This name is a synonym of Hesperolinon clevelandii (Greene) Small.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50120769) with original publication details: Fl. Calif. 2: 400 1936.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:140812-2.
This name was in version 1 of The Plant List, record tro-50120769, and has not been changed.