This name is a synonym of Landolphia uniflora (Stapf) Pichon.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1805228) with original publication details: Bull. Misc. Inform. Kew 1894(1): 94 1894.
This name was in version 1 of The Plant List, record tro-1805228, and has not been changed.