The teams of Escola de Florestas de Curitiba (EFC) and Museu Botânico Municipal (MBM) herbaria, Curitiba, Brazil, made field expeditions between the years 2017 and 2019 to increase the knowledge of the flora of Paraná state, southern Brazil. Four new records of tree species are reported: Cinnamodendron occhionianum F.Barros & J.Salazar (Canellaceae), Cryptocarya botelhensis P.L.R.Moraes (Lauraceae), Henriettea glabra (Vell.) Penneys, Michelang., Judd et Almeda (Melastomataceae) and Virola gardneri (A.DC.) Warb. (Myristicaceae). The genus Henriettea is recorded from the state of Paraná for the first time. All four species occur in the Atlantic Rainforest of Brazil.