This name is a synonym of Rhododendron tsoi Merr..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50068277) with original publication details: Survey Gen. Rhododendron 108, pl. 29 1983.
This name was in version 1 of The Plant List, record tro-50068277, and has not been changed.