Ohio

• Adams 39001
  1,331 taxa Open ↗
• Allen 39003
  1,038 taxa Open ↗
• Ashland 39005
  998 taxa Open ↗
• Ashtabula 39007
  1,437 taxa Open ↗
• Athens 39009
  1,149 taxa Open ↗
• Auglaize 39011
  958 taxa Open ↗
• Belmont 39013
  945 taxa Open ↗
• Brown 39015
  629 taxa Open ↗
• Butler 39017
  850 taxa Open ↗
• Carroll 39019
  933 taxa Open ↗

Showing 201–250 of 3,424.

• 
  Apocynum androsaemifolium L. Native APAN2

  spreading dogbane · Apocynaceae 54 counties
• 
  Apocynum cannabinum L. Native APCA

  Indianhemp · Apocynaceae 85 counties
• ⚘
  Apocynum ×floribundum Greene (pro sp.) [androsaemifolium × cannabinum] Native APFL

  Apocynaceae 20 counties
• 
  Aquilegia canadensis L. Native AQCA

  red columbine · Ranunculaceae 63 counties
• 
  Aquilegia vulgaris L. Introduced AQVU

  European columbine · Ranunculaceae 9 counties
• 
  Arabidopsis thaliana (L.) Heynh. Introduced ARTH

  mouseear cress · Brassicaceae 42 counties
• 
  Arabis canadensis L. Native ARCA

  sicklepod · Brassicaceae 47 counties
• 
  Arabis drummondii A. Gray Native ARDR

  Drummond's rockcress · Brassicaceae 7 counties
• 
  Arabis glabra (L.) Bernh. Native ARGL

  tower rockcress · Brassicaceae 34 counties
• 
  Arabis hirsuta (L.) Scop. Native ARHI

  hairy rockcress · Brassicaceae 23 counties
• 
  Arabis hirsuta (L.) Scop. var. pycnocarpa (M. Hopkins) Rollins Native ARHIP

  creamflower rockcress · Brassicaceae 23 counties
• 
  Arabis laevigata (Muhl. ex Willd.) Poir. Native ARLA

  smooth rockcress · Brassicaceae 73 counties
• 
  Arabis laevigata (Muhl. ex Willd.) Poir. var. laevigata Native ARLAL

  smooth rockcress · Brassicaceae 73 counties
• 
  Arabis lyrata L. Native ARLY2

  lyrate rockcress · Brassicaceae 14 counties
• 
  Arabis patens Sull. Native ARPA2

  spreading rockcress · Brassicaceae 4 counties
• 
  Arabis shortii (Fernald) Gleason Native ARSH2

  Short's rockcress · Brassicaceae 23 counties
• 
  Arabis ×divaricarpa A. Nelson (pro sp.) [drummondii × holboellii] Native ARDI2

  spreadingpod rockcress · Brassicaceae 3 counties
• 
  Aralia hispida Vent. Native ARHI2

  bristly sarsaparilla · Araliaceae 7 counties
• 
  Aralia nudicaulis L. Native ARNU2

  wild sarsaparilla · Araliaceae 45 counties
• 
  Aralia racemosa L. Native ARRA

  American spikenard · Araliaceae 69 counties
• 
  Aralia racemosa L. ssp. racemosa Native ARRAR

  American spikenard · Araliaceae 69 counties
• 
  Aralia spinosa L. Native ARSP2

  devil's walkingstick · Araliaceae 22 counties
• 
  Arctium lappa L. Introduced ARLA3

  greater burdock · Asteraceae 21 counties
• 
  Arctium minus Bernh. Introduced ARMI2

  lesser burdock · Asteraceae 64 counties
• 
  Arctostaphylos uva-ursi (L.) Spreng. Native ARUV

  kinnikinnick · Ericaceae 2 counties
• 
  Arenaria serpyllifolia L. Introduced ARSE2

  thymeleaf sandwort · Caryophyllaceae 52 counties
• 
  Arethusa bulbosa L. Native ARBU

  dragon's mouth · Orchidaceae 3 counties
• 
  Argemone albiflora Hornem. Native ARAL3

  bluestem pricklypoppy · Papaveraceae 3 counties
• 
  Argemone albiflora Hornem. ssp. albiflora Native ARALA2

  bluestem pricklypoppy · Papaveraceae 3 counties
• 
  Argemone mexicana L. Native ARME4

  Mexican pricklypoppy · Papaveraceae 5 counties
• 
  Argentina anserina (L.) Rydb. Native ARAN7

  silverweed cinquefoil · Rosaceae 8 counties
• 
  Arisaema dracontium (L.) Schott Native ARDR3

  green dragon · Araceae 68 counties
• 
  Arisaema triphyllum (L.) Schott Native ARTR

  Jack in the pulpit · Araceae 79 counties
• 
  Arisaema triphyllum (L.) Schott ssp. stewardsonii (Britton) Huttleston Native ARTRS

  Jack in the pulpit · Araceae 2 counties
• 
  Arisaema triphyllum (L.) Schott ssp. triphyllum Native ARTRT3

  Jack in the pulpit · Araceae 78 counties
• 
  Aristida dichotoma Michx. Native ARDI4

  churchmouse threeawn · Poaceae 25 counties
• 
  Aristida dichotoma Michx. var. dichotoma Native ARDID

  churchmouse threeawn · Poaceae 25 counties
• 
  Aristida longespica Poir. Native ARLO16

  slimspike threeawn · Poaceae 24 counties
• 
  Aristida oligantha Michx. Native AROL

  prairie threeawn · Poaceae 45 counties
• 
  Aristida purpurascens Poir. Native ARPU8

  arrowfeather threeawn · Poaceae 8 counties
• 
  Aristida purpurascens Poir. var. purpurascens Native ARPUP4

  arrowfeather threeawn · Poaceae 8 counties
• 
  Aristolochia clematitis L. Introduced ARCL

  birthwort · Aristolochiaceae 2 counties
• 
  Aristolochia macrophylla Lam. Native ARMA7

  pipevine · Aristolochiaceae 1 county
• 
  Aristolochia serpentaria L. Native ARSE3

  Virginia snakeroot · Aristolochiaceae 40 counties
• 
  Aristolochia tomentosa Sims Native ARTO3

  woolly dutchman's pipe · Aristolochiaceae 1 county
• 
  Armoracia rusticana G. Gaertn., B. Mey. & Scherb. Introduced ARRU4

  horseradish · Brassicaceae 42 counties
• 
  Arnoglossum atriplicifolium (L.) H. Rob. Native ARAT

  pale Indian plantain · Asteraceae 58 counties
• 
  Arnoglossum plantagineum Raf. Native ARPL4

  groovestem Indian plantain · Asteraceae 4 counties
• 
  Arnoglossum reniforme (Hook.) H. Rob. Native ARRE6

  great Indian plantain · Asteraceae 12 counties
• 
  Arnoseris minima (L.) Schweigg. & Körte Introduced ARMI3

  lamb succory · Asteraceae 1 county