Herbs perennial, glabrous. Stems tufted, 5-20 cm; branches many, creeping, slender. Leaves 3-5-verticillate; pseudopetiole 1-7 mm; leaf blade ovate to orbicular, 5-9 × 2-7 mm, base abruptly narrowed, apex rounded-obtuse. Cyme subpaniculiform, 4- or 5-flowered. Flowers unequally 4- or 5-merous; pedicel slender, 5-9 mm. Sepals broadly triangular to suboblong, 0.6-1.5 mm, apex obtuse. Petals obovate, 2-2.3 mm, apex obtuse. Stamens 8-10, shorter than or subequaling petals. Nectar scales 3, linear-spatulate, ca. 0.6 mm. Carpels 3, oblong, 2.5-5 mm, base connate. Styles short. Follicles 3-8-seeded. Seeds oblong, ca. 0.6 mm. Fl. Aug-Sep, fr. Oct.

* Rocks in forests; 500-1400 m. S Shaanxi, E Sichuan.