Cardamine hydrocotyloides W. T. Wang, Acta Bot. Yunnan. 9: 8. 1987. China, Yunnan, Deqin, Benzilan, Mons Yongzhongshan, 6 Jul 1981, 3200–3400 m, Qinghai-Xizang Team 2175 (holotype, PE!; isotypes, KUN!).

            Herbs, perennial. Rhizomes short, thickened and somewhat fleshy at stem base, with several stolons bearing simple leaves. Stems 10–26 cm, erect, subglabrous or puberulent with often curved trichomes, simple from rhizomal branches, not flexuous. Rhizomal leaves and lowermost cauline simple; petiole 1.5–6 cm, puberulent or glabrous, not auriculate at base; leaf blade reniform or suborbicular, 0.5–2.5 ´ 0.8–3.5 cm, papery, glabrous or sparsely pilose adaxially, base cordate, margin repand-crenate or subentire; stolon leaves simple, similar to rhizomal leaves but smaller and with shorter petioles; uppermost cauline leaves usually 3-foliolate, rarely simple; petiole 0.3–2 cm; terminal leaflet suborbicular, reniform, or ovate-suborbicular, 0.6–2 ´ 0.8–3 cm, with a petiolule 0.5–7 mm, base cordate, rounded, or subtruncate, margin entire or repand, rarely slightly lobed; lateral leaflets similar to terminal one, petiolulate. Racemes ebracteate; fruiting pedicels 0.9–2 cm, divaricate or ascending, slender, glabrous or puberulent. Sepals ovate, 2–2.5 ´ 1–1.5 mm, glabrous, not saccate; petals white, obovate, 5–6 ´ 3–4 mm, apex rounded; median filament pairs 3–3.5 mm, slender, toothless; lateral pair 2–2.5 mm; anthers oblong, 0.8–1 mm; ovules 10–14 per ovary. Fruit linear, 1–2.8 cm ´ 1–1.3 mm; valves glabrous, smooth; style 1–3 mm. Seeds brown, oblong, ca. 1.3 ´ 0.8 mm, wingless.

Flowering: Jul-Aug.

Habitat: forests, along ditches and trails.

Elevation: 3200–3400 m.

Distribution: China (Sichuan, Yunnan).