This name is a synonym of Papualthia grandifolia (Lauterb. & K. Schum.) Diels.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1601817) with original publication details: Fl. Schutzgeb. Südsee 318 1901.
This name was in version 1 of The Plant List, record tro-1601817, and has not been changed.