Description from Flora of China
Trees, up to 10 m tall. Bark gray. Young branchlets compressed. Buds ferruginous pubescent. Leaves opposite; petiole 1.2-2.5 cm, always verruculose; leaf blade elliptic, broadly elliptic, or elliptic-lanceolate, 9-14 × 3.5-7 cm, subleathery or papery, abaxially densely glandular-punctate, pubescent, or subglabrate, adaxially glabrous, midrib adaxially plane, lateral veins 8 or 9 pairs, abaxially robust, adaxially slender, veins slender, densely reticulate, slightly elevated on both surfaces, base subrotund or acute, always asymmetric on sides, apex obtuse or shortly acuminate. Panicles subterminal or axillary, 4-8 cm, ferruginous pubescent, many ramified; lower bracts short, subobovate or lanceolate, ca. 2.5 mm. Pedicels ca. 1 cm. Flowers white, 4-5 mm. Perianth segments elliptic, ca. 3 mm, yellow-brown pubescent and glandular-punctate. Fruits purple-black or black, narrowly ellipsoid, ca. 5.5 × 2.2 cm; fruiting pedicels up to 2.5 cm, ca. 5 mm in diam. Fl. Nov-Mar of next year.
Dense mixed forests or thickets along streams. Guangxi, Hainan, Yunnan [Vietnam].