Branches red-brown, most parts densely yellow-brown pubescent; buds purple-red, ovoid, with 3 or 4 scales, subglabrous, apex obtuse. Stipules not seen; petiole 1.5–2 cm; leaf blade abaxially pale greeen, adaxially dark green, triangular-ovate or long ovate, 7–11 × 5–9 cm, abaxially densely yellowish brown pubescent on veins, adaxially sparsely pubescent or subglabrous, midvein and lateral veins prominent, adaxially impressed, base rounded or cordate, margin with irregular, simple or double teeth, apex shortly acuminate or caudate-acuminate. Panicle 3.5–4 cm in diam., densely many flowered. Pedicel 2–3 mm. Hypanthium campanulate. Sepals triangular-lanceolate, shorter than hypanthium, margin entire, apex acute. Petals and stamens not seen. Ovary cylindric, glabrous; ovules 3 or 4. Follicles cylindric. Seeds ovoid. Fl. Sep.

Mixed forests; 2700--2800 m. S Xizang (Yadong Xian).