This name is a synonym of Plectranthus glabratus (Benth.) Alston.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 46050) with original publication details: Pl. Asiat. Rar. 2: 16 1830.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:446113-1.
This name was in version 1 of The Plant List, record kew-46050, and has not been changed.