Climbing shrubs, large, deciduous. Branchlets glabrous, young branchlets velutinous, lenticels conspicuous; pith brown, lamellate. Petiole 1.5-4 cm, puberulent when young, glabrous when mature; leaf blade adaxially green, broadly obovate to oblong-obovate, 8-14 × 4.5-9 cm, thinly leathery, abaxially sparsely stellate tomentose when young, glabrous or sparsely puberulent on midvein, adaxially glabrous, lateral veins and midvein conspicuous abaxially, inconspicuous adaxially, lateral veins 5-8 pairs, reticulate veins conspicuous with distinct and raised parallel cross-bars abaxially, base narrowly rounded or cordatulate, margin inconspicuously callose-serrulate or ciliate-serrulate, apex cuspidate or shortly acuminate. Inflorescences cymose, 1-3-flowered; peduncles 3-6 mm; pedicels 1.1-1.5 cm, slightly puberulent. Flowers reddish. Sepals 5 or 6, narrowly ovate to ovate, 5-8 mm, both surfaces brownish tomentose. Petals 7 or 8, obovate to broadly obovate, 1-2 cm, narrowed at base, apex rounded. Filaments 5-8 mm; anthers yellow, oblong, ca. 2 mm. Ovary globose, densely brownish tomentose. Fruit ovoid to subglobose, 2.5-3.3 cm, densely tomentose when young, glabrescent when mature, lenticellate. Fl. unknown, fr. unknown.
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