Climbing shrubs, mid-sized, deciduous. Floral branchlets sparsely tomentose, lenticels inconspicuous; two-year-old branches black when dry, striate, with sparse relict strigose hairs, lenticels inconspicuous; pith brown, lamellate. Petiole 2-2.5 cm, glabrous; leaf blade obovate, 6-8.5 × 3.5-5.5 cm, glabrous, midvein and lateral veins conspicuous abaxially, slightly sulcate adaxially, lateral veins 7 or 8 pairs, straight, reticulate veins subconspicuous abaxially with distinct raised parallel cross-bars, base obtuse, margin ciliate-serrulate, apex acute to rounded. Male inflorescences cymose, 1-3-flowered, densely brownish velutinous; peduncles 3-4 mm; pedicels ca. 1 cm; bracts subulate, ca. 2 mm. Flowers reddish. Sepals 5, ovate to oblong-ovate, 6-7 mm, both surfaces densely brownish tomentose. Petals 6, spatulate-obovate, 1.2-1.4 cm, basally gradually narrowed, apex rounded. Filaments 6-8 mm; anthers ovoid, ca. 2.5 mm, sagittate at base; sterile ovary brownish tomentose. Female flowers and fruit unknown. Fl. May, fr. unknown.

● Mountain forests; ca. 900 m. Sichuan (Pingshan).