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

Saturday, May 5, 2007

Bark of the Common Hackberry

Celtis occidentalis, Sugarberry, Nettletree


Bark of the sugarberry tree

This common hackberry tree grows in Hopkinsville, Kentucky, on the Catholic church property. Its bark is fairly smooth with occasional warty areas and raised creases.

All of the hackberry trees I've seen around here have bark similar to this. None of them have bark that would be described as ridged.

Thus, I was surprised to read this sentence about hackberries in The Trees of North America by Alan Mitchell: "In Central Park [New York City], the trees have smooth gray bark, but it is normally well covered in dark, abrupt, broken ridges 1 in. thick."

The Audubon field guide shows hackberry bark that is similar to that in the photo above, but Trees & Shrubs of Kentucky has a photo of a hackberry trunk with ridged bark. More research in other texts yields more conflicting descriptions of the bark's texture.

I did notice that the word "warty" appears in most of the descriptions. Even the ridges were described as warty.

Probably there are regional variations in the bark, but Carl Settergren and R.E. McDermott in Trees of Missouri suggest another explanation. "Bark: Grayish with warty projections, smoother on more vigorous trees."

1 comments -- please add yours:

Anonymous said...

I just identified a hackberry tree from a forest jaunt in Missouri. Thanks for this post. The projections on my tree were quite interesting, with many multiple layered "warty projections". :0)

Click any label...

advice (45) alder trees (1) Arbor Day (1) ash trees (11) Atlantic white cedar (1) atmosphere (2) autumn (1) bald cypress trees (8) bark (8) bayberry trees (1) beech trees (8) big trees (11) birch trees (2) black cherry trees (1) black locust trees (2) black walnut trees (7) Bradford pear trees (2) buckeye trees (2) butternut trees (1) catalpa trees (4) cherry trees (2) chestnut trees (1) Christmas trees (1) copyright (1) corkwood (1) crabapple trees (1) dogwood trees (6) drought (2) Eastern redbud trees (5) Eastern redcedar (5) ecosystem (6) education (5) elm trees (4) emerald ash borer (11) Empress tree (2) fast growing trees (7) festivals and carnivals (2) fir trees (1) firewood (6) foliage (11) forest (14) forest fires (1) forestry (7) freebies (2) ginkgo trees (1) hackberry trees (4) hawthorn trees (3) hemlock trees (1) hickory trees (11) historic trees (9) history (42) holly trees (1) honeylocust trees (2) hophornbean trees (1) hoptree (1) hornbeam trees (2) internet (3) invasive (13) juniper trees (5) Kentucky coffeetree (2) landscaping (3) larch trees (1) linden trees (1) logging (4) maple trees (10) mimosa trees (3) mistakes (14) narrow trees (1) native fruit (9) native trees (16) oak trees (38) old growth forests (5) ornamental trees (6) osage orange (5) pawpaw trees (1) pecan trees (1) persimmon tree (3) pine trees (9) poems (5) poison-sumac (1) poplar trees (10) prehistoric trees (3) quizzes etc. (1) rhododendron trees (1) sassafras trees (3) serviceberry trees (2) Silver maple trees (2) small trees (4) spring (7) spruce trees (4) statistics (2) sumac trees (4) sweetgum trees (4) sycamore trees (10) tall trees (5) tree cavities (1) tree identification (8) Tree of heaven (2) tree planting (11) tree problems (40) tree removal (2) tree roots (5) trees for problem spots (7) tuliptrees (tulip poplar) (2) urban forest (7) viburnum trees (1) wetlands (5) wild plum trees (4) wildlife trees (27) willow trees (6) witchhazel trees (1) woodworking (2) yellowwood trees (1) yew trees (1)

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