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 295077) with original publication details: Intermountain Fl. 6: 515 1977.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:8685-2.
This name was in version 1 of The Plant List, record kew-295077, and has not been changed.