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 1,412 (introduced).

• 
  Bromus hordeaceus L. Introduced BRHO2

  soft brome · Poaceae 52 counties
• 
  Bromus hordeaceus L. ssp. divaricatus (Bonnier & Layens) Kerguélen Introduced BRHOD

  soft brome · Poaceae 3 counties
• 
  Bromus hordeaceus L. ssp. hordeaceus Introduced BRHOH

  soft brome · Poaceae 32 counties
• 
  Bromus inermis Leyss. ssp. inermis Introduced BRINI

  smooth brome · Poaceae 16 counties
• 
  Bromus inermis Leyss. ssp. inermis var. inermis Introduced BRINI2

  smooth brome · Poaceae 16 counties
• 
  Bromus madritensis L. Introduced BRMA3

  compact brome · Poaceae 53 counties
• 
  Bromus racemosus L. Introduced BRRA2

  bald brome · Poaceae 5 counties
• 
  Bromus rubens L. Introduced BRRU2

  red brome · Poaceae 53 counties
• 
  Bromus scoparius L. Introduced BRSC3

  broom brome · Poaceae 2 counties
• 
  Bromus secalinus L. Introduced BRSE

  rye brome · Poaceae 14 counties
• 
  Bromus stamineus Desv. Introduced BRST3

  roadside brome · Poaceae 13 counties
• 
  Bromus sterilis L. Introduced BRST2

  poverty brome · Poaceae 23 counties
• 
  Bromus tectorum L. Introduced BRTE

  cheatgrass · Poaceae 46 counties
• 
  Bryonia cretica L. Introduced BRCR2

  Cretan bryony · Cucurbitaceae 1 county
• ⚘
  Bryonia dioica Jacq. Introduced BRDI5

  Cretan bryony · Cucurbitaceae 1 county
• 
  Buddleja davidii Franch. Introduced BUDA2

  orange eye butterflybush · Buddlejaceae 6 counties
• 
  Buddleja saligna Willd. Introduced BUSA

  squarestem butterflybush · Buddlejaceae 1 county
• 
  Buglossoides arvensis (L.) I.M. Johnst. Introduced BUAR3

  corn gromwell · Boraginaceae 3 counties
• 
  Bulbostylis barbata (Rottb.) C.B. Clarke Introduced BUBA

  watergrass · Cyperaceae 1 county
• 
  Bupleurum lancifolium Hornem. Introduced BULA3

  lanceleaf thorow wax · Apiaceae 4 counties
• 
  Caesalpinia gilliesii (Wall. ex Hook.) Wall. ex D. Dietr. Introduced CAGI

  bird-of-paradise shrub · Fabaceae 3 counties
• 
  Caesalpinia spinosa (Molina) Kuntze Introduced CASP11

  spiny holdback · Fabaceae 1 county
• 
  Cakile maritima Scop. Introduced CAMA

  European searocket · Brassicaceae 17 counties
• 
  Calamintha sylvatica Bromf. Introduced CASY6

  woodland calamint · Lamiaceae 1 county
• 
  Calamintha sylvatica Bromf. ssp. ascendens (Jord.) P.W. Ball Introduced CASYA

  woodland calamint · Lamiaceae 1 county
• 
  Calendula arvensis L. Introduced CAAR

  field marigold · Asteraceae 7 counties
• 
  Calendula officinalis L. Introduced CAOF

  pot marigold · Asteraceae 8 counties
• 
  Calibrachoa parviflora (Juss.) D'Arcy Introduced CAPA47

  seaside petunia · Solanaceae 17 counties
• 
  Callitriche stagnalis Scop. Introduced CAST

  pond water-starwort · Callitrichaceae 2 counties
• 
  Calotropis procera (Aiton) W.T. Aiton Introduced CAPR

  roostertree · Asclepiadaceae 1 county
• 
  Calystegia silvatica (Kit.) Griseb. ssp. disjuncta Brummitt Introduced CASID

  shortstalk false bindweed · Convolvulaceae 3 counties
• 
  Camelina microcarpa Andrz. ex DC. Introduced CAMI2

  littlepod false flax · Brassicaceae 14 counties
• 
  Campanula medium L. Introduced CAME20

  Canterbury bells · Campanulaceae 1 county
• 
  Cannabis sativa L. Introduced CASA3

  marijuana · Cannabaceae 11 counties
• 
  Cannabis sativa L. ssp. sativa Introduced CASAS3

  marijuana · Cannabaceae 11 counties
• 
  Cannabis sativa L. ssp. sativa var. sativa Introduced CASAS9

  marijuana · Cannabaceae 11 counties
• 
  Capsella bursa-pastoris (L.) Medik. Introduced CABU2

  shepherd's purse · Brassicaceae 51 counties
• 
  Capsicum annuum L. var. annuum Introduced CAANA4

  cayenne pepper · Solanaceae 1 county
• 
  Caragana arborescens Lam. Introduced CAAR18

  Siberian peashrub · Fabaceae 1 county
• 
  Cardamine flexuosa With. Introduced CAFL14

  woodland bittercress · Brassicaceae 2 counties
• 
  Cardamine hirsuta L. Introduced CAHI3

  hairy bittercress · Brassicaceae 2 counties
• 
  Cardaria chalepensis (L.) Hand.-Maz. Introduced CACH42

  lenspod whitetop · Brassicaceae 42 counties
• 
  Cardaria draba (L.) Desv. Introduced CADR

  whitetop · Brassicaceae 46 counties
• 
  Cardaria pubescens (C.A. Mey.) Jarmolenko Introduced CAPU6

  hairy whitetop · Brassicaceae 41 counties
• 
  Carduus acanthoides L. Introduced CAAC

  spiny plumeless thistle · Asteraceae 10 counties
• 
  Carduus nutans L. Introduced CANU4

  nodding plumeless thistle · Asteraceae 14 counties
• 
  Carduus pycnocephalus L. Introduced CAPY2

  Italian plumeless thistle · Asteraceae 48 counties
• 
  Carduus tenuiflorus W. Curtis Introduced CATE2

  winged plumeless thistle · Asteraceae 32 counties
• 
  Carex pendula Huds. Introduced CAPE45

  hanging sedge · Cyperaceae 1 county
• 
  Carpobrotus chilensis (Molina) N.E. Br. Introduced CACH38

  sea fig · Aizoaceae 14 counties