This name is a synonym of Miscanthus ecklonii (Nees) Mabb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 413650) with original publication details: Fl. Afr. Austral. Ill. 93 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:401888-1.
This name was in version 1 of The Plant List, record kew-413650.