This name is a synonym of Pennisetum polystachion (L.) Schult..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 432656) with original publication details: Niger Fl. 184 1849.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:414978-1.
This name was in version 1 of The Plant List, record kew-432656.