This name is a synonym of Sporobolus tenuissimus (Schrank.) Kuntze.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 389933) with original publication details: Nomencl. Bot. ed. 2, 1: 41 1840.
This name was in version 1 of The Plant List, record kew-389933.