This name is a synonym of Aristida effusa Henrard.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394503) with original publication details: Bot. Jahrb. Syst. 11: 400 1889.
This name was in version 1 of The Plant List, record kew-394503, and has not been changed.