Willow are very cross-compatible, and numerous hybrids occur, both naturally and in cultivation. A well-known ornamental example is the weeping willow ("Salix × sepulcralis"), which is a hybrid of Peking willow ("Salix babylonica") from China and white willow ("Salix alba") from Europe. The hybrid cultivar 'Boydii' has gained the Royal Horticultural Society's Award of Garden Merit. Numerous cultivars of "Salix" L. have been developed and named over the centuries. New selections of cultivars with superior technical and ornamental characteristics have been chosen deliberately and applied to various purposes. Most recently, "Salix" has become an important source for bioenergy production and for
Salix bicolor June. It is present in mountains of Southern Europe. This species can be found near streams, waterways and moist subalpine pastures at elevation of above sea level. Salix bicolor Salix bicolor is a species of flowering plant in the family Salicaceae (willows). "Salix bicolor" can reach a height of . This plant usually develop into a large shrub, but may grow as a multi branched tree of up to 4 m height. Branches are glabrous. brown-reddish or chestnut. Leaves are yellow-green, glabrous, elliptical or lanceolate with acute apex. They are long and wide. The catkins are produced in early spring,