This name is a synonym of Draba densifolia var. globosa (Payson) S.L.Welsh.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Univ. Washington Publ. Biol. 11: 72 1941.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:276040-2.
This name was in version 1 of The Plant List, record kew-2776235, and has not been changed.