This name is a synonym of Chascanum latifolium var. glabrescens (H.Pearson) Moldenke.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 23535) with original publication details: Fl. Cap. 5(1): 203 1901.
This name was in version 1 of The Plant List, record kew-23535, and has not been changed.