This name is a synonym of Planchonella costata (Endl.) Pierre.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 164027) with original publication details: Candollea 9: 304 1942.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:788885-1.
This name was in version 1 of The Plant List, record kew-164027, and has not been changed.