Eugenia leucogyna, Myrcia acutisepala and M. pirapama are proposed as new species, described and illustrated; additionally, conservation status is proposed for them. Eugenia leucogyna, from the northern Brazilian state of Pará, is related to E. egensis, but differs by its indumentum; Myrcia acutisepala, from rocky fields from the southeastern state of Minas Gerais, is close to M. eriocalyx, but differs by its glabrous leaves and longer sepals; and M. pirapama, also from rocky fields from Minas Gerais, is related to M. hebepetala, but differs by its leaves with longer petioles and shorter blades and acute and larger sepals.