This name is a synonym of Rhododendron fulvum subsp. fulvoides (Balf. f. & Forrest) D.F. Chamb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 12304893) with original publication details: Notes Roy. Bot. Gard. Edinburgh 12(57–58): 112–115 1920.
This name was in version 1 of The Plant List, record tro-12304893, and has not been changed.