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 351–400 of 9,954.

• 
  Amaranthus deflexus L. Introduced AMDE

  largefruit amaranth · Amaranthaceae 24 counties
• 
  Amaranthus fimbriatus (Torr.) Benth. ex S. Watson Native AMFI

  fringed amaranth · Amaranthaceae 4 counties
• 
  Amaranthus hybridus L. Native AMHY

  slim amaranth · Amaranthaceae 9 counties
• 
  Amaranthus hypochondriacus L. Introduced AMHY2

  Prince-of-Wales feather · Amaranthaceae 2 counties
• 
  Amaranthus palmeri S. Watson Native AMPA

  carelessweed · Amaranthaceae 11 counties
• 
  Amaranthus powellii S. Watson Native AMPO2

  Powell's amaranth · Amaranthaceae 17 counties
• 
  Amaranthus retroflexus L. Native AMRE

  redroot amaranth · Amaranthaceae 35 counties
• 
  Amaranthus spinosus L. Native AMSP

  spiny amaranth · Amaranthaceae 1 county
• 
  Amaranthus torreyi (A. Gray) Benth. ex S. Watson Native AMTO6

  Torrey's amaranthus · Amaranthaceae 1 county
• 
  Amaranthus tuberculatus (Moq.) Sauer Native AMTU

  roughfruit amaranth · Amaranthaceae 4 counties
• 
  Amaranthus watsonii Standl. Native AMWA

  Watson's amaranth · Amaranthaceae 2 counties
• 
  Amaryllis belladonna L. Introduced AMBE3

  belladonna lily · Liliaceae 6 counties
• 
  Amblyopappus pusillus Hook. & Arn. Native AMPU3

  dwarf coastweed · Asteraceae 6 counties
• 
  Ambrosia acanthicarpa Hook. Native AMAC2

  flatspine bur ragweed · Asteraceae 22 counties
• 
  Ambrosia ambrosioides (Cav.) Payne Native AMAM2

  ambrosia leaf bur ragweed · Asteraceae 1 county
• 
  Ambrosia artemisiifolia L. Both AMAR2

  annual ragweed · Asteraceae 9 counties
• 
  Ambrosia artemisiifolia L. var. elatior (L.) Descourtils Introduced AMARE

  annual ragweed · Asteraceae 9 counties
• 
  Ambrosia chamissonis (Less.) Greene Native AMCH4

  silver bur ragweed · Asteraceae 17 counties
• 
  Ambrosia chenopodiifolia (Benth.) Payne Native AMCH5

  San Diego bur ragweed · Asteraceae 1 county
• 
  Ambrosia confertiflora DC. Native AMCO3

  weakleaf bur ragweed · Asteraceae 12 counties
• 
  Ambrosia dumosa (A. Gray) Payne Native AMDU2

  burrobush · Asteraceae 7 counties
• 
  Ambrosia eriocentra (A. Gray) Payne Native AMER

  woolly fruit bur ragweed · Asteraceae 3 counties
• 
  Ambrosia ilicifolia (A. Gray) Payne Native AMIL2

  hollyleaf bur ragweed · Asteraceae 3 counties
• 
  Ambrosia psilostachya DC. Native AMPS

  Cuman ragweed · Asteraceae 36 counties
• 
  Ambrosia pumila (Nutt.) A. Gray Native AMPU4

  dwarf bur ragweed · Asteraceae 2 counties
• 
  Ambrosia trifida L. Native AMTR

  great ragweed · Asteraceae 5 counties
• 
  Ambrosia trifida L. var. trifida Native AMTRT2

  great ragweed · Asteraceae 5 counties
• 
  Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Native AMAL2

  Saskatoon serviceberry · Rosaceae 39 counties
• 
  Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. var. alnifolia Native AMALA

  Saskatoon serviceberry · Rosaceae 1 county
• 
  Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. var. cusickii (Fernald) C.L. Hitchc. Native AMALC

  Cusick's serviceberry · Rosaceae 1 county
• 
  Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. var. semiintegrifolia (Hook.) C.L. Hitchc. Native AMALS

  Saskatoon serviceberry · Rosaceae 39 counties
• 
  Amelanchier pallida Greene Native AMPA2

  pale serviceberry · Rosaceae 33 counties
• ⚘
  Amelanchier pumila (Torr. & A. Gray) Nutt. ex M. Roem. Native AMPU5

  dwarf serviceberry · Rosaceae 15 counties
• 
  Amelanchier utahensis Koehne Native AMUT

  Utah serviceberry · Rosaceae 44 counties
• 
  Amelanchier utahensis Koehne var. covillei (Standl.) N.H. Holmgren Native AMUTC2

  Coville's serviceberry · Rosaceae 4 counties
• 
  Amelanchier utahensis Koehne var. utahensis Native AMUTU

  Utah serviceberry · Rosaceae 44 counties
• 
  Ammannia coccinea Rottb. Native AMCO

  valley redstem · Lythraceae 26 counties
• 
  Ammannia robusta Heer & Regel Native AMRO3

  grand redstem · Lythraceae 13 counties
• 
  Ammi majus L. Introduced AMMA

  large bullwort · Apiaceae 7 counties
• 
  Ammi visnaga (L.) Lam. Introduced AMVI2

  toothpickweed · Apiaceae 7 counties
• 
  Ammophila arenaria (L.) Link Introduced AMAR4

  European beachgrass · Poaceae 12 counties
• 
  Ammophila breviligulata Fernald Native AMBR

  American beachgrass · Poaceae 2 counties
• 
  Ammoselinum giganteum J.M. Coult. & Rose Native AMGI

  western sandparsley · Apiaceae 2 counties
• 
  Amorpha californica Nutt. Native AMCA5

  California false indigo · Fabaceae 22 counties
• 
  Amorpha californica Nutt. var. californica Native AMCAC

  California false indigo · Fabaceae 19 counties
• 
  Amorpha californica Nutt. var. napensis Jeps. Native AMCAN

  Napa false indigo · Fabaceae 4 counties
• 
  Amorpha fruticosa L. Native AMFR

  false indigo bush · Fabaceae 5 counties
• 
  Ampelodesmos mauritanicus (Poir.) T. Dur. & Schinz Introduced AMMA5

  Mauritanian grass · Poaceae 1 county
• 
  Amphibromus neesii Steud. Introduced AMNE4

  Australian wallaby grass · Poaceae 1 county
• 
  Amphipappus fremontii Torr. & A. Gray ex A. Gray Native AMFR2

  Fremont's chaffbush · Asteraceae 3 counties