Dioecious trees. Leaves alternate, simple, stipulate. Buds with several clearly visible unequal outer scales. Flowers appearing before the leaves, in pendulous catkins, catkin scales toothed or laciniate; each flower with a cup-like disk; stamens 4-many.
Derivation of name: the classical name for poplars
Worldwide: 35 species in northern temperate regions
ePIC (electronic Plant Information Center): Populus Flora Zambesiaca web site: Populus Google: Web - Images - Scholar GRIN (Germplasm Resources Information Network) taxonomy for plants report for Populus Wikipedia: Populus IPNI (International Plant Names Index): Populus Kew Herbarium catalogue: Populus