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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
It is a substantial deciduous tree growing to 40 metres (130 ft) tall by 10 m (33 ft) broad, with a trunk attaining over 1 metre (3 ft 3 in) in diameter. [3] 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]
Poplars of the cottonwood section are often wetlands or riparian trees. The aspens are among the most important boreal broadleaf trees. [2] Poplars and aspens are important food plants for the larvae of a large number of Lepidoptera species. Pleurotus populinus, the aspen oyster mushroom, is found exclusively on dead wood of Populus trees in ...
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 ...
Leaf of Populus grandidentata or "big-tooth aspen". Bigtooth aspens are dioecious, medium-sized deciduous trees with straight trunks and gently ascending branches.Heights at maturity are around 60–80 feet (18–24 m) with diameters of 8–10 inches (20–25 cm).
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Trembling aspen is the popular name for either: Populus tremuloides (American) Populus tremula (Eurasian) Other uses: Trembling aspen (Konya), a tree in Turkey registered as a national natural monument