Herbs annual. Roots fibrous. Flowering stems simple, erect, ± slender and weak, ca. 12 cm. Leaves alternate. Cyme lax, ca. 6 × 9 cm, many flowered. Flowers unequally 5-merous. Sepals linear-obovate, unequal, 4-8.8 × 2-2.3 mm, base connate and spurless, apex obtuse. Petals linear-triangular, 4-4.4 × 1.4-1.6 mm, margin entire, apex acute. Stamens 10; antesepalous ones 3-3.3 mm; antepetalous ones inserted below middle of petals, adnate for ca. 1 mm; anthers ca. 0.4 mm. Nectar scales linear, 0.8-1.1 × ca. 0.2 mm, apex obtuse. Carpels divergent, 4-4.7 mm, base connate for 1.2-1.5 mm. Styles 0.8-1 mm. Follicles divaricate, many seeded. Seeds obovoid, ca. 0.6 mm, minutely mammillate. Fr. Nov.

* W Yunnan (Dali Xian).