© 2018 Magnolia Press. We present a distribution extension for 12 species of Melastomataceae: all of them consisting in new reports for Peru. These belong to Axinaea (one species), Brachyotum (one species), Meriania (two species), and Miconia (eight species), occurring both in western and eastern-slopes forests, as well as in paramo and jalca. Nine of them have been previously reported as endemics to Ecuador. Only two species occur both north and south of Huancabamba deflection and seven are restricted to the Andes between the Girón-Paute valley in southern Ecuador and north of the Huancabamba deflection—the core of the already identified Huancabamba region.