This name is a synonym of Allium costatovaginatum Kamelin & Levichev.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 296461) with original publication details: Dokl. Akad. Nauk Tadzhiksk. S.S.R. 29: 180 1986.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:931364-1.
This name was in version 1 of The Plant List, record kew-296461, and has not been changed.