37.98986 38.08986 -121.79989 -121.69989 Archived CCH Search Results
Search Results — 286 specimen records retrieved (286 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC21726  Achillea millefolium Alice Eastwood; J. T. Howell 1941-4-23 8635 Sacramento Between the Antioch and Rio Vista bridges Comment
  CDA19209  Agrostis viridis Whitlock 2001-4-3 PDR 041591 Contra Costa San Francisco Bay Area; At San Joaquin yacht harbor, Antioch. 0 Comment
  CAS-BOT-BC170931  Alnus rhombifolia Walter Knight 1965-3-1 910 Contra Costa Antioch Dunes, along water's edge - Carquinez Straights Comment
  CAS-BOT-BC55590  Ambrosia psilostachya Walter Knight 1965-9-7 1167 Contra Costa San Joaquin River at Antioch sand dunes Comment
  UC1584662  Ambrosia psilostachya Jerry Powell 1990-8-29 1585 Contra Costa Antioch National Wildlife Refuge Comment
  UC725802  Amsinckia A. A. Heller 1941-3-24 15904 Sacramento Upper Sherman Island Comment
  JEPS18323  Amsinckia menziesii var. menziesii Rimo Bacigalupi with F. Chisaki 1957-3-27 5758 Contra Costa 1 1/2 mi e of Antioch (city limits, just e of Kaiser Gypsum Plant, along Wilbur Avenue Road) 9 Comment
  UC1178245  Amsinckia menziesii var. menziesii Francia Chisaki and R. Bacigalupi 1957-3-27 911 Contra Costa 1.5 mi e of Antioch City limits (just e of Kaiser Gypsum Plant along Wilbur Avenue) Comment
  UC196982  Ancistrocarphus filagineus Chesnut and Drew 1889-4-18 Contra Costa sand hills Antioch Comment
  UC1594204  Apocynum cannabinum Jerry Powell 1991-6-11 1606 Contra Costa Antioch Nat'l Wildlife Refuge Comment
  UC1584664  Artemisia douglasiana Jerry Powell 1990-8-29 1591 Contra Costa Antioch National Wildlife Refuge Comment
  UC1584665  Artemisia douglasiana Jerry Powell 1990-8-29 1592 Contra Costa Antioch National Wildlife Refuge Comment
  UC1584696  Artemisia douglasiana Jerry Powell 1990-8-29 1591 Contra Costa Antioch National Wildlife Refuge Comment
  UC1584697  Artemisia douglasiana Jerry Powell 1990-8-29 1591 Contra Costa Antioch National Wildlife Refuge Comment
  UC1584827  Asparagus officinalis subsp. officinalis Jerry Powell 1990-8-29 1589 Contra Costa Antioch National Wildlife Refuge Comment
  GH376898  Azolla mexicana Steven Talley 1977-09-01 - 1977-10-01 Unknown West end of Sherman Island Comment
  CDA32857  Baccharis salicifolia D. G. Kelch 2010-10-5 10 .418 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UC1057486  Calystegia sepium subsp. binghamiae G. Thomas Robbins 1940-5-19 327 Contra Costa San Joaquin River e Antioch; San Joaquin River e of Antioch Comment
  UC1594199  Calystegia sepium subsp. binghamiae Jerry Powell 1991-8-15 1614 Contra Costa Antioch National Wildlife Refuge Comment
  CAS-BOT-BC224745  Calystegia sepium subsp. limnophila R. K. Brummitt; B. Ertter 1998-5-6 19792 Contra Costa Antioch. Sea level Comment
  RSA710326  Calystegia sepium subsp. limnophila R. K. Brummitt, Barbara Ertter, N. A. Brummitt 1998-5-6 19792 Contra Costa Antioch, by marina. Comment
  SEINET3449072  Calystegia sepium subsp. limnophila Dean G. Kelch, Andrew G. Murdock 2004-7-9 DGK 4 .289 Contra Costa Crockett, Crockett, immediately below high school, Edwards Creek 4 Comment
  UC1084506  Camissonia campestris subsp. campestris G. Thomas Robbins 1940-5-19 328 Contra Costa e Antioch (slope above river); San Joaquin River Comment
  UC635287  Camissonia campestris subsp. campestris H. L. Mason 1929-3-31 5153 Contra Costa Antioch San Joaquin River (sand dike along river) Comment
  UC635291  Camissonia campestris subsp. campestris H. L. Mason 1931-4-5 5820 Contra Costa Antioch sandhills Comment
  RSA41303  Camissonia micrantha Robert F. Hoover 1935-3-10 314 Contra Costa Antioch sand-dunes Comment
  UC35344  Camissoniopsis micrantha Chesnut and Drew 1889-4-18 Contra Costa Sand Hills Antioch Comment
  UC635405  Camissoniopsis micrantha H. L. Mason 1929-3-31 5160 Contra Costa Antioch San Joaquin River (sand dike along river) Comment
  UC764055  Camissoniopsis micrantha Robert F. Hoover 1935-3-10 314 Contra Costa Antioch sand-dunes Comment
  CAS-BOT-BC19206  Carex barbarae Walter Knight; Irja Knight 1977-6-18 s.n. Contra Costa About 50 ft. from shore of San Joaquin River. Antioch sand dunes, Little Corral site. Comment
  JEPS16805  Castilleja exserta subsp. exserta Rimo Bacigalupi with G. Thomas Robbins 1955-5-4 4983 Contra Costa 1.25 mi e Antioch (near the San Joaquin River) 9 Comment
  UC27244  Castilleja exserta subsp. exserta R. C. Marsh 1900-4-5 Contra Costa Oakley; Mount Diablo Region Comment
  UC1178020  Centaurium muehlenbergii Herbert L. Mason 1955-7-14 14637 Contra Costa 0.5 mi e Antioch Bridge Comment
  UC1178029  Centunculus minimus Herbert L. Mason 1955-7-14 14632 a Contra Costa 1/2 mi e of Antioch Bridge Comment
  UC1594163  Cephalanthus occidentalis var. californicus Jerry Powell 1991-6-11 1607 Contra Costa Antioch National Wildlife Refuge Comment
