This name is a synonym of Soyauxia gabonensis Oliv..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 20200001) with original publication details: Fl. W. Trop. Afr. 1(1): 170 1927.
This name was in version 1 of The Plant List, record tro-20200001, and has not been changed.