This name is a synonym of Pentacalia cachacoensis (Cuatrec.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 888F2D6D-BD2A-4AA4-A63F-E51A315A6A2C) with original publication details: 70 1992.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:963573-1.
This name was in version 1 of The Plant List, record gcc-133261, and has not been changed.