This name is a synonym of Frangula californica subsp. ursina (Greene) Kartesz & Gandhi.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Leafl. Bot. Observ. Crit. 1: 63 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:307307-2.
This name was in version 1 of The Plant List, record kew-2522907, and has not been changed.