aspen

Types:

European quaking aspen, Populus tremula, quaking aspen

Old World aspen with a broad much-branched crown; northwestern Europe and Siberia to North Africa

American aspen, American quaking aspen, Populus tremuloides

slender aspen native to North America

Canadian aspen, Populus grandidentata, big-toothed aspen, bigtooth aspen, bigtoothed aspen, large tooth aspen, large-toothed aspen

aspen with a narrow crown; eastern North America

Type of:

poplar, poplar tree

any of numerous trees of north temperate regions having light soft wood and flowers borne in catkins