Contra Costa San Francisco Bay: Red Rock Island Comment
  UCSB12514  Erodium cicutarium Grah, Nancy 1962-4-14 Contra Costa 0.6 mile north of Tarry Lane on Tappan Lane; Orinda 243 Comment
  UC17071  Erodium macrophyllum W. H. Brewer 1862-5-10 1067 Contra Costa near Kirker Pass Comment
  UC762242  Erodium macrophyllum R. F. Hoover 1941-4-12 4838 Contra Costa 1 mi n Lone Tree Valley Comment
  JEPS100094  Erodium moschatum G. Smick 2003-4-1 GAS 104 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CDA38328  Eryngium armatum D. G. Kelch 2007-4-1 7 .108 Contra Costa Carquinez Strait; Pt. Pinole. Comment
  UC691872  Eryngium castrense Mary L. Bowerman 1931-6-16 926 Contra Costa by old <Govornment> Trail Chase Pond; Mt. Diablo, Chase Pond 563 Comment
  UC2026171  Eryngium castrense Barbara Ertter with Tony Morosco 1996-1-15 14547 Contra Costa Mount Diablo (southeast side) trail from Curry Point to Frog Pond; edge of Sheepherder Pond. Comment
  UC1729582  Eryngium racemosum Leslie Zander 1998-10-9 Contra Costa near Discovery Bay West (just s of eastern terminus of Point of Timber Road and w of Kellogg Creek) Comment
  CAS-BOT-BC40763  Erysimum capitatum John Thomas Howell 1926-3-7 1672 Contra Costa Mount Diablo. Near the summit on south side. Comment
  NY32656  Erysimum capitatum subsp. angustatum A. Eastwood 1936-4-19 2151 Contra Costa Antioch sand hills. Comment
  RSA0008585  Erysimum capitatum var. angustatum Glenn A. Gorelick 1967-4-4 s.n. Contra Costa 1.5 miles east of Antioch Comment
  UC1034753  Erysimum capitatum var. capitatum G. B. Rossbach 1955-3-13 570 Contra Costa dunes along tidal estuary of river just e Antioch; San Joaquin R Comment
  CAS-BOT-BC151467  Erythranthe latidens Alice Eastwood; John Thomas Howell 1936-4-19 2155 Contra Costa 4 miles s. of Antioch Comment
  UC1819026  Eschscholzia californica Barbara Ertter, Chris Thayer 1995-4-25 13996 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Black Hawk Ridge Rd. on north side Black Hawk Ridge. 548 Comment
  UC2032838 Image available Eschscholzia californica Doran, Andrew Scott 2012-3-20 708 Contra Costa Second highest point on Brooks Island, rocky outcrop overlooking man-made spit. Comment
  UC692105  Eschscholzia californica Mary L. Bowerman 1933-5-3 1973 Contra Costa due s Meridian Peak summit (on hillside above flat); Mount Diablo Comment
  RSA39848  Eschscholzia californica var. crocea P. A. Munz 1947-10-8 12190 Contra Costa Antioch 12 Comment
  JEPS96222  Eucalyptus globulus Barbara Ertter, Brad Olson 1993-10-30 12293 Contra Costa w. of R.R. tracks n. of mouth of Pinole Creek (along R.R. track at edge of salicornia marsh, San Pablo Regional Shoreline); San Pablo Regional Shoreline Comment
  UC1789211  Eucalyptus globulus Barbara Ertter 2002-5-11 17840 Contra Costa lower Emmons Canyon just outside of Mount Diablo State Park boundary. Comment
  UC1789208  Eucalyptus tereticornis Barbara Ertter 2000-5-20 17026 Contra Costa Sibley Volcanic Regional Preserve, Oakland Hills, trail on ridge behind interpretative center. Common tree, bark flaking, flowers white, only trees largest starting to bloom (hence open flowers out of reach). Comment
  UC1789215  Eucalyptus tereticornis Barbara Ertter with Dan Norris 2001-4-8 17604 Contra Costa Lime Ridge Open Space, main pit of west quarry area north of adjacent golf course 121 Comment
  JEPS1727  Eucrypta chrysanthemifolia var. chrysanthemifolia W. L. Jepson 1891-6-9 21003 Contra Costa Fish Ranch Road; Berkeley Hills Comment
  UC880659  Eucrypta chrysanthemifolia var. chrysanthemifolia Lewis S. Rose 1941-5-15 41232 Contra Costa w slope Mt. Diablo 396 Comment
  CDA4843  Euphorbia oblongata T. C. Fuller 1961-7-6 6585 Contra Costa Carquinez Strait; Alhambra Valley, Highway 4, 0.5 mile west of Glen Frazier Station, ca. 4 miles west of Martinez. 0 Comment
  RSA119277  Euphorbia oblongata T. C. Fuller 1958-7-30 s.n. Contra Costa Contra Costa County: bench above creek and along roadside, Hwy 4, 3 miles W of Martinez 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
  UC1818921  Euphorbia spathulata Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14222 Contra Costa Mt. Diablo southeast of Walnut Creek, north-facing slope north of Curry Point, grassy semishade at edge of oak woodland. 518 Comment
  CAS-BOT-BC278317  Festuca californica subsp. californica Mary L. Bowerman 1931-5-2 788 Contra Costa Mount Diablo. North end of Eagle Point ridge Comment
  POM300669  Festuca californica var. californica Mary L. Bowerman 1931-4-25 757 Contra Costa Mount Diablo, near junction of South and West roads. Comment
  UC2028473  Festuca idahoensis Barbara Ertter with Richard K. Brummitt 1998-5-6 16099 Contra Costa Western Drive on Point San Pablo/Point Molate west of Richmond, base of roadcut south of Naval Fuel Depot Comment
  UC2028144  Festuca microstachys Barbara Ertter 1998-4-4 15971 Contra Costa Shell Ridge Open Space northwest of Mount Diablo, Fossil Hill. Comment
  JEPS127231  Festuca microstachys var. pauciflora Lowell Ahart, Josephine Guardino 2016-4-19 20792 Contra Costa 2.3 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest to Stockton. Undesignated section of Canada de Los Vaqueros Land Grant, Byron Hot Springs USGS 7.5' Quad. Comment
  CDA28215  Festuca rubra D. G. Kelch, Andrew G. Murdock 2004-4-11 4 .064 Contra Costa Carquinez Strait; Meadow above Carquinez Scenic Drive between Crockett and Bull Valley Staging Area. Comment
  RSA244714  Frankenia salina J. T. Howell, G. H. True 1972-6-29 48919 Contra Costa On Byron Hot Springs Road SE of Byron. Comment
  RSA739727  Frankenia salina John Dittes 2006-10-26 1413 Contra Costa San Joaquin Valley (foothills near NW edge) 2 air mile S of Marsh Creek Reservoir Gauging Station, 1.6 air mile SW of intersection of Camino Diablo and Vasco Road, Contra Costa Water District's Los Vaqueros Watershed Mitigation. 67 Comment
  UC1122130  Frankenia salina C. M. Belshaw 1936-5-9 2080 Contra Costa 1.5 mi e Mulligan Hills; Mt. Diablo Quad. 152 Comment
  UCD99590  Frankenia salina John Thomas Howell; Gordon H. True 1972-6-29 48919 Contra Costa on Byron Hot Springs Road southeast of Byron. Comment
  POM300728  Fraxinus dipetala Mary L. Bowerman 1930-6-22 363 Contra Costa Mount Diablo: Mitchell Canyon Comment
  CDA39689  Fraxinus latifolia D. G. Kelch 2003-8-13 3 .143 Contra Costa Carquinez Strait; Pinole Creek. Comment
  JEPS61960  Fritillaria affinis W. L. Jepson 1921-11-19 8524 Contra Costa Mount Diablo Comment
  CAS-BOT-BC136073  Fritillaria affinis Dean William Taylor 1971-3-28 971 Contra Costa Along Morgan Territory Road 304 Comment
  POM204038  Fritillaria affinis Lewis S. Rose 1934-3-7 34047 Contra Costa Mount Diablo Comment
  UC672117  Fritillaria agrestis Herbert L. Mason 1929-3-15 5057 Contra Costa about 5 mi from Brentwood (Marsh Creek Road); Marsh Creek Road Comment
  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
  JEPS124468  Galium andrewsii subsp. gatense Daniel Slakey with CNPS Volunteers 2015-7-6 139 Contra Costa Mt Diablo, along Oak Knoll Trail about 350 meters east of Summit Rd. Comment
  UC2028299  Galium californicum subsp. californicum Barbara Ertter with Susan D'Alcamo 1998-6-12 16202 Contra Costa Along Curry Canyon Road on south side of Mount Diablo, halfway between Knobcone Point Road and Sheepherder Springs Trail. Comment
  UC703118  Galium murale John Thomas Howell 1942-4-26 16953 Contra Costa Redwood Canyon Oakland Hills Comment
  RSA0028271  Galium murale Barbara Ertter, J. Travis Columbus 1990-6-10 9114 Contra Costa NE corner of Briones Regional Park, Briones Hills W of Pleasant Hill; edge of stream near crossing on Spengler Trail NE of Briones Peak. 183 Comment
  JEPS112107  Galium porrigens var. porrigens D. G. Kelch 2003-4-3 03 .357 Contra Costa Cummings Skyway 134 Comment
  JEPS75526  Galium porrigens var. porrigens P. F. Yorks 1975-6-10 434 Contra Costa on Hampton Rd ca 1.4 km s Bear Creek Road (n of Briones Reservoir); Hampton Road Natural Reserve 180 Comment
  CAS-BOT-BC304346  Gamochaeta pensylvanica Gordon H. True 1975-6-27 7872 A Contra Costa Tilden Regional Park Botanic Garden, Tilden Regional Park, Wildcat Canyon Comment
  CAS-BOT-BC200632  Garrya elliptica H. E. McMinn 1925-3-30 1403 Contra Costa Near summit Thornhill Rd and Skyline Blvd. Comment
  UC21587  Garrya elliptica Willis L. Jepson 1892-3-5 Contra Costa Redwood Peak Comment
  CAS-BOT-BC169945  Garrya fremontii H. E. McMinn 1922-6-2 88 Contra Costa Summit of Mt. Diablo Comment
  CAS-BOT-BC169948  Garrya fremontii Lewis S. Rose 1954-6-29 54084 Contra Costa Mt. Diablo, summit 1170 Comment
  CAS-BOT-BC282608  Gastridium phleoides Mary L. Bowerman 1933-5-25 2190 Contra Costa Oyster Ridge, west end of south face, Mount Diablo Comment
  JEPS111082  Gastridium ventricosum Lee Echols 2003-6-15 s.n. Contra Costa S. of Lark Drive in E portion of grassland W of EPA building within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond 15 Comment
  JEPS112350  Genista monspessulana Dean G. Kelch and Andrew G. Murdock 2004-4-11 04 .077 Contra Costa Crockett - Crolona Heights, County: Contra Costa; Crockett: W base of Crolona heights. Comment
  JEPS121056  Genista monspessulana Dean G. Kelch and Andrew G. Murdock 2004-4-11 04 .077 Contra Costa Crockett - West base of Crolona Heights Comment
  UC692709  Geranium carolinianum Mary L. Bowerman 1935-5-25 3076 Contra Costa Rhine Canyon Mount Diablo 914 Comment
  CHSC116654  Geranium dissectum Lowell Ahart; Josephine Guardino 2016-4-19 20776 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Along the east side of the gravel road, 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 160 Comment
  JEPS111976  Geranium dissectum D. G. Kelch 2004-4-3 04 .49 Contra Costa Martinez - Vine Hill 44 Comment
  UCD103337  Geranium dissectum Morris Halperin 1929-4-21 s.n. Contra Costa Moraga Valley. Comment
  RSA0029465  Geranium purpureum Barbara Ertter 2000-5-14 17012 Contra Costa Mount Diablo Regional Park, Falls Trail at Donner Creek crossing. 488 Comment
  UC2029017  Geranium robertianum Barbara Ertter 1999-7-17 16768 Contra Costa Tilden Regional Park, trail to Jewel Lake paralleling Wildcat Creek, through thick woodland growth. Comment
  CHSC102194  Geranium rotundifolium Barbara Ertter 1996-6-4 14684 Contra Costa Tilden Regional Park in hills east of Berkeley, restoration site northeast of junction of Grizzly Peak boulevard and GolF Course Drive. Comment
  RSA67217  Gilia achilleifolia Verne Grant, Alva Grant 1948-5-2 8424 Contra Costa in Bear Creek Canyon, 0.5 miles north of summit and ca. 3.8 miles from Orinda-San Pablo road. Comment
  UC2028999  Gilia achilleifolia Barbara Ertter 2000-3-30 16918 Contra Costa North side of Mount Diablo, open rocky area ca halfway down Back Canyon Trail from Murchio Gap. Comment
  UC106854  Gilia achilleifolia subsp. achilleifolia C. F. Baker 1903-4-28 2951 Contra Costa Mt. Diablo, Mitchell Canyon Comment
  UC691669  Gilia achilleifolia subsp. achilleifolia Mary L. Bowerman 1932-5-6 1416 Contra Costa floor Mitchell Canyon; Mount Diablo, Mitchell Canyon 213 Comment
  UC908864  Gilia achilleifolia subsp. achilleifolia Herbert L. Mason 1929-3-29 5123 Contra Costa Mount Diablo 762 Comment
  UC691601  Gilia achilleifolia subsp. multicaulis Mary L. Bowerman 1935-4-17 2839 Contra Costa West Road 2 mi from entrance Mount Diablo ((= North Rd.)); , West Road 289 Comment
  UC691629  Gilia capitata subsp. capitata Mary L. Bowerman 1933-6-7 2263 Contra Costa North Peak Ridge , North Peak Ridge (Mount Diablo) Comment
  POM65956  Gilia capitata subsp. staminea Edward L. Greene 1903-4-25 2805 Contra Costa Antioch. Comment
  RSA469347  Gilia capitata subsp. staminea H. de Forest 1930-5-6 s.n. Contra Costa [Unspecified] Comment
  POM223334  Gilia clivorum L. S. Rose 1935-5-16 351 75 Contra Costa Mt. Diablo. Comment
  RSA14955  Gilia clivorum L. S. Rose 1935-5-16 351 75 Contra Costa Mt. Diablo. Comment
  UC691652  Gilia clivorum Mary L. Bowerman 1935-4-19 2857 Contra Costa West Road 3.5 mi from entrance (( = North Road), Mount Diablo); Mount Diablo, West Road (=North Road) 365 Comment
  POM300969  Gilia clivorum Mary L. Bowerman 1935-4-19 2858 Contra Costa Near Turtle Rock; Mount Diablo. 457 Comment
  UC2028156  Gilia clivorum Barbara Ertter 1998-4-4 15955 Contra Costa Shell Ridge Open Space northwest of Mount 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
  UC23867  Gilia tricolor subsp. tricolor McLean March 1875 Contra Costa Concord Comment
  SEINET10906041  Githopsis diffusa subsp. robusta Bowerman 1931-5-16 BOWERMAN 851 Contra Costa Meridian Peak summit Comment
  SEINET10464620  Githopsis specularioides Bowerman 1935-5-18 BOWERMAN 3034 Contra Costa Meridian Peak north of the summit parking area 1067 Comment
  UC1051198  Gladiolus X colvillei N. Floy Bracelin 1944-6-11 2724 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC22422  Glaux maritima Jos. Burtt Davy 1900-6-7 6665 Contra Costa near Martinez Comment
  JEPS112378  Glycyrrhiza lepidota Dean G. Kelch and Andrew G. Murdock 2003-6-2 84 Contra Costa Martinez; County: Contra Costa; Near waterfront west end entrance. Comment
  JEPS64809  Glycyrrhiza lepidota W. L. Jepson May 23 1891-May 24 1891 13599 Contra Costa Mt. Diablo Comment
  UC2013053  Glycyrrhiza lepidota Barbara Ertter with Mary Bowerman, Lisa Schultheis 1996-7-5 14920 Contra Costa Northwest base of Mount Diablo access to Foothills Regional Park from North Gate Road along Little Pine Creek. Comment
  CDA35615  Gnaphalium californicum I. Godwyn 2011-5-12 PDR# 1649778 Contra Costa Richmond; Wildcat Canyon Regional Park, near McBryde Ave. 0 Comment
  RSA721738  Gnaphalium canescens subsp. beneolens Barbara Ertter, Kristin Ertter 1995-7-11 14469 Contra Costa Pine Creek on west side of Mt. Diablo southwest of Walnut Creek; Diablo Foothills Regional Park Comment
  UC1618414  Gnaphalium palustre Barbara Ertter, Brad Olson 1991-9-28 10835 Contra Costa between Orinda and El Sobrante (at s end of San Pablo Reservoir); San Pablo Reservoir 91 Comment
  CDA31363  Gnaphalium ramosissimum D. G. Kelch 2006-8-11 6 .373 Contra Costa Carquinez Strait.; Top of Edward s Canyon. Crockett. Comment
  CAS-BOT-BC305233  Grindelia hirsutula Evelina Cannon 1895-12-25 s.n. Contra Costa Pinole Pt. 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
  JEPS25135  Grindelia hirsutula G. Thomas Robbins 1959-4-26 4003 Contra Costa s of Castro Point (just n of Richmond-San Rafael Bridge, above shore of San Francisco Bay, dry slopes of Potrero Hills); Potrero Hills, Richmond 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
  UC161985  Grindelia hirsutula Katharine Brandegee 1911-7-6 Contra Costa near rr crossing Pt. Isabel Comment
  UC615563  Grindelia hirsutula Beryl O. Schreiber 1933-10-5 940 A Contra Costa Mount Diablo Comment
  CAS-BOT-BC305230  Grindelia hirsutula John Thomas Howell 1930-9-28 5486 Contra Costa Tunnel Road near Oak Spring Comment
  CAS-BOT-BC305239  Grindelia hirsutula H. E. McMinn No date on label 138 Contra Costa Above Richmond ferry slip Comment
  CAS-BOT-BC305241  Grindelia hirsutula John Thomas Howell 1929-9-21 4396 Contra Costa Marsh Creek Road 3.5 miles sw. of Brentwood Comment
  UC117325  Guillenia flavescens T. S. Brandegee May 1892 Contra Costa Antioch Comment
  UC1736552  Guillenia flavescens Dean W. Taylor 1994-3-30 14108 Contra Costa Mt. Diablo (in Mt. Diablo State Park), 2 miles South along North Gate Road from the North Gate kiosk, 365 Comment
  POM273845  Guillenia lasiophylla Lyman Benson 1935-3-16 6284 Contra Costa 3 miles S of Antioch. Mt. Range: Mt. Diablo; Watershed: Sacramento River. 152 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
  RSA299550  Gutierrezia californica Edward Lee, Annetta Carter 1935-8-17 1622 Contra Costa Antioch Comment
  RSA455866  Gutierrezia californica E. E. Stanford 1930-9-20 2101 Contra Costa Near Walnut Creek Comment
  CAS-BOT-BC304581  Gutierrezia californica Mary L. Bowerman 1938-11-12 3729 Contra Costa Mount Diablo. Lime Ridge toward crest of hilllside north of break 152 Comment
  POM301854  Gutierrezia californica Mary L. Bowerman 1938-11-12 3729 Contra Costa Lime Ridge toward crest of hillside N of break between 2 chaparral patches. 152 Comment
  UC2070544  Gypsophila elegans Barbara Ertter with David Gowen, J. Ginochio, M. Park, S. Matson, A. Moore, S. D'Alcamo, J. Greenhouse, K. Kersh and J. Gawthrup 2005-5-8 18562 Contra Costa Moses Rock Ridge on west side of Mount Diablo; Deer Flat Road a short distance south of junction with Burma Road. Comment
  UC50509  Hainardia cylindrica Jos. Burtt Davy 1900-6-7 6653 Contra Costa Pinole Creek Valley Comment
  SEINET11849272  Haplopappus parishii C. W. Sharsmith 1933-1 474 A Contra Costa adjacent to San Pablo Bay, near Carquinez Straits Comment
  CDA5197  Hedera helix D. G. Kelch, A. G. Murdock 2005-5-23 5 .373 Contra Costa Carquinez Strait Region; Crockett - Crolona Heights. 6th Street at Lillian Street, Crockett. Comment
  UC1795862  Hedera helix Barbara Ertter 1994-10-23 13915 Contra Costa Southwest El Cerrito, north edge Breuner's parking lot, northwest of Albany Hill. Comment
  SBBG122850  Hedypnois cretica B. Ertter 1994-5-23 12809 Contra Costa end of Rydin Rd, Pt Isabel at S end of Richmond Comment
  CAS-BOT-BC306372  Helenium bigelovii Walter Knight 1979-6-15 3391 Contra Costa Browns Island. Crooked Slough Comment
  CDA6437  Helenium puberulum D. G. Kelch, A. G. Murdock 2003-8-13 3 .134 Contra Costa Carquinez Strait; Pinole Creek. Comment
  CDA23633  Helianthella castanea D. G. Kelch 2007-9-8 7 .57 Contra Costa Carquinez Strait; Pinole Valley Park. Comment
  JEPS100139  Helianthella castanea G. Smick 2003-4-1 GAS 115 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS21043  Helianthella castanea W. L. Jepson 1922-5-23 9654 Contra Costa Mt. Diablo; summit Comment
  UC194921  Helianthella castanea H. M. Hall 1916-5-31 10137 Contra Costa n slope of summit Mt. Diablo 1158 Comment
  UC194923  Helianthella castanea H. M. Hall 1916-5-31 10137 a Contra Costa exposed flat on s side Mt. Diablo Comment
  UC2031433  Helianthella castanea Barbara Ertter 1991-6-1 10074 Contra Costa Las Trampas Regional Wilderness in hills W of Danville Comment
  CAS-BOT-BC305330  Helianthella castanea L. R. Abrams 1921-5-25 8062 Contra Costa 1/2 way up road to summit Mt. Diablo Comment
  CDA31041  Helianthemum scoparium D. G. Kelch, Troy McGregor; Ed Biffin 2010-6-1 10 .229 Contra Costa Mt. Diablo. Knobcone Point Rd. Comment
  POM300646  Helianthemum scoparium var. scoparium Mary L. Bowerman 1932-4-9 1332 Contra Costa Ridge to Wall Point, from near Rock City Comment
  CDA6550  Helianthus californicus D. G. Kelch, A. G. Murdock 2004-9-2 4 .332 Contra Costa Carquinez Strait Region; Pacheco Marsh. Marsh east of Martinez and I-680 and east of lone tree Marsh. Comment
  JEPS78634  Helianthus californicus Walter Knight and Neil Havlik 1979-10-7 3416 Contra Costa between Whittell marsh and a marsh to the e part of the park,; Point Pinole Regional Shoreline Comment
  UC2070513  Helianthus californicus Barbara Ertter 2002-8-24 18034 Contra Costa Lower Perkins Canyon on NE base of Mount Diablo. Comment
  UC2027833  Helianthus gracilentus Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17632 Contra Costa Northwest flank of Mount Diablo, Ginochio property north of park boundary, upper end of Government Road on Long Ridge. Comment
  SD71038  Heliotropium amplexicaule Peter Rubtzoff 1967-9-5 5881 Contra Costa University of California campus, Berkeley, on dry hillside at the edge of Haviland Hall parking lot. Comment
  CDA1154  Heliotropium curassavicum D. G. Kelch 2004-7-9 4 .307 Contra Costa Carquinez Strait region.; Along Carquinez Scenic Drive near turn-off to Port Costa. Comment
  JEPS111836  Heliotropium curassavicum A. G. Murdock 2004-6-4 327 Contra Costa Pacheco Marsh Near shore on back of dikes 2 Comment
  UC407041  Heliotropium curassavicum Ira L. Wiggins 1930-4-18 4606 Contra Costa Jersey Isl. Comment
  CAS-BOT-BC306266  Hemizonia congesta subsp. lutescens R. F. Hoover 1969-9-1 11568 Contra Costa Between San Pablo and Pinole Comment
  UC201230  Hemizonia congesta subsp. lutescens H. M. Hall 1914-9-19 9883 Contra Costa 1 km nw of town on Broadway; San Pablo 18 Comment
  CDA33542  Hemizonia congesta subsp. luzulifolia D. G. Kelch 2010-11-28 10 .449 Contra Costa El Sobrante. Hill above the junction of San Pablo Dam Rd and El Portal Dr (Quail Hill). Comment
  CDA8366  Hemizonia congesta subsp. luzulifolia D. G. Kelch 2003-11-24 3 .341 Contra Costa Carquinez Strait; Between Bull Valley Staging Area and Port Costa. Comment
  JEPS99532  Hemizonia congesta subsp. luzulifolia Mary L. Bowerman 1993-10-17 Contra Costa Mount Diablo. Regency road. Comment
  UC1536900  Hemizonia congesta subsp. luzulifolia Gordon H. True Jr. 1937-10-12 838 Contra Costa near Pinole 30 Comment
  UC1613950  Hemizonia congesta subsp. luzulifolia Charles M. Belshaw 1935-6-24 1032 Contra Costa Sobrante Hills Comment
  UC990637  Hemizonia congesta subsp. luzulifolia James I. McMurphy 1909-9-25 Contra Costa Walnut Creek Comment
