Trees, up to 25 m tall. Branchlets with grayish appressed tomentum. Leaves 4-6-crowded at apex of branchlet, nearly verticillate; petiole 2-3 cm, stout, densely tomentose; leaf blade glaucous abaxially, lanceolate, 17-40 × 3.7-13 cm, pubescent along midrib and lateral veins abaxially, glabrous adaxially, pinninerved, lateral veins 9-12 pairs, base cuneate, apex acuminate or long acuminate. Umbels mostly arranged in racemes, white sericeous, 5-flowered; peduncle ca. 1.5 cm. Pedicel 2-3 mm. Perianth tube obconical; perianth segments 6, ovate, 3-nerved. Male flowers: fertile stamens 9; filaments glabrous, of 3rd whorls each with 2 small globose glands at base. Female flowers: staminodes 9; ovary ovoid, glabrous. Fruit subglobose, 6-8 mm in diam., seated on shallowly entire or undulate cup-shaped perianth tube; fruiting pedicel 5-8 mm, pubescent. Fl. Dec-Feb of next year, fr. Jul-Aug.

The wood is used for construction, furniture, and industrial timber.

Evergreen broad-leaved forests; 600-1300 m. S Yunnan [N Thailand].