Populus Tremula, commonly known as the trembling poplar or aspen tree, is a species of fast-growing deciduous trees. The unique feature of trembling poplars is the quivering of their leaves in even the slightest of breezes, producing a rustling sound. Many synonyms have been used to refer to Populus Tremula, including quaking aspen, European aspen, Aspen poplar, and columnar aspen. The Aspen poplar gets its name from the fact that it is often used for making matchsticks, while the columnar aspen refers to the tall and thin shape of the tree. While these synonyms are still used, Populus Tremula is the accepted scientific botanical name for this tree.