  CAS-BOT-BC314866  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1925-12-6 1612 Contra Costa Ridge between Redwood Canyon and San Leandro Canyon, Oakland Hills Comment
  CAS-BOT-BC314872  Hemizonia congesta subsp. luzulifolia D. E. Breedlove 1969-10-18 16707 Contra Costa Along the roadbank on Deer Hill Road near the junction with Happy Valley Road, Lafayette Comment
  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
  RSA121592  Hemizonia fitchii H. S. Yates 1934-9-2 4086 Contra Costa 2 miles S of Mt. Diablo. 579 Comment
  RSA103865  Hemizonia kelloggii M. K. Curran 1886-04 95 Contra Costa Antioch. Comment
  RSA81676  Hemizonia luzulifolia subsp. rudis James I. McMurphy 1909-9-24 s.n. Contra Costa San Ramon Road, above Hayward. Comment
  SEINET7883479 Image available Hemizonia obconica Lewis S. Rose 1938-1 38309 Contra Costa Marsh Creek, 8 mi. w. of Byron 61 Comment
  RSA81667  Hemizonia parryi subsp. congdonii James I. McMurphy 1909-9-24 s.n. Contra Costa San Ramon Comment
  UCR184664  Hemizonia pungens subsp. pungens Dean Kelch 2005-11-23 06 .507 Contra Costa Point Molate 5 Comment
  CDA38358  Heracleum lanatum A. G. Murdock 2004-4-3 260 Contra Costa Vaca Canyon. Comment
  JEPS75522  Heracleum lanatum P. F. Yorks 1974-5-19 160 A Contra Costa n. Briones Reservoir (ca. 1.7 km. s. of Bear Creek Rd. on Hampton Rd. in Hampton Road Natural Reserve); Hampton Road Natural Reserve 180 Comment
  UC2028417  Heracleum maximum Barbara Ertter with John Ginochio and Mary Bowerman 2001-5-8 17634 Contra Costa Northwest flank of Mount Diablo, headwaters of Arroyo del Cerro between Olofson Ridge and Long Ridge Comment
  UCD127539  Heracleum maximum R. Tofsrud 1948-1 s.n. Contra Costa Exact location unknonw. Comment
  CAS-BOT-BC310195  Hesperevax sparsiflora var. sparsiflora Mary L. Bowerman 1931-4-11 688 Contra Costa Mount Diablo. Pine Canyon 121 Comment
  JEPS12781  Hesperevax sparsiflora var. sparsiflora Rimo Bacigalupi with G. T. Robbins 1955-5-4 4974 Contra Costa pasture near summit Kirker Pass (along old road (not summit of new freeway bypass)) 274 Comment
  UC88275  Hesperevax sparsiflora var. sparsiflora M. K. Curran May 1886 Contra Costa Antioch Comment
  CDA18901  Hesperis matronalis V. Guise 2000-5-22 PDR 031723 Contra Costa on the east side of Tassajara Rd., Danville. 0 Comment
  UC1818919  Hesperocnide tenella Barbara Ertter, Mary Bowerman et al. 1995-5-7 14054 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
  CAS-BOT-BC167427  Hesperolinon breweri T. S. Brandegee 1884-5-1 s.n. Contra Costa Near Antioch Comment
  JEPS122860  Hesperolinon breweri Adam C. Schneider with C. Matt Guilliams 2014-5-29 557 Contra Costa Mt. Diablo State Park. Trail to Murchio Gap. Comment
  UC692702  Hesperolinon breweri Mary L. Bowerman 1930-6-22 356 Contra Costa Mitchell Canyon Mount Diablo Comment
  CAS-BOT-BC167434  Hesperolinon breweri Mrs. K. Brandegee 1907-6-16 s.n. Contra Costa Hills between Antioch and Marsh Creek, on the easterly side of Mt. Diablo Comment
  UC697193  Hesperolinon californicum Mary L. Bowerman 1935-6-28 3160 Contra Costa Inner Black Hills just w meridian; Mount Diablo 457 Comment
  CAS-BOT-BC175986  Hesperolinon californicum Mary L. Bowerman 1935-6-28 3160 Contra Costa Inner Black Hills near canyon bottom (opposite old government trail to Chase Pond). Mount Diablo 457 Comment
  POM139233  Hesperolinon micranthum A. D. E. Elmer 1903-07 4545 Contra Costa Mount Diablo Comment
  UC187375  Hesperomecon linearis C. F. Baker 1903-4-25 2802 Contra Costa Antioch Comment
  UC35090  Hesperomecon linearis W. C. Blasdale 1893-5-13 Contra Costa Antioch Comment
  CAS-BOT-BC422500  Hesperomecon linearis Walter Knight; Irja Knight 1977-6-13 s.n. Contra Costa Antioch sand dunes, Little Corral site, Wilber Avenue. Comment
  CAS-BOT-BC422503  Hesperomecon linearis W. R. Ernst 1958-3-26 214 Contra Costa Betw. Antioch & Antioch bridge. Comment
  SEINET10460684  Heterocodon rariflorum Bowerman BOWERMAN 3133 Contra Costa MT DIABLO 2100 Comment
  UC186817  Heterodraba unilateralis F. T. Bioletti 1892-1 Contra Costa Byron Comment
  CDA21567  Heteromeles arbutifolia D. G. Kelch, Mike Park 2008-9-1 8 .3 Contra Costa Carquinez Strait; Lonetree Point. Rodeo Shoreline Park. Rodeo. Comment
  CDA981  Heteromeles arbutifolia D. G. Kelch 2006-6-23 06 .322-C Contra Costa Carquinez Strait; West Valona. West of the Zampa Bridge above San Pablo Ave. Along small stream draining north into the Western end of the Carquinez Strait. Comment
  CAS-BOT-BC143643  Heteromeles arbutifolia W. W. Carruth 1900-6-1 s.n. Contra Costa E. Oakland Hills Comment
  SEINET11915755  Heteromeles arbutifolia M. T. Doutt 1930-1 87 Contra Costa Marsh Creek Comment
  JEPS79318  Heterotheca sessiliflora subsp. echioides Edward Lee with Annetta Carter 1935-8-17 1624 Contra Costa Antioch; sand-dunes Comment
  UC692351  Heuchera micrantha var. erubescens Mary L. Bowerman 1931-4-18 718 Contra Costa Sycamore Canyon 335 Comment
  UC2012988  Hirschfeldia incana Barbara Ertter with Tony Morosco 1996-7-27 15041 Contra Costa Mount Diablo State Park, Cardinet Oaks Road at crossing of Donner Creek. Comment
  JEPS129820  Holcus lanatus Dean G. Kelch and Andrew G. Murdock 2005-6-24 05 .386 Contra Costa Crockett - 5th St. Prairie. Comment
  CDA23596  Holocarpha heermannii D. G. Kelch 2007-10-6 7 .63 Contra Costa Carquinez Strait; Fernandez Ranch. Muir Land Trust Property 4.5 km W of Rodeo. Comment
  CDA8362  Holocarpha heermannii D. G. Kelch, A. G. Murdock, M. K. Herzenach 2004-9-2 4 .329 Contra Costa Carquinez Strait; Near Summit of Mckewan Rd between Port Costa and I-4. Comment
  POM299470  Holocarpha heermannii L. S. Rose 1941-10-13 41465 Contra Costa 1 miles E of Walnut Creek. 50 Comment
  RSA128986  Holocarpha heermannii Peter H. Raven 1950-7-5 2484 Contra Costa Deer Ridge, Mt. Diablo. 884 Comment
  UC691478  Holocarpha heermannii Mary L. Bowerman 1931-9-12 1039 Contra Costa 838 Comment
  JEPS75032  Holocarpha macradenia David J. Powers 1974-10-6 1001 Contra Costa 100-300 ft e Hwy 80 (100-300 yd s Appian Way); Pinole Comment
Read comments Jul 23 2013
  CAS-BOT-BC320224  Holocarpha macradenia Irja Knight 1979-5-3 3375 Contra Costa In Pinole in a pasture on s.e. corner of Appian Way and I-80 Comment
  RSA0008457  Holocarpha macradenia David Powers 1974-10-6 1001 Contra Costa Pinole, 100-300 feet east of Hwy 80 and 100-300 yards south of Appian Way Comment
  CAS-BOT-BC320246  Holocarpha obconica L. S. Rose 1941-10-16 41466 Contra Costa 6 miles west of Byron, on the Marsh Creek Road 33 Comment
  CAS-BOT-BC320251  Holocarpha obconica H. M. Hall 1930-9-24 12846 Contra Costa Vasco Road at Junction 4 miles west of Byron Comment
  UC2029032  Holocarpha obconica Barbara Ertter 2002-11-11 18072 Contra Costa Round Valley Regional Preserve east of Mount Diablo, along Round Valley Creek/Miwok Trail Comment
  SEINET7545173  Holocarpha obconica subsp. autumnalis D. D. Keck, J. Clausen 1933-1 2567 Contra Costa 1.6 mi.W. of Byron, 1.4 mi. from jct with Vasco Rd. Comment
  CAS-BOT-BC320324  Holocarpha virgata L. S. Rose 1941-10-16 41467 Contra Costa 2 miles west of Byron 33 Comment
  CAS-BOT-BC320332  Holocarpha virgata F. R. Lawson 1930-7-18 s.n. Contra Costa 2.4 mi. west of Concord Comment
  CAS-BOT-BC324613  Holocarpha virgata David D. Keck 1933-11-2 2624 Contra Costa 5 miles east of Clayton on Marsh Creek Road just opposite Mt. Diablo Comment
  CAS-BOT-BC324619  Holocarpha virgata John Thomas Howell 1929-9-21 4389 Contra Costa 5 miles southeast of Clayton on Marsh Creek Road Comment
  JEPS112080  Holodiscus discolor D. G. Kelch 2003-8-13 03 .125 Contra Costa Vaca Canyon 165 Comment
  UC691112  Holodiscus discolor Mary L. Bowerman 1930-6-26 376 b Contra Costa Clayton-Livermore Road s of Riggs Canyon Road (Mount Diablo); , Clayton-Livermore Road Comment
  CAS-BOT-BC152591  Holodiscus discolor var. discolor Mary L. Bowerman 1935-6-15 3130 Contra Costa Ridge running north from Mitchell, Pine divide at 3100 foot level - Mount Diablo 838 Comment
  CAS-BOT-BC281255  Hordeum brachyantherum subsp. brachyantherum R. E. Frenkel 1964-4-29 461 Contra Costa 0.2 mile west of Bixler Road on Balfour Road 6 Comment
  POM181466  Hordeum depressum I. L. Wiggins 1930-4-17 4578 Contra Costa 1/4 mi. S. of Byron Comment
  UC50655  Hordeum depressum Jos. Burtt Davy May 1898 Contra Costa Danville Comment
  SEINET11678332  Hordeum depressum I. L. Wiggins 1930-1 4569 Contra Costa 2 mi E of Mountain House on road to Byron Comment
  UC55039  Hordeum marinum subsp. gussoneanum Jos. Burtt Davy 1898-4-8 4253 Contra Costa Danville Comment
  UCD85893  Hordeum marinum subsp. gussoneanum L. S. Smith 1916-5-10 s.n. Contra Costa San Pablo. Grand View Terrace. Comment
  SEINET10595762  Hordeum murinum Ball 1975-3-2 BALL 456 Contra Costa In area #4. On beach ca. 30 yds. S of dam on E side of lake. Accompanying species include Bromus rigidus, etc. Soil sandy clay. 32 Comment
  UC691183  Hordeum murinum subsp. glaucum Mary L. Bowerman 1933-5-25 2188 Contra Costa w end s face Oyster Ridge (Mount Diablo); , w end s face Oyster Ridge 396 Comment
  CAS-BOT-BC532052  Horkelia californica var. frondosa Joseph Andorfer Ewan 1934-5-20 8926 Contra Costa Russelmann Park, n. side Mt. Diablo Comment
  UCD106066  Hosackia crassifolia P. B. Kennedy 1916-5-21 s.n. Contra Costa Between Diablo and Summit. Comment
  CAS-BOT-BC206139  Hosackia crassifolia Rimo Bacigalupi 1926-4-30 1350 Contra Costa Summit of Mt. Diablo Comment
  UC1619916  Hydrocotyle verticillata Barbara Ertter, B. Olson, D. Lake, L. Hosley, and A. Youngson 1991-10-20 10863 Contra Costa just w. Antioch marina (along levee at water's edge, accessed from marina, Dow Wetlands Preserve); Dow Wetlands Preserve Comment
  JEPS1644  Hydrophyllum occidentale Mary L. Bowerman 1930-6-10 311 Contra Costa Meridian Peak summit; Mount Diablo Comment
  CAS-BOT-BC401301  Hypericum scouleri L. R. Abrams 1910-10-8 4347 Contra Costa Mt Diablo 914 Comment
  UC2028113  Hypochaeris glabra Barbara Ertter with Christopher Baysdorfer 1998-5-10 16108 Contra Costa Lime Ridge Open Space northwest of Mount Diablo, roadside not far from Valley Vista trailhead. Comment
  CAS-BOT-BC311408  Hypochaeris radicata R. E. Frenkel 1964-2-22 359 Contra Costa On Giant Road, 0.4 mile north of ATSF RR crossing, Richmond 15 Comment
  CAS-BOT-BC133498  Iris Walter Knight; Joanne Dean 1978-8-14 3152 Contra Costa Browns Island Comment
  CDA9507  Iris pseudacorus D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .234 Contra Costa CA Delta; Along Clifton Court Near Clifton Court Forebay. Comment
  UC2070455  Iris pseudacorus Barbara Ertter with Dorothy Frantz 2001-5-10 17639 Contra Costa Diablo Foothill Regional Park, Pine Creek just south of Castle Rock Recreation Area. Comment
  CAS-BOT-BC324752  Iva axillaris Evelina Cannon 1896-5-22 s.n. Contra Costa Giant Station Comment
  JEPS111671  Iva axillaris D. G. Kelch 2003-3-28 03 .84 Contra Costa Rodeo - Lone Tree Point 2 Comment
  UCD133390  Iva axillaris M. Wiesendanger 1926-6-26 1566 Contra Costa Richmond. Comment
  JEPS100045  Juglans californica var. hindsii G. Smick 2003-5-13 GAS 192 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS58698  Juglans californica var. hindsii W. L. Jepson 1908-8-16 3087 Contra Costa Walnut Creek Comment
  UC1197942  Juglans californica var. hindsii Joseph P. Tracy 1934-4-30 13186 Contra Costa near Lafayette; North Coast Ranges 152 Comment
  UC1205990  Juglans californica var. hindsii Joseph P. Tracy 1933-12-1 13130 Contra Costa along creek between Lafayette and Moraga Comment
  JEPS112453  Juncus balticus D. G. Kelch 2005-3-25 05 .73 Contra Costa Hercules - Carbon Carbon Road near Route 4. 50 Comment
  UC2028165  Juncus bufonius var. bufonius Barbara Ertter 1998-5-3 16078 a Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  CHSC116625  Juncus bufonius var. congestus Lowell Ahart; Josephine Guardino 2016-4-19 20786 Contra Costa Below the high water line of Los Vaqueros Reservoir, 1.4 miles northwest of Los Vaqueros Reservoir Mrina, 1.9 miles (air)southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. 144 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
  JEPS108161  Juncus capitatus David Gowen 2005-6-4 403 Contra Costa Lime Ridge Open Space. Northeast corner of the park, just west of water tank.Growing in hard-packed eroded sandy area. Comment
  CDA2696  Juncus gerardi Barbara Ertter, S. Matson 2003-5-31 18175 Contra Costa Carquinez Strait; Martinez Regional Shoreline along Pickleweed Trail west of Arch Bridge. 0 Comment
  CDA15268  Juncus mexicanus G. F. Hrusa, D. Crowe 1998-5-8 14399 Contra Costa Sacramento Delta; Drainage ditch parallel to Antioch-Pittsburg Hwy, at E end of Dow Chemical property. Comment
  UC2028371  Juncus phaeocephalus var. paniculatus Barbara Ertter 1998-6-20 16236 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, Alkali Pond at Wiget Lane entrance, Comment
  JEPS111079  Juncus phaeocephalus var. phaeocephalus 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
  JEPS112456  Juncus tenuis D. G. Kelch 2005-3-24 05 .50 Contra Costa Pt. Pinole near wharf 2 Comment
  SEINET10531625  Juniperus californica Lewis S. Rose 1936-11-22 Rose 36781 Contra Costa Mt. Diablo. Dry slopes. 760 Comment
  SEINET10531634  Juniperus californica Lewis S. Rose 1941-3-22 Rose 41052 Contra Costa Mt. Diablo, west slope. 915 Comment
  JEPS55998  Keckiella corymbosa L. R. Heckard and R. Bacigalupi 1968-6-27 Contra Costa Bald Ridge Mt. Diablo (along trail to Eagle Peak, ne of Deer Flat) 670 Comment
  JEPS70570  Koeleria macrantha W. L. Jepson 1918-6-5 7601 Contra Costa Donner Canyon Mt. Diablo; vicinity of San Francisco Bay, Mt. Diablo 533 Comment
  SEINET186056 Image available Koeleria macrantha V. E. Long 1933-6-14 223 a Contra Costa Mt. Diablo 457 Comment
  CAS-BOT-BC273614  Koeleria pyramidata Mary L. Bowerman 1933-5-2 1962 Contra Costa Mount Diablo. Below Pioneer Camp 762 Comment
  UC1050315  Kolkwitzia amabilis N. Floy Bracelin 1943-7-4 1584 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS100181  Lactuca serriola A. Langston 2003-8-26 AL 85 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC340697  Lactuca virosa John Thomas Howell 1942-6-28 17004 Contra Costa Oakland Hills near Redwood Peak 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
  JEPS111661  Lagophylla ramosissima A. G. Murdock 2004-5-28 270 Contra Costa Pinole Peak 205 Comment
  UC697161  Lagophylla ramosissima Mary L. Bowerman 1930-6-5 262 Contra Costa North Road 5.8 mi from North Gate; Mount Diablo 457 Comment
  UC2043144  Lamium amplexicaule Barbara Ertter with David Gowen 2015-2-22 22228 Contra Costa Green Ranch area on Mount Diablo SE of summit, between Green Ranch Road and Alder Creek. Comment
  JEPS105733  Lastarriaea coriacea David Gowen 2004-5-1 56 Contra Costa Lime Ridge Open Space. Ridge trail in the north section of the park and south of the water tank. Comment
  CAS-BOT-BC337977  Lasthenia californica W. H. Brewer 1862-5-19 1120 Contra Costa North of Kirker's Pass Comment
  CHSC23361  Lasthenia californica Willis Ball 1975-4-19 523 Contra Costa Contra Loma Regional Park. In area #1. Ca. 150 yds sw of main parking lot at the s end of the lake. 38 Comment
  UC135346  Lasthenia californica subsp. californica C. F. Baker 1903-4-28 2829 Contra Costa Marsh Creek Mt. Diablo Comment
  UC1728009  Lasthenia conjugens R. Ornduff 1998-5-10 10186 Contra Costa pasture on N side of Hwy 4 and e of I-80 Comment
  CAS-BOT-BC324481  Lasthenia ferrisiae Alice Eastwood 1914-3-14 3761 Contra Costa Byron Springs Comment
  RSA537664  Lasthenia ferrisiae Barbara Ertter, Jokerst, D. Magney 1989-4-5 8124 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  CAS-BOT-BC353332  Lasthenia fremontii Peter H. Raven; H. L. Mason; et al. 1957-4-4 10587 Contra Costa Vernal flats 3 miles S of Byron. Comment
  RSA516575  Lasthenia fremontii R. C. Bacigalupi, G. Thomas Robbins 1956-3-26 5533 Contra Costa About 2.5 miles S of Byron, just S of S.P.R.R. crossing on road to Bethany. Near head of Italian Slough. 6 Comment
  UCR197915  Lasthenia glaberrima Beecher Crampton 1950-5-10 573 Contra Costa 1 mile north of Richmond, along Santa Fe Railroad tracks 11 Comment
  POM301039  Lasthenia glaberrima Mary L. Bowerman 1935-6-21 3153 Contra Costa Mount Diablo: South of Turtle Rock, pool east of main pond Comment
  JEPS35405  Lasthenia glabrata subsp. glabrata W. L. Jepson 1925-4-26 10686 Contra Costa Black Hills Mt. Diablo, Black Hills Comment
  CAS-BOT-BC352802  Lasthenia glabrata subsp. glabrata Dr. A. Kellogg 1887-1-1 s.n. Contra Costa Mount Diablo: Mitchell-Pine divide, northernmost 2750 ft. point 838 Comment
  UC566714  Lasthenia gracilis H. L. Mason 1929-3-31 5154 Contra Costa along San Joaquin River; , Antioch Comment
  JEPS68977  Lasthenia minor Edward Lee 1935-3-29 1312 Contra Costa Donovan Rd e Kirker Pass (edges of eroded gullies); West watershed of Kirker Creek Comment
  POM181471  Lasthenia minor I. L. Wiggins 1930-4-17 4556 Contra Costa 1 mile E of Mountain House on road to Byron Comment
  CAS-BOT-BC213351  Lathyrus jepsonii subsp. californicus Volney Rattan 1887-5-22 s.n. Contra Costa Alhambra Valley Comment
  RSA138191  Lathyrus jepsonii subsp. californicus Volney Rattan 1887-5-22 s.n. Contra Costa Alhambra Valley. Comment
  JEPS89027  Lathyrus jepsonii var. californicus Volney Rattan 1887-5-22 Contra Costa Alhambra Valley Comment
  UCD130164  Lathyrus jepsonii var. jepsonii Stephen P. Rae 1978-9-5 s.n. Contra Costa Browns Island. In Sacramento River near Pittsburg (in known location). 2 Comment
  UC1795739  Lathyrus latifolius Barbara Ertter, Diane Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14671 Contra Costa Point Molate Naval Fuel Depot north of San Rafael bridge, edge of San Francisco Bay; edge of coastal bluff and blacktop at northwest corner of area. Comment
  UC764680  Lathyrus vestitus R. F. Hoover 1941-4-12 4844 Contra Costa w branch of San Pablo Creek San Pablo Creek Comment
  UCD106487  Lathyrus vestitus P. B. Kennedy 1925-4-26 s.n. Contra Costa Banks above road to Sycamore Canon, Mt. Diablo. Comment
  JEPS99994  Lathyrus vestitus var. vestitus G. Smick 2003-3-13 GAS 70 Contra Costa Mt. Wanda, Martinez, John Muir National Historic Site. Comment
  UC692407  Lathyrus vestitus var. vestitus Mary L. Bowerman 1930-6-5 257 Contra Costa 5.8 mi by road from North Gate (North Road); Mount Diablo 457 Comment
  UC1819260  Lathyrus vestitus var. vestitus Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12332 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, southeast side of hill, with dense patches of Wyethia angustifolia. 30 Comment
  JEPS13446  Layia chrysanthemoides R. F. Hoover 1939-4-25 4065 Contra Costa Richmond Hills Comment
  UC912574  Layia chrysanthemoides Herbert L. Mason 1929-3-31 5151 Contra Costa Sacramento River at Antioch; Sacramento River Comment
  CAS-BOT-BC323928  Layia chrysanthemoides Alice Eastwood; John Thomas Howell 1935-4-7 2119 Contra Costa Near Byron Comment
  POM181462  Layia chrysanthemoides I. L. Wiggins 1930-4-17 4572 Contra Costa 1/4 mi. S. of Byron. Comment
  UC2042770  Layia gaillardioides Barbara Ertter with Chris Thayer 1993-5-7 11706 Contra Costa Ca 1/2 mile north of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land east of Tilden Park. Comment
  CAS-BOT-BC321082  Layia glandulosa C. F. Baker 1909-5-20 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC327243  Layia hieracioides Mrs. Brandegee 1883-5-1 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC327249  Layia hieracioides David D. Keck 1941-6-5 5307 Contra Costa Berkeley Hills, Fish Creek Rd., 0.25 mi W of E. portal of Broadway Tunnel 335 Comment
  CAS-BOT-BC370665  Layia platyglossa Alice Eastwood 1915-5-30 s.n. Contra Costa Mt. Diablo Comment
  CAS-BOT-BC377907  Layia platyglossa Lewis S. Rose 1933-4-17 33093 Contra Costa Antioch Comment
  CAS-BOT-BC377910  Layia platyglossa James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC370668  Layia platyglossa Mary L. Bowerman 1931-4-19 737 Contra Costa Mount Diablo. Ridge south of Deer Flat. 838 Comment
  CAS-BOT-BC377913  Layia platyglossa Kellogg; Brannan 1880-4-23 s.n. Contra Costa Antioch Comment
  SEINET10759869  Layia platyglossa John T. Middleton 1936-4-18 Middleton 143 Contra Costa Deer Valley, Ca. Comment
  UC692107  Lemna minuscula Mary L. Bowerman 1933-11-4 2459 Contra Costa Alder Springs, (most easterly of the springs) Alder Springs; Mount Diablo, Alder Springs 487 Comment
  POM181451  Lemna minuta I. L. Wiggins 1930-4-18 4607 Contra Costa Jersey Island. Comment
  CAS-BOT-BC534639  Lemna minuta Ira L. Wiggins 1930-4-18 4607 Contra Costa Jersey Island Comment
  CAS-BOT-BC88704  Lepidium acutidens Volney Rattan 1879-1-1 s.n. Contra Costa Antioch. Comment
  CAS-BOT-BC88680  Lepidium acutidens Lewis S. Rose 1956-3-19 56003 Contra Costa 2 miles southeast of Byron. 7 Comment
  CDA37473  Lepidium campestre V. Guise 2012-5-1 PDR# 1649640 Contra Costa Near Old School Road, Tassajara; east of Danville. 0 Comment
  UC2070552  Lepidium coronopus Barbara Ertter 2002-5-11 17839 Contra Costa Southwest base of Mount Diablo, base of Emmons Canyon fire road. Comment
