Platanthera peramoena A. Gray

Purple Fringeless Orchid

Facts About

Accepted Synonym: Habenaria peramoena

Platanthera peramoena, also called Purple Fringeless Orchid, has a limited distribution in the southeastern and central United States, from Missouri to New Jersey. It produces 2-5 spreading leaves along its stem, and bears an inflorescence of multiple, showy, pink or purple flowers. The labellum is deeply three lobed and usually slightly dentate (not fully fringed), although it is occasionally nearly entire; a prominent notch slits the central lobe of the labellum. It grows in moist forests, woodlands, meadows, and thickets, as well as in marshes and swamps. It appears to benefit from natural disturbances that reduce over head tree canopies and result in more light.

Platanthera peramoena is considered globally secure, although it is rare or vulnerable throughout most of its range. It can be distinguished from P. psycodes and P. grandiflora by its entire (unfringed) labellum.


This orchid is pollinated by Danaus plexippus, Hemaris diffinis, Hemaris thysbe, Papilio glaucus and Papilio troilus. Hemaris thysbe is thought to be a very efficient pollinator as the distance between the compound eyes line up exactly with the distance between the viscidia. Although its proboscis is shorter than the nectar spur, it can still access the nectar and in the process contact the viscidia, remove pollinaria and secure contact between pollinia and the stigma of the subsequent flower visited.

Ecosystem Type

Forests, marshes, meadows, shrublands or thickets, swamps, woodlands


Leaf arrangement:
Number of leaves on stem:
  • two
  • three
  • four
  • five
Form of the labellum:
the labellum is not pouch-like
Labellum outline:
the labellum is lobed
Main color of labellum:
  • blue to purple
  • pink to red
Nectar spur:
Inflorescence type:
the inflorescence is a raceme
Labellum characteristics:
the labellum is lobed
Labellum length:
10–20 mm
Sepal length:
6–10 mm
Plant height:
30–120 cm
Show All Characteristics

Native to North America


North American Conservation Status & Distribution

Conservation Status

Select a location to view conservation status:

Conservation and Wetland Status
Global Rank Secure
US Status N/A
Canadian Status N/A

North America Distribution

Adapted from USDA data