This name is a synonym of Pappobolus microphyllus (Kunth) Panero.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record E44BAD11-F752-4A9E-800E-18920EED226A) with original publication details: Fl. N. Amer. (Torr. & A. Gray) 2 1842.
This name was in version 1 of The Plant List, record gcc-13192.