Herbs perennial. Roots black-brown, conic, woody. Stems densely clustered, pulvinate, 6--10 cm, villous distally. Basal leaf blade linear, 2--5 cm × ca. 1 mm, base broadened, apex acute; cauline leaves in 2 or 3 pairs; leaf blade subulate or linear-subulate, 1.1--2 cm × 1--2 mm, midvein raised, base broadened, margin narrowly membranous, apex spinose. Cymes 1--3-flowered; rachis densely hairy; bracts lanceolate, 6--7 mm, base broadened, margin membranous, apex spinose. Sepals 5, lanceolate, 6--7(--8) mm, 1--3-veined, base incrassate, margin narrowly membranous, apex acute. Petals 5, white, ovate, ca. 3/5 as long as sepals. Ovary obovoid, ca. 2 mm. Styles 3, 2--3 mm. Fl. Jul--Aug.
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