This name is a synonym of Allium neapolitanum Cirillo.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 296705) with original publication details: Enum. Pl. 4: 441 1843.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:528946-1.
This name was in version 1 of The Plant List, record kew-296705.