Herbs perennial. Roots red, fibrous. Rootstock prostrate. Stems erect or arched, 14-25 cm. Leaves alternate, pseudopetiolate; leaf blade oblanceolate, 2.5-4.5 × 0.6-0.8 cm, base cuneate to tapered, apex obtuse. Cyme 3-branched, 2-12 cm in diam., many flowered; branches 2-forked; bracts oblanceolate to subrhomboid, 0.2-4.5 cm, apex obtuse to suboblique. Flowers unequally 4-merous; pedicel of central flower 2-6 mm or absent. Sepals narrowly triangular, 1-1.2 mm, apex obtuse. Petals yellow, linear-lanceolate, ca. 7 × 1.5 mm, apex acute. Stamens 8; antesepalous ones ca. 5 mm; antepetalous ones ca. 4 mm, inserted ca. 1 mm from petal base; anthers purplish red. Nectar scales subtriangular, ca. 0.5 × 0.4 mm, apex retuse. Carpels divergent, narrowly ellipsoid, ca. 5 mm, base connate for 1.3-1.5 mm. Styles 1.5-2 mm. Follicles stellately divergent, many seeded. Seeds narrowly ovoid, brown papilliferous. Fl. Jun-Jul, fr. Jul.

* S Anhui (Dongzhi Xian).