Asteraceae Dumort nos campos rupestres do Parque Estadual do Itacolomi, Minas Gerais, Brasil: Barnadesieae e Mutisieae

The study of the tribes Barnadesieae and Mutisieae is part of the floristic inventory of Asteraceae species in the rocky fields (campos rupestres) of the Parque Estadual do Itacolomi (PEI) in Minas Gerais. The collections were carried out between in the period from August 2005 to August 2007. For the two tribes this study identified 21 species belonging to six generas: Dasyphyllum Kunth with four species and one variety; Chaptalia Vent. (four species), Gochnatia Kunth. (three species), Mutisia L.f. (one species), Richterago Kuntze (six species) and Trixis P. Br. (three species). Most of these species are restricted to the rocky fields of the Espinhaco Range or vegetated areas near the transition, being four endemic of the Minas Gerais states. Keys for the identification of genera and species, descriptions, taxonomic commentaries, information about the geographical distributions of species and illustrations are presented.