Populus tremuloides Michaux8 of 44
May 21, Acton Grassy Pond Conservation Area
trembling aspen
Leaves of trembling aspen are ovate to suborbicular,
short-pointed, variable at base (subcuneate, rounded, or subcordate),
uniformly crenate-serrulate along margins. A leaf in the lower left has
been rolled by a sawfly larva, Phyllocolpa robusta .