Little-tree Willow

Salix arbusculoides is a species of flowering plant in the willow family known by the common name little tree willow. It is native to northern North America, where its distribution extends across Alaska and most of Canada.

This willow is a shrub or tree growing up to 9 meters tall. It has many branches with smooth gray or reddish-brown bark. The leaves are up to 7.5 centimeters long and often have a thin coat of hairs on the undersides. Immature leaves have thicker coats of hair and are paler and yellowish in color. The leaves have toothed edges that are studded with glands that function as resin glands as well as hydathodes. This species is dioecious, with male and female catkins borne on separate individuals. The flowers are pollinated by insects, especially bees.