Climbing shrubs, small to mid-sized, semi-evergreen. Branches glabrous, lenticels inconspicuous when young, subconspicuous when old; pith white or brown, lamellate; buds conical, glabrous. Petiole 1.3-2.3 cm, glabrous; leaf blade abaxially pale green, adaxially green, elliptic to oblong to obovate or obovate-lanceolate, 5-13 × 2.5-5.5 cm, firmly membranous, but leathery on two-year-old leaves, glabrous, midvein and lateral veins slightly or strongly raised abaxially, subconspicuous adaxially, lateral veins 7 or 8 pairs, base obtuse to rounded or auriculate, margin mucronate-serrulate, teeth [tips of veinlets] crenate on two-year-old leaves, apex acuminate or rounded. Inflorescences cymose, usually 1- or 2-flowered, slightly tomentose. Flowers unknown. Fruit yellowish green when mature, cylindric, 1.3-1.8 cm, 3-4 mm in diam., sparsely and finely tomentose when young, glabrous when mature, lenticels brownish, raised; persistent sepals reflexed or not, glabrous. Seeds ca. 1.5 mm. Fl. May, fr. Oct. 2n = 58*.