This name is a synonym of Aristida jubata (Arechav.) Herter.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394941) with original publication details: Anales Mus. Nac. Montevideo 4(1): 74 1902.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:19279-2.
This name was in version 1 of The Plant List, record kew-394941, and has not been changed.