This name is a synonym of Draba cuneifolia var. sonorae (Greene) Parish.
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. 2(5): 63 1886.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:283073-1.
This name was in version 1 of The Plant List, record kew-2777365.