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2,321 species in Wrangell-St. Elias National Park
Schistidium frigidum
Schistidium papillosum
Schistidium pulchrum
Schistochilopsis opacifolia
Schljakovia kunzeana
Schljakovianthus quadrilobus
Scopula cajanderi
Scorpidium cossonii
Scorpidium revolvens
Scytinium tenuissimum
Sebastes variegatus
Sepedon fuscipennis
Silene menziesii
Silene williamsii
Siliqua alta
Sinum scopulosum
Sisymbrium altissimum
Solariella obscura
Solidago stricta
Solorina octospora
Sonchus arvensis
Sophronia gelidella
Sorbus scopulina
Sorex obscurus
Sphacelaria racemosa
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