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Introduction<br />

The main objective of this handbook is to aid the identification of the common<br />

trees and shrubs grown as fuelwood crops in plantations and forests<br />

chiefly in tropical regions. It is intended as a companion volume to Firewood<br />

Crops: Shrub and Tree Species for Energy Production (National Academy of<br />

Sciences, Washington, D.C., 1980). Sixty woody species were described in<br />

detail and illustrated in Firewood Crops; the collection is expanded to 90<br />

species here.<br />

This book is designed to help in the recognition and naming of growing<br />

plants and specimens through nontechnical botanical descriptions and illustrations<br />

that show details of leaves, flowers, and fruits. Drawings from older<br />

volumes have been assembled for nearly all species. Previously published<br />

distribution maps have been included for many. Additional references, including<br />

classical and newer monographs, are cited as sources for further infornation.<br />

Numerous common names for different languages and countries have<br />

been compiled n.d indexed to assist identification.<br />

Plan of the Text<br />

Information for each species in this book generally follows the plan used in<br />

Firewood Crops. Some subjects have been expanded, and other topics not<br />

related to identification have been condensed or omitted. The botanical<br />

descriptions are similar to those of other publications by the author, especially<br />

the two-volume handbook on the trees of Puerto Rico and the Virgin Islands<br />

(Little and Wadsworth, 1964; Little, Woodbury, and Wadsworth, 1974). Text<br />

and drawings of 30 species from these references have been adapted or revised<br />

here. Throughout, the aim has been to prepare accurate botanical descriptions<br />

in mostly nontechnical terms. The metric system has been used for<br />

measurements. A table for converting to this system is found on the inside<br />

back cover.<br />

Botanical Description<br />

A description and keys to individual species are provided for the 7 genera<br />

which have 3 or roore species described here, and for the group of mangroves.<br />

Next come the species descriptions which include the following information.<br />

The heading above the text of each species gives the accepted scientific<br />

name, a Latin binomial. This scientific name is repeated, with the author<br />

added, as the botanical name; if the author's name is long, it is usually abbreviated.<br />

Next come any synonyms, that is, other widely used scientific names.<br />

These are followed by common names, given by language or country. The<br />

plant family in English and Latin is given last. For the legume family, the subfamily<br />

is added in parentheses.<br />

While scientific names are necessary in international references involving<br />

ix

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