Fruit Key and Twig Key to Trees and Shrubs

Fruit Key and Twig Key to Trees and Shrubs

by William M. Harlow
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Fruit Key and Twig Key to Trees and Shrubs by William M. Harlow

These handy, accurate, and easily used keys to fruit and twig identification are the only guides of their sort with photographs — over 350 of them, of nearly every twig and fruit described — making them especially valuable to the novice.
The fruit key (dealing with both deciduous trees and evergreens) begins with a concise introduction, explaining simply and lucidly the process of seeding, and identifying the various organs involved: the cones and flowers, and their component parts and variations. Next the various types of fruits are described — drupe, berry, pome, legume, follicle, capsule, achene, samara, nut — and fruiting habits, followed by a synoptic summary of fruit types.
The introduction to the twig key tells in plain language the process of growth and its relation to twig morphology through leaf scars, branch scars, buds, etc. For the benefit of the unwary, poison-ivy, poison-oak and poison-sumac are immediately and fully described.
Identification in both books is easy. There is a pair of alternative descriptions of each aspect of the specimens. Your choice of the fitting one leads you automatically to the next proper pair. At the end of the chain is the name of your specimen and, as a double check, a photograph. More than 120 different fruits and 160 different twigs are distinguished.
This exceptional work, widely used in university courses in botany, biology, forestry, etc., is a valuable tool and instructor to the naturalist, woodsman, or farmer, and to anyone who has wondered about the name of a leafless tree in winter or been intrigued by an interestingly shaped fruit or seed.

Product Details

ISBN-13: 9780486139524
Publisher: Dover Publications
Publication date: 10/24/2012
Sold by: Barnes & Noble
Format: NOOK Book
Pages: 128
Sales rank: 906,663
File size: 10 MB

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Fruit Key and Twig Key to Trees and Shrubs 5 out of 5 based on 0 ratings. 1 reviews.
Anonymous More than 1 year ago
Dover has a talent for finding older, but still useful, books and reprinting them. This book is a key to fruits and twigs. Many books which attempt to show in photos what fruits/twigs look like are somewhat difficult for the student to interpret. Although this volume is used for classroom instruction, some of the illustrations are not as clear as they could be. This may have happened because the illustrations in the original book were not clear. Nevertheless, Harlow's book is a standard in the field; it may take a little longer to comprehend. I would still recommend it.