Betula lenta (Sweet birch): Leaves
		The thin, papery leaves are simple, alternate and doubly-serrate, with a heart-shaped or unequally rounded base. They are 2.5 to 6 inches long, glossy and dark green above and paler and hairy on the veins beneath, occurring in pairs on lateral spur shoots on older branches. This species exhibits the best autumn color of all commonly cultivated birches, turning a rich, golden yellow in the fall.