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 2,651–2,700 of 3,277.

• 
  Scirpus polyphyllus Vahl Native SCPO2

  leafy bulrush · Cyperaceae 1 county
• 
  Scleranthus annuus L. Introduced SCAN2

  German knotgrass · Caryophyllaceae 9 counties
• 
  Scleria ciliata Michx. Native SCCI

  fringed nutrush · Cyperaceae 7 counties
• 
  Scleria ciliata Michx. var. ciliata Native SCCIC

  fringed nutrush · Cyperaceae 7 counties
• 
  Scleria oligantha Michx. Native SCOL2

  littlehead nutrush · Cyperaceae 22 counties
• 
  Scleria pauciflora Muhl. ex Willd. Native SCPA5

  fewflower nutrush · Cyperaceae 5 counties
• 
  Scleria reticularis Michx. Native SCRE

  netted nutrush · Cyperaceae 2 counties
• 
  Scleria triglomerata Michx. Native SCTR

  whip nutrush · Cyperaceae 11 counties
• 
  Scleria verticillata Muhl. ex Willd. Native SCVE2

  low nutrush · Cyperaceae 2 counties
• 
  Sclerochloa dura (L.) P. Beauv. Introduced SCDU2

  common hardgrass · Poaceae 1 county
• 
  Scrophularia marilandica L. Native SCMA2

  carpenter's square · Scrophulariaceae 32 counties
• 
  Scutellaria bushii Britton Native SCBU

  Bush's skullcap · Lamiaceae 2 counties
• 
  Scutellaria cardiophylla Engelm. & A. Gray Native SCCA4

  gulf skullcap · Lamiaceae 4 counties
• 
  Scutellaria elliptica Muhl. ex Spreng. Native SCEL

  hairy skullcap · Lamiaceae 21 counties
• 
  Scutellaria elliptica Muhl. ex Spreng. var. elliptica Native SCELE

  hairy skullcap · Lamiaceae 21 counties
• 
  Scutellaria incana Biehler Native SCIN

  hoary skullcap · Lamiaceae 9 counties
• 
  Scutellaria incana Biehler var. incana Native SCINI2

  hoary skullcap · Lamiaceae 9 counties
• 
  Scutellaria integrifolia L. Native SCIN2

  helmet flower · Lamiaceae 20 counties
• 
  Scutellaria lateriflora L. Native SCLA2

  blue skullcap · Lamiaceae 25 counties
• 
  Scutellaria lateriflora L. var. lateriflora Native SCLAL2

  blue skullcap · Lamiaceae 25 counties
• 
  Scutellaria ovata Hill Native SCOV

  heartleaf skullcap · Lamiaceae 38 counties
• 
  Scutellaria parvula Michx. Native SCPA7

  small skullcap · Lamiaceae 39 counties
• 
  Scutellaria parvula Michx. var. australis Fassett Native SCPAA2

  small skullcap · Lamiaceae 37 counties
• 
  Scutellaria parvula Michx. var. missouriensis (Torr.) Goodman & C.A. Lawson Native SCPAM

  Leonard's skullcap · Lamiaceae 3 counties
• 
  Scutellaria parvula Michx. var. parvula Native SCPAP3

  small skullcap · Lamiaceae 7 counties
• 
  Secale cereale L. Introduced SECE

  cereal rye · Poaceae 1 county
• 
  Securigera varia (L.) Lassen Introduced SEVA4

  crownvetch · Fabaceae 15 counties
• 
  Sedum nuttallianum Raf. Native SENU

  yellow stonecrop · Crassulaceae 9 counties
• 
  Sedum pulchellum Michx. Native SEPU

  widowscross · Crassulaceae 19 counties
• 
  Sedum sarmentosum Bunge Introduced SESA

  stringy stonecrop · Crassulaceae 6 counties
• 
  Sedum ternatum Michx. Native SETE3

  woodland stonecrop · Crassulaceae 8 counties
• 
  Selaginella apoda (L.) Spring Native SEAP

  meadow spikemoss · Selaginellaceae 28 counties
• 
  Selaginella arenicola Underw. Native SEAR

  sand spikemoss · Selaginellaceae 5 counties
• 
  Selaginella arenicola Underw. ssp. riddellii (Van Eselt.) R. Tryon Native SEARR

  Riddell's spikemoss · Selaginellaceae 5 counties
• 
  Selaginella eclipes W.R. Buck Native SEEC

  hidden spikemoss · Selaginellaceae 11 counties
• 
  Selaginella rupestris (L.) Spring Native SERU

  northern selaginella · Selaginellaceae 12 counties
• 
  Selenia aurea Nutt. Native SEAU

  golden selenia · Brassicaceae 23 counties
• 
  Senecio vulgaris L. Introduced SEVU

  old-man-in-the-Spring · Asteraceae 3 counties
• 
  Senna alata (L.) Roxb. Introduced SEAL4

  emperor's candlesticks · Fabaceae 1 county
• 
  Senna marilandica (L.) Link Native SEMA11

  Maryland senna · Fabaceae 42 counties
• 
  Senna obtusifolia (L.) Irwin & Barneby Native SEOB4

  Java-bean · Fabaceae 29 counties
• 
  Senna occidentalis (L.) Link Introduced SEOC2

  septicweed · Fabaceae 7 counties
• 
  Senna tora (L.) Roxb. Introduced SETO4

  sickle senna · Fabaceae 1 county
• 
  Sesbania drummondii (Rydb.) Cory Native SEDR

  poisonbean · Fabaceae 4 counties
• 
  Sesbania herbacea (Mill.) McVaugh Native SEHE8

  bigpod sesbania · Fabaceae 34 counties
• 
  Sesbania punicea (Cav.) Benth. Introduced SEPU7

  rattlebox · Fabaceae 4 counties
• 
  Sesbania vesicaria (Jacq.) Elliott Native SEVE

  bagpod · Fabaceae 18 counties
• 
  Setaria faberi Herrm. Introduced SEFA

  Japanese bristlegrass · Poaceae 7 counties
• 
  Setaria italica (L.) P. Beauv. Introduced SEIT

  foxtail millet · Poaceae 1 county
• 
  Setaria magna Griseb. Native SEMA6

  giant bristlegrass · Poaceae 3 counties