Quaking Aspen
Populus tremuloides · Salicaceae (Willow and Poplar family)
AI-generated identification · may be incorrect
Leaf Morphology
Leaf Type
Simple, deciduous leaf
Shape
Suborbicular to broadly ovate with an abruptly acuminate tip
Margin
Finely crenate-serrate (finely toothed with rounded or blunt teeth)
Arrangement
Alternate on the twig, attached via a famously flattened petiole
Venation
Pinnate with prominent reticulate secondary venation radiating from the base
Key Features
Flattened petioles causing the leaves to tremble in the wind, smooth white-to-greenish bark, finely toothed rounded-to-ovate leaves, and brilliant yellow fall foliage
Description
The Quaking Aspen is a medium-sized deciduous tree known for its smooth, pale whitish-green bark and dazzling golden autumn displays. The leaves are uniquely adapted to flutter or 'quake' in even the slightest breeze due to their flattened petioles, creating a distinct rustling sound.
Habitat
Found primarily in boreal and cool temperate forests, moist uplands, along streams, and mountain slopes; thrives in full sun and well-drained soils
Native Range
Widespread across North America, from Alaska across Canada down to northern Mexico, making it the most widely distributed tree species on the continent