This name is a synonym of Acacia caurina Barneby & Zanoni.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50294099) with original publication details: Phytologia 87(3): 148 2005.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60441201-2.
This name was in version 1 of The Plant List, record tro-50294099, and has not been changed.