This name is a synonym of Aristida gibbosa (Nees) Kunth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 404159) with original publication details: Fl. Bras. Enum. Pl. 2: 383 1829.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:395449-1.
This name was in version 1 of The Plant List, record kew-404159.