| ID Characteristic | P. tremula can be distinguished from the closely related North American P. tremuloides by the leaves being more coarsely toothed. |
| Habitat | Cool temperate regions of Europe and Asia. |
| Bark/Stem Description | 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. |
| Leaf Description | The adult leaves, produced on branches of mature trees, are nearly round, slightly wider than long, 2?8 cm diameter, with a coarsely toothed margin and a laterally flattened petiole 4?8 cm long. The flat petiole allows them to tremble in even slight |
| Flower Description | The flowers are wind-pollinated catkins produced in early spring before the new leaves appear; they are dioecious, with male and female catkins on different trees. The male catkins are patterned green and brown, 5?10 cm long when shedding pollen; the |
