The Blackgum (Nyssa sylvatica) belongs to the Nyssaceae family. It is a tall deciduous tree that is native to eastern and central-southern North America, from southern Ontario south to Florida and eastern Texas. This tree grows in broad-leaved forests and pine forests in plateaus and valleys, and to 15-30 m in height. The bark is gray to dark brown, and deep furrowed in rectangle. The leaves are alternate, elliptic to oblong and entire. They will turn red in fall. The long peduncles are borne at the basis of new leaves in early spring, and bloom the inconspicuous yellowish-green flowers. It is dioecious. The fruit is a drupe and ripens black-blue in fall.