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3,140 species in Grand Teton National Park
Scrophularia lanceolata
Scutiger ellisii
Securigera varia
Selenia alciphearia
Senecio amplectens
Senecio crassulus
Setophaga fusca
Setophaga nigrescens
Sialia mexicana
Sidalcea oregana
Sideridis rosea
Silene dichotoma
Silene douglasii
Simulium latipes
Simulium wyomingense
Sium suave
Slaterobius insignis
Solidago gigantea
Solidago lepida
Solidago spathulata
Solidago spectabilis
Somatochlora minor
Somatochlora semicircularis
Sonchus arvensis
Sorbus aucuparia
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