This name is a synonym of Schinus longifolia var. paraguariensis (Hassl.) F.A. Barkley.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1300774) with original publication details: Repert. Spec. Nov. Regni Veg. 12: 373 1913.
This name was in version 1 of The Plant List, record tro-1300774, and has not been changed.