This name is a synonym of Rhododendron discolor Franch..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060096) with original publication details: Pl. Wilson. 1: 541 1913.
This name was in version 1 of The Plant List, record tro-50060096, and has not been changed.