Composição Florística do Estrato Arbóreo na RPPN Porangaba em Itaguaí, Estado do Rio de Janeiro, Brasil

We have performed a floristic inventory of the tree layer at RPPN Porangaba (Itaguai, RJ). We have sampled 50 plots of 100m2 where all individual trees with DBH ≥ 5 cm were measured. We have sampled 943 individual trees (877 births), distributed in 36 families, 66 genera and 105 species. The species with higher VI were Guarea guidonia (L.) Sleumer, Piptadenia gonoacantha (Mart.) J.F. Macbr, Casearia sylvestris Sw. and Bathysa gymnocarpa K. Schum. The most representative families were Fabaceae (S = 14), Myrtaceae (S = 11) and Moraceae (S = 6). The area holds a representative diversity of submontane forest, but studies are needed on the dynamics of plant community of RPPN Porangaba.