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1,640 species in Bryce Canyon National Park
Potentilla plattensis
Primula incana
Primula pauciflora
Prochoerodes forficaria
Protosmia rubifloris
Prunus armeniaca
Prunus persica
Psathyrostachys juncea
Pseudohemihyalea ambigua
Pseudomasaris vespoides
Pseudoroegneria spicata
Psoloessa texana
Pterocheilus morrisoni
Puccinellia distans
Puccinia monoica
Pupilla syngenes
Pupoides hordaceus
Pyrausta unifascialis
Pyrola asarifolia
Pyrrocoma lanceolata
Pyrrocoma uniflora
Rafinesquia californica
Rallus limicola
Rallus longirostris
Ranunculus acriformis
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