Climbing shrubs, mid-sized, deciduous. Branchlets grayish to reddish, glabrous, lenticels conspicuous; pith brown, lamellate. Petiole 1.2-3.5 cm, glabrous or sparsely setose; leaf blade oblong-ovate to oblong-elliptic or elliptic-lanceolate, 4-8 × 2-4 cm, thinly papery, abaxially glabrous to slightly strigillose on midvein, always very conspicuously white barbate at axils of lateral veins, adaxially glabrous to sparsely strigillose on midvein and lateral veins, midvein and lateral veins subconspicuous to conspicuous on both surfaces, lateral veins 6 or 7 pairs, veinlets reticulate, inconspicuous, base narrowly cuneate-rounded to rounded or truncate, usually oblique, margin serrulate, apex long acuminate. Inflorescences 1-flowered, rarely 2-or 3-flowered cymes; pedicels 1.5-2.2 cm, glabrous; bracts linear, minute. Flowers somewhat pinkish white. Sepals 4(or 5), oblong-ovate, 4-5 mm, glabrous. Petals 4(or 5), obovate, 7-10 mm. Filaments ca. 4 mm; anthers yellow, oblong, ca. 1.5 mm, both ends rounded. Ovary cylindric to slightly bottle-shaped, ca. 3.5 mm, glabrous; styles ca. 4 mm. Fruit orange when mature, ovoid, 1.5-2 cm, glabrous, lenticels absent; persistent sepals reflexed. Seeds ca. 2.5 mm. Fl. May-Jun, fr. Sep. 2n = 58*.
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A climber. It loses its leaves during the year. It grows to 17 m long. The leaves are narrowly oval and 4-8 cm long by 2-4 cm wide. The fruit is 2 cm long.
It grows naturally in Kansu, Shensi, W. Hupeh, Sichuan and Sikang Provinces in W. China. in thickets, 1300-2700 metres. In Yunnan.
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Mountain forests, thickets and moist places at elevations of 1,100-2,700 metres.
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