Estudo anatômico e descritivo das madeiras das espécies da família mimosaceae da flora lenhosa da caatinga nordestina, como contribuição à sua identificação taxonômica.

Abstract

The studies of wood anatomy are increasingly being used by phylogenists, who use anatomy to prove their evolutionary theories. In their evolutionary process, plants have adapted to the mesic conditions and their organs have undergone changes that today are indicative of primitivism or derivation. Studying the anatomy of the wood of plants from different environments is a good parameter for evaluating their evolution. The project Taxonomic Identification of Plants from the Northeastern Caatinga based on Wood Anatomy aims to provide subsidies for the comparative study of plants from the Northeastern Caatinga and the Amazon (Xingu River), as well as to facilitate the identification of woody plants of the Mimosaceae family occurring in this region by means of wood anatomy. From 72 species, covering almost the entire woody flora of the Caatinga Nordestina, 10 species of 7 genera belonging to the Mimosaceae family were studied. From these slides, descriptions and measurements were made for each species. These were later analyzed, resulting in the microscopic anatomical description of the wood and in the elaboration of a taxonomic identification key for the species of the Mimosaceae family that occur in the woody flora of the Northeastern Caatinga (CNPq/MPEG).