This name is a synonym of Chenopodium berlandieri var. zschackei (Murr) Murr ex Graebn..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Icon. Fl. Germ. Helv. 24: 102 1907.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60447127-2.
This name was in version 1 of The Plant List, record kew-2606646, and has not been changed.