Deciduous vines herbaceous or slightly woody at base, glabrous. Branches and branchlets terete, grayish brown when dry, longitudinally striate. Petiole longer than or subequal to leaf blade, slightly thick; leaf blade peltate, insertion 2-3 cm from margin, usually inconspicuously triangular-rotund, 8-15 cm, width subequal to length, papery, both surfaces dull, base subtruncate or slightly emarginate, apex obtuse or slightly rounded, often with a finely mucronate acumen, palmately 9-12-veined, veins thick, together with fine reticulation raised abaxially, becoming brown when dry, slightly glossy. Inflorescences compound umbelliform cymes, axillary; male peduncle 3-5 cm; umbellet rays 5 or 6, ca. 2 cm; cymelets 4-6-fascicled at end of umbellet pedicel; bracts and bracteoles linear or linear-subulate. Male flowers: sepals 6 in 2 whorls, outer whorl elliptic-obovate, 2-2.3 mm, apex obtuse or mucronate, inner whorl slightly smaller, base abruptly narrowed, apex rounded; petals 3, orangish yellow, very broad, 0.8-1 × 1.5-1.8 mm, margin involute, imbricate; synandrium 0.6-0.7 mm. Female inflorescences and flowers unknown. Infructescences compound umbelliform with peduncle thick, 5-7 cm; umbellet pedicels 7-9, 1-2 cm, prostrately extended; fruiting pedicel not fleshy. Drupes obovate, ca. 6 mm. Fl. May-Jul, fr. Jul-Aug.

● Stony slopes in hot valleys. Yunnan (Gejiu).