This name is a synonym of Brevianthus flavus (Grolle) J.J. Engel & R.M. Schust..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35202496) with original publication details: J. Hattori Bot. Lab. 33: 222. f. 1 1970.
This name was in version 1 of The Plant List, record tro-35202496, and has not been changed.