This name is a synonym of Dissocarpus biflorus var. cephalocarpus (F.Muell.) A.J.Scott.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Proc. Linn. Soc. New South Wales 48: 349 1923.
This name was in version 1 of The Plant List, record kew-2670743.