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 (record 45914) with original publication details: Linnaea 37: 319 1872.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:445974-1.
This name was in version 1 of The Plant List, record kew-45914.