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 1–50 of 766 (introduced).

• 
  Abelmoschus esculentus (L.) Moench Introduced ABES

  okra · Malvaceae 1 county
• 
  Abutilon theophrasti Medik. Introduced ABTH

  velvetleaf · Malvaceae 88 counties
• 
  Acer ginnala Maxim. Introduced ACGI

  Amur maple · Aceraceae 4 counties
• 
  Acer platanoides L. Introduced ACPL

  Norway maple · Aceraceae 9 counties
• 
  Acer pseudoplatanus L. Introduced ACPS

  sycamore maple · Aceraceae 1 county
• 
  Achillea millefolium L. var. millefolium Introduced ACMIM2

  common yarrow · Asteraceae 102 counties
• 
  Acorus calamus L. Introduced ACCA4

  calamus · Acoraceae 63 counties
• 
  Acroptilon repens (L.) DC. Introduced ACRE3

  hardheads · Asteraceae 3 counties
• 
  Aegilops cylindrica Host Introduced AECY

  jointed goatgrass · Poaceae 24 counties
• 
  Aegopodium podagraria L. Introduced AEPO

  bishop's goutweed · Apiaceae 3 counties
• 
  Aesculus hippocastanum L. Introduced AEHI

  horse chestnut · Hippocastanaceae 8 counties
• 
  Aethusa cynapium L. Introduced AECY2

  fool's parsley · Apiaceae 2 counties
• 
  Agropyron cristatum (L.) Gaertn. Introduced AGCR

  crested wheatgrass · Poaceae 2 counties
• 
  Agropyron cristatum (L.) Gaertn. ssp. pectinatum (M. Bieb.) Tzvelev Introduced AGCRP8

  crested wheatgrass · Poaceae 2 counties
• 
  Agropyron desertorum (Fisch. ex Link) Schult. Introduced AGDE2

  desert wheatgrass · Poaceae 2 counties
• 
  Agrostemma githago L. Introduced AGGI

  common corncockle · Caryophyllaceae 44 counties
• 
  Agrostis capillaris L. Introduced AGCA5

  colonial bentgrass · Poaceae 5 counties
• 
  Agrostis gigantea Roth Introduced AGGI2

  redtop · Poaceae 102 counties
• 
  Agrostis stolonifera L. Introduced AGST2

  creeping bentgrass · Poaceae 24 counties
• 
  Ailanthus altissima (Mill.) Swingle Introduced AIAL

  tree of heaven · Simaroubaceae 67 counties
• 
  Aira caryophyllea L. Introduced AICA

  silver hairgrass · Poaceae 2 counties
• 
  Aira caryophyllea L. var. caryophyllea Introduced AICAC2

  silver hairgrass · Poaceae 2 counties
• 
  Ajuga genevensis L. Introduced AJGE

  blue bugle · Lamiaceae 5 counties
• 
  Ajuga reptans L. Introduced AJRE

  common bugle · Lamiaceae 5 counties
• 
  Albizia julibrissin Durazz. Introduced ALJU

  silktree · Fabaceae 33 counties
• 
  Alcea rosea L. Introduced ALRO3

  hollyhock · Malvaceae 30 counties
• 
  Alliaria petiolata (M. Bieb.) Cavara & Grande Introduced ALPE4

  garlic mustard · Brassicaceae 26 counties
• 
  Allium ampeloprasum L. Introduced ALAM

  broadleaf wild leek · Liliaceae 1 county
• 
  Allium atroviolaceum Boiss. Introduced ALAT3

  broadleaf wild leek · Liliaceae 3 counties
• 
  Allium cepa L. Introduced ALCE

  garden onion · Liliaceae 1 county
• 
  Allium fistulosum L. Introduced ALFI4

  welsh onion · Liliaceae 1 county
• 
  Allium porrum L. Introduced ALPO2

  garden leek · Liliaceae 3 counties
• 
  Allium sativum L. Introduced ALSA2

  cultivated garlic · Liliaceae 14 counties
• 
  Allium vineale L. Introduced ALVI

  wild garlic · Liliaceae 102 counties
• 
  Allium vineale L. ssp. vineale Introduced ALVIV

  wild garlic · Liliaceae 102 counties
• 
  Alnus glutinosa (L.) Gaertn. Introduced ALGL2

  European alder · Betulaceae 8 counties
• 
  Alopecurus pratensis L. Introduced ALPR3

  meadow foxtail · Poaceae 11 counties
• 
  Alyssum alyssoides (L.) L. Introduced ALAL3

  pale madwort · Brassicaceae 13 counties
• 
  Amaranthus albus L. Introduced AMAL

  prostrate pigweed · Amaranthaceae 80 counties
• 
  Amaranthus blitoides S. Watson Introduced AMBL

  mat amaranth · Amaranthaceae 60 counties
• 
  Amaranthus caudatus L. Introduced AMCA3

  foxtail amaranth · Amaranthaceae 1 county
• 
  Amaranthus cruentus L. Introduced AMCR4

  red amaranth · Amaranthaceae 11 counties
• 
  Amberboa moschata (L.) DC. Introduced AMMO

  sweetsultan · Asteraceae 1 county
• 
  Ambrosia artemisiifolia L. var. elatior (L.) Descourtils Introduced AMARE

  annual ragweed · Asteraceae 7 counties
• 
  Anagallis arvensis L. Introduced ANAR

  scarlet pimpernel · Primulaceae 26 counties
• 
  Anagallis arvensis L. ssp. arvensis Introduced ANARA7

  scarlet pimpernel · Primulaceae 26 counties
• 
  Anchusa officinalis L. Introduced ANOF

  common bugloss · Boraginaceae 1 county
• 
  Anethum graveolens L. Introduced ANGR2

  dill · Apiaceae 16 counties
• 
  Anthemis arvensis L. Introduced ANAR6

  corn chamomile · Asteraceae 9 counties
• 
  Anthemis cotula L. Introduced ANCO2

  stinking chamomile · Asteraceae 98 counties