Herbs perennial, ca. 0.7 m tall, sparsely strigillose. Monoecious. Leaves alternate on upper stems or opposite on lower stems. Alternate leaves: stipules lanceolate, 4-6 mm; petiole 0.4-2 cm, sparsely strigillose; leaf blade elliptic, 2.7-7.5 × 1-3 cm, thinly herbaceous, abaxial surface pubescent, adaxial surface long appressed hirsute, apex acuminate. Opposite leaves unequal in size; petiole 2.4-3.8 cm, sparsely strigillose; leaf blade elliptic or broadly rhombic, 8-11 × 4-5.5 cm, secondary veins 2 each side of midvein, base broadly cuneate, margin minutely serrulate, teeth 1-2.5 mm, apex tricuspidate. Glomerules on axillary, lax, unbranched spikelike flowering branches; male or bisexual ones in proximal axils, 3-8 cm; female ones in distal axils. Male flowers 4-merous, subsessile; perianth lobes boat-shaped to elliptic, ca. 1 mm, sparsely strigillose, connate to middle; rudimentary ovule ellipsoid, ca. 0.8 mm. Female flowers: perianth tube narrowly ellipsoid, compressed, ca. 0.5 mm, strigillose on shoulder, 2-toothed at apex. Fl. Aug.

* Along streams; ca. 200 m. Guangxi (Lingyun).