  JEPS53610  Lepidium dictyotum J. Burtt Davy May 1898 Contra Costa Byron Springs Mount Diablo Region Comment
  CHSC67912  Lepidium dictyotum var. acutidens James D. Jokerst 1989-3-29 3074 Contra Costa Byron Hot Springs area NE of Livermore, adjacent to pipeline on terrace S of ephemeral creek. Comment
  JEPS21344  Lepidium dictyotum var. acutidens J. Burtt Davy May 1898 Contra Costa Danville Mount Diablo Region Comment
  JEPS21356  Lepidium dictyotum var. acutidens J. Burtt Davy May 1898 Contra Costa Livermore Valley Mount Diablo Region Comment
  UC856365  Lepidium dictyotum var. acutidens Lewis S. Rose 1937-3-26 37012 Contra Costa Byron 7 Comment
  CDA24908  Lepidium dictyotum var. dictyotum Jim Jokerst 1989-3-29 3073 Contra Costa Byron Hot Springs area northeast of Livermore, adjacent to pipeline on terrace south of ephemeral creek. 0 Comment
  POM181449  Lepidium didymum I. L. Wiggins 1930-4-18 4595 Contra Costa East end of Jersey Island. 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
  UC765053  Lepidium nitidum R. F. Hoover 1938-2-27 2786 Contra Costa Danville Comment
  JEPS99536  Lepidium strictum Mary L. Bowerman 1995-5-28 Contra Costa Mount Diablo, fire road from Macedo Ranch to Wall Pt. Ridge. Comment
  UCR152069  Leptochloa uninervia Beecher Crampton 1959-10-19 5467 Contra Costa 4 mi south of Brentwood, along Vasco Road, just N of its junction with Mount Diablo Road 40 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
  UCD102370  Leptosiphon androsaceus Daniel Sanchez-Mata; M. P. Rodriguez-Rojo 2002-4-24 s.n. Contra Costa Mount Diablo State Park. Burma Road at Mount Diablo. 470 Comment
  UC2027726  Leptosiphon bicolor Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15506 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2027727  Leptosiphon bicolor Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15507 a Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  POM65854  Leptosiphon liniflorus C. F. Baker 1903-4-27 2864 Contra Costa Byron. Comment
  RSA114063  Leptosiphon liniflorus H. L. Mason 1952-4-14 14265 Contra Costa 3.5 miles S of Byron Comment
  RSA167170  Leptosiphon liniflorus J. M. Tucker 1963-4-12 3686 Contra Costa On west side of Holey Road, 3 miles southeast of Byron. Comment
  UCD118881  Leptosiphon liniflorus J. M. Tucker 1963-4-12 3686 Contra Costa on west side of Holey Road, 3 miles southeast of Byron. Comment
  CAS-BOT-BC324113  Lessingia glandulifera var. glandulifera James McMurphy 1908-10-18 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC324119  Lessingia glandulifera var. glandulifera T. S. Brandegee 1883-1-1 s.n. Contra Costa Antioch Comment
  UC221462  Lessingia pectinata var. tenuipes Dr. Edward Palmer Aug 17 1892-Aug 20 1892 2678 Contra Costa Byron Hot Springs Comment
  JEPS43213  Lewisia rediviva W. L. Jepson 1907-4-26 2640 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC283733  Leymus condensatus W. A. Silveus 1938-7-5 3215 Contra Costa El Cerrito Comment
  CAS-BOT-BC272216  Leymus triticoides Walter Knight 1978-8-27 3188 Contra Costa Contra Loma Regional Park 30 Comment
  CDA31464  Leymus triticoides D. G. Kelch 2009-5-24 9 .304 Contra Costa Carquinez Strait; S of Ozol, W/SW of Martinez. Comment
  RSA108330  Leymus triticoides Frank W. Gould 1941-5-16 1298 Contra Costa In roadside ditch, 1/2 mile east of Lafayette on C.S. Highway 24. Comment
Read comments Nov 1 2011
  RSA108362  Leymus triticoides Frank W. Gould 1941-5-6 1286 Contra Costa 2.3 miles from Walnut Creek on Danville road. Comment
  SEINET3840826  Leymus triticoides Unknown 2006-6-23 6 .321 Contra Costa West Valona, West of the Zampa Bridge above San Pablo avenue, along a small stream draining north into the Western end of the Carquinez Strait 91 Comment
  JEPS111551  Ligustrum lucidum D. G. Kelch 2005-5-13 05 .234 Contra Costa Martinez Martinez. South of oil refinery along Railroad tracks in fragment of habitat 28 Comment
  RSA0029782  Lilaea scilloides Barbara Ertter, Alan Prather 2003-6-7 18191 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo, pond NE of main trailhead. Comment
  JEPS19593  Limnanthes douglasii H. M. Evans Apr. 1901 Contra Costa Mt. Diablo Comment
  UC1192285  Limnanthes douglasii subsp. rosea Helen K. Sharsmith 1951-3-18 1911 Contra Costa ca 1.5 mi s Byron Comment
  UC971837  Limnanthes douglasii subsp. rosea Annetta Carter 1947-3-25 1782 Contra Costa vernal pool 3.3 mi s Byron 7 Comment
  RSA756697  Limnanthes douglasii subsp. rosea Barbara Ertter, Jim Jokerst, Dave Magney 1989-4-5 8115 Contra Costa Alkali sink W and adjacent to Clifton Court Forebay, ca 15 air miles SW of Stockton 0 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
  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
  UC30176  Linanthus androsaceus W. H. Brewer 1862-5-22 1139 Contra Costa foothills e Mount Diablo Comment
  SEINET12279041  Linanthus bicolor H. M. Hall 1901-1 1723 Contra Costa Region of San Francisco Bay, Mt. Diablo 411 Comment
  UC691638  Linanthus pygmaeus subsp. continentalis Mary L. Bowerman 1933-5-25 2178 Contra Costa w end of s-face Oyster Ridge 396 Comment
  JEPS116789  Linanthus pygmaeus subsp. continentalis David Gowen 2006-6-14 611 Contra Costa Morgan Territory Regional Park; At the NW end of Eagle Trail. Comment
  JEPS116915  Linanthus pygmaeus subsp. continentalis David Gowen 2009-4-4 981 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
  JEPS112264  Lithophragma affine D. G. Kelch 2004-3-12 04 .024 Contra Costa Pinole Valley; hillside and canyon above Wright Road. Off of Pinole Valley Road. Comment
  UC402491  Lithophragma affine J. Burtt Davy 1895-4-7 922 Contra Costa foothills, Antioch Comment
  UC402493  Lithophragma affine Chestnut and Drew 1889-4-16 Contra Costa Martinez Comment
  UC114988  Lithophragma bolanderi T. S. Brandegee Apr 1889 Contra Costa Comment
  UC1300838  Lithophragma heterophyllum Helen K. Sharsmith 1963-3-3 5193 Contra Costa near Moraga (Las Trampas Canyon E of St. Mary's College) 259 Comment
  UC2029036  Lithophragma heterophyllum Barbara Ertter 2000-3-30 16906 Contra Costa North side of Mount Diablo, Mitchell Canyon Road west of base of switchbacks. Comment
  UC2031413  Lobularia maritima Barbara Ertter with David Gowen 2006-4-14 18666 Contra Costa Lime Ridge Open Space (City of Concord) at NW foot of Mt Diablo, grassland along Ohlone Trail SE of Ygnacio Valley Road Comment
  CAS-BOT-BC342121  Logfia filaginoides Alice Eastwood 1923-5-4 11724 Contra Costa Mt Diablo Comment
  UC2028310  Logfia filaginoides Barbara Ertter, Susan D'Alcamo 1998-6-12 16167 Contra Costa North Peak Trail from Devil's Elbow on SE side of Mount Diablo summit. Comment
  JEPS97558  Lolium multiflorum R. D. Stone 1980-7-13 278 Contra Costa 'Huckleberry Trail Oakland Hills, near Alameda-Contra Costa county line (NE of intersection of Skyline Blvd. and Snake Rd) Comment
  UC69727  Lolium multiflorum Mary L. Bowerman 1933-5-25 2199 Contra Costa Mount Diablo; Mount Diablo; Mount Diablo, Alamo Canyon; Alamo Canyon; Mount Diablo, above Wilson's barn Comment
  SEINET2074966  Lolium multiflorum S. J. Gibbs 1970-3-27 Contra Costa Oak View Terrace, 3 mi. N.E. of P.O. 121 Comment
  UC1948973  Lolium perenne William J. Ferlatte, L. Maynard Moe 1970-4-27 1248 Contra Costa San Francisco Bay: Red Rock Island Comment
  CAS-BOT-BC269051  Lolium perenne Mary L. Bowerman 1935-5-3 2967 Contra Costa Mount Diablo. Sloan Road 487 Comment
  POM300593  Lolium temulentum Mary L. Bowerman 1933-5-17 2096 Contra Costa Branch of Curry Canyon due south of Olafsons' barn. Comment
  UC692428  Lolium temulentum Mary L. Bowerman 1933-5-17 2096 Contra Costa branch of Curry Canyon due s of Olafson's barn Mount Diablo; , branch of Curry Canyon Comment
  SEINET10870161  Lomatium caruifolium John T. Middleton 1936-4-18 Middleton 145 Contra Costa Comment
  UC21195  Lomatium caruifolium var. caruifolium W. H. Brewer 1862-5-20 1128 Contra Costa hill n. of coal mines on n. side of Mt. Diablo Comment
  JEPS17127  Lomatium dasycarpum subsp. dasycarpum W. L. Jepson May 23-24 1891 14299 Contra Costa Mt. Diablo Comment
  JEPS17143  Lomatium dasycarpum subsp. dasycarpum W. L. Jepson 1918-6-3 7579 Contra Costa Donner Canyon Mt. Diablo Comment
  UC1084396  Lomatium dasycarpum subsp. dasycarpum G. Thomas Robbins 1937-4-17 137 Contra Costa near Point Richmond Comment
  UC763127  Lomatium dasycarpum subsp. dasycarpum R. F. Hoover 1939-4-13 4017 Contra Costa Markley Canyon, head of W branch Comment
  UC691771  Lomatium macrocarpum Mary L. Bowerman 1935-5-1 2945 Contra Costa w. rd. 4.4 mi. from entrance Mt. Diablo 381 Comment
  UC691773  Lomatium macrocarpum Mary L. Bowerman 1930-6-28 406 Contra Costa summit Mt. Diablo Comment
  POM132672  Lomatium nudicaule A. D. E. Elmer 1903-05 4322 Contra Costa Mount Diablo Comment
  UC692363  Lomatium nudicaule Mary L. Bowerman 1935-6-15 3127 Contra Costa Mt. Diablo, Mitchell-Pine divide, also large grassy ridge running n. Mt. Diablo, Mitchell-Pine divide 609 Comment
  CAS-BOT-BC240417  Lonicera hispidula John Thomas Howell 1925-10-11 1489 Contra Costa Moraga Ridge, Oakland Hills Comment
  CDA42380  Lonicera hispidula D. G. Kelch 2012-5-27 12 .071 Contra Costa Carquinez Strait Region; Pinole Valley Park. Comment
  JEPS12831  Lonicera hispidula var. vacillans W. L. Jepson 1923-6-10 9988 Contra Costa head of Marsh Creek (Mt. Diablo); Mt. Diablo Comment
  UC1050675  Lonicera pileata f. yunnanensis N. Floy Bracelin 1941-4-20 1183 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC691483  Lonicera subspicata var. denudata Mary L. Bowerman 1932-10-16 1634 Contra Costa ridge e Median Ridge; Mount Diablo, Donner Canyon basin 487 Comment
  CHSC75087  Lotus corniculatus Roger Thom 1987-6-1 27 Contra Costa California State University Hayward's Contra Costa Campus. 3100 Oak Park Blvd. Pleasant Hill. 30 Comment
  UC692271  Lotus crassifolius var. crassifolius Mary L. Bowerman 1930-6-10 312 Contra Costa Meridian Peak summit Mount Diablo Comment
  RSA138287  Lotus heermannii Volney Rattan 1879 Contra Costa Antioch Comment
  UC692538  Lotus scoparius Mary L. Bowerman 1932-9-24 1589 Contra Costa ridge running w from Twin Peaks; Mount Diablo 335 Comment
  UC33560  Lotus strigosus Chesnut and Drew 1889-4-18 Contra Costa Antioch Comment
  JEPS55832  Lotus wrangelianus W. L. Jepson 1922-5-11 9636 Contra Costa North Berkeley Hills Comment
  JEPS55837  Lotus wrangelianus W. L. Jepson May 22 1891-May 23 1891 13796 Contra Costa Mt. Diablo Comment
  RSA498728  Lotus wrangelianus H. de Forest 1930-3-28 s.n. Contra Costa Mt. Diablo Comment
  UC15709  Lotus wrangelianus State Survey 1800-1 1166 Contra Costa Mt. Diablo Comment
  UC555420  Lotus wrangelianus H. L. Mason 1929-5-7 5263 Contra Costa Moraga Ridge Comment
  UC692323  Lotus wrangelianus Mary L. Bowerman 1932-4-9 1320 Contra Costa on large spur which heads into Sycamore Canyon; Mount Diablo, Inner Black Hills Comment
  JEPS100069  Lotus wrangelianus G. Smick GAS 74 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC478075  Ludwigia Walter Knight 1978-9-28 3277 Contra Costa Browns Island, Botany Cove Comment
  UC15760  Lupinus affinis unknown 996 Contra Costa Martinez 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
  SEINET11071663 Image available Lupinus albifrons Lewis S. Rose 1935-5-16 35162 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC201366  Lupinus albifrons var. albifrons Alice Eastwood; John Thomas Howell 1936-4-19 2146 Contra Costa Antioch Comment
  CAS-BOT-BC201377  Lupinus albifrons var. albifrons James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  UC864982  Lupinus albifrons var. albifrons Alice Eastwood 1915-5-30 Contra Costa Mt. Diablo Comment
  CAS-BOT-BC201372  Lupinus albifrons var. albifrons Paul F. Covel 1938-6-26 s.n. Contra Costa Las Trampas Canyon - behind St. Mary's Comment
  UC1795855  Lupinus albifrons var. albifrons Barbara Ertter, Brad Olson, Diane Lake 1996-4-14 14594 a Contra Costa Sycamore Spring Trail off Prospectors Gap Rd., east side Mt. Diablo. 640 Comment
  UC2043258  Lupinus albifrons var. collinus Barbara Ertter with Dianne Lake, Chris Thayer, Bruce Baeyert 1996-5-16 14674 Contra Costa Point Molate Navel Fuel Depot north of San Rafael bridge, edge of San Francisco Bay. Comment
  UC1948937  Lupinus arboreus William J. Ferlatte, L. Maynard Moe 1970-4-27 1262 Contra Costa San Francisco Bay: Red Rock Island Comment
  UC73195  Lupinus bicolor Chesnut and Drew 1889-4-18 Contra Costa Antioch Comment
  JEPS111069  Lupinus bicolor Lee Echols 2003-4-1 s.n. Contra Costa N of Lark Drive in SE portion of grassland within UC Berkeley's Richmond Field Station, app. .5 miles from Hwy 580 off Bayview Ave, Richmond. 15 Comment
  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
  POM23955  Lupinus densiflorus var. aureus Harriet Ann Walker 1911-7-8 2526 Contra Costa Near Point Isabel, east shore of San Francisco Bay. Comment
  CDA6113  Lupinus formosus D. G. Kelch 2007-5-12 7 .289 Contra Costa Carquinez Strait; Franklin Ridge, S of Hwy 4 at McEwen Rd. Comment
  UCD107762  Lupinus formosus P. B. Kennedy 1916-5-11 12 Contra Costa Grand View Terrace; Richmond District. Comment
  UC692522  Lupinus formosus Mary L. Bowerman 1936-9-9 3538 Contra Costa Sycamore Canyon Mount Diablo (small flat valley e of Forces' house); , Sycamore Canyon 274 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
  UC1129458  Lupinus formosus var. formosus C. M. Belshaw 1936-5-7 2044 Contra Costa 2 mi s San Ramon; Mt. Diablo Quad. Comment
  JEPS128772  Lupinus latifolius Kevin Hintsa 2000-6-30 Contra Costa Oyster Point Trail east of Oyster Point (=newly worked section of trail), Mount Diablo State Park. Comment
  JEPS25129  Lupinus microcarpus var. densiflorus G. Thomas Robbins 1959-4-18 3992 Contra Costa along Western Drive near and n Pt. Richmond (western base of Potrero Hills, Richmond); western base of Potrero Hills, n of Pt. Richmond 4 Comment
  UC201016  Lupinus microcarpus var. densiflorus Katharine Brandegee 1918-6-16 Contra Costa near Virgorit Powder Works; near Vigorit Powder Works Comment
  UC692273  Lupinus microcarpus var. densiflorus Mary L. Bowerman 1930-6-10 293 Contra Costa near Mineral Spring Mount Diablo (Mount Diablo) 396 Comment
  JEPS65467  Lupinus microcarpus var. microcarpus W. L. Jepson 1921-5-22 9214 Contra Costa Mt. Diablo; Mt. Diablo, s slope 609 Comment
  UC1562540  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
  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
  UC201009  Lupinus microcarpus var. microcarpus Katharine Brandegee Aug 1918 Contra Costa Richmond Annex; El Dorado St. and Sta. Clara Ave. Comment
  UC201021  Lupinus microcarpus var. microcarpus Katharine Brandegee June 1918 Contra Costa Richmond Annex; El Dorado St. Comment
  UC201023  Lupinus microcarpus var. microcarpus Katharine Brandegee June 1918 Contra Costa El Dorado St. Richmond Annex (Richmond Annex); , El Dorado St. Comment
  UC201035  Lupinus microcarpus var. microcarpus Katharine Brandegee 1918-6 Contra Costa Richmond Annex Comment
  UC201037  Lupinus microcarpus var. microcarpus Katharine Brandegee 1918-6-19 Contra Costa Richmond Annex , base of a rocky hill (El Dorado St.) Comment
  JEPS78983  Lupinus microcarpus var. microcarpus Edward Lee with Annetta Carter 1935-6-13 1430 Contra Costa Panhandle Boulevard south Richmond; , Panhandle Boulevard Comment
  UC2028172  Lupinus microcarpus var. microcarpus Barbara Ertter 1998-5-3 16050 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC1301168  Lupinus nanus Helen K. Sharsmith 1962-4-18 4960 Contra Costa near Canyon; San Francisco Bay Region 152 Comment
  UCD109081  Lupinus nanus P. B. Kennedy 1916-5-11 31 Contra Costa Grand View Terrace; Richmond District. Comment
  UC2031457  Lupinus pachylobus Barbara Ertter with David Gowen 2014-4-9 21709 Contra Costa Ridge running SE from Devil's Elbow on south side of Mount Diablo summit Comment
  CHSC21642  Lupinus succulentus Willis Ball 1975-3-2 464 Contra Costa Contra Loma Regional Park. In area #4. At edge of beach on e side of lake ca. 50 yds s of dam. 33 Comment
  SEINET8057995  Lupinus succulentus H. E. Hodge 1956-4-7 13 Contra Costa Tice Canyon Road in Walnut Creek 61 Comment
  UC691937  Luzula comosa Mary L. Bowerman 1933-5-8 2021 Contra Costa Mount Diablo , Rock City Ridge, = Fossil Ridge (half way down to canyon bottom Rock City Ridge, = Fossil Ridge) Comment
  UC2028039  Luzula comosa Barbara Ertter 1998-3-7 15930 Contra Costa Dan Cook Canyon on southwest side of Mount Diablo. Comment
  JEPS112442  Luzula macrantha Dean G. Kelch 2004-4-11 04 .63 Contra Costa Crockett - 5th St. Prairie 85 Comment
  JEPS67204  Luzula macrantha W. L. Jepson 1943-4-24 20761 Contra Costa Vicinity San Francisco Bay, Oakland Hills, Moraga Ridge Comment
Read comments Jan 25 2008
  CDA1506  Lythrum californicum D. G. Kelch 1996-10-17 s.n. Contra Costa Carquinez Strait; Pt Edith Marsh Comment
  POM300654  Lythrum californicum Mary L. Bowerman 1932-12-5 1681 Contra Costa Willow Spring (near W road, N of Blvd Spring. Comment
  UC5897  Maclura pomifera W. G. Klee June 1880 Contra Costa road to Walnut Creek 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
  JEPS99516  Madia elegans subsp. densifolia Mary Bowerman 1978-7-9 Contra Costa Mount Diablo, Russelman Park Comment
  CAS-BOT-BC344324  Madia exigua Joseph Andorfer Ewan 1936-5-24 9693 Contra Costa West slope Bald Peak, San Pablo Ridge Comment
  JEPS111711  Madia exigua D. G. Kelch 2004-5-9 04 .205 Contra Costa Crockett - Edwards Canyon; Upper Edwards Canyon 160 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-BC342983  Madia gracilis John Thomas Howell 1931-5-12 6484 Contra Costa North side of Mt. Diablo Comment
  UC2029060  Madia gracilis 'Barbara Ertter with Save Mount Diablo outing 2003-5-8 18167 Contra Costa Mangini property on knoll west of Mount Zion, NW corner of Mount Diablo. Comment
  POM267781  Madia gracilis subsp. gracilis D. D. Keck 1941-6-5 5309 Contra Costa Berkeley Hills, Fish Creek Road 1/4 mile W of E portal of Broadway Tunnel. 335 Comment
  JEPS6745  Madia radiata R. F. Hoover 1941-4-12 4836 Contra Costa 1 mi n Lone Tree Valley Comment
Read comments Aug 21 2017
  SD8607  Madia radiata Brandegee Apr 1889 Contra Costa Antioch Comment
Read comments Jan 9 2007
  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
  JEPS21968  Madia sativa G. Thomas Robbins with S. Galen Smith 1958-6-2 3848 B Contra Costa along Franklin Canyon Road (State Hwy 4) south and above Refugio Valley (just e of Hercules city boundary, around edge of earth dump on grassy slope) 18 Comment
  POM267969  Madia sativa D. D. Keck 1941-6-5 5310 Contra Costa Berkeley Hills, Fish Creek Road 1/4 mile W of E portal of Broadway Tunnel. 335 Comment
  RSA577468  Maianthemum racemosum subsp. amplexicaule Joseph A. Ewan 1934-6-8 8755 Contra Costa South Fork Marsh Creek, Mt. Diablo 305 Comment
  CAS-BOT-BC206242  Malacothamnus fasciculatus H. M. Hall; F. M. Essig 1916-5-30 10131 Contra Costa Mt. Diablo, on the westerly side north of Pine Canyon 290 Comment
  UC692618  Malacothamnus fremontii Mary L. Bowerman 1938-6-30 3696 Contra Costa below Blue Oak Flat; Mount Diablo 762 Comment
  POM301021  Malacothamnus hallii Mary L. Bowerman 1933-6-3 2223 Contra Costa 2 miles by road from North Gate Comment
  CAS-BOT-BC204089  Malacothamnus hallii Lewis S. Rose 1954-6-29 54082 Contra Costa Mt. Diablo 2 1/2 mi. n. of Turtle Rock 182 Comment
  RSA0116396  Malacothamnus hallii Lewis S. Rose 1954-6-29 54082 Contra Costa Mt. Diablo 2.5 mi n. of Turtle Rock. 183 Comment
  SEINET10680800 Image available Malacothamnus hallii Harvey M. Hall 1916-5-30 Hall 301 Contra Costa Mt. Diablo. On the westerly side north of Pine Canon, Upper Sonoran Zone. Growing on stony south slope, associated with Artemisia californica, Salvia mellifera, Mimulus glutinosus, and Lofus glaber, and with thickets of Adenostoma fasciculatum near by. 275 Comment
  UC33270  Malacothrix californica J. Burtt Davy 1895-4-7 881 Contra Costa Antioch Comment
  CAS-BOT-BC347392  Malacothrix floccifera Alice Eastwood 1915-5-30 4516 Contra Costa Mt. Diablo Comment
  UC691448  Malacothrix floccifera Mary L. Bowerman 1930-6-10 302 Contra Costa Meridian Peak summit Mount Diablo Comment
  JEPS111545  Malvella leprosa D. G. Kelch 2004-7-9 04 .306 Contra Costa Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite 60 Comment
  UC2028362  Malvella leprosa Barbara Ertter with Tony Morosco 1998-7-11 16363 Contra Costa North base of Mount Diablo, near small pond on north side of Bruce Lee Road east of Mitchell Canyon staging area Comment
  UC2029012  Malvella leprosa Barbara Ertter with Dan Norris 1999-11-14 16849 Contra Costa Black Diamond Mines Regional Preserve, south of parking area for Somersville townsite. Comment
  SEINET3450872  Marah fabacea Dean G. Kelch, Andrew G. Murdock 2003-3-21 DGK 3 .040 Contra Costa Martinez West, Martinez West, Ozol Rock and Scenic Drive 40 Comment
  UC692642  Marah fabacea Mary L. Bowerman 1931-4-4 634 Contra Costa 2 mi by road North Gate; Mount Diablo 228 Comment
  CHSC46893  Marah oregana R. A. Schlising 1965-4-6 2780 Contra Costa Berkeley Hills. Comment
