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  Guide to the Common Trees of Pennsylvania

Trees | Glossary | Visual Guide | Leaf Parts, Types, & Position

Tree of Heaven
(Wide & Flat: Alternate Arrangement)

This tree is originally from China and was first planted in this country near Philadelphia by English settlers. Often escaping cultivation, it is now found in disturbed woods, roadsides, vacant lots and railroad banks across southern Pennsylvania. The rapid growth of root sprouts makes it almost impossible to eradicate once established. Ailanthus can grow over 60' high but is often smaller.

Tree of Heaven
Ailanthus altissima (P.Mill.) Swingle
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Leaves
Alternate, compound, 1½'-3' long, composed of 11-41 leaflets, the lower with a few coarse teeth near the base which have distinctive glands.
Twigs
Stout, yellowish-green to reddish-brown, covered with a fine velvety down; Pith large, rather hard, light brown. Twigs have a rank odor when broken.
Fruit
A spirally twisted wing, 1½" long, ½" wide, with 1 seed in the center, clusters often persist far into winter. Male and female flowers occur on separate trees.
Bark
Younger trunks smooth, light gray, older roughened with dark ridges, becoming dark gray and sometimes black.

Select a Tree from a menu below, or download the Visual Guide

Needle-Shaped or Linear

  

Wide & Flat: Opposite Arrangement

Wide and Flat: Alternate Arrangement

Information courtesy of:
PA Department of Conservation & Natural Resources
 
 

Whitetailed Deer
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