This name is a synonym of Dichrostachys cinerea var. setulosa (Welw. ex Oliv.) Brenan & Brummitt.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100323152) with original publication details: Fl. Trop. Afr. 2: 333 1871.
This name was in version 1 of The Plant List, record tro-100323152, and has not been changed.