This name is a synonym of Cypripedium macranthos Sw..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 54402) with original publication details: Coll. Orchid. 169 1859.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:625991-1.
This name was in version 1 of The Plant List, record kew-54402.