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 851–900 of 9,954.

• 
  Artemisia tridentata Nutt. ssp. spiciformis (Osterh.) Kartesz & Gandhi Native ARTRS2

  big sagebrush · Asteraceae 5 counties
• 
  Artemisia tridentata Nutt. ssp. tridentata Native ARTRT

  basin big sagebrush · Asteraceae 26 counties
• 
  Artemisia tridentata Nutt. ssp. vaseyana (Rydb.) Beetle Native ARTRV

  mountain big sagebrush · Asteraceae 20 counties
• 
  Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young Native ARTRW8

  Wyoming big sagebrush · Asteraceae 3 counties
• 
  Arthrocnemum subterminale (Parish) Standl. Native ARSU11

  Parish's glasswort · Chenopodiaceae 18 counties
• 
  Arum italicum Mill. Introduced ARIT

  Italian lords and ladies · Araceae 5 counties
• 
  Arum palestinum Boiss. Introduced ARPA39

  Solomon's lily · Araceae 1 county
• 
  Aruncus dioicus (Walter) Fernald Both ARDI8

  bride's feathers · Rosaceae 6 counties
• 
  Aruncus dioicus (Walter) Fernald var. acuminatus (Rydb.) Rydb. ex H. Hara Native ARDIA

  bride's feathers · Rosaceae 6 counties
• 
  Arundo donax L. Introduced ARDO4

  giant reed · Poaceae 25 counties
• 
  Asarum caudatum Lindl. Native ASCA2

  British Columbia wildginger · Aristolochiaceae 12 counties
• 
  Asarum hartwegii S. Watson Native ASHA

  Hartweg's wildginger · Aristolochiaceae 9 counties
• 
  Asarum lemmonii S. Watson Native ASLE

  Lemmon's wildginger · Aristolochiaceae 6 counties
• 
  Asarum marmoratum Piper Native ASMA8

  marbled wildginger · Aristolochiaceae 2 counties
• 
  Asclepias albicans S. Watson Native ASAL

  whitestem milkweed · Asclepiadaceae 4 counties
• 
  Asclepias asperula (Decne.) Woodson Native ASAS

  spider milkweed · Asclepiadaceae 1 county
• 
  Asclepias asperula (Decne.) Woodson ssp. asperula Native ASASA

  spider milkweed · Asclepiadaceae 1 county
• 
  Asclepias californica Greene Native ASCA3

  California milkweed · Asclepiadaceae 25 counties
• 
  Asclepias californica Greene ssp. californica Native ASCAC3

  California milkweed · Asclepiadaceae 11 counties
• 
  Asclepias californica Greene ssp. greenei Woodson Native ASCAG

  Greene's milkweed · Asclepiadaceae 13 counties
• 
  Asclepias cordifolia (Benth.) Jeps. Native ASCO

  heartleaf milkweed · Asclepiadaceae 32 counties
• 
  Asclepias cryptoceras S. Watson Native ASCR

  pallid milkweed · Asclepiadaceae 1 county
• 
  Asclepias cryptoceras S. Watson ssp. cryptoceras Native ASCRC2

  pallid milkweed · Asclepiadaceae 1 county
• 
  Asclepias cryptoceras S. Watson ssp. davisii (Woodson) Woodson Native ASCRD2

  Davis' milkweed · Asclepiadaceae 1 county
• 
  Asclepias curassavica L. Introduced ASCU

  bloodflower · Asclepiadaceae 4 counties
• 
  Asclepias eriocarpa Benth. Native ASER

  woollypod milkweed · Asclepiadaceae 26 counties
• 
  Asclepias erosa Torr. Native ASER2

  desert milkweed · Asclepiadaceae 11 counties
• 
  Asclepias fascicularis Decne. Native ASFA

  Mexican whorled milkweed · Asclepiadaceae 49 counties
• 
  Asclepias fruticosa L. Introduced ASFR13

  African milkweed · Asclepiadaceae 1 county
• 
  Asclepias latifolia (Torr.) Raf. Native ASLA4

  broadleaf milkweed · Asclepiadaceae 2 counties
• 
  Asclepias linaria Cav. Native ASLI6

  pineneedle milkweed · Asclepiadaceae 1 county
• 
  Asclepias nyctaginifolia A. Gray Native ASNY

  Mojave milkweed · Asclepiadaceae 1 county
• 
  Asclepias solanoana Woodson Native ASSO

  serpentine milkweed · Asclepiadaceae 10 counties
• 
  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae 28 counties
• 
  Asclepias subulata Decne. Native ASSU

  rush milkweed · Asclepiadaceae 4 counties
• 
  Asclepias vestita Hook. & Arn. Native ASVE2

  woolly milkweed · Asclepiadaceae 27 counties
• 
  Asclepias vestita Hook. & Arn. ssp. parishii (Jeps.) Woodson Native ASVEP

  Parish's woolly milkweed · Asclepiadaceae 21 counties
• 
  Asclepias vestita Hook. & Arn. ssp. vestita Native ASVEV

  woolly milkweed · Asclepiadaceae 23 counties
• 
  Asparagus asparagoides (L.) Druce Introduced ASAS4

  African asparagus fern · Liliaceae 6 counties
• 
  Asparagus officinalis L. Introduced ASOF

  garden asparagus · Liliaceae 21 counties
• 
  Asparagus setaceus (Kunth) Jessop Introduced ASSE12

  common asparagus fern · Liliaceae 1 county
• 
  Asperugo procumbens L. Introduced ASPR

  German-madwort · Boraginaceae 2 counties
• 
  Asphodelus fistulosus L. Introduced ASFI2

  onionweed · Liliaceae 6 counties
• 
  Aspidotis californica (Hook.) Nutt. ex Copeland Native ASCA5

  California lacefern · Pteridaceae 36 counties
• 
  Aspidotis carlotta-halliae (W.H. Wagner & E.F. Gilbert) Lellinger, (pro. hybr.) Native ASCA17

  tufted lacefern · Pteridaceae 5 counties
• 
  Aspidotis densa (Brack.) Lellinger Native ASDE6

  Indian's dream · Pteridaceae 32 counties
• 
  Asplenium septentrionale (L.) Hoffm. Native ASSE

  forked spleenwort · Aspleniaceae 3 counties
• 
  Asplenium trichomanes L. Native ASTR2

  maidenhair spleenwort · Aspleniaceae 1 county
• 
  Asplenium trichomanes L. ssp. trichomanes Native ASTRT

  maidenhair spleenwort · Aspleniaceae 1 county
• 
  Asplenium trichomanes-ramosum L. Native ASTR10

  brightgreen spleenwort · Aspleniaceae 1 county