Melastomateae (Melastomataceae) do Parque Nacional da Serra da Canastra, Minas Gerais, Brasil, com duas novas espécies de Pleroma

Abstract

Melastomateae is a tribe of Melastomataceae composed of 310 species distributed in 16 genera, whose representatives present anther with pedoconnective that is often prolonged, hairy ovary apex, and cochleate to subcochleate seed. In this study, we present the taxonomic treatment of Melastomateae species in the Serra da Canastra National Park located in the southwest portion of Minas Gerais. The tribe is well represented in the area by 24 species distributed in the genera Chaetogastra (3 spp.), Macairea (1 sp.), Pleroma (18 spp.), Pterolepis (1 spp.) and Tibouchina (1 spp.). Here, we provide an identification key to the species, morphological descriptions, taxonomic comments, illustrations, and distribution data. Furthermore, we describe two new species of Pleroma canastrense e P. viscosa endemic to the Serra da Canastra National Park.