Illinois

• Adams 17001
  1,183 taxa Open ↗
• Alexander 17003
  1,220 taxa Open ↗
• Bond 17005
  682 taxa Open ↗
• Boone 17007
  1,163 taxa Open ↗
• Brown 17009
  836 taxa Open ↗
• Bureau 17011
  652 taxa Open ↗
• Calhoun 17013
  1,017 taxa Open ↗
• Carroll 17015
  931 taxa Open ↗
• Cass 17017
  1,389 taxa Open ↗
• Champaign 17019
  1,420 taxa Open ↗

Showing 801–850 of 2,969 (native).

• 
  Croton lindheimerianus Scheele Native CRLI2

  threeseed croton · Euphorbiaceae 1 county
• 
  Croton lindheimerianus Scheele var. lindheimerianus Native CRLIL

  threeseed croton · Euphorbiaceae 1 county
• 
  Croton michauxii G.L. Webster Native CRMI8

  Michaux's croton · Euphorbiaceae 31 counties
• 
  Croton michauxii G.L. Webster var. ellipticus (Willd.) B.W. van Ee & P.E. Berry Native CRMIE

  Michaux's croton · Euphorbiaceae 23 counties
• 
  Croton michauxii G.L. Webster var. michauxii Native CRMIM2

  Michaux's croton · Euphorbiaceae 9 counties
• 
  Croton monanthogynus Michx. Native CRMO6

  prairie tea · Euphorbiaceae 50 counties
• 
  Croton texensis (Klotzsch) Müll. Arg. Native CRTE4

  Texas croton · Euphorbiaceae 1 county
• 
  Croton texensis (Klotzsch) Müll. Arg. var. texensis Native CRTET

  Texas croton · Euphorbiaceae 1 county
• 
  Cryptogramma stelleri (S.G. Gmel.) Prantl Native CRST2

  fragile rockbrake · Pteridaceae 10 counties
• 
  Cryptotaenia canadensis (L.) DC. Native CRCA9

  Canadian honewort · Apiaceae 98 counties
• 
  Cucurbita foetidissima Kunth Native CUFO

  Missouri gourd · Cucurbitaceae 22 counties
• 
  Cucurbita pepo L. var. ovifera (L.) Harz Native CUPEO

  field pumpkin · Cucurbitaceae 10 counties
• 
  Cunila origanoides (L.) Britton Native CUOR

  common dittany · Lamiaceae 23 counties
• 
  Cuphea viscosissima Jacq. Native CUVI

  blue waxweed · Lythraceae 68 counties
• 
  Cuscuta cephalanthi Engelm. Native CUCE

  buttonbush dodder · Cuscutaceae 47 counties
• 
  Cuscuta compacta Juss. ex Choisy Native CUCO2

  compact dodder · Cuscutaceae 16 counties
• 
  Cuscuta compacta Juss. ex Choisy var. compacta Native CUCOC

  compact dodder · Cuscutaceae 16 counties
• 
  Cuscuta coryli Engelm. Native CUCO3

  hazel dodder · Cuscutaceae 21 counties
• 
  Cuscuta cuspidata Engelm. Native CUCU2

  cusp dodder · Cuscutaceae 27 counties
• 
  Cuscuta glomerata Choisy Native CUGL3

  rope dodder · Cuscutaceae 36 counties
• 
  Cuscuta gronovii Willd. ex Schult. Native CUGR

  scaldweed · Cuscutaceae 64 counties
• 
  Cuscuta gronovii Willd. ex Schult. var. gronovii Native CUGRG

  scaldweed · Cuscutaceae 64 counties
• 
  Cuscuta indecora Choisy Native CUIN

  bigseed alfalfa dodder · Cuscutaceae 14 counties
• 
  Cuscuta indecora Choisy var. indecora Native CUINI

  bigseed alfalfa dodder · Cuscutaceae 14 counties
• 
  Cuscuta indecora Choisy var. neuropetala (Engelm.) Hitchc. Native CUINN

  bigseed dodder · Cuscutaceae 2 counties
• 
  Cuscuta pentagona Engelm. Native CUPE3

  fiveangled dodder · Cuscutaceae 36 counties
• 
  Cuscuta pentagona Engelm. var. pentagona Native CUPEP2

  fiveangled dodder · Cuscutaceae 36 counties
• 
  Cuscuta polygonorum Engelm. Native CUPO

  smartweed dodder · Cuscutaceae 29 counties
• 
  Cyclachaena xanthiifolia (Nutt.) Fresen. Native CYXA2

  carelessweed · Asteraceae 15 counties
• 
  Cycloloma atriplicifolium (Spreng.) J.M. Coult. Native CYAT

  winged pigweed · Chenopodiaceae 45 counties
• 
  Cynanchum laeve (Michx.) Pers. Native CYLA

  honeyvine · Asclepiadaceae 73 counties
• 
  Cynoglossum virginianum L. Native CYVI

  wild comfrey · Boraginaceae 27 counties
• 
  Cynoglossum virginianum L. var. virginianum Native CYVIV

  wild comfrey · Boraginaceae 25 counties
• 
  Cynosciadium digitatum DC. Native CYDI2

  finger dogshade · Apiaceae 1 county
• 
  Cyperus acuminatus Torr. & Hook. ex Torr. Native CYAC2

  tapertip flatsedge · Cyperaceae 58 counties
• 
  Cyperus bipartitus Torr. Native CYBI6

  slender flatsedge · Cyperaceae 53 counties
• 
  Cyperus compressus L. Native CYCO

  poorland flatsedge · Cyperaceae 2 counties
• 
  Cyperus croceus Vahl Native CYCR6

  Baldwin's flatsedge · Cyperaceae 1 county
• 
  Cyperus dentatus Torr. Native CYDE2

  toothed flatsedge · Cyperaceae 1 county
• 
  Cyperus diandrus Torr. Native CYDI3

  umbrella flatsedge · Cyperaceae 24 counties
• 
  Cyperus echinatus (L.) Alph. Wood Native CYEC2

  globe flatsedge · Cyperaceae 40 counties
• 
  Cyperus erythrorhizos Muhl. Native CYER2

  redroot flatsedge · Cyperaceae 61 counties
• 
  Cyperus filicinus Vahl Native CYFI

  fern flatsedge · Cyperaceae 1 county
• 
  Cyperus flavescens L. Native CYFL

  yellow flatsedge · Cyperaceae 15 counties
• 
  Cyperus grayoides Mohlenbr. Native CYGR11

  Illinois flatsedge · Cyperaceae 8 counties
• 
  Cyperus houghtonii Torr. Native CYHO

  Houghton's flatsedge · Cyperaceae 9 counties
• 
  Cyperus hystricinus Fernald Native CYHY

  bristly flatsedge · Cyperaceae 1 county
• 
  Cyperus lancastriensis Porter ex A. Gray Native CYLA3

  manyflower flatsedge · Cyperaceae 6 counties
• 
  Cyperus lupulinus (Spreng.) Marcks Native CYLU2

  Great Plains flatsedge · Cyperaceae 66 counties
• 
  Cyperus lupulinus (Spreng.) Marcks ssp. lupulinus Native CYLUL

  Great Plains flatsedge · Cyperaceae 45 counties