Populus

Populus
Foliage of Populus tremula
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Malpighiales
Family:	Salicaceae
Tribe:	Saliceae[1]
Genus:	Populus
Type species
Populus tremula

Populus is a genus of trees common in the northern hemisphere. They are often called just poplars. The genus has 25–35 species in three sub-groups, which are called poplars, aspens, and cottonwoods.

In the September 2006 issue of Science, it was announced that the Western Balsam Poplar (P. trichocarpa) was the first tree to have its full DNA code sequenced.^[2]

1. ↑ "Genus Populus (poplars)". Taxonomy. UniProt. Retrieved 2010-02-04.
2. ↑ Joint Genome Institute: Populus trichocarpa