Cypripedium Linnaeus. Lady's-slipper.
Key to Cypripedium
A genus of about 51 species, north temperate in distribution.
Ref: Case et al. (1998); Correll (1950); Pridgeon et al. (1999c); Sheviak (1994); Sheviak (2002a) In Flora of North America Editorial Committee (2002a); Wallace & Case (2000). Show full citations.
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