This name is a synonym of Aristida lanosa Muhl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 394791) with original publication details: Encycl. Suppl. 1: 453 1810.
This name was in version 1 of The Plant List, record kew-394791, and has not been changed.