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Corythucha elegans, the willow lace bug, is a bug species in the family Tingidae found on willows in North America. Rhabdophaga rosaria is a type of gall found on willows. Rust, caused by fungi of genus Melampsora, is known to damage leaves of willows, covering them with orange spots.
Salix alba, the white willow, is a species of willow native to Europe and western and central Asia. [ 2 ] [ 3 ] The name derives from the white tone to the undersides of the leaves. It is a medium to large deciduous tree growing up to 10–30 m tall, with a trunk up to 1 m diameter and an irregular, often-leaning crown.
Salix discolor, the American pussy willow [2] or glaucous willow, [3] is a species of willow native to North America, one of two species commonly called pussy willow.. It is native to the vast reaches of Alaska as well as the northern forests and wetlands of Canada (British Columbia east to Newfoundland), and is also found in the northern portions of the contiguous United States (Washington ...
Flowers. Salix nigra is a medium-sized deciduous tree, the largest North American species of willow, growing to 10–30 m (35–100 ft) tall, exceptionally up to 45 m (148 ft), with a trunk 50–80 centimeters (20–30 in) diameter. The bark is dark brown to blackish, becoming fissured in older trees, and frequently forking near the base. [ 3]
Salix planifolia is a shrub varying in size from low and bushy, to long thickets, to a treelike form 9 m (30 ft) in height. The leaves are generally oval in shape with pointed tips, measuring up to 6.5 cm long. They are smooth-edged or serrated, glossy on the upper surface, and sometimes with silky hairs.
It is a deciduous shrub reaching 4–7 metres (13–23 ft) in height, exceptionally 7.6 m (25 ft) [4] spreading by basal shoots to form dense clonal colonies.The leaves are narrow lanceolate, 4–12 centimetres (1 + 1 ⁄ 2 – 4 + 3 ⁄ 4 in) long and 2–10 millimetres (1 ⁄ 16 – 3 ⁄ 8 in) broad, green, to grayish with silky white hairs at least when young; the margin is entire or with ...
Salix lasiolepis is a deciduous large shrub or small multi−trunked tree growing to 10 metres (33 ft) tall. The shoots are yellowish brown and densely hairy when young. The leaves are 3.5–12.5 centimetres (1.4–4.9 in) long and broadly lanceolate in shape. They are green above and glaucous green below.
The flowers are soft silky, and silvery 3-7-cm-long catkins are produced in early spring before the new leaves appear; the male and female catkins are on different plants ( dioecious ). The male catkins mature yellow at pollen release, the female catkins mature pale green. Female catkins. Male catkins. The fruit is a small capsule 5–10 mm ...