  CHSC46931  Marah oregana Robert A. Schlising 1962-7-7 2331 Contra Costa Along Pinehurst Road. Comment
  JEPS63286  Marrubium vulgare Mrs. E. L. Mossman 1931-3-20 74 Contra Costa e Richmond (Berkeley Hills); Berkeley Hills Comment
  SEINET10581732  Marrubium vulgare John T. Middleton 1936-4-18 Middleton 135 Contra Costa Comment
  CAS-BOT-BC348049  Matricaria discoidea Mary L. Bowerman 1931-4-4 653 Contra Costa Mount Diablo. North Road 4.5 miles from North Gate Comment
  POM11845  Matricaria occidentalis Katherine Brandegee 1916-05 s.n. Contra Costa Byron Springs Comment
  CDA29088  Medicago arabica D. G. Kelch 2006-5-7 6 .15 Contra Costa Carquinez Strait.; Crockett. Upper Edward s Canyon. Comment
  UC1606303  Medicago arabica Barbara Ertter, Chris Thayer 1993-5-7 11699 Contra Costa on Wildcat Canyon Rd. 1/2 mi e Inspiration Point (e of Tilden Park); East Bay Municipal Utilities District land, Hopkins Spring 304 Comment
  CHSC21646  Medicago polymorpha Willis Ball 1975-3-2 476 Contra Costa Contra Loma Regional Park. In area #4. On e side of lake ca. 100 yds s of dam. 30 Comment
  UC1197428  Medicago polymorpha Joseph P. Tracy 1934-4-30 13189 Contra Costa between Lafayette and Moraga 152 Comment
  JEPS127048  Medicago polymorpha var. polymorpha Lowell Ahart, Josephine Guardino 2016-4-19 20762 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
  SD218256  Melica californica William J. Ferlatte, L. Maynard Moe 1970-4-27 1260 Contra Costa San Francisco Bay, Red Rock Island, near summit. Comment
  UC53582  Melica californica H. M. Hall 1904-4-5 Contra Costa Mt. Diablo; San Francisco Bay Region Comment
  UC692468  Melica californica Mary L. Bowerman 1933-5-8 2029 Contra Costa n of Rock City (Mount Diablo); Mount Diablo Comment
  UCD87005  Melica californica R. E. Cuendett 1915-4-18 s.n. Contra Costa Foot of Mt. Diablo. Comment
  UC692464  Melica imperfecta Mary L. Bowerman 1931-4-18 714 Contra Costa Sycamore Canyon; Mount Diablo 335 Comment
  CAS-BOT-BC281432  Melica imperfecta Walter Knight 1972-4-1 s.n. Contra Costa Mallard Slough between Port Chicago and Pittsburg Comment
  CDA9434  Melica imperfecta D. G. Kelch 2002-5-2 s.n. Contra Costa Altamont Hills; Corral Hollow Rd. 0 Comment
  CAS-BOT-BC262506  Melica torreyana John Thomas Howell 1933-5-14 11257 Contra Costa Hills east of St. Mary's College Comment
  SEINET3449596  Melica torreyana Dean G. Kelch, Andrew G. Murdock 2003-3-21 DGK 3 .055 Contra Costa Martinez West, Martinez West, Ozol Rock and Scenic Drive 40 Comment
  UC53660  Melica torreyana Jos. Burtt Davy 1899-4-19 7862 Contra Costa Las Trampas Creek Comment
  POM300623  Melica torreyana Mary L. Bowerman 1935-5-18 3024 Contra Costa Mount Diablo, Northwest facing slope across the road from, and a little east of, the parking area. 1067 Comment
  UC1950128  Melica torreyana Barbara Ertter with John Little 1989-4-2 8111 Contra Costa Hillside Park in El Cerrito, on steep W-facing slope Comment
  CHSC116633  Melilotus indicus Lowell Ahart; Josephine Guardino 2016-4-19 20801 Contra Costa Undesignated section of Canada de Los Vaqueros Land Grant. Below the high water line of Los Vaqueros Reservoir, 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 of Stockton. 144 Comment
  UC691474  Mentha spicata Mary L. Bowerman 1938-11-19 3733 Contra Costa Mitchell Canyon Mount Diablo (by stream); , Mitchell Canyon 228 Comment
  OBI72118  Mentzelia affinis Barbara Ertter 1991-5-5 9773 Contra Costa Black Diamond Mines Regional Preserve S of Pittsburg, S side of Rose Hill above Nortonville Pass 366 Comment
  JEPS99553  Mentzelia dispersa Mary L. Bowerman 1978-5-26 Contra Costa Mount Diablo. Between lower summit parking lot and road. Comment
  UCD117222  Mentzelia dispersa P. B. Kennedy 1916-5-21 s.n. Contra Costa between Diablo and summit. Comment
  POM274554  Mentzelia dispersa L. R. Abrams 1921-5-25 8014 Contra Costa On road to summit, Mt. Diablo. Comment
  RSA720796  Mentzelia dispersa Mary L. Bowerman 1978-6-3 s.n. Contra Costa Mount Diablo. Between lower summit parking lot and road. Comment
  JEPS99537  Mentzelia micrantha Mary L. Bowerman 1978-5-26 Contra Costa Mount Diablo, N of lower summit parking lot. Comment
  UC672665  Mentzelia micrantha H. L. Mason 1928-4-29 4435 Contra Costa Mount Diablo, Sycamore Canyon Comment
  UC1795721  Mentzelia micrantha Barbara Ertter, Mary L. Bowerman 1994-6-19 12848 a Contra Costa Mt. Diablo State Park east of Walnut Creek; lower Summit Parking Lot, roadside. Comment
  SEINET200754  Microcala quadrangularis J. P Tracy 1900-3-24 608 Contra Costa Near Stege 3 Comment
  UCD16073  Microlepia strigosa Glen Holstein 1988-2-12 s. n. Contra Costa California. Contra Costa County: City of Danville. Comment
  CDA31454  Micropus californicus D. G. Kelch 2006-5-2 6 .21 Contra Costa Carquinez Strait; Fernandez Ranch; W. Christie Rd. Comment
  JEPS100177  Micropus californicus G. Smick 2003-4-29 GAS 149 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  RSA720807  Micropus californicus var. californicus Barbara Ertter, Tony Morosco, Lynne Hosley 1995-5-29 14223 Contra Costa Mt. Diablo southeast of Walnut Creek, north-facing slope north of Curry Point 518 Comment
  CAS-BOT-BC348648  Micropus californicus var. subvestitus Brandegee No date on label s.n. Contra Costa Antioch Comment
  CHSC67881  Microseris acuminata James D. Jokerst 1989-3-28 3052 Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  UCD77859  Microseris douglasii Robert E. Preston 1997-3-8 1018 Contra Costa Black Diamond Mines Regional Park, along Stewartsville Trail. 91 Comment
  UC2027921  Microseris douglasii Barbara Ertter with Dan Norris 2001-4-8 17583 Contra Costa Lime Ridge Open Space east of Walnut Creek, high part of main ridge. Comment
  POM301040  Microseris douglasii subsp. douglasii Mary L. Bowerman 1933-5-8 2012 Contra Costa Fossil Ridge near crest, on north side by side road, Mount Diablo Comment
  UC2027852  Microseris douglasii subsp. douglasii Barbara Ertter with Stu Garrett 1997-3-29 15527 a Contra Costa West side Mount Diablo, Burma Road on Long Ridge Comment
  UC70182  Microseris douglasii subsp. tenella J. Burtt Davy May 1898 Contra Costa Danville Mount Diablo Region Comment
  CAS-BOT-BC349169  Microseris elegans Brandegee No date on label s.n. Contra Costa Byron Springs Comment
  JEPS10223  Mimulus aurantiacus var. aurantiacus W. L. Jepson 1922-5-23 9650 Contra Costa Mt. Diablo Comment
  RSA454334  Mimulus guttatus L. S. Rose 1941-3-27 41064 Contra Costa 2 mi. w. of Byron. 46 Comment
  UC2028091  Mimulus guttatus Barbara Ertter, Tony Morosco 1998-4-12 16001 Contra Costa Base of Mount Olympia on north side of Mount Diablo, NE of Olympia Trail. Comment
  UC193602  Mimulus latidens M. K. Curran May 1886 Contra Costa Antioch Comment
  UC27034  Mimulus latidens W. H. Brewer 1862-5-26 1161 Contra Costa near Mt. Diablo; ; near Mt. Diablo Comment
  UC691909  Mimulus nasutus Mary L. Bowerman 1933-5-9 2056 Contra Costa e Pine Saddle; Mount Diablo, Curry Creek tributary Comment
  JEPS51443  Minuartia douglasii W. L. Jepson 1931-3-21 15712 Contra Costa Grizzly Peak; face, s slope, 600 ft below top Comment
  UC2027714  Minuartia douglasii Barbara Ertter with Stu Garrett 1997-3-29 15525 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  UC54731  Minuartia pusilla J. P. Tracy 1903-4-18 1798 Contra Costa slope beyond Bald Peak; Region about San Francisco Bay, Berkeley Hills 304 Comment
  CAS-BOT-BC384001  Mirabilis jalapa D. E. Breedlove 1969-10-18 16711 Contra Costa On Reliez Valley Road at the junction with Gloria Terrace; Lafayette Comment
  CDA33814  Moehringia macrophylla D. G. Kelch, Abigail Moore, Michael Park, Troy 2010-5-15 10 .115 Contra Costa Mt. Diablo. Trail from Prospector s Gap to Lower Summit parking lot. 0 Comment
  RSA135441  Monardella douglasii Volney Rattan 1886-6-14 s.n. Contra Costa Mt. Diablo Comment
  UC691412  Monardella douglasii Mary L. Bowerman 1930-6-22 369 Contra Costa Mitchell Canyon Trail, above main canyon Mount Diablo Comment
  CAS-BOT-BC220509  Monardella villosa Katharine Brandegee 1907-7-4 s.n. Contra Costa Martinez Comment
  CAS-BOT-BC220512  Monardella villosa John Thomas Howell 1929-7-7 4324 Contra Costa On northern slope near south end of Carquinez Bridge 45 Comment
  CHSC67994  Monardella villosa subsp. villosa James D. Jokerst 1987-6-16 2915 Contra Costa Livermore Valley, 0.3 mi W of Vasco Rd. and +/- 200 m SW of a dirt track. Comment
  UC2027734  Monardella villosa subsp. villosa Barbara Ertter 1997-2-16 15459 Contra Costa Shell Ridge Open Space on west flank of Mount Diablo, exposed sandstone on main ridgeline. Comment
  UC2028367  Monardella villosa subsp. villosa Barbara Ertter 1998-6-20 16252 Contra Costa Shell Ridge Open Space on NW side of Mount Diablo, N-facing slope above Coyote Creek Comment
  SBBG27321  Monolopia gracilens L. S. Rose 1935-5-16 35166 Contra Costa Mt Diablo Comment
  POM301019  Monolopia gracilens Mary L. Bowerman 1933-5-9 2057 Contra Costa Mount Diablo: Muir Area, southeast slope east of the rocks Comment
  CAS-BOT-BC349617  Monolopia major James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  CAS-BOT-BC349621  Monolopia major Dr. A. Kellogg 1869-4-8 s.n. Contra Costa Antioch Comment
  UC629740  Monolopia major Ethel Crum 1939-3-19 2083 Contra Costa 2 mi w Byron 45 Comment
  UC629756  Monolopia major Ethel Crum 1936-4-6 1741 Contra Costa 2 mi w Byron 45 Comment
  SEINET11810308  Monolopia major L. S. Rose 1932-1 3280 Contra Costa Byron Comment
  UC1606312  Montia fontana Barbara Ertter, Chris Thayer 1993-5-7 11691 Contra Costa 1/2 mi se of Inspiration Point (on Wilcat Canyon Road, East Bay Municipal Utilities District land e of Tilden Park); Hopkins Spring, East Bay Municipal Utilities District land 304 Comment
  UC1607685  Montia fontana Barbara Ertter, Lynne Hosley 1993-4-17 11511 Contra Costa Morgan Territory 10 air mi n of Livermore (in lee of Mount Diablo, s of Hummingbird trail,); Morgan Territory 609 Comment
  CAS-BOT-BC83285  Myosurus minimus M. K. Curran 1884-1-1 s.n. Contra Costa Near Antioch. Comment
  CAS-BOT-BC83291  Myosurus minimus Herbert L. Mason 1952-4-26 14268 Contra Costa 3.5 miles south of Byron. Comment
  UC1738085  Myosurus minimus H. L. Mason 1957-3-22 14268 B-6 Contra Costa 3 mi S of Byron ( on road to Herdlyn) Comment
  UCD96579  Myosurus minimus Roman Gankin 1958-3-8 s.n. Contra Costa ca. 3 miles south of Byron. Comment
  UCD96601  Myosurus minimus D. E. Stone 1957-4-4 70 B Contra Costa On State 4, 1 mile south of Byron. Comment
  CAS-BOT-BC7111  Myosurus minimus subsp. apus M. K. Curran 1884-1-1 s.n. Contra Costa Antioch Comment
  UC1738112  Myosurus minimus subsp. apus D. E. Stone 1955-8-29 14 -8 Contra Costa 3 mi S of Byron (on the road to Herdlyn) Comment
  UC1101333  Myosurus sessilis Herbert L. Mason 1952-4-14 14264 Contra Costa 3.5 mi s of Byron Comment
  UC1738117  Myosurus sessilis D. E. Stone 1955-8-26 8 -2 Contra Costa 3 mi S of Byron ( on road to Herdlyn) Comment
  SBBG122790  Najas guadalupensis B. Ertter, B. Olson 1991-9-28 10838 Contra Costa S end of San Pablo Reservoir, between Orinda and El Sobrante 91 Comment
  CAS-BOT-BC259906  Nassella lepida D. E. Breedlove 1970-4-18 17447 Contra Costa At the N edge of Lafayette above Laurel Drive 243 Comment
  UC691263  Nassella lepida Mary L. Bowerman 1935-6-28 3161 Contra Costa canyon w of meridian below place where pipe crosses (s base of peak); Mount Diablo, Meridian Peak 441 Comment
  UC697123  Nassella lepida Mary L. Bowerman 1935-5-1 2936 Contra Costa North Road 2 mi from North Gate (se exp.); Mount Diablo 182 Comment
  POM301847  Nassella lepida Mary L. Bowerman 1935-5-1 2936 Contra Costa North Road 2 mi from North Gate Comment
  JEPS100037  Nassella pulchra S. O'Neil 2003-3-11 SEO 18 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  POM300686  Nassella pulchra Mary L. Bowerman 1933-5-25 2191 Contra Costa Alamo Canyon; above Wilson's barn. Oyster Ridge, west end of south face. Comment
Read comments Nov 1 2011
  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
  SEINET3163766  Navarretia mellita J. T. Howell 1938-6-30 13938 Contra Costa head of Siesta Valley Comment
  UC703025  Navarretia mellita John Thomas Howell 1942-7-19 17045 Contra Costa ne of Deer Flat; Mt. Diablo Comment
  JEPS116990  Navarretia nigelliformis subsp. radians David Gowen 2008-4-16 857 Contra Costa West end of Horse Valley. 146 Comment
  UC30206  Navarretia pubescens W. H. Brewer 1862-5-19 1113 Contra Costa n of Kirkers Pass Comment
  JEPS112009  Navarretia squarrosa Christopher Thayer 1995-6-5 Contra Costa West of Pinole Peak 274 Comment
  CAS-BOT-BC7190  Nemophila decumbens M. K. Curran 1883-5-1 s.n. Contra Costa Mt. Diablo Comment
  JEPS3220  Nemophila heterophylla W. L. Jepson 1923-4-22 9868 Contra Costa Mt. Diablo Vicinity of San Francisco Bay, Mt. Diablo Comment
  UC67124  Nemophila heterophylla Harley P. Chandler 1901-4-5 949 Contra Costa Pine Canyon , Pine Canyon (Mt. Diablo) Comment
  UC67127  Nemophila heterophylla Harley P. Chandler 1901-3-22 850 Contra Costa between Martinez and Port Costa (Region of San Francisco Bay); , bet Martinez and Port Costa Comment
  RSA421271  Nemophila heterophylla H. de Forest 1930-4-6 s.n. Contra Costa [No location information on label.] Comment
  JEPS25353  Nemophila menziesii Rimo Bacigalupi with Paul C. Hutchinson and John Weiler 1959-3-19 6963 Contra Costa 2.4 mi w Byron (s-facing low hill along Camino Diablo, 0.3 mi e of junction with Vasco Road); along Camino Diablo, w of Byron 60 Comment
  UCSB7545  Nemophila menziesii Kamb, Peter; Chisaki, Francia 1950-3-18 Contra Costa Saddle between North and South Peaks of Mount Diablo 883 Comment
  SBBG40449  Nemophila menziesii var. menziesii W. J. Dress 1951-3-17 Contra Costa W of Orinda Comment
  UC592126  Nemophila pedunculata H. L. Mason 1932-3-20 6841 Contra Costa Antioch sand hills Comment
  UC2028229  Nerium oleander Barbara Ertter 1998-11-15 16467 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  CDA22540  Nicotiana acuminata var. multiflora Slattergren 2008-7-22 PDR# 1373540 Contra Costa Walnut Creek, 1575 North Gate Rd. 0 Comment
  JEPS105740  Nicotiana quadrivalvis David Gowen 2004-6-18 124 Contra Costa Lime Ridge Open Space. East of golf course and large quarry area, and just north of Manzanita Trail. 650 ft. elev. Comment
  JEPS44838  Oemleria cerasiformis H. H. Haworth 1917-4-22 Contra Costa Orinda Park Comment
  UC691106  Oemleria cerasiformis Mary L. Bowerman 1935-3-16 2734 Contra Costa Peach Tree Springs Rd. Mount Diablo (e fork of canyon) 228 Comment
  UCD127743  Oenanthe sarmentosa Walter Knight; Irja Knight et al. 1978-9-5 3222 Contra Costa Browns Island. In marsh south of Sandy Knoll. Comment
  RSA0027719  Oenothera deltoides subsp. cognata Barbara Ertter, Chris Thayer 1994-5-19 12782 Contra Costa Highway 4 between Brentwood and Oakley at Honey Lane, halfway between Cypress Rd and Delta Rd. Comment
  CAS-BOT-BC171588  Oenothera deltoides subsp. howellii J. H. Thomas 1953-4-25 3004 Contra Costa Antioch sand hills along San Joaquin River, 2 miles west of Antioch Bridge Comment
  CAS-BOT-BC171591  Oenothera deltoides subsp. howellii P. A. Munz 1949-6-1 14436 Contra Costa Sand dunes east of Antioch. Comment
  POM355600  Oenothera deltoides subsp. howellii Peter H. Raven 1965-5-9 20181 Contra Costa Antioch dunes Comment
  UC1084504  Oenothera deltoides subsp. howellii G. Thomas Robbins 1940-5-19 325 Contra Costa cliffs above river e Antioch; San Joaquin River Comment
  RSA119418  Oenothera deltoides subsp. howellii William M. Klein 1958-6-9 434 Contra Costa Sandhills N of Antoch, along the San Joaquin River Channel. 2 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
  RSA0004532  Oenothera deltoides var. howellii Alice Eastwood, J. T. Howell 1936-4-19 2147 Contra Costa Sand dunes at Antioch Comment
  CHSC97920  Olea europaea D. G. Kelch 2006-6-23 06 .322B Contra Costa West Valona. West of the Zampa Bridge above San Pablo Ave. Along small stream draining north into the western end of the Carquinez Strait. 91 Comment
  UC2027743  Olea europaea Barbara Ertter 1997-1-5 15437 Contra Costa Lime Ridge Open Space on northwest side of Mount Diablo, section on north side of Ygnacio Valley Road. Comment
  CAS-BOT-BC502761  Orobanche bulbosa A. D. E. Elmer 1903-6-1 5097 Contra Costa Mount Diablo Comment
  JEPS10811  Orobanche fasciculata Mary L. Bowerman 1935-5-22 3056 Contra Costa Saddle west of Twin Peaks. Comment
  JEPS127850  Orobanche fasciculata Adam C. Schneider 2014-5-15 553 Contra Costa Mt. Diablo State Park. Above Murchio Gap on Bald Ridge Trail Comment
  UC1125588  Orobanche fasciculata C. M. Belshaw 1936-5-8 2055 Contra Costa SE Slope of Mount Diablo. Comment
  UC691743  Orobanche fasciculata Mary L. Bowerman 1933-6-7 2255 Contra Costa Mount Diablo. North Peak Ridge, south face. Comment
  UC1607664  Orobanche uniflora Barbara Ertter with Michelle Seidl 1992-3-14 10918 Contra Costa Morgan Territory Regional Preserve e of Mount Diablo; Morgan Territory Regional Preserve Comment
  JEPS19479  Orobanche vallicola Herbert L. Mason 1929-9-21 5432 Contra Costa 3 mi. above Clayton (Marsh Creek Rd.) Comment
  UC1076297  Orobanche vallicola Herbert L. Mason 1929-9-21 5432 Contra Costa 3 mi above Clayton (Marsh Creek Road); Marsh Creek Road Comment
  CAS-BOT-BC502955  Orobanche vallicola John Thomas Howell 1929-9-21 4391 Contra Costa Marsh Creek Road, 7 miles SE of Clayton Comment
  CAS-BOT-BC238373  Orthocarpus James McMurphy 1910-4-9 s.n. Contra Costa Antioch Comment
  RSA29779  Orthocarpus erianthus Joseph A. Ewan 1934-4-8 8762 Contra Costa Head of Hog Canyon, S slope Mt Diablo. 640 Comment
  SEINET10549722  Orthocarpus purpurascens John T. Middleton 1936-4-10 Middleton 134 D Contra Costa Deer valley. Comment
  JEPS97615  Osmorhiza berteroi R. D. Stone 1981-3-23 350 Contra Costa NE of intersection of Skyline Blvd. and Snake Rd. Huckleberry Trail; Oakland Hills, near Alameda-Contra Costa county line 396 Comment
  UC2062643  Osmorhiza berteroi Barbara Ertter with Mike Park, David Gowen, and Victoria Seidman 2004-4-26 18370 Contra Costa Curry Canyon between Alder Creek and Rhine Canyon, south side of Mount Diablo. Comment
  UC691788  Osmorhiza brachypoda Mary L. Bowerman 1935-6-15 3129 Contra Costa grassy ridge running n from Mitchell-Pine divide at 3100 foot level; Mount Diablo 868 Comment
  CHSC75108  Oxalis pes-caprae Roger Thom 1987-4-21 4 Contra Costa 3300 block of Johnson Rd. Lafayette. At edge of field. 152 Comment
  UC2029198  Oxalis pes-caprae Barbara Ertter 2003-2-8 18093 Contra Costa Richmond Field Station (UC-Berkeley) Comment
  UC1818876  Panicum miliaceum subsp. miliaceum Barbara Ertter 1995-8-19 14505 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
  CAS-BOT-BC259646  Paspalum dilatatum John Thomas Howell; Gordon H. True 1972-6-29 48940 Contra Costa Along Byron Hot Springs Road where water has stood, SE of Byron Comment
  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
  CAS-BOT-BC259723  Paspalum distichum John Thomas Howell; Gordon H. True 1972-6-29 48941 Contra Costa Along Byron Hot Springs Road, SE of Byron Comment
  UCD84177  Paspalum distichum Chuck Hughes 2009-10-2 136 Contra Costa Marsh Creek at County Jail on Marsh Creek Road. 179 Comment
  UC691634  Pectocarya pusilla Mary L. Bowerman 1933-5-8 2019 Contra Costa near crest Rock City Ridge (n side by rd to camp ground); Fossil Ridge Comment
  UC766190  Pectocarya pusilla R. F. Hoover 1938-5-4 3351 Contra Costa peak to the e Tassajero Creek Comment
  CHSC28128  Pedicularis densiflora R. A. Emmrich 1975-3-14 97 Contra Costa Ca. 1/2 mi w of Ranger Station no. 2 and 10 yds n of Diablo Rd., Mount Diablo State Park. 1127 Comment
  UC1125734  Pedicularis densiflora C. M. Belshaw 1936-2-16 1586 Contra Costa 2 1/2 mi nw of Lafayette 518 Comment
  UC54771  Pedicularis densiflora Joseph P. Tracy 1903-4-18 1801 Contra Costa hills near Berkeley (e slope beyond Bald Peak); San Francisco Bay Region 304 Comment
  POM20615  Pediomelum californicum F. W. Peirson 1923-7-1 3618 Contra Costa Contra Costa County: summit of mt Diablo Comment
  UC1818872  Pelargonium inquinans Barbara Ertter, Brad Olson 1994-5-7 12757 Contra Costa S end Pt. Molate Beach Park west of Richmond north of San Rafael Bridge, edge of San Francisco Bay. Openings, especially with seepage, near open brush. Comment
  UC1063391  Penstemon heterophyllus var. purdyi C. M. Belshaw 1936-5-15 2132 Contra Costa Briones Valley 1/2 mi w Marsh Creek (Antioch intersection); Mt. Diablo Quad., w of Marsh Creek Comment
  JEPS108224  Pentachaeta alsinoides David Gowen 2005-5-6 280 Contra Costa Mt. Diablo State Park. South east end of Prospectors Gap Rd., ca 0.3 mile NW of its junction with Ray Morgan Rd. Small area of serpentine outside of the park boundary. Comment
  UC2042960  Pentachaeta alsinoides Barbara Ertter with David Gowen 2006-6-6 18676 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) south of Moraga. Comment
  UC697212  Pentachaeta exilis Mary L. Bowerman 1931-4-4 670 Contra Costa w Turtle Rock; Mount Diablo Comment
