This name is a synonym of Pentacalia tunamensis (Cuatrec.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 29E44981-D7BF-4393-A6A3-FF8DF148A609) with original publication details: 73 1992.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:963617-1.
This name was in version 1 of The Plant List, record gcc-145052, and has not been changed.