This name is a synonym of Monanthotaxis buchananii (Engl.) Verdc..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50276347) with original publication details: Monogr. Afrik. Pflanzen-Fam. 6: 47, t. 18/B 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:74786-1.
This name was in version 1 of The Plant List, record tro-50276347.