  CAS-BOT-BC71614  Pentagramma triangularis D. E. Breedlove 1970-4-18 17426 Contra Costa at the north edge of Lafayette above Laurel Drive 243 Comment
  UC1618309  Perideridia kelloggii Barbara Ertter with Laura Fujii 1990-7-21 9399 Contra Costa Table Top Briones Hills, Briones Regional Park (near microwave tower, w of Pleasant Hill) 426 Comment
  UC1389992  Perideridia oregana T. I. Chuang, L. Constance, R. S. Mitchell, and S. Banwar 1965-7-23 6007 Contra Costa between Green Valley and Pine Creek; Mount Diablo Comment
  SJSU11250  Phacelia breweri D. C. Bettencourt 1959-4-18 Contra Costa by South Rd to summit of Mt Diablo 609 Comment
  UC1069282  Phacelia breweri C. M. Belshaw 1936-5-8 2063 Contra Costa Plot 5 Mount Diablo Quadrangle, Mt. Diablo (se slope of mt.) Comment
  UC1795740  Phacelia breweri Barbara Ertter, Tom Delendick 1996-5-2 14611 Contra Costa Mount Diablo State Park, Deer Flat Road north of Juniper Camp, at cut through open live oak forest, northwest-facing slope. 853 Comment
  UC880993  Phacelia breweri Lewis S. Rose 1941-5-15 41239 Contra Costa summit Mt. Diablo 1188 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
  JEPS2225  Phacelia californica W. L. Jepson 1896-5-31 21044 Contra Costa Gum Grove Reservoir to Wild Cat Creek; Berkeley Hills Comment
  JEPS41060  Phacelia californica Rimo Bacigalupi and L. R. Heckard 1965-5-11 9085 Contra Costa in bay sw Richmond; San Francisco Bay, Brooks Island 30 Comment
  UC1228237  Phacelia californica Beecher Crampton 1950-4-22 533 Contra Costa along state hwy 4 in pass between Concord Valley and Pittsburg (steep hillside in roadcut) Comment
  UC762369  Phacelia californica R. F. Hoover 1938-3-8 2821 Contra Costa Berkeley Country Club (=Mira Vista C.C.) El Cerrito Comment
  UC672410  Phacelia ciliata var. ciliata Herbert L. Mason 1929-3-31 5139 Contra Costa Briones Road Hills northeast of Mount Diablo Comment
  UC767564  Phacelia ciliata var. ciliata R. F. Hoover 1938-3-25 2897 Contra Costa Lone Tree Valley Comment
  UC75117  Phacelia ciliata var. ciliata C. F. Baker 1903-4-26 2904 Contra Costa Byron Comment
  JEPS2366  Phacelia distans Virginia Bailey 1939-5-3 Contra Costa near summit Mt. Diablo Comment
  RSA276851  Phacelia distans James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  UC24351  Phacelia divaricata Harley P. Chandler 1901-4-5 968 Contra Costa Mt. Diablo Comment
  RSA276849  Phacelia douglasii James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  UC691692  Phacelia imbricata subsp. imbricata Mary L. Bowerman 1935-5-22 3046 Contra Costa canyon at n end of ridge which heads into saddle w Twin Peaks; Mount Diablo, Eagle Point Ridge 350 Comment
  UCSC000586  Phacelia magellanica R. F. Hoover 1938-3-8 2821 Contra Costa Berkeley Country Club Comment
  JEPS1082  Phacelia nemoralis subsp. nemoralis Mary L. Bowerman 1933-6-3 2233 Contra Costa Mount Diablo, Ranson Point Trail Mount Diablo; , Ranson Point Trail 1158 Comment
  CAS-BOT-BC154324  Phacelia phacelioides H. L. Mason 1938-5-3 11749 Contra Costa Trail between Juniper Camp and Deer Flat, Mount Diablo Comment
  CAS-BOT-BC154332  Phacelia phacelioides Alice Eastwood 1915-5-30 4520 Contra Costa Near type locality. Mt. Diablo Comment
  CAS-BOT-BC154337  Phacelia phacelioides Alice Eastwood 1921-6-11 s.n. Contra Costa Mt. Diablo Comment
  UC691579  Phacelia phacelioides Mary L. Bowerman 1935-5-8 2974 Contra Costa Muir Area Mount Diablo 1005 Comment
  UC691717  Phacelia rattanii Mary L. Bowerman 1933-6-21 2331 a Contra Costa Donner Canyon Mount Diablo (by stream) Comment
  JEPS101085  Phacelia tanacetifolia Dean W. Taylor 1992-4-16 12394 Contra Costa S of Byron Hot Springs, in swale draining on E margin of NE1/4 SE1/4 Section 34 45 Comment
  JEPS111840  Phacelia tanacetifolia D. G. Kelch 2004-4-3 04 .56 Contra Costa Crockett-Tormey Headlands west of I-80 and Cummings Skyway junction. 75 Comment
  UC306173  Phacelia tanacetifolia Katharine Brandegee Contra Costa Byron Springs Comment
  CDA2277  Phalaris aquatica T. C. Fuller 1961-9-13 7004 Contra Costa Byron-Tracy Hwy (Hwy J4), 0.1 mile north of Delta-Mendota Canal. 0 Comment
  UC1101560  Phalaris arundinacea Malcolm A. Nobs 1948-9-23 683 Contra Costa 7 mi s Kingston (Rock Slough); Rock Slough Comment
Read comments Oct 8 2012
  UCD88527  Phalaris arundinacea Malcolm A. Nobs; S. Galen Smith 1949-7-8 945 Contra Costa Otto's Black Bass Resort, 4 miles N of Kingston. Comment
  CAS-BOT-BC265960  Phalaris minor Mary L. Bowerman 1933-4-15 1849 Contra Costa Canyon south of Arrroyo del Cerro, Mount Diablo Comment
  JEPS72970  Phalaris paradoxa W. L. Jepson 1940-6-5 19937 Contra Costa Richmond Comment
  UCD146719  Phalaris paradoxa G. F. Hrusa; D. Crowe 1998-5-8 14368 Contra Costa Sacramento-San Joaquin River Delta. On Dow Chemical property at Pittsburg. 15 Comment
  UCD89358  Phalaris paradoxa Katharine Brandegee 1916-5-8 s.n. Contra Costa Byron Springs. Comment
  UC2028531  Phalaris paradoxa Barbara Ertter 1998-5-3 16030 Contra Costa Macedo Ranch at southwest base of Mount Diablo. Comment
  UC963765  Phlox gracilis Herbert L. Mason 1926-3-7 2703 Contra Costa via Walnut Creek to summit to Danville to Niles Canyon; Mt. Diablo Comment
  UC691715  Pholistoma auritum Mary L. Bowerman 1931-4-18 722 Contra Costa Sycamore Canyon Mt. Diablo, Sycamore Canyon 350 Comment
  CDA22381  Phoradendron macrophyllum D. G. Kelch, A. G. Murdock 2005-5-13 5 .235 Contra Costa Carquinez Strait Region; Martinez. South of oil refinery along railroad tracks in fragment of habitat. Comment
  JEPS111926  Phoradendron serotinum subsp. macrophyllum Dean G. Kelch and Andrew G. Murdock 2005-5-13 DGK 05 .235 Contra Costa Martinez. South of oil refinery along Railroad tracks in fragment of habitat. Comment
  UC521716  Phoradendron villosum Joseph Andorfer Ewan 1933-10-15 8040 Contra Costa s.w. slope Mt. Diablo 1066 Comment
  UC692036  Phoradendron villosum Mary L. Bowerman 1930-6-22 358 Contra Costa on flat above Mitchell Canyon (Mount Diablo); Mount Diablo Comment
  JEPS78626  Phragmites australis Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3279 Contra Costa Botany Cove Browns Island; , Botany Cove Comment
  JEPS87911  Phragmites australis Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, and Amy Hiss 1991-8-18 10707 Contra Costa n Pittsburg (near confluence of Sacramento and San Joaquin Rivers, opposite Pittsburg Marina, near w end of <Browns> Island); Browns Island Comment
  CAS-BOT-BC260890  Phragmites australis A. D. E. Elmer 1903-7-1 4541 Contra Costa Martinez Comment
  CDA31164  Pickeringia montana D. G. Kelch, Troy McGregor; Ed Biffin 2010-6-1 10 .225 Contra Costa Mt. Diablo. Knobcone Point Rd. Comment
  JEPS46474  Pickeringia montana W. L. Jepson 1919-1-25 8212 Contra Costa Moraga Ridge Comment
  JEPS65576  Pickeringia montana var. montana W. L. Jepson 1918-6-3 7574 Contra Costa Donner Canyon Mt. Diablo 533 Comment
  UC692284  Pickeringia montana var. montana Mary L. Bowerman 1933-6-7 2277 Contra Costa Inner Black Hills Mount Diablo (n exposure, w of 1970) Comment
  UC692672  Pickeringia montana var. montana Mary L. Bowerman 1933-2-4 1690 Contra Costa flat e Mt. Diablo-North Peak divide; Mount Diablo 822 Comment
  CDA39576  Picrasma quassioides E. Dean, Petra Unger 2005-7-19 2700 Contra Costa Contra Costa Water District land, Byron Tract, just south of Highway 4, along Old River, on east bank. 0 Comment
  JEPS47895  Pinus attenuata W. L. Jepson 1923-4-22 9876 Contra Costa Mt. Diablo Mt. Diablo (rocky ridge in chaparral) Comment
  JEPS48223  Pinus attenuata H. M. Wheeler 1944-1-16 Contra Costa Oakland Hills Moraga Ridge; , Moraga Ridge Comment
  UCD50247  Pinus attenuata Howard Ferris 2004-8-18 s.n. Contra Costa Flicker Ridge, Contra Costa County. 318 Comment
  SEINET3871793  Pinus attenuata James K. Detling 1963-2-15 4 Contra Costa On Flicker Ridge Trail near Moraga.; 0 107 Comment
  UC1779708  Pinus halepensis Rudolf Schmid 1997-5-21 1997 -14 Contra Costa Hillside Natural Area, El Cerrito; NW of King Ct. entrance. 175 Comment
  UC1061678  Pinus muricata N. Floy Bracelin 1941-10-19 1713 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CDA28753  Pinus sabiniana S. M. Blank 2007-4-7 Z 16 /07 Contra Costa Sacramento Valley; Mount Diablo State Park, Summit Road. Comment
  JEPS111992  Pinus sabiniana D. G. Kelch 2004-4-3 04 .47 Contra Costa Martinez - Vine Hill 44 Comment
  UC1200775  Pinus thunbergii L. R. Wright 1960-3-10 Contra Costa near Bryant Reservoir <Briones?>; Orinda Comment
  UC2028436  Piptatherum miliaceum Barbara Ertter with Chris Thayer 1996-10-25 15353 Contra Costa Northwest flank of Mount Diablo, Northgate Trail along Little Pine Creek between North Gate Road and Diablo Foothills Regional Park Comment
  CDA19635  Pittosporum undulatum M. I. Wibawa 2003-3-1 330 Contra Costa San Francisco Bay Area; Canyon Trail Park off Conlon Ave, El Cerrito. S 0 Comment
  UC1614071  Plagiobothrys Charles M. Belshaw 1935-6-24 780 Contra Costa 1/2 mi e of Grizzly Peak (n face of Bald Peak); Bald Peak Comment
  CAS-BOT-BC227987  Plagiobothrys David D. Keck 1933-4-2 1995 Contra Costa Vasco Road, eastern county, N of Vasco School Comment
  SEINET3292817 Image available Plagiobothrys Lewis S. Rose 1933-3-29 33046 Contra Costa Pittsburg Comment
  UC517459  Plagiobothrys bracteatus John Thomas Howell 1933-5-14 11232 Contra Costa St. Mary's College Comment
  POM226098  Plagiobothrys bracteatus J. T. Howell 1933-5-14 11232 Contra Costa St. Mary s College Comment
  RSA0027645  Plagiobothrys bracteatus Barbara Ertter 1998-5-3 16058 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. 274 Comment
  RSA721206  Plagiobothrys bracteatus Barbara Ertter 1995-5-7 14031 Contra Costa Three-Springs Trail on NE side of Mt. Diablo SE of Clayton 305 Comment
  UC2027919  Plagiobothrys bracteatus Barbara Ertter, Dan Norris 2001-4-15 17614 Contra Costa West side Mount Diablo, east end Stonegate Trail. Comment
  UC518020  Plagiobothrys canescens Lewis S. Rose 1933-4-17 33098 Contra Costa Antioch Comment
  UC882307  Plagiobothrys canescens Lewis S. Rose 1933-3-29 33046 Contra Costa Pittsburg Comment
  SEINET12275845  Plagiobothrys canescens L. S. Rose 1933-1 33046 Contra Costa Pittsburg Comment
  UC56203  Plagiobothrys fulvus H. M. Hall 1901-3-22 1693 Contra Costa near Clayton; Region of San Francisco Bay Comment
  OBI72067  Plagiobothrys leptocladus Barbara Ertter, Jim Jokerst and Dave Magney 1989-4-5 8129 Contra Costa SE county. W and adj to Clifton Ct Forebay, ca 15 air mi SW of Stockton T1S R3E sec 24 SESW Comment
  JEPS68111  Plagiobothrys nothofulvus Mrs. E. L. Mossman 1931-4-21 139 Contra Costa vicinity Grizzly Peak; Berkeley Hills 472 Comment
  POM368871  Plagiobothrys nothofulvus H. de Forest 1930-3-28 s.n. Contra Costa Contra Costa County Comment
  CDA9492  Plagiobothrys stipitatus var. micranthus D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .216 Contra Costa Byron Airport. Comment
  OBI20604  Plagiobothrys stipitatus var. micranthus Robert F. Hoover 1967-4-28 10510 Contra Costa Byron Hot Springs Comment
  JEPS88008  Plagiobothrys stipitatus var. stipitatus Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8120 Contra Costa ca. 15 air mi. s.w. Stockton (w. & adjacent to Clifton Court Forebay); s.e. Contra Costa Co. Comment
  UC101485  Plagiobothrys stipitatus var. stipitatus Katharine Brandegee Contra Costa near Antioch Comment
  UC691336  Plagiobothrys tenellus Mary L. Bowerman 1933-5-8 2033 Contra Costa flat n Rock City Camp; Mount Diablo Comment
  UC78090  Plagiobothrys tenellus Katharine Curran April 1885 Contra Costa Antioch Comment
  CHSC67898  Plagiobothrys trachycarpus James D. Jokerst 1989-3-28 3054 Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  JEPS111833  Plagiobothrys trachycarpus A. G. Murdock 2004-3-19 230 /231 Contra Costa Hercules - Carbon 50 Comment
  UC1601371  Plagiobothrys trachycarpus Katharine Brandegee Contra Costa Byron Springs Comment
  RSA0029671  Plagiobothrys trachycarpus Barbara Ertter, R. K. Brummitt 1998-5-13 16143 Contra Costa Black Diamond Mines Regional Preserve in hills south of Pittsburg, depression in road from Somersville Road to south leg of Loughler Loop Trail. Comment
  JEPS116853  Plagiobothrys undulatus David Gowen 2007-4-16 677 Contra Costa Briones Regional Park in vernal depression northeast of Sindicich Lagoon. Comment
  JEPS116856  Plagiobothrys undulatus David Gowen 2007-4-16 674 Contra Costa Briones Regional Park on foot trail northwest of Maricich Lagoon. Comment
  RSA756696  Plantago bigelovii subsp. californica Barbara J. Ertter, Jim Jokerst, Dave Magney 1989-4-5 8128 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  UC2028080  Plantago coronopus Barbara Ertter, Tony Morosco 1998-4-12 15990 Contra Costa Base of Mount Olympia on north side of Mount Diablo, open flat below quarry NE of Olympia Trail. 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
  UC1745803  Plantago elongata Annetta M. Carter 1934-3-30 454 Contra Costa Donovan Rd. to Pittsburgh, about 2 mi. SW of Nortonville. Comment
  UC1745837  Plantago elongata Annetta M. Carter 1935-3-10 752 Contra Costa Kirker Pass, Donovan Rd. to Pittsburg. Comment
  POM61278  Plantago erecta C. F. Baker 1903-4-28 2828 Contra Costa Marsh Creek, Mt. Diablo. Comment
  UC1950198  Plantago erecta Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8141 Contra Costa sink W and adjacent to Clifton Court Forebay, ca 15 airmiles SW of Stockton Comment
  UC1818865  Plantago major Barbara Ertter, Kristin Ertter 1995-7-11 14474 Contra Costa Sulfur Spring on Pine Cr, Diblo Foothill Regional Park, marshy wet ground. 121 Comment
  JEPS78614  Plantago subnuda Walter Knight, L. R. Heckard, and Bert Johnson 1978-9-28 3298 Contra Costa Botany Cove, Browns Island Comment
  LA206263  Platystemon californicus Lewis S. Rose; 1941-3-27 41065 Contra Costa 2 mi. W of Byron 60 Comment
  UC1300992  Platystemon californicus Helen K. Sharsmith 1963-3-24 5253 Contra Costa hills e Orinda (San Francisco Bay Region); , e of Orinda 213 Comment
  UC566962  Platystemon californicus R. C. Wilson 1935-3-26 143 Contra Costa 2 mi n Walnut Creek; Concord Quad. Comment
  CAS-BOT-BC91599  Platystemon californicus Mary L. Bowerman 1932-3-23 1133 Contra Costa Mount Diablo. Overlooking Donner Canyon. 304 Comment
  SEINET3160735  Platystemon californicus L. S. Rose 1940-4-11 40189 Contra Costa 2 mi. w. of Byron Comment
  UC2028088  Plectritis ciliosa Barbara Ertter, Tony Morosco 1998-4-12 15985 Contra Costa Base of Mount Olympia on north side of Mount Diablo, south side of lower end of Olympia Trail. Comment
  POM300986  Plectritis macrocera Mary L. Bowerman 1933-4-22 1894 Contra Costa Inner Black Hills: spur running northwest from Cave Pt. Comment
  CAS-BOT-BC260943  Pleuropogon californicus var. californicus W. H. Brewer 1862-5-1 1043 Contra Costa Walnut Creek Comment
  CAS-BOT-BC356113  Pluchea odorata Walter Knight; J. Dean 1978-8-14 3137 Contra Costa Browns Island Comment
  UC1818939  Poa bulbosa Barbara Ertter, Chris Thayer 1995-4-25 13986 Contra Costa Southeast side of Mt. Diablo northeast of Danville; shade of oak forest on Sycamore Creek near junction of path from Knobcone Point Rd. 396 Comment
  CDA946  Poa howellii D. G. Kelch 2006-5-4 6 .127 Contra Costa Carquinez Strait; Vaca Canyon, on North facing road cut/bank along Alhambra Valley Road. Comment
  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
  UC768578  Poa howellii R. F. Hoover 1938-5-4 3353 Contra Costa Upper Marsh Creek Comment
  UCSB12522  Poa pratensis Grah, Nancy 1962-4-14 Contra Costa .2 miles north of Miner Rd. on Sleepy Hollow Lane, Orinda 182 Comment
  CAS-BOT-BC236390  Poa secunda subsp. secunda Mary L. Bowerman 1935-5-3 2960 Contra Costa Mount Diablo. Sloan Road 487 Comment
  UC691174  Poa secunda subsp. secunda Mary L. Bowerman 1932-3-27 1140 Contra Costa below Mitchell Rock; Mt Diablo Comment
  UC691181  Poa secunda subsp. secunda Mary L. Bowerman 1932-4-27 1381 Contra Costa s face Oyster Ridge (canyon w of Riggs Canyon); Mt Diablo 335 Comment
  CAS-BOT-BC236393  Poa secunda subsp. secunda Mary L. Bowerman 1933-5-3 1985 Contra Costa Mount Diablo. [Indian Ceremonial] Canyon: flat a little below and across the stream from the spring 731 Comment
  UCD91679  Poa secunda subsp. secunda P. B. Kennedy 1925-4-25 s.n. Contra Costa Road to Sycamore Canyon, Mt. Diablo. Comment
  SEINET7973850  Poa secunda var. secunda J. B. Davy 1899-4-19 7856 Contra Costa Las Trampas Creek Comment
  SEINET8732915 Image available Pogogyne douglasii Leo Koch 1940-1 1002 Contra Costa Along railroad tracks, saline flat two miles south of San Rafael Ferry dock. Comment
  UC306575  Pogogyne douglasii A. D. E. Elmer May 1903 4320 Contra Costa Walnut Creek Comment
  UC1818877  Polygonum Barbara Ertter 1995-8-19 14504 a 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
  JEPS76288  Polygonum amphibium var. emersum W. L. Jepson 1944-7-23 27538 Contra Costa w side of valley near Moraga Pass; Moraga Valley Comment
  UCD150900  Polygonum argyrocoleon James A. Neilson Jr. 1972-10-22 3510 Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 0 Comment
  UC465853  Polygonum aviculare subsp. aviculare Tracy J. Storer 1912-7-12 Contra Costa 2 mi SW of Walnut Creek 60 Comment
  UC692128  Polygonum aviculare subsp. aviculare Mary L. Bowerman 1930-10-4 475 Contra Costa Maple Spring Mount Diablo 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
  CDA1502  Polygonum ramosissimum var. ramosissimum D. G. Kelch 1996-10-17 s.n. Contra Costa Carquinez Strait; Pt Edith Marsh Comment
  JEPS106988  Polypodium calirhiza J. Greenhouse with Kevin Hintsa 2004-4-5 5088 Contra Costa Mt. Diablo, Fire Interpretive Trail, Devil's Pulpit 1109 Comment
  JEPS112031  Polypodium calirhiza A. G. Murdock 2003-2-21 71 Contra Costa Mt. Wanda - Martinez Edge of oak woodland on top of north-facing hill above train tunnel on Mt. Wanda 90 Comment
  UC1446049  Polypodium calirhiza Alan Smith with Ed Lee 1979-4-25 731 Contra Costa n side Mt. Diablo Peak (trail beyond Devil's Elbow toward saddle between Mt. Diablo and North Peak) 1066 Comment
  UC1478304  Polypodium calirhiza Alan R. Smith with Tom Lemieux 1981-11-19 826 Contra Costa n slope Mt. Diablo (creekside ravine along North Gate Rd., 3.6 mi w of (below) Park HQ (South Gate Rd. junction); Mt. Diablo State Park 640 Comment
  UC1541044  Polypodium calirhiza Dick Moe 1985-2-24 Contra Costa Red Rock Isl.; San Francisco Bay Comment
  UC805287  Polypodium calirhiza W. H. Wagner Jr. 1950-6-4 Contra Costa along rd. above San Pablo Reservoir (near Inspiration Point) Comment
  CAS-BOT-BC422367  Polypogon Peter Rubtzoff 1968-9-19 5967 Contra Costa Russellman Park Road, 0.7 miles south of Marsh Creek Road. Comment
  CAS-BOT-BC233017  Polypogon interruptus L. R. Abrams 1916-6-30 5714 Contra Costa Mount Diablo, near lake Comment
  CAS-BOT-BC232584  Polypogon monspeliensis Walter Knight; Joanne Dean 1978-8-14 3190 Contra Costa Browns Island Comment
  SBBG689  Polypogon monspeliensis A. A. Beetle 1941-6-24 1750 Contra Costa Point Richmond on San Francisco Bay 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
  UC403974  Populus fremontii subsp. fremontii W. L. Jepson 1907-4 Contra Costa near Walnut Creek (San Ramon Valley); San Ramon Valley Comment
  UC1099893  Potamogeton crispus Malcolm A. Nobs, S. Galen Smith 1949-7-7 939 Contra Costa Webb Island in the Sacramento River Delta; San Joaquin Valley Comment
  SD211523  Potamogeton diversifolius Barbara Ertter, Brad Olson 1991-9-28 10839 Contra Costa San Pablo Reservoir between Orinda and El Sobrante, in shallow water at South end of reservoir 91 Comment
  CHSC106696  Potamogeton filiformis Barbara Ertter; Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10715 Contra Costa Browns Island N of Pittsburg near confluence of Sacramento and San Joaquin rivers opposite Pittsburg Marina. Tangled masses in water at W end of island. Comment
  JEPS78627  Potamogeton pectinatus Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3294 Contra Costa mouth of Crooked Slough; Browns Island, East Bay Regional Park District Comment
  UC1618288  Potentilla anserina subsp. pacifica Barbara Ertter, Diane Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10706 Contra Costa opposite Pittsburg Marina (near w end of Browns Island n of Pittsburg, near confluence of Sacramento and San Joaquin Rivers); Browns Island Comment
  CDA29217  Potentilla glandulosa D. G. Kelch 2006-5-7 9 .153 Contra Costa Carquinez Strait.; Crockett. Upper Edward s Canyon. Comment
  CAS-BOT-BC144847  Potentilla rivalis Virginia I. Dains; Walter Knight 1986-8-8 5494 Contra Costa Jct Rock S1 & Werner Cut 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
  JEPS112093  Prunus cerasifera D. G. Kelch 2005-1-21 05 .5 Contra Costa Crockett - West Valona Collected along railroad tracks in West Valona across from the decommissioned sewage treatment plant. 8 Comment
  UC2027948  Prunus cerasifera Barbara Ertter 1997-9-7 15791 Contra Costa North side Mount Diablo, cabin site on Donner Creek, in persisting orchard. Comment
