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 601–650 of 8,499 (native).

• ⚘
  Arctostaphylos ×helleri Eastw. (pro sp.) [myrtifolia × viscida] Native ARHE4

  manzanita · Ericaceae 2 counties
• ⚘
  Arctostaphylos ×media Greene (pro sp.) [columbiana × uva-ursi] Native ARME7

  manzanita · Ericaceae 2 counties
• ⚘
  Arctostaphylos ×parvifolia Howell (pro sp.) [glandulosa × nevadensis] Native ARPA5

  small-leaf manzanita · Ericaceae 2 counties
• 
  Arenaria aculeata S. Watson Native ARAC2

  prickly sandwort · Caryophyllaceae 12 counties
• 
  Arenaria capillaris Poir. Native ARCA7

  slender mountain sandwort · Caryophyllaceae 4 counties
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  Arenaria capillaris Poir. ssp. americana Maguire Native ARCAA

  fescue sandwort · Caryophyllaceae 4 counties
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  Arenaria congesta Nutt. Native ARCO5

  ballhead sandwort · Caryophyllaceae 24 counties
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  Arenaria congesta Nutt. var. charlestonensis Maguire Native ARCOC2

  Charleston sandwort · Caryophyllaceae 1 county
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  Arenaria congesta Nutt. var. congesta Native ARCOC4

  ballhead sandwort · Caryophyllaceae 12 counties
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  Arenaria congesta Nutt. var. crassula Maguire Native ARCOC3

  ballhead sandwort · Caryophyllaceae 8 counties
• 
  Arenaria congesta Nutt. var. prolifera Maguire Native ARCOP

  ballhead sandwort · Caryophyllaceae 1 county
• 
  Arenaria congesta Nutt. var. simulans Maguire Native ARCOS

  ballhead sandwort · Caryophyllaceae 1 county
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  Arenaria congesta Nutt. var. subcongesta (S. Watson) S. Watson Native ARCOS2

  loosehead sandwort · Caryophyllaceae 10 counties
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  Arenaria congesta Nutt. var. suffrutescens (A. Gray) B.L. Rob. Native ARCOS3

  suffrutescent sandwort · Caryophyllaceae 15 counties
• 
  Arenaria franklinii Douglas ex Hook. Native ARFR

  Franklin's sandwort · Caryophyllaceae 1 county
• 
  Arenaria kingii (S. Watson) M.E. Jones Native ARKI

  King's sandwort · Caryophyllaceae 19 counties
• 
  Arenaria kingii (S. Watson) M.E. Jones ssp. compacta (Coville) Maguire Native ARKIC

  King's compact sandwort · Caryophyllaceae 19 counties
• 
  Arenaria lanuginosa (Michx.) Rohrb. Native ARLA4

  spreading sandwort · Caryophyllaceae 1 county
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  Arenaria lanuginosa (Michx.) Rohrb. ssp. saxosa (A. Gray) Maguire Native ARLAS

  spreading sandwort · Caryophyllaceae 1 county
• 
  Arenaria macradenia S. Watson Native ARMA3

  Mojave sandwort · Caryophyllaceae 7 counties
• 
  Arenaria macradenia S. Watson ssp. ferrisiae Abrams Native ARMAF

  Ferris' sandwort · Caryophyllaceae 4 counties
• 
  Arenaria macradenia S. Watson ssp. macradenia Native ARMAM

  Mojave sandwort · Caryophyllaceae 6 counties
• 
  Arenaria macradenia S. Watson ssp. macradenia var. arcuifolia Maguire Native ARMAA2

  Mojave sandwort · Caryophyllaceae 3 counties
• 
  Arenaria macradenia S. Watson ssp. macradenia var. kuschei (Eastw.) Maguire Native ARMAK2

  Forest Camp sandwort · Caryophyllaceae 1 county
• 
  Arenaria macradenia S. Watson ssp. macradenia var. macradenia Native ARMAM4

  Mojave sandwort · Caryophyllaceae 6 counties
• 
  Arenaria paludicola B.L. Rob. Native ARPA7

  marsh sandwort · Caryophyllaceae 5 counties
• 
  Arenaria ursina B.L. Rob. Native ARUR

  Bear Valley sandwort · Caryophyllaceae 1 county
• 
  Argemone corymbosa Greene Native ARCO6

  Mojave pricklypoppy · Papaveraceae 1 county
• 
  Argemone corymbosa Greene ssp. corymbosa Native ARCOC6

  Mojave pricklypoppy · Papaveraceae 1 county
• 
  Argemone munita Durand & Hilg. Native ARMU

  flatbud pricklypoppy · Papaveraceae 30 counties
• 
  Argemone munita Durand & Hilg. ssp. argentea G.B. Ownbey Native ARMUA

  flatbud pricklypoppy · Papaveraceae 13 counties
• 
  Argemone munita Durand & Hilg. ssp. munita Native ARMUM

  flatbud pricklypoppy · Papaveraceae 2 counties
• 
  Argemone munita Durand & Hilg. ssp. robusta G.B. Ownbey Native ARMUR2

  flatbud pricklypoppy · Papaveraceae 1 county
• 
  Argemone munita Durand & Hilg. ssp. rotundata (Rydb.) G.B. Ownbey Native ARMUR

  flatbud pricklypoppy · Papaveraceae 16 counties
• 
  Argentina anserina (L.) Rydb. Native ARAN7

  silverweed cinquefoil · Rosaceae 24 counties
• ⚘
  Argentina egedii (Wormsk.) Rydb. Native AREG

  Pacific silverweed · Rosaceae 17 counties
• ⚘
  Argentina egedii (Wormsk.) Rydb. ssp. egedii Native AREGE

  Pacific silverweed · Rosaceae 17 counties
• 
  Argyrochosma jonesii (Maxon) Windham Native ARJO2

  Jones' false cloak fern · Pteridaceae 6 counties
• 
  Argyrochosma limitanea (Maxon) Windham Native ARLI4

  southwestern false cloak fern · Pteridaceae 1 county
• 
  Argyrochosma limitanea (Maxon) Windham ssp. limitanea Native ARLIL

  southwestern false cloak fern · Pteridaceae 1 county
• 
  Argythamnia californica Brandegee Native ARCA19

  California silverbush · Euphorbiaceae 2 counties
• 
  Argythamnia claryana Jeps. Native ARCL2

  desert silverbush · Euphorbiaceae 3 counties
• 
  Argythamnia lanceolata (Benth.) Müll. Arg. Native ARLA12

  narrowleaf silverbush · Euphorbiaceae 4 counties
• 
  Argythamnia neomexicana Müll. Arg. Native ARNE2

  New Mexico silverbush · Euphorbiaceae 2 counties
• 
  Argythamnia serrata (Torr.) Müll. Arg. Native ARSE7

  Yuma silverbush · Euphorbiaceae 4 counties
• 
  Aristida adscensionis L. Native ARAD

  sixweeks threeawn · Poaceae 9 counties
• 
  Aristida californica Thurb. ex S. Watson Native ARCA9

  California threeawn · Poaceae 4 counties
• 
  Aristida californica Thurb. ex S. Watson var. californica Native ARCAC8

  California threeawn · Poaceae 4 counties
• 
  Aristida dichotoma Michx. Native ARDI4

  churchmouse threeawn · Poaceae 1 county
• 
  Aristida dichotoma Michx. var. dichotoma Native ARDID

  churchmouse threeawn · Poaceae 1 county