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2,243 species in Mammoth Cave National Park
Paspalum dilatatum
Pectinatella magnifica
Peltigera evansiana
Penstemon tenuiflorus
Percina evides
Peridea basitriens
Persicaria lapathifolia
Pertusaria plittiana
Phaeophyscia insignis
Phanetta subterranea
Phaseolus polystachios
Phengodes laticollis
Phigalia titea
Physalis heterophylla
Pieris rapae
Pinus strobus
Plantago rugelii
Pleurobema clava
Pluchea camphorata
Polyporus umbellatus
Pomatiopsis lapidaria
Pomoxis annularis
Porcellio scaber
Proceratium silaceum
Procyon lotor
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