Origin: Europe, North Africa, Caucasus.
Deciduous tree with a conical to oval crown.
Bright, dark green ovate leaves, 5-10cm.
Flowers: dark yellow catkins in spring. Fruit:
ovoidal cones 1-2cm. Grows in humid places,
alongside ditches and riverbeds where water
makes the ground marshy. The root system is
very useful for protecting the ground from
erosion and to improve its fertility.