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 51–100 of 9,954.

• 
  Acanthomintha lanceolata Curran Native ACLA2

  Santa Clara thorn-mint · Lamiaceae 7 counties
• 
  Acanthomintha obovata Jeps. Native ACOB

  San Benito thorn-mint · Lamiaceae 7 counties
• 
  Acanthomintha obovata Jeps. ssp. cordata Jokerst Native ACOBC

  heartleaf thorn-mint · Lamiaceae 5 counties
• 
  Acanthomintha obovata Jeps. ssp. obovata Native ACOBO

  San Benito thorn-mint · Lamiaceae 4 counties
• 
  Acanthus mollis L. Introduced ACMO8

  bear's breech · Acanthaceae 1 county
• 
  Acer campestre L. Introduced ACCA5

  hedge maple · Aceraceae 1 county
• 
  Acer circinatum Pursh Native ACCI

  vine maple · Aceraceae 10 counties
• 
  Acer glabrum Torr. Native ACGL

  Rocky Mountain maple · Aceraceae 28 counties
• 
  Acer glabrum Torr. var. diffusum (Greene) Smiley Native ACGLD3

  Rocky Mountain maple · Aceraceae 5 counties
• 
  Acer glabrum Torr. var. greenei Keller Native ACGLG

  Greene's maple · Aceraceae 1 county
• 
  Acer glabrum Torr. var. torreyi (Greene) Smiley Native ACGLT2

  Torrey maple · Aceraceae 13 counties
• 
  Acer macrophyllum Pursh Native ACMA3

  bigleaf maple · Aceraceae 44 counties
• 
  Acer negundo L. Native ACNE2

  boxelder · Aceraceae 36 counties
• 
  Acer negundo L. var. californicum (Torr. & A. Gray) Sarg. Native ACNEC2

  California boxelder · Aceraceae 35 counties
• 
  Acer negundo L. var. interius (Britton) Sarg. Native ACNEI2

  boxelder · Aceraceae 10 counties
• 
  Acer saccharinum L. Native ACSA2

  silver maple · Aceraceae 3 counties
• 
  Achillea filipendulina Lam. Introduced ACFI

  fernleaf yarrow · Asteraceae 2 counties
• 
  Achillea millefolium L. Both ACMI2

  common yarrow · Asteraceae 54 counties
• 
  Achillea millefolium L. var. alpicola (Rydb.) Garrett Native ACMIA

  common yarrow · Asteraceae 5 counties
• 
  Achillea millefolium L. var. arenicola (A. Heller) Nobs Native ACMIA2

  common yarrow · Asteraceae 8 counties
• 
  Achillea millefolium L. var. californica (Pollard) Jeps. Native ACMIC

  California yarrow · Asteraceae 13 counties
• 
  Achillea millefolium L. var. gigantea (Pollard) Nobs Native ACMIG

  giant yarrow · Asteraceae 4 counties
• 
  Achillea millefolium L. var. occidentalis DC. Native ACMIO

  western yarrow · Asteraceae 15 counties
• 
  Achillea millefolium L. var. pacifica (Rydb.) G.N. Jones Native ACMIP

  Pacific yarrow · Asteraceae 3 counties
• 
  Achillea millefolium L. var. puberula (Rydb.) Nobs Native ACMIP2

  common yarrow · Asteraceae 3 counties
• 
  Achlys californica I. Fukuda & H.G. Baker Native ACCA6

  deer's foot · Berberidaceae 5 counties
• 
  Achlys triphylla (Sm.) DC. Native ACTR

  sweet after death · Berberidaceae 5 counties
• 
  Achnatherum aridum (M.E. Jones) Barkworth Native ACAR14

  Mormon needlegrass · Poaceae 3 counties
• 
  Achnatherum brachychaetum (Godr.) Barkworth Introduced ACBR5

  shortbristled needlegrass · Poaceae 7 counties
• 
  Achnatherum capense (Thunb.) P. Beauv. Introduced ACCA34

  Cape ricegrass · Poaceae 1 county
• 
  Achnatherum coronatum (Thurb.) Barkworth Native ACCO21

  giant ricegrass · Poaceae 12 counties
• 
  Achnatherum diegoense (Swallen) Barkworth Native ACDI10

  San Diego needlegrass · Poaceae 3 counties
• 
  Achnatherum hymenoides (Roem. & Schult.) Barkworth Native ACHY

  Indian ricegrass · Poaceae 24 counties
• 
  Achnatherum latiglume (Swallen) Barkworth Native ACLA8

  Sierra needlegrass · Poaceae 3 counties
• 
  Achnatherum lemmonii (Vasey) Barkworth Native ACLE8

  Lemmon's needlegrass · Poaceae 31 counties
• 
  Achnatherum lemmonii (Vasey) Barkworth var. lemmonii Native ACLEL

  Lemmon's needlegrass · Poaceae 31 counties
• 
  Achnatherum lemmonii (Vasey) Barkworth var. pubescens (Crampton) Barkworth Native ACLEP

  pubescent Lemmon's needlegrass · Poaceae 2 counties
• 
  Achnatherum lettermanii (Vasey) Barkworth Native ACLE9

  Letterman's needlegrass · Poaceae 11 counties
• 
  Achnatherum nelsonii (Scribn.) Barkworth Native ACNE9

  Columbia needlegrass · Poaceae 18 counties
• 
  Achnatherum nelsonii (Scribn.) Barkworth ssp. dorei (Barkworth & Maze) Barkworth Native ACNED

  Dore's needlegrass · Poaceae 18 counties
• 
  Achnatherum nevadense (B.L. Johnson) Barkworth Native ACNE10

  Nevada needlegrass · Poaceae 10 counties
• 
  Achnatherum occidentale (Thurb.) Barkworth Native ACOC3

  western needlegrass · Poaceae 33 counties
• 
  Achnatherum occidentale (Thurb.) Barkworth ssp. californicum (Merr. & Burtt Davy) Barkworth Native ACOCC

  California needlegrass · Poaceae 30 counties
• 
  Achnatherum occidentale (Thurb.) Barkworth ssp. occidentale Native ACOCO

  western needlegrass · Poaceae 25 counties
• 
  Achnatherum occidentale (Thurb.) Barkworth ssp. pubescens (Vasey) Barkworth Native ACOCP

  pubescent western needlegrass · Poaceae 23 counties
• 
  Achnatherum parishii (Vasey) Barkworth Native ACPA13

  Parish's needlegrass · Poaceae 6 counties
• 
  Achnatherum parishii (Vasey) Barkworth var. parishii Native ACPAP

  Parish's needlegrass · Poaceae 6 counties
• 
  Achnatherum pinetorum (M.E. Jones) Barkworth Native ACPI2

  pine needlegrass · Poaceae 7 counties
• 
  Achnatherum speciosum (Trin. & Rupr.) Barkworth Native ACSP12

  desert needlegrass · Poaceae 15 counties
• 
  Achnatherum stillmanii (Bol.) Barkworth Native ACST7

  Stillman's needlegrass · Poaceae 9 counties