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 501–550 of 9,954.

• 
  Anulocaulis annulatus (Coville) Standl. Native ANAN4

  valley ringstem · Nyctaginaceae 2 counties
• 
  Apera interrupta (L.) P. Beauv. Introduced APIN

  dense silkybent · Poaceae 5 counties
• 
  Apera spica-venti (L.) P. Beauv. Introduced APSP

  loose silkybent · Poaceae 3 counties
• 
  Aphanes arvensis L. Introduced APAR2

  field parsley piert · Rosaceae 38 counties
• 
  Aphanisma blitoides Nutt. ex Moq. Native APBL

  San Diego coastalcreeper · Chenopodiaceae 5 counties
• 
  Apiastrum angustifolium Nutt. Native APAN

  mock parsley · Apiaceae 32 counties
• 
  Apium graveolens L. Introduced APGR2

  wild celery · Apiaceae 23 counties
• 
  Apium graveolens L. var. dulce (Mill.) DC. Introduced APGRD

  wild celery · Apiaceae 23 counties
• 
  Apocynum androsaemifolium L. Native APAN2

  spreading dogbane · Apocynaceae 43 counties
• 
  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae 44 counties
• ⚘
  Apocynum ×floribundum Greene (pro sp.) [androsaemifolium × cannabinum] Native APFL

  Apocynaceae 5 counties
• 
  Aponogeton distachyos L. f. Introduced APDI

  Cape pondweed · Aponogetonaceae 2 counties
• 
  Aptenia cordifolia (L. f.) Schwant. Introduced APCO

  heartleaf iceplant · Aizoaceae 4 counties
• 
  Aquilegia eximia Van Houtte ex Planch. Native AQEX

  Van Houtte's columbine · Ranunculaceae 16 counties
• 
  Aquilegia formosa Fisch. ex DC. Native AQFO

  western columbine · Ranunculaceae 47 counties
• 
  Aquilegia pubescens Coville Native AQPU

  Sierra columbine · Ranunculaceae 6 counties
• 
  Arabidopsis thaliana (L.) Heynh. Introduced ARTH

  mouseear cress · Brassicaceae 15 counties
• 
  Arabis aculeolata Greene Native ARAC4

  Waldo rockcress · Brassicaceae 2 counties
• 
  Arabis blepharophylla Hook. & Arn. Native ARBL

  rose rockcress · Brassicaceae 7 counties
• 
  Arabis bodiensis Rollins Native ARBO

  Bodie Hills rockcress · Brassicaceae 4 counties
• 
  Arabis breweri S. Watson Native ARBR

  Brewer's rockcress · Brassicaceae 25 counties
• 
  Arabis breweri S. Watson var. austiniae (Greene) Rollins Native ARBRA

  Brewer's rockcress · Brassicaceae 4 counties
• 
  Arabis breweri S. Watson var. breweri Native ARBRB

  Brewer's rockcress · Brassicaceae 24 counties
• 
  Arabis breweri S. Watson var. pecuniaria Rollins Native ARBRP

  Brewer's rockcress · Brassicaceae 1 county
• 
  Arabis cobrensis M.E. Jones Native ARCO

  sagebrush rockcress · Brassicaceae 4 counties
• 
  Arabis constancei Rollins Native ARCO12

  Constance's rockcress · Brassicaceae 2 counties
• 
  Arabis davidsonii Greene Native ARDA

  Davidson's rockcress · Brassicaceae 9 counties
• 
  Arabis davidsonii Greene var. davidsonii Native ARDAD

  Davidson's rockcress · Brassicaceae 1 county
• 
  Arabis davidsonii Greene var. parva Rollins Native ARDAP

  Davidson's rockcress · Brassicaceae 1 county
• 
  Arabis dispar M.E. Jones Native ARDI

  pinyon rockcress · Brassicaceae 4 counties
• 
  Arabis drummondii A. Gray Native ARDR

  Drummond's rockcress · Brassicaceae 13 counties
• 
  Arabis fernaldiana Rollins Native ARFE2

  park rockcress · Brassicaceae 1 county
• 
  Arabis fernaldiana Rollins var. stylosa (S. Watson) Rollins Native ARFES2

  park rockcress · Brassicaceae 1 county
• 
  Arabis glabra (L.) Bernh. Native ARGL

  tower rockcress · Brassicaceae 44 counties
• 
  Arabis glaucovalvula M.E. Jones Native ARGL2

  bluepod rockcress · Brassicaceae 4 counties
• 
  Arabis hirshbergiae S. Boyd Native ARHI9

  Cuyamaca rockcress · Brassicaceae 1 county
• 
  Arabis hirsuta (L.) Scop. Native ARHI

  hairy rockcress · Brassicaceae 14 counties
• 
  Arabis hirsuta (L.) Scop. var. glabrata Torr. & A. Gray Native ARHIG

  mountain rockcress · Brassicaceae 6 counties
• 
  Arabis hirsuta (L.) Scop. var. pycnocarpa (M. Hopkins) Rollins Native ARHIP

  creamflower rockcress · Brassicaceae 4 counties
• 
  Arabis hoffmannii (Munz) Rollins Native ARHO

  Hoffmann's rockcress · Brassicaceae 2 counties
• 
  Arabis holboellii Hornem. Native ARHO2

  Holboell's rockcress · Brassicaceae 28 counties
• 
  Arabis holboellii Hornem. var. pendulocarpa (A. Nelson) Rollins Native ARHOP2

  dropseed rockcress · Brassicaceae 6 counties
• 
  Arabis holboellii Hornem. var. pinetorum (Tidestr.) Rollins Native ARHOP3

  Holboell's rockcress · Brassicaceae 18 counties
• 
  Arabis holboellii Hornem. var. retrofracta (Graham) Rydb. Native ARHOR

  second rockcress · Brassicaceae 23 counties
• 
  Arabis inyoensis Rollins Native ARIN

  Inyo rockcress · Brassicaceae 6 counties
• 
  Arabis johnstonii Munz Native ARJO

  Johnston's rockcress · Brassicaceae 1 county
• 
  Arabis koehleri Howell Native ARKO

  Koehler's rockcress · Brassicaceae 2 counties
• 
  Arabis koehleri Howell var. stipitata Rollins Native ARKOS

  Koehler's rockcress · Brassicaceae 2 counties
• 
  Arabis lemmonii S. Watson Native ARLE

  Lemmon's rockcress · Brassicaceae 14 counties
• 
  Arabis lemmonii S. Watson var. depauperata (A. Nelson & Kennedy) Rollins Native ARLED

  soldier rockcress · Brassicaceae 10 counties