This name is a synonym of Rhododendron kwangtungense Merr. & Chun.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50060802) with original publication details: Med. Mat. Guangdong 4: 34, f. 2 1978.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:896138-1.
This name was in version 1 of The Plant List, record tro-50060802, and has not been changed.