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Tree Finder: A Manual for Identification of Trees by their Leaves (Eastern US) (Nature Study Guides) Paperback – January 1, 1991
Enhance your purchase
Easily Identify the Trees You Find!
This essential guide by celebrated ecologist May Theilgaard Watts helps readers identify native (and some widely introduced) trees of the United States and Canada, east of the Rocky Mountains. With this handy, easy-to-use guide, you'll be able to identify all sorts of trees in no time.
Features include:
- A dichotomous key, leading the user through a series of simple questions about the shape or appearance of different parts of a tree
- Includes 161 species
- Illustrated with line drawings
- Small (6- by 4-inch) format that fits in a pocket or pack to take along on a hike
- Print length64 pages
- LanguageEnglish
- PublisherNature Study Guild Publishers
- Publication dateJanuary 1, 1991
- Dimensions5.75 x 0.25 x 4 inches
- ISBN-100912550015
- ISBN-13978-0912550015
More items to explore
From the Publisher
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Step-by-Step IdentificationTree Finder provides a simple, fun method for identifying trees. Examine a leaf. Then answer a few short questions that guide you to the correct species. |
Positive ResultsWhen you’ve made your final choice, compare a leaf with the illustration, and check the other features shown. This will help you confirm your identification. |
Wide Range of TreesThis guide is applicable to a vast area. It covers most of the eastern USA and eastern Canada. At 6" x 4", it’s lightweight and pocket-sized to bring with you. |
Editorial Reviews
From the Publisher
This book is one of the "Finders" series of pockets guides to native plants and animals of North America, which includes similar tree keys for the West: Pacific Coast Tree Finder, Rocky Mountain Tree Finder, and Desert Tree Finder.
About the Author
Excerpt. © Reprinted by permission. All rights reserved.
If the twigs and leaf stalks are hairy, is it RED ASH Fraxinus pennsylvanica
If the twigs and leaf stalks are not hairy, go below to
If the leaflets are whitish beneath, it is WHITE ASH Fraxinus americana
If the leaflets are green on both sides, it is GREEN ASH Fraxinus pennsylvanica subinetegerrima
Product details
- Publisher : Nature Study Guild Publishers; 2nd Edition (January 1, 1991)
- Language : English
- Paperback : 64 pages
- ISBN-10 : 0912550015
- ISBN-13 : 978-0912550015
- Item Weight : 1.6 ounces
- Dimensions : 5.75 x 0.25 x 4 inches
- Best Sellers Rank: #40,701 in Books (See Top 100 in Books)
- #8 in Tree Gardening
- #26 in Trees in Biological Sciences
- #60 in Outdoors & Nature Reference
- Customer Reviews:
About the author

May Theilgaard Watts was a poet, artist, gardener, and above all, a teacher. She is best known for her book Reading the Landscape: An Adventure in Ecology (later published in an expanded edition as Reading the Landscape of America,) and as founder of the Illinois Prairie Path.
May was born to Danish parents in Chicago, on May 1, 1893. Her first teaching job was in a one-room schoolhouse. At the start of the school year, she would take a train out to a rural school district, where she lived with a farmer's family. During the summers, she came home to her parents' house in the Ravenswood neighborhood of Chicago, and attended the University of Chicago. There, she took classes from the pioneering American ecologist, Henry C. Cowles, whose work she would popularize in her books.
After graduating from college, May she taught at a Chicago-area high school until her marriage in 1924 to Raymond Watts. While raising her family, she spoke and wrote widely about native plants and landscapes. From 1941 until her retirement, Watts worked as staff naturalist at the Morton Arboretum, west of Chicago, where she created the Arboretum's innovative education program.
May and her husband, Raymond Watts, started the publishing imprint Nature Study Guild Publishers to publish her pocket guides Tree Finder and Flower Finder.
In 1963, at the age of 70, she instigated the movement to convert an abandoned railroad right-of-way into the Illinois Prairie Path. May died in her home in Naperville, Illinois, in 1975, with a piece of unfinished writing waiting for her in her typewriter.
When Reading the Landscape was first published, in 1957, its jacket included a quote from the naturalist Edwin Way Teale: “Mrs. Watts has a valuable and original idea in considering the whole ecological interrelationship represented by each different landscape in turn." Her publisher appended a definition of the word "ecology," evidently not expecting readers to be familiar with the word.
Ecology is no longer an arcane term, in part because of May Theilgaard Watts’ work, through her books, lectures, and field trips, to interest non-scientists in nature and its interrelationships.
Customer reviews
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Learn more how customers reviews work on AmazonReviewed in the United States on February 13, 2023
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Maybe I missed the size in the description?
May work out better being small?
Reviewed in the United States 🇺🇸 on February 13, 2023
Maybe I missed the size in the description?
May work out better being small?
One of the two star reviews said that the book was "not very intuitive". I strongly disagree. It is organized extremely logically. There are a series of (usually) binary choices, eventually leading to species identification. My toddler gets it.
1. Tree Finder: A Manual for the Identification of Trees by Their Leaves (Nature Study Guides)
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Pros:
* 4"x6" 62 page pamphlet easily fits in a pocket.
* It is organized like a choose-your-own-adventure book, so it will ask you questions, and show you some small drawings explaining the question. The drawings next to the questions is probably the best part of the book, since it can be confusing if you don't know what it means for a leaf to be lobed.
* This is the only one that a 10 or 11 year old child might enjoy using to identify trees, although it can still be difficult.
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Cons:
* Once you identify the tree, all you get is the name. The book doesn't tell you anything about its flowers, fruit, lifespan, etc.
* It only contains 161 species. This seems like a lot, but I have run into interesting varieties in my neighborhood such as the Chinaberry, Chinese tallow tree, Chinese parasol tree, or Shumard Oak. In fact, it only has 21 oak varieties, whereas the "Illustrated Book of Trees" has 38.
* Drawings are only in one shade of green and black.
* It only helps you identify trees if their leaves have not fallen.
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Summary:
I gave up on this book pretty quickly, when I failed to identify some trees exactly.
2. Trees of North America: A Guide to Field Identification, Revised and Updated (Golden Field Guide from St. Martin's Press)
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Pros:
* Very nice multicolor drawings. This is especially helpful for understanding the different parts of a bud, or for identifying fruits or flowers.
* Provides a good size paragraph of description of most species.
* 730 species covered, although this number seems misleading. For example, it has 40 species of Oak compared with the "Illustrated Book of Trees", which has 38 species of Oak but only 250 species total. It does include some odd items like the Saguaro cactus, so it might have a lot of items that aren't typically thought of as trees.
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Cons:
* It won't help you identify a tree quickly. You would have to read the whole book until you found the one that matched.
* The index listed the Chinese tallowtree, but when you go to that page you just see the Chinaberry.
* The description of each species is helpful, but could be bigger.
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Summary:
Since I am mainly interested in identifying trees, I haven't used this book much at all. If I want to see a pretty picture of a tree for which I know the name, I'll just google it.
3. The Illustrated Book of Trees: The Comprehensive Field Guide to More Than 250 Trees of Eastern North America
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Pros:
* It includes a tree identification guide for both summer and winter characteristics. (I have not tried to identify a tree without its leaves, though.)
* It includes a half page to a 1.5 page description of most species. That is approximately 250-750 words compared to the approximate 100 words per description in "Trees of North America".
* It contains over 250 species, which has been quite useful.
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Cons:
* This is the hardest book to read. I was constantly be looking up words like glabrous, lanceolate, falcate, and root suckering. Fortunately, it has a glossary.
* The drawings are in black and white. This isn't that bad for leaves, but it is very hard to understand the representation of twigs and their leaf scars.
* The tree identification guide is not always as helpful for large family or genus. For example, it will tell you that the tree is an oak, and then you have to look through 38 descriptions of different oaks.
* I was not able to use it to identify a tree as a willow oak. I was surprised that the "Tree Finder" was able to identify willow oak, although I didn't actually try that until after I had identified the tree, since I had given up on the "Tree Finder".
* I think most children would prefer the pretty pictures in "Trees of North America" over the content in this book.
* The only sycamores it describes are the American and the London plane tree. The "Trees of North America" includes the California, Arizona, and Oriental sycamores.
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Summary:
This book is more usefull than the other two combined, although it can be frustrating nonetheless.
All three books leave out useful information such as how fast a tree grows or how acidic or alkaline the soil can be.
I have several tree ID books & keep thinking I'll outgrow this one, but I haven't yet & I've been using it for a couple of years on a pretty regular basis. Often I'll think I've found a tree that won't be in it, but there it is. It's been so worthwhile that I got a second copy to keep in the truck.













