This name is a synonym of Plectranthus punctatus subsp. edulis (Vatke) A.J.Paton.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 46138) with original publication details: Tent. Fl. Abyss. 2: 185 1850.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:446199-1.
This name was in version 1 of The Plant List, record kew-46138.