Description from Flora of China
Herbs annual, glabrous. Stems simple or branched at base, erect to ± arched, 5-12 cm. Proximal stem leaf blade linear-oblong, 3-12 mm, base shortly spurred, apex obtuse. Cyme corymbiform, many flowered; bracts linear-oblong. Flowers unequally 5-merous; pedicel 1.5-5 mm. Sepals linear-oblong, unequal, 5.5-6.5 mm, base obtuse and shortly spurred, apex obtuse. Petals yellow, suboblong, 7-7.2 mm, base connate for 0.4-0.5 mm, apex shortly mucronate. Stamens 10; antesepalous ones 5-5.2 mm; antepetalous ones 4-4.1 mm, inserted 1.8-2 mm from petal base. Nectar scales broadly linear-spatulate, apically expanding into a transversely oblong to suborbicular appendage 0.4-0.5 mm. Carpels erect, base connate for ca. 2 mm. Styles ca. 1.5 mm. Follicles oblong, 7.3-7.5 mm, usually ca. 7-seeded. Seeds obovoid, 1.1-1.4 mm, minutely mammillate; funicle long. Fl. Aug, fr. Aug-Sep.
* Grassy places on mountain summits; ca. 4200 m. NC Sichuan (Li Xian).