This name is a synonym of Cypripedium montanum Douglas ex Lindl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 54255) with original publication details: N. Amer. Native Orchid J. 1: 198 1995.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:985007-1.
This name was in version 1 of The Plant List, record kew-54255, and has not been changed.