This name is a synonym of Aristida longiseta Steud..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 394937) with original publication details: Fl. Amer. Sept. 2: 728 1813.
This name was in version 1 of The Plant List, record kew-394937.