alnus rugosa(n = noun.plant) speckled alder - common shrub of Canada and northeastern United States having shoots scattered with rust-colored down;
is a kind of alder, alder tree
is a member of alnus, genus alnus
alnus, alnus crispa, alnus glutinosa, alnus incana, alnus maritima, alnus rhombifolia, alnus rubra, alnus serrulata, alnus veridis, alnus veridis crispa, alnus vulgaris, genus alnus, rugosa, solidago rugosa, zea mays rugosa