This name is a synonym of Pennisetum sieberianum (Schltdl.) Stapf & C.E.Hubb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 432539) with original publication details: Ann. Bot. Syst. 6: 692 1865.
This name was in version 1 of The Plant List, record kew-432539.