This name is a synonym of Arctotis argentea Thunb..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A2F63AF6-E71A-4A39-BE1A-5C927D4A688A) with original publication details: 28 1768.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190706-1.
This name was in version 1 of The Plant List, record gcc-49935, and has not been changed.