This name is a synonym of Rhododendron ovatum (Lindl.) Planch. ex Maxim..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060644) with original publication details: Bull. Bot. Res., Harbin 2(1): 99 1982.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:917253-1.
This name was in version 1 of The Plant List, record tro-50060644.