Platanthera purpurascens (Rydb.) Sheviak & W.F.Jenn.

Purple Petal Bog Orchid

Facts About

Accepted Synonyms: Habenaria purpurascens, Limnorchis purpurascens, Platanthera hyperborea var. purpurascens

Platanthera purpurascens, the Purple Petal Bog Orchid, is concentrated in the Rocky Mountains of Colorado and New Mexico, with populations in adjacent states. The common name refers to the purple or reddish highlights often seen on the deep green flowers whose strong, musty smell distinguishes this orchid from the spicy aroma of P. dilatata. The blunt leaves diverge widely from the stem and are a reliable character that aids in identification. This orchid grows in wet areas and shows a wide tolerance of habitats, including seeps, meadows and stream banks.

The conservation status for Platanthera purpurascens has not been reported, but this orchid is widely distributed and grows in diverse habitats.

Ecosystem Type

Disturbed habitats, fens, seeps, shrublands or thickets, stream bank


Leaf arrangement:
  • alternate
  • stem
Number of leaves on stem:
  • three
  • four
  • five
  • six
Form of the labellum:
the labellum is not pouch-like
Labellum outline:
the labellum is simple
Main color of labellum:
green to brown
Nectar spur:
Labellum characteristics:
  • the labellum has a spur
  • the labellum is simple
Labellum length:
4–8 mm
Sepal length:
4–5 mm
Plant height:
24–80 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 N/A
US Status N/A
Canadian Status N/A

North America Distribution

Adapted from USDA data