This name is a synonym of Limonium vulgare subsp. serotinum (Rchb.) Gams.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Giorn. Bot. Ital. 107: 220 1973.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:686972-1.
This name was in version 1 of The Plant List, record kew-2494956.