Description from Flora of China
Evergreen trees, 3-6 m tall. Branchlets cylindric; old branchlets longitudinally dehiscent and laxly orbicular-lenticellate; young branchlets angular, striate, glabrous. Terminal bud narrowly conical, ca. 5 mm; bud scales densely golden pubescent. Leaves alternate; petiole 10-12(-15) cm, glabrous; leaf blade pale abaxially, green-brown adaxially, slightly red on both surfaces when dry, narrowly elliptic to oblong, usually more than 13 cm, 3-5 cm wide, papery or subleathery, yellowish pubescent on both surfaces, later glabrate, pinninerved, midrib convex abaxially, distinctly concave adaxially, lateral veins 8-10 pairs, combinate venose, distinct abaxially, slightly convex adaxially, midrib and lateral veins red when dry, veinlets reticulate, distinct on both surfaces, base broadly cuneate or nearly rounded, apex acute. Umbels solitary, axillary; male umbel ca. 10-flowered, peduncle slender, (1-)1.5-2.5 cm, usually pendent, glabrous; female umbel 8-flowered, peduncle less than 1 cm in bloom, 1-1.5 cm in fruit stage; involucral bracts 4, suborbicular. Male flowers yellowish green; pedicels 2-3 mm, yellowish pubescent; tepals 6, oblong, ca. 3 × 1.5 mm, red glandular punctate; stamens 9-11, 2.5-3.5 mm; filaments densely yellowish pubescent, inner 5 or 6 filaments 2-glandular near base; glands subsessile; reduced pistil clavate; ovary ca. 1 mm; style ca. 1.5 mm; stigma capitate, papillose. Female flowers greenish; pedicels ca. 3 mm, yellowish pubescent; tepals 6, equal in size, oblong, ca. 1.5 × 0.6 mm, red glandular punctate; reduced stamens 9, fasciated, ca. 2 mm, 2-glandular near base of inner 6 filaments; glands ovate; ovary ovate, ca. 1.2 mm; style thick, ca. 1.8 mm, angular; stigma peltate. Fruits globose, 5-6 mm in diam., black when dry; stipes 1-1.2 cm, slightly thickened. Fl. Oct-Nov, fr. Jun-Aug.
● Pinus forests or evergreen broad-leaved forests on mountain slopes; 2100-2900 m. SE Xizang (Mêdog), NW Yunnan.