This name is a synonym of Allium trifoliatum Cirillo.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 295655) with original publication details: Mém. Soc. Linn. Paris 1: 293 1822.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:528112-1.
This name was in version 1 of The Plant List, record kew-295655, and has not been changed.