This name is a synonym of Cypripedium parviflorum var. pubescens (Willd.) O.W.Knight.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 54313) with original publication details: Our Wild Orchids 8, 11 1929.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:75381-2.
This name was in version 1 of The Plant List, record kew-54313.