Arkansas

• Arkansas 05001
  816 taxa Open ↗
• Ashley 05003
  1,236 taxa Open ↗
• Baxter 05005
  1,025 taxa Open ↗
• Benton 05007
  1,372 taxa Open ↗
• Boone 05009
  697 taxa Open ↗
• Bradley 05011
  1,145 taxa Open ↗
• Calhoun 05013
  573 taxa Open ↗
• Carroll 05015
  1,039 taxa Open ↗
• Chicot 05017
  440 taxa Open ↗
• Clark 05019
  896 taxa Open ↗

Showing 2,851–2,900 of 3,277.

• 
  Spiranthes lacera (Raf.) Raf. Native SPLA4

  northern slender lady's tresses · Orchidaceae 19 counties
• 
  Spiranthes lacera (Raf.) Raf. var. gracilis (Bigelow) Luer Native SPLAG

  northern slender lady's tresses · Orchidaceae 19 counties
• 
  Spiranthes laciniata (Small) Ames Native SPLA3

  lacelip lady's tresses · Orchidaceae 2 counties
• 
  Spiranthes lucida (H.H. Eaton) Ames Native SPLU2

  shining lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes odorata (Nutt.) Lindl. Native SPOD

  marsh lady's tresses · Orchidaceae 1 county
• 
  Spiranthes ovalis Lindl. Native SPOV

  October lady's tresses · Orchidaceae 6 counties
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  Spiranthes ovalis Lindl. var. erostellata Catling Native SPOVE

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

  October lady's tresses · Orchidaceae 4 counties
• 
  Spiranthes praecox (Walter) S. Watson Native SPPR2

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

  little lady's tresses · Orchidaceae 27 counties
• 
  Spiranthes vernalis Engelm. & A. Gray Native SPVE

  spring lady's tresses · Orchidaceae 29 counties
• 
  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae 15 counties
• 
  Sporobolus clandestinus (Biehler) Hitchc. Native SPCL

  rough dropseed · Poaceae 34 counties
• 
  Sporobolus compositus (Poir.) Merr. Native SPCO16

  composite dropseed · Poaceae 14 counties
• 
  Sporobolus compositus (Poir.) Merr. var. compositus Native SPCOC2

  composite dropseed · Poaceae 8 counties
• 
  Sporobolus compositus (Poir.) Merr. var. drummondii (Trin.) Kartesz & Gandhi Native SPCOD3

  Drummond's dropseed · Poaceae 3 counties
• 
  Sporobolus compositus (Poir.) Merr. var. macer (Trin.) Kartesz & Gandhi Native SPCOM

  composite dropseed · Poaceae 5 counties
• 
  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae 9 counties
• 
  Sporobolus heterolepis (A. Gray) A. Gray Native SPHE

  prairie dropseed · Poaceae 4 counties
• 
  Sporobolus indicus (L.) R. Br. Introduced SPIN4

  smut grass · Poaceae 20 counties
• 
  Sporobolus indicus (L.) R. Br. var. indicus Introduced SPINI2

  smut grass · Poaceae 20 counties
• 
  Sporobolus junceus (P. Beauv.) Kunth Native SPJU

  pineywoods dropseed · Poaceae 2 counties
• 
  Sporobolus neglectus Nash Native SPNE2

  puffsheath dropseed · Poaceae 4 counties
• 
  Sporobolus pyramidatus (Lam.) Hitchc. Native SPPY2

  Madagascar dropseed · Poaceae 1 county
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood Native SPVA

  poverty dropseed · Poaceae 27 counties
• 
  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood var. vaginiflorus Native SPVAV2

  poverty dropseed · Poaceae 27 counties
• 
  Stachys crenata Raf. Native STCR7

  mousesear · Lamiaceae 1 county
• 
  Stachys eplingii J.B. Nelson Native STEP

  Epling's hedgenettle · Lamiaceae 5 counties
• 
  Stachys floridana Shuttlw. ex Benth. Native STFL4

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

  smooth hedgenettle · Lamiaceae 29 counties
• 
  Staphylea trifolia L. Native STTR

  American bladdernut · Staphyleaceae 45 counties
• 
  Steinchisma hians (Elliott) Nash Native STHI3

  gaping grass · Poaceae 33 counties
• 
  Stellaria media (L.) Vill. Introduced STME2

  common chickweed · Caryophyllaceae 52 counties
• 
  Stellaria media (L.) Vill. ssp. media Introduced STMEM

  common chickweed · Caryophyllaceae 1 county
• 
  Stenanthium gramineum (Ker Gawl.) Morong Native STGR2

  eastern featherbells · Liliaceae 7 counties
• 
  Stenanthium gramineum (Ker Gawl.) Morong var. gramineum Native STGRG2

  eastern featherbells · Liliaceae 5 counties
• 
  Stenanthium gramineum (Ker Gawl.) Morong var. robustum (S. Watson) Fernald Native STGRR

  eastern featherbells · Liliaceae 2 counties
• 
  Stenaria nigricans (Lam.) Terrell Native STNI6

  diamond-flowers · Rubiaceae 31 counties
• 
  Stenaria nigricans (Lam.) Terrell var. nigricans Native STNIN

  diamondflowers · Rubiaceae 31 counties
• 
  Stenosiphon linifolius (Nutt. ex James) Heynh. Native STLI2

  false gaura · Onagraceae 3 counties
• 
  Stenotaphrum secundatum (Walter) Kuntze Native STSE

  St. Augustine grass · Poaceae 1 county
• 
  Stewartia malacodendron L. Native STMA

  silky camellia · Theaceae 1 county
• 
  Stillingia sylvatica L. Native STSY

  queen's-delight · Euphorbiaceae 8 counties
• 
  Stillingia sylvatica L. ssp. sylvatica Native STSYS2

  queen's-delight · Euphorbiaceae 8 counties
• 
  Stokesia laevis (Hill) Greene Native STLA6

  Stokes' aster · Asteraceae 1 county
• 
  Streptanthus hyacinthoides Hook. Native STHY

  smooth jewelflower · Brassicaceae 3 counties
• 
  Streptanthus maculatus Nutt. Native STMA2

  clasping jewelflower · Brassicaceae 8 counties
• 
  Streptanthus maculatus Nutt. ssp. obtusifolius (Hook.) Rollins Native STMAO

  clasping jewelflower · Brassicaceae 8 counties
• 
  Streptanthus squamiformis Goodman Native STSQ

  pineoak jewelflower · Brassicaceae 3 counties
• 
  Strophostyles helvola (L.) Elliott Native STHE9

  amberique-bean · Fabaceae 38 counties