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Populus tremuloides is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen.It is commonly called quaking aspen, [2] [3] [4] trembling aspen, [2] [3] American aspen, [3] mountain or golden aspen, [5] trembling poplar, [5] white poplar, [5] and popple, [5] as well as others. [5]
They are all medium-sized deciduous trees reaching 15–30 m (50–100 ft) tall. In North America, the aspen is referred to as quaking aspen or trembling aspen because the leaves "quake" or tremble in the wind. This is due to their flattened petioles which reduce aerodynamic drag on the trunk and branches. Aspen trees near Crested Butte, Colorado
[citation needed] These trees are all medium-sized deciduous trees ranging 15–30 metres (49–98 ft) tall. All of the species in section Populus typically grow in large clonal colonies derived from a single seedling, and spreading by means of root suckers ; new stems in the colony may appear at up to 30–40 metres from the previous trees.
Arizona's Aspen trees are an iconic symbol of fall, drawing in thousands of hikers and photographers to the high country every year. However, research out of Northern Arizona University suggests ...
The threat to aspens is so great that researchers see a future where the trees no longer grow in the Southwest. A fast-moving infestation of tiny insects threatens the survival of Arizona's aspen ...
Systems of classification used to define large trees vary considerably, leading to some confusion about Pando's status. Within the United States, the Official Register of Champion Trees defines the largest trees in a species-specific way; in this case, Pando is the largest aspen tree (Populus tremuloides). In forestry, the largest trees are ...
An initiative to save one of Scotland's most endangered species of tree has been launched in the Cairngorms National Park. Aspen provides a vital habitat for rare wildlife, plants and fungi and is ...
The bark is pale greenish-grey and smooth on young trees with dark grey diamond-shaped lenticels, becoming dark grey and fissured on older trees. [ citation needed ] The adult leaves , produced on branches of mature trees, are nearly round, slightly wider than long, 2–8 cm (1–3 in) diameter, with a coarsely toothed margin and a laterally ...