This name is a synonym of Chylismia cardiophylla subsp. cedrosensis (Greene) 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: Bull. Calif. Acad. Sci. 1: 187 1885.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:172860-2.
This name was in version 1 of The Plant List, record kew-2399115, and has not been changed.