This name is a synonym of Aristida glabrata (Vasey) Hitchc..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394454) with original publication details: Proc. Calif. Acad. Sci. II, 3: 178 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:19161-2.
This name was in version 1 of The Plant List, record kew-394454, and has not been changed.