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 151–200 of 1,412 (introduced).

• 
  Atriplex undulata (Moq.) D. Dietr. Introduced ATUN3

  wavy-leaved saltbush · Chenopodiaceae 1 county
• 
  Atropa bella-donna L. Introduced ATBE

  belladonna · Solanaceae 2 counties
• 
  Aubrieta deltoidea (L.) DC. Introduced AUDE

  lilacbush · Brassicaceae 1 county
• 
  Avena barbata Pott ex Link Introduced AVBA

  slender oat · Poaceae 46 counties
• 
  Avena fatua L. Introduced AVFA

  wild oat · Poaceae 47 counties
• ⚘
  Avena occidentalis Durieu Introduced AVOC

  western oat · Poaceae 2 counties
• 
  Avena sativa L. Introduced AVSA

  common oat · Poaceae 24 counties
• 
  Avena sterilis L. Introduced AVST

  animated oat · Poaceae 2 counties
• 
  Avena strigosa Schreb. Introduced AVST2

  black oats · Poaceae 2 counties
• 
  Avicennia marina (Forssk.) Vierh. Introduced AVMA3

  gray mangrove · Verbenaceae 1 county
• 
  Avicennia marina (Forssk.) Vierh. var. resinifera (G. Forst.) Bakh. Introduced AVMAR

  gray mangrove · Verbenaceae 1 county
• 
  Barbarea verna (Mill.) Asch. Introduced BAVE

  early yellowrocket · Brassicaceae 13 counties
• 
  Barbarea vulgaris W.T. Aiton Introduced BAVU

  garden yellowrocket · Brassicaceae 9 counties
• 
  Bassia hyssopifolia (Pall.) Kuntz Introduced BAHY

  fivehorn smotherweed · Chenopodiaceae 30 counties
• 
  Bassia scoparia (L.) A.J. Scott Introduced BASC5

  burningbush · Chenopodiaceae 15 counties
• 
  Bellardia trixago (L.) All. Introduced BETR

  Mediterranean lineseed · Scrophulariaceae 11 counties
• 
  Bellis perennis L. Introduced BEPE2

  lawndaisy · Asteraceae 15 counties
• 
  Berberis darwinii Hook. Introduced BEDA

  Darwin's berberis · Berberidaceae 1 county
• 
  Beta vulgaris L. Introduced BEVU2

  common beet · Chenopodiaceae 22 counties
• 
  Bidens pilosa L. Introduced BIPI

  hairy beggarticks · Asteraceae 11 counties
• 
  Bituminaria bituminosa (L.) Stirt. Introduced BIBI4

  Arabian pea · Fabaceae 1 county
• 
  Boehmeria nivea (L.) Gaudich. Introduced BONI2

  Chinese grass · Urticaceae 30 counties
• 
  Bolboschoenus glaucus (Lam.) S.G. Sm. Introduced BOGL9

  tuberous bulrush · Cyperaceae 5 counties
• 
  Borago officinalis L. Introduced BOOF

  common borage · Boraginaceae 12 counties
• 
  Bothriochloa ischaemum (L.) Keng Introduced BOIS

  yellow bluestem · Poaceae 1 county
• 
  Bothriochloa ischaemum (L.) Keng var. songarica (Rupr. ex Fisch. & C.A. Mey.) Celarier & Harlan Introduced BOISS

  yellow bluestem · Poaceae 1 county
• 
  Brachypodium distachyon (L.) P. Beauv. Introduced BRDI2

  purple false brome · Poaceae 23 counties
• 
  Brachypodium phoenicoides (L.) Roem. & Schult. Introduced BRPH3

  thinleaf false brome · Poaceae 1 county
• 
  Brachypodium pinnatum (L.) P. Beauv. Introduced BRPI

  heath false brome · Poaceae 2 counties
• 
  Brassica fruticulosa Cyr. Introduced BRFR3

  Mediterranean cabbage · Brassicaceae 5 counties
• 
  Brassica juncea (L.) Czern. Introduced BRJU

  brown mustard · Brassicaceae 3 counties
• 
  Brassica napus L. Introduced BRNA

  rape · Brassicaceae 1 county
• 
  Brassica nigra (L.) W.D.J. Koch Introduced BRNI

  black mustard · Brassicaceae 32 counties
• 
  Brassica oleracea L. Introduced BROL

  cabbage · Brassicaceae 1 county
• 
  Brassica rapa L. Introduced BRRA

  field mustard · Brassicaceae 28 counties
• 
  Brassica rapa L. var. rapa Introduced BRRAR

  field mustard · Brassicaceae 28 counties
• 
  Brassica tournefortii Gouan Introduced BRTO

  Asian mustard · Brassicaceae 6 counties
• 
  Briza maxima L. Introduced BRMA

  big quakinggrass · Poaceae 16 counties
• 
  Briza media L. Introduced BRME

  perennial quakinggrass · Poaceae 2 counties
• 
  Briza minor L. Introduced BRMI2

  little quakinggrass · Poaceae 41 counties
• ⚘
  Bromidium tandilense (Kuntze) Rúgolo Introduced BRTA

  Kennedy's Tropical Bent · Poaceae 2 counties
• 
  Bromus alopecuros Poir. Introduced BRAL2

  weedy brome · Poaceae 1 county
• 
  Bromus arenarius Labill. Introduced BRAR3

  Australian brome · Poaceae 21 counties
• 
  Bromus arvensis L. Introduced BRAR5

  field brome · Poaceae 31 counties
• 
  Bromus berteroanus Colla Introduced BRBE6

  Chilean chess · Poaceae 20 counties
• 
  Bromus briziformis Fisch. & C.A. Mey. Introduced BRBR5

  rattlesnake brome · Poaceae 6 counties
• 
  Bromus catharticus Vahl Introduced BRCA6

  rescuegrass · Poaceae 27 counties
• 
  Bromus diandrus Roth Introduced BRDI3

  ripgut brome · Poaceae 51 counties
• 
  Bromus diandrus Roth ssp. diandrus Introduced BRDID2

  ripgut brome · Poaceae 1 county
• 
  Bromus diandrus Roth ssp. rigidus (Roth) Lainz Introduced BRDIR

  ripgut brome · Poaceae 5 counties