This name is a synonym of Berberis wilsoniae var. favosa (W.W.Sm.) Ahrendt.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Notes Roy. Bot. Gard. Edinburgh 11: 200 1920.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:106644-1.
This name was in version 1 of The Plant List, record kew-2673768, and has not been changed.