The study was carried to evaluate floristic composition and its sociability in a secondary forest of natural regeneration 25 years after a clear cut at Médio Rio Doce region, State of Minas Gerais, Brazil located, at 19°58' latitude South and 42°62' longitude West. The original forest consisted of a high medium forest type with bamboo and grasses predominance. Total 43 tree species were collected and identified with DBH height higher than 5 cm, belonging to 23 families. Families that presented greater number of species were Fabaceae, Lauraceae and Sapotaceae (four species), and followed by Euphorbiaceae, Moraceae and Rutaceae, with three, and for the remaining, 78% families were represented by one specie only. However, the families with greater number of trees were Sapotaceae with 66, Anacardiaceae with 56 and Mimosaceae, with 45. The species with higher importance index value were gonçalo-alves (Astronium fraxinifolium Schott), angico (Pseudopiptadenia contorta (DC.) Lewis & Lima) and garapa (Apuleia leiocarpa (Vog.) Macbr.), with values of 56.80; 24.54 and 23.03, respectively, that represent 34.79% of the species in the area and 37,42% of the total number of trees. The Shannon-Weaver Index for species is (H') =3.09 nats/espécie.
natural regeneration forest; native species; forest
