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1,640 species in Bryce Canyon National Park
Streptanthus cordatus
Streptanthus longirostris
Streptopelia roseogrisea
Strix occidentalis
Suillus lakei
Swertia paniculata
Sympetrum corruptum
Synchlora bistriaria
Syntrichia caninervis
Syrphus ribesii
Tachysphex aethiops
Tachysphex psammobius
Tadarida brasiliensis
Taraxacum officinale
Tetradymia filifolia
Tharsalea heteronea
Thelesperma megapotamicum
Thlaspi arvense
Tortula inermis
Toxicoscordion venenosum
Toxostoma curvirostre
Toxostoma rufum
Triepeolus eldoradensis
Triepeolus grindeliae
Triepeolus helianthi
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