Washington County

Showing 451–500 of 533.

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  Silene antirrhina L. Native SIAN2

  sleepy silene · Caryophyllaceae
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  Silene stellata (L.) W.T. Aiton Native SIST

  widowsfrill · Caryophyllaceae
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  Silphium integrifolium Michx. Native SIIN2

  wholeleaf rosinweed · Asteraceae
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  Silphium perfoliatum L. Native SIPE2

  cup plant · Asteraceae
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  Silphium perfoliatum L. var. perfoliatum Native SIPEP

  cup plant · Asteraceae
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  Sisyrinchium angustifolium Mill. Native SIAN3

  narrowleaf blue-eyed grass · Iridaceae
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  Sisyrinchium campestre E.P. Bicknell Native SICA9

  prairie blue-eyed grass · Iridaceae
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  Sium suave Walter Native SISU2

  hemlock waterparsnip · Apiaceae
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  Smilax ecirrhata (Engelm. ex Kunth) S. Watson Native SMEC

  upright carrionflower · Smilacaceae
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  Smilax lasioneura Hook. Native SMLA3

  Blue Ridge carrionflower · Smilacaceae
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  Smilax tamnoides L. Native SMTA2

  bristly greenbrier · Smilacaceae
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  Solanum carolinense L. Native SOCA3

  Carolina horsenettle · Solanaceae
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  Solanum carolinense L. var. carolinense Native SOCAC4

  Carolina horsenettle · Solanaceae
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  Solanum ptycanthum Dunal Native SOPT7

  West Indian nightshade · Solanaceae
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  Solanum rostratum Dunal Native SORO

  buffalobur nightshade · Solanaceae
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  Solidago canadensis L. Native SOCA6

  Canada goldenrod · Asteraceae
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  Solidago canadensis L. var. hargeri Fernald Native SOCAH

  Harger's goldenrod · Asteraceae
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  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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  Sorghastrum nutans (L.) Nash Native SONU2

  Indiangrass · Poaceae
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  Spartina pectinata Bosc ex Link Native SPPE

  prairie cordgrass · Poaceae
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  Spiraea alba Du Roi Native SPAL2

  white meadowsweet · Rosaceae
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  Spiraea alba Du Roi var. alba Native SPALA

  white meadowsweet · Rosaceae
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  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae
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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
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  Stachys pilosa Nutt. Native STPI6

  hairy hedgenettle · Lamiaceae
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  Stachys pilosa Nutt. var. pilosa Native STPIP5

  hairy hedgenettle · Lamiaceae
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  Stachys tenuifolia Willd. Native STTE

  smooth hedgenettle · Lamiaceae
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  Stellaria media (L.) Vill. Introduced STME2

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

  common chickweed · Caryophyllaceae
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  Strophostyles helvola (L.) Elliott Native STHE9

  amberique-bean · Fabaceae
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  Symphoricarpos occidentalis Hook. Native SYOC

  western snowberry · Caprifoliaceae
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  Symphoricarpos orbiculatus Moench Native SYOR

  coralberry · Caprifoliaceae
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  Symphyotrichum cordifolium (L.) G.L. Nesom Native SYCO4

  common blue wood aster · Asteraceae
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  Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

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

  white heath aster · Asteraceae
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  Symphyotrichum lanceolatum (Willd.) G.L. Nesom Native SYLA6

  white panicle aster · Asteraceae
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  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum Native SYLAL6

  white panicle aster · Asteraceae
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  Symphyotrichum lanceolatum (Willd.) G.L. Nesom ssp. lanceolatum var. lanceolatum Native SYLAL4

  white panicle aster · Asteraceae
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  Symphyotrichum novae-angliae (L.) G.L. Nesom Native SYNO2

  New England aster · Asteraceae
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  Symphyotrichum ontarionis (Wiegand) G.L. Nesom Native SYON2

  bottomland aster · Asteraceae
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  Symphyotrichum oolentangiense (Riddell) G.L. Nesom Native SYOO

  skyblue aster · Asteraceae
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  Symphyotrichum oolentangiense (Riddell) G.L. Nesom var. oolentangiense Native SYOOO

  skyblue aster · Asteraceae
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  Symphyotrichum pilosum (Willd.) G.L. Nesom Native SYPI2

  hairy white oldfield aster · Asteraceae
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  Symphyotrichum pilosum (Willd.) G.L. Nesom var. pilosum Native SYPIP3

  hairy white oldfield aster · Asteraceae
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  Taraxacum officinale F.H. Wigg. Both TAOF

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

  common dandelion · Asteraceae
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  Teucrium canadense L. Native TECA3

  Canada germander · Lamiaceae