  UC1594173  Cephalanthus occidentalis var. californicus Jerry Powell 1991-8-15 1612 Contra Costa Antioch National Wildlife Refuge Comment
  UC565564  Chaenactis glabriuscula var. glabriuscula H. L. Mason 1929-3-31 5157 Contra Costa Antioch, sand dikes along San Joaquin River San Joaquin River, Antioch Comment
  CAS-BOT-BC284217  Chaenactis glabriuscula var. megacephala A. A. Heller 1908-4-16 8894 Contra Costa East of Antioch 22 Comment
  UC14076  Chenopodium californicum Chesnut and Drew 1889-4-18 Contra Costa Antioch; sand hills Comment
  UC1789151  Cinnamomum camphora Barbara Ertter 2001-5-26 17653 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch, two young individuals at base of river bank. Comment
  RSA41158  Clarkia unguiculata Robert F. Hoover 1937-5-14 2110 Contra Costa Antioch sand-dunes Comment
  UC765869  Clarkia unguiculata R. F. Hoover 1937-5-14 2110 Contra Costa Antioch sand-dunes Comment
  CAS-BOT-BC443683  Claytonia perfoliata subsp. perfoliata Walter Knight 1965-3-1 904 Contra Costa Antioch dunes Comment
  CHSC96777  Convolvulus arvensis T. C. Fuller 1961-9-13 6998 Sacramento Sacramento River Delta. Sacramento County. Sherman Island, 1 mi N of Antioch Bridge. Comment
  CHSC97946  Convolvulus arvensis T. C. Fuller 1961-9-13 6998 Sacramento Common in safflower, Sherman Island, 1 mi N of Antioch Bridge. Comment
  UCR182952  Convolvulus arvensis T. C. Fuller 1961-9-13 6998 Sacramento Sacramento River Delta: Sherman Island, 1 mile north of Antioch Bridge Comment
  UC1594168  Conyza bilbaoana Jerry Powell 1616 Contra Costa Antioch National Wildlife Refuge Contra Costa Comment
  UC1584663  Conyza canadensis Jerry Powell 1990-8-29 1586 Contra Costa Antioch National Wildlife Refuge Comment
  JEPS68960  Crassula connata Edward Lee 1935-3-10 1292 Contra Costa Antioch Sand Dunes e. of Antioch; Antioch Sand Dunes Comment
  JEPS79011  Croton californicus Edward Lee with Annetta Carter 1935-10-17 1626 Contra Costa Antioch; dunes Comment
  JEPS79012  Croton californicus Edward Lee with Annetta Carter 1935-10-17 1626 Contra Costa Antioch; dunes Comment
  UC1084501  Croton californicus G. Thomas Robbins 1940-5-19 322 Contra Costa e Antioch (sand hills bordering river); San Joaquin River Comment
  UC765094  Croton californicus R. F. Hoover 1937-5-14 2113 Contra Costa Antioch sand-dunes Comment
  UC765095  Croton californicus R. F. Hoover 1937-5-14 2114 Contra Costa Antioch sand-dunes Comment
  CDA32859  Crypsis schoenoides D. G. Kelch 2010-10-5 10 .421 Contra Costa The Delta; Just east of Antioch bridge. Comment
  GH424859  Cryptantha hooveri A. A. Heller 1908-4-16 8888 Unknown east of Antioch 22 Comment
Read comments
Oct 24 2012
  UC24711  Cryptantha intermedia unknown 1900-3-24 Contra Costa Oakley Comment
  UCR51833  Cuscuta californica P. A. Munz 1947-10-8 12200 Contra Costa Dunes near Antioch 8 Comment
  UCD33560  Cynara cardunculus Beecher Crampton 1970-3-10 8535 Sacramento S.W. tip of Sherman Island. Comment
  CDA1937  Cynodon dactylon T. C. Fuller 1961-9-13 6994 San Joaquin Delta; Sherman Island, ca. 4 miles east of Thornton; Thornton-Walnut Grove Road, 0.1 mile east of Mokelumne River Bridge. 0 Comment
  JEPS64110  Cyperus eragrostis W. L. Jepson 1923-10-4 10214 Sacramento Sherman Isl. Comment
  UC69615  Delphinium parryi subsp. parryi R. C. Marsh 1900-4-5 Contra Costa Oakley Comment
  UCD61248  Deschampsia cespitosa Ann F. Johnson 1978-5-26 AN- 23 Contra Costa At edge of San Joaquin River, Antioch Dunes. Comment
  UCD84918  Deschampsia cespitosa subsp. holciformis Chuck Hughes 2010-6-23 191 Sacramento 75 feet northwest of West Sherman Island Road. 0 Comment
  UCD32994  Echinochloa crus-pavonis Beecher Crampton 1965-9-29 7532 Sacramento Sacramento County, Sherman Island just north of Antioch Bridge on Hwy. 24. Comment
  UCD60941  Echinochloa crus-pavonis var. crus-pavonis Beecher Crampton 1965-9-29 7532 Sacramento Sherman Island, just north of the Antioch Bridge, State Hwy. 24. Comment
  UC702897  Elaeagnus angustifolia Dr. E. C. Van Dyke 1941-10-4 Contra Costa River e of Antioch Comment
  UCR11895  Elaeagnus angustifolia E. C. Van Dyke 1941-10-4 s.n. Contra Costa [San Joaquin] river bank east of Antioch 15 Comment
  CAS-BOT-BC57103  Equisetum X ferrissii W. Knight; I. Knight 1977-5-22 s.n. Contra Costa Antioch Dunes Comment
  JEPS60130  Equisetum X ferrissii W. L. Jepson 1923-10-4 10217 Sacramento Sherman Isl.; Lower Sacramento River Comment
  JEPS79321  Erigeron foliosus var. franciscensis Edward Lee with Annetta Carter 1935-8-17 1633 Contra Costa Antioch sand-dunes Comment
  RSA39906  Eriogonum nudum var. auriculatum P. A. Munz 1947-10-8 12204 Contra Costa Sand dunes east of Antioch 8 Comment
  JEPS79013  Eriogonum nudum var. psychicola Edward Lee with Annetta Carter 1935-8-17 1630 Contra Costa Antioch sand-dunes Comment
