This name is a synonym of Campomanesia guazumifolia (Cambess.) O.Berg.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 22103807) with original publication details: Fl. Bras. Merid. (quarto ed.) 2: 280 1832.
This name record (from Tropicos) 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 Psidium guazumifolia in version 1 of The Plant List.