Alnus glutinosa

Alnus glutinosa

© David Guimarães

Description: Deciduous deciduous tree, moderate growth. The rhytidoma is cleft in square or oblong, gray or brown plaques. The leaves are broad or slightly orbicular, and the armpits of the veins of the lower page have long yellowish hairs. The male flowers are arranged in pendulous bunches (purple) and in groups of 2-3, while the female flowers are grouped in inflorescences of 3-8 and, when young, they are red-purple in color, becoming then greens. The infrutescences are dark brown and persist until the following spring. The fruit is a camera and has a narrow wing.

Habitat: River banks, streams, valley bottoms and wetlands.

Where to find in Arouca Geopark: Banks of streams of Moldes (Paços) and View (Escariz); Brooks ' Margins of Bustelo (Alvarenga) and Noninha;  Banks of the Paiva Rivers (Espiunca, Paradinha, Vau) and Urtigosa.