This name is a synonym of Chascanum namaquanum (Bolus ex H.Pearson) Moldenke.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 23541) with original publication details: Fl. Cap. 5: 204 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:861198-1.
This name was in version 1 of The Plant List, record kew-23541, and has not been changed.