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Cypripedium passerinum Richardson
in J. Franklin, Narrative of a Journey to the Shores of the Polar Sea, Append. quarto ed. 2: 762 (1823).
Synonyms :
Cypripedium passerinum var. minganense Marie-Victorin in Proceedings and Transactions of the Royal Society of Canada, series 3, 22(5): 168, tab. 1-3 (1929).

P.J. Cribb (1997) says about var. minganense: "Examination of the type of var. minganense suggests that it represents a dwarf ecotype; it does not differ otherwise from the typical variety."
Type(s) : Canada, Richardson (Holotype: BM!, Iso.: AMES!, K!).
Description
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