Salix babylonica but beyond China, it has not generally been as successfully cultivated as some of its hybrid derivatives, being sensitive to late-spring frosts. In the more humid climates of much of Europe and eastern North America, it is susceptible to a canker disease, willow anthracnose ("Marssonina salicicola"), which makes infected trees very short-lived and unsightly. "Salix babylonica" (Babylon willow) has many cultivars, including: Various cultivars of "Salix matsudana" (Chinese willow) are now often included within "Salix babylonica", treated more broadly, including: Yet other weeping willow cultivars are derived from interspecific "Salix" hybrids, including "S. babylonica" in their parentage. The most widely
Salix kusanoi Salix kusanoi Salix kusanoi is a species of willow in the family Salicaceae. It is endemic to Taiwan. It is threatened by habitat loss. It is a deciduous shrub or small tree growing to tall. The leaves are alternate, 9 cm long and 4 cm broad, with an entire margin; they are green above, and paler below with fine silky hairs along the veins. The flowers are produced in catkins in early spring before or as the new leaves appear; it is dioecious, with male and female catkins on separate plants. The male catkins are 8–9 cm long; the female