The plant around us. Volume 1 The plant around us. Volume I | Page 10

Alnus glutinosa
English: Common alder
Spanish: Aliso común
It is a medium size, short-lived tree growing to
a height of up to 30 metres. These trees live in
fields, near rivers, and in some forests. They
look like pine trees, only these are smaller.
The common alder provides food and shelter to
wildlife, with a number of insects, lichens and
fungi being completely dependent on the tree.
Flowers
Leaves
They are inflorescences. Its leaves are 6 to 12 cm
The males measure from 5 to 10 cm, they long. Its petioles are
are thin, cylindrical and pendulum.
The females are smaller than 2 cm and
are dark brown to black.
short. The measure 5 to
10 cm and it has dark
green colour.
Fruit
Greens of young and black
fruit woody in catkins
(cluster inflorescence).
When ripe, measure from 10
to 33 mm and 7 to 12 mm in
diameter, similar to a small
pineapple, scales imbricated