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 201–250 of 9,954.

• 
  Agrostis pauzhetica Prob. Native AGPA9

  Thermal Bent · Poaceae 1 county
• 
  Agrostis perennans (Walter) Tuck. Native AGPE

  upland bentgrass · Poaceae 7 counties
• 
  Agrostis scabra Willd. Native AGSC5

  rough bentgrass · Poaceae 26 counties
• 
  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae 35 counties
• 
  Agrostis variabilis Rydb. Native AGVA

  mountain bentgrass · Poaceae 26 counties
• 
  Ailanthus altissima (Mill.) Swingle Introduced AIAL

  tree of heaven · Simaroubaceae 35 counties
• 
  Aira caryophyllea L. Introduced AICA

  silver hairgrass · Poaceae 36 counties
• 
  Aira caryophyllea L. var. caryophyllea Introduced AICAC2

  silver hairgrass · Poaceae 1 county
• 
  Aira caryophyllea L. var. cupaniana (Guss.) Fiori Introduced AICAC3

  silver hairgrass · Poaceae 1 county
• 
  Aira elegans Willd. ex Kunth Introduced AIEL4

  annual silver hairgrass · Poaceae 10 counties
• 
  Aira praecox L. Introduced AIPR

  yellow hairgrass · Poaceae 6 counties
• 
  Albizia julibrissin Durazz. Introduced ALJU

  silktree · Fabaceae 1 county
• 
  Alcea rosea L. Introduced ALRO3

  hollyhock · Malvaceae 10 counties
• 
  Alhagi maurorum Medik. Introduced ALMA12

  camelthorn · Fabaceae 19 counties
• 
  Aliciella hutchinsifolia (Rydb.) J.M. Porter Native ALHU6

  desert pale gilia · Polemoniaceae 5 counties
• 
  Aliciella latifolia (S. Watson) J.M. Porter Native ALLA13

  broad-leaf gilia · Polemoniaceae 7 counties
• 
  Aliciella latifolia (S. Watson) J.M. Porter ssp. latifolia Native ALLAL3

  broadleaf gilia · Polemoniaceae 7 counties
• 
  Aliciella leptomeria (A. Gray) J.M. Porter Native ALLE7

  sand gilia · Polemoniaceae 7 counties
• 
  Aliciella lottiae (Day) J.M. Porter Native ALLO6

  Lott's gilia · Polemoniaceae 5 counties
• 
  Aliciella micromeria (A. Gray) J.M. Porter Native ALMI10

  dainty gilia · Polemoniaceae 4 counties
• 
  Aliciella ripleyi (Barneby) J.M. Porter Native ALRI3

  Ripley's gilia · Polemoniaceae 2 counties
• 
  Aliciella subacaulis (Rydb.) J.M. Porter & L.A. Johnson Native ALSU10

  pinyon gilia · Polemoniaceae 3 counties
• 
  Aliciella triodon (Eastw.) Brand Native ALTR14

  coyote gilia · Polemoniaceae 1 county
• 
  Alisma gramineum Lej. Native ALGR

  narrowleaf water plantain · Alismataceae 5 counties
• 
  Alisma lanceolatum With. Introduced ALLA2

  lanceleaf water plantain · Alismataceae 7 counties
• 
  Alisma subcordatum Raf. Native ALSU

  American water plantain · Alismataceae 32 counties
• 
  Alisma triviale Pursh Native ALTR7

  northern water plantain · Alismataceae 8 counties
• 
  Allenrolfea occidentalis (S. Watson) Kuntze Native ALOC2

  iodinebush · Chenopodiaceae 16 counties
• 
  Allionia incarnata L. Native ALIN

  trailing windmills · Nyctaginaceae 5 counties
• 
  Allium abramsii (Ownbey & Aase) McNeal Native ALAB2

  Abrams' allium · Liliaceae 3 counties
• 
  Allium acuminatum Hook. Native ALAC4

  tapertip onion · Liliaceae 10 counties
• 
  Allium ampeloprasum L. Introduced ALAM

  broadleaf wild leek · Liliaceae 1 county
• 
  Allium amplectens Hook. Native ALAM2

  narrowleaf onion · Liliaceae 40 counties
• 
  Allium anceps Kellogg Native ALAN

  twinleaf onion · Liliaceae 7 counties
• 
  Allium atrorubens S. Watson Native ALAT

  darkred onion · Liliaceae 5 counties
• 
  Allium atrorubens S. Watson var. atrorubens Native ALATA

  darkred onion · Liliaceae 2 counties
• 
  Allium atrorubens S. Watson var. cristatum (S. Watson) McNeal Native ALATC

  darkred onion · Liliaceae 3 counties
• 
  Allium bisceptrum S. Watson Native ALBI2

  twincrest onion · Liliaceae 12 counties
• 
  Allium bisceptrum S. Watson var. bisceptrum Native ALBIB

  twincrest onion · Liliaceae 12 counties
• 
  Allium bolanderi S. Watson Native ALBO

  Bolander's onion · Liliaceae 10 counties
• 
  Allium bolanderi S. Watson var. bolanderi Native ALBOB

  Bolander's onion · Liliaceae 2 counties
• 
  Allium bolanderi S. Watson var. mirabile (L.F. Hend.) McNeal Native ALBOM

  Bolander's onion · Liliaceae 10 counties
• 
  Allium bolanderi S. Watson var. stenanthum (E. Drew) Jeps. Native ALBOS

  Bolander's onion · Liliaceae 1 county
• 
  Allium burlewii Davidson Native ALBU

  Burlew's onion · Liliaceae 9 counties
• 
  Allium campanulatum S. Watson Native ALCA2

  dusky onion · Liliaceae 32 counties
• 
  Allium cepa L. Introduced ALCE

  garden onion · Liliaceae 1 county
• 
  Allium cratericola Eastw. Native ALCR3

  Cascade onion · Liliaceae 18 counties
• 
  Allium crispum Greene Native ALCR5

  crinkled onion · Liliaceae 11 counties
• 
  Allium denticulatum (Ownbey & Aase) McNeal Native ALDE6

  toothed onion · Liliaceae 4 counties
• 
  Allium diabolense (Ownbey & Aase) McNeal Native ALDI10

  serpentine onion · Liliaceae 7 counties