Alnus glutinosa, commonly known as the black alder, is a deciduous tree native to Europe, western Asia, and parts of North Africa. It typically grows near water bodies and can reach heights of 20 to 30 meters. The tree is recognized for its dark, rough bark and serrated leaves, which turn yellow in autumn. This species plays a vital role in its ecosystem by improving soil fertility through nitrogen fixation. Its cones produce seeds that are a food source for various birds and small mammals. Additionally, Alnus glutinosa is often used in landscaping and for erosion control along riverbanks.