Herbs perennial, monoecious. Rhizomes present. Stems simple or shortly branched, 30-80 cm tall, sparsely hirtellous, armed with stinging hairs. Stipules free, lanceolate, ca. 2 mm, puberulent; petiole 1-3 cm, sparsely armed with stinging and appressed-puberulent hairs; leaf blade ovate to ovate-lanceolate, 3-6 × 1.5-4 cm, 3(-5)-veined, with stinging and setulose hairs on both surfaces, base broadly cuneate or shallowly cordate, margin incised-serrulate, apex acute or acuminate; cystoliths punctiform. Inflorescences containing proximal female flowers and distal male flowers, spicate, to 4 cm in fruit. Male flowers short pedicellate, in bud ca. 1.2 mm; perianth lobes connate 1/2 of length, puberulent. Female flowers: perianth lobes connate 1/2 of length, dorsal-ventral lobes elliptic-ovate, as long as achene, lateral lobes shorter reaching to apical 1/3 of dorsal-ventral lobes, subglabrous. Achene ovoid, compressed, 1 mm, smooth, invested by persistent perianth lobes. Fl. Jun-Jul, fr. Jul-Sep.

* Thickets, along streams, mountain roadsides; 3400-3600 m. C Taiwan.