Herbs perennial, (10--)20--30 cm tall. Roots thick. Stems erect or ascending, distally branched, slender, ca. 2 mm in diam. Leaves linear-lanceolate, 2--3 cm × 2--4 mm, midvein prominent, base attenuate, apex acute, mucronulate. Cymes laxly few flowered, glabrous; bracts white, lanceolate, scarious, veins brownish at apex. Pedicel brownish, 0.5--1.5 cm. Calyx brown-purple, campanulate, 3--5 × ca. 4 mm, 5-veined; lobes ovate, margin scarious, apex acuminate. Petals rose, obovate-cuneate, 6--7 × ca. 2 mm, apex truncate or slightly undulate. Stamens ca. 5 mm. Ovary ovoid, ca. 2 mm. Styles equaling stamens. Capsule ovoid. Seeds brown, globose, obtusely tuberculate. Fl. Jul--Aug, fr. Sep.
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