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 201–250 of 766 (introduced).

• 
  Crotalaria spectabilis Roth Introduced CRSP2

  showy rattlebox · Fabaceae 2 counties
• 
  Cruciata pedemontana (Bellardi) Ehrend. Introduced CRPE10

  piedmont bedstraw · Rubiaceae 2 counties
• 
  Crypsis schoenoides (L.) Lam. Introduced CRSC

  swamp pricklegrass · Poaceae 7 counties
• 
  Cucumis sativus L. Introduced CUSA4

  garden cucumber · Cucurbitaceae 2 counties
• 
  Cuscuta epithymum (L.) L. Introduced CUEP

  clover dodder · Cuscutaceae 1 county
• 
  Cydonia oblonga Mill. Introduced CYOB2

  quince · Rosaceae 1 county
• 
  Cymbalaria muralis G. Gaertn., B. Mey. & Scherb. Introduced CYMU

  Kenilworth ivy · Scrophulariaceae 4 counties
• 
  Cynanchum louiseae Kartesz & Gandhi Introduced CYLO11

  Louise's swallow-wort · Asclepiadaceae 7 counties
• 
  Cynodon dactylon (L.) Pers. Introduced CYDA

  Bermudagrass · Poaceae 29 counties
• 
  Cynoglossum officinale L. Introduced CYOF

  gypsyflower · Boraginaceae 60 counties
• 
  Cyperus esculentus L. var. leptostachyus Boeckeler Introduced CYESL

  yellow nutsedge · Cyperaceae 102 counties
• 
  Cyperus iria L. Introduced CYIR

  ricefield flatsedge · Cyperaceae 2 counties
• 
  Dactylis glomerata L. Introduced DAGL

  orchardgrass · Poaceae 102 counties
• 
  Dactylis glomerata L. ssp. glomerata Introduced DAGLG

  orchardgrass · Poaceae 102 counties
• 
  Dactyloctenium aegyptium (L.) Willd. Introduced DAAE

  Egyptian grass · Poaceae 1 county
• 
  Datura stramonium L. Introduced DAST

  jimsonweed · Solanaceae 83 counties
• 
  Daucus carota L. Introduced DACA6

  Queen Anne's lace · Apiaceae 102 counties
• 
  Descurainia sophia (L.) Webb ex Prantl Introduced DESO2

  herb sophia · Brassicaceae 24 counties
• 
  Deutzia scabra Thunb. Introduced DESC4

  fuzzy pride-of-Rochester · Hydrangeaceae 1 county
• 
  Dianthus armeria L. Introduced DIAR

  Deptford pink · Caryophyllaceae 69 counties
• 
  Dianthus barbatus L. Introduced DIBA

  sweetwilliam · Caryophyllaceae 1 county
• 
  Dianthus deltoides L. Introduced DIDE

  maiden pink · Caryophyllaceae 4 counties
• 
  Digitaria ischaemum (Schreb.) Schreb. ex Muhl. Introduced DIIS

  smooth crabgrass · Poaceae 85 counties
• 
  Digitaria sanguinalis (L.) Scop. Introduced DISA

  hairy crabgrass · Poaceae 102 counties
• 
  Dioscorea oppositifolia L. Introduced DIOP

  Chinese yam · Dioscoreaceae 2 counties
• 
  Diplotaxis muralis (L.) DC. Introduced DIMU2

  annual wallrocket · Brassicaceae 8 counties
• 
  Diplotaxis tenuifolia (L.) DC. Introduced DITE4

  perennial wallrocket · Brassicaceae 1 county
• 
  Dipsacus fullonum L. Introduced DIFU2

  Fuller's teasel · Dipsacaceae 35 counties
• 
  Dipsacus laciniatus L. Introduced DILA4

  cutleaf teasel · Dipsacaceae 30 counties
• 
  Draba verna L. Introduced DRVE2

  spring draba · Brassicaceae 51 counties
• 
  Duchesnea indica (Andrews) Teschem. Introduced DUIN2

  Indian strawberry · Rosaceae 10 counties
• 
  Dysphania botrys (L.) Mosyakin & Clemants Introduced DYBO

  Jerusalem oak goosefoot · Chenopodiaceae 27 counties
• 
  Dysphania pumilio (R. Br.) Mosyakin & Clemants Introduced DYPU

  clammy goosefoot · Chenopodiaceae 1 county
• 
  Echinochloa colona (L.) Link Introduced ECCO2

  jungle rice · Poaceae 4 counties
• 
  Echinochloa crus-galli (L.) P. Beauv. Introduced ECCR

  barnyardgrass · Poaceae 14 counties
• ⚘
  Echinochloa frumentacea Link Introduced ECFR

  billion-dollar grass · Poaceae 4 counties
• 
  Echinops sphaerocephalus L. Introduced ECSP

  great globethistle · Asteraceae 7 counties
• 
  Echium vulgare L. Introduced ECVU

  common viper's bugloss · Boraginaceae 13 counties
• 
  Egeria densa Planch. Introduced EGDE

  Brazilian waterweed · Hydrocharitaceae 4 counties
• 
  Eichhornia crassipes (Mart.) Solms Introduced EICR

  common water hyacinth · Pontederiaceae 1 county
• 
  Elaeagnus angustifolia L. Introduced ELAN

  Russian olive · Elaeagnaceae 11 counties
• 
  Elaeagnus multiflora Thunb. Introduced ELMU

  cherry silverberry · Elaeagnaceae 2 counties
• 
  Elaeagnus umbellata Thunb. Introduced ELUM

  autumn olive · Elaeagnaceae 8 counties
• 
  Elaeagnus umbellata Thunb. var. parvifolia (Wall. ex Royle) C.K. Schneid. Introduced ELUMP

  autumn olive · Elaeagnaceae 8 counties
• 
  Eleusine indica (L.) Gaertn. Introduced ELIN3

  Indian goosegrass · Poaceae 88 counties
• 
  Elymus repens (L.) Gould Introduced ELRE4

  quackgrass · Poaceae 78 counties
• 
  Epilobium hirsutum L. Introduced EPHI

  codlins and cream · Onagraceae 3 counties
• 
  Epipactis helleborine (L.) Crantz Introduced EPHE

  broadleaf helleborine · Orchidaceae 5 counties
• 
  Eragrostis barrelieri Daveau Introduced ERBA2

  Mediterranean lovegrass · Poaceae 1 county
• 
  Eragrostis cilianensis (All.) Vign. ex Janchen Introduced ERCI

  stinkgrass · Poaceae 102 counties