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A stand of a semideciduous forest of the Raio de Sol s farm (15º 45 54 S and 49º 04 03 W) with 10 ha was studied. It is inserted into the bioregion of the Cerrado Ecomuseum, Goiás state. For the phytosociological inventory, ten sample plots of 20 x 20 m each were systematically laid out. In these plots all living trees with DBH above 5 cm were measured. 742 individuals belonging to 83 species, 67 genera and 36 families were registered. The diameter distribuition shows a tendency of a J inverse model. Ninety six percent of the individuals are situated in the three first diameter classes. Studied vegetal community was balanced observed through the Liocourt quotient.