alnus incana

Alnus incana, the grey alder or speckled alder, is a species of tree in the birch family, with a wide range across the cooler parts of the Northern Hemisphere.

It is a small- to medium-sized tree 15–20 m (49–66 ft) tall with smooth grey bark even in old age, its life span being a maximum of 60 to 100 years. The leaves are matte green, ovoid, 5–11 cm (2–4 1⁄4 in) long and 4–8 cm (1 1⁄2–3 1⁄4 in) broad. The flowers are catkins, appearing early in spring before the leaves emerge, the male catkins pendulous ...