This name is a synonym of Aristida brevisubulata (Maire) Maire.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394831) with original publication details: Cat. Maroc. 2600 1938.
This name was in version 1 of The Plant List, record kew-394831, and has not been changed.