This name is a synonym of Hesperolinon spergulinum (A. Gray) Small.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 18700196) with original publication details: Proc. Amer. Acad. Arts 7(2): 333 1868.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:544709-1.
This name was in version 1 of The Plant List, record tro-18700196, and has not been changed.