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1,791 species in Theodore Roosevelt National Park
Pellaea glabella
Penthimia americana
Perillus bioculatus
Perispasta caeculalis
Persicaria amphibia
Phaeorrhiza nimbosa
Phalangium opilio
Phallus hadriani
Phanacis taraxaci
Phidippus cryptus
Phidippus insignarius
Philolithus sordidus
Phleum pratense
Phosphila miselioides
Phragmatobia assimilans
Phragmatobia fuliginosa
Phragmites australis
Phrurotimpus borealis
Phyciodes batesii
Phyllophaga lanceolata
Physaria reediana
Physarum cinereum
Physarum notabile
Physarum spectabile
Physcia subtilis
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