Aspen, also known as aspen poplar, poplar (especially outside North America), popple, trembling aspen, bigtooth aspen, quaky ...

Aspen has distinctive, almost-circular leaves with flattened petioles or stems. This flattening causes the leaves to tremble or flutter in the slightest breeze, thereby giving the tree one of its most ...

A remarkable aspen forest that sprouted from a single seedling makes "the Roman Empire seem like a recent phenomenon." ...

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 ...