This name is a synonym of Allium longispathum F.Delaroche.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 294961) with original publication details: Fl. Centre France ed. 3, 2: 631 1857.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:527571-1.
This name was in version 1 of The Plant List, record kew-294961.