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 jepsonii measuring no more than 2 centimeters long, and female catkins reaching up to 6 centimeters in length. Its bloom period is June. Salix jepsonii Salix jepsonii is a species of willow known by the common name Jepson's willow. it is named for renowned California botanist Willis Linn Jepson. It is endemic to California, found in the Klamath Mountains and throughout the Sierra Nevada. It grows along rivers and streams in high mountain habitat, between in elevation. "Salix jepsonii" is a shrub growing tall, sometimes forming colonial thickets. The lance-shaped leaves may grow over 10 centimeters long. They are hairy when