Shrubs 2–8 m tall, scandent. Branchlets greenish, angled; spines 1–1.5 cm, glabrous, sometimes leafy. Winter buds ovoid, glabrous. Stipules not seen. Petiole 5–10 mm, glabrous; leaf blade ovate-lanceolate, 3.5–5.5 × 1.2–2 cm, thinly leathery, glabrous, abaxially slightly lighter green than adaxial surface, base narrowly cuneate to cuneate, margin crenate-serrate, apex acuminate; midvein abaxially raised, adaxially slightly impressed. Inflorescences terminal or axillary, solitary, fascicled, or racemose; bracts glandular. Flowers ca. 1 cm in diam. Pedicel 5–7 mm. Hypanthium cup-shaped, outside glabrous. Sepals suborbicular, 3–5 mm in diam., outside glabrous, apex rounded. Petals white, suborbicular, ca. 5 mm in diam. Stamens ca. 30. Stigma inflated. Drupe oblong. Fl. Apr–Jun.

* Thickets in mountains; 1500--3000 m. Taiwan.