This name is a synonym of Gymnadenia × wettsteiniana O.Abel.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100229256) with original publication details: Syn. Mitteleur. Fl. 3: 811 1907.
This name record (from Tropicos) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Neottia wettsteiniana in version 1 of The Plant List.