Shrubs or small trees, 2- 15 m high, spiny. Leaves leathery, ovate to oblong-ovate, 4-8 cm long and 3-4 cm wide, tapering or slightly obtuse at the top, rounded or broadly wedge-shaped at the base, serrated at the edge and hairless on both sides. Racemes axillary, 1-2 cm long and villous; Flowers are light yellow or yellow-green, small in shape and short in stalk; Sepals suborbicular; Male flowers have many stamens, and filaments are several times longer than sepals. Female flowers have a short style and a slightly thicker stigma. Berries are spherical, black when mature, and 3-5 mm in diameter; There are seeds 2-3. The flowering period is May, and the fruit ripens in September.
Environmental protection and ecological utilization