Description from Flora of China
Evergreen trees, 3-15(-20) m tall, ca. 30 cm d.b.h. Bark gray-green or gray-black. One-year-old branchlets subterete, gradually glabrate, with subrounded longitudinally split and brownish lenticels; current year branchlets angular and striate, black-brown, densely gray or yellowish brown tomentose. Terminal bud brown, ovate, ca. 7 mm; bud scales densely yellow-brown tomentose on outer surface. Leaves alternate; petiole 1-1.5 cm, densely gray-yellow or yellow-brown tomentose; leaf blade pale and slightly dark red-brown when dry abaxially, shiny, green, and black-brown when dry adaxially, obovate or oblong, (5-)7.5-15 × (3.5-)4-8 cm, papery, densely gray-white or gray-yellow hirsute abaxially, pinninerved, lateral veins 6-8 pairs, midrib and lateral veins convex abaxially and distinctly concave adaxially, base broadly cuneate or subrounded, margin revolute, apex acute or acuminate. Umbels 1-3, inserted at axillary short branch, 10-12(or 13)-flowered; peduncle of male umbel ca. 1.6 cm, of female umbel 5-9 mm, both densely yellow-brown pubescent; involucral bracts 4, densely yellow-brown pubescent outside, glabrous inside. Male flowers yellowish; pedicels 3.5-5 mm, densely yellow-brown pubescent; tepals 6(or 7), oblong, 3.5-4 × ca. 2 mm, densely yellow-brown pubescent on both surfaces, apex obtuse or acute; stamens 8-10, ca. 5.5 mm; filaments laxly pubescent, 3-5, 2-glandular at base adaxially; glands rounded-reniform, subsessile; reduced pistil ovate, ca. 1.2 mm, glabrous, longitudinally furrowed adaxially, hebetate at apex. Female flowers green-yellow; pedicels 1.5-3.5 mm; tepals linear-lanceolate, ca. 2 × 0.6 mm, apex obtuse or acuminate; reduced stamens fasciated, ca. 2.5 mm; filaments 3 or 4, 2-glandular at middle adaxially; glands ovate, subsessile; pistil glabrous; ovary ovate, ca. 1.4 × 1 mm; style ca. 1.6 mm; stigma obtuse. Fruits globose, ca. 6 mm in diam., glabrous, shiny, purple-red at maturity; stipes 6-9 mm, slightly yellow-brown pubescent. Fl. Feb-Apr, fr. May-Nov.
The fruit contains aromatic oil. The seed oil is used for making soap and machine oil.
Evergreen broad-leaved forests, thickets, forest margins or roadsides on mountain slopes or in ravines; 1500-2300(-2900) m. SE Xizang, NW, SE, and W Yunnan [Bangladesh, India, N Vietnam].