This name is a synonym of Pleuropogon hooverianus (L.D.Benson) Howell.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 434969) with original publication details: Amer. J. Bot. 28: 360 1941.
This name was in version 1 of The Plant List, record kew-434969, and has not been changed.