This name is a synonym of Dendrobium jonesii var. magnificum (Dockrill) Dockrill.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 58094) with original publication details: Austral. Orchid Res. 1: 54 1989.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:956012-1.
This name was in version 1 of The Plant List, record kew-58094, and has not been changed.