Salix exigua

Salix exigua (sandbar willow, narrowleaf willow, or coyote willow; syn. S. argophylla, S. hindsiana, S. interior, S. linearifolia, S. luteosericea, S. malacophylla, S. nevadensis, and S. parishiana) is a species of willow native to most of North America except for the southeast and far north, occurring from Alaska east to New Brunswick, and south to northern Mexico. It is considered a threatened species in Massachusetts while the in Connecticut, Maryland, and New Hampshire it is considered endangered. It is a deciduous shrub reaching 4–7 metres (13–23 ft) in height, spreading by basal shoots to form dense clonal colonies. The leaves are narrow lanceolate, 4–12 centimetres (1.6–4.7 in) long and 2–10 millimetres (0.079–0.394 in) broad, green, to grayish with silky white hairs at least when young; the margin is entire or with a few irregular, widely spaced small teeth. The flowers are produced in catkins in late spring, after the leaves appear. It is dioecious, with staminate and pistillate catkins on separate plants, the male catkins up to 10 centimetres (3.9 in) long, the female catkins up to 8 centimetres (3.1 in) long. The fruit is a cluster of capsules, each containing numerous minute seeds embedded in shiny white silk. The two subspecies, which meet in the western Great Plains, are: Salix exigua is cultivated as an ornamental tree. In the UK it has gained the Royal Horticultural Society’s Award of Garden Merit. This willow had many uses for Native Americans; the branches were used as flexible poles and building materials, the smaller twigs were used to make baskets, the bark was made into cord and string, and the bark and leaves had several medicinal uses. The Zuni people take an infusion of the bark for coughs and sore throats.