This name is a synonym of Plectranthus xylopodus Lukhoba & A.J.Paton.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 136850) with original publication details: Voy. Abyss. 64 1814.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:452904-1.
This name was in version 1 of The Plant List, record kew-136850.