This name is a synonym of Markhamia zanzibarica (Bojer ex DC.) K.Schum..
The record derives from iPlants
(data supplied on 2012-03-23)
which reports it as a synonym (record 318205) with original publication details: Prodr. 9: 208 1845.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:110734-1.
This name was in version 1 of The Plant List, record kew-318205.