Trees, up to 30 m tall, evergreen, glabrous; trunk up to 60 cm d.b.h.; branchlets usually in whorls, glaucescent. Stipules ca. 1.5 mm, caducous; petioles 3.5-9.5 cm; leaf blade ovate or long ovate, rarely elliptic, 8-22 × 4-11 cm, adaxially hardly shining, abaxially pale papillate, with 3-12 glands per side from margin, basal ones distinctly enlarged, base acute to obtuse, rarely attenuate or cordate, not auriculate, margins entire, apex acuminate; midvein elevated abaxially, lateral veins 10-16 pairs. Inflorescences in terminal whorls and in leaf axils, 4-12 cm, male at upper part, female at base, or sometimes all male. Male flowers: pedicels 2-3 mm; bracts broadly ovate, 1-1.2 × ca. 1.8 mm, base bilateral with 1.5-2 mm oblong and reticular-striate glands; each bract with ca. 6 flowers; bracteoles linear, ca. 1 mm; calyx 2-lobed, lobes 0.5-1 mm, serrulate; stamens with filaments 0.4-0.6 mm, nearly as long as anthers, longer than calyx; anthers globose. Female flowers: pedicels 1.5-2 mm (elongating to 4 mm in fruit); calyx ca. 1 mm, lobes ovate; ovary ovate, smooth, 2-celled; style nearly free. Fruits baccate, 1-or 2-seeded. Seeds subglobose, ca. 5 mm in diam. Fl. Apr-May. n = 22.
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A large evergreen tree. It grows 30 m tall. The trunk is 60 cm across. The young branches are usually in rings. The leaves are oval and 8-22 cm long by 4-11 cm wide. They are pale underneath. The fruit are black. They have 1 or 2 seeds.
In both dense primary and disturbed Diptocarp forest; bamboo forest, secondary formations; mixed deciduous forest; and along streams and on hills and slopes; at elevations up to 1,800 metres.
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A tropical plant. It grows in forests and near streams between 600-700 m above sea level. In Yunnan.
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