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 1,051–1,100 of 8,499 (native).

• 
  Betula pumila L. Native BEPU4

  bog birch · Betulaceae 6 counties
• 
  Betula pumila L. var. glandulifera Regel Native BEPUG

  bog birch · Betulaceae 6 counties
• 
  Bidens cernua L. Native BICE

  nodding beggartick · Asteraceae 14 counties
• 
  Bidens frondosa L. Native BIFR

  devil's beggartick · Asteraceae 29 counties
• 
  Bidens laevis (L.) Britton, Sterns & Poggenb. Native BILA

  smooth beggartick · Asteraceae 24 counties
• 
  Bidens tripartita L. Native BITR

  threelobe beggarticks · Asteraceae 2 counties
• 
  Bidens vulgata Greene Native BIVU

  big devils beggartick · Asteraceae 2 counties
• 
  Blechnum spicant (L.) Sm. Native BLSP

  deer fern · Blechnaceae 8 counties
• 
  Blennosperma bakeri Heiser Native BLBA

  Baker's stickyseed · Asteraceae 1 county
• 
  Blennosperma nanum (Hook.) S.F. Blake Native BLNA

  common stickyseed · Asteraceae 36 counties
• 
  Blennosperma nanum (Hook.) S.F. Blake var. nanum Native BLNAN

  common stickyseed · Asteraceae 36 counties
• 
  Blennosperma nanum (Hook.) S.F. Blake var. robustum J.T. Howell Native BLNAR

  common stickyseed · Asteraceae 2 counties
• 
  Blepharidachne kingii (S. Watson) Hack. Native BLKI

  King's eyelashgrass · Poaceae 2 counties
• 
  Blepharipappus scaber Hook. Native BLSC

  rough eyelashweed · Asteraceae 8 counties
• 
  Blepharipappus scaber Hook. ssp. laevis (A. Gray) D.D. Keck Native BLSCL

  rough eyelashweed · Asteraceae 1 county
• 
  Blepharipappus scaber Hook. ssp. scaber Native BLSCS

  rough eyelashweed · Asteraceae 8 counties
• 
  Blepharizonia laxa Greene Native BLLA4

  blepharizonia · Asteraceae 11 counties
• 
  Blepharizonia plumosa (Kellogg) Greene Native BLPL

  big tarweed · Asteraceae 13 counties
• 
  Blepharizonia plumosa (Kellogg) Greene ssp. plumosa Native BLPLP

  big tarweed · Asteraceae 5 counties
• 
  Blepharizonia plumosa (Kellogg) Greene ssp. viscida D.D. Keck Native BLPLV

  big tarweed · Asteraceae 12 counties
• 
  Bloomeria crocea (Torr.) Coville Native BLCR

  common goldenstar · Liliaceae 13 counties
• 
  Bloomeria crocea (Torr.) Coville var. aurea (Kellogg) J.W. Ingram Native BLCRA

  common goldenstar · Liliaceae 3 counties
• 
  Bloomeria crocea (Torr.) Coville var. crocea Native BLCRC

  common goldenstar · Liliaceae 9 counties
• 
  Bloomeria crocea (Torr.) Coville var. montana (Greene) J.W. Ingram Native BLCRM

  common goldenstar · Liliaceae 3 counties
• 
  Bloomeria humilis Hoover Native BLHU

  dwarf goldenstar · Liliaceae 2 counties
• 
  Boehmeria cylindrica (L.) Sw. Native BOCY

  smallspike false nettle · Urticaceae 3 counties
• 
  Boerhavia coccinea Mill. Native BOCO

  scarlet spiderling · Nyctaginaceae 4 counties
• 
  Boerhavia coulteri (Hook. f.) S. Watson Native BOCO2

  Coulter's spiderling · Nyctaginaceae 3 counties
• 
  Boerhavia diffusa L. Native BODI3

  red spiderling · Nyctaginaceae 1 county
• ⚘
  Boerhavia intermedia M.E. Jones Native BOIN

  fivewing spiderling · Nyctaginaceae 3 counties
• 
  Boerhavia triquetra S. Watson Native BOTR

  slender spiderling · Nyctaginaceae 4 counties
• 
  Boerhavia wrightii A. Gray Native BOWR

  largebract spiderling · Nyctaginaceae 5 counties
• 
  Bolandra californica A. Gray Native BOCA

  Sierra false coolwort · Saxifragaceae 7 counties
• 
  Bolboschoenus fluviatilis (Torr.) Soják Native BOFL3

  river bulrush · Cyperaceae 15 counties
• 
  Bolboschoenus maritimus (L.) Palla Native BOMA7

  cosmopolitan bulrush · Cyperaceae 39 counties
• 
  Bolboschoenus robustus (Pursh) Soják Native BORO5

  sturdy bulrush · Cyperaceae 21 counties
• 
  Boschniakia hookeri Walp. Native BOHO

  Vancouver groundcone · Orobanchaceae 4 counties
• 
  Boschniakia strobilacea A. Gray Native BOST2

  California groundcone · Orobanchaceae 25 counties
• 
  Bothriochloa barbinodis (Lag.) Herter Native BOBA3

  cane bluestem · Poaceae 6 counties
• 
  Bothriochloa laguroides (DC.) Herter ssp. torreyana (Steud.) Allred & Gould Native BOLAT

  silver beardgrass · Poaceae 2 counties
• 
  Botrychium ascendens W.H. Wagner Native BOAS2

  trianglelobe moonwort · Ophioglossaceae 4 counties
• 
  Botrychium crenulatum W.H. Wagner Native BOCR

  scalloped moonwort · Ophioglossaceae 12 counties
• 
  Botrychium lineare W.H. Wagner Native BOLI7

  narrowleaf grapefern · Ophioglossaceae 1 county
• 
  Botrychium lunaria (L.) Sw. Native BOLU

  common moonwort · Ophioglossaceae 4 counties
• 
  Botrychium minganense Victorin Native BOMI

  Mingan moonwort · Ophioglossaceae 5 counties
• 
  Botrychium montanum W.H. Wagner Native BOMO

  mountain moonwort · Ophioglossaceae 3 counties
• 
  Botrychium multifidum (S.G. Gmel.) Trevis. Native BOMU

  leathery grapefern · Ophioglossaceae 23 counties
• 
  Botrychium pinnatum H. St. John Native BOPI

  northern moonwort · Ophioglossaceae 1 county
• 
  Botrychium pumicola Coville ex Underw. Native BOPU2

  Crater Lake grapefern · Ophioglossaceae 1 county
• 
  Botrychium simplex E. Hitchc. Native BOSI

  little grapefern · Ophioglossaceae 17 counties