This name is a synonym of Prestonia quinquangularis (Jacq.) Spreng..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 66122) with original publication details: Enum. Syst. Pl. 13 1760.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:78725-1.
This name was in version 1 of The Plant List, record kew-66122, and has not been changed.