Herbs perennial, pinkish green, glabrous or sparsely pubescent. Stems diffuse or ascending, (5--)10--40 cm tall, slender, simple or apically branched. Leaves linear, (1--)1.6--4.5 cm × 2--4 mm, midvein conspicuous, abaxially densely pubescent, basal ones with margin ciliate, apex acuminate. Flowers 6--9, in terminal and sparse dichotomous cymes; bracts linear, margin membranous, apex acute. Pedicel 