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3,324 species in North Cascades National Park
Paxillus involutus
Pedetontus submutans
Pellaea glabella
Pellia neesiana
Peltigera horizontalis
Peltigera lepidophora
Peltigera malacea
Peltigera neopolydactyla
Peltigera retifoveata
Penstemon attenuatus
Perdix perdix
Perizoma costiguttata
Perizoma curvilinea
Persicaria amphibia
Persicaria hydropiper
Persicaria lapathifolia
Pertusaria carneopallida
Pertusaria sommerfeltii
Pertusaria stenhammarii
Pertusaria subambigens
Phaeogalera stagnina
Phaeorrhiza nimbosa
Phalangium opilio
Phedimus spurius
Phellinidium ferrugineofuscum
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