This name is a synonym of Berberis flexuosa Ruiz & Pav..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Syst. Nat. 2: 11 1821.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:107145-1.
This name was in version 1 of The Plant List, record kew-2674538, and has not been changed.