This name is a synonym of Allium guttatum subsp. sardoum (Moris) Stearn.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 342686) with original publication details: Repert. Spec. Nov. Regni Veg. Beih. 30(3): 41 1932.
This name was in version 1 of The Plant List, record kew-342686.