Big-tooth aspen is a rather large (to 100 ft) successional tree that readily regenerates after fires producing multiple root suckers from rootstocks. Myles Standish SF, Plymouth, May 22

Big-tooth aspen typically forms clonal groves originating from rootstock after fires or other disturbance. One of many groves in Myles Standish SF, Plymouth, October 8

Leaves of an adult tree emerging white-hairy in spring. Leaves in adult trees differ from those in young root suckers and saplings. Tidmarsh Sanctuary, Plymouth, May 12

Adult leaves promptly loosing their pubescence. Rocky Gutter WMA, Middleborough, May 18

Leaves on an adult tree are round, with coarse blunt teeth, and nearly completely devoid of hairs when mature (in summer). Myles Standish SF, Carver, July 21.

Juvenile leaves of root suckers are not the same as those of adult trees: they are much larger, of a different shape, velvety white pubescent on the underside. This young plant will start developing adult leaves on its third or fourth year, when it begins to branch. Myles Standish SF, Plymouth, July 4

Bark of big-tooth aspen. Long Duck Pond Preserve, Plymouth, July 16