This name is a synonym of Vachellia caven (Molina) Seigler & Ebinger.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50295083) with original publication details: Fl. Bras. 15: 395 1879.
This name was in version 1 of The Plant List, record tro-50295083.