This name is a synonym of Allium maximowiczii Regel.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 295999) with original publication details: New Alp. Fl. Japan Colour 2: 358 1983.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:921727-1.
This name was in version 1 of The Plant List, record kew-295999, and has not been changed.