Novidade taxonômica e tipificações em Stenodon (Microlicieae, Melastomataceae)

Abstract

The genus Stenodon, considered endemic of Goiás and Distrito Federal, is represented by Stenodon suberosus Naudin and Stenodon gracilis Berg. ex. Triana. Since the Flora Brasiliensis, where there are descriptions of the two species, just few works are approaching the genus, thus lacking morphological characteristics circumscribe the species, the occurrence, and conservation data. The present study aimed a comprehensive taxonomic treatment of the genus Stenodon. The morphological characters present a gradient of variation in the two existing binomials, with no support for the recognition of two distinct species. Stenodon suberosus is here recognized and Stenodon gracilis considered synonymous. Among the collections examined was also found a new species, described here as Stenodon sp. nov. The present study provides identification keys for both species, detailed descriptions, flowering and fruiting data, taxonomic comments, occurrence and conservation data, images of the diagnostic characters, and photographs in the field for the species and a list of all material examined.