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6,550 species in Shenandoah National Park
Scutigera coleoptrata
Setaria viridis
Solanum sarrachoides
Solidago roanensis
Stereocaulon saxatile
Sticta weigelii
Stigmatomma pallipes
Strauzia intermedia
Striatura meridionalis
Suillus americanus
Sweltsa palearata
Symphyotrichum puniceum
Tabanus sparus
Taxodium distichum
Temnostoma alternans
Theatops posticus
Tipula longiventris
Trapeliopsis granulosa
Tremex columba
Trichopoda pennipes
Trifolium aureum
Trissopelopia ogemawi
Urnula craterium
Urocyon cinereoargenteus
Uvularia sessilifolia
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