Climbing shrubs, small, deciduous. Branchlets glabrous, lenticels conspicuous; pith brown, lamellate. Petiole purplish, ca. 2 cm, glabrous; leaf blade abaxially green and glaucous, adaxially dark green, ovate to narrowly ovate, elliptic, or orbicular, 4-8 × 3-4 cm, papery, both surfaces glabrous, midvein and lateral veins purplish and distinct but not raised abaxially, inconspicuous adaxially, lateral veins 5 or 6 pairs, reticulate veins dense, purplish and conspicuous abaxially, base obtuse or rounded, equal or oblique, margin subconspicuously crenate, apex rounded to obtuse and emarginate, or acute to acuminate. Inflorescences cymose, 1-3-flowered, glabrous; peduncles ca. 5 mm; pedicels ca. 1 cm; bracts linear, ca. 1 mm. Flowers white. Sepals 5, ovate to oblong, 2-3 mm, glabrous, ciliate along margins. Petals 5, obovate, 5-6 mm. Filaments ca. 2 mm; anthers yellow, ovoid, ca. 1 mm. Ovary globose, rusty tomentose. Fruit dark green when mature, ovoid, 1.5-1.8 cm, glabrous, with small lenticels. Fl. May, fr. unknown. 2n = 58*.