This name is a synonym of Descurainia athrocarpa (A.Gray) O.E.Schulz.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100358585) with original publication details: Revista Facultad Ci. Nat. Salta 2: 934 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:120832-2.
This name was in version 1 of The Plant List, record tro-100358585.