This name is a synonym of Aristida appressa Vasey.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 395042) with original publication details: Proc. Amer. Acad. Arts 49: 500 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:19302-2.
This name was in version 1 of The Plant List, record kew-395042, and has not been changed.