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 8,551–8,600 of 9,954.

• 
  Sairocarpus vexillocalyculatus (Kellogg) D.A. Sutton Native SAVE7

  wiry snapdragon · Scrophulariaceae 36 counties
• 
  Sairocarpus virga (A. Gray) D.A. Sutton Native SAVI8

  tall snapdragon · Scrophulariaceae 4 counties
• 
  Salazaria mexicana Torr. Native SAME

  Mexican bladdersage · Lamiaceae 7 counties
• 
  Salicornia bigelovii Torr. Native SABI

  dwarf saltwort · Chenopodiaceae 5 counties
• 
  Salicornia depressa Standl. Native SADE10

  Virginia glasswort · Chenopodiaceae 21 counties
• 
  Salicornia rubra A. Nelson Native SARU

  red swampfire · Chenopodiaceae 1 county
• 
  Salix alba L. Introduced SAAL2

  white willow · Salicaceae 56 counties
• 
  Salix bebbiana Sarg. Native SABE2

  Bebb willow · Salicaceae 4 counties
• 
  Salix boothii Dorn Native SABO2

  Booth's willow · Salicaceae 13 counties
• 
  Salix brachycarpa Nutt. Native SABR

  shortfruit willow · Salicaceae 1 county
• 
  Salix brachycarpa Nutt. var. brachycarpa Native SABRB7

  shortfruit willow · Salicaceae 1 county
• 
  Salix breweri Bebb Native SABR2

  Brewer's willow · Salicaceae 10 counties
• 
  Salix delnortensis C.K. Schneid. Native SADE2

  Del Norte willow · Salicaceae 2 counties
• 
  Salix drummondiana Barratt ex Hook. Native SADR

  Drummond's willow · Salicaceae 6 counties
• 
  Salix eastwoodiae Cockerell ex A. Heller Native SAEA

  mountain willow · Salicaceae 20 counties
• 
  Salix exigua Nutt. Native SAEX

  narrowleaf willow · Salicaceae 56 counties
• 
  Salix geyeriana Andersson Native SAGE2

  Geyer willow · Salicaceae 23 counties
• 
  Salix gooddingii C.R. Ball Native SAGO

  Goodding's willow · Salicaceae 31 counties
• 
  Salix hookeriana Barratt ex Hook. Native SAHO

  dune willow · Salicaceae 5 counties
• 
  Salix jepsonii C.K. Schneid. Native SAJE

  Jepson's willow · Salicaceae 18 counties
• 
  Salix laevigata Bebb Native SALA3

  red willow · Salicaceae 52 counties
• 
  Salix lasiolepis Benth. Native SALA6

  arroyo willow · Salicaceae 57 counties
• 
  Salix lasiolepis Benth. var. bigelovii (Torr.) Bebb Native SALAB

  Bigelow's willow · Salicaceae 5 counties
• 
  Salix lasiolepis Benth. var. lasiolepis Native SALAL2

  arroyo willow · Salicaceae 7 counties
• 
  Salix lemmonii Bebb Native SALE

  Lemmon's willow · Salicaceae 25 counties
• 
  Salix ligulifolia (C.R. Ball) C.R. Ball ex C.K. Schneid. Native SALI

  strapleaf willow · Salicaceae 12 counties
• 
  Salix lucida Muhl. Native SALU

  shining willow · Salicaceae 55 counties
• 
  Salix lucida Muhl. ssp. caudata (Nutt.) A.E. Murray Native SALUC

  greenleaf willow · Salicaceae 7 counties
• 
  Salix lucida Muhl. ssp. lasiandra (Benth.) A.E. Murray Native SALUL

  Pacific willow · Salicaceae 55 counties
• 
  Salix lutea Nutt. Native SALU2

  yellow willow · Salicaceae 13 counties
• 
  Salix melanopsis Nutt. Native SAME2

  dusky willow · Salicaceae 37 counties
• 
  Salix nivalis Hook. Native SANI8

  snow willow · Salicaceae 1 county
• 
  Salix orestera C.K. Schneid. Native SAOR

  Sierra willow · Salicaceae 17 counties
• 
  Salix petrophila Rydb. Native SAPE18

  alpine willow · Salicaceae 11 counties
• 
  Salix planifolia Pursh Native SAPL2

  diamondleaf willow · Salicaceae 9 counties
• 
  Salix planifolia Pursh ssp. planifolia Native SAPLP4

  diamondleaf willow · Salicaceae 9 counties
• 
  Salix prolixa Andersson Native SAPR3

  MacKenzie's willow · Salicaceae 8 counties
• 
  Salix scouleriana Barratt ex Hook. Native SASC

  Scouler's willow · Salicaceae 42 counties
• 
  Salix sessilifolia Nutt. Native SASE3

  northwest sandbar willow · Salicaceae 2 counties
• 
  Salix sitchensis Sanson ex Bong. Native SASI2

  Sitka willow · Salicaceae 19 counties
• ⚘
  Salix ×pendulina Wender. [babylonica × euxina] Introduced SAPE12

  Wisconsin weeping willow · Salicaceae 1 county
• ⚘
  Salix ×sepulcralis Simonkai [alba × babylonica] Introduced SASE10

  weeping willow · Salicaceae 3 counties
• 
  Salpichroa origanifolia (Lam.) Thell. Introduced SAOR4

  lily of the valley vine · Solanaceae 16 counties
• 
  Salsola kali L. Introduced SAKA

  Russian thistle · Chenopodiaceae 4 counties
• 
  Salsola kali L. ssp. pontica (Pall.) Mosyakin Introduced SAKAP

  Russian thistle · Chenopodiaceae 3 counties
• 
  Salsola paulsenii Litv. Introduced SAPA8

  barbwire Russian thistle · Chenopodiaceae 8 counties
• 
  Salsola soda L. Introduced SASO3

  oppositeleaf Russian thistle · Chenopodiaceae 4 counties
• 
  Salsola tragus L. Introduced SATR12

  prickly Russian thistle · Chenopodiaceae 35 counties
• 
  Salsola vermiculata L. Introduced SAVE6

  shrubby Russian thistle · Chenopodiaceae 2 counties
• 
  Saltugilia australis (H. Mason & A.D. Grant) L.A. Johnson Native SAAU11

  southern gilia · Polemoniaceae 4 counties