West Virginia

• Barbour 54001
  829 taxa Open ↗
• Berkeley 54003
  705 taxa Open ↗
• Boone 54005
  327 taxa Open ↗
• Braxton 54007
  709 taxa Open ↗
• Brooke 54009
  578 taxa Open ↗
• Cabell 54011
  647 taxa Open ↗
• Calhoun 54013
  739 taxa Open ↗
• Clay 54015
  284 taxa Open ↗
• Doddridge 54017
  349 taxa Open ↗
• Fayette 54019
  1,478 taxa Open ↗

Showing 2,451–2,500 of 2,838.

• 
  Sonchus arvensis L. ssp. uliginosus (M. Bieb.) Nyman Introduced SOARU

  moist sowthistle · Asteraceae 13 counties
• 
  Sonchus asper (L.) Hill Introduced SOAS

  spiny sowthistle · Asteraceae 25 counties
• 
  Sonchus oleraceus L. Introduced SOOL

  common sowthistle · Asteraceae 17 counties
• 
  Sorbus americana Marshall Native SOAM3

  American mountain ash · Rosaceae 11 counties
• 
  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae 26 counties
• 
  Sorghum halepense (L.) Pers. Introduced SOHA

  Johnsongrass · Poaceae 19 counties
• 
  Sparganium americanum Nutt. Native SPAM

  American bur-reed · Sparganiaceae 24 counties
• 
  Sparganium androcladum (Engelm.) Morong Native SPAN

  branched bur-reed · Sparganiaceae 7 counties
• 
  Sparganium erectum L. Introduced SPER

  simplestem bur-reed · Sparganiaceae 11 counties
• 
  Sparganium erectum L. ssp. stoloniferum (Graebn.) H. Hara Introduced SPERS2

  simplestem bur-reed · Sparganiaceae 11 counties
• 
  Sparganium eurycarpum Engelm. Native SPEU

  broadfruit bur-reed · Sparganiaceae 6 counties
• 
  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae 18 counties
• 
  Spergula arvensis L. Introduced SPAR

  corn spurry · Caryophyllaceae 8 counties
• 
  Sphenopholis intermedia (Rydb.) Rydb. Native SPIN3

  slender wedgescale · Poaceae 18 counties
• 
  Sphenopholis nitida (Biehler) Scribn. Native SPNI

  shiny wedgescale · Poaceae 16 counties
• 
  Sphenopholis obtusata (Michx.) Scribn. Native SPOB

  prairie wedgescale · Poaceae 5 counties
• 
  Sphenopholis pensylvanica (L.) Hitchc. Native SPPE3

  swamp wedgescale · Poaceae 6 counties
• 
  Spiraea alba Du Roi Native SPAL2

  white meadowsweet · Rosaceae 23 counties
• 
  Spiraea alba Du Roi var. alba Native SPALA

  white meadowsweet · Rosaceae 20 counties
• 
  Spiraea alba Du Roi var. latifolia (Aiton) Dippel Native SPALL

  white meadowsweet · Rosaceae 7 counties
• 
  Spiraea corymbosa Raf. Native SPCO12

  shinyleaf meadowsweet · Rosaceae 5 counties
• 
  Spiraea japonica L. f. Introduced SPJA

  Japanese meadowsweet · Rosaceae 11 counties
• 
  Spiraea japonica L. f. var. fortunei (Planch.) Rehder Introduced SPJAF

  fortune meadowsweet · Rosaceae 11 counties
• 
  Spiraea tomentosa L. Native SPTO2

  steeplebush · Rosaceae 18 counties
• 
  Spiraea virginiana Britton Native SPVI2

  Virginia meadowsweet · Rosaceae 7 counties
• ⚘
  Spiraea ×vanhouttei (Briot) Carrière [cantoniensis × trilobata] Introduced SPVA2

  spirea · Rosaceae 5 counties
• 
  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae 26 counties
• 
  Spiranthes lacera (Raf.) Raf. Native SPLA4

  northern slender lady's tresses · Orchidaceae 28 counties
• 
  Spiranthes lacera (Raf.) Raf. var. gracilis (Bigelow) Luer Native SPLAG

  northern slender lady's tresses · Orchidaceae 28 counties
• 
  Spiranthes ochroleuca (Rydb.) Rydb. Native SPOC

  yellow nodding lady's tresses · Orchidaceae 3 counties
• 
  Spiranthes ovalis Lindl. Native SPOV

  October lady's tresses · Orchidaceae 2 counties
• 
  Spiranthes ovalis Lindl. var. erostellata Catling Native SPOVE

  October lady's tresses · Orchidaceae 2 counties
• 
  Spiranthes tuberosa Raf. Native SPTU

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

  common duckmeat · Lemnaceae 5 counties
• 
  Sporobolus clandestinus (Biehler) Hitchc. Native SPCL

  rough dropseed · Poaceae 1 county
• 
  Sporobolus compositus (Poir.) Merr. Native SPCO16

  composite dropseed · Poaceae 2 counties
• 
  Sporobolus compositus (Poir.) Merr. var. compositus Native SPCOC2

  composite dropseed · Poaceae 2 counties
• 
  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae 1 county
• 
  Sporobolus neglectus Nash Native SPNE2

  puffsheath dropseed · Poaceae 2 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood Native SPVA

  poverty dropseed · Poaceae 12 counties
• 
  Stachys cordata Riddell Native STCO9

  heartleaf hedgenettle · Lamiaceae 3 counties
• 
  Stachys eplingii J.B. Nelson Native STEP

  Epling's hedgenettle · Lamiaceae 1 county
• 
  Stachys germanica L. Introduced STGE

  German hedgenettle · Lamiaceae 2 counties
• 
  Stachys latidens Small ex Britton Native STLA5

  broadtooth hedgenettle · Lamiaceae 4 counties
• 
  Stachys tenuifolia Willd. Native STTE

  smooth hedgenettle · Lamiaceae 7 counties
• 
  Staphylea trifolia L. Native STTR

  American bladdernut · Staphyleaceae 36 counties
• 
  Stellaria borealis Bigelow Native STBO3

  boreal starwort · Caryophyllaceae 1 county
• 
  Stellaria borealis Bigelow ssp. borealis Native STBOB

  boreal starwort · Caryophyllaceae 1 county
• 
  Stellaria corei Shinners Native STCO7

  Tennessee starwort · Caryophyllaceae 7 counties
• 
  Stellaria graminea L. Introduced STGR

  grass-like starwort · Caryophyllaceae 28 counties