  UC1229891  Eriogonum nudum var. psychicola Jerry Powell 1962-8-19 308 Contra Costa about 2 mi e 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
  POM89812  Eriogonum truncatum M. K. Curran 1886-05 s.n. Contra Costa Antioch Comment
  UC85720  Eriogonum truncatum M. K. Curran May 1886 Contra Costa Antioch Comment
  SEINET8673416  Eryngium articulatum Lincoln Constance, Bell, C. Ritchie; Keng, Hsuan 1957-8-21 3657 Sacramento Sherman Island, margin of San Joaquin River 0.5 mile E. of Antioche Bridge 0 Comment
  UC1093587  Eryngium articulatum L. Constance, C. R. Bell, and Hsuan Keng 1957-8-21 3657 Sacramento 0.5 mi. e. Antioch Bridge (margin of San Joaquin R., Sherman Island); San Joaquin R., Sherman Isl. Comment
  UC1584829  Eryngium articulatum Jerry Powell 1990-8-29 1587 Contra Costa Antioch Nat'l Wildlife Refuge Comment
  CAS-BOT-BC40767  Erysimum capitatum G. B. Rossbach 1955-3-13 570 Contra Costa Along tidal estuary of San Joaquin River just east of Antioch. 24 Comment
  CAS-BOT-BC40768  Erysimum capitatum G. B. Rossbach; R. P. Rossbach 1938-6-5 858 a Contra Costa Along tidal estuary of San Joaquin River just east of Antioch. Comment
  CAS-BOT-BC40769  Erysimum capitatum G. B. Rossbach; R. P. Rossbach 1938-6-5 858 b Contra Costa Along tidal estuary of San Joaquin River just east of Antioch. Comment
  CAS-BOT-BC40774  Erysimum capitatum J. H. Thomas 1953-4-25 3010 Contra Costa Antioch sand hills along San Joaquin River, 0.2 mile west of Antioch Bridge. Comment
  CAS-BOT-BC41526  Erysimum capitatum H. L. Mason 1933-4-9 7189 Contra Costa East of Antioch along the San Joaquin River. 12 Comment
  NY32657  Erysimum capitatum subsp. angustatum A. A. Heller 1908-4-16 8898 Contra Costa Sand hills east of Antioch. 22.9 Comment
  NY32658  Erysimum capitatum subsp. angustatum H. L. Mason 1933-4-9 7189 Contra Costa East of Antioch along the San Joaquin River. 12.2 Comment
  GH379524  Erysimum capitatum var. angustatum G. B. Rossbach & R. P. Rossbach 1938-6-5 858 Unknown along tidal estuary of San Joaquin River, just east of Antioch Comment
  GH379525  Erysimum capitatum var. angustatum G. B. Rossbach 1955-3-13 570 Unknown Dunes along tidal estuary of San Joaquin R just E of Antioch 24 Comment
  GH379526  Erysimum capitatum var. angustatum H. L. Mason 1933-4-9 7189 Unknown East of Antioch along the San Joaquin River 12 Comment
  GH379532  Erysimum capitatum var. angustatum R. F. Hoover 1937-5-14 2111 Unknown Antioch sand-dunes Comment
  POM272844  Erysimum capitatum var. angustatum H. L. Mason 1933-4-9 7189 Contra Costa East of Antioch along the San Joaquin River. 12 Comment
  RSA102133  Erysimum capitatum var. angustatum G. B. Rossbach 1955-3-13 570 Contra Costa Along tidal estuary of San Joaquin River just E of Antioch 24 Comment
  JEPS68964  Erysimum capitatum var. capitatum Edward Lee 1935-3-10 1296 Contra Costa e Antioch (hollow in stablized dune); Antioch Sand Dunes Comment
  SBBG92005  Erysimum capitatum var. capitatum H. L. Mason 1933-4-9 7189 Contra Costa E of Antioch along the San Joaquin River 12 Comment
  SD141829  Erysimum capitatum var. capitatum H. L. Mason 1933-4-9 7189 Contra Costa East of Antioch along the San Joaquin River 14 Comment
  UC1034729  Erysimum capitatum var. capitatum G. B. and R. P. Rossbach 1938-6-5 858 Contra Costa low sand dunes along tidal estuary of river just e San Joaquin River Comment
  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
  UC534852  Erysimum capitatum var. capitatum H. L. Mason 1933-4-9 7189 Contra Costa sand hills along river e Antioch; San Joaquin River 12 Comment
  UC673518  Erysimum capitatum var. capitatum H. L. Mason 1931-4-5 5822 Contra Costa Antioch sand hills Comment
  UC762935  Erysimum capitatum var. capitatum R. F. Hoover 1937-5-14 2111 Contra Costa Antioch sand-dunes Comment
  JEPS12792  Eschscholzia californica Rimo Bacigalupi with G. T. Robbins 1955-5-4 4982 Contra Costa 1 1/4 mi e Antioch; San Joaquin River front 9 Comment
  JEPS79015  Eschscholzia californica Edward Lee with Annetta Carter 1935-8-17 1632 Contra Costa Antioch Sand-dunes Comment
  CDA33068  Euthamia occidentalis D. G. Kelch 2010-10-5 10 .42 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UC1039519  Galium aparine Herbert L. Mason 1932-3-20 6840 Contra Costa Antioch sand hills Comment
  JEPS12791  Gilia capitata subsp. staminea Rimo Bacigalupi with G. T. Robbins 1955-5-4 4981 Contra Costa just e Antioch (on sand hills along San Joaquin River front); along San Joaquin River front, e of Antioch 9 Comment
  RSA566427  Gilia capitata subsp. staminea Peter L. Morrell, Donna S. Krause 1993-5-16 239 Contra Costa Contra Costa County, along sides of raod 100m W of 1701 Wilbur Ave, Antioch, betw Southern Pacific tracks and San Joaquin River (0.5 miles W of Hwy 4/160). Comment
