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 430510) with original publication details: Beskr. Guin. Pl. 59 1827.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:413242-1.
This name was in version 1 of The Plant List, record kew-430510.