This name is a synonym of Cypripedium acaule Aiton.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 332305) with original publication details: Fl. Mt. Desert Isl. 154 1894.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:75334-2.
This name was in version 1 of The Plant List, record kew-332305.