This name is a synonym of Rhododendron insigne var. hejiangense (W.P. Fang) M.Y. Fang.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50001531) with original publication details: Acta Phytotax. Sin. 21(4): 457, pl. 1 1983.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:917982-1.
This name was in version 1 of The Plant List, record tro-50001531, and has not been changed.