This name is a synonym of Acacia karroo var. transvaalensis (Burtt Davy) Burtt Davy.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13074495) with original publication details: Bull. Misc. Inform. Kew 1908: 158 1908.
This name was in version 1 of The Plant List, record tro-13074495, and has not been changed.