The Pacific willow (Salix lucida ssp. lasiandra) belongs to Salicaceae (the Willow family). It is a semi-tall deciduous tree that is native to western North America, Alaska east to Northwest Territory, and south to California and New Mexico. This tree grows in wet mountains, subalpine forests, valley grasslands or riparian wetlands, and it can reach up to 9 m in height. It is a shrubby-looking tree. The leaves are ovate and arranged in alternate. The inconspicuous flowers bloom in the catkins from March to May. The seeds are attached to cotton-like structures and dispersed by the wind.