Tree to 30 m high, dioecious. Leaves usually distinctly peltate; lamina broadly ovate, crenate, acute to shortly acuminate apex, rounded to cordate at base, c. 7–20 cm long, subglabrous above, subglabrous to densely irritant-pubescent beneath; petiole 3–10 cm long; stipules 1–2 cm long. Panicles solitary, 5–15 cm long, lax, puberulous, with scattered stinging hairs; flowers minute, green, shortly pedicellate, in small clusters. Male flowers 4-merous; perianth segments c. 1.5 mm long, subtended by c. 4 slender bracts. Female flowers: perianth segments 4, slender, persistent, two c. 0.75 cm long, one slightly shorter, one c. 0.25 mm long; stigma c. 1.5 mm long, pubescent. Achenes deflexed, subcircular, c. 2 mm long, obliquely beaked, flattened, smooth, with perianth enclosing base.
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