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1,997 species in Glacier Bay National Park
Pugettia gracilis
Pulsatilla nuttalliana
Puncturella cooperi
Puncturella cucullata
Puncturella multistriata
Puncturella noachina
Pyropia abbottiae
Pyrrhulomyces astragalinus
Racomitrium affine
Racomitrium heterostichum
Racomitrium ryszardii
Radula bolanderi
Ramalina roesleri
Ramaria divaricata
Ramaria testaceoflava
Ramularia pratensis
Ramularia taraxaci
Ramularia ulmariae
Ranunculus circinatus
Ranunculus repens
Rhagio dimidiatus
Rhinanthus groenlandicus
Rhinolithodes wosnessenskii
Rhizoclonium tortuosum
Rhizomnium pseudopunctatum
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