Description from Flora of China
Trees, 15-18 m tall, up to 1.5 m d.b.h., whole plant glabrous. Bark gray-brown. Branchlets robust, slightly compressed, striate. Terminal buds ovoid, leathery. Leaves opposite or subopposite; petiole robust, 1.2-2 cm; leaf blade adaxially shiny, dark brown or black-brown when dry, narrowly elliptic or elliptic, 9-15(-19) × 4.5-6(-8) cm, slightly oblique, thickly leathery or leathery, midrib adaxially impressed, lateral veins 6-9 pairs, conspicuously elevated on both surfaces, reticulate veinlets conspicuously elevated, base cuneate, margin undulate and slightly revolute, apex usually shortly acuminate with an obtuse acumen. Panicles or racemes 1.5-5 cm, robust, a few clustered at apex of branchlet. Pedicels 5-10 mm. Perianth segments ovate or ovate-orbicular, 1.5-2 mm, glabrous or somewhat pubescent inside and margin white ciliolate. Fruits green when young, dark red or blackish brown when mature, narrowly ellipsoid, 4-4.5 × 1.5-2.5 cm, sometimes slightly oblique, smooth; fruiting pedicels 5-8 × 3-5 mm, not thickened at both ends. Fl. May, fr. Jun-Dec.
● Dense forests on mountain slopes, humid places in sparse mountain forests; ca. 1000 m. Guangxi, Hainan, Yunnan.