This name is a synonym of Allium canadense var. lavandulare (Bates) Ownbey & Aase.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 274763) with original publication details: Pl. Life 23: 110 1967.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:8714-2.
This name was in version 1 of The Plant List, record kew-274763.