Cypripedium acaule Aiton - Pink Lady's Slipper


 

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Cypripedium acaule - (image 1 of 7)

 

Taxonomy

Family: Orchidaceae

Habitat

Prefers acid soil. Habitats include swamps, sphagnum bogs, dry woods and sand dunes.

Associates

 

Distribution

Newfoundland and Quebec west to Alberta, south to NJ and northern IN, south along mountains and the coastal plain to SC and AL.

Morphology

Perennial. Leaves 2, basal, sparsely hairy; no stem leaves. Lip inflated, pink, occasionally white to purplish; petals yellow-green to brownish, lanceolate, the lower 2 sepals united.      

Notes

Flowers late May to June

Wetland indicator: Facultative Wetland

The only pink lady's slipper that lacks cauline (stem) leaves.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.

 


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 Michael Hough 2004