Climbing shrubs, large, deciduous. Floral branchlets sparsely rusty strigose, lenticels inconspicuous, two-year-old branches glabrous or with some relict strigose hairs; pith brown, lamellate. Petiole 1.5-5 cm, sparsely strigose to glabrous; leaf blade abaxially glaucous, adaxially green, oblong-lanceolate to oblong-ovate, or obovate-lanceolate, 8-22 × 3-8.5 cm, highly variable in shape and size, papery, abaxially glabrous to brownish pubescent on midvein and lateral veins, adaxially glabrous, lateral veins 8 or 9 pairs, base cuneate to rounded, usually oblique, margin subentire to serrulate or coarsely dentate, apex acute to obtuse. Inflorescences cymose, axillary, 1-3-flowered, densely brownish tomentose; peduncles 5-10 mm, pedicels 1.2-1.9 cm; bracts subulate, ca. 3 mm, velutinous. Flowers reddish. Sepals 5, ovate, ca. 5 mm, densely brownish tomentose. Petals 5, obovate, ca. 1 cm. Ovary appressed-globose, ca. 6 mm in diam., densely brownish tomentose. Fruit cylindric-ovoid, ca. 3 cm, glabrous when mature, lenticellate; persistent sepals reflexed. Seeds ca. 2 mm. Fl. May-Jun, fr. Oct. 2n = 58*.