This name is a synonym of Matthiola longipetala subsp. bicornis (Sm.) P.W.Ball.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Syst. Nat. 2: 177 1821.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:286863-1.
This name was in version 1 of The Plant List, record kew-2359168.