This name is a synonym of Epipactis gigantea Douglas ex Hook..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 190606) with original publication details: Proc. Biol. Soc. Wash. 21: 67 1908.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:234737-2.
This name was in version 1 of The Plant List, record kew-190606.