This name is a synonym of Braya humilis (C.A. Mey.) B.L. Rob..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50202943) with original publication details: Revis. Gen. Pl. 2: 935 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:285151-1.
This name was in version 1 of The Plant List, record tro-50202943.