This name is a synonym of Hesperolinon breweri (A. Gray) Small.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 18700195) with original publication details: Proc. Calif. Acad. Sci. 3(6): 102 1864.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:544386-1.
This name was in version 1 of The Plant List, record tro-18700195, and has not been changed.