Arkansas

• Arkansas 05001
  816 taxa Open ↗
• Ashley 05003
  1,236 taxa Open ↗
• Baxter 05005
  1,025 taxa Open ↗
• Benton 05007
  1,372 taxa Open ↗
• Boone 05009
  697 taxa Open ↗
• Bradley 05011
  1,145 taxa Open ↗
• Calhoun 05013
  573 taxa Open ↗
• Carroll 05015
  1,039 taxa Open ↗
• Chicot 05017
  440 taxa Open ↗
• Clark 05019
  896 taxa Open ↗

Showing 651–700 of 3,277.

• 
  Cheilanthes tomentosa Link Native CHTO2

  woolly lipfern · Pteridaceae 26 counties
• 
  Chelone glabra L. Native CHGL2

  white turtlehead · Scrophulariaceae 1 county
• 
  Chelone obliqua L. Native CHOB3

  red turtlehead · Scrophulariaceae 1 county
• 
  Chelone obliqua L. var. speciosa Pennell & Wherry Native CHOBS

  red turtlehead · Scrophulariaceae 1 county
• 
  Chenopodium album L. Both CHAL7

  lambsquarters · Chenopodiaceae 46 counties
• 
  Chenopodium album L. var. album Introduced CHALA

  lambsquarters · Chenopodiaceae 41 counties
• 
  Chenopodium album L. var. missouriense (Aellen) I.J. Bassett & C.W. Crompton Native CHALM2

  Missouri lambsquarters · Chenopodiaceae 19 counties
• 
  Chenopodium album L. var. striatum Krašan Native CHALS2

  lateflowering goosefoot · Chenopodiaceae 3 counties
• 
  Chenopodium berlandieri Moq. Native CHBE4

  pitseed goosefoot · Chenopodiaceae 2 counties
• 
  Chenopodium murale L. Introduced CHMU2

  nettleleaf goosefoot · Chenopodiaceae 4 counties
• 
  Chenopodium pallescens Standl. Native CHPA5

  slimleaf goosefoot · Chenopodiaceae 1 county
• 
  Chenopodium simplex (Torr.) Raf. Native CHSI2

  mapleleaf goosefoot · Chenopodiaceae 6 counties
• 
  Chenopodium standleyanum Aellen Native CHST2

  Standley's goosefoot · Chenopodiaceae 12 counties
• 
  Chionanthus virginicus L. Native CHVI3

  white fringetree · Oleaceae 42 counties
• 
  Chloris verticillata Nutt. Native CHVE2

  tumble windmill grass · Poaceae 4 counties
• 
  Chloris virgata Sw. Native CHVI4

  feather fingergrass · Poaceae 5 counties
• 
  Chorispora tenella (Pall.) DC. Introduced CHTE2

  crossflower · Brassicaceae 3 counties
• 
  Chrysopsis pilosa Nutt. Native CHPI8

  soft goldenaster · Asteraceae 64 counties
• 
  Cichorium intybus L. Introduced CIIN

  chicory · Asteraceae 18 counties
• 
  Cicuta maculata L. Native CIMA2

  spotted water hemlock · Apiaceae 47 counties
• 
  Cinna arundinacea L. Native CIAR2

  sweet woodreed · Poaceae 18 counties
• 
  Circaea lutetiana L. Native CILU

  broadleaf enchanter's nightshade · Onagraceae 20 counties
• 
  Circaea lutetiana L. ssp. canadensis (L.) Asch. & Magnus Native CILUC

  broadleaf enchanter's nightshade · Onagraceae 20 counties
• 
  Cirsium altissimum (L.) Hill Native CIAL2

  tall thistle · Asteraceae 33 counties
• 
  Cirsium arvense (L.) Scop. Introduced CIAR4

  Canada thistle · Asteraceae 1 county
• 
  Cirsium carolinianum (Walter) Fernald & B.G. Schub. Native CICA7

  soft thistle · Asteraceae 33 counties
• 
  Cirsium discolor (Muhl. ex Willd.) Spreng. Native CIDI

  field thistle · Asteraceae 24 counties
• 
  Cirsium horridulum Michx. Native CIHO2

  yellow thistle · Asteraceae 21 counties
• 
  Cirsium horridulum Michx. var. horridulum Native CIHOH

  yellow thistle · Asteraceae 21 counties
• 
  Cirsium muticum Michx. Native CIMU

  swamp thistle · Asteraceae 1 county
• 
  Cirsium virginianum (L.) Michx. Native CIVI

  Virginia thistle · Asteraceae 1 county
• 
  Cirsium vulgare (Savi) Ten. Introduced CIVU

  bull thistle · Asteraceae 25 counties
• 
  Cissus trifoliata (L.) L. Native CITR2

  sorrelvine · Vitaceae 20 counties
• 
  Citrullus lanatus (Thunb.) Matsum. & Nakai Introduced CILA3

  watermelon · Cucurbitaceae 2 counties
• 
  Citrullus lanatus (Thunb.) Matsum. & Nakai var. citroides (L.H. Bailey) Mansf. Introduced CILAC

  watermelon · Cucurbitaceae 1 county
• 
  Citrullus lanatus (Thunb.) Matsum. & Nakai var. lanatus Introduced CILAL

  watermelon · Cucurbitaceae 2 counties
• 
  Cladrastis kentukea (Dum. Cours.) Rudd Native CLKE

  Kentucky yellowwood · Fabaceae 22 counties
• 
  Claytonia caroliniana Michx. Native CLCA

  Carolina springbeauty · Portulacaceae 4 counties
• 
  Claytonia caroliniana Michx. var. caroliniana Native CLCAC

  Carolina springbeauty · Portulacaceae 4 counties
• 
  Claytonia virginica L. Native CLVI3

  Virginia springbeauty · Portulacaceae 66 counties
• 
  Claytonia virginica L. var. acutiflora DC. Native CLVIA

  Virginia springbeauty · Portulacaceae 1 county
• 
  Claytonia virginica L. var. virginica Native CLVIV

  Virginia springbeauty · Portulacaceae 1 county
• 
  Claytonia virginica L. var. virginica f. virginica Native CLVIV2

  Virginia springbeauty · Portulacaceae 1 county
• 
  Clematis crispa L. Native CLCR

  swamp leather flower · Ranunculaceae 28 counties
• 
  Clematis glaucophylla Small Native CLGL

  whiteleaf leather flower · Ranunculaceae 3 counties
• 
  Clematis reticulata Walter Native CLRE

  netleaf leather flower · Ranunculaceae 9 counties
• 
  Clematis terniflora DC. Introduced CLTE4

  sweet autumn virginsbower · Ranunculaceae 19 counties
• 
  Clematis terniflora DC. var. terniflora Introduced CLTET2

  sweet autumn virginsbower · Ranunculaceae 1 county
• 
  Clematis versicolor Small ex Rydb. Native CLVE

  pale leather flower · Ranunculaceae 13 counties
• 
  Clematis viorna L. Native CLVI4

  vasevine · Ranunculaceae 15 counties