This name is a synonym of Allium sphaerocephalon subsp. arvense (Guss.) Arcang..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 296945) with original publication details: Cat. Pl. Hort. Panorm. 275 1827.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:529122-1.
This name was in version 1 of The Plant List, record kew-296945, and has not been changed.