Sheridan County

Showing 601–650 of 680.

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  Solidago mollis Bartlett var. mollis Native SOMOM

  velvety goldenrod · Asteraceae
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  Solidago speciosa Nutt. Native SOSP2

  showy goldenrod · Asteraceae
• 
  Sonchus arvensis L. Introduced SOAR2

  field sowthistle · Asteraceae
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  Sonchus arvensis L. ssp. uliginosus (M. Bieb.) Nyman Introduced SOARU

  moist sowthistle · Asteraceae
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  Sophora nuttalliana B.L. Turner Native SONU

  silky sophora · Fabaceae
• 
  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae
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  Sparganium eurycarpum Engelm. Native SPEU

  broadfruit bur-reed · Sparganiaceae
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  Spartina gracilis Trin. Native SPGR

  alkali cordgrass · Poaceae
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  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae
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  Sphaeralcea coccinea (Nutt.) Rydb. Native SPCO

  scarlet globemallow · Malvaceae
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  Sphaeralcea coccinea (Nutt.) Rydb. ssp. coccinea Native SPCOC

  scarlet globemallow · Malvaceae
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  Sphenopholis obtusata (Michx.) Scribn. Native SPOB

  prairie wedgescale · Poaceae
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  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae
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  Spirodela polyrrhiza (L.) Schleid. Native SPPO

  common duckmeat · Lemnaceae
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  Sporobolus airoides (Torr.) Torr. Native SPAI

  alkali sacaton · Poaceae
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  Sporobolus compositus (Poir.) Merr. Native SPCO16

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

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

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

  prairie dropseed · Poaceae
• 
  Stanleya pinnata (Pursh) Britton Native STPI

  desert princesplume · Brassicaceae
• 
  Stanleya pinnata (Pursh) Britton var. pinnata Native STPIP

  desert princesplume · Brassicaceae
• 
  Strophostyles leiosperma (Torr. & A. Gray) Piper Native STLE6

  slickseed fuzzybean · Fabaceae
• 
  Stuckenia pectinata (L.) Börner Native STPE15

  sago pondweed · Potamogetonaceae
• 
  Symphoricarpos occidentalis Hook. Native SYOC

  western snowberry · Caprifoliaceae
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  Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

  white heath aster · Asteraceae
• 
  Symphyotrichum ericoides (L.) G.L. Nesom var. ericoides Native SYERE

  white heath aster · Asteraceae
• 
  Symphyotrichum oblongifolium (Nutt.) G.L. Nesom Native SYOB

  aromatic aster · Asteraceae
• 
  Taraxacum officinale F.H. Wigg. Both TAOF

  common dandelion · Asteraceae
• 
  Taraxacum officinale F.H. Wigg. ssp. officinale Introduced TAOFO

  common dandelion · Asteraceae
• 
  Teucrium canadense L. Native TECA3

  Canada germander · Lamiaceae
• 
  Teucrium canadense L. var. occidentale (A. Gray) E.M. McClint. & Epling Native TECAO

  western germander · Lamiaceae
• 
  Thalictrum dasycarpum Fisch. & Avé-Lall. Native THDA

  purple meadow-rue · Ranunculaceae
• 
  Thelesperma filifolium (Hook.) A. Gray Native THFI

  stiff greenthread · Asteraceae
• 
  Thelesperma filifolium (Hook.) A. Gray var. intermedium (Rydb.) Shinners Native THFII

  stiff greenthread · Asteraceae
• 
  Thelesperma megapotamicum (Spreng.) Kuntze Native THME

  Hopi tea greenthread · Asteraceae
• 
  Thelypodium integrifolium (Nutt.) Endl. ex Walp. Native THIN

  entireleaved thelypody · Brassicaceae
• 
  Thelypodium integrifolium (Nutt.) Endl. ex Walp. ssp. integrifolium Native THINI

  entireleaved thelypody · Brassicaceae
• 
  Thelypteris palustris Schott Native THPA

  eastern marsh fern · Thelypteridaceae
• 
  Thelypteris palustris Schott var. pubescens (G. Lawson) Fernald Native THPAP

  eastern marsh fern · Thelypteridaceae
• 
  Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richardson Native THRH

  prairie thermopsis · Fabaceae
• 
  Thinopyrum ponticum (Podp.) Z.-W. Liu & R.-C. Wang Introduced THPO7

  tall wheatgrass · Poaceae
• 
  Townsendia exscapa (Richardson) Porter Native TOEX2

  stemless Townsend daisy · Asteraceae
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  Tradescantia bracteata Small Native TRBR

  longbract spiderwort · Commelinaceae
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  Tradescantia occidentalis (Britton) Smyth Native TROC

  prairie spiderwort · Commelinaceae
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  Tradescantia occidentalis (Britton) Smyth var. occidentalis Native TROCO

  prairie spiderwort · Commelinaceae
• 
  Tragopogon dubius Scop. Introduced TRDU

  yellow salsify · Asteraceae
• 
  Tragopogon porrifolius L. Introduced TRPO

  salsify · Asteraceae
• 
  Tribulus terrestris L. Introduced TRTE

  puncturevine · Zygophyllaceae
• 
  Trifolium pratense L. Introduced TRPR2

  red clover · Fabaceae
• 
  Triglochin maritima L. Native TRMA20

  seaside arrowgrass · Juncaginaceae