This name is a synonym of Allium dilatatum Zahar..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 295682) with original publication details: Rev. Allium sect. Allium 136 1996.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:986685-1.
This name was in version 1 of The Plant List, record kew-295682, and has not been changed.