This name is a synonym of Aristida flaccida Trin. & Rupr..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394635) with original publication details: Fl. Bras. 2(3): 13 1878.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:19196-2.
This name was in version 1 of The Plant List, record kew-394635.