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 7,601–7,650 of 8,499 (native).

• 
  Senecio astephanus Greene Native SEAS2

  San Gabriel ragwort · Asteraceae 6 counties
• 
  Senecio blochmaniae Greene Native SEBL

  dune ragwort · Asteraceae 2 counties
• 
  Senecio californicus DC. Native SECA

  California ragwort · Asteraceae 14 counties
• 
  Senecio clarkianus A. Gray Native SECL

  Clark's ragwort · Asteraceae 7 counties
• 
  Senecio flaccidus Less. Native SEFL3

  threadleaf ragwort · Asteraceae 33 counties
• 
  Senecio flaccidus Less. var. douglasii (DC.) B.L. Turner & T.M. Barkley Native SEFLD

  Douglas' ragwort · Asteraceae 32 counties
• 
  Senecio flaccidus Less. var. monoensis (Greene) B.L. Turner & T.M. Barkley Native SEFLM

  smooth threadleaf ragwort · Asteraceae 7 counties
• 
  Senecio fremontii Torr. & A. Gray Native SEFR3

  dwarf mountain ragwort · Asteraceae 16 counties
• 
  Senecio fremontii Torr. & A. Gray var. fremontii Native SEFRF

  dwarf mountain ragwort · Asteraceae 3 counties
• 
  Senecio fremontii Torr. & A. Gray var. occidentalis A. Gray Native SEFRO

  dwarf mountain ragwort · Asteraceae 13 counties
• 
  Senecio hydrophiloides Rydb. Native SEHY

  tall groundsel · Asteraceae 5 counties
• 
  Senecio hydrophilus Nutt. Native SEHY2

  water ragwort · Asteraceae 21 counties
• 
  Senecio integerrimus Nutt. Native SEIN2

  lambstongue ragwort · Asteraceae 30 counties
• 
  Senecio integerrimus Nutt. var. exaltatus (Nutt.) Cronquist Native SEINE

  Columbia ragwort · Asteraceae 26 counties
• 
  Senecio integerrimus Nutt. var. major (A. Gray) Cronquist Native SEINM

  lambstongue ragwort · Asteraceae 23 counties
• 
  Senecio integerrimus Nutt. var. ochroleucus (A. Gray) Cronquist Native SEINO

  paleyellow ragwort · Asteraceae 6 counties
• 
  Senecio lyonii A. Gray Native SELY

  island senecio · Asteraceae 1 county
• 
  Senecio mohavensis A. Gray Native SEMO3

  Mojave ragwort · Asteraceae 5 counties
• 
  Senecio pattersonensis Hoover Native SEPA3

  Mono ragwort · Asteraceae 1 county
• 
  Senecio scorzonella Greene Native SESC

  Sierra ragwort · Asteraceae 13 counties
• 
  Senecio serra Hook. Native SESE2

  tall ragwort · Asteraceae 13 counties
• 
  Senecio serra Hook. var. serra Native SESES

  tall ragwort · Asteraceae 13 counties
• 
  Senecio spartioides Torr. & A. Gray Native SESP3

  broom-like ragwort · Asteraceae 4 counties
• 
  Senecio spartioides Torr. & A. Gray var. spartioides Native SESPS2

  broom-like ragwort · Asteraceae 4 counties
• 
  Senecio triangularis Hook. Native SETR

  arrowleaf ragwort · Asteraceae 32 counties
• 
  Senegalia greggii (A. Gray) Britton & Rose Native SEGR4

  catclaw acacia · Fabaceae 8 counties
• 
  Senna armata (S. Watson) Irwin & Barneby Native SEAR8

  desertsenna · Fabaceae 6 counties
• 
  Senna covesii (A. Gray) Irwin & Barneby Native SECO10

  Coues' cassia · Fabaceae 4 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
• 
  Sesbania herbacea (Mill.) McVaugh Native SEHE8

  bigpod sesbania · Fabaceae 3 counties
• 
  Sesuvium verrucosum Raf. Native SEVE2

  verrucose seapurslane · Aizoaceae 14 counties
• 
  Setaria parviflora (Poir.) Kerguélen Native SEPA10

  marsh bristlegrass · Poaceae 32 counties
• 
  Shepherdia argentea (Pursh) Nutt. Native SHAR

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

  russet buffaloberry · Elaeagnaceae 1 county
• 
  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