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 1,251–1,300 of 2,969 (native).

• 
  Geum triflorum Pursh Native GETR

  old man's whiskers · Rosaceae 9 counties
• 
  Geum triflorum Pursh var. triflorum Native GETRT

  old man's whiskers · Rosaceae 9 counties
• 
  Geum vernum (Raf.) Torr. & A. Gray Native GEVE

  spring avens · Rosaceae 59 counties
• 
  Geum virginianum L. Native GEVI4

  cream avens · Rosaceae 8 counties
• 
  Gilia capitata Sims Native GICA5

  bluehead gilia · Polemoniaceae 1 county
• 
  Gilia capitata Sims ssp. capitata Native GICAC3

  bluehead gilia · Polemoniaceae 1 county
• 
  Gillenia stipulata (Muhl. ex Willd.) Baill. Native GIST5

  American ipecac · Rosaceae 48 counties
• 
  Gillenia trifoliata (L.) Moench Native GITR6

  Bowman's root · Rosaceae 1 county
• 
  Glandularia canadensis (L.) Nutt. Native GLCA2

  rose mock vervain · Verbenaceae 41 counties
• 
  Gleditsia aquatica Marshall Native GLAQ

  water locust · Fabaceae 18 counties
• 
  Gleditsia triacanthos L. Native GLTR

  honeylocust · Fabaceae 100 counties
• ⚘
  Gleditsia ×texana Sarg. (pro sp.) [aquatica × triacanthos] Native GLTE

  hybrid honeylocust · Fabaceae 1 county
• 
  Glyceria arkansana Fernald Native GLAR

  Arkansas mannagrass · Poaceae 2 counties
• 
  Glyceria borealis (Nash) Batchelder Native GLBO

  small floating mannagrass · Poaceae 4 counties
• 
  Glyceria canadensis (Michx.) Trin. Native GLCA

  rattlesnake mannagrass · Poaceae 2 counties
• 
  Glyceria grandis S. Watson Native GLGR

  American mannagrass · Poaceae 9 counties
• 
  Glyceria grandis S. Watson var. grandis Native GLGRG

  American mannagrass · Poaceae 9 counties
• 
  Glyceria septentrionalis Hitchc. Native GLSE3

  floating mannagrass · Poaceae 38 counties
• 
  Glyceria striata (Lam.) Hitchc. Native GLST

  fowl mannagrass · Poaceae 102 counties
• 
  Glycyrrhiza lepidota Pursh Native GLLE3

  American licorice · Fabaceae 11 counties
• 
  Goodyera pubescens (Willd.) R. Br. Native GOPU

  downy rattlesnake plantain · Orchidaceae 25 counties
• 
  Gossypium hirsutum L. Native GOHI

  upland cotton · Malvaceae 3 counties
• 
  Gossypium hirsutum L. var. hirsutum Native GOHIH2

  upland cotton · Malvaceae 3 counties
• 
  Gratiola aurea Pursh Native GRAU

  golden hedgehyssop · Scrophulariaceae 1 county
• 
  Gratiola neglecta Torr. Native GRNE

  clammy hedgehyssop · Scrophulariaceae 75 counties
• 
  Gratiola quartermaniae D. Estes Native GRQU2

  Limestone hedgehyssop · Scrophulariaceae 1 county
• 
  Gratiola virginiana L. Native GRVI

  roundfruit hedgehyssop · Scrophulariaceae 35 counties
• 
  Gratiola virginiana L. var. virginiana Native GRVIV

  roundfruit hedgehyssop · Scrophulariaceae 35 counties
• 
  Grindelia lanceolata Nutt. Native GRLA3

  narrowleaf gumweed · Asteraceae 1 county
• 
  Grindelia lanceolata Nutt. var. lanceolata Native GRLAL

  narrowleaf gumweed · Asteraceae 1 county
• 
  Grindelia papposa G.L. Nesom & Suh Native GRPA8

  Spanish gold · Asteraceae 11 counties
• 
  Grindelia squarrosa (Pursh) Dunal Native GRSQ

  curlycup gumweed · Asteraceae 33 counties
• 
  Grindelia squarrosa (Pursh) Dunal var. squarrosa Native GRSQS2

  curlycup gumweed · Asteraceae 1 county
• 
  Gutierrezia texana (DC.) Torr. & A. Gray Native GUTE2

  Texas snakeweed · Asteraceae 1 county
• 
  Gutierrezia texana (DC.) Torr. & A. Gray var. texana Native GUTET

  Texas snakeweed · Asteraceae 1 county
• 
  Gymnocarpium dryopteris (L.) Newman Native GYDR

  western oakfern · Dryopteridaceae 6 counties
• 
  Gymnocarpium robertianum (Hoffm.) Newman Native GYRO

  scented oakfern · Dryopteridaceae 1 county
• 
  Gymnocladus dioicus (L.) K. Koch Native GYDI

  Kentucky coffeetree · Fabaceae 73 counties
• 
  Gymnopogon ambiguus (Michx.) Britton, Sterns & Poggenb. Native GYAM

  bearded skeletongrass · Poaceae 2 counties
• 
  Hackelia deflexa (Wahlenb.) Opiz Native HADE

  nodding stickseed · Boraginaceae 4 counties
• 
  Hackelia deflexa (Wahlenb.) Opiz var. americana (A. Gray) Fernald & I.M. Johnst. Native HADEA

  American stickseed · Boraginaceae 4 counties
• 
  Hackelia virginiana (L.) I.M. Johnst. Native HAVI2

  beggarslice · Boraginaceae 79 counties
• 
  Halesia tetraptera Ellis Native HATE3

  mountain silverbell · Styracaceae 3 counties
• 
  Halesia tetraptera Ellis var. tetraptera Native HATET

  mountain silverbell · Styracaceae 2 counties
• 
  Hamamelis vernalis Sarg. Native HAVE2

  Ozark witchhazel · Hamamelidaceae 1 county
• 
  Hamamelis virginiana L. Native HAVI4

  American witchhazel · Hamamelidaceae 25 counties
• 
  Hasteola suaveolens (L.) Pojark. Native HASU3

  false Indian plantain · Asteraceae 15 counties
• 
  Hedeoma hispida Pursh Native HEHI

  rough false pennyroyal · Lamiaceae 56 counties
• 
  Hedeoma pulegioides (L.) Pers. Native HEPU

  American false pennyroyal · Lamiaceae 92 counties
• 
  Helenium amarum (Raf.) H. Rock Native HEAM

  sneezeweed · Asteraceae 33 counties