This name is a synonym of Frangula rubra subsp. obtusissima (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: Rancho Santa Ana Bot. Gard. Monogr., Bot. Ser. 1: 88 1938.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:219063-2.
This name was in version 1 of The Plant List, record kew-2528984, and has not been changed.