Alnus glutinosa - Short description and medicinal uses. Alnus glutinosa (Black Alder) - Facts on physical characteristics, habitat, range, and ethnobotany. Includes distribution map. Alnus glutinosa (European Alder) - Detailed facts on native range, supporting soils, climate, associated cover, reproduction, and growth. Discusses wildlife and human uses. Alder: Alnus glutinosa - Photographs of this tree, its leaves, catkins and cones. Alnus glutinosa (European Black Alder) - Physical characteristics of leaf, flower, fruit, twig, and bark. Provides images. Alnus glutinosa (European Alder) - Images, plant synonyms, and scientific classification. Includes invasive plant and introduced plant information for this species.