  UC2012995  Prunus dulcis Barbara Ertter with Lisa Schultheis 1996-9-2 15277 Contra Costa South side Mount Diablo, east end of Blackhawk Ridge. Comment
  JEPS112096  Prunus subcordata D. G. Kelch 2005-3-26 05 .99 Contra Costa Pinole Peak Fernandez Ranch. South side - road from Perreria Road to Pinole Peak Ridge 268 Comment
  RSA113975  Prunus subcordata Peter H. Raven, H. L Mason, R. Ornduff 1957-4-11 10626 Contra Costa Curry Canyon, four miles south of the Recreation Ground. Comment
  CAS-BOT-BC154628  Prunus subcordata Peter H. Raven; H. L. Mason; R. Ornduff; et al. 1957-4-11 10626 Contra Costa Curry Canyon 4.0 mi. s. of Recreation Ground 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
  JEPS111729  Pseudognaphalium beneolens D. G. Kelch 2004-7-16 04 .318 Contra Costa Martinez - South Pine St. Entrance to Rte 4 heading west 70 Comment
  UC2028511  Pseudognaphalium beneolens Barbara Ertter 1996-11-24 15414 Contra Costa Southwest side of Mount Diablo, Wall Point Road across Pine Ridge ca 1/2 airmiles ENE of Macedo Ranch Comment
  UCD35161  Pseudognaphalium beneolens Beecher Crampton 1950-7-29 624 Contra Costa Waste ground along Sante Fe R.R., 1 mile north of Richmond. Comment
  JEPS111702  Pseudognaphalium californicum D. G. Kelch 2004-4-26 04 .132 Contra Costa Point Pinole 8 Comment
  UC2013024  Pseudognaphalium californicum Barbara Ertter 1990-5-19 8994 Contra Costa Lafayette Ridge of Briones Regional Park N of Lafayette. Comment
  UC1618328  Pseudognaphalium luteoalbum Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10701 Contra Costa w end of island n Pittsburg (near confluence of Sacramento and San Joaquin river opposite Pittsburg Marina); Browns Island Comment
  UC1795643  Pseudognaphalium luteoalbum Barbara Ertter, Drew Hansen 1995-3-28 13938 Contra Costa Chevron oil refinery in northwest Richmond off of Castro St. edge of levees thru created bioremediation marsh south of Wildcat Creek. Comment
  UC2032810  Pseudognaphalium luteoalbum Doran, Andrew Scott 2012-3-20 680 Contra Costa Brooks island loading dock, North side of island. Comment
  CAS-BOT-BC357592  Pseudognaphalium stramineum John Thomas Howell 1925-11-7 1556 Contra Costa San Leandro Canyon, Oakland Hills Comment
  UC1584688  Pseudognaphalium thermale Jerry Powell Jul 14 1987-Jul 30 1987 1505 Contra Costa Point Molate Beach Point Molate Beach (chaparral and grassy meadow on bluffs above Bay edge) Comment
  SEINET3875499  Pseudotsuga menziesii James K. Detling 1963-3-21 40 Contra Costa Near Glorietta School, Orinda.; 0 30 Comment
  CDA9495  Psilocarphus brevissimus D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .219 Contra Costa Byron Airport. Comment
  UCD36027  Psilocarphus brevissimus Beecher Crampton 1949-6-10 472 Contra Costa city of Richmond. 16 Comment
  JEPS40518  Psilocarphus tenellus W. L. Jepson 1922-5-11 9635 Contra Costa n Berkeley Hills; North Berkeley Hills Comment
  UC691818  Psilocarphus tenellus Mary L. Bowerman 1931-4-11 702 Contra Costa Mouth of Pine Canyon Mount Diablo Comment
  UC694150  Psilocarphus tenellus H. L. Mason 1928-4-29 4425 Contra Costa Mt. Diablo Comment
  UC35752  Psilocarphus tenellus W. H. Brewer 1862-5-26 1165 Contra Costa canyon near Mount Diablo Comment
  UC694157  Psilocarphus tenellus Herbert L. Mason 1932-4-15 6926 Contra Costa summit of Road Moraga to Lafayette Comment
Read comments Oct 6 2006
  CHSC67885  Psilocarphus tenellus var. tenellus James D. Jokerst 1989-3-28 3064 Contra Costa NW of jct. Byron Hot Springs Rd. and Armstrong Rd. NE of Livermore. Comment
  RSA31229  Psilocarphus tenellus var. tenellus Joseph A. Ewan 1936-5-3 9497 Contra Costa Wildcat Creek near Orinda road bridge. Comment
  RSA448385  Ptelea baldwinii subsp. crenulata John Doyen, Glenn Gorelick 1966-4-22 s.n. Contra Costa Russelman Park. Mt. Diablo State Park. Comment
  CAS-BOT-BC148622  Ptelea crenulata A. D. E. Elmer 1903-5-1 4327 Contra Costa Mount Diablo Comment
  CAS-BOT-BC148627  Ptelea crenulata Alice Eastwood 1915-5-30 4440 Contra Costa Mount Diablo Comment
  CAS-BOT-BC148634  Ptelea crenulata Rimo Bacigalupi 1926-4-30 1354 Contra Costa Near summit of Mt. Diablo Comment
  JEPS40168  Ptelea crenulata H. L. Mason 1928-3-31 Contra Costa Mt. Diablo Comment
  SD70002  Ptelea crenulata Darley Howe 1968-5-20 Contra Costa Nortonville Comment
  SJSU5754  Ptelea crenulata C. O. Dudley 1966-5-1 103 Contra Costa Reliez Valley, Briones Hills, N of Lafayette 152 Comment
  SJSU758  Ptelea crenulata C. D. Duncan 1942-4-26 Contra Costa lower E slope, Mt Diablo Comment
  UC1277976  Ptelea crenulata B. Crampton 1957-7-9 4273 Contra Costa 2-3 mi nw Martinez (slopes above the Carquinez Straits) Comment
  UC30132  Ptelea crenulata W. C. Blasdale 1893-5-13 Contra Costa Summerville Comment
  UC571097  Ptelea crenulata R. Bacigalupi 1926-4-30 1354 Contra Costa near summit Mt. Diablo Comment
  UC579884  Ptelea crenulata Annetta Carter 1935-6-1 868 Contra Costa ridge on w side of peak Mount Diablo 1036 Comment
  UC85435  Ptelea crenulata Katharine Brandegee 1907-6-16 Contra Costa hills back of Antioch Comment
  SBBG3977  Ptelea crenulata J. M. Tucker 1941-8-28 383 Contra Costa Curry Cyn, 3 mi S of jct of Curry Cyn Rd with Clayton-Byron Rd Comment
  UC73566  Ptelea crenulata Milo S. Baker 1904-6-22 Contra Costa Mt. Diablo; above Walker's Comment
  UCD117073  Ptelea crenulata R. W. Lundh 1932-8-17 134 Contra Costa Marsh Creek. 381 Comment
  JEPS111935  Pteridium aquilinum A. G. Murdock 2004-4-30 244 Contra Costa Vaca Canyon On north side of road along creek 165 Comment
  UC1198069  Pterostegia drymarioides Joseph P. Tracy 1934-4-30 13191 Contra Costa near Lafayette 152 Comment
  UC692210  Pterostegia drymarioides Mary L. Bowerman 1931-3-29 617 Contra Costa e. end Cave Point Ridge; Mt. Diablo 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
  CAS-BOT-BC239827  Puccinellia simplex Niall McCarten; V. I. Dains 1986-6-1 03261200 9 Contra Costa (Highline reach 12-15) near Brushy Cr., empties into Clifton Ct. Forebay Comment
  JEPS95248  Quercus Steve Edwards 1995-10-20 Contra Costa Round Top, W flank Robert Sibley Volcanic Regional Preserve Comment
  CAS-BOT-BC104164  Quercus X morehus John Thomas Howell 1925-10-11 1503 Contra Costa Chaparral, Moraga Ridge, Oakland Hills Comment
  CDA20041  Quercus X morehus T. Young 2002-9-2 s.n. Contra Costa San Francisco Bay Area; Small stand of 5-6 trees in northern Orinda surrounded by Q. lobata and Q. agrifolia. 0 Comment
  RSA0026181  Quercus X morehus Barbara Ertter, Tony Morosco 1996-7-27 15038 Contra Costa North side Mount Diablo, Wasserman Trail below Cardinet Oaks Road. Comment
  UC691317  Quercus X morehus Mary L. Bowerman 1933-6-14 2278 Contra Costa Inner Black Hills, w of 1970 Mount Diablo Comment
  UC1135309  Quercus agrifolia R. W. Lundh 1932-8-17 132 Contra Costa 1 mi E of Round Valley 518 Comment
  UC691315  Quercus agrifolia Mary L. Bowerman 1931-9-27 1049 Contra Costa ne side North Peak; Mount Diablo Comment
  UCD17416  Quercus agrifolia E. Dean; with B. Ertter, J. M. Tucker, and K. Chaney 2000-9-13 652 Contra Costa California. Contra Costa County: City of El Sobrante; El Sobrante Ridge, upslope of the terminus of Heavenly Ridge Rd., south of junction of Heavenly Ridge Trail and Manzanita Trail, at end of branch off Manzanita trail, south-facing slope overlooking city of El Sobrante. 213 Comment
  UCD45040  Quercus agrifolia J. M Tucker 1946-3-14 1375 Contra Costa Small tree ca. 15 feet tall; sunny southeast-faicng slope, on border of redwood grove associated with Ceanothus thyrsiflorus and Baccharis; Redwood Peak, ca. 200 yards south of summit, Contra Costa County, California. Comment
  UCD45129  Quercus agrifolia John Thomas Howell 1950-7-5 26638 Contra Costa Small tree, Nortonville, Contra Costa Co. Comment
  UCSB16859  Quercus agrifolia L. Dempster Mar 1963 S.N. Contra Costa NEAR 15 EL TOYANAL ORINDA Comment
  CAS-BOT-BC62698  Quercus chrysolepis Mary L. Bowerman 1931-5-16 852 Contra Costa Mt. Diablo summit, south side Comment
  UCR247487  Quercus chrysolepis Dean Kelch 2011-5-4 11 .224 Contra Costa Central Coast, near Morgan Territory Regional Park, west of Morgan Territory Road 610 Comment
  OBI42731  Quercus chrysolepis Cathy Peterson 1971-11-6 4 Contra Costa Mount Diablo, south side, approx 10 yds from Rock City entrance 610 Comment
  CAS-BOT-BC86646  Quercus douglasii H. E. McMinn 1922-6-2 84 Contra Costa North slope of Mt. Diablo Comment
  CAS-BOT-BC86649  Quercus douglasii Joseph Andorfer Ewan 1933-10-15 8028 Contra Costa Mt. Diablo 1066 Comment
  RSA476582  Quercus douglasii Bonnie C. Templeton 1962-6-20 s.n. Contra Costa Mount Diablo Comment
  CAS-BOT-BC86122  Quercus dumosa Mary L. Bowerman 1932-1-23 1078 Contra Costa Mount Diablo. Knoll W of knoll between Sycamore Ridge and 1920 point Comment
  CDA29941  Quercus garryana D. G. Kelch 2009-11-8 9 .672 Contra Costa Carquinez Strait; 1 km W of Port Costa. 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
  CAS-BOT-BC94292  Quercus garryana Mary L. Bowerman 1935-11-30 3351 Contra Costa In draw SW of Gibraltar Rock, Fossil Ridge Comment
  JEPS111966  Quercus ilex D. G. Kelch 2005-5-13 05 .237 Contra Costa Martinez Martinez. South of oil refinery along Railroad tracks in fragment of habitat 28 Comment
  JEPS111963  Quercus kelloggii D. G. Kelch 2004-9-2 04 .330B Contra Costa Franklin Canyon - McHarry Ranch Rd. McHarry Ranch Road. 126 Comment
  UCSC008846  Quercus kelloggii Al Keuter 2014-5-23 AK 00 -096 Contra Costa Along Bear Creek Road at San Pablo Creek. 91 Comment
  UC2028550  Quercus kelloggii Barbara Ertter 1997-9-14 15813 Contra Costa Southwest side of Mount Diablo, Secret Trail at head of Pine Canyon Comment
  UC5607  Quercus kelloggii unknown 1800-1 Contra Costa Comment
  UC1543217  Quercus lobata Donald G. Nelson 1939-12-3 643 Contra Costa along hwy. near where Marsh Creek Hwy. comes into more open hill country Comment
  JEPS95240  Quercus parvula Stephen W. Edwards March 1994 Contra Costa Sobrante Ridge Regional Preserve Comment
  UC2070466  Quercus parvula var. shrevei Barbara Ertter 2000-9-2 17523 Contra Costa Sobrante Ridge Preserve in hills southeast of El Sobrante, Manzanita Trail near Heavenly Ridge Trail junction. Comment
  CAS-BOT-BC104717  Quercus wislizeni Le Roy Abrams 1910-10-8 4354 Contra Costa Mt. Diablo summit 1158 Comment
  UC1135852  Quercus wislizeni R. C. Wilson 1935-3-13 127 Contra Costa 1.5 mi w Cave Pt.; Mt. Diablo Quad. 563 Comment
  UC691291  Quercus wislizeni Mary L. Bowerman 1933-5-9 2052 Contra Costa Mountain House Canyon, n face Mount Diablo 670 Comment
  UC691310  Quercus wislizeni Mary L. Bowerman 1931-5-19 868 Contra Costa Donner Canyon trail Mount Diablo 274 Comment
  CAS-BOT-BC104709  Quercus wislizeni Mary L. Bowerman 1930-9-9 454 Contra Costa Mount Diablo. North Peak base, east side Comment
  CAS-BOT-BC104712  Quercus wislizeni Alice Eastwood 1921-8-6 11043 Contra Costa Mt. Hamilton Comment
  POM180792  Quercus wislizeni J. T. Howell 1930-6-15 5310 Contra Costa Summit of Grizzley Peak, Berkeley Hills Comment
  UC2028563  Quercus wislizeni Barbara Ertter with Mary Bowerman 1996-11-1 15406 Contra Costa North base of Mount Diablo, along Donner Creek between trailhead and cabin site. Comment
  UC691951  Ranunculus aquatilis Mary L. Bowerman 1935-6-21 3155 Contra Costa s Turtle Rock (winter pool e of main pond); Mount Diablo Comment
  UC691953  Ranunculus aquatilis Mary L. Bowerman 1931-4-4 662 Contra Costa pool w Turtle Rock; Mount Diablo Comment
  POM270021  Ranunculus aquatilis var. capillaceus Mary L. Bowerman 1933-3-18 1754 Contra Costa Pool W of Turtle Rock (can be seen from top of rock) covering a considerable area of the bottom of the dried up pool Comment
  UC480590  Ranunculus californicus Carl Meyer 1928-2-22 295 Contra Costa Mt. Diablo Comment
  POM268438  Ranunculus californicus Mary L. Bowerman 1931-2-22 521 Contra Costa Sycamore Canyon Comment
  UC2027988  Ranunculus canus Barbara Ertter 1998-5-3 16032 Contra Costa Pine Ridge summit of Wall Point Road at southwest base of Mount Diablo. Comment
  POM268449  Ranunculus canus var. laetus Lyman Benson 1935-3-16 6272 Contra Costa Mitchell Canyon near Clayton; Mt. Range: Mt. Diablo; Watershed: Walnut Creek. 244 Comment
  POM268451  Ranunculus canus var. laetus Lyman Benson 1935-3-16 6274 Contra Costa Mitchell Canyon near Clayton; Mt. Range: Mt. Diablo; Watershed: Walnut Creek. 244 Comment
  CDA922  Ranunculus hebecarpus D. G. Kelch 2006-5-4 6 .125 Contra Costa Carquinez Strait; Vaca Canyon, on North facing road cut/bank along Alhambra Valley Road. Comment
  UC1607964  Ranunculus hebecarpus Donald G. Nelson 1937-4-29 507 Contra Costa Road from Pinole south towards Alhambra Road Pinole Comment
  SEINET3816544 Image available Ranunculus hebecarpus Lewis S. Rose 1934-3-21 34071 Contra Costa Marsh Creek, 6 miles east of Clayton. Comment
  UC692124  Ranunculus hebecarpus Mary L. Bowerman 1935-4-12 2807 Contra Costa North Road immediately s section 33; Mount Diablo 182 Comment
  JEPS112941  Ranunculus lobbii Dean W. Taylor 2001-3-16 17610 Contra Costa eastern flank Mt. Diablo, Mount Diablo State Park, along Olympic Trail (fire road) about 0.25 road miles W from Marsh Creek Road (ca. 5 air miles South from Clayton) 298 Comment
  UC2043025  Ranunculus lobbii Barbara Ertter with David Gowen 2006-3-1 18665 Contra Costa Upper San Leandro Reservoir Watershed (EBMUD) south Moraga, shallow small pond along SE end of Rocky Ridge Road as it drops to King Canyon Road. Comment
  RSA721368  Ranunculus sceleratus Barbara J. Ertter 1995-7-11 14485 Contra Costa W side of Mt. Diablo SW of Walnut Creek, dense growth at lower end of Pine Pond. 183 Comment
  UC2028176  Raphanus raphanistrum Barbara Ertter 1998-5-3 16043 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. Comment
  POM181430  Raphanus sativus I. L. Wiggins 1930-4-18 4610 Contra Costa Jersey Island. 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
Read comments Apr 29 2013
  UC1784204  Rhamnus californica Ethel Crum 1930-9-29 858 Contra Costa Marsh Creek Road to Holt Comment
  JEPS41992  Rhamnus californica subsp. californica W. L. Jepson 1895-9-7 13977 Contra Costa Grizzly Peak Berkeley Hills Comment
  CDA9186  Rhamnus crocea Christopher Thayer 1995-6-5 s.n. Contra Costa Carquinez Strait; W of Pinole Peak. Comment
  UC420524  Rhamnus tomentella subsp. tomentella Milo S. Baker 1904-6-24 Contra Costa near Mt. Diablo summit; Mt. Diablo, Pine Creek Canyon Comment
  UC466053  Ribes Tracy J. Storer 1912-7-13 Contra Costa Mt. Diablo 914 Comment
  UC2031402  Ribes amarum Barbara Ertter with David Gowen and Steve Matson 2007-3-17 18788 Contra Costa Huckleberry Botanic Regional Preserve in East Bay Hills above Montclair, dog-leg of Skyline Regional Trail at junction with trail from Pinehurst Road at base of canyon of upper San Leandro Creek Comment
  POM181150  Ribes californicum J. T. Howell 1931-2-21 5730 Contra Costa Mt. Diablo. Comment
  SBBG28501  Ribes californicum E. Mulliken 1905-1-28 Contra Costa Wildcat Cyn, Berkeley Hills Comment
  CDA25524  Ribes californicum var. californicum D. G. Kelch, A. G. Murdock 2003-2-7 3 .036 Contra Costa Carquinez Strait Region; Franklin Canyon. Comment
  JEPS111984  Ribes californicum var. californicum D. G. Kelch 2004-3-5 04 .12 Contra Costa Sky Ranch Dutra Fire Road. Franklin Canyon 90 Comment
  UCSB26263  Ribes divaricatum var. pubiflorum Ketcham, A. 1968-3-25 Contra Costa South Park Drive at road to Boy's Camp; Tilden Regional Park Comment
  CAS-BOT-BC168921  Ribes malvaceum L. R. Abrams 1921-5-25 8060 Contra Costa Near summit Mt. Diablo Comment
  HSC45325  Ribes malvaceum J. P. Smith, J. O. Sawyer, Thomas W. Nelson 1978-2-18 9520 Contra Costa Mt. Diablo State Park, Juniper Campground along Gate Rd. Comment
  SBBG26906  Ribes malvaceum A. Eastwood, J. T. Howell 1936-4-19 Contra Costa Nortonville Comment
  RSA0021639  Ribes malvaceum Lyman Benson 1935-3-16 6269 Contra Costa Mt. Diablo. Walnut Creek watershed. [Label indicates Alameda Co., but Mt. Diablo is in Contra Costa Co.] 915 Comment
  JEPS97608  Ribes menziesii R. D. Stone 1981-3-23 345 Contra Costa Huckleberry Trail Oakland Hills, near Alameda-Contra Costa county line (NE of intersection of Skyline Blvd. and Snake Rd.) 396 Comment
  UC692236  Ribes menziesii Mary L. Bowerman 1931-4-19 739 Contra Costa Deer Flat, near spring by trail at upper end of flat Mount Diablo Comment
  UC692559  Ribes menziesii Mary L. Bowerman 1931-4-25 780 Contra Costa summit Meridian Peak (n side); Mount Diablo Comment
  CAS-BOT-BC206017  Ribes menziesii John Thomas Howell 1980-4-10 53367 Contra Costa Morgan Territory east of Mt. Diablo Comment
  CAS-BOT-BC362966  Rigiopappus leptocladus M. K. Curran 1884-5-1 36 Contra Costa Antioch Comment
  UC1598928  Rigiopappus leptocladus Mrs. K. Curran May 1883 Contra Costa Antioch Comment
  UC697151  Rigiopappus leptocladus Mary L. Bowerman 1931-4-4 669 Contra Costa w Turtle Rock; Mount Diablo Comment
  UC697163  Rigiopappus leptocladus Mary L. Bowerman 1933-5-8 2016 Contra Costa n side near crest Fossil Ridge; Mount Diablo, n side near crest Fossil Ridge Comment
  UC24540  Romanzoffia californica H. N. Bolander 1866-1 6280 Contra Costa Mt. Diablo 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
  SEINET10543521  Rosa californica Walter H. Lewis, Barbara J. Ertter 2005-2-8 Lewis 15910 Contra Costa Marsh Creek Rd at Power Line Crossover, north foot of Mt. Diablo by Marsh Creek; large colony along creek, open live oak woods. Comment
  UC1789172  Rosa eglanteria Barbara Ertter 2001-11-3 17812 Contra Costa Tilden Regional Park, Selby Trail ca. 1/4 miles north of Lake Anza Comment
  CAS-BOT-BC148106  Rosa gymnocarpa Paul F. Covel 1936-4-19 209 Contra Costa Las Trampas Canyon Comment
  UC555497  Rosa gymnocarpa Herbert L. Mason 1924-11-23 1172 Contra Costa Cashion Creek Las Trampas Ridge Comment
  UC691148  Rosa gymnocarpa Mary L. Bowerman 1931-5-21 887 Contra Costa Curry-Cave Point trail Mount Diablo (where streambed forks and on w fork) 441 Comment
  UCD113849  Rosa gymnocarpa Collector Unknown Date Unknown 61 Contra Costa Near top of ridge to W of Central Franklin Canyon. 228 Comment
  UCD113875  Rosa gymnocarpa M. Wiesendanger 1926-4-1 1474 Contra Costa Berkeley Hills. Comment
  CAS-BOT-BC158774  Rubus ursinus Roxana S. Ferris 1924-4-13 4079 Contra Costa Mitchell Canyon, Mt. Diablo Comment
  JEPS75495  Rumex acetosella P. F. Yorks 1976-5-31 510 Contra Costa ca 1.4 km s Bear Creek Road (on Hampton Road in Hampton Road Natural Reserve, n of Briones Reservoir); Hampton Road Natural Reserve 180 Comment
  UC1584691  Rumex acetosella Jerry Powell 1987-7-14 1508 Contra Costa Point Molate Beach 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
  CDA29534  Rumex pulcher D. G. Kelch, Troy MacGregor 2009-5-1 9 .281 Contra Costa Carquinez Strait; Fernandez Ranch in valley bottom along Christie Rd. Comment
  JEPS112017  Rumex pulcher Dean G. Kelch and Andrew G. Murdock 2004-5-28 AGM 267 Contra Costa Refugio Valley. 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
  CDA15232  Rumex salicifolius var. crassus G. F. Hrusa, D. Crowe 1998-5-8 14361 Contra Costa Sacramento Delta; E end of Dow Chemical property at Pittsburg. Comment
  UC692158  Rumex salicifolius var. salicifolius Mary L. Bowerman 1938-6-14 3680 Contra Costa Canyon Nook Mount Diablo 670 Comment
  UC692168  Rumex salicifolius var. salicifolius Mary L. Bowerman 1930-9-27 465 Contra Costa 2 mi w by road Mount Diablo west entrance (w base Mount Diablo); Mount Diablo Comment
  JEPS100112  Rupertia physodes A. Langston 2003-6-12 AL 41 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  UC2029094  Rupertia physodes Barbara Ertter 1990-5-19 9000 Contra Costa Lafayette Ridge of Briones Regional Park N of Lafayette; along Mariposa ridge road S of Russell Peak, at edge of oaks and chaparral. Comment
  UC2028200  Sagina apetala Barbara Ertter 1998-5-3 16052 Contra Costa Turtle Rock ponds along Barbeque Terrace road in upper Pine Canyon, southwest flank of Mount Diablo. Comment
  UC13629  Sagina decumbens subsp. occidentalis J. P. Tracy 1900-3-24 610 Contra Costa low fields near Stege; San Francisco Bay Region Comment
  CAS-BOT-BC129921  Salix bonplandiana Barrett Anderson 1987-4-29 3476 Contra Costa Pinole Creek in Pinole Valley near Castro Ranch Road. Pinole dam site for EBMUD. 125 Comment
  CAS-BOT-BC129917  Salix bonplandiana Mary L. Bowerman 1931-3-1 529 Contra Costa Mount Diablo - near North Entrance Comment
  POM181455  Salix exigua I. L. Wiggins 1930-4-18 4587 Contra Costa Jersey Island. Comment
  UC650583  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
  UCD35153  Salix hindsiana Beecher Crampton 1950-7-4 600 Contra Costa Railroad embankment, Richmond. Comment
  JEPS111537  Salix laevigata D. G. Kelch 2005-5-6 05 .221 Contra Costa Franklin Canyon; East of Christie Road. South of Route 4. Comment
  JEPS112255  Salix laevigata D. G. Kelch 2005-5-13 05 .244 Contra Costa Martinez South of oil refinery along Railroad tracks Comment
  POM167733  Salix laevigata H. P. Chandler 1901-3-22 859 Contra Costa Pacheco. Comment
