This name is a synonym of Mimosa bimucronata (DC.) Kuntze.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13063980) with original publication details: Repert. Spec. Nov. Regni Veg. 9(196–198): 2 1910.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:161535-2.
This name was in version 1 of The Plant List, record tro-13063980.