This name is a synonym of Cephalanthera longifolia (L.) Fritsch.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 53451) with original publication details: J. Bot. (Schrader) 2: 226 1799.
This name was in version 1 of The Plant List, record kew-53451.