The study of the family Polygonaceae is a part of the project "Study of the flora and fauna of the Espinhaço Range region, Bahia, Brazil". In this paper we are including the species of the Espinhaço Range of Minas Gerais State. In that area the family is represented by the following genera, with respective number of species: Coccoloba (14): C. acrostichoides, C. alagoensis, C. alnifolia, C. brasiliensis, C. cereifera, C. fastigiata, C. lucidula, C. ochreolata, C. pipericarpa, C. salicifolia, C. scandens, C. schwackeana, C. striata and C. warmingii, Polygonum (6): P. acuminatum, P. ferrugineum, P. hispidum, P. hydropiperoides, P. meisnerianum and P. punctatum, Rumex (1): R. crispus, Ruprechtia (1): R. apetala and Triplaris (1): T. gardneriana. Key to the genera and species, descriptions and illustrations, as well as comments on the geographic distribution, phenology and variability of the species are presented.
Polygonaceae; floristic; Espinhaço range; Campo rupestre; Bahia; Minas Gerais
