This name is a synonym of Cyrtanthus mackenii var. cooperi (Baker) R.A.Dyer.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 372322) with original publication details: Bothalia 37: 5 2007.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:77086484-1.
This name was in version 1 of The Plant List, record kew-372322, and has not been changed.