Wisconsin

• Adams 55001
  1,200 taxa Open ↗
• Ashland 55003
  1,200 taxa Open ↗
• Barron 55005
  823 taxa Open ↗
• Bayfield 55007
  1,332 taxa Open ↗
• Brown 55009
  1,537 taxa Open ↗
• Buffalo 55011
  853 taxa Open ↗
• Burnett 55013
  863 taxa Open ↗
• Calumet 55015
  578 taxa Open ↗
• Chippewa 55017
  984 taxa Open ↗
• Clark 55019
  762 taxa Open ↗

Showing 2,201–2,250 of 2,520 (native).

• 
  Sorbus americana Marshall Native SOAM3

  American mountain ash · Rosaceae 7 counties
• 
  Sorbus decora (Sarg.) C.K. Schneid. Native SODE3

  northern mountain ash · Rosaceae 5 counties
• 
  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae 49 counties
• 
  Sparganium americanum Nutt. Native SPAM

  American bur-reed · Sparganiaceae 22 counties
• 
  Sparganium androcladum (Engelm.) Morong Native SPAN

  branched bur-reed · Sparganiaceae 10 counties
• 
  Sparganium angustifolium Michx. Native SPAN2

  narrowleaf bur-reed · Sparganiaceae 41 counties
• 
  Sparganium emersum Rehmann Native SPEM2

  European bur-reed · Sparganiaceae 1 county
• 
  Sparganium eurycarpum Engelm. Native SPEU

  broadfruit bur-reed · Sparganiaceae 53 counties
• 
  Sparganium fluctuans (Engelm. ex Morong) B.L. Rob. Native SPFL

  floating bur-reed · Sparganiaceae 11 counties
• 
  Sparganium glomeratum (Beurling ex Laest.) L. Neum. Native SPGL

  clustered bur-reed · Sparganiaceae 2 counties
• 
  Sparganium natans L. Native SPNA

  small bur-reed · Sparganiaceae 13 counties
• 
  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae 54 counties
• 
  Spergularia salina J. Presl & C. Presl Native SPSA5

  salt sandspurry · Caryophyllaceae 5 counties
• 
  Spermolepis inermis (Nutt. ex DC.) Mathias & Constance Native SPIN

  Red River scaleseed · Apiaceae 1 county
• 
  Sphenopholis intermedia (Rydb.) Rydb. Native SPIN3

  slender wedgescale · Poaceae 56 counties
• 
  Sphenopholis nitida (Biehler) Scribn. Native SPNI

  shiny wedgescale · Poaceae 1 county
• 
  Sphenopholis obtusata (Michx.) Scribn. Native SPOB

  prairie wedgescale · Poaceae 20 counties
• 
  Spiraea alba Du Roi Native SPAL2

  white meadowsweet · Rosaceae 66 counties
• 
  Spiraea alba Du Roi var. alba Native SPALA

  white meadowsweet · Rosaceae 66 counties
• 
  Spiraea tomentosa L. Native SPTO2

  steeplebush · Rosaceae 44 counties
• 
  Spiranthes casei Catling & Cruise Native SPCA6

  Case's lady's tresses · Orchidaceae 18 counties
• 
  Spiranthes casei Catling & Cruise var. casei Native SPCAC4

  Case's lady's tresses · Orchidaceae 18 counties
• 
  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae 53 counties
• 
  Spiranthes lacera (Raf.) Raf. Native SPLA4

  northern slender lady's tresses · Orchidaceae 31 counties
• 
  Spiranthes lacera (Raf.) Raf. var. gracilis (Bigelow) Luer Native SPLAG

  northern slender lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes lacera (Raf.) Raf. var. lacera Native SPLAL

  northern slender lady's tresses · Orchidaceae 29 counties
• 
  Spiranthes magnicamporum Sheviak Native SPMA5

  Great Plains lady's tresses · Orchidaceae 16 counties
• 
  Spiranthes ovalis Lindl. Native SPOV

  October lady's tresses · Orchidaceae 1 county
• 
  Spiranthes ovalis Lindl. var. erostellata Catling Native SPOVE

  October lady's tresses · Orchidaceae 1 county
• 
  Spiranthes romanzoffiana Cham. Native SPRO

  hooded lady's tresses · Orchidaceae 30 counties
• ⚘
  Spiranthes ×simpsonii Catling & Sheviak [lacera × romanzoffiana] Native SPSI6

  lady's tresses · Orchidaceae 1 county
• 
  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae 58 counties
• 
  Sporobolus clandestinus (Biehler) Hitchc. Native SPCL

  rough dropseed · Poaceae 2 counties
• 
  Sporobolus compositus (Poir.) Merr. Native SPCO16

  composite dropseed · Poaceae 25 counties
• 
  Sporobolus compositus (Poir.) Merr. var. compositus Native SPCOC2

  composite dropseed · Poaceae 25 counties
• 
  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae 45 counties
• 
  Sporobolus heterolepis (A. Gray) A. Gray Native SPHE

  prairie dropseed · Poaceae 33 counties
• 
  Sporobolus neglectus Nash Native SPNE2

  puffsheath dropseed · Poaceae 17 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood Native SPVA

  poverty dropseed · Poaceae 46 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood var. vaginiflorus Native SPVAV2

  poverty dropseed · Poaceae 46 counties
• 
  Stachys aspera Michx. Native STAS

  hyssopleaf hedgenettle · Lamiaceae 1 county
• 
  Stachys hyssopifolia Michx. Native STHY3

  hyssopleaf hedgenettle · Lamiaceae 1 county
• 
  Stachys palustris L. Native STPA

  marsh hedgenettle · Lamiaceae 58 counties
• 
  Stachys pilosa Nutt. Native STPI6

  hairy hedgenettle · Lamiaceae 19 counties
• 
  Stachys pilosa Nutt. var. arenicola (Britton) G. Mulligan & D. Munro Native STPIA

  hairy hedgenettle · Lamiaceae 16 counties
• 
  Stachys pilosa Nutt. var. pilosa Native STPIP5

  hairy hedgenettle · Lamiaceae 6 counties
• 
  Stachys tenuifolia Willd. Native STTE

  smooth hedgenettle · Lamiaceae 59 counties
• 
  Staphylea trifolia L. Native STTR

  American bladdernut · Staphyleaceae 35 counties
• 
  Stellaria borealis Bigelow Native STBO3

  boreal starwort · Caryophyllaceae 13 counties
• 
  Stellaria borealis Bigelow ssp. borealis Native STBOB

  boreal starwort · Caryophyllaceae 13 counties