This name is a synonym of Pentacalia nigrostagnosa (Cuatrec.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 1C039B02-BE80-4F6F-AE12-C9978B65E8CF) with original publication details: 72 1992.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:963596-1.
This name was in version 1 of The Plant List, record gcc-121339, and has not been changed.