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3,381 species in Gros Morne National Park
Potamogeton confervoides
Potamogeton natans
Potamogeton perfoliatus
Pristiphora cincta
Prociphilus xylostei
Procladius denticulatus
Profenusa thomsoni
Protapanteles alaskensis
Prothalpia undata
Pseudeva purpurigera
Pseudobourletiella spinata
Pseudocoenosia solitaria
Pseudopachychaeta ruficeps
Pterocallis alnifoliae
Ptilostomis semifasciata
Ptychostomum pseudotriquetrum
Puccinia linkii
Pullimosina pullula
Pupilla muscorum
Pycnothelia papillaria
Pyla fusca
Racomitrium canescens
Radula complanata
Ranunculus abortivus
Ranunculus macounii
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