York County

Showing 1,351–1,400 of 1,545.

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  Spiraea tomentosa L. Native SPTO2

  steeplebush · Rosaceae
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  Spiranthes cernua (L.) Rich. Native SPCE

  nodding lady's tresses · Orchidaceae
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  Spiranthes lucida (H.H. Eaton) Ames Native SPLU2

  shining lady's tresses · Orchidaceae
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  Spiranthes romanzoffiana Cham. Native SPRO

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

  common duckmeat · Lemnaceae
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  Sporobolus cryptandrus (Torr.) A. Gray Native SPCR

  sand dropseed · Poaceae
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  Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood Native SPVA

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

  poverty dropseed · Poaceae
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  Stellaria alsine Grimm Native STAL4

  bog chickweed · Caryophyllaceae
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  Stellaria graminea L. Introduced STGR

  grass-like starwort · Caryophyllaceae
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  Stellaria longifolia Muhl. ex Willd. Native STLO

  longleaf starwort · Caryophyllaceae
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  Stellaria longifolia Muhl. ex Willd. var. longifolia Native STLOL

  longleaf starwort · Caryophyllaceae
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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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  Streptopus amplexifolius (L.) DC. Both STAM2

  claspleaf twistedstalk · Liliaceae
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  Streptopus amplexifolius (L.) DC. var. amplexifolius Native STAMA2

  claspleaf twistedstalk · Liliaceae
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  Streptopus lanceolatus (Aiton) Reveal Native STLA16

  twistedstalk · Liliaceae
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  Streptopus lanceolatus (Aiton) Reveal var. lanceolatus Native STLAL2

  twistedstalk · Liliaceae
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  Strophostyles helvola (L.) Elliott Native STHE9

  amberique-bean · Fabaceae
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  Stuckenia pectinata (L.) Börner Native STPE15

  sago pondweed · Potamogetonaceae
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  Suaeda linearis (Elliott) Moq. Native SULI

  annual seepweed · Chenopodiaceae
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  Suaeda maritima (L.) Dumort. Both SUMA

  herbaceous seepweed · Chenopodiaceae
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  Suaeda maritima (L.) Dumort. ssp. richii (Fernald) Bassett & C.W. Crompton Native SUMAR

  Rich's seepweed · Chenopodiaceae
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  Subularia aquatica L. Native SUAQ

  waterawlwort · Brassicaceae
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  Subularia aquatica L. var. americana (G. Mulligan & Calder) B. Boivin Native SUAQA2

  American waterawlwort · Brassicaceae
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  Symphoricarpos albus (L.) S.F. Blake Native SYAL

  common snowberry · Caprifoliaceae
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  Symphoricarpos albus (L.) S.F. Blake var. laevigatus (Fernald) S.F. Blake Native SYALL

  common snowberry · Caprifoliaceae
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  Symphyotrichum ciliatum (Ledeb.) G.L. Nesom Native SYCI2

  rayless alkali aster · Asteraceae
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  Symphyotrichum dumosum (L.) G.L. Nesom Native SYDU2

  rice button aster · Asteraceae
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  Symphyotrichum dumosum (L.) G.L. Nesom var. dumosum Native SYDUD2

  rice button aster · Asteraceae
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  Symphyotrichum ericoides (L.) G.L. Nesom Native SYER

  white heath aster · Asteraceae
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  Symphyotrichum laeve (L.) Á. Löve & D. Löve Native SYLA3

  smooth blue aster · Asteraceae
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  Symphyotrichum laeve (L.) Á. Löve & D. Löve var. laeve Native SYLAL3

  smooth blue 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 lateriflorum (L.) Á. Löve & D. Löve Native SYLA4

  calico aster · Asteraceae
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  Symphyotrichum lateriflorum (L.) Á. Löve & D. Löve var. lateriflorum Native SYLAL7

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

  New England aster · Asteraceae
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  Symphyotrichum novi-belgii (L.) G.L. Nesom Native SYNO3

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

  hairy white oldfield aster · Asteraceae
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  Symphyotrichum puniceum (L.) Á. Löve & D. Löve Native SYPU

  purplestem aster · Asteraceae
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  Symphyotrichum puniceum (L.) Á. Löve & D. Löve var. puniceum Native SYPUP

  purplestem aster · Asteraceae
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  Symphyotrichum subulatum (Michx.) G.L. Nesom Native SYSU5

  eastern annual saltmarsh aster · Asteraceae
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  Symphyotrichum undulatum (L.) G.L. Nesom Native SYUN

  wavyleaf aster · Asteraceae
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  Symphytum asperum Lepechin Introduced SYAS

  prickly comfrey · Boraginaceae
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  Symphytum officinale L. Introduced SYOF

  common comfrey · Boraginaceae
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  Symplocarpus foetidus (L.) Salisb. ex W.P.C. Barton Native SYFO

  skunk cabbage · Araceae
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  Tanacetum balsamita L. Introduced TABA

  costmary · Asteraceae
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  Tanacetum parthenium (L.) Sch. Bip. Introduced TAPA6

  feverfew · Asteraceae