Herbaceous vines, usually 1-2 m or longer, glabrous. Roots tuberous, sometimes irregular, brown, with many projecting lenticels. Branchlets slender, purplish red. Petiole slender, 1.5-7 cm; leaf blade triangular-oblate to rotund, 2-6 × 2.5-6.5 cm, membranous or papery, base rounded or subtruncate, margin entire or subrepand, apex with a finely mucronate acumen, palmately 7-9-veined. Male inflorescences often in axillary panicles, capitate, with discoid receptacle, peduncle filamentous, 1-2 cm; female inflorescences similar, solitary and axillary, peduncle thicker, 1-2 cm. Male flowers: sepals 4 or 6(or 8), spatulate or subcuneate, 1-1.5 mm; petals 3 or 4(-6), rotund or broadly obovate, ca. 0.5 mm; synandrium shorter than sepals. Female flowers: sepals 1 or 2, occasionally 3(-5), ca. 0.8 mm or longer; petals 2(-4), fleshy, smaller than sepal. Drupes red, broadly rotund, ca. 6.5 mm. Fl. Apr-May, fr. Jun-Jul.
Home