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 251–300 of 3,424.

• 
  Aronia melanocarpa (Michx.) Elliott Native ARME6

  black chokeberry · Rosaceae 3 counties
• ⚘
  Aronia ×prunifolia (Marshall) Rehder, (pro sp.) [arbutifolia × melanocarpa] Native ARPR2

  purple chokeberry · Rosaceae 44 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl Introduced AREL3

  tall oatgrass · Poaceae 6 counties
• 
  Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl var. elatius Introduced ARELE

  tall oatgrass · Poaceae 5 counties
• 
  Artemisia absinthium L. Introduced ARAB3

  absinthium · Asteraceae 1 county
• 
  Artemisia annua L. Introduced ARAN3

  sweet sagewort · Asteraceae 24 counties
• 
  Artemisia biennis Willd. Both ARBI2

  biennial wormwood · Asteraceae 13 counties
• 
  Artemisia biennis Willd. var. biennis Introduced ARBIB

  biennial wormwood · Asteraceae 13 counties
• 
  Artemisia campestris L. Native ARCA12

  field sagewort · Asteraceae 5 counties
• 
  Artemisia campestris L. ssp. borealis (Pall.) H.M. Hall & Clem. Native ARCAB2

  field sagewort · Asteraceae 1 county
• 
  Artemisia campestris L. ssp. borealis (Pall.) H.M. Hall & Clem. var. borealis (Pall.) M. Peck Native ARCAB4

  field sagewort · Asteraceae 1 county
• 
  Artemisia campestris L. ssp. caudata (Michx.) H.M. Hall & Clem. Native ARCAC

  field sagewort · Asteraceae 5 counties
• 
  Artemisia ludoviciana Nutt. Both ARLU

  white sagebrush · Asteraceae 23 counties
• 
  Artemisia pontica L. Introduced ARPO4

  Roman wormwood · Asteraceae 7 counties
• 
  Arthraxon hispidus (Thunb.) Makino Introduced ARHI3

  small carpetgrass · Poaceae 3 counties
• 
  Aruncus dioicus (Walter) Fernald Both ARDI8

  bride's feathers · Rosaceae 31 counties
• 
  Aruncus dioicus (Walter) Fernald var. dioicus Native ARDID2

  bride's feathers · Rosaceae 28 counties
• 
  Arundinaria gigantea (Walter) Muhl. Native ARGI

  giant cane · Poaceae 5 counties
• 
  Asarum canadense L. Native ASCA

  Canadian wildginger · Aristolochiaceae 80 counties
• 
  Asclepias amplexicaulis Sm. Native ASAM

  clasping milkweed · Asclepiadaceae 15 counties
• 
  Asclepias exaltata L. Native ASEX

  poke milkweed · Asclepiadaceae 49 counties
• 
  Asclepias hirtella (Pennell) Woodson Native ASHI

  green milkweed · Asclepiadaceae 15 counties
• 
  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae 87 counties
• 
  Asclepias incarnata L. ssp. incarnata Native ASINI

  swamp milkweed · Asclepiadaceae 87 counties
• 
  Asclepias purpurascens L. Native ASPU2

  purple milkweed · Asclepiadaceae 43 counties
• 
  Asclepias quadrifolia Jacq. Native ASQU

  fourleaf milkweed · Asclepiadaceae 61 counties
• 
  Asclepias sullivantii Engelm. ex A. Gray Native ASSU3

  prairie milkweed · Asclepiadaceae 18 counties
• 
  Asclepias syriaca L. Native ASSY

  common milkweed · Asclepiadaceae 86 counties
• 
  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae 75 counties
• 
  Asclepias tuberosa L. ssp. tuberosa Native ASTUT2

  butterfly milkweed · Asclepiadaceae 1 county
• 
  Asclepias variegata L. Native ASVA

  redring milkweed · Asclepiadaceae 10 counties
• 
  Asclepias verticillata L. Native ASVE

  whorled milkweed · Asclepiadaceae 33 counties
• 
  Asclepias viridiflora Raf. Native ASVI

  green comet milkweed · Asclepiadaceae 21 counties
• 
  Asclepias viridis Walter Native ASVI2

  green antelopehorn · Asclepiadaceae 5 counties
• 
  Asimina triloba (L.) Dunal Native ASTR

  pawpaw · Annonaceae 88 counties
• 
  Asparagus officinalis L. Introduced ASOF

  garden asparagus · Liliaceae 1 county
• 
  Asperugo procumbens L. Introduced ASPR

  German-madwort · Boraginaceae 1 county
• 
  Asplenium bradleyi D.C. Eaton Native ASBR2

  Bradley's spleenwort · Aspleniaceae 3 counties
• 
  Asplenium montanum Willd. Native ASMO2

  mountain spleenwort · Aspleniaceae 9 counties
• 
  Asplenium pinnatifidum Nutt. Native ASPI

  lobed spleenwort · Aspleniaceae 25 counties
• 
  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. Native ASPL

  ebony spleenwort · Aspleniaceae 68 counties
• 
  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. var. platyneuron Native ASPLP

  ebony spleenwort · Aspleniaceae 68 counties
• 
  Asplenium resiliens Kunze Native ASRE

  blackstem spleenwort · Aspleniaceae 1 county
• 
  Asplenium rhizophyllum L. Native ASRH2

  walking fern · Aspleniaceae 54 counties
• 
  Asplenium ruta-muraria L. Native ASRU2

  wallrue · Aspleniaceae 5 counties
• 
  Asplenium ruta-muraria L. var. cryptolepis (Fernald) Wherry Native ASRUC

  wallrue · Aspleniaceae 1 county
• ⚘
  Asplenium ×clermontiae Syme [ruta-muraria × trichomanes] Native ASCL3

  spleenwort · Aspleniaceae 1 county
• 
  Asplenium ×ebenoides R.R. Scott (pro sp.) [platyneuron × rhizophyllum] Native ASEB

  spleenwort · Aspleniaceae 5 counties
• ⚘
  Asplenium ×gravesii Maxon (pro sp.) [bradleyi × pinnatifidum] Native ASGR5

  spleenwort · Aspleniaceae 1 county
• ⚘
  Asplenium ×trudellii Wherry (pro sp.) [montanum × pinnatifidum] Native ASTR11

  spleenwort · Aspleniaceae 6 counties