Jean H Langenheim

Timber Press Portland • Cambridge

. . . gum, the gum of the mountain spruce. He showed me lumps of the scented stuff Like uncut jewels, dull and rough.

-Robert Frost, "The Gum-Gatherer," from Mountain Interval, 1920

Page 1, Agathis australis, kauri; page 2, Boswellia, frankincense. All drawings by Jesse Markman, maps by Gulla Thordarsen and Jesse Markman.

Copyright © 2003 by Jean H. Langenheim All rights reserved

Published in 2003 by

Timber Press, Inc. The Haseltine Building 133 S.W. Second Avenue, Suite 450 Portland, Oregon 97204, U.S.A.

Printed in Hong Kong Library of Congress Cataloging-in-Publication Data

Langenheim, Jean H.

Plant resins : chemistry, evolution, ecology, and ethnobotany / Jean H. Langenheim. p. cm.

Includes bibliographical references (p. ). ISBN 0-88192-574-8 1. Gums and resins. 2. Gums and resins—Utilization. I. Title SB289 .L36 2003 620.l'924—dc21

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