This name is a synonym of Stipagrostis hirtigluma var. pearsonii (Henrard) De Winter.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 394688) with original publication details: Meded. Rijks-Herb. 54B: 695 1928.
This name was in version 1 of The Plant List, record kew-394688, and has not been changed.