Anatomia foliar e da madeira de espécies de Xylopia L. (Annonaceae).

Abstract

In the Amazon region, Xylopia species are used to popular medicine, pharmacobotany and to produce wood and fibers. However, the knowledge about vegetative organ anatomy is not enough. Therefore, this work purposed to know leaf and wood anatomy of Xylopia henthamii R. E Fries and Xylopia nítida Dunal, and it is contributing to identify their. For this study usual techniques were used in plant and wood anatomy. The leaf anatomic characteristics is common like dorsiventral mesophyll, hipostomatic leaf, paracytic stomata, simple filiform trichomes, collateral vascular bundles, secretory cavities scattered in mesophyll and petiole, druse idioblastic in petiole and leaf vein is brochidodromous. But they were different about shape of epidermal cell walls in abaxial surface, papillose abaxial surface, invaginated adaxial surface of petiole, vascular bundles and chlorenchyma or fundamental parenchyma in leaf margin, invaginated stomata, striate cuticle and marginal vein. The wood anatomic characteristics presented uniformly in macro and microscopic levei with little distinct growth rings, multiples vessels of two to five, apotracheal axial parenchyma in thin lines and scalariform, simple perforated plates, alternate intervessel pits, rays were homogeneous, mainly three-seriate, with procumbents cells. The main differences between them were length and vessels tangencial diameter. It was concluded that leaf anatomy is efficient to taxonomy, but wood anatomy not, because the homogeneously between that species.