Salix alba, the white willow, is a species of willow native to Europe and western and central Asia. The name derives from the white tone to the undersides of the leaves.
Salix alba
Tree showing whitish foliage compared to surrounding trees
Salix alba tincture
Willows, also called sallows and osiers, of the genus Salix, comprise around 350 species of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions.
Willow
At the base of the petiole a pair of stipules form. These may fall in spring, or last for much of the summer or even for more than one year (marcescence).
Young male catkin
Pollard willow and woodpile in the Bourgoyen-Ossemeersen, Ghent, Belgium