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 301–350 of 3,775.

• 
  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
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  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
• 
  Asparagus officinalis L. Introduced ASOF

  garden asparagus · Liliaceae 85 counties
• 
  Asperugo procumbens L. Introduced ASPR

  German-madwort · Boraginaceae 1 county
• 
  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
• ⚘
  Asplenium ×trudellii Wherry (pro sp.) [montanum × pinnatifidum] Native ASTR11

  spleenwort · Aspleniaceae 1 county
• 
  Aster tataricus L. f. Introduced ASTA

  Tatarian aster · Asteraceae 4 counties
• 
  Astragalus agrestis Douglas ex G. Don Native ASAG2

  purple milkvetch · Fabaceae 1 county
• 
  Astragalus canadensis L. Native ASCA11

  Canadian milkvetch · Fabaceae 59 counties
• 
  Astragalus canadensis L. var. canadensis Native ASCAC6

  Canadian milkvetch · Fabaceae 59 counties
• 
  Astragalus crassicarpus Nutt. Native ASCR2

  groundplum milkvetch · Fabaceae 4 counties
• 
  Astragalus crassicarpus Nutt. var. trichocalyx (Nutt.) Barneby Native ASCRT

  groundplum milkvetch · Fabaceae 4 counties
• 
  Astragalus distortus Torr. & A. Gray Native ASDI4

  Ozark milkvetch · Fabaceae 8 counties
• 
  Astragalus distortus Torr. & A. Gray var. distortus Native ASDID3

  Ozark milkvetch · Fabaceae 8 counties
• 
  Astragalus tennesseensis A. Gray ex Chapm. Native ASTE7

  Tennessee milkvetch · Fabaceae 8 counties
• 
  Athyrium filix-femina (L.) Roth Native ATFI

  common ladyfern · Dryopteridaceae 73 counties
• 
  Athyrium filix-femina (L.) Roth ssp. angustum (Willd.) R.T. Clausen Native ATFIA

  subarctic ladyfern · Dryopteridaceae 73 counties
• 
  Athyrium filix-femina (L.) Roth ssp. asplenioides (Michx.) Hultén Native ATFIA2

  asplenium ladyfern · Dryopteridaceae 8 counties
• 
  Atriplex argentea Nutt. Native ATAR2

  silverscale saltbush · Chenopodiaceae 3 counties
• 
  Atriplex argentea Nutt. ssp. argentea Native ATARA

  silverscale saltbush · Chenopodiaceae 3 counties
• 
  Atriplex argentea Nutt. ssp. argentea var. argentea Native ATARA2

  silverscale saltbush · Chenopodiaceae 3 counties
• 
  Atriplex glabriuscula Edmondston Native ATGL

  Scotland orache · Chenopodiaceae 1 county
• 
  Atriplex hortensis L. Introduced ATHO

  garden orache · Chenopodiaceae 3 counties