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2,243 species in Mammoth Cave National Park
Tetracha virginica
Tetraneura akinire
Tetrix ornata
Thamnobryum alleghaniense
Thelephora anthocephala
Thelephora vialis
Theliderma cylindrica
Thereuonema tuberculata
Tiarella cordifolia
Tigrosa aspersa
Toxomerus marginatus
Tramea carolina
Tramea lacerata
Trametes betulina
Trametes gibbosa
Trapelia placodioides
Trichodesma klagesi
Tricholomopsis decora
Trillium erectum
Triodanis biflora
Triodopsis tridentata
Triphora trianthophoros
Tripsacum dactyloides
Troglodytes troglodytes
Tropisternus lateralis
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