1. Orchid of boggy or wet lands of north central United States having racemes of very fragrant creamy or greenish white flowers
   - prairie orchid, Habenaria leucophaea

Type of: fringed orchid, fringed orchis

• genus Pyrocephalus
• genus Pyrola
• genus Pyrophorus
• genus Pyrrhula
• genus Pyrrhuloxia
• genus Pyrrosia
• genus Pyrularia
• genus Pyrus
• genus Pythium
• genus Python
• genus Pyxidanthera
• genus Quamassia
• genus Quassia
• genus Quercus
• genus Quiscalus
• genus Rachycentron
• genus Radiigera
• genus Radyera
• genus Raffia
• genus Raja
• genus Ramalina
• genus Ramphomicron
• genus Rana
• genus Ranatra
• genus Rangifer