Description from Flora of China
Climbing shrubs, large, deciduous. Branchlets striate, densely reddish brown hispid, glabrescent when old. Petiole 2-2.5 cm, terete, densely reddish hispid; leaf blade abaxially brown, adaxially green, suborbicular, ca. 5.2 × 5 cm, papery, both surfaces sparsely strigose, midvein and lateral veins raised abaxially, lateral veins 7-9 pairs, base cordate, margin setose-serrate, apex shortly cuspidate. Inflorescences cymose, 2- or 3-flowered, reddish brown strigose; pedicels ca. 1.5 cm; bracts 2, subulate, long strigose, ciliate, apex acute. Flowers polygamous, ca. 1.5 cm in diam. Sepals 5, elliptic, abaxially hispidulous, apex obtuse to acute. Petals 5, obovate, ca. 1.5 × as long as sepals. Filaments slender; anthers ovoid, ca. 1/3 as long as stamens, sagittate at base. Ovary ovoid, setose; styles numerous, slender. Fruit unknown. Fl. May-Jun, fr. unknown.
● Yunnan (Zhaotong).