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 2,601–2,650 of 2,969 (native).

• 
  Solidago simplex Kunth Native SOSI3

  Mt. Albert goldenrod · Asteraceae 1 county
• 
  Solidago simplex Kunth ssp. randii (Porter) Ringius Native SOSIR

  Rand's goldenrod · Asteraceae 1 county
• 
  Solidago simplex Kunth ssp. randii (Porter) Ringius var. gillmanii (A. Gray) Ringius Native SOSIG2

  Rand's goldenrod · Asteraceae 1 county
• 
  Solidago speciosa Nutt. Native SOSP2

  showy goldenrod · Asteraceae 69 counties
• 
  Solidago sphacelata Raf. Native SOSP4

  autumn goldenrod · Asteraceae 4 counties
• 
  Solidago uliginosa Nutt. Native SOUL

  bog goldenrod · Asteraceae 18 counties
• 
  Solidago uliginosa Nutt. var. uliginosa Native SOULU

  bog goldenrod · Asteraceae 1 county
• 
  Solidago ulmifolia Muhl. ex Willd. Native SOUL2

  elmleaf goldenrod · Asteraceae 100 counties
• 
  Solidago ulmifolia Muhl. ex Willd. var. palmeri Cronquist Native SOULP2

  Palmer's goldenrod · Asteraceae 1 county
• 
  Solidago ulmifolia Muhl. ex Willd. var. ulmifolia Native SOULU2

  elmleaf goldenrod · Asteraceae 100 counties
• 
  Sorbus americana Marshall Native SOAM3

  American mountain ash · Rosaceae 1 county
• 
  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae 102 counties
• 
  Sparganium americanum Nutt. Native SPAM

  American bur-reed · Sparganiaceae 8 counties
• 
  Sparganium androcladum (Engelm.) Morong Native SPAN

  branched bur-reed · Sparganiaceae 8 counties
• 
  Sparganium angustifolium Michx. Native SPAN2

  narrowleaf bur-reed · Sparganiaceae 2 counties
• 
  Sparganium eurycarpum Engelm. Native SPEU

  broadfruit bur-reed · Sparganiaceae 49 counties
• 
  Sparganium natans L. Native SPNA

  small bur-reed · Sparganiaceae 1 county
• 
  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae 89 counties
• 
  Spermacoce glabra Michx. Native SPGL2

  smooth false buttonweed · Rubiaceae 52 counties
• 
  Spermolepis echinata (Nutt. ex DC.) A. Heller Native SPEC2

  bristly scaleseed · Apiaceae 5 counties
• 
  Spermolepis inermis (Nutt. ex DC.) Mathias & Constance Native SPIN

  Red River scaleseed · Apiaceae 16 counties
• 
  Sphenopholis intermedia (Rydb.) Rydb. Native SPIN3

  slender wedgescale · Poaceae 92 counties
• 
  Sphenopholis nitida (Biehler) Scribn. Native SPNI

  shiny wedgescale · Poaceae 15 counties
• 
  Sphenopholis obtusata (Michx.) Scribn. Native SPOB

  prairie wedgescale · Poaceae 71 counties
• 
  Spigelia marilandica (L.) L. Native SPMA3

  woodland pinkroot · Loganiaceae 15 counties
• 
  Spiraea alba Du Roi Native SPAL2

  white meadowsweet · Rosaceae 36 counties
• 
  Spiraea alba Du Roi var. alba Native SPALA

  white meadowsweet · Rosaceae 3 counties
• 
  Spiraea alba Du Roi var. latifolia (Aiton) Dippel Native SPALL

  white meadowsweet · Rosaceae 2 counties
• 
  Spiraea tomentosa L. Native SPTO2

  steeplebush · Rosaceae 9 counties
• 
  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae 63 counties
• 
  Spiranthes lacera (Raf.) Raf. Native SPLA4

  northern slender lady's tresses · Orchidaceae 37 counties
• 
  Spiranthes lacera (Raf.) Raf. var. gracilis (Bigelow) Luer Native SPLAG

  northern slender lady's tresses · Orchidaceae 14 counties
• 
  Spiranthes lucida (H.H. Eaton) Ames Native SPLU2

  shining lady's tresses · Orchidaceae 5 counties
• 
  Spiranthes magnicamporum Sheviak Native SPMA5

  Great Plains lady's tresses · Orchidaceae 45 counties
• 
  Spiranthes ovalis Lindl. Native SPOV

  October lady's tresses · Orchidaceae 16 counties
• 
  Spiranthes ovalis Lindl. var. erostellata Catling Native SPOVE

  October lady's tresses · Orchidaceae 16 counties
• 
  Spiranthes romanzoffiana Cham. Native SPRO

  hooded lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes tuberosa Raf. Native SPTU

  little lady's tresses · Orchidaceae 12 counties
• 
  Spiranthes vernalis Engelm. & A. Gray Native SPVE

  spring lady's tresses · Orchidaceae 7 counties
• 
  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae 81 counties
• 
  Sporobolus clandestinus (Biehler) Hitchc. Native SPCL

  rough dropseed · Poaceae 21 counties
• 
  Sporobolus compositus (Poir.) Merr. Native SPCO16

  composite dropseed · Poaceae 85 counties
• 
  Sporobolus compositus (Poir.) Merr. var. compositus Native SPCOC2

  composite dropseed · Poaceae 84 counties
• 
  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae 48 counties
• 
  Sporobolus heterolepis (A. Gray) A. Gray Native SPHE

  prairie dropseed · Poaceae 48 counties
• 
  Sporobolus neglectus Nash Native SPNE2

  puffsheath dropseed · Poaceae 51 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood Native SPVA

  poverty dropseed · Poaceae 70 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood var. ozarkanus (Fernald) Shinners Native SPVAO

  Ozark dropseed · Poaceae 1 county
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood var. vaginiflorus Native SPVAV2

  poverty dropseed · Poaceae 58 counties
• 
  Stachys aspera Michx. Native STAS

  hyssopleaf hedgenettle · Lamiaceae 45 counties