  RSA566428  Gilia capitata subsp. staminea Peter L. Morrell, Donna S. Krause 1993-5-16 239 Contra Costa Contra Costa County, along sides of raod 100m W of 1701 Wilbur Ave, Antioch, betw Southern Pacific tracks and San Joaquin River (0.5 miles W of Hwy 4/160). Comment
  RSA566429  Gilia capitata subsp. staminea Peter L. Morrell, Donna S. Krause 1993-5-16 239 Contra Costa Contra Costa County, along sides of raod 100m W of 1701 Wilbur Ave, Antioch, betw Southern Pacific tracks and San Joaquin River (0.5 miles W of Hwy 4/160). Comment
  UC1084502  Gilia capitata subsp. staminea G. Thomas Robbins 1940-5-19 323 Contra Costa e Antioch (hills bordering San Joaquin River); hills bordering San Joaquin River e of Antioch Comment
  UC908108  Gilia capitata subsp. staminea Herbert L. Mason 1929-3-31 5159 Contra Costa Antioch; San Joaquin River Comment
  UC913387  Gilia capitata subsp. staminea G. Thomas Robbins 1940-5-19 323 Contra Costa hills e Antioch (bordering San Joaquin River); , e of Antioch Comment
  UC932019  Gilia capitata subsp. staminea Verne Grant, Alva Grant 1947-4-13 7925 Contra Costa sand hills by railroad tracks e Antioch; e of Antioch Comment
  UCR86951  Gilia capitata subsp. staminea Peter L. Morrell, Donna Krause 1993-5-16 239 Contra Costa Along side of road 100m west of 1701 Wilbur Ave., Antioch, between Southern Pacific tracks and San Joaquin River (0.5 miles west of Calif. Hwy 4/160) 6 Comment
  LA203655  Grindelia camporum Lewis S. Rose; 1930-7-22 sn Contra Costa Antioch Bridge Comment
  CAS-BOT-BC305226  Grindelia hirsutula Lewis S. Rose 1930-7-22 s.n. Contra Costa Antioch Bridge Comment
  CDA32858  Grindelia hirsutula D. G. Kelch 2010-10-5 10 .419 Contra Costa The Delta; Just east of Antioch bridge. Comment
  JEPS40435  Grindelia hirsutula William Turner 1965-11-23 Contra Costa in the sand hills just e Antioch (along the San Joaquin River); , in the Antioch sand hills Comment
  CAS-BOT-BC304583  Gutierrezia californica Walter Knight 1965-9-7 1172 Contra Costa Overlooking San Joaquin River. Antioch sand dunes 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
  JEPS79354  Gutierrezia californica Edward Lee with Annetta Carter 1935-8-17 1622 Contra Costa Antioch sand-dunes Antioch Comment
  RSA201182  Gutierrezia californica Peter Rubtzoff 1954-9-14 1750 Contra Costa Sand dunes along lower San Joaquin River, east of Antioch. Comment
  UC455500  Gutierrezia sarothrae I. J. Condit 1908-8-20 Contra Costa Oakley Comment
  UC1594170  Helenium bigelovii Jerry Powell 1991-6-29 1611 Contra Costa intertidal zone at river edge Antioch National Wildlife Refuge Comment
  UC552471  Helenium bigelovii C. L. Swenson 1936-7-9 Contra Costa river sloughs near Antioch; San Joaquin River Comment
  CDA33069  Heliotropium curassavicum D. G. Kelch 2010-10-5 10 .422 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UC1084508  Heliotropium curassavicum G. Thomas Robbins 1940-5-19 330 Contra Costa roadside between Antioch and Rio Vista Rio Vista Comment
  CAS-BOT-BC422501  Hesperomecon linearis A. A. Heller 1908-4-16 8890 Contra Costa East of Antioch 22 Comment
  UC579909  Hesperomecon linearis Annetta M. Carter 1933-4-23 298 Contra Costa San Joaquin River, between Antioch Bridge and Antioch Comment
  UC725833  Hesperomecon linearis A. A. Heller 1908-4-16 8890 Contra Costa East of Antioch 22 Comment
  CAS-BOT-BC318822  Heterotheca grandiflora Walter Knight 1965-3-1 907 Contra Costa Antioch Dunes Comment
  JEPS40434  Heterotheca grandiflora William Turner 1965-11-23 Contra Costa just e Antioch (in the Antioch sand hills); San Joaquin River Comment
  UC1584840  Heterotheca grandiflora Jerry Powell 1990-3-9 1574 Contra Costa Antioch National Wildlife Refuge Comment
  UC897760  Heterotheca grandiflora A. A. Heller 1938-4-9 15020 Sacramento Upper Sherman Island 15 Comment
Read comments
Dec 5 2009
  JEPS79318  Heterotheca sessiliflora subsp. echioides Edward Lee with Annetta Carter 1935-8-17 1624 Contra Costa Antioch; sand-dunes Comment
  JEPS79319  Heterotheca sessiliflora subsp. echioides Edward Lee with Annetta Carter 1935-8-17 1624 Contra Costa Antioch; sand-dunes Comment
  UC625365  Hibiscus lasiocarpos Ira L. Wiggins 1938-8-15 9006 Contra Costa at Hwy. #4 Old R.; San Joaquin R., Old R. <branch of San Joaquin R.> Comment
  UCD85761  Hordeum jubatum V. P. Osterli 1951-7-1 s.n. Contra Costa Oakley area. Comment
  UC907509  Isoetes howellii Herbert L. Mason June 1950 Sacramento just above n end of Antioch Bridge (San Joaquin River) Comment
  GH422735  Juglans hindsii D. E. Stone & B. L. Stone 2004-7-8 4273 Unknown Brannan Island off State 160, 3 mi south of Rio Vista. Flood Plain of Sacramento River, planted in the park area Comment
  UC566714  Lasthenia gracilis H. L. Mason 1929-3-31 5154 Contra Costa along San Joaquin River; , Antioch Comment
