Mississippi

• Adams 28001
  382 taxa Open ↗
• Alcorn 28003
  268 taxa Open ↗
• Amite 28005
  586 taxa Open ↗
• Attala 28007
  321 taxa Open ↗
• Benton 28009
  327 taxa Open ↗
• Bolivar 28011
  295 taxa Open ↗
• Calhoun 28013
  294 taxa Open ↗
• Carroll 28015
  347 taxa Open ↗
• Chickasaw 28017
  375 taxa Open ↗
• Choctaw 28019
  524 taxa Open ↗

Showing 3,001–3,050 of 3,476.

• 
  Sparganium americanum Nutt. Native SPAM

  American bur-reed · Sparganiaceae 11 counties
• 
  Spartina alterniflora Loisel. Native SPAL

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

  big cordgrass · Poaceae 3 counties
• 
  Spartina patens (Aiton) Muhl. Native SPPA

  saltmeadow cordgrass · Poaceae 3 counties
• 
  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae 1 county
• 
  Spartina spartinae (Trin.) Merr. ex Hitchc. Native SPSP

  gulf cordgrass · Poaceae 3 counties
• 
  Spergula arvensis L. Introduced SPAR

  corn spurry · Caryophyllaceae 1 county
• 
  Spermacoce glabra Michx. Native SPGL2

  smooth false buttonweed · Rubiaceae 21 counties
• 
  Spermolepis divaricata (Walter) Raf. ex Ser. Native SPDI2

  roughfruit scaleseed · Apiaceae 7 counties
• 
  Spermolepis echinata (Nutt. ex DC.) A. Heller Native SPEC2

  bristly scaleseed · Apiaceae 9 counties
• 
  Spermolepis inermis (Nutt. ex DC.) Mathias & Constance Native SPIN

  Red River scaleseed · Apiaceae 2 counties
• 
  Sphenoclea zeylanica Gaertn. Introduced SPZE

  chickenspike · Sphenocleaceae 17 counties
• 
  Sphenopholis filiformis (Chapm.) Scribn. Native SPFI

  longleaf wedgescale · Poaceae 13 counties
• 
  Sphenopholis intermedia (Rydb.) Rydb. Native SPIN3

  slender wedgescale · Poaceae 6 counties
• 
  Sphenopholis nitida (Biehler) Scribn. Native SPNI

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

  prairie wedgescale · Poaceae 25 counties
• 
  Sphenopholis pensylvanica (L.) Hitchc. Native SPPE3

  swamp wedgescale · Poaceae 3 counties
• ⚘
  Sphenopholis ×pallens (Biehler) Scribn. (pro sp.) [obtusata × pensylvanica] Native SPPA7

  wedgescale · Poaceae 2 counties
• 
  Spigelia marilandica (L.) L. Native SPMA3

  woodland pinkroot · Loganiaceae 45 counties
• 
  Spiraea prunifolia Siebold & Zucc. Introduced SPPR

  bridalwreath spirea · Rosaceae 2 counties
• 
  Spiraea thunbergii Siebold ex Blume Introduced SPTH2

  Thunberg's meadowsweet · Rosaceae 3 counties
• 
  Spiraea tomentosa L. Native SPTO2

  steeplebush · Rosaceae 1 county
• ⚘
  Spiraea ×vanhouttei (Briot) Carrière [cantoniensis × trilobata] Introduced SPVA2

  spirea · Rosaceae 1 county
• 
  Spiranthes brevilabris Lindl. Native SPBR

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

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

  northern slender lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes laciniata (Small) Ames Native SPLA3

  lacelip lady's tresses · Orchidaceae 1 county
• 
  Spiranthes longilabris Lindl. Native SPLO2

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

  Great Plains lady's tresses · Orchidaceae 8 counties
• 
  Spiranthes odorata (Nutt.) Lindl. Native SPOD

  marsh lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes ovalis Lindl. Native SPOV

  October lady's tresses · Orchidaceae 13 counties
• 
  Spiranthes praecox (Walter) S. Watson Native SPPR2

  greenvein lady's tresses · Orchidaceae 13 counties
• 
  Spiranthes tuberosa Raf. Native SPTU

  little lady's tresses · Orchidaceae 17 counties
• 
  Spiranthes vernalis Engelm. & A. Gray Native SPVE

  spring lady's tresses · Orchidaceae 30 counties
• 
  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae 9 counties
• 
  Sporobolus clandestinus (Biehler) Hitchc. Native SPCL

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

  composite dropseed · Poaceae 10 counties
• 
  Sporobolus compositus (Poir.) Merr. var. compositus Native SPCOC2

  composite dropseed · Poaceae 3 counties
• 
  Sporobolus compositus (Poir.) Merr. var. drummondii (Trin.) Kartesz & Gandhi Native SPCOD3

  Drummond's dropseed · Poaceae 2 counties
• 
  Sporobolus compositus (Poir.) Merr. var. macer (Trin.) Kartesz & Gandhi Native SPCOM

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

  sand dropseed · Poaceae 1 county
• 
  Sporobolus indicus (L.) R. Br. Introduced SPIN4

  smut grass · Poaceae 19 counties
• 
  Sporobolus indicus (L.) R. Br. var. indicus Introduced SPINI2

  smut grass · Poaceae 19 counties
• 
  Sporobolus junceus (P. Beauv.) Kunth Native SPJU

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

  poverty dropseed · Poaceae 3 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 3 counties
• 
  Sporobolus virginicus (L.) Kunth Native SPVI3

  seashore dropseed · Poaceae 2 counties