Description from Flora of China
Climbing shrubs, large, deciduous. Branchlets reddish or grayish brown, brown strigose to tomentose, lenticellate; pith white to brown, lamellate. Petiole 3.5-6 cm, brown strigose to tomentose; leaf blade narrowly ovate to broadly ovate, 5-14 × 4.5-9.5 cm, membranous to papery, abaxially glabrous, adaxially glabrous or sparsely strigillose on veins, midvein and lateral veins distinct and raised abaxially, sulcate adaxially, lateral veins 6-10 pairs, base rounded to cordate, margin finely serrulate, apex acuminate. Inflorescences cymose, 1-5-flowered, strigose to tomentose; peduncles ca. 8 mm; pedicels ca. 1 cm. Flowers white to pink. Sepals 4-6, ovate, 4-8 mm, both surfaces tomentose. Petals 4-6, obovate to suborbicular, 0.7-1.6 cm, apex rounded. Filaments to 2.5 mm; anthers ovoid, ca. 2 mm, base sagittate. Ovary globose to globose-cylindric, densely tomentose. Fruit globose to globose-cylindric, 2-3.5 cm, glabrous, with brownish lenticels. Fl. May-Jun, fr. Sep-Oct.
● Broad-leaved forests, forest margins, limestone mountains; 1600-1900 m. Sichuan (Ebian, Leibo, Mabian), Yunnan.