  UC71908  Lasthenia gracilis The Postmaster 1900-3-24 Contra Costa Oakley Region of Mount Diablo Comment
  CHSC45322  Lathyrus jepsonii var. californicus Laurie Archambault; Jean Witzman 1988-6-16 Sacramento NW edge of Sherman Island at confluence of Sacramento and San Joaquin Rivers. Approx. 0.6 mi west of Atioch Bridge near the big bend in Mayberry Slough across from Donlan Island. Comment
  CHSC45324  Lathyrus jepsonii var. jepsonii Jean Witzman; Laurie Archambault 1988-6-16 Sacramento NW edge of Sherman Island at confluence of Sacramento and San Joaquin Rivers. Approx. 1.25 mi west of Antioch Bridge at the big bend in Mayberry Slough across from Donlan Island. Comment
  CAS-BOT-BC321083  Layia glandulosa A. A. Heller 1908-4-16 8896 Contra Costa E of Antioch 22 Comment
  JEPS68959  Layia glandulosa Edward Lee 1935-3-10 1291 Contra Costa e Antioch Comment
  UC30623  Layia glandulosa unknown 1900-4-5 Contra Costa Oakley Comment
  UC30627  Layia glandulosa The Postmaster 1900-3-24 Contra Costa Oakley Comment
  CAS-BOT-BC89713  Lepidium latifolium W. Knight; I. Knight 1977-5-22 s.n. Contra Costa Antioch Dunes. Comment
  RSA39870  Lessingia pectinata var. tenuipes P. A. Munz 1947-10-8 12202 Contra Costa Sand dunes east of Antioch 8 Comment
  UC1287410  Lessingia pectinata var. tenuipes Willard Spence 1962-5-15 672 Contra Costa 0.2 mi e of entrance to Antioch Boat Ramp Comment
  UC1137020  Leymus triticoides August L. Hormay 1932-6-11 Sacramento Victory Hwy 10 m s Sacramento Comment
  UCD87573  Leymus triticoides August L. Hormay 1932-6-11 s.n. Sacramento Victory Highway. 10 miles S of Sacramento. Comment
  CAS-BOT-BC211109  Lilaeopsis masonii Walter Knight; Irja Knight 1977-6-18 s.n. Contra Costa Antioch Sand Dunes, Little Corral site Comment
  CAS-BOT-BC211110  Lilaeopsis masonii W. Knight; I. Knight 1977-5-22 s.n. Contra Costa Antioch Dunes Comment
  CAS-BOT-BC211111  Lilaeopsis masonii Craig P. Martz 1988-6-23 275 Sacramento South bank of Horseshoe Bend on Sherman Island between Emma and Emmaton 0 Comment
  UC1023782  Lilaeopsis masonii Lincoln Constance and Herbert L. Mason 1955-7-14 3610 Sacramento 0.5 mi. e. of n. end of Antioch Bridge (Sherman Isl., margin of San Joaquin R.); San Joaquin R., Sherman Isl. Comment
Read comments
Jun 26 2013
  UC1101455  Lilaeopsis masonii Herbert L. Mason April, 1954 Contra Costa n. end Antioch Bridge Comment
  UC1111016  Lilaeopsis masonii Herbert L. Mason October, 1942 12556 Contra Costa Antioch, Lower San Joaquin R. Comment
  UC1261904  Lilaeopsis masonii A. Q. Howard 1977-8-24 39 Contra Costa along Stamm property w. of Sardis property (Little Corral) Antioch Dunes Comment
  UC1560436  Lilaeopsis masonii Craig P. Martz 1988-6-23 275 Sacramento s. bank of Horseshoe Bend on Sherman Isl. (between Emma and Emmaton); Jersey Isl. 7.5' U.S.G.S. Quad. 0 Comment
  UCD84916  Lilaeopsis masonii Chuck Hughes 2010-6-23 189 Sacramento 75 feet northwest of West Sherman Island Road. 0 Comment
  UC1178018  Lilium pardalinum Herbert L. Mason 1955-7-14 14633 Contra Costa 0.5 mi e Antioch Bridge Comment
  UCD84915  Limosella subulata Chuck Hughes 2010-6-23 188 Sacramento 75 feet northwest of West Sherman Island Road. 0 Comment
  UC570875  Lithophragma affine H. L. Mason 1932-3-20 6843 Contra Costa Antioch Sand Hills Comment
Read comments
Oct 9 2006
  UC1300865  Lotus strigosus Helen K. Sharsmith 1963-4-7 5291 Contra Costa s of Antioch (near Oakley); San Francisco Bay Region 15 Comment
  UC726775  Lupinus A. A. Heller 1938-4-9 15019 Contra Costa near the w end Antioch Bridge; near the w end of the Antioch Bridge Comment
  JEPS64909  Lupinus albifrons W. L. Jepson 1931-4-5 15724 Contra Costa Oakley part of Antioch sand-dune formation, Oakley 18 Comment
  POM10982  Lupinus albifrons var. albifrons C. F. Baker 1903-4-25 2823 Contra Costa Antioch. Comment
  UCD84920  Lupinus arboreus Chuck Hughes 2010-6-23 193 Sacramento 75 feet southeast of West Sherman Island Road. 0 Comment
  UC1076228  Lupinus bicolor Herbert L. Mason 1931-4-5 5821 Contra Costa Antioch sandhills Comment
  UC1300886  Lupinus bicolor Helen K. Sharsmith 1963-4-7 5292 Contra Costa near Oakley (s of Antioch); , near Oakley 15 Comment
  UC1073380  Lupinus bicolor subsp. umbellatus George B. Rossbach 1955-3-13 323 Contra Costa just e Antioch (along San Joaquin River); , just e of Antioch Comment
  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
  UC1178022  Lythrum californicum Herbert L. Mason 1955-7-14 14636 Contra Costa 1/2 mi e of Antioch Bridge Comment
  POM54304  Madia radiata Katherine Brandegee 1908-4-9 s.n. Contra Costa Borders of cultivated fields near Antioch 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
  JEPS63480  Mentha canadensis W. L. Jepson 1923-10-4 10216 Sacramento Sherman Island 1 Comment
