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 295874) with original publication details: Amer. J. Bot. 22: 58 1916.
This name was in version 1 of The Plant List, record kew-295874.