Herbaceous vines, glabrous. Roots large and tuberous. Branches fleshy, containing red juice, longitudinally striate. Petiole 2-4 cm; leaf blade conspicuously peltate, oblate in outline, 2-4(-8) × 2.5-4.4(-9) cm, slightly fleshy, base truncate or slightly rounded, margin undulately toothed, apex obtuse or mucronate, palmately 8-10-veined, slightly raised abaxially. Male inflorescences compound umbelliform cymes, axillary, solitary or paired; peduncle slender, 0.8-2.5 cm; umbellet pedicels 4-6, 0.3-1 cm; bracts and bracteoles linear-cuneate, 2-2.5 mm, glabrous or very shortly hispid. Male flowers: sepals 6 in 2 whorls, outer whorl elliptic, ca. 1.7 × 0.9-1 mm, without claw, abaxially with very short hairs along midrib; petals 3, fleshy, ca. 0.8 × 1.4 mm, with tubercles inside; synandrium ca. 0.9 mm. Female inflorescences condensed into capitula; peduncle slender, 1-1.5 cm; bracts filamentous, 1-3 mm. Female flowers: sepal 1, minute; petals 2, fleshy. Fruits unknown. Fl. Jun-Jul.
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