This name is a synonym of Cypripedium candidum Muhl. ex Willd..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 30556) with original publication details: Amer. Midl. Naturalist 3: 117 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:41816-2.
This name was in version 1 of The Plant List, record kew-30556, and has not been changed.