This name is a synonym of Frangula rubra subsp. yosemitana (C.B.Wolf) 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: Man. Calif. Shrubs 327 1939.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:219067-2.
This name was in version 1 of The Plant List, record kew-2528966, and has not been changed.