Grey alder

Alnus incana

Height 20 m, bole up to 60 cm diameter. Deciduous. Smooth, grey-green bark, distinct pores. Leaves are alternate, pointed, elliptic, 5-10 x 4-6 cm. Upper surface is dull green, lower surface bluish-green and hairy.

What habitats does it normally live in?

Northern and central Europe. Mountain valleys and sub-Arctic forests.

What are its young like?

Separate male and female catkins on the same tree. Male catkins are short, egg-shaped, turning to green fruit, 1.5 cm long, remains on tree all winter, maturing in autumn.

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