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1,573 species in Crater Lake National Park
Phlox speciosa
Pholiota aurivella
Pholiota highlandensis
Phrynosoma douglasii
Physocephala texana
Pieris rapae
Pisaster ochraceus
Pituophis catenifer
Plagiobothrys hispidus
Plagiothecium laetum
Plantago lanceolata
Platanthera limosa
Platismatia herrei
Platismatia norvegica
Plebejus argyrognomon
Pleopsidium flavum
Poa bolanderi
Poa iconia
Podalonia communis
Pohlia annotina
Pohlia cruda
Pohlia drummondii
Pohlia filum
Polia piniae
Polygonia satyrus
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