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 2,969 (native).

• 
  Arnoglossum plantagineum Raf. Native ARPL4

  groovestem Indian plantain · Asteraceae 48 counties
• 
  Arnoglossum reniforme (Hook.) H. Rob. Native ARRE6

  great Indian plantain · Asteraceae 28 counties
• 
  Aronia melanocarpa (Michx.) Elliott Native ARME6

  black chokeberry · Rosaceae 13 counties
• ⚘
  Aronia ×prunifolia (Marshall) Rehder, (pro sp.) [arbutifolia × melanocarpa] Native ARPR2

  purple chokeberry · Rosaceae 6 counties
• 
  Artemisia campestris L. Native ARCA12

  field sagewort · Asteraceae 31 counties
• 
  Artemisia campestris L. ssp. caudata (Michx.) H.M. Hall & Clem. Native ARCAC

  field sagewort · Asteraceae 31 counties
• 
  Artemisia dracunculus L. Native ARDR4

  tarragon · Asteraceae 10 counties
• 
  Artemisia frigida Willd. Native ARFR4

  prairie sagewort · Asteraceae 1 county
• 
  Artemisia ludoviciana Nutt. ssp. ludoviciana Native ARLUL2

  white sagebrush · Asteraceae 50 counties
• 
  Artemisia serrata Nutt. Native ARSE4

  sawtooth wormwood · Asteraceae 18 counties
• 
  Aruncus dioicus (Walter) Fernald var. dioicus Native ARDID2

  bride's feathers · Rosaceae 1 county
• 
  Aruncus dioicus (Walter) Fernald var. pubescens (Rydb.) Fernald Native ARDIP

  bride's feathers · Rosaceae 3 counties
• 
  Arundinaria gigantea (Walter) Muhl. Native ARGI

  giant cane · Poaceae 28 counties
• 
  Asarum canadense L. Native ASCA

  Canadian wildginger · Aristolochiaceae 84 counties
• 
  Asclepias amplexicaulis Sm. Native ASAM

  clasping milkweed · Asclepiadaceae 58 counties
• 
  Asclepias exaltata L. Native ASEX

  poke milkweed · Asclepiadaceae 47 counties
• 
  Asclepias hirtella (Pennell) Woodson Native ASHI

  green milkweed · Asclepiadaceae 69 counties
• 
  Asclepias incarnata L. Native ASIN

  swamp milkweed · Asclepiadaceae 99 counties
• 
  Asclepias incarnata L. ssp. incarnata Native ASINI

  swamp milkweed · Asclepiadaceae 99 counties
• 
  Asclepias lanuginosa Nutt. Native ASLA3

  sidecluster milkweed · Asclepiadaceae 10 counties
• 
  Asclepias meadii Torr. ex A. Gray Native ASME

  Mead's milkweed · Asclepiadaceae 8 counties
• 
  Asclepias ovalifolia Decne. Native ASOV

  oval-leaf milkweed · Asclepiadaceae 5 counties
• 
  Asclepias perennis Walter Native ASPE

  aquatic milkweed · Asclepiadaceae 15 counties
• 
  Asclepias purpurascens L. Native ASPU2

  purple milkweed · Asclepiadaceae 75 counties
• 
  Asclepias quadrifolia Jacq. Native ASQU

  fourleaf milkweed · Asclepiadaceae 26 counties
• 
  Asclepias speciosa Torr. Native ASSP

  showy milkweed · Asclepiadaceae 1 county
• 
  Asclepias stenophylla A. Gray Native ASST

  slimleaf milkweed · Asclepiadaceae 3 counties
• 
  Asclepias sullivantii Engelm. ex A. Gray Native ASSU3

  prairie milkweed · Asclepiadaceae 59 counties
• 
  Asclepias syriaca L. Native ASSY

  common milkweed · Asclepiadaceae 102 counties
• 
  Asclepias tuberosa L. Native ASTU

  butterfly milkweed · Asclepiadaceae 88 counties
• 
  Asclepias tuberosa L. ssp. interior Woodson Native ASTUI

  butterfly milkweed · Asclepiadaceae 88 counties
• 
  Asclepias variegata L. Native ASVA

  redring milkweed · Asclepiadaceae 15 counties
• 
  Asclepias verticillata L. Native ASVE

  whorled milkweed · Asclepiadaceae 93 counties
• 
  Asclepias viridiflora Raf. Native ASVI

  green comet milkweed · Asclepiadaceae 67 counties
• 
  Asclepias viridis Walter Native ASVI2

  green antelopehorn · Asclepiadaceae 13 counties
• 
  Asimina triloba (L.) Dunal Native ASTR

  pawpaw · Annonaceae 82 counties
• 
  Asplenium bradleyi D.C. Eaton Native ASBR2

  Bradley's spleenwort · Aspleniaceae 4 counties
• 
  Asplenium pinnatifidum Nutt. Native ASPI

  lobed spleenwort · Aspleniaceae 13 counties
• 
  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. Native ASPL

  ebony spleenwort · Aspleniaceae 81 counties
• 
  Asplenium platyneuron (L.) Britton, Sterns & Poggenb. var. platyneuron Native ASPLP

  ebony spleenwort · Aspleniaceae 81 counties
• 
  Asplenium resiliens Kunze Native ASRE

  blackstem spleenwort · Aspleniaceae 4 counties
• 
  Asplenium rhizophyllum L. Native ASRH2

  walking fern · Aspleniaceae 51 counties
• 
  Asplenium trichomanes L. Native ASTR2

  maidenhair spleenwort · Aspleniaceae 15 counties
• 
  Asplenium trichomanes L. ssp. quadrivalens D.E. Mey. Native ASTRQ

  maidenhair spleenwort · Aspleniaceae 1 county
• 
  Asplenium trichomanes L. ssp. trichomanes Native ASTRT

  maidenhair spleenwort · Aspleniaceae 3 counties
• 
  Asplenium ×ebenoides R.R. Scott (pro sp.) [platyneuron × rhizophyllum] Native ASEB

  spleenwort · Aspleniaceae 4 counties
• ⚘
  Asplenium ×gravesii Maxon (pro sp.) [bradleyi × pinnatifidum] Native ASGR5

  spleenwort · Aspleniaceae 2 counties
• ⚘
  Asplenium ×herb-wagneri W.C. Taylor & Mohlenbr. [pinnatifidum × trichomanes] Native ASHE2

  spleenwort · Aspleniaceae 1 county
• ⚘
  Asplenium ×kentuckiense T.N. McCoy (pro sp.) [pinnatifidum × platyneuron] Native ASKE2

  spleenwort · Aspleniaceae 1 county
• ⚘
  Asplenium ×shawneense (R.C. Moran) H.E. Ballard [rhizophyllum × trichomanes] Native ASSH6

  spleenwort · Aspleniaceae 1 county