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Fruit Key and Twig Key to Trees and Shrubs Paperback – June 1, 1959
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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.
- Print length128 pages
- LanguageEnglish
- PublisherDover Publications
- Publication dateJune 1, 1959
- Dimensions5.44 x 0.32 x 8.48 inches
- ISBN-100486205118
- ISBN-13978-0486205113
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Product details
- Publisher : Dover Publications; Reprint edition (June 1, 1959)
- Language : English
- Paperback : 128 pages
- ISBN-10 : 0486205118
- ISBN-13 : 978-0486205113
- Item Weight : 5.7 ounces
- Dimensions : 5.44 x 0.32 x 8.48 inches
- Best Sellers Rank: #338,379 in Books (See Top 100 in Books)
- #225 in Trees in Biological Sciences
- #491 in Outdoors & Nature Reference
- #27,219 in Reference (Books)
- Customer Reviews:
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Top reviews from the United States
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However, it is still a great book, and many of the trees in my area are in it. I'm going to have to try to find another book though, this one doesn't suit the need.
I'm still giving this book 4 stars, because it is a great book, it is the item description that deserves a lower rating.
the office. Any body who is looking for a book for tree and shrub ID with no leaves this book is it. My forestry professer
also used this book in class.
Top reviews from other countries
The book is standard Dover quality paper and size.
Harlow’s botanical descriptions are original where his dichotomous keys can be better than the latest university websites and other resources.
A companion book is Harlow’s guide to Eastern trees. Both books are excellent.
I positively identified three difficult trees within an hour of getting this book. Other resources had gaps in their botanical descriptions leaving some indecision about these trees in question. Harlow’s fruit and twig keys solved the difficulties with his accurate botanical descriptions.
All of the pictures are in black and white which places more emphasis on the accuracy of his botanical descriptions in a few simple words.
An example is his use of the word “woolly” to describe some buds (like Black Oak) which places emphasis on the type of pubescence. Or his dichotomy of measuring buds by size and conical apex (acute or obtuse).
By following these two keys of Harlow, the reader will gain a deeper knowledge of identifying native trees. This is a valuable skill.
An important and original work that displays a vast knowledge of tree samples from a lifetime of research. Special gratitude must be given to Harlow for writing such excellent books on trees and sharing his extensive knowledge.









