Salix babylonica a gold-yellow in autumn. The flowers are arranged in catkins produced early in the spring; it is dioecious, with the male and female catkins on separate trees. "Salix babylonica" was described and named scientifically by Carolus Linnaeus in 1736, who knew the species as the pendulous-branched ("weeping") variant then recently introduced into the Clifford garden in Hartekamp in The Netherlands. Early Chinese cultivar selections include the original weeping willow, "Salix babylonica" 'Pendula', in which the branches and twigs are strongly pendulous, which was presumably spread along ancient trade routes. These distinctive trees were subsequently introduced into England from Aleppo in
Salix gooddingii hairs. The inflorescence is a catkin of flowers up to 8 cm long. Salix gooddingii Salix gooddingii is a species of willow known by the common name Goodding's willow, or Goodding's black willow. It was named for its collector, . "Salix gooddingii" is native to the southwestern United States and northern Mexico, where it grows in moist and wet habitat in many types of habitat from mountains to desert. It is a common riparian species. It is a tree growing to tall, with thick, furrowed, shreddy bark and many thin branches. The leaves are up to 13 cm long, generally