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4,639 species in Redwood National Park
Pseudochorthippus curtipennis
Pseudosperma sororium
Racomitrium varium
Rhizocarpon lecanorinum
Rhytisma punctatum
Rickenella swartzii
Rubus bifrons
Russula crassotunicata
Sceloporus graciosus
Schistidium rivulare
Scytonotus simplex
Senecio triangularis
Serpula columbiana
Setophaga castanea
Scapanus latimanus
Sitta carolinensis
Sonchus asper
Sphaerobolus stellatus
Spilosoma virginica
Sticta limbata
Symphyotrichum subspicatum
Tauschia kelloggii
Thallophaga hyperborea
Tramea lacerata
Trifolium variegatum
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