This name is a synonym of Allium atrorubens var. cristatum (S.Watson) McNeal.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 296098) with original publication details: Res. Stud. State Coll. Wash. 15: 228 1947 publ. 1949.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:8823-2.
This name was in version 1 of The Plant List, record kew-296098, and has not been changed.