This name is a synonym of Protea nitida Mill..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26500492) with original publication details: Nat. Hist. Pl. 4: 107 1775.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:705616-1.
This name was in version 1 of The Plant List, record tro-26500492, and has not been changed.