  POM181438  Salix laevigata I. L. Wiggins 1930-4-18 4603 Contra Costa Jersey Island. 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
  UC437380  Salix laevigata J. Burtt Davy 1895-4-13 1005 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
  RSA0030832  Salix laevigata Walter C. Blasdale 1896-2-29 s.n. Contra Costa Clayton. Comment
  CDA39557  Salix lasiolepis D. G. Kelch 2005-3-11 5 .038 Contra Costa Carquinez Strait Region; Martinez - Franklin Hills. Carquinez Shoreline EBRP. West of Martinez High School. Comment
  JEPS112248  Salix lasiolepis A. G. Murdock 2004-2-12 208 Contra Costa Franklin Canyon; Along Franklin Canypn east of McHarry Ranch Road 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
  OBI70551  Salix lasiolepis D. G. Kelch, D. A. Weinstein 2008-4-25 8 .087 Contra Costa Alvarado Park (W end of Wildcat Canyon Park) 122 Comment
  RSA300609  Salix lasiolepis Mary L. Bowerman 1932-8-27 1519 Contra Costa Spring S of Turtle Rock. Mt. 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
  CAS-BOT-BC129598  Salix lasiolepis var. lasiolepis Mary L. Bowerman 1932-11-19 1650 Contra Costa Pioneer Camp: along stream from the spring - Mount Diablo Comment
  UC1950181  Salsola soda Barbara Ertter with Elizabeth Neese 1988-10-15 7980 Contra Costa W of I-580 in El Cerrito, W side along Rydin Road N of Central Avenue Comment
  CAS-BOT-BC180753  Salsola tragus Walter Knight; Joanne Dean 1978-8-14 3114 Contra Costa Browns Island Comment
  UC32581  Salvia carduacea Chesnut and Drew 1889-4-18 Contra Costa Antioch Comment
  JEPS62659  Salvia columbariae W. L. Jepson 1921-11-19 9519 Contra Costa s slope Mt. Diablo Comment
  SBBG29850  Salvia columbariae L. S. Rose 1935-5-16 Contra Costa Mt Diablo Comment
  JEPS108627  Salvia columbariae R. Raiche 1981-8-3 10068 Contra Costa S slope of saddle area, Mount Diablo 822 Comment
  JEPS120273  Salvia leucophylla Barbara Ertter with David Gowen 2012-6-9 21026 Contra Costa southeast of junction of Big Springs Trail and Seaview Trail, southeastern Tilden Park in Berkeley Hills Comment
Read comments Mar 22 2018
  JEPS49757  Salvia mellifera Rimo Bacigalupi and Alice Howard and Paul Hutchison 1967-3-29 9219 Contra Costa 0.5 mi se head of Bolinger Creek (on w slope of Las Trampas Ridge, in Bolinger Creek drainage); Las Trampas Ridge, Bolinger Creek 390 Comment
  UC75018  Salvia mellifera unknown 1903-4-28 2945 Contra Costa Mitchell Canyon; Mt. Diablo Comment
  UC2029120  Salvia spathacea Barbara Ertter 2000-10-26 17549 Contra Costa west side Mount Diablo, Stage Road in lower Pine Canyon, on top of steep cut on west side of road opposite Castle Rock. Comment
  UCD164883  Sambucus nigra subsp. caerulea Henry House 1995-5-20 1995- 12 Contra Costa Adjacent to Walnut Blvd., approximately 1.25 km south of Marsh Creek Road. 30 Comment
  CAS-BOT-BC223247  Sanicula bipinnata Alice Eastwood; John Thomas Howell 1936-4-19 s.n. Contra Costa Nortonville Comment
  JEPS111610  Sanicula bipinnata D. G. Kelch 2003-4-3 03 .373 Contra Costa Martinez - West: Ozol Rock and Scenic Drive West Martinez. 118 Comment
  UC692321  Sanicula bipinnata Mary L. Bowerman 1931-3-14 570 Contra Costa Mount Diablo, Windy Point Mount Diablo; , Windy Point Comment
  UCD32382  Sanicula bipinnata Beecher Crampton 1950-4-22 526 Contra Costa above Judsonville, above old Empire Mine to south around top of hills. 182 Comment
  CDA38533  Sanicula bipinnatifida D. G. Kelch 2005-5-6 5 .227 Contra Costa Carquinez Strait Region; Franklin Canyon. East of Christie Road. South of Route 4. Comment
  RSA720813  Sanicula bipinnatifida Barbara Ertter, Dale Sanders, Dan Norris 1994-3-26 12335 Contra Costa Peyton Hill east of I-680 east of Martinez, south of Waterfront Road, southeast side of hill. 30 Comment
  UC2028102  Sanicula bipinnatifida Barbara Ertter with Tony Morosco 1998-4-12 15981 Contra Costa Base of Mount Olympia on north side of Mount Diablo. Comment
  JEPS100130  Sanicula crassicaulis G. Smick 2003-3-3 GAS 62 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  RSA771181  Sanicula saxatilis Barbara Ertter, Brad Olson, Lynne Hosley 1991-4-7 9728 Contra Costa Eagle Peak on Mount Diablo, scree slopes on east and southwest side, esp. in drainages Comment
  UC480613  Sanicula saxatilis Carl Meyer 1928-2-22 281 Contra Costa Mount Diablo Comment
  UC691879  Sanicula saxatilis Mary L. Bowerman 1931-4-25 768 Contra Costa Mount Diablo summit, little northwest of house Mount Diablo Comment
  UC1949240  Sanicula tuberosa Barbara Ertter with Michelle Seidl 1992-3-14 10914 Contra Costa Morgan Territory Regional Preserve east of Mount Diablo; along Blue Oak Trail Comment
  UC1949225  Scandix pecten-veneris Barbara Ertter 1991-6-1 10072 Contra Costa Las Trampas Regional Wilderness in hills W of Danville; Rocky Ridge Trail ca 1 mi from parking lot Comment
  JEPS78622  Schoenoplectus acutus var. occidentalis Walter Knight, L. R. Heckard and Bert Johnson 1978-9-28 3285 Contra Costa Botany Cove Browns Island, Botany Cove Comment
  CAS-BOT-BC111377  Schoenoplectus acutus var. occidentalis John Thomas Howell; Gordon H. True 1972-6-29 48937 Contra Costa Wet soil or shallow water along ditches on Bryon Hot Springs Road SE of Byron. Comment
  SEINET192303  Scirpus acutus O. Woggoms, Woggoms 1930-4-18 4589 Contra Costa Jersey Island Contra Costa Co. 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
  CDA15264  Scirpus maritimus G. F. Hrusa, D. Crowe 1998-5-8 14395 Contra Costa Sacramento Delta; E end of Dow Chemical property in Pittsburg. Comment
  CDA39151  Scirpus maritimus A. G. Murdock 2004-5-28 300 Contra Costa Carquinez Strait; Luzon. Comment
  JEPS111898  Scirpus microcarpus D. G. Kelch 2004-7-9 04 .308 Contra Costa Arroyo del Hambre Alhambra Creek, Martinez, Near Muir gravesite. 60 Comment
  UC692194  Scirpus microcarpus Mary L. Bowerman 1942-10-4 3851 Contra Costa Mount Diablo Mount Diablo (Russelman Park Road) 243 Comment
  UC691603  Scrophularia californica Mary L. Bowerman 1933-4-15 1855 Contra Costa canyon s of Arroyo del Cerro Mt Diablo Comment
  PASA1037  Scrophularia californica Annetta Carter 1929-3-31 Contra Costa Near Clayton. Hills north of Mt. Diablo Comment
  JEPS100143  Scrophularia californica subsp. californica G. Smick 2003-4-3 GAS 122 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site 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
  SEINET3153355  Scutellaria tuberosa L. S. Rose 1940-4-30 40250 Contra Costa Marsh Creek, 4 mi. E of Clayton 91 Comment
  UC691406  Scutellaria tuberosa Mary L. Bowerman 1931-4-25 771 Contra Costa summit of Mount Diablo (at the junction of the one-way roads) 1143 Comment
  UC195562  Senecio aphanactis E. L. Greene 1888-3-25 Contra Costa Byron Comment
  JEPS111511  Senecio sylvaticus D. G. Kelch 2005-5-13 05 .274 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 66 Comment
  JEPS37191  Senecio vulgaris W. L. Jepson 1921-5-22 9200 Contra Costa Mt. Diablo Comment
  UC407393  Senecio vulgaris Ira L. Wiggins 1930-4-18 4597 Contra Costa n end Jersey Island; n end Jersey Island Comment
  JEPS111875  Sequoia sempervirens D. G. Kelch 2004-3-5 04 .2 Contra Costa Martinez - Rankin Open Space Rankin Park, Martinez, Contra Costa County, CA. Sapling waif to 2 ms. In shade of Canyon. Probably seeded from nearby horticultural planting. 27 Comment
  JEPS88722  Sequoia sempervirens W. L. Jepson 1894-10-1 Contra Costa Redwood Peak Oakland Hills, Redwood Peak Comment
  UC1050201  Sequoia sempervirens N. Floy Bracelin 1942-12-13 1712 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1134197  Sequoia sempervirens R. W. Lundh 1933-3-1 205 Contra Costa 1/2 mi sw Redwood Peak; Concord Quadrangle Comment
  SEINET3876309 Image available Sequoia sempervirens James K. Detling 1963-2-15 7 Contra Costa Top of Flicker Ridge near Moraga.; 0 Comment
  CDA38611  Sesbania punicea R. Fonseca 2012-8-14 PDR# 1641171 Contra Costa Pittsburg; Columbia Street near East 11th Street. 0 Comment
  UC2028515  Setaria pumila Barbara Ertter 1996-11-24 15420 Contra Costa West side of Mount Diablo, upstream from Pine Pond along Stage Road in Pine Canyon, floodplain at junction with Dusty Road Comment
  RSA0029367  Setaria viridis Barbara Ertter, Mary Bowerman, Lisa Schultheis 1996-7-5 14921 Contra Costa Northwest base of Mount Diablo, access to Foothills Regional Park from North Gate Road along Little Pine Creek. 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
  JEPS127099  Sherardia arvensis Lowell Ahart, Josephine Guardino 2016-4-19 20802 Contra Costa 1.8 miles (air) northwest of Los Vaqueros Reservoir Marina, 2.1 miles (air) southwest of Los Vaqueros Reservoir Dam, approximately 25 miles (air) southwest of Stockton. Undesignated section of Canada de Los Vaqueros Land Grant, Byron Hot Spring USGS 7.5' Quad. Comment
  UC1795725  Sherardia arvensis Barbara Ertter, Mary Bowerman, Lisa Schultheis 1995-3-31 13941 Contra Costa Mount Diablo State Park, lower end of Mitchell Canyon south of Clayton, open oak woodland/grassland open flat area on east side of stream not far from trail head. 182 Comment
  UC692614  Sidalcea malviflora subsp. laciniata Mary L. Bowerman 1933-4-22 1880 Contra Costa opposite Heather Farm (near the sulphur spring, Shell Ridge where the highway crosses; meadow); Mount Diablo, Shell ridge, oppos Heather Farm Comment
  POM300647  Sidalcea malviflora subsp. malviflora Mary L. Bowerman 1933-4-22 1880 Contra Costa Shell Ridge where the highway crosses; Meadow (opposite Heather Farm), near the sulphur spring. Comment
  RSA721276  Sidalcea malviflora subsp. malviflora Barbara Ertter, Gary Schoolcraft 1996-4-7 14568 Contra Costa Point San Pablo inwest Richard. crest ot road to yacht harbor Comment
  CDA39044  Silene gallica D. G. Kelch 2011-6-5 11 .572 Contra Costa Carquinez Strait; South of Crockett, south of Cummings Skyway. Comment
  UC692534  Silene verecunda subsp. platyota Mary L. Bowerman 1930-6-7 278 Contra Costa Mount Diablo Comment
  CAS-BOT-BC364795  Silybum marianum Walter Knight; Bob Doyle; Wayne Roderick; Steve Edwards 1978-9-19 3252 Contra Costa Browns Island. South Landing Comment
  CDA23556  Sinapis arvensis D. G. Kelch 2008-3-3 8 .028 Contra Costa Carquinez Strait; Crockett. Under Zampa (Carquinez) Bridge. Comment
  JEPS100011  Sinapis arvensis G. Smick 2003-4-8 GAS 131 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CAS-BOT-BC74936  Sinapis arvensis Mary L. Bowerman 1938-5-25 3634 Contra Costa Mount Diablo. North Road 2 miles from North Gate. 182 Comment
  CAS-BOT-BC74939  Sinapis arvensis Walter Knight 1978-5-1 s.n. Contra Costa Contra Loma Regional Park, 6 miles south of San Joaquin River. 68 Comment
  UC2028152  Sinapis arvensis Barbara Ertter 1998-4-4 15959 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UCD115408  Sinapis arvensis Morris Halperin 1929-4-21 s.n. Contra Costa Franklin Canon. Comment
  JEPS100079  Sisymbrium officinale A. Langston 2003-6-19 AL 48 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CDA37907  Solanum americanum D. G. Kelch, Mike Perlmutter 2011-9-23 11 .762 Contra Costa Antioch. Dow Wetlands. Comment
  JEPS112310  Solanum americanum D. G. Kelch 2004-5-2 04 .163 Contra Costa Crockett - Edwards Canyon 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
  UC1050776  Solanum lanceolatum N. Floy Bracelin 1942-6-21 2149 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley Comment
  UC2031456  Solanum umbelliferum Barbara Ertter with David Gowen 2014-4-9 21708 Contra Costa West end of Green Ranch Road southwest of Mount Diablo summit Comment
  UC536676  Solanum umbelliferum Herbert L. Mason 1935-8-23 Contra Costa Cashion Canyon, Saint Mary's College Cashion Canyon; , Saint Mary's College Comment
  CAS-BOT-BC156306  Solanum umbelliferum anonymous 1900-3-26 s.n. Contra Costa Oakley. 6 m. E. of Antioch Comment
  RSA181413  Solanum umbelliferum James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. Comment
  SEINET7262189 Image available Solanum umbelliferum J. T. Howell 1933-5-14 11291 Contra Costa E of St. Mary's College Comment
  UC200706  Solanum umbelliferum Katharine Brandegee 1907-6-16 Contra Costa between Antioch and Marsh Creek Comment
  UCSB8611  Solanum umbelliferum Kamb, Peter; Chisaki, Francia 1950-3-18 Contra Costa Black Hills, S. of Mt. Diablo, on road from Danville to Mt. Diablo 365 Comment
  UCD163099  Solidago velutina subsp. californica Robert E. Preston 2014-5-28 2966 Contra Costa Morgan Territory, 3 mi SW of Los Vaqueros Reservoir. 290 Comment
  CAS-BOT-BC365801  Soliva sessilis Mary L. Bowerman 1931-4-11 689 Contra Costa Mount Diablo. Pine Canyon 121 Comment
  CHSC23344  Sonchus oleraceus Willis Ball 1975-3-2 468 Contra Costa Contra Loma Regional Park. In area #5. On the w side of a hill in area #5 ca. 10 yds. e of water on e side of lake. 32 Comment
  CAS-BOT-BC374592  Sonchus oleraceus Ira L. Wiggins 1930-4-18 4608 Contra Costa Jersey Island Comment
  CAS-BOT-BC374741  Sonchus oleraceus Walter Knight 1965-3-1 s.n. Contra Costa Antioch dunes Comment
  UCD146721  Sonchus tenerrimus G. F. Hrusa; D. Crowe 1998-5-8 14376 Contra Costa Sacramento-San Joaquin River Delta. On Dow Chemical property at Pittsburg. Adjacent to shore of San Joaquin River. 2 Comment
  UCD92659  Sorghum halepense Beecher Crampton 1970-3-10 8540 Contra Costa Vasco Road S of Brentwood. Comment
  UC1795889  Spartina densiflora Barbara Ertter, Rich Rabeler 1994-6-18 12835 Contra Costa Pt. Pinole Regional Shoreline at north end of Richmond; beach on North side Whittell Marsh. Comment
  CAS-BOT-BC236611  Spartina foliosa John Thomas Howell 1932-10-8 10793 Contra Costa Mouth of Rodeo Creek Comment
  CDA42411  Spartium junceum D. G. Kelch, Vince Guise 2012-7-26 12 .237 Contra Costa Wildcat Canyon Park, Alvarado Unit. Comment
  JEPS111779  Spergula arvensis A. G. Murdock 2004-3-5 214 Contra Costa Martinez - Rankin Open Space Along fire road at north end of park 80 Comment
  UC1818861  Spergularia bocconi Barbara Ertter, Kristin Ertter 1995-7-11 14468 Contra Costa Diablo Foothills Regional Park, dried road bed at base of east-facing cliff. 121 Comment
  CHSC23224  Spergularia macrotheca Carol G. Getzinger 1964-4-26 50 Contra Costa Near San Francisco Bay, Richmond, at the University of California Richmond Field Station; in front of Building 128; field. 4 Comment
  OBI17382  Spergularia macrotheca Robert F. Hoover 1967-4-28 10514 Contra Costa Byron Hot Springs Comment
  SEINET8728586 Image available Spergularia macrotheca Leo Koch 1940-1 1001 Contra Costa Two miles south of San Rafael ferry dock Comment
  UC2070557  Spergularia macrotheca var. leucantha Barbara Ertter with Brad Olson et al. 2000-6-2 17302 Contra Costa Brushy Peak Regional Preserve NE of Livermore. Comment
  CDA9448  Spergularia macrotheca var. longistyla D. G. Kelch, Michael Park, Abigail Moore 2007-5-1 7 .226 Contra Costa Byron Airport. Comment
  RSA518738  Spergularia macrotheca var. longistyla Barbara Ertter 1989-4-5 8113 Contra Costa West and adjacent to Clifton Court Forebay, 15 air miles SW of Stockton. 0 Comment
  CAS-BOT-BC390742  Spergularia marina John Thomas Howell; Gordon H. True 1972-6-29 48914 Contra Costa On Byron Hot Springs Road southeast of Byron Comment
  RSA0098553  Spergularia marina J. M. Tucker 1963-4-12 3687 Contra Costa On west side of Holey Road, 3 miles southeast of Byron. Comment
  RSA0098705  Spergularia villosa William J. Ferlatte, L. Maynard Moe 1970-4-27 1258 Contra Costa San Francisco Bay, Red Rock Island; northwest side. 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
  UC1619953  Stachys albens Barbara Ertter, Dianne Lake, Brad Olson, Lynne Hosley, Amy Hiss 1991-8-18 10703 Contra Costa n. Pittsburg (in center of w. end of Browns Isl., near confluence of Sacramento & San Joaquin rivers opposite Pittsburg Marina); Browns Isl. Comment
  CDA33902  Stachys pycnantha Swan/Fonseca 2008-9-11 PDR# 1454523 Contra Costa Concord; Pine Creek 0 Comment
  UC2055622  Stachys pycnantha Joseph Andorfer Ewan 1933-10-15 8035 Contra Costa SW slope Mt. Diablo. 1066 Comment
  UC2028208  Stebbinsoseris heterocarpa Barbara Ertter 1998-5-3 16076 Contra Costa Wall Point Ridge on southwest flank of Mount Diablo, near Wall Point. Comment
  JEPS111782  Stellaria media D. G. Kelch 2003-3-21 03 .58 Contra Costa Martinez - West: Ozol Rock and Scenic Drive 40 Comment
  CAS-BOT-BC386943  Stellaria media Ira L. Wiggins 1930-4-18 4598 Contra Costa N. end of Jersey Island 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
  UC606744  Stellaria nitens Edward Lee 1936-4-19 1969 Contra Costa ne corner Red Rock; San Francisco Bay Comment
  UC692302  Stellaria nitens Mary L. Bowerman 1931-3-21 603 Contra Costa e end Fossil Ridge; Mount Diablo Comment
  CDA33818  Stellaria nitens D. G. Kelch, Abigail Moore, Michael Park, Troy 2010-5-15 10 .114 Contra Costa Mt. Diablo. Trail from Prospector s Gap to Lower Summit parking lot. 0 Comment
  UC1328148  Stellaria nitens Olive Dyer 1937-4-18 290 Contra Costa abandoned road up Madrone Canyon tributary (Wildcat Canyon); Wildcat Canyon Comment
  UCD33149  Stenotaphrum secundatum Beecher Crampton 1966-10-18 7817 Contra Costa Contra Costa County, Kensington, Berkeley Hills Blake Garden, UC Berkeley Dept. of landscape architecture. Comment
  UC2031444  Stephanomeria elata Barbara Ertter with Brad Olson 1991-10-13 10856 Contra Costa SW corner of Point Richmond Comment
  UC2028250  Stephanomeria elata Barbara Ertter, Mary Bowerman, Lisa Schultheis 1998-8-21 16399 Contra Costa South side of Mount Diablo, South Gate Road 0.8 miles below entry kiosk. Comment
  RSA0029779  Stephanomeria virgata subsp. pleurocarpa Barbara Ertter 2000-7-29 17439 Contra Costa Donner Basin on north side of Mount Diablo, opening on lower end of Middle Trail between Meridian Ridge Road and first stream crossing. 366 Comment
  UC2070661  Stipa lepida Barbara Ertter 2002-5-11 17847 a Contra Costa Southwest base of Mount Diablo, lower end of Summit Trail in Dan Cook Canyon ca. half mile from South Gate Road. Comment
  SEINET10926660  Stipa pulchra Frank W. Gould 1941-4-20 Gould 1281 Contra Costa Coastal bluffs near Richmond, associated with Melica californica. Comment
  UC630661  Streptanthus albidus subsp. peramoenus John L. Morrison and Lincoln Constance 1938-5-5 3030 Contra Costa steep sw slope 2 mi outside N. entrance to Mt. Diablo State Park Comment
  SEINET3149300  Streptanthus glandulosus M. S. Baker 1904-6-24 sn Contra Costa Mt. Diablo, halfway to Summit Comment
  CAS-BOT-BC87097  Streptanthus glandulosus subsp. glandulosus John Thomas Howell 1942-5-24 16965 Contra Costa Near Deer Flat, Mount Diablo. Comment
  UC2028978  Streptanthus glandulosus subsp. glandulosus Barbara Ertter 2000-5-14 17020 Contra Costa Donner Basin on north side of Mount Diablo, switchbacks on Cardinet Oaks Road. Comment
  RSA26397  Streptanthus hispidus J. T. Howell 1941-4-6 s.n. Contra Costa Ridge east of Deer Park, Mt. Diablo Comment
  UC338175  Streptanthus tortuosus unknown Contra Costa Mount Diablo Comment
Read comments Jul 6 2020
  RSA0027710  Stuckenia pectinata Barbara Ertter, Chris Thayer 1996-10-25 15371 Contra Costa Northwest flank of Mount Diablo. Tick Pond at arc of Falcon Road between North Gate Road and Castle Rock. 183 Comment
  UC2028416  Stuckenia striata Barbara Ertter with Brad Olson, Dianne Lake, Lynne Hosley and A. Youngson 1991-10-20 10866 Contra Costa Dow Wetlands Preserve, just W of Antioch marina Comment
  JEPS116497  Stylocline gnaphaloides J. Greenhouse with John Game 2008-5-26 5128 Contra Costa Lime Ridge Open Space, Paradise Canyon Trail above subdivision Comment
  UC88443  Stylocline gnaphaloides Miss Alice Eastwood 1893-5-5 Contra Costa Brentwood Comment
  JEPS77536  Stylomecon heterophylla Margaret Ely 1978-5-3 Contra Costa n side of Mount Diablo, along Back Creek Back Creek; Mount Diablo, Back Creek 304 Comment
  RSA181407  Stylomecon heterophylla James I. McMurphy 1910-4-9 s.n. Contra Costa Antioch. 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
  OBI9066  Styrax redivivus Neil Havlik 1968-5-19 200 Contra Costa In cultivation, Tilden Botanical Garden, Charles Lee Tilden Regional Park, E of Berkeley Comment
  CAS-BOT-BC269558  Symphoricarpos albus var. laevigatus Mary L. Bowerman 1930-8-24 419 Contra Costa Mount Diablo. Mitchell Canyon, little above end of road Comment
  JEPS13659  Symphoricarpos mollis H. H. Haworth 1917-5-3 Contra Costa Redwood Peak Comment
  UC691622  Symphoricarpos mollis Mary L. Bowerman 1933-5-21 2159 Contra Costa ridge between two forks Sulphur Springs Canyon; Mount Diablo 426 Comment
  UC2046323  Symphyotrichum lanceolatum var. hesperium Barbara Ertter 2000-9-2 17520 Contra Costa Sobrante Ridge Preserve in hills southeast of El Sobrante, north of trailhead from Heavenly Ridge entrance. Comment
  UC1594169  Symphyotrichum lentum Jerry Powell 1991-8-15 1613 Contra Costa Antioch National Wildlife Refuge Comment
  UCD150915  Symphyotrichum lentum James A. Neilson Jr. 1972-10-1 s.n. Contra Costa Walnut Creek drainage. Elevation estimated using Google Earth by label maker. 0 Comment
  UCD163492  Symphyotrichum lentum D. Slakey; CNPS Volunteers 2015-9-12 225 Contra Costa Browns Island, northern part of Crooked Slough. 0 Comment
