This name is a synonym of Allium sanbornii var. congdonii Jeps..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 296490) with original publication details: Pl. Life 28: 66 1972.
This name was in version 1 of The Plant List, record kew-296490, and has not been changed.