This name is a synonym of Rhododendron mariesii Hemsl. & E.H. Wilson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50002919) with original publication details: Icon. Pl. Formosan. 3: 132–133 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:332509-1.
This name was in version 1 of The Plant List, record tro-50002919, and has not been changed.