Herbs perennial. Stems densely pulvinate, densely branched, 4--5 cm. Leaves congested, imbricate; leaf blade subulate, 5--10 × ca. 1 mm, veins raised abaxially, impressed adaxially, margin involute, apex excurved, spinose. Flower solitary, terminal; bracts lanceolate, ca. 2 × 1 mm. Pedicel 2--4 mm, glabrous. Sepals 5, elliptic or ovate, ca. 2.5 × 1.5 mm, 3-veined, base broadened, margin membranous, apex obtuse or acute. Petals 5, white, saccate or narrowly so, ca. 5 × 2 mm. Stamens 10; filaments ca. 2 mm, those opposite sepals with a gland at base; anthers violet. Ovary oblate, ca. 1.2 mm in diam. Styles 3. Capsule ovoid, ca. 2.5 mm, 3-valved; valves 2-cleft at apex. Seeds brown, trigonous-reniform, glabrous. Fl. and fr. Jun--Aug.
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