This name is a synonym of Rhododendron huguangense P.C. Tam.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060695) with original publication details: Survey Rhodod. South China 76, f. 12 1983.
This name was in version 1 of The Plant List, record tro-50060695, and has not been changed.