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1,573 species in Crater Lake National Park
Ozomelis trifida
Parnassius smintheus
Phalaropus lobatus
Phalaropus tricolor
Pilophorus acicularis
Poa annua
Poa compressa
Podagrostis humilis
Polygonum cascadense
Polytrichum juniperinum
Populus tremuloides
Prosartes hookeri
Pseudognaphalium thermale
Psora rubiformis
Ranunculus aquatilis
Rhizoplaca chrysoleuca
Rubus leucodermis
Rubus spectabilis
Rumex acetosella
Salix boothii
Salvelinus confluentus
Saxifraga mertensiana
Potentilla norvegica
Achlys californica
Aechmophorus clarkii
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