Oklahoma

• Adair 40001
  462 taxa Open ↗
• Alfalfa 40003
  443 taxa Open ↗
• Atoka 40005
  275 taxa Open ↗
• Beaver 40007
  382 taxa Open ↗
• Beckham 40009
  298 taxa Open ↗
• Blaine 40011
  437 taxa Open ↗
• Bryan 40013
  935 taxa Open ↗
• Caddo 40015
  574 taxa Open ↗
• Canadian 40017
  444 taxa Open ↗
• Carter 40019
  424 taxa Open ↗

Showing 201–250 of 2,768.

• 
  Aristida purpurea Nutt. var. wrightii (Nash) Allred Native ARPUW

  Wright's threeawn · Poaceae 5 counties
• 
  Aristida ramosissima Engelm. ex A. Gray Native ARRA2

  s-curve threeawn · Poaceae 1 county
• 
  Aristolochia reticulata Jacq. Native ARRE3

  Texas dutchman's pipe · Aristolochiaceae 1 county
• 
  Aristolochia serpentaria L. Native ARSE3

  Virginia snakeroot · Aristolochiaceae 1 county
• 
  Aristolochia tomentosa Sims Native ARTO3

  woolly dutchman's pipe · Aristolochiaceae 9 counties
• 
  Arnoglossum atriplicifolium (L.) H. Rob. Native ARAT

  pale Indian plantain · Asteraceae 2 counties
• 
  Arnoglossum plantagineum Raf. Native ARPL4

  groovestem Indian plantain · Asteraceae 23 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae 1 county
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl var. elatius Introduced ARELE

  tall oatgrass · Poaceae 1 county
• 
  Artemisia annua L. Introduced ARAN3

  sweet sagewort · Asteraceae 1 county
• 
  Artemisia campestris L. Native ARCA12

  field sagewort · Asteraceae 6 counties
• 
  Artemisia campestris L. ssp. caudata (Michx.) H.M. Hall & Clem. Native ARCAC

  field sagewort · Asteraceae 6 counties
• 
  Artemisia carruthii Alph. Wood ex Carruth. Native ARCA14

  Carruth's sagewort · Asteraceae 8 counties
• 
  Artemisia dracunculus L. Native ARDR4

  tarragon · Asteraceae 7 counties
• 
  Artemisia filifolia Torr. Native ARFI2

  sand sagebrush · Asteraceae 18 counties
• 
  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae 39 counties
• 
  Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

  white sagebrush · Asteraceae 24 counties
• 
  Artemisia ludoviciana Nutt. ssp. mexicana (Willd. ex Spreng.) D.D. Keck Native ARLUM2

  white sagebrush · Asteraceae 25 counties
• 
  Arthraxon hispidus (Thunb.) Makino Introduced ARHI3

  small carpetgrass · Poaceae 1 county
• 
  Aruncus dioicus (Walter) Fernald Both ARDI8

  bride's feathers · Rosaceae 1 county
• 
  Aruncus dioicus (Walter) Fernald var. pubescens (Rydb.) Fernald Native ARDIP

  bride's feathers · Rosaceae 1 county
• 
  Arundinaria gigantea (Walter) Muhl. Native ARGI

  giant cane · Poaceae 21 counties
• 
  Arundinaria tecta (Walter) Muhl. Both ARTE4

  switchcane · Poaceae 4 counties
• 
  Asarum canadense L. Native ASCA

  Canadian wildginger · Aristolochiaceae 5 counties
• 
  Asclepias amplexicaulis Sm. Native ASAM

  clasping milkweed · Asclepiadaceae 24 counties
• 
  Asclepias arenaria Torr. Native ASAR

  sand milkweed · Asclepiadaceae 14 counties
• 
  Asclepias asperula (Decne.) Woodson Native ASAS

  spider milkweed · Asclepiadaceae 31 counties
• 
  Asclepias asperula (Decne.) Woodson ssp. capricornu (Woodson) Woodson Native ASASC

  antelopehorns · Asclepiadaceae 31 counties
• 
  Asclepias engelmanniana Woodson Native ASEN

  Engelmann's milkweed · Asclepiadaceae 14 counties
• 
  Asclepias hirtella (Pennell) Woodson Native ASHI

  green milkweed · Asclepiadaceae 10 counties
• 
  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae 13 counties
• 
  Asclepias incarnata L. ssp. incarnata Native ASINI

  swamp milkweed · Asclepiadaceae 13 counties
• 
  Asclepias involucrata Engelm. ex Torr. Native ASIN14

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

  broadleaf milkweed · Asclepiadaceae 13 counties
• 
  Asclepias macrotis Torr. Native ASMA

  longhood milkweed · Asclepiadaceae 1 county
• 
  Asclepias oenotheroides Cham. & Schltdl. Native ASOE

  zizotes milkweed · Asclepiadaceae 2 counties
• 
  Asclepias pumila (A. Gray) Vail Native ASPU

  plains milkweed · Asclepiadaceae 12 counties
• 
  Asclepias purpurascens L. Native ASPU2

  purple milkweed · Asclepiadaceae 3 counties
• 
  Asclepias quadrifolia Jacq. Native ASQU

  fourleaf milkweed · Asclepiadaceae 3 counties
• 
  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae 11 counties
• 
  Asclepias stenophylla A. Gray Native ASST

  slimleaf milkweed · Asclepiadaceae 29 counties
• 
  Asclepias subverticillata (A. Gray) Vail Native ASSU2

  horsetail milkweed · Asclepiadaceae 1 county
• 
  Asclepias sullivantii Engelm. ex A. Gray Native ASSU3

  prairie milkweed · Asclepiadaceae 3 counties
• 
  Asclepias syriaca L. Native ASSY

  common milkweed · Asclepiadaceae 3 counties
• 
  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae 61 counties
• 
  Asclepias tuberosa L. ssp. interior Woodson Native ASTUI

  butterfly milkweed · Asclepiadaceae 61 counties
• 
  Asclepias verticillata L. Native ASVE

  whorled milkweed · Asclepiadaceae 36 counties
• 
  Asclepias viridiflora Raf. Native ASVI

  green comet milkweed · Asclepiadaceae 29 counties
• 
  Asclepias viridis Walter Native ASVI2

  green antelopehorn · Asclepiadaceae 36 counties
• 
  Asimina triloba (L.) Dunal Native ASTR

  pawpaw · Annonaceae 11 counties