This name is a synonym of Ancistrorhynchus clandestinus (Lindl.) Schltr..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 9303) with original publication details: Westafr. Kautschuk-Exped. 283 1900.
This name was in version 1 of The Plant List, record kew-9303, and has not been changed.