This name is a synonym of Megastachya mucronata (Poir.) P.Beauv..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 412694) with original publication details: Syn. Pl. Glumac. 1: 269 1854.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:401191-1.
This name was in version 1 of The Plant List, record kew-412694.