This name is a synonym of Aethionema saxatile subsp. athoum (Griseb.) Hayek.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Diagn. Pl. Orient. II, 6: 20 1859.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:277160-1.
This name was in version 1 of The Plant List, record kew-2624653, and has not been changed.