| alder, alder tree; common alder, European black alder, Alnus glutinosa, Alnus vulgaris; gray alder, Alnus incana; seaside alder, Alnus maritima; white alder, mountain alder, Alnus rhombifolia; red alder, Oregon alder, Alnus rubra; speckled alder, Alnus rugosa; smooth alder, hazel alder, Alnus serrulata; green alder, Alnus veridis; green alder, Alnus veridis crispa, Alnus crispa |