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 851–900 of 3,424.

• 
  Corallorhiza odontorhiza (Willd.) Poir. var. odontorhiza Native COODO2

  autumn coralroot · Orchidaceae 18 counties
• 
  Corallorhiza trifida Chatelain Native COTR18

  yellow coralroot · Orchidaceae 2 counties
• 
  Corallorhiza wisteriana Conrad Native COWI5

  spring coralroot · Orchidaceae 13 counties
• 
  Coreopsis auriculata L. Native COAU

  lobed tickseed · Asteraceae 1 county
• 
  Coreopsis grandiflora Hogg ex Sweet Native COGR5

  largeflower tickseed · Asteraceae 11 counties
• 
  Coreopsis grandiflora Hogg ex Sweet var. harveyana (A. Gray) Sherff Native COGRH

  largeflower tickseed · Asteraceae 11 counties
• 
  Coreopsis lanceolata L. Native COLA5

  lanceleaf tickseed · Asteraceae 17 counties
• 
  Coreopsis major Walter Native COMA6

  greater tickseed · Asteraceae 6 counties
• 
  Coreopsis tinctoria Nutt. Native COTI3

  golden tickseed · Asteraceae 14 counties
• 
  Coreopsis tinctoria Nutt. var. tinctoria Native COTIT

  golden tickseed · Asteraceae 14 counties
• 
  Coreopsis tripteris L. Native COTR4

  tall tickseed · Asteraceae 54 counties
• 
  Coreopsis verticillata L. Native COVE5

  whorled tickseed · Asteraceae 1 county
• 
  Coriandrum sativum L. Introduced COSA

  coriander · Apiaceae 1 county
• 
  Corispermum americanum (Nutt.) Nutt. Native COAM8

  American bugseed · Chenopodiaceae 3 counties
• 
  Corispermum americanum (Nutt.) Nutt. var. americanum Native COAMA2

  American bugseed · Chenopodiaceae 3 counties
• 
  Cornus alternifolia L. f. Native COAL2

  alternateleaf dogwood · Cornaceae 78 counties
• 
  Cornus amomum Mill. Native COAM2

  silky dogwood · Cornaceae 77 counties
• 
  Cornus canadensis L. Native COCA13

  bunchberry dogwood · Cornaceae 9 counties
• 
  Cornus drummondii C.A. Mey. Native CODR

  roughleaf dogwood · Cornaceae 57 counties
• 
  Cornus florida L. Native COFL2

  flowering dogwood · Cornaceae 84 counties
• 
  Cornus obliqua Raf. Native COOB9

  silky dogwood · Cornaceae 3 counties
• 
  Cornus racemosa Lam. Native CORA6

  gray dogwood · Cornaceae 75 counties
• 
  Cornus rugosa Lam. Native CORU

  roundleaf dogwood · Cornaceae 11 counties
• 
  Cornus sericea L. Native COSE16

  redosier dogwood · Cornaceae 30 counties
• 
  Cornus sericea L. ssp. sericea Native COSES

  redosier dogwood · Cornaceae 30 counties
• 
  Coronilla scorpioides (L.) W.D.J. Koch Introduced COSC5

  yellow crownvetch · Fabaceae 1 county
• 
  Coronopus didymus (L.) Sm. Introduced CODI6

  lesser swinecress · Brassicaceae 4 counties
• 
  Corydalis aurea Willd. Native COAU2

  scrambled eggs · Fumariaceae 1 county
• 
  Corydalis flavula (Raf.) DC. Native COFL3

  yellow fumewort · Fumariaceae 34 counties
• 
  Corydalis sempervirens (L.) Pers. Native COSE5

  rock harlequin · Fumariaceae 17 counties
• 
  Corylus americana Walter Native COAM3

  American hazelnut · Betulaceae 87 counties
• 
  Corylus cornuta Marshall Native COCO6

  beaked hazelnut · Betulaceae 2 counties
• 
  Corylus cornuta Marshall var. cornuta Native COCOC2

  beaked hazelnut · Betulaceae 2 counties
• 
  Cosmos bipinnatus Cav. Introduced COBI2

  garden cosmos · Asteraceae 3 counties
• 
  Cotinus coggygria Scop. Introduced COCO10

  European smoketree · Anacardiaceae 4 counties
• 
  Cotoneaster apiculatus Rehder & E.H. Wilson Introduced COAP3

  cranberry cotoneaster · Rosaceae 1 county
• 
  Cotoneaster simonsii Baker Introduced COSI82

  Simons' cotoneaster · Rosaceae 1 county
• 
  Crataegus brainerdii Sarg. Native CRBR3

  Brainerd's hawthorn · Rosaceae 3 counties
• 
  Crataegus calpodendron (Ehrh.) Medik. Native CRCA

  pear hawthorn · Rosaceae 33 counties
• 
  Crataegus chrysocarpa Ashe Native CRCH

  fireberry hawthorn · Rosaceae 59 counties
• 
  Crataegus chrysocarpa Ashe var. chrysocarpa Native CRCHC2

  red haw · Rosaceae 59 counties
• 
  Crataegus crus-galli L. Native CRCR2

  cockspur hawthorn · Rosaceae 58 counties
• 
  Crataegus disperma Ashe Native CRDI4

  spreading hawthorn · Rosaceae 1 county
• 
  Crataegus flabellata (Bosc ex Spach) K. Koch Native CRFL

  fanleaf hawthorn · Rosaceae 42 counties
• 
  Crataegus intricata Lange Native CRIN3

  Copenhagen hawthorn · Rosaceae 19 counties
• 
  Crataegus macrosperma Ashe Native CRMA3

  bigfruit hawthorn · Rosaceae 3 counties
• 
  Crataegus margarettiae Ashe Native CRMA4

  Margarett's hawthorn · Rosaceae 2 counties
• 
  Crataegus mollis Scheele Native CRMO2

  downy hawthorn · Rosaceae 51 counties
• 
  Crataegus monogyna Jacq. Introduced CRMO3

  oneseed hawthorn · Rosaceae 7 counties
• 
  Crataegus phaenopyrum (L. f.) Medik. Native CRPH

  Washington hawthorn · Rosaceae 9 counties