Populus sect. Populus subdivision_ranks = Species subdivision = Populus adenopoda Populus alba Populus grandidentata Populus sieboldii Populus tremula Populus tremuloides

Aspen is a common name for Tree (trees) of the Salicaceae family, most of those in a section (section (botany)), Populus sect. Populus, of the Populus (poplar) genus. Some of the species in the section are: *Populus alba: White Poplar (northwest Africa, southern Europe, east to central Asia) *Populus adenopoda: Chinese Aspen (China, south of P. tremula) *Populus grandidentata: Bigtooth Aspen (eastern North America, south of P. tremuloides) *Populus sieboldii: Japanese Aspen (Japan) *Populus tremula: Common, Swedish, Trembling or Eurasian Aspen (northern Europe & Asia) *Populus tremuloides: Quaking, Trembling or American Aspen (northern & western North America) *Populus � canescens (White Poplar): Grey Poplar (hybrid P. alba � P. tremula)

There are other species.