alnus glutinosa(n = noun.plant) alnus vulgaris, common alder, european black alder - medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy beneath;
is a kind of alder, alder tree
is a member of alnus, genus alnus

alnus, alnus crispa, alnus incana, alnus maritima, alnus rhombifolia, alnus rubra, alnus rugosa, alnus serrulata, alnus veridis, alnus veridis crispa, alnus vulgaris, genus alnus, myxine glutinosa