  UC1594187  Symphyotrichum subspicatum Jerry Powell 1992-5-20 1646 Contra Costa Richmond Field Station Comment
  UCD159500  Symphyotrichum subulatum var. parviflorum D. S. Park 2010-9-11 250 -1 Contra Costa Waterfront Rd. Growing along roadside. Disturbed. Wet. 5 Comment
  CAS-BOT-BC98330  Symphyotrichum subulatum var. parviflorum Walter Knight 1978-7-1 3107 Contra Costa Martinez waterfront, near mouth of Alhambra Creek Comment
  CHSC75158  Tanacetum parthenium Roger Thom 1987-5-24 14 Contra Costa 3354 Johnson Rd., Lafayette. 167 Comment
  UC2028177  Taraxacum laevigatum Barbara Ertter 1998-5-3 16042 Contra Costa Pine Canyon/Stage Road upstream from Dusty Road junction, southwest flank of Mount Diablo. Comment
  CDA37268  Taraxia ovata D. G. Kelch 2011-3-31 11 .068 Contra Costa Carquinez Strait Region; Richmond, near Point Pinole Regional Park. Comment
  UC21430  Tauschia hartwegii Edw. L. Greene 1892-6-20 Contra Costa Mt. Diablo Comment
  UC333731  Tauschia hartwegii unknown Contra Costa Martinez Comment
  UC691419  Tauschia hartwegii Mary L. Bowerman 1933-4-26 1936 Contra Costa North Peak Mount Diablo (ridge running se from the peak); , , ridge running se from peak 518 Comment
  CAS-BOT-BC447423  Tellima grandiflora Elsie Zeile 1909-4-18 s.n. Contra Costa Redwood Peak Comment
  UC2032805 Image available Tetragonia tetragonoides Doran, Andrew Scott 2012-3-20 675 Contra Costa Brooks island loading dock, North side of island. Comment
  UC35391  Tetrapteron graciliflorum W. C. Blasdale Mar. 1900 Contra Costa San Pablo Comment
  UC20473  Tetrapteron graciliflorum W. H. Brewer 1109 Contra Costa n Kirker Pass Comment
  UC1050827  Thalictrum dipterocarpum N. Floy Bracelin 1942-6-29 2129 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  CAS-BOT-BC88252  Thysanocarpus curvipes John Thomas Howell 1933-5-14 11274 Contra Costa Hills east of Saint Mary's College. Comment
  CAS-BOT-BC88257  Thysanocarpus curvipes T. S. Brandegee May. 18. s.n. Contra Costa Antioch. Comment
  JEPS111849  Thysanocarpus curvipes A. G. Murdock 2003-2-21 69 Contra Costa Mt. Wanda - Martinez; northeastern area of Mount Wanda property 115 Comment
  UC14311  Thysanocarpus curvipes Chestnut and Drew 1889-4-17 Contra Costa Summerville Comment
  UC402567  Thysanocarpus curvipes H. P. Chandler 1900-3-23 Contra Costa Fish Ranch Road; Region of Mount Diablo, Fish Ranch Road Comment
  UC691061  Thysanocarpus curvipes Mary L. Bowerman 1933-5-8 2032 Contra Costa flat n of Rock City camp ground Mount Diablo; , n of Rock City camp ground Comment
  UC691144  Thysanocarpus curvipes Mary L. Bowerman 1933-5-8 2031 Contra Costa flat n of Rock City camp grounds Mount Diablo; , n of Rock City camp grounds Comment
  UC691251  Thysanocarpus curvipes Mary L. Bowerman 1931-4-19 740 Contra Costa Mitchell Canyon below Deer Flat Mount Diablo (Mount Diablo); , Mitchell Canyon below Deer Flat Comment
  UC857530  Thysanocarpus curvipes Lewis S. Rose 1941-3-27 41066 Contra Costa 2 mi w Byron 60 Comment
  UC857551  Thysanocarpus curvipes Lewis S. Rose 1940-4-11 40183 Contra Costa 11 mi se Clayton (Marsh Creek); Marsh Creek 45 Comment
  UC1543083  Thysanocarpus curvipes Donald G. Nelson 1937-4-24 519 Contra Costa Marsh Creek Road just after making direct turn s from canyon; Marsh Creek Road just after making direct turn s from canyon 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
  RSA0039448  Thysanocarpus curvipes var. curvipes Howard de Forest 1930-4-6 s.n. Contra Costa Unspecified. Comment
  UC10988  Thysanocarpus laciniatus W. H. Brewer 1862-5-17 1102 Contra Costa on dry hill n Mount Diablo; n of Mount Diablo Comment
  UC691514  Tonella tenella Mary L. Bowerman 1935-5-18 3023 Contra Costa Mount Diablo; nw-facing slope across the road from, and a little e of, the parking area 1066 Comment
  JEPS100127  Torilis nodosa G. Smick 2003-5-8 GAS 186 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  RSA610776  Toxicodendron diversilobum Joseph A. Ewan 1936-7-5 9738 Contra Costa Wildcat Creek Comment
  RSA610777  Toxicodendron diversilobum Joseph A. Ewan 1936-7-5 9737 Contra Costa Wildcat Creek Comment
  CAS-BOT-BC377055  Tragopogon dubius R. E. Frenkel 1964-4-29 466 Contra Costa On the south side of Ignacio Valley Road, 0.6 mile west of the junction with Marsh Creek Road 182 Comment
  CDA8354  Tragopogon porrifolius D. G. Kelch, A. G. Murdock 2003-4-1 03 .093-B Contra Costa Carquinez Strait; Crockett. E bound entrance to Carquinez Bridge. Comment
  JEPS100167  Tragopogon porrifolius G. Smick 2003-5-6 GAS 166 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS111695  Tragopogon porrifolius D. G. Kelch 2004-4-11 04 .74 Contra Costa Crockett - Crolona Heights Hillside above Rolf Drive. Lower Crolona heights 15 Comment
  UC570718  Trichostema lanceolatum Herbert L. Mason 1923-11-12 854 Contra Costa Mount Diablo, middle slopes Comment
  SEINET13948210 Image available Trichostema lanceolatum Lewis S. Rose 1953-1 53095 Contra Costa Mt. Diablo, W slope; 1600 ft alt. 488 Comment
  SD37268  Trifolium albopurpureum McCallum 1933-4-25 3699 Contra Costa Hillside near Tassajana Comment
  UC555617  Trifolium albopurpureum var. albopurpureum H. L. Mason 1929-5-7 5261 Contra Costa Moraga Ridge Comment
  UC1795830  Trifolium albopurpureum var. albopurpureum Barbara Ertter, Chris Thayer 1995-4-25 13983 Contra Costa Southeast side of Mt. Diablo northeast of Danville; Sycamore Canyon trail from Knobcone Point Rd., open grassland. 457 Comment
  UC630749  Trifolium albopurpureum var. dichotomum A. A. Heller 1908-4-17 8903 Contra Costa 3 mi s Antioch (hills) Comment
  UC2028215  Trifolium albopurpureum var. dichotomum Barbara Ertter with Richard K. Brummitt 1998-5-13 16131 Contra Costa Summit Road on Mount Diablo, base of rock outcrop/roadcut above Juniper Camp. Comment
  UC2070467  Trifolium albopurpureum var. olivaceum Barbara Ertter 2000-5-14 17002 Contra Costa Lower Donner Canyon on north side of Mount Diablo, junction of Donner Canyon, Cardinet Oaks and Meridian Ridge Roads. Comment
  UC2070438  Trifolium bifidum Barbara Ertter with Dan Norris 2001-4-8 17591 Contra Costa Lime Ridge Open Space east of Walnut Creek, path northwest of summit installation. Comment
  CDA27902  Trifolium bifidum var. decipiens A. G. Murdock, D. G. Kelch 2004-3-19 234 Contra Costa Carquinez Strait Region; McEwen Road. Comment
  SBBG29986  Trifolium bifidum var. decipiens J. T. Howell 1933-5-14 11264 Contra Costa hills E of St Mary's College Comment
  UC146057  Trifolium bifidum var. decipiens Ivar Tidestrom 1895-4-13 Contra Costa near Lafayette Comment
  UC692243  Trifolium bifidum var. decipiens Mary L. Bowerman 1933-5-21 2155 Contra Costa s Curry Canyon (nera Grape Spring); Mount Diablo Comment
  POM203635  Trifolium bifidum var. decipiens J. T. Howell 1933-5-14 11264 Contra Costa Hills east of St. Marys college Comment
  UC1607585  Trifolium ciliolatum Barbara Ertter 1991-6-1 10077 Contra Costa w Danville (in hills at n end of Rocky Ridge Trail); Las Trampas Regional Wilderness 548 Comment
  POM300693  Trifolium ciliolatum Mary L. Bowerman 1933-5-11 2082 Contra Costa Inner Black Hills east of South Road. Comment
  POM313531  Trifolium depauperatum var. amplectens P. B. Kennedy 1929-4-25 10245 Contra Costa Briones Valley, Marsh Creek road. Comment
  JEPS65840  Trifolium depauperatum var. depauperatum Edw. L. Greene 1889-3-23 Contra Costa Byron Springs Comment
  UC692685  Trifolium depauperatum var. truncatum Mary L. Bowerman 1935-4-12 2818 Contra Costa 2 mi from entrance (West (North) Rd); Mount Diablo 259 Comment
  UCD108800  Trifolium dichotomum Mrs. Brandegee 1907-5-1 s.n. Contra Costa Antioch. Comment
  UC16512  Trifolium fucatum W. H. Brewer 1862-5-1 1040 Contra Costa s Camp 69; Walnut Creek Comment
  UC16545  Trifolium fucatum J. Burtt Davy 1895-4-7 959 Contra Costa Antioch Comment
  UC692316  Trifolium fucatum Mary L. Bowerman 1932-3-23 1124 Contra Costa betw Monument and Concord (Oak Grove School junction); Mount Diablo Comment
  UC764679  Trifolium fucatum R. F. Hoover 1941-4-12 4837 Contra Costa 1 mi n Lone Tree Valley Comment
  UC1541574  Trifolium fucatum H. E. and S. T. Parks 1930-4-1 542 Contra Costa along hwy (in ditches); San Ramone Comment
  CDA29498  Trifolium gracilentum D. G. Kelch, Troy MacGregor 2009-5-1 9 .274 Contra Costa Carquinez Strait; Franklin Ridge. Fernandez Ranch Extension. Comment
  UC33592  Trifolium gracilentum J. P. Tracy 1900-3-24 622 Contra Costa Point Richmond 15 Comment
  UC631031  Trifolium gracilentum Mrs. K. Brandegee May 1907 Contra Costa Antioch Comment
  RSA61570  Trifolium gracilentum J. T. Howell 1933-5-14 11249 Contra Costa Hills east of St. Marys college Comment
  RSA695881  Trifolium gracilentum Barbara Ertter, Chris Thayer 1993-5-7 11712 Contra Costa Ca 1/2 mile N of Vollmer (=Bald) Peak in East Bay Municipal Utilities District land E of Tilden Park. Grazing land on lower slopes S of Wildcat Canyon Road. Comment
  UC2027844  Trifolium gracilentum Barbara Ertter with Dan Norris 2001-4-15 17610 Contra Costa West side Mount Diablo, head of W-facing drainage west of China Wall rock formation (off trail between Hanging Valley Trail and China Wall Road). Comment
  JEPS65906  Trifolium gracilentum var. gracilentum W. L. Jepson 1925-4-26 10688 Contra Costa Black Hills Mt. Diablo Comment
  CDA23566  Trifolium hirtum D. G. Kelch, D. A. Weinstein 2008-4-2 08 .032-b Contra Costa Carqinez Strait; E Richmond. Hilltop Rd. Chevy s Hill. Comment
  CDA15258  Trifolium hybridum G. F. Hrusa, D. Crowe 1998-5-8 14389 Contra Costa Sacramento Delta; E end of Dow Chemical property in Pittsburg. Comment
  CDA28015  Trifolium oliganthum D. G. Kelch, A. G. Murdock 2005-4-15 5 .15 Contra Costa Carquinez Strait Region; Rodeo Creek. EBRP land. West of Cummings Skyway near summit (Old C&H Sugar diatomaceous earth dump). Comment
  UC630888  Trifolium oliganthum Mrs. K. Brandegee may 1907 Contra Costa Antioch 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
  RSA721202  Trifolium olivaceum var. olivaceum Barbara Ertter 1995-5-29 14225 Contra Costa Mt. Diablo southeast of Walnut Creek, serpentine knoll ca 1/2 airmile north of Curry Point 488 Comment
  UC2028950  Trifolium repens Barbara Ertter 2000-7-16 17389 Contra Costa lower Pine Creek in Diablo Foothills Regional Park. Comment
  JEPS102894  Trifolium tomentosum Barbara Ertter 1998-5-3 16063 Contra Costa NW end of connector trail between BBQ Terrace Road and Wall Point Road Mount Diablo State Park 365 Comment
  UC16787  Trifolium variegatum Ivar Tidestrom 1893-4-15 Contra Costa Sheep Island Comment
  CHSC23357  Trifolium variegatum var. major Willis Ball 1975-3-26 515 Contra Costa Contra Loma Regional Park. In area #3. On n facing slope of large hill in area #3. Ca. 60 yds due nw of dam. Comment
  UCD109444  Trifolium variegatum var. major Collector unknown Date unknown s.n. Contra Costa 5 mi. north of Walnut Creek on road to Contra Costa Golf Club. Comment
  UC692680  Trifolium variegatum var. melananthum Mary L. Bowerman 1932-3-23 1126 Contra Costa betw Monument and Concord (Oak Grove School junction); Mount Diablo Comment
  POM194557  Trifolium variegatum var. melananthum Y. Mexia 1929-4-21 20379 Contra Costa Moraga Valley Comment
  JEPS100108  Trifolium willdenovii G. Smick 2003-3-25 GAS 81 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  SEINET4178511 Image available Trifolium willdenovii P. B. Kennedy 1928-1 10036 Contra Costa Byron Comment
  UC1057455  Trifolium willdenovii G. Thomas Robbins 1937-4-17 133 Contra Costa near Point Richmond Comment
  UC165503  Trifolium willdenovii J. Burtt Davy Apr 7-8 1895 954 Contra Costa Antioch Comment
  UC16757  Trifolium willdenovii W. H. Brewer 1862-5-12 1076 Contra Costa Mt. Diablo Comment
  UC692241  Trifolium willdenovii Mary L. Bowerman 1930-6-5 251 Contra Costa 5.8 mi from entrance (w rd = n rd); Mount Diablo Comment
  POM18879  Trifolium willdenovii H. P. Chandler 1901-3-22 841 Contra Costa Concord. Comment
  UC2028157  Trifolium willdenovii Barbara Ertter 1998-4-4 15954 Contra Costa Shell Ridge Open Space northwest of Mount Diablo. Comment
  UCD109505  Trifolium willdenovii Collector unknown Date unknown s.n. Contra Costa 5 miles north of Walnut Creek on road to Contra Costa Golf Club. Comment
  CAS-BOT-BC451764  Triglochin maritima Walter Knight; Joanne Dean No date on label 3131 Contra Costa Browns Island. Comment
  UC2028570  Triglochin scilloides Barbara Ertter with Brad Olson, Jim Shevock, et al. 1997-3-19 15518 Contra Costa Vasco Caves Regional Park east of Los Vaqueros Reservoir between Livermore and Brentwood. Comment
  UC2028389  Triglochin striata Barbara Ertter with Tony Morosco 1998-7-11 16373 Contra Costa Antioch Marina, in riverside trail marsh Comment
  JEPS21841  Trillium chloropetalum Bryce G. Decker 1958-3-7 1 Contra Costa above 60 Oak Dr. Orinda Comment
  UC1134679  Trillium chloropetalum H. S. Yates 1936-3-14 5360 Contra Costa Marsh Creek Mt. Diablo Quad., Marsh Creek Comment
  UC367109  Trillium ovatum J. G. Lemmon Apr 1878 Contra Costa [Mount Diablo] 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
  POM300987  Triodanis biflora Mary L. Bowerman 1933-5-18 2130 Contra Costa Mount Diablo. Comment
  JEPS68957  Triphysaria eriantha subsp. eriantha Edward Lee 1935-3-10 1289 Contra Costa Kirker Pass, Donovan Road, west Watershed of Kirker Creek Kirker Pass; , Donovan Road Comment
  UC1586061  Triphysaria eriantha subsp. eriantha Barbara Ertter with Jim Jokerst and Dave Magney 1989-4-5 8125 Contra Costa ca 15 air mi sw Stockton (se Contra Costa County); adjacent to Clifton Court Forebay 0 Comment
  UC691572  Triphysaria pusilla Mary L. Bowerman 1933-5-4 1989 Contra Costa (Rock City Ridge) Fossil Ridge Mount Diablo; , (Rock City Ridge) Fossil Ridge Comment
  RSA0069384  Triphysaria pusilla Katie Gallagher, Nick Jensen 2014-4-26 204 Contra Costa Las Trampas Regional Wilderness. 487 Comment
  UCD36927  Trisetum canescens Beecher Crampton 1956-5-14 3423 Contra Costa 2 miles west of Martinez, on road to Crockett. Comment
  CDA9474  Triteleia laxa D. G. Kelch 2004-3-13 4 .039 Contra Costa East Bay; Corner of Deer Valley Rd. and Briones Valley Rd. Comment
  JEPS100058  Triteleia laxa G. Smick 2003-4-10 GAS 136 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  JEPS58038  Triteleia laxa W. L. Jepson 1923-6-10 9986 Contra Costa vicinity San Francisco Bay (Head of Marsh Creek); , Mt. Diablo, Marsh Creek Comment
  CAS-BOT-BC526326  Triteleia laxa John Thomas Howell 1931-5-12 6468 Contra Costa Oakland Hills Comment
  POM203716  Triteleia laxa J. T. Howell 1931-5-12 6468 Contra Costa Oakland Hills Comment
  SEINET3889041  Triteleia laxa John Thomas Howell 1931-5-12 6468 Contra Costa Oakland Hills.; 0 Comment
  CDA2564  Triticum aestivum D. G. Kelch, A. G. Murdock 2005-3-13 5 .043 Contra Costa Carquinez Strait Region; Crockett - under Zampa Bridge. Comment
  CAS-BOT-BC67346  Tropidocarpum capparideum Robert F. Hoover 1936-3-19 806 Contra Costa Byron Hot Springs. Comment
  UC691063  Tropidocarpum gracile Mary L. Bowerman 1933-3-18 1750 Contra Costa floor of canyon above Olafson's; Mount Diablo, Curry Canyon Comment
  CAS-BOT-BC67406  Tropidocarpum gracile H. L. Mason 1929-3-31 5152 Contra Costa Along San Joaquin River at Antioch. Comment
  UC1241764  Typha domingensis Malcolm A. Nobs and S. Galen Smith 1949-6-28 877 Contra Costa on road to Martinez about two mi s Crockett Comment
  UC692073  Typha domingensis Mary L. Bowerman 1938-6-14 3677 Contra Costa Mineral Spring Mount Diablo (along streamlet); , Mineral Spring 350 Comment
  UC2028231  Ulmus minor Barbara Ertter 1998-11-15 16465 Contra Costa North side Mount Olympia on north side Mount Diablo. Comment
  UC2061510  Ulmus minor Dean G. Kelch 2016-4-30 16 .103 Contra Costa Carquinez Strait: Selby, west of Crockett. On west side of canyon near old dwelling foundation. Comment
  CAS-BOT-BC91089  Umbellularia californica Mrs. H. C. Cantelow 1937-2-22 s.n. Contra Costa Mount Diablo. Comment
  CDA24512  Umbellularia californica D. G. Kelch 2007-3-24 7 .082 Contra Costa Carquinez Strait; Ozol; between Port Costa and Martinez, near old brick quarry. Comment
  JEPS112485  Umbellularia californica D. G. Kelch 2004-3-5 04 .13 Contra Costa Sky Ranch Dutra Fire Road. Franklin Canyon 90 Comment
  UC588152  Umbellularia californica Annetta Carter 1937-3-20 1224 Contra Costa 2 mi nw of Orinda (Lake Orinda Road); Lake Orinda Road 121 Comment
  CAS-BOT-BC381830  Uropappus lindleyi Alice Eastwood 1921-4-18 10291 Contra Costa Antioch Comment
  JEPS111760  Uropappus lindleyi D. G. Kelch 2005-5-13 05 .258 Contra Costa Martinez - West: Ozol Rock and Scenic Drive Area along Vista Road ~ 2.5 kiloms West of Martinez 45 Comment
  JEPS36205  Uropappus lindleyi W. L. Jepson 1922-5-23 9652 Contra Costa Mt. Diablo Comment
  UC1795024  Uropappus lindleyi R. K. Brummitt and B. Ertter 1998-5-13 19837 Contra Costa Mt Diablo, just below summit on S side 1000 Comment
  UC2027813  Uropappus lindleyi Barbara Ertter with Stu Garrett 1997-3-29 15532 Contra Costa West side Mount Diablo, Burma Road on Long Ridge. Comment
  RSA0029769  Urospermum picroides Barbara Ertter 1990-6-18 9133 Contra Costa Tilden Regional Park, along Nimitz hiking/bicycle trail near Inspiration Point. Comment
  CAS-BOT-BC344883  Urtica Peter Rubtzoff 1968-9-18 5963 Contra Costa North Gate Road, ca. 5 miles northwest of Mt. Diablo State Park north entrance. Comment
  CAS-BOT-BC404064  Urtica dioica subsp. holosericea Mary L. Bowerman 1931-8-29 1032 Contra Costa Mount Diablo. Sheep Camp Spring, by west road Comment
  UCR142707  Urtica dioica subsp. holosericea Joseph A. Ewan 1933-10-15 8018 Contra Costa San Francisco Bay Region, South West slope of Mount Diablo 1159 Comment
  CDA34470  Urtica urens D. G. Kelch 2006-2-25 6 .084 Contra Costa Carquinez Strait; Crockett. Edwards Canyon. Comment
  UC195614  Urtica urens I. J. Condit 1913-4-19 Contra Costa Richmond Annex Comment
  UC1121122  Vaccinium ovatum R. W. Lundh 1933-1-12 186 Contra Costa 0.5 mi s Round Mt.; Concord Quad. 609 Comment
  UC1050826  Verbascum N. Floy Bracelin 1941-6-1 1346 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  JEPS81010  Verbena lasiostachys var. scabrida Edward Lee 1936-12-12 2609 Contra Costa just nw Berkeley Country club Comment
  UC139763  Verbena lasiostachys var. scabrida Katharine Brandegee 1907-7-4 Contra Costa Between Martinez and Port Costa Comment
  UC1050160  Viburnum cylindricum N. Floy Bracelin 1943-10-24 2368 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1050168  Viburnum japonicum N. Floy Bracelin 1944-4-23 2377 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1051053  Viburnum japonicum N. Floy Bracelin 1942-10-4 2334 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1050194  Viburnum tinus N. Floy Bracelin 1943-2-9 2416 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UC1050363  Viburnum trilobum N. Floy Bracelin 1943-7-25 2187 Contra Costa Adelante, The Garden of Anson and Anita Blake, Berkeley, California Comment
  UCD32375  Vicia Beecher Crampton 1950-4-16 516 Contra Costa Contra Costa County, road from San Pablo to Giant, along RR. property. 22 Comment
  CDA23620  Vicia americana D. G. Kelch, D. A. Weinstein 2008-4-15 8 .041 Contra Costa Carquinez Strait; S Port Costa along Mckewen Rd. Comment
  JEPS99517  Vicia americana Mary Bowerman 1978-5-24 Contra Costa Mount Diablo, Donner Canyon. West trail of Hetherington Loop. 274 Comment
  UC1130189  Vicia americana var. americana C. M. Belshaw 1936-5-12 2109 Contra Costa 3.7 mi ene Tassajero; Mt. Diablo Quad. 670 Comment
  UC692687  Vicia americana var. americana Mary L. Bowerman 1931-3-21 589 Contra Costa Sycamore Canyon; Mount Diablo 335 Comment
  UCD38561  Vicia americana var. americana Beecher Crampton 1956-5-14 3426 Contra Costa 4 miles west of Martinez on the road to Crockett, above Port Costa Brick Works. Comment
  UC16943  Vicia americana var. americana H. P. Chandler 1900-3-17 Contra Costa Wildcat Canyon; Berkeley Hills Comment
  JEPS100101  Vicia benghalensis G. Smick 2003-3-27 GAS 98 Contra Costa Mt. Wanda; Martinez; John Muir National Historic Site; Mt. Wanda, John Muir National Historic Site Comment
  CHSC75276  Vicia sativa Roger Thom 1987-4-21 2 Contra Costa 3354 Johnson Rd. Lafayette. Comment
  UC2027991  Vicia sativa subsp. sativa Barbara Ertter with Tony Morosco 1998-4-12 16027 Contra Costa Quarry road at base of Mount Olympia, north side of Mount Diablo. Comment
  SEINET7370950  Vicia villosa P. Del Monte 1976-3-28 s.n. Contra Costa Curry Creek Park 183 Comment
  JEPS99560  Vicia villosa subsp. varia Mary Bowerman 1995-5-21 Contra Costa Mount Diablo, (Probably Wall Point Rd. from South Gate Rd.). Comment
  UC2029037  Vinca major Barbara Ertter 2000-3-30 16902 Contra Costa North base of Mount Diablo, lower Mitchell Canyon ca 1 miles from trailhead. Comment
  UC2028211  Viola pedunculata Barbara Ertter, Tony Morosco 1998-4-12 15986 Contra Costa Base of Mount Olympia on north side of Mount Diablo, meadow on south side of lower end of Olympia Trail. Comment