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 (record 432880) with original publication details: Index Seminum (B) 1855(App.): 24 1855.
This name was in version 1 of The Plant List, record kew-432880.