This name is a synonym of Allium × proliferum (Moench) Schrad. ex Willd..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 295571) with original publication details: Pl. Basho's & Buson's Hokku Lit. 8(1): 257 1971.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:886135-1.
This name was in version 1 of The Plant List, record kew-295571.