A fragment of Semideciduous Submontane Forest, located in Viçosa-MG (20º35' to 28º50'S and 42º45' to 43º00'W), was studied. The data presented are the result of a phytosociological analysis carried out in an area of an hectare square. All trees wich a minimum trunk circunference of 0.15 m at 1.30 m from the soil level were sampled, comprising 121 species of 89 genera, distributed over 39 families. In regards to genera, the families most represented were Leguminosae (16), Rubiaceae, (six) and Euphorbiaceae and Myrtaceae, each with five genera. In regards to number of species, the most represented were Leguminosae (20), Lauraceae (ten), Rubiaceae (nine) and Flacourtiaceae (eight). The genera Ocotea and Casearia were the most prominent, showing seven and five species, respectively. Among the several stretches studied in the same region, the one presently studied had the largest number of especies, when the same sample criterion was adopted.
Semideciduous submontane forest; floristic composition; arboreal flora; Zona da Mata; Minas Gerais