  UC1028683  Minuartia californica Herbert L. Mason 1932-3-20 6849 Contra Costa Antioch Sand Hills Comment
  UC1076314  Monolepis nuttalliana Herbert L. Mason 1931-4-5 5891 Contra Costa Antioch sandhills Comment
  UC131184  Myosurus sessilis Katharine Brandegee 1909-5-1 Contra Costa bet. Marsh Creek and Antioch (along the road) Comment
  UC592190  Nemophila menziesii H. L. Mason 1932-3-20 6837 Contra Costa Antioch sand hills Comment
  UC592126  Nemophila pedunculata H. L. Mason 1932-3-20 6841 Contra Costa Antioch sand hills Comment
  CHSC69645  Oenothera deltoides subsp. cognata James D. Jokerst 1988-4-26 3003 Contra Costa Town of Oakly, E and adjacent to Hwy. 4, N of Cypress Rd., between highway and railroad tracks. Comment
  CAS-BOT-BC171587  Oenothera deltoides subsp. howellii P. A. Munz 1949-6-1 14436 Contra Costa Sand dunes east of Antioch 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-BC171589  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-BC171590  Oenothera deltoides subsp. howellii J. H. Thomas 1949-4-19 314 Contra Costa Antioch sand dunes. Comment
  CAS-BOT-BC171591  Oenothera deltoides subsp. howellii P. A. Munz 1949-6-1 14436 Contra Costa Sand dunes east of Antioch. Comment
  CAS-BOT-BC171596  Oenothera deltoides subsp. howellii Peter Rubtzoff 1954-9-14 1756 Contra Costa Sand dunes along lower San Joaquin river, east of Antioch Comment
  CAS-BOT-BC171597  Oenothera deltoides subsp. howellii Walter Knight 1965-3-1 s.n. Contra Costa Antioch dunes. Comment
  JEPS12789  Oenothera deltoides subsp. howellii Rimo Bacigalupi with G. T. Robbins 1955-5-4 4979 Contra Costa river front just e Antioch; San Joaquin River 9 Comment
  JEPS716  Oenothera deltoides subsp. howellii W. L. Jepson 1945-10-28 27570 Contra Costa Antioch Sand Hills Comment
  POM310930  Oenothera deltoides subsp. howellii P. D. Hurd 1952-5-26 s.n. Contra Costa 1 mile east of Antioch in sand dunes, near western margin of San Joaquan River close to its mouth 30 Comment
  POM355600  Oenothera deltoides subsp. howellii Peter H. Raven 1965-5-9 20181 Contra Costa Antioch dunes Comment
  RSA119427  Oenothera deltoides subsp. howellii William M. Klein 1958-6-9 432 Contra Costa Sandhills N of Antoch, along the San Joaquin River Channel. 2 Comment
  RSA144914  Oenothera deltoides subsp. howellii Peter Rubtzoff 1954-9-14 1756 Contra Costa Sand dunes along lower San Joaquin River, east of Antioch. Comment
  RSA34666  Oenothera deltoides subsp. howellii P. A. Munz 1947-10-8 12201 Contra Costa Sand dunes east of Antioch 8 Comment
  RSA41319  Oenothera deltoides subsp. howellii Robert F. Hoover 1937-5-14 2112 Contra Costa Antioch sand-dunes Comment
  UC1073376  Oenothera deltoides subsp. howellii George B. Rossbach 1955-5-22 369 Contra Costa dunes near bank of San Joaquin River (e edge of Antioch); Antioch Comment
  UC1084504  Oenothera deltoides subsp. howellii G. Thomas Robbins 1940-5-19 325 Contra Costa cliffs above river e Antioch; San Joaquin River Comment
  UC1241161  Oenothera deltoides subsp. howellii Wm. Klein 1958-6-9 442 Contra Costa sandhills just n Antioch (along the channel) Comment
  UC35412  Oenothera deltoides subsp. howellii Chesnut and Drew 1889-4-18 Contra Costa Sand Hills Antioch Comment
  UC635385  Oenothera deltoides subsp. howellii H. L. Mason 1929-3-31 5163 Contra Costa Antioch San Joaquin River (sand dike along river) Comment
  UC763071  Oenothera deltoides subsp. howellii R. F. Hoover 1937-5-14 2112 Contra Costa Antioch sand-dunes Comment
  UC914280  Oenothera deltoides subsp. howellii Verne Grant and Alva Grant 1947-4-13 7926 Contra Costa sand hills by river e Antioch Comment
  UC971924  Oenothera deltoides subsp. howellii P. D. Hurd 1952-5-26 Contra Costa one mi e Antioch (in sand dunes close to w margin of river near its mouth); San Joaquin River 30 Comment
  GH73052  Oenothera deltoides var. howellii A. Eastwood & J. T. Howell 1936-4-19 2147 Unknown Antioch, Sand dunes Comment
  JEPS43975  Oenothera elata subsp. hirsutissima W. L. Jepson 1924-10-17 10660 Sacramento Sherman Island Comment
  JEPS43976  Oenothera elata subsp. hirsutissima W. L. Jepson 1923-10-4 10225 Sacramento Sherman Isl. 0 Comment
  UC1584816  Oenothera elata subsp. hookeri Jerry Powell 1990-8-29 1590 Contra Costa Antioch National Wildlife Refuge Comment
  UCD40945  Oenothera laciniata Ron Unger 2004-3-30 s.n. Contra Costa Emerson parcel near Marsh Creek, just south of Big Break (flooded island) and Jersey Island area. North of town of Oakley and east of town of Antioch and 1 mile southwest of Dutch Slough. Comment
  CDA36713  Olea europaea D. G. Kelch 2010-10-5 10 .417 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UCD88427  Orcuttia viscida R. D. Stone; J. M. Erzinger 1986-6-16 725 Sacramento about 10 miles S of Folsom, E side of Grant Line Road, 0.6 mile N of its intersection with Kiefer Boulevard. 68 Comment
