Herbs perennial, monoecious, 17-40 cm tall. Stems ascending or erect, simple or branched, pubescent. Leaves alternate; nanophylls absent; stipules lanceolate-linear, 5 × 1.5-2 mm, puberulent along costa; petiole absent; leaf blade obliquely elliptic, 6-8 × 1.5-3.5 cm, thinly herbaceous, major basal lateral veins both arising at base of leaf blade, abaxial surface puberulent, adaxial surface strigose, cystoliths conspicuous or obscure, slightly sparse; base with broader half auriculate, margin dentate, apex caudate-acuminate. Male inflorescences solitary, simple, 5-11 mm in diam.; peduncle 15-50 mm; receptacle small; bracts connate, 1.5-2.8 mm; bracteoles subulate. Female inflorescences solitary, 30-flowered or more, 4-7 mm in diam., sessile; receptacle 3-5 mm in diam.; bracts triangular or narrowly triangular; bracteoles linear. Male flowers 3-or 4-merous. Achenes narrowly ovoid, 10-ribbed. Fl. Jun-Jul.
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