This name is a synonym of Centranthus macrosiphon Boiss..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Treb. Inst. Catalana Hist. Nat. 1917: 83 1917.
This name was in version 1 of The Plant List, record kew-2709005.