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1,573 species in Crater Lake National Park
Potentilla norvegica
Pristiloma arcticum
Progne subis
Proserpinus clarkiae
Pseudephebe pubescens
Pseudognaphalium microcephalum
Puccinia bistortae
Puccinia monoica
Pyrola minor
Ramboldia elabens
Rhizoplaca melanophthalma
Ribes inerme
Carex fracta
Roellia roellii
Salix prolixa
Sambucus cerulea
Scapania subalpina
Sceloporus occidentalis
Schinia vacciniae
Carex heteroneura
Carex hoodii
Carex jonesii
Sorbus aucuparia
Sorbus sitchensis
Sphecomyia oraria
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