Herbs perennial, dioecious, 30-40 cm tall. Stems ascending or erect, simple, glabrous. Leaves alternate, glabrous; nanophylls absent; stipules lanceolate-triangular, 8-10 × 2-3 mm, with cystoliths; petiole 2-4 mm; leaf blade obliquely elliptic, 7-15.5 × 3-6 cm, papery, major basal lateral veins absent and venation pinnate, cystoliths conspicuous, dense; base with broader half broadly cuneate, margin crenate-denticulate, apex caudate-acuminate. Female inflorescences solitary or in pairs, nearly orbicular, 7-17 mm in diam.; peduncle 0-1 mm; receptacle nearly orbicular, 6-8 mm in diam.; bracts triangular; bracteoles linear. Achenes ovoid, 8-ribbed. Fl. Aug-Dec.
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