This name is a synonym of Centranthus calcitrapa (L.) Dufr..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 33500542) with original publication details: Fl. Ross. 2: 436 1844.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:860212-1.
This name was in version 1 of The Plant List, record tro-33500542.