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5,782 species in Rocky Mountain National Park
Rosa arkansana
Rufoplaca arenaria
Russula emetica
Sceloporus consobrinus
Schistidium alpicola
Schizocosa saltatrix
Scopula junctaria
Selaginella mutica
Senecio hydrophilus
Siphlonurus occidentalis
Skwala americana
Sorbus aucuparia
Sphagnum contortum
Spharagemon collare
Sporobolus cryptandrus
Steatoda triangulosa
Stomoxys calcitrans
Stropharia hornemannii
Suillus umbonatus
Syrphus opinator
Taraxacum scopulorum
Tetracis fuscata
Thrombium epigaeum
Tibellus maritimus
Tortella tortuosa
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