The Serra da Canastra National Park is in southwestern Minas Gerais (20º00'-20º30'S and 46º15'-47º00'W) about 40% of its area covered by "campos rupestres". Forty-one species of Papilionoideae, grouped into 23 genera and eight tribes, were found. Phaseoleae (Camptosema, Centrosema, Clitoria, Collaea, Eriosema, Erythrina, Galactia, Periandra and Vigna), Dalbergieae (Andira, Dalbergia, Machaerium, Platypodium, Poiretia, Stylosanthes and Zornia), Sophoreae (Acosmium and Bowdichia), Crotalarieae (Crotalaria), Desmodieae (Desmodium), Genisteae (Lupinus), Millettieae (Platycyamus) and Swartzieae (Swartzia). The most numerous genera were Galactia (five species), Andira, Eriosema, Vigna and Zornia, with three species each one. Centrosema, Collaea, Crotalaria, Lupinus, Periandra and Stylosanthes were represented by two species, and the other genera were represented by a single species. The geographical distribution of Eriosema prorepens Benth., Lupinus subsessilis Benth. and Periandra gracilis H.S. Irwin & Arroyo was extended in this work. Identification keys, descriptions and data on geographical distribution of the species and infra-specific taxa are provided.
"campos rupestres"; "cerrado"; flora
