Description from Flora of China
Herbs perennial. Stems pulvinate, branched at base, 4--5 cm; caudex (root crown) woody, with brown, withered, persistent leaves at base. Leaves congested; leaf blade subulate or linear-subulate, triangular in cross section, 5--10 × ca. 1 mm, veins raised abaxially, impressed adaxially, base broadened, membranous, sheathing, margin thickened, hardened, apex spinose. Flower solitary, terminal. Pedicel ca. 5 mm, villous. Sepals 5, narrowly lanceolate, ca. 4 mm, usually sparsely pilose abaxially, 3-veined, margin narrowly membranous, apex erect, acute. Petals 5, white, ovate-elliptic, ca. 5 mm, base not obviously clawed, apex obtuse. Stamens 10, shorter than sepals; filaments opposite sepals with a gland at base. Ovary globose. Styles 3. Fl. Jul.
* Alpine meadows; 4500--4900(--5100) m. SE Xizang.