Description from Flora of China
Herbs 5.5-9.5 cm tall. Stolons arising from leaf axils, glabrous. Stems glabrous. Cauline leaves 2-4, opposite; petiole 0.3-1 cm, brown papillose at axil; leaf blade flabellate, 4-14 mm × 0.9-2 cm, both surfaces glabrous, base broadly cuneate to subtruncate, margin obtusely 7-9-dentate (teeth retuse and 1-verrucose at apex), apex obtuse. Cyme ca. 3 cm; branches glabrous; bracteal leaves with petiole 1.1-1.2 mm, globose tuberculate at axil, leaf blade broadly suborbicular or flabellate to broadly ovate, 2-7 × 2-7.5 mm, both surfaces glabrous, base cuneate to broadly so, margin obtusely 3-7-dentate, teeth usually retuse and 1-verrucose at apex. Flowers ca. 4.7 mm in diam. Sepals spreading, broadly ovate, 1.4-1.7 × 1.7-1.8 mm, apex obtuse or acute. Stamens 8; filaments ca. 0.6 mm. Ovary subinferior; styles ca. 0.5 mm. Disc distinctly 8-lobed, surrounded by sparse, brown papillae. Capsule ca. 2.8 mm, apex subtruncate, retuse; carpels subequal; rostrums ca. 0.5 mm. Seeds black, ovoid, ca. 1 mm, ca. 16-sulcate, ridges with transverse lines. Fl. and fr. Jul-Aug.
* Shaded and wet places in forest understories in ravines; 1600-2600 m. S Gansu (Tianshui Shi), S Shaanxi (Taibai Shan).