Smooth Alder - Alnus serrulata
Another shrubby alder that can attain the size of a small tree, this is a widely-distributed species, growing as far north as Nova Scotia, and south to northern Florida and Texas. The leaves are up to 4 inches in length with a wavy margin and fine teeth, dark green above and pale beneath. The trunk is often fluted and the bark smooth. Somewhat shade-intolerant, this is an alder of wet habitats and acidic soils. It is used for streamside restoration. Also named Hazel Alder for the resemblance of the leaves to hazel, Smooth Alder has been used for a variety of ailments.