This name is a synonym of Pappobolus acuminatus (S.F.Blake) Panero.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record CCE29E8B-FAF0-4869-A353-EE054372E321) with original publication details: J. Wash. Acad. Sci. 16: 219 219 1926.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:311590-2.
This name was in version 1 of The Plant List, record gcc-137235, and has not been changed.