This name is a synonym of Prestonia speciosa Donn.Sm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 165347) with original publication details: Fieldiana, Bot. 31: 402 1968.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:210105-2.
This name was in version 1 of The Plant List, record kew-165347, and has not been changed.