This name is a synonym of Descurainia cumingiana (Fisch. & C.A.Mey.) Prantl.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50096275).
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1069326-2.
This name was in version 1 of The Plant List, record tro-50096275.