Rhizomes spreading. Stems slen-der, 2-10(-20) cm, pubescent with spreading, purplish, jointed, weakly glandular-tipped hairs. Leaf blades 2-8 × 5-15 mm, sparsely pubescent with purplish, jointed hairs, becoming glabrate on faces, ciliate on margins and midrib. Pedicels 5-25 mm, pubescent. Flowers: sepals often purple tinged, oblong-ovate, 2-2.5 × 4.5-6 mm, apex acute to short-acuminate, sparsely pubescent; petals narrowly oblanceolate, abruptly constricted towards base, 5-6 mm; stamens moderately exserted, 2-3 mm. Capsules purplish, globose or slightly depressed, 7-10 mm diam., glabrous. Seeds 1.2-1.5 mm. 2n = 50-60, 66, 70 (Siberia), 72 (Siberia), 100-110.
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