A large deciduous, dioecious tree, up to 20 m tall. Stem upto 2-3 m in circumference, with reddish or grey-brown, scaly bark on old trunk and smooth on younger branches, tender shoots pubescent. Leaves with a pubescent, 2-5 can long petiole; lamina ovate to broadly ovate, 5-15 cm long, (2.5-) 3-10 an broad 3(-5)-nerved from ± cordate base, usually 3-lobed, margins coarsely toothed biserrate, tip or apices of lobes acuminate-caudate, veins hairy beneath; stipules linear-lanceolate, 1.5-2.5 cm long, membranous. Male catkins, 2.5-5 (-6) cm long villous. Male flowers: sepals elliptic-oblong, c. 1.5 mm long, obtuse, hairy stamens with basally flattened filaments. Female catkins cylindric, much shorted than male, 0.5-1.5 cm long, excluding 3.6 mm long, vinous peduncle. Female flowers: sepals (2-) 3 (-4), broadly oblong, equal, c. 2 mm long, c. 1.5 mm broad, ciliate; styles connate at the base, c. 2 mm long, densely lanate hairy, patent. Sorosis fleshy, purple or reddish-purple, 8-25 mm long, sweet, edible.