Seasonal semideciduous forests (FES) assemblage possesses high heterogeneity and diverses factors contributing to floristic and structural variation of these forests. Thus, it was carried throught the study of floristic composition and horizontal and vertical structures in a community of a tree FES. The area is located at coordinates 18º29'28"S and 48º23'45"W. One hectare of area was delimited and was sampled trees with a circunference 1.30 m > 15 cm and estimated the height of individuals. The phytossociological parameters (relatives density, dominance and frequency) had been calculated. The plots were categorized as the percentage of total gaps and species classified on the vertical stratum. The analysis enabled the classification of species into successional groups. There was sampled 839 individuals with predominance of understory late secondary species, with little presence of pioneers. Based on the analysis of the forest of Fazenda da Mata can be classified as a primary stage of conservation.
Communities ecology; successional groups; vertical stratification
