This name is a synonym of Rhododendron russatum Balf. f. & Forrest.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 12304019) with original publication details: Bot. Mag. 148: , pl. 8963 1923.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:332107-1.
This name was in version 1 of The Plant List, record tro-12304019, and has not been changed.