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May 28 2020
  SEINET219431 Image available Oryza sativa Unknown 1923-1 Sacramento Sacramento Valley Comment
  UC573135  Pectocarya penicillata H. L. Mason 1932-3-20 6845 Contra Costa Antioch sand hills Comment
  JEPS17394  Penstemon centranthifolius Rimo Bacigalupi with G. T. Robbins 1955-5-4 4984 Contra Costa about 1 1/4 mi e Antioch (near the San Joaquin River); near San Joaquin River, e of Antioch 9 Comment
  JEPS4477  Penstemon centranthifolius G. Thomas Robbins 1940-5-19 324 Contra Costa e Antioch; bordering San Joaquin River e of Antioch Comment
  NY583832  Penstemon centranthifolius L. S. Rose 1936-4-24 36158 Contra Costa 3 miles east of Antioch 15.2 Comment
  NY583859  Penstemon centranthifolius A. A. Heller 1908-4-16 8895 Contra Costa East of Antioch 22.9 Comment
  SBBG26831  Penstemon centranthifolius L. S. Rose 1936-4-24 36158 Contra Costa 3 mi E of Antioch 15 Comment
  UC566668  Penstemon centranthifolius H. L. Mason 1929-3-31 5156 Contra Costa sand dike along San Joaquin River (Antioch); sand dike along San Joaquin River, Antioch Comment
  UCR136718  Penstemon centranthifolius L. S. Rose 1936-4-24 36158 Contra Costa 3 mi east of Antioch 15 Comment
  UCD84913  Persicaria amphibia Chuck Hughes 2010-6-23 186 Sacramento 75 feet northwest of West Sherman Island Road. 0 Comment
  UCD84914  Persicaria punctata Chuck Hughes 2010-6-23 187 Sacramento 75 feet northwest of West Sherman Island Road. 0 Comment
  JEPS2399  Phacelia distans R. F. Hoover 1937-5-14 2116 Contra Costa Antioch sand-dunes Comment
  JEPS73329  Phacelia distans Edward Lee 1935-3-10 1297 A Contra Costa e Antioch; Antioch Sand Dunes Comment
  UC1084500  Phacelia distans G. Thomas Robbins 1940-5-19 321 Contra Costa e Antioch (sand hills bordering river); San Joaquin River Comment
  UC762051  Phacelia distans R. F. Hoover 1937-5-14 2116 Contra Costa Antioch sand-dunes Comment
  UC24356  Phacelia douglasii The Postmaster 1900-3-24 Contra Costa Oakley Comment
  UC672340  Phacelia douglasii Herbert L. Mason 1929-3-31 5161 Contra Costa dunes along river near Antioch; San Joaquin River Comment
  UC672342  Phacelia douglasii H. L. Mason 1932-3-20 6838 Contra Costa Antioch Sand Hills Comment
  UCD89827  Phragmites australis Thomas W. Davies 1964-9-1 s.n. Sacramento Sherman Island. Comment
  UCD89830  Phragmites australis August L. Hormay 1933-9-4 s.n. Sacramento Sherman Island. North foot of Antioch Bridge. Comment
  CDA2311  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch. 0 Comment
  UC1789168  Phyllostachys aurea Barbara Ertter 2001-5-26 17652 Contra Costa Stamm Unit of Antioch Dunes National Wildlife Refuge east of Antioch, single well-established clump at base of river bank. Comment
  UC573071  Plagiobothrys tenellus H. L. Mason 1932-3-20 6847 Contra Costa Antioch sand hills Comment
  UCD90801  Poa secunda subsp. secunda Beecher Crampton 1957-5-2 3971 Sacramento Whiterock. Comment
  UC1594171  Polygonum punctatum Jerry Powell 1991-6-29 1610 Contra Costa Antioch National Wildlife Refuge; intertidal zone Comment
  JEPS95765  Polygonum ramosissimum Dianne Lake 1999-10-5 Contra Costa NW end of wetland at NE corner of Plymouth and Hillcrest, 1 block N of E 18th St. Antioch 3 Comment
  CAS-BOT-BC158576  Prunus Walter Knight 1965-3-1 s.n. Contra Costa Antioch Dunes Comment
  CDA33067  Prunus dulcis D. G. Kelch 2010-10-5 10 .415 Contra Costa The Delta; Just east of Antioch bridge. Comment
  CAS-BOT-BC45657  Quercus agrifolia John Thomas Howell 1926-12-27 2274 Contra Costa Near Oakley Comment
  CDA32855  Quercus agrifolia D. G. Kelch 2010-10-5 10 .416 Contra Costa The Delta; Just east of Antioch bridge. Comment
  UCD45098  Quercus agrifolia John M. Burns 1959-3-4 s.n. Contra Costa Sand dunes along south side of San Joaquin River, just east of Antioch, Contra Costa County, California. Comment
  UCD83548  Quercus agrifolia Alison McNally 2009-5-9 s. n. Contra Costa Antioch, southern shore of San Joaquin River, Antioch Dunes National Wildlife Refuge. Comment
  CAS-BOT-BC74269  Raphanus sativus Walter Knight 1965-3-1 908 Contra Costa Antioch Dunes. Comment
  UC1584666  Rosa californica Jerry Powell 1990-8-29 1593 Contra Costa on riverine floodplain Antioch National Wildlife Reguge Comment
  CAS-BOT-BC129553  Salix lasiolepis var. lasiolepis Walter Knight 1965-3-1 899 Contra Costa Antioch dunes, by water's edge - north side of dunes Comment
  CAS-BOT-BC129554  Salix lasiolepis var. lasiolepis Walter Knight 1965-3-1 s.n. Contra Costa Antioch dunes, by water's edge - Carquinez Straights Comment
  JEPS623  Salsola tragus W. L. Jepson 1945-11-11 27571 Contra Costa Antioch Sandhills Comment
  JEPS79009  Salsola tragus Edward Lee with Annetta Carter 1935-8-17 1618 Contra Costa just e. Antioch Comment
  JEPS79010  Salsola tragus Edward Lee with Annetta Carter 1935-8-17 1619 Contra Costa just e. Antioch Comment
  JEPS79398  Salsola tragus Edward Lee with Annetta Carter 1935-8-17 1635 Contra Costa Antioch sand dunes Comment
  CAS-BOT-BC238635  Sambucus nigra subsp. caerulea Walter Knight 1965-3-1 894 Contra Costa Antioch dunes Comment
  UC1178021  Samolus parviflorus Herbert L. Mason 1955-7-14 14634 Contra Costa 1/2 mi e of Antioch Bridge Comment
  UCD84919  Samolus parviflorus Chuck Hughes 2010-6-23 192 Sacramento 75 feet northwest of West Sherman Island Road. 0 Comment
  CAS-BOT-BC111463  Schoenoplectus californicus Walter Knight; Irja Knight 1977-5-22 s.n. Contra Costa Growing at site of little corral. Antioch Dunes. Comment
  CAS-BOT-BC111464  Schoenoplectus californicus Walter Knight; Irja Knight 1977-6-18 s.n. Contra Costa On shore of San Joaquin River, Antioch sand dunes, Little Corral site. Comment
  SD134082  Schoenoplectus californicus Walter Knight, Irja Knight 1977-6-18 Contra Costa On shore of San Joaquin River, Antioch sand dunes, Little Corral site. Growing in water at high tide. Comment
  JEPS19398  Senecio flaccidus var. douglasii G. Thomas Robbins 1940-5-19 326 Contra Costa e of Antioch (hills bordering San Joaquin River); San Joaquin River Comment
  UC1584828  Senecio hydrophilus Jerry Powell 1990-8-29 1588 Contra Costa Antioch National Wildlife Refuge Comment
  UC1093588  Sium suave L. Constance, C. R. Bell and Hsuan Keng 1957-8-21 3658 Sacramento 0.5 mi e of Antioch Bridge (Sherman Island, margin of San Joaquin River); Sherman Island, San Joaquin River Comment
  UC1093589  Sium suave L. Constance, C. R. Bell and Hsuan Keng 1957-8-21 3658 Sacramento 0.5 mi e of Antioch Bridge (Sherman Island, margin of San Joaquin River); Sherman Island, San Joaquin River Comment
  UC456217  Solanum umbelliferum I. J. Condit 1908-8-20 Contra Costa Oakley Comment
  SBBG42912  Stephanomeria exigua subsp. coronaria L. D. Gottlieb 1969-11-2 6959 Contra Costa E of Antioch, W of Kaiser Gypsum Plant at Minaker and Wilbur Rds Comment
Read comments
Feb 12 2013
  UC1422530  Symphyotrichum lentum Alice Q. Howard and W. R. Powell 1977-6-1 38 Contra Costa Antioch Dunes, within PG&E-owned strip under eastern power line Comment
  UC1544787  Symphyotrichum lentum Almut G. Jones 1986-8-26 7277 Sacramento just n, near Contra Costa/Sacramento County line Antioch Toll Bridge Comment
  UC1560437  Symphyotrichum lentum Craig Martz 1988-7-6 278 Sacramento Horseshoe Bend, between Emma and Emmaton Sherman Island 0 Comment
  UC1594169  Symphyotrichum lentum Jerry Powell 1991-8-15 1613 Contra Costa Antioch National Wildlife Refuge Comment
  UCD136617  Symphyotrichum lentum Craig Martz 1988-7-6 278 Sacramento Sherman Island. Along south bank of Horseshoe Bend between Emma and Emmaton. 0 Comment
  UCD84917  Symphyotrichum lentum Chuck Hughes 2010-6-23 190 Sacramento 75 feet northwest of West Sherman Island Road. 0 Comment
  CAS-BOT-BC88259  Thysanocarpus curvipes Robert F. Hoover 1935-3-10 310 Contra Costa Antioch sand dunes. Comment
  JEPS68963  Thysanocarpus curvipes Edward Lee 1935-3-10 1295 Contra Costa e. Antioch (Antioch Sand Dunes); Antioch Sand Dunes Comment
  UCR143524  Thysanocarpus curvipes L. S. Rose 1933-4-17 33096 Contra Costa Antioch 30 Comment
  UC1776772  Tribulus terrestris T. C. Fuller 1961-9-13 6999 Contra Costa Almond orchard, S of hwy 4, 0.1 mi W of Antioch Bridge Rd., 2 mi W of Oakley. Comment
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Sep 1 2011
  UC555448  Trifolium gracilentum H. L. Mason 1929-3-31 5150 Contra Costa along San Joaquin River; Antioch Comment
  UC555459  Trifolium gracilentum H. L. Mason 1932-3-20 6844 Contra Costa Antioch sand hills Comment
  JEPS68961  Tropidocarpum gracile Edward Lee 1935-3-10 1239 Contra Costa e. Antioch (Antioch Sand Dunes); Antioch Sand Dunes Comment
  UC673302  Tropidocarpum gracile H. L. Mason 1932-3-20 6842 Contra Costa Antioch sand hills Comment
  UC673305  Tropidocarpum gracile H. L. Mason 1929-3-31 5152 Contra Costa sand dike along river at Antioch; San Joaquin River Comment
  JEPS35667  Uropappus lindleyi W. L. Jepson 1931-4-5 15715 Contra Costa Oakley 18 Comment
  JEPS39057  Verbena hastata W. L. Jepson 1923-10-4 10215 Sacramento lower San Joaquin, Sherman Island Sherman Island; San Joaquin, Sherman Island 3 Comment
  UC454110  Verbena hastata I. J. Condit 1908-8-20 Contra Costa Oakley Comment
  JEPS68962  Vulpia myuros var. hirsuta Edward Lee 1935-3-10 1294 Contra Costa e of Antioch (Antioch Sand Dunes); Antioch Sand Dunes Comment
  JEPS37541  Xanthium strumarium W. L. Jepson 1923-10-4 10213 Contra Costa Sherman Island ferry Antioch Shore, Sherman Island ferry Comment



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