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2,321 species in Wrangell-St. Elias National Park
Sphagnum fuscum
Sphagnum magellanicum
Sphagnum russowii
Spiraea stevenii
Squamarina lentigera
Stellaria crispa
Stereocaulon botryosum
Stereocaulon grande
Stereocaulon rivulorum
Sticta arctica
Streptopelia decaocto
Stylaria lacustris
Subularia aquatica
Syngrapha parilis
Syrphus ribesii
Tachinus frigidus
Tanacetum vulgare
Taraxacum hyparcticum
Taraxacum lacerum
Tenthredo olivacea
Tenthredo ungava
Tetramelas papillatus
Thuidium recognitum
Titanoeca nivalis
Tortula cernua
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