California

• Alameda 06001
  1,856 taxa Open ↗
• Alpine 06003
  1,174 taxa Open ↗
• Amador 06005
  1,226 taxa Open ↗
• Butte 06007
  2,704 taxa Open ↗
• Calaveras 06009
  1,227 taxa Open ↗
• Colusa 06011
  1,330 taxa Open ↗
• Contra Costa 06013
  1,712 taxa Open ↗
• Del Norte 06015
  1,424 taxa Open ↗
• El Dorado 06017
  1,950 taxa Open ↗
• Fresno 06019
  2,373 taxa Open ↗

Showing 8,851–8,900 of 9,954.

• 
  Senna artemisioides (Gaudich. ex DC.) Randell ssp. ×coriacea (Benth.) Randell [? × cardiosperma ssp. gawlerensis] Introduced SEARC

  scented senna · Fabaceae 1 county
• 
  Senna covesii (A. Gray) Irwin & Barneby Native SECO10

  Coues' cassia · Fabaceae 4 counties
• 
  Senna didymobotrya (Fresen.) Irwin & Barneby Introduced SEDI8

  African senna · Fabaceae 2 counties
• 
  Senna multiglandulosa (Jacq.) Irwin & Barneby Introduced SEMU14

  glandular senna · Fabaceae 5 counties
• 
  Senna obtusifolia (L.) Irwin & Barneby Native SEOB4

  Java-bean · Fabaceae 3 counties
• 
  Sequoia sempervirens (Lamb. ex D. Don) Endl. Native SESE3

  redwood · Cupressaceae 13 counties
• 
  Sequoiadendron giganteum (Lindl.) J. Buchholz Native SEGI2

  giant sequoia · Cupressaceae 10 counties
• 
  Sericocarpus oregonensis Nutt. Native SEOR6

  Oregon whitetop aster · Asteraceae 18 counties
• 
  Sericocarpus oregonensis Nutt. var. californicus (Durand) G.L. Nesom Native SEORC2

  Oregon whitetop aster · Asteraceae 12 counties
• 
  Sericocarpus oregonensis Nutt. var. oregonensis Native SEORO2

  Oregon whitetop aster · Asteraceae 5 counties
• 
  Sesamum orientale L. Introduced SEOR4

  sesame · Pedaliaceae 2 counties
• 
  Sesbania herbacea (Mill.) McVaugh Native SEHE8

  bigpod sesbania · Fabaceae 3 counties
• 
  Sesbania punicea (Cav.) Benth. Introduced SEPU7

  rattlebox · Fabaceae 4 counties
• 
  Sesuvium verrucosum Raf. Native SEVE2

  verrucose seapurslane · Aizoaceae 14 counties
• 
  Setaria faberi Herrm. Introduced SEFA

  Japanese bristlegrass · Poaceae 5 counties
• 
  Setaria italica (L.) P. Beauv. Introduced SEIT

  foxtail millet · Poaceae 2 counties
• 
  Setaria parviflora (Poir.) Kerguélen Native SEPA10

  marsh bristlegrass · Poaceae 32 counties
• 
  Setaria sphacelata (Schumach.) Stapf & C.E. Hubb. ex M.B. Moss Introduced SESP5

  African bristlegrass · Poaceae 6 counties
• 
  Setaria verticillata (L.) P. Beauv. Introduced SEVE3

  hooked bristlegrass · Poaceae 13 counties
• 
  Setaria viridis (L.) P. Beauv. Introduced SEVI4

  green bristlegrass · Poaceae 35 counties
• 
  Setaria viridis (L.) P. Beauv. var. viridis Introduced SEVIV

  green bristlegrass · Poaceae 34 counties
• 
  Shepherdia argentea (Pursh) Nutt. Native SHAR

  silver buffaloberry · Elaeagnaceae 7 counties
• 
  Shepherdia canadensis (L.) Nutt. Native SHCA

  russet buffaloberry · Elaeagnaceae 1 county
• 
  Sherardia arvensis L. Introduced SHAR2

  blue fieldmadder · Rubiaceae 27 counties
• 
  Sibara deserti (M.E. Jones) Rollins Native SIDE

  desert winged rockcress · Brassicaceae 1 county
• 
  Sibara filifolia (Greene) Greene Native SIFI

  Santa Cruz Island winged rockcress · Brassicaceae 2 counties
• 
  Sibara rosulata Rollins Native SIRO

  California winged rockcress · Brassicaceae 2 counties
• 
  Sibara virginica (L.) Rollins Native SIVI2

  Virginia winged rockcress · Brassicaceae 12 counties
• 
  Sibaropsis hammittii S. Boyd & T.S. Ross Native SIHA8

  Hammitt's claycress · Brassicaceae 2 counties
• 
  Sibbaldia procumbens L. Native SIPR

  creeping sibbaldia · Rosaceae 20 counties
• 
  Sida rhombifolia L. Native SIRH

  Cuban jute · Malvaceae 2 counties
• 
  Sida spinosa L. Native SISP

  prickly fanpetals · Malvaceae 1 county
• 
  Sidalcea asprella Greene Native SIAS4

  dwarf checkerbloom · Malvaceae 18 counties
• 
  Sidalcea asprella Greene ssp. asprella Native SIASA2

  dwarf checkerbloom · Malvaceae 17 counties
• 
  Sidalcea asprella Greene ssp. nana (Jeps.) S.R. Hill Native SIASN

  dwarf checkerbloom · Malvaceae 3 counties
• 
  Sidalcea calycosa M.E. Jones Native SICA

  annual checkerbloom · Malvaceae 16 counties
• 
  Sidalcea calycosa M.E. Jones ssp. calycosa Native SICAC3

  annual checkerbloom · Malvaceae 16 counties
• 
  Sidalcea calycosa M.E. Jones ssp. rhizomata (Jeps.) Munz Native SICAR

  Pt. Reyes checkerbloom · Malvaceae 3 counties
• ⚘
  Sidalcea celata (Jeps.) S.R. Hill Native SICE3

  dwarf checkerbloom · Malvaceae 2 counties
• 
  Sidalcea covillei Greene Native SICO2

  Owens Valley sidalcea · Malvaceae 1 county
• 
  Sidalcea diploscypha (Torr. & A. Gray) A. Gray Native SIDI

  fringed checkerbloom · Malvaceae 24 counties
• ⚘
  Sidalcea elegans Greene Native SIEL2

  dwarf checkerbloom · Malvaceae 2 counties
• 
  Sidalcea gigantea G. Clifton, R.E. Buck, & S.R. Hill Native SIGI

  giant checkerbloom · Malvaceae 5 counties
• 
  Sidalcea glaucescens Greene Native SIGL2

  waxy checkerbloom · Malvaceae 16 counties
• 
  Sidalcea hartwegii A. Gray ex Benth. Native SIHA

  valley checkerbloom · Malvaceae 24 counties
• 
  Sidalcea hickmanii Greene Native SIHI

  chaparral checkerbloom · Malvaceae 8 counties
• 
  Sidalcea hickmanii Greene ssp. anomala C.L. Hitchc. Native SIHIA

  Cuesta Pass checker · Malvaceae 1 county
• 
  Sidalcea hickmanii Greene ssp. hickmanii Native SIHIH

  Hickman's checkerbloom · Malvaceae 1 county
• 
  Sidalcea hickmanii Greene ssp. parishii (B.L. Rob.) C.L. Hitchc. Native SIHIP

  Parish's checker · Malvaceae 3 counties
• 
  Sidalcea hickmanii Greene ssp. viridis C.L. Hitchc. Native SIHIV

  Marin checkerbloom · Malvaceae 4 counties