1. Orchid of northeastern and alpine eastern North America closely related to the purple fringed orchids but having rosy-purple or violet flowers with denticulate leaf divisions
   - purple fringeless orchid, Habenaria peramoena

Type of: fringed orchid, fringed orchis

• genus Polybotrya
• genus Polycirrus
• genus Polydactylus
• genus Polyergus
• genus Polygala
• genus Polygonatum
• genus Polygonia
• genus Polygonum
• genus Polyodon
• genus Polypedates
• genus Polypodium
• genus Polyporus
• genus Polyprion
• genus Polystichum
• genus Pomacanthus
• genus Pomacentrus
• genus Pomaderris
• genus Pomatomus
• genus Pomolobus
• genus Pomoxis
• genus Poncirus
• genus Pongamia
• genus Pongo
• genus Pontederia
• genus Pooecetes