American Elm (Ulmus americana)

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American Elm (Ulmus americana)

A fairly common large tree of bottomland forests. Before the Dutch Elm Disease hit, it was familiar as a common, vase-shaped street tree.

Blacksburg, Montgomery Co., VA 7/13/07.

American Elm (Ulmus americana)

The leaf bases are very lopsided, like those of Slippery Elm (U. rubra), but the leaves are normally smooth above, not rough.

Blacksburg, Montgomery Co., VA 7/13/07.

American Elm (Ulmus americana)

Also compare with the common Winged Elm (U. alata), which has shorter, narrower leaves. Durham Co., NC 6/8/03.

American Elm (Ulmus americana)

Mecklenburg Co., VA 5/2/05.

American Elm (Ulmus americana) flowers

The flowers, which are produced in early spring before the leaves emerge, are green, like those of Slippery Elm, and unlike the dull reddish tinged flowers of the Winged Elm. American Elm samaras (fruits) are notched at the tip and have ciliate margins; those of Slippery Elm are entire and smooth.

Orange Co., NC 3/9/08.

American Elm (Ulmus americana)

Bark of a large tree.

Mecklenburg Co., VA 5/2/05.

More information:
Trees of Alabama and the Southeast
US Forest Service Silvics Manual
University of Connecticut
Virginia Tech Dendrology

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Revised 6/5/08 cwcook@duke.edu

All photographs and text ©2008 by Will Cook unless otherwise indicated.