This name is a synonym of Aristida ekmaniana Henrard.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 395279) with original publication details: Meded. Rijks-Herb. 54B: 638 1928.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:19371-2.
This name was in version 1 of The Plant List, record kew-395279, and has not been changed.