This name is a synonym of Pentacalia flosfragrans (Cuatrec.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 5B25E121-434A-4949-A6F9-B20C12C8232B).
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Monticalia flosfragrans in version 1 of The Plant List.