Herbs perennial. Stems 5--8 cm tall, pilose. Leaves sessile, ovate-lanceolate or ovate-orbicular, 5--11 × 2--4 mm, both surfaces glabrous, ciliate at proximal margin, midvein raised abaxially, base connate, clasping, apex acuminate. Flowers in terminal cymose umbel; bracts 2, opposite, ovate-orbicular, margin white, membranous. Pedicel 3--25 mm, slender, glabrous. Sepals 5, ovate-lanceolate, 2.5--3 mm, 3-veined, margin membranous, apex acuminate. Petals absent. Stamens 10, shorter than sepals. Ovary ovoid-globose; styles 3. Capsule cylindric-ovoid, ca. 3.5 mm, slightly longer than persistent sepals. Seeds black, ellipsoid, compressed, ca. 0.7 × 0.3 mm, with protuberances. Fl. and fr. Jun--Jul.

* Valleys; ca. 2900 m. Gansu, Ningxia, Qinghai, Shaanxi, Xinjiang.