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 301–350 of 9,954.

• 
  Allium tribracteatum Torr. Native ALTR2

  threebract onion · Liliaceae 3 counties
• 
  Allium triquetrum L. Introduced ALTR4

  threecorner leek · Liliaceae 13 counties
• 
  Allium tuolumnense (Ownbey & Aase) S. Denison & McNeal Native ALTU

  Rawhide Hill onion · Liliaceae 1 county
• 
  Allium unifolium Kellogg Native ALUN

  oneleaf onion · Liliaceae 16 counties
• 
  Allium validum S. Watson Native ALVA

  Pacific onion · Liliaceae 26 counties
• 
  Allium vineale L. Introduced ALVI

  wild garlic · Liliaceae 16 counties
• 
  Allium vineale L. ssp. vineale Introduced ALVIV

  wild garlic · Liliaceae 16 counties
• 
  Allium yosemitense Eastw. Native ALYO

  Yosemite onion · Liliaceae 2 counties
• 
  Allophyllum divaricatum (Nutt.) A.D. Grant & V.E. Grant Native ALDI4

  purple false gilyflower · Polemoniaceae 36 counties
• 
  Allophyllum gilioides (Benth.) A.D. Grant & V.E. Grant Native ALGI

  dense false gilyflower · Polemoniaceae 38 counties
• 
  Allophyllum gilioides (Benth.) A.D. Grant & V.E. Grant ssp. gilioides Native ALGIG

  dense false gilyflower · Polemoniaceae 26 counties
• 
  Allophyllum gilioides (Benth.) A.D. Grant & V.E. Grant ssp. violaceum (A. Heller) Day Native ALGIV

  dense false gilyflower · Polemoniaceae 27 counties
• 
  Allophyllum glutinosum (Benth.) A.D. Grant & V.E. Grant Native ALGL3

  sticky false gilyflower · Polemoniaceae 10 counties
• 
  Allophyllum integrifolium (Brand) A.D. Grant & V.E. Grant Native ALIN3

  white false gilyflower · Polemoniaceae 23 counties
• 
  Allotropa virgata Torr. & A. Gray ex A. Gray Native ALVI2

  sugarstick · Monotropaceae 19 counties
• 
  Almutaster pauciflorus (Nutt.) Á. Löve & D. Löve Native ALPA14

  alkali marsh aster · Asteraceae 2 counties
• 
  Alnus cordata (Loisel.) Duby Introduced ALCO13

  Italian alder · Betulaceae 1 county
• 
  Alnus incana (L.) Moench Native ALIN2

  gray alder · Betulaceae 27 counties
• 
  Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Breitung Native ALINT

  thinleaf alder · Betulaceae 27 counties
• 
  Alnus rhombifolia Nutt. Native ALRH2

  white alder · Betulaceae 51 counties
• 
  Alnus rubra Bong. Native ALRU2

  red alder · Betulaceae 11 counties
• 
  Alnus viridis (Chaix) DC. Native ALVI5

  green alder · Betulaceae 5 counties
• 
  Alnus viridis (Chaix) DC. ssp. sinuata (Regel) Á. Löve & D. Löve Native ALVIS

  Sitka alder · Betulaceae 5 counties
• ⚘
  Aloe ×schoenlandi Baker [saporaria × striata] Introduced ALSC12

  aloe · Aloaceae 1 county
• 
  Alopecurus aequalis Sobol. Native ALAE

  shortawn foxtail · Poaceae 26 counties
• 
  Alopecurus aequalis Sobol. var. aequalis Native ALAEA

  shortawn foxtail · Poaceae 4 counties
• 
  Alopecurus aequalis Sobol. var. sonomensis P. Rubtzov Native ALAES

  Sonoma shortawn foxtail · Poaceae 2 counties
• 
  Alopecurus carolinianus Walter Native ALCA4

  Carolina foxtail · Poaceae 9 counties
• 
  Alopecurus geniculatus L. Introduced ALGE2

  water foxtail · Poaceae 18 counties
• 
  Alopecurus geniculatus L. var. geniculatus Introduced ALGEG4

  water foxtail · Poaceae 18 counties
• 
  Alopecurus myosuroides Huds. Introduced ALMY

  slender meadow foxtail · Poaceae 1 county
• 
  Alopecurus pratensis L. Introduced ALPR3

  meadow foxtail · Poaceae 12 counties
• 
  Alopecurus saccatus Vasey Native ALSA3

  Pacific foxtail · Poaceae 32 counties
• 
  Aloysia wrightii (A. Gray) A. Heller Native ALWR

  Wright's beebrush · Verbenaceae 1 county
• 
  Alternanthera caracasana Kunth Introduced ALCA5

  washerwoman · Amaranthaceae 4 counties
• 
  Alternanthera philoxeroides (Mart.) Griseb. Introduced ALPH

  alligatorweed · Amaranthaceae 5 counties
• 
  Alyssum alyssoides (L.) L. Introduced ALAL3

  pale madwort · Brassicaceae 10 counties
• 
  Alyssum desertorum Stapf Introduced ALDE

  desert madwort · Brassicaceae 2 counties
• 
  Alyssum desertorum Stapf var. desertorum Introduced ALDED

  desert madwort · Brassicaceae 1 county
• 
  Alyssum desertorum Stapf var. himalayensis Dudley Introduced ALDEH

  desert madwort · Brassicaceae 1 county
• 
  Alyssum simplex Rudolphi Introduced ALSI8

  alyssum · Brassicaceae 3 counties
• 
  Alyssum strigosum Banks & Sol. Introduced ALST2

  alyssum · Brassicaceae 10 counties
• 
  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae 41 counties
• 
  Amaranthus arenicola I.M. Johnst. Native AMAR

  sandhill amaranth · Amaranthaceae 2 counties
• 
  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae 39 counties
• 
  Amaranthus blitum L. Introduced AMBL2

  purple amaranth · Amaranthaceae 2 counties
• 
  Amaranthus blitum L. var. emarginatus (Salzm. ex Uline & W.L. Bray) Lambinon Introduced AMBLE2

  purple amaranth · Amaranthaceae 2 counties
• 
  Amaranthus californicus (Moq.) S. Watson Native AMCA

  California amaranth · Amaranthaceae 30 counties
• 
  Amaranthus caudatus L. Introduced AMCA3

  foxtail amaranth · Amaranthaceae 1 county
• 
  Amaranthus cruentus L. Introduced AMCR4

  red amaranth · Amaranthaceae 1 county