Herbs. Roots napiform, branched at base. Stems clustered, branched distally, 8--12 cm, shortly villous in 1 line. Leaf blade decurved, saccate-oblanceolate or saccate-orbicular proximally, orbicular-lanceolate distally, 5--10 × 2--3 mm, glabrous, base obtuse, apex attenuate. Cymes few to many flowered; bracts similar to leaves but smaller. Pedicel 2.5--5 cm, densely glandular pubescent. Sepals 5, orbicular-lanceolate, 3--4 mm, sparsely pubescent, base broadened, margin white, apex acute. Petals 5, white, obovate, ca. 2 × as long as sepals, apex entire or emarginate. Stamens 10; anthers yellowish green. Ovary ovoid; ovules numerous. Styles 3, filiform. Fl. Jul--Aug.

* Montane forest margins; ca. 2800 m. SW Sichuan.