Parametros quantitativos da anatomia da madeira de eucalípto que cresceu em diferentes locais

it is known the influence of the growth place in the properties of the woods and that they are affected mainly by the anatomical structures. the objective of this work was to evaluate the quantitative parameters of the anatomical structure of the eucalypt wood of one clone of the natural hybrid of eucalyptus grandis at 64 months of age occuring in rio claro, state of s？o paulo. the 138 trees were grown in aracruz, domingos martins, alto rio novo, s？o mateus in the state of espírito santo and in mutum and aimorés in the state of minas gerais. the anatomical parameters measured were diameter and vessel frequency, length, fiber and diameter of the fiber, fiber wall thickness and width, height and frequency of the rays. according to the results, it can be concluded that, in relation to the vessels, there were significant differences among all regions. it was also observed significant differences in the parameters related to the rays in all regions. the wood produced in the aracruz region had fibers with length and wall thickness with a much lower quality than the wood in the other studied regions.