This name is a synonym of Rhododendron westlandii Hemsl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060691) with original publication details: Guihaia 3(3): 193, f. 5 1983.
This name was in version 1 of The Plant List, record tro-50060691, and has not been changed.