This name is a synonym of Chylismia specicola subsp. hesperia (P.H.Raven) W.L.Wagner & Hoch.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Univ. Calif. Publ. Bot. 34: 88 1962.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:173419-2.
This name was in version 1 of The Plant List, record kew-2400598, and has not been changed.