Summary
In this paper the authors studied the anatomy of the stem, the leaf, the fruit, the pseudo-fruit, and wood of the Anacardium spruceanum (Anacardiaceae of the Amazon Region). In Anacardium spruceanum the secretory canals are schyzolysigenus. Thees have origen in the embryon in primary structure and secondary structure; occur in the cortical parenchyma, in the pith, and phloem. In the mesocarp there are cavities, with the wall covered with secretory hairs. The wood with paratracheal parenchyma is vasicentric; homogenous rays occur 1-2 seriate; fine fibres are numerous; foliar epidermis have glandular hairs.