Description from Flora of China
Trees, to 15 m tall; young branchlets long tomentose. Petiole ca. 3.5 cm, rusty tomentose; leaf blade oblong lanceolate, 7–15 × 2–7 cm, abaxially whitish gray, brown-tomentose to pilose, adaxially drying dark green, shiny, ± bullate, base cuneate, apex acute or acuminate; lateral veins 7–9 on each side at ca. 45° to midrib, abaxially convex, adaxially sunken, as is the reticulate veination. Inflorescences ca. 3 cm, 2.5–3 cm wide in fruit; peduncle ca. 1 cm; involucral bracts many, ovate-rounded or broadly ovate, 5–10 mm, brown-tomentose. Petals oblanceolate, ca. 28 × 6 mm. Ovary glabrous; styles shorter than stamens. Capsules ovoid-globose, angular, 1.3–1.6 cm, styles persistent, long. Seeds dark brown, flattened, narrowly winged. Fl. Mar–May, fr. Jun–Sep.
Evergreen forests; 1500--2300 m. W Yunnan [NE Myanmar].