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2,312 species in Great Basin National Park
Pyrola asarifolia
Pyrola dentata
Pyrrocoma racemosa
Rafinesquia neomexicana
Ranunculus alismifolius
Ranunculus aquatilis
Reduvius personatus
Rhagium inquisitor
Rhinotropis acanthoclada
Rhizagrotis albalis
Rhizocarpon geographicum
Rhizocarpon macrosporum
Rhizocarpon riparium
Rhizomnium pseudopunctatum
Rhopalapion longirostre
Rhopalomyia chrysothamni
Rhopalomyia pomum
Rhopalomyia utahensis
Rhynocoris ventralis
Ribes inerme
Ribes viscosissimum
Roaldia revoluta
Rubus sachalinensis
Rumex triangulivalvis
Sabulina rubella
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