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Moist wooded areas, dry upland savannas, prairies.
A consistent associate of Cypripedium candidum in low calcareous prairies.
Flowers mid April to mid June
Wetland indicator: Facultative+
Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
Michael Hough © 2005