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 701–750 of 3,424.

• 
  Centaurea jacea L. Introduced CEJA

  brownray knapweed · Asteraceae 14 counties
• 
  Centaurea nigra L. Introduced CENI2

  lesser knapweed · Asteraceae 12 counties
• 
  Centaurea nigrescens Willd. Introduced CENI3

  Tyrol knapweed · Asteraceae 1 county
• 
  Centaurea scabiosa L. Introduced CESC2

  greater knapweed · Asteraceae 1 county
• 
  Centaurea solstitialis L. Introduced CESO3

  yellow star-thistle · Asteraceae 10 counties
• 
  Centaurea stoebe L. Introduced CEST8

  spotted knapweed · Asteraceae 24 counties
• 
  Centaurea stoebe L. ssp. micranthos (Gugler) Hayek Introduced CESTM

  spotted knapweed · Asteraceae 24 counties
• ⚘
  Centaurea transalpina Schleich. ex DC. Native CETR6

  alpine knapweed · Asteraceae 14 counties
• 
  Centaurium erythraea Rafn Introduced CEER5

  European centaury · Gentianaceae 2 counties
• 
  Centaurium pulchellum (Sw.) Druce Introduced CEPU3

  branched centaury · Gentianaceae 4 counties
• 
  Cephalanthus occidentalis L. Native CEOC2

  common buttonbush · Rubiaceae 85 counties
• 
  Cerastium arvense L. Both CEAR4

  field chickweed · Caryophyllaceae 24 counties
• 
  Cerastium fontanum Baumg. Introduced CEFO2

  common mouse-ear chickweed · Caryophyllaceae 67 counties
• 
  Cerastium fontanum Baumg. ssp. vulgare (Hartm.) Greuter & Burdet Introduced CEFOV2

  big chickweed · Caryophyllaceae 67 counties
• 
  Cerastium glomeratum Thuill. Introduced CEGL2

  sticky chickweed · Caryophyllaceae 31 counties
• 
  Cerastium nutans Raf. Native CENU2

  nodding chickweed · Caryophyllaceae 58 counties
• 
  Cerastium nutans Raf. var. nutans Native CENUN

  nodding chickweed · Caryophyllaceae 58 counties
• 
  Cerastium tomentosum L. Introduced CETO2

  snow in summer · Caryophyllaceae 2 counties
• 
  Ceratocephala testiculata (Crantz) Roth Introduced CETE5

  curveseed butterwort · Ranunculaceae 1 county
• 
  Ceratophyllum demersum L. Native CEDE4

  coon's tail · Ceratophyllaceae 35 counties
• 
  Ceratophyllum echinatum A. Gray Native CEEC2

  spineless hornwort · Ceratophyllaceae 11 counties
• 
  Cercis canadensis L. Native CECA4

  eastern redbud · Fabaceae 75 counties
• 
  Cercis canadensis L. var. canadensis Native CECAC

  eastern redbud · Fabaceae 75 counties
• 
  Chaenomeles speciosa (Sweet) Nakai Introduced CHSP12

  flowering quince · Rosaceae 4 counties
• 
  Chaenorhinum minus (L.) Lange Introduced CHMI

  dwarf snapdragon · Scrophulariaceae 79 counties
• 
  Chaerophyllum procumbens (L.) Crantz Native CHPR

  spreading chervil · Apiaceae 73 counties
• 
  Chaerophyllum procumbens (L.) Crantz var. procumbens Native CHPRP

  spreading chervil · Apiaceae 72 counties
• 
  Chaerophyllum procumbens (L.) Crantz var. shortii Torr. & A. Gray Native CHPRS

  Short's spreading chervil · Apiaceae 17 counties
• 
  Chaiturus marrubiastrum (L.) Rchb. Introduced CHMA18

  lion's tail · Lamiaceae 10 counties
• 
  Chamaecrista fasciculata (Michx.) Greene Native CHFA2

  partridge pea · Fabaceae 38 counties
• 
  Chamaecrista fasciculata (Michx.) Greene var. fasciculata Native CHFAF

  partridge pea · Fabaceae 38 counties
• 
  Chamaecrista nictitans (L.) Moench Native CHNI2

  sensitive partridge pea · Fabaceae 30 counties
• 
  Chamaecrista nictitans (L.) Moench ssp. nictitans Native CHNIN

  sensitive partridge pea · Fabaceae 30 counties
• 
  Chamaecrista nictitans (L.) Moench ssp. nictitans var. nictitans Native CHNIN2

  sensitive partridge pea · Fabaceae 30 counties
• 
  Chamaedaphne calyculata (L.) Moench Native CHCA2

  leatherleaf · Ericaceae 10 counties
• 
  Chamaelirium luteum (L.) A. Gray Native CHLU

  fairywand · Liliaceae 30 counties
• 
  Chamaesyce hirta (L.) Millsp. Native CHHI3

  pillpod sandmat · Euphorbiaceae 1 county
• 
  Chamaesyce humistrata (Engelm. ex A. Gray) Small Native CHHU3

  spreading sandmat · Euphorbiaceae 12 counties
• 
  Chamaesyce maculata (L.) Small Native CHMA15

  spotted sandmat · Euphorbiaceae 75 counties
• 
  Chamaesyce nutans (Lag.) Small Native CHNU9

  eyebane · Euphorbiaceae 82 counties
• 
  Chamaesyce polygonifolia (L.) Small Native CHPO6

  seaside sandmat · Euphorbiaceae 7 counties
• 
  Chamaesyce prostrata (Aiton) Small Native CHPR6

  prostrate sandmat · Euphorbiaceae 3 counties
• 
  Chamaesyce serpens (Kunth) Small Native CHSE4

  matted sandmat · Euphorbiaceae 9 counties
• 
  Chamaesyce vermiculata (Raf.) House Native CHVE5

  wormseed sandmat · Euphorbiaceae 19 counties
• 
  Chamerion angustifolium (L.) Holub Native CHAN9

  fireweed · Onagraceae 22 counties
• 
  Chamerion angustifolium (L.) Holub ssp. circumvagum (Mosquin) Hoch Native CHANC

  fireweed · Onagraceae 22 counties
• 
  Chasmanthium latifolium (Michx.) Yates Native CHLA5

  Indian woodoats · Poaceae 9 counties
• 
  Cheilanthes lanosa (Michx.) D.C. Eaton Native CHLA2

  hairy lipfern · Pteridaceae 1 county
• 
  Chelidonium majus L. Introduced CHMA2

  celandine · Papaveraceae 47 counties
• 
  Chelidonium majus L. var. majus Introduced CHMAM

  celandine · Papaveraceae 47 counties