
Appearance
The bark is gray with a reddish tinge, deeply furrowed and scaly. Branchlets at first are light yellow green, but later turn reddish brown. The wood is reddish brown, with paler sapwood; it is heavy, hard, and close-grained, and will take a high polish. Its specific gravity is 0.7458, with a density of 46.48 lb/cu ft.The winter buds are axillary, minute, dark red, and partly immersed in the bark. Inner scales enlarge when spring growth begins.
Leaves are alternate, four to seven inches long, 1.5 to 2.5 inches wide, oblong to oblanceolate, wedge-shaped at the base, serrate, and acute or acuminate. Leaf veins are feather-veined, the midrib is conspicuous. They emerge from the bud revolute, bronze green and shining, and smooth; when full grown, they are dark green, shining above, and pale and glaucous below. In autumn, they turn bright scarlet. Petioles are long and slender, with stipules wanting. They are heavily laden with acid.
In June and July, cream-white flowers are borne in terminal panicles of secund racemes seven to eight inches long; rachis and short pedicels are downy. The calyx is five-parted and persistent; lobes are valvate in bud. The corolla is ovoid-cylindric, narrowed at the throat, cream-white, and five-toothed. The 10 stamens are inserted on the corolla; filaments are wider than the anthers; anthers are two-celled. The pistil is ovary superior, ovoid, and five-celled; the style is columnar; the stigma is simple; the disk is ten-toothed, and ovules are many.
The fruit is a capsule, downy, five-valved, five-angled, and tipped by the persistent style; the pedicels are curving.

Uses
The sourwood is perfectly hardy in the north and a worthy ornamental tree in lawns and parks. Its late bloom makes it desirable, and its autumnal coloring is particularly beautiful and brilliant. The leaves are heavily charged with acid, and to some extent have the poise of those of the peach. The leaves are also a laxative.It is renowned for nectar, and for the honey which is produced from it. Juice from its blooms is used to make sourwood jelly. The shoots were used by the Cherokee and the Catawba to make arrowshafts.

Cultural
Sourwood Mountain is a popular old-time tune in the Appalachian region of the United States.References:
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