Tree Notes is about trees -- especially native trees, trees for wildlife, and trees in history.

Thursday, November 12, 2009

Ten Native Trees with Leathery Leaves

Trees with tough, durable foliage



Leathery leaves of Quercus stellata (post oak)
Image courtesy of Iowa State Extension Service

In tree books and nursery catalogs, the term "leathery leaves" is sometimes used. What does "leathery" mean?

Leathery is an adjective that is used to describe a leaf's texture -- that is, how it feels when you hold the leaf between your fingers. A leaf's texture is a entirely separate characteristic from its size, shape, or color.

"Leathery" is the opposite of delicate. Leathery leaves are tough and durable. They are a bit thicker than most leaves, and they're somewhat pliable. They have a texture that's similar to thin leather. They are not easily torn by accident. A leathery leaf would never be called "limp" -- rather, they are substantial leaves.

When you're wondering if a tree's foliage would be described as leathery, examine a mature leaf. The leaves of a few tree species are leathery as soon as they pop out of the bud, but the leaves of various others are delicate at first but become leathery as they mature.

Homeowners should be aware that leathery leaves are slow to deteriorate. Raking will be needed to remove fallen leaves from the lawn.

Here are some examples of deciduous native trees of North America that have leathery leaves. The Latin names are linked to the trees' respective pages in the USDA Plants database.

Alnus serrulata -- Hazel alder (leaf image)
Fagus grandifolia -- American beech (leaf image)
Liquidambar styraciflua -- American sweetgum (leaf image)
Magnolia acuminata -- Cucumbertree magnolia (leaf inage)
Prunus serotina -- Black cherry (leaf image)
Quercus alba -- White oak (leaf image)
Quercus bicolor -- Swamp white oak (leaf image)
Quercus prinus -- Chestnut oak (leaf image)
Quercus stellata -- Post oak (leaf image)
Rhododendron maximum -- Rosebay rhododendron (leaf image)

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Enrich your life with the study of trees.

"The power to recognize trees at a glance without examining their leaves or flowers or fruit as they are seen, for example, from the car-window during a railroad journey, can only be acquired by studying them as they grow under all possible conditions over wide areas of territory. Such an attainment may not have much practical value, but once acquired it gives to the possessor a good deal of pleasure which is denied to less fortunate travelers."

Charles Sprague Sargent (1841-1927)

Print references I frequently consult

Benvie, Sam. Encyclopedia of North American Trees. Buffalo, NY: Firefly, 2000.

Brockman, C. Frank. Trees of North America: A Guide to Field Identification. Ed. Herbert S. Zim. New York: Golden, 1986.

Cliburn, Jerry, and Ginny Clomps. A Key to Missouri Trees in Winter: An Identification Guide. Conservation Commission of the State of Missouri, 1980.

Collingwood, G. H., Warren David Brush, and Devereux Butcher. Knowing Your Trees. Washington: American Forestry Association, 1978.

Dirr, Michael. Dirr's Hardy Trees and Shrubs: an Illustrated Encyclopedia. Portland, Or.: Timber, 1997.

Elias, Thomas S. The Complete Trees of North America; Field Guide and Natural History. New York: Book Division, Times Mirror Magazines, 1980.

Grimm, William Carey. The Book of Trees;. Harrisburg, PA: Stackpole, 1962.

Hightshoe, Gary L. Native Trees, Shrubs, and Vines for Urban and Rural America: a Planting Design Manual for Environmental Designers. New York: Van Nostrand Reinhold, 1988.

Little, Elbert L. National Audubon Society Field Guide to North American Trees. New York: Chanticleer, 1996.

Martin, Alexander C., Herbert S. Zim, and Arnold L. Nelson. American Wildlife and Plants. New York: McGraw Hill, 1951.

Mitchell, Alan F., and David More. The Trees of North America. New York, NY: Facts On File Publications, 1987.

Randall, Charles E. Enjoying Our Trees. Washington: American Forestry Association, 1969.

Settergren, Carl D., and R. E. McDermott. Trees of Missouri. Columbia: University Extension, 1995.

Sternberg, Guy, and James W. Wilson. Native Trees for North American Landscapes: from the Atlantic to the Rockies. Portland: Timber, 2004.

Wharton, Mary E., and Roger W. Barbour. Trees and Shrubs of Kentucky. Lexington: University of Kentucky, 1973.

Wyman, Donald. Trees for American Gardens. New York: Macmillan, 1965.

Photos and text copyright © 2006-2013 by Genevieve L. Netz. All rights reserved. Do not republish without written permission. My e-mail address is gnetz51@gmail.com