The Alder leaf is rounded to ovate roundish and 6 – 12 cm (2.4 – 4.7 in) long and broad. The veins go opposite from the central axis of the leaf. The leaf has no peak. The leaf margin is double serrated.
The male flowers (catkins) are conspicuous, the female flowers are inconspicuous.
Small woody cones, first green then dark brown.
The branches are smooth and brown-green.
riverbank area, pioneer plant