carr

Woodland in which the wetness of the ground is the dominant site factor, characterized by the presence in the canopy of various mixtures of alder (Alnus glutinosa), willows (Salix spp.) and birch (Betula pubescens). Seven types of wet woodland are recognized in the National vegetation classification.

This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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