O estudo tem por escopo somar subsídios biológicos e dendrométrios com vistas à prática de manejo de rendimento sustentado em matas riparias (ciliares) da região Centro-Oeste brasileira. Dentre outros parâmetros, foram considerados o volume de madeira do fuste por hectare, incremento, número de árvores por classes de diâmetro e área basal. Nos 3 525 hectares estudados ocorrem 1 416 indivíduos arbóreos, ou seja, 402 indivíduos por hectares e 282 672 m³ de madeira.

This study is a contribution to the dendrometrical and ecological knowledge of gallery forests of the Brazilian Mid-West region. Its objective is to add biological information to the practice of sustained ecological handling. Among other parameters, the volume, basal areas and number of trees/ha are considered. A total of 1,416 trees was found in 3,525 hectares corresponding to 402 units per hectare and 282,672 m³ of wood.

Resumo Analisadas a estrutura do lenho secundário da raiz, da madeira e algumas de suas propriedades físicas, bem como a estrutura da casca. Foram realizados testes histoquímicos para detectar elementos minerais ocorrentes na madeira e na casca. Paralelamente estabelecida, através de pesquisas bibliográficas, a grafia correta do gênero Annona.

Summary The root of Annona glabra L. is extremely soft, light in weight and spongy, morphologically like cork. The secondary wood has few vessels, no fibers, and has a great deal of axial aerenchyma. The aerenchyma cells are pitted and appear like vessel elements. The bark when cut gives off an abundant volatile perfume. The roots are used by fishemen in Pernambuco (Brazil) and Florida (USA) as floats for their nets. The wood of the trunk is lightweight and soft. In transverse section and in disassociated cells, crystals of silica, calcium carbonate and calcium carbonate and calcium oxalate can be noted, aill in same vessel element. The rays are homogenous of Kribs type II. The bark is perfumed and contains many crystals of calcium oxalate. The spelling of "Annona" should have two n's because of the origin of the word as used by Linnaeus and also according to the list of Nomina Conservanda.