This name is a synonym of Antirrhinum majus subsp. tortuosum (Bosc ex Vent.) Rouy.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Naturalista Sicil. 2: 297 1883.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:799051-1.
This name was in version 1 of The Plant List, record kew-2642543.