This name is a synonym of Desmodium vargasianum B.G.Schub..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13064389) with original publication details: Publ. Field Mus. Nat. Hist., Bot. Ser. 13(3/1): 437 1943.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:78618-2.
This name was in version 1 of The Plant List, record tro-13064389.