Previsões tecnológicas na madeira de quatro folhosas neotropicais: uma análise sob enfoque anatômico

Abstract

Based on the anatomic description of three species of Calycophyllum being them Calycophyllum candidissimum, Calycophyllum multiflorum and Calycophyllum spruceanum and one variety of Calycophyllum spruceanum f. brasiliensis, it is intended to infer the wood performance, and assign a proper use to the material, even though empirically. The studied samples come from different scientific institutions, such as Jodrell Laboratory (Kew Gardens, London), Institute for Technological Research (São Paulo, Brazil) and the Black Forest Academy (BFA), Germany. To obtain histological slides and from macerated, the standard technique and the modified Franklin method were used, respectively. The anatomic descriptions followed the IAWA Committee recommendations. The species have the followings characteristics in common: distinct growth rings; pores in radial arrangement and thick walls; diffuse porosity; simple perforation plates; pits small intervessel, ornamented; absent axial parenchyma; heterocell rays; and libriform chambered fiber, medium length, with thin and thick walls. It is assumed that the anatomical characteristics of the wood of the investigated species, confer the wood a high specific mass, resistance to mechanical stress, hight shrinkage, permeability and good natural durability.