Leaves are alternate, simple, single toothed, triangle shaped.
This is a fast-growing, relatively short-lived tree, sometimes reaching a to 80 feet and a diameter of 24 inches or more. It has a tall, straight bole. It is also known as Large-toothed aspen.
The single leaves are 3 to 4 inches long, with a dark green upper surface and with large, coarse, irregular teeth. The buds are smaller than the cottonwood, more or less pale and downy rather than resinous.
The fruit is a catkin like the cottonwood fruit but the capsules are smaller and darker in color, containing brown, fine, tufted seeds.
On branches and small trees the bark is light gray in color. On older trees it is more yellowish or brown, breaking into dark gray to brownish-black shallow ridges near the base.
Bark: mostly smooth, olive green on young trees; later brown and furrowed
Height: 60 to 70 ft.
Trunk Diameter: 1 to 2 ft.
Longevity: 50 yrs.
Range: north central and northeastern U.S. and southern Canada
This key was developed by "bt" in June 1982. It was put into HTML format by Stephen Ostermiller in July 1997. Copies of the entire guide in zip format that may be taken to camp on a laptop are available to those who write.