This name is a synonym of Miscanthus ecklonii (Nees) Mabb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25554792) with original publication details: Fl. Cap. 7: 323 1898.
This name was in version 1 of The Plant List, record tro-25554792.