This name is a synonym of Epipactis palustris (L.) Crantz.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 190656) with original publication details: Syn. Stirp. Arag. 131 1779.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:657651-1.
This name was in version 1 of The Plant List, record kew-190656.