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Female flowers crowded into numerous dense clusters aggregated along each branch; perianth absent; ovary immersed in swollen, fleshy receptacle; stigma sessile, discoid, sometimes covering ovary.
Male flowers in clusters of 2–4, shortly pedicellate; perianth segments equal, valvate; stamens opposite perianth segments, free, filaments thick, anthers multi-thecous.
Dioecious plant with aerial parts deep crimson to flesh-coloured, stems sometimes shading through orange to yellow.
Stems bracteate, surrounded by short lobed sheath at base where emerging through tuber surface.
Male inflorescences paniculate, usually taller, more slender and laxer than the female.
Fruit of pseudo-berries similar to ovaries and aggregated into syncarpia.
Inflorescences fleshy, branched, each branch subtended by a bract.
Tuber large, irregularly lobed, not emitting rhizomes.
