This name is a synonym of Draba densifolia Nutt..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Amer. J. Bot. 4: 264 1917.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:83711-2.
This name was in version 1 of The Plant List, record kew-2777014, and has not been changed.