This name is a synonym of Desmodium painteri (Rose & J.H.Painter) Standl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13010951) with original publication details: Repert. Spec. Nov. Regni Veg. 20: 282 1924.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:169580-2.
This name was in version 1 of The Plant List, record tro-13010951, and has not been changed.