Alabama

• Autauga 01001
  646 taxa Open ↗
• Baldwin 01003
  1,339 taxa Open ↗
• Barbour 01005
  390 taxa Open ↗
• Bibb 01007
  807 taxa Open ↗
• Blount 01009
  305 taxa Open ↗
• Bullock 01011
  262 taxa Open ↗
• Butler 01013
  347 taxa Open ↗
• Calhoun 01015
  525 taxa Open ↗
• Chambers 01017
  265 taxa Open ↗
• Cherokee 01019
  402 taxa Open ↗

Showing 3,401–3,450 of 3,934.

• 
  Sonchus tenerrimus L. Introduced SOTE3

  slender sowthistle · Asteraceae 1 county
• 
  Sorghastrum elliottii (C. Mohr) Nash Native SOEL3

  slender Indiangrass · Poaceae 4 counties
• 
  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae 18 counties
• 
  Sorghastrum secundum (Elliott) Nash Native SOSE5

  lopsided Indiangrass · Poaceae 9 counties
• 
  Sorghum bicolor (L.) Moench Introduced SOBI2

  sorghum · Poaceae 2 counties
• 
  Sorghum halepense (L.) Pers. Introduced SOHA

  Johnsongrass · Poaceae 36 counties
• 
  Sparganium americanum Nutt. Native SPAM

  American bur-reed · Sparganiaceae 34 counties
• 
  Spartina alterniflora Loisel. Native SPAL

  smooth cordgrass · Poaceae 3 counties
• 
  Spartina cynosuroides (L.) Roth Native SPCY

  big cordgrass · Poaceae 2 counties
• 
  Spartina patens (Aiton) Muhl. Native SPPA

  saltmeadow cordgrass · Poaceae 4 counties
• 
  Spartina spartinae (Trin.) Merr. ex Hitchc. Native SPSP

  gulf cordgrass · Poaceae 4 counties
• 
  Spergula arvensis L. Introduced SPAR

  corn spurry · Caryophyllaceae 2 counties
• 
  Spermacoce assurgens Ruiz & Pav. Native SPAS2

  woodland false buttonweed · Rubiaceae 2 counties
• 
  Spermacoce densiflora (DC.) Alain Native SPDE3

  bouquet false buttonweed · Rubiaceae 1 county
• 
  Spermacoce glabra Michx. Native SPGL2

  smooth false buttonweed · Rubiaceae 3 counties
• 
  Spermolepis divaricata (Walter) Raf. ex Ser. Native SPDI2

  roughfruit scaleseed · Apiaceae 12 counties
• 
  Spermolepis echinata (Nutt. ex DC.) A. Heller Native SPEC2

  bristly scaleseed · Apiaceae 3 counties
• 
  Sphagneticola trilobata (L.) Pruski Introduced SPTR6

  Bay Biscayne creeping-oxeye · Asteraceae 1 county
• 
  Sphenoclea zeylanica Gaertn. Introduced SPZE

  chickenspike · Sphenocleaceae 10 counties
• 
  Sphenopholis filiformis (Chapm.) Scribn. Native SPFI

  longleaf wedgescale · Poaceae 5 counties
• 
  Sphenopholis intermedia (Rydb.) Rydb. Native SPIN3

  slender wedgescale · Poaceae 5 counties
• 
  Sphenopholis nitida (Biehler) Scribn. Native SPNI

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

  prairie wedgescale · Poaceae 22 counties
• 
  Sphenopholis pensylvanica (L.) Hitchc. Native SPPE3

  swamp wedgescale · Poaceae 2 counties
• 
  Spigelia alabamensis (K. Gould) K.G. Mathews & Weakley Native SPAL6

  purpleflower pinkroot · Loganiaceae 1 county
• 
  Spigelia gentianoides Chapm. ex A. DC. Native SPGE

  purpleflower pinkroot · Loganiaceae 1 county
• 
  Spigelia gentianoides Chapm. ex A. DC. var. gentianoides Native SPGEG

  purpleflower pinkroot · Loganiaceae 1 county
• 
  Spigelia marilandica (L.) L. Native SPMA3

  woodland pinkroot · Loganiaceae 22 counties
• 
  Spiraea cantoniensis Lour. Introduced SPCA10

  Reeves' meadowsweet · Rosaceae 1 county
• 
  Spiraea prunifolia Siebold & Zucc. Introduced SPPR

  bridalwreath spirea · Rosaceae 1 county
• 
  Spiraea thunbergii Siebold ex Blume Introduced SPTH2

  Thunberg's meadowsweet · Rosaceae 5 counties
• 
  Spiranthes brevilabris Lindl. Native SPBR

  Texas lady's tresses · Orchidaceae 1 county
• 
  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae 9 counties
• 
  Spiranthes eatonii Ames ex P.M. Brown Native SPEA

  Eaton's lady's tresses · Orchidaceae 1 county
• ⚘
  Spiranthes floridana (Wherry) Cory Native SPFL10

  Florida lady's tresses · Orchidaceae 3 counties
• 
  Spiranthes lacera (Raf.) Raf. Native SPLA4

  northern slender lady's tresses · Orchidaceae 7 counties
• 
  Spiranthes lacera (Raf.) Raf. var. gracilis (Bigelow) Luer Native SPLAG

  northern slender lady's tresses · Orchidaceae 7 counties
• 
  Spiranthes laciniata (Small) Ames Native SPLA3

  lacelip lady's tresses · Orchidaceae 2 counties
• 
  Spiranthes longilabris Lindl. Native SPLO2

  giantspiral lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes lucida (H.H. Eaton) Ames Native SPLU2

  shining lady's tresses · Orchidaceae 1 county
• 
  Spiranthes magnicamporum Sheviak Native SPMA5

  Great Plains lady's tresses · Orchidaceae 6 counties
• 
  Spiranthes odorata (Nutt.) Lindl. Native SPOD

  marsh lady's tresses · Orchidaceae 2 counties
• 
  Spiranthes ovalis Lindl. Native SPOV

  October lady's tresses · Orchidaceae 1 county
• 
  Spiranthes praecox (Walter) S. Watson Native SPPR2

  greenvein lady's tresses · Orchidaceae 20 counties
• 
  Spiranthes tuberosa Raf. Native SPTU

  little lady's tresses · Orchidaceae 10 counties
• 
  Spiranthes vernalis Engelm. & A. Gray Native SPVE

  spring lady's tresses · Orchidaceae 17 counties
• 
  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae 23 counties
• 
  Sporobolus clandestinus (Biehler) Hitchc. Native SPCL

  rough dropseed · Poaceae 6 counties
• 
  Sporobolus compositus (Poir.) Merr. Native SPCO16

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

  composite dropseed · Poaceae 2 counties