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1,032 species in Great Sand Dunes National Park
Sciurus aberti
Valeriana arizonica
Senecio bigelovii
Senecio triangularis
Sergiolus montanus
Setagrotis vocalis
Setophaga nigrescens
Shepherdia canadensis
Shinnersoseris rostrata
Sideridis maryx
Silybum marianum
Smerinthus cerisyi
Solanum triflorum
Solidago missouriensis
Solidago multiradiata
Spea bombifrons
Sphaerophysa salsula
Sphenophorus cicatristriatus
Sphinx chersis
Sphinx dollii
Sphyrapicus varius
Spilogale gracilis
Sporobolus contractus
Stachys pilosa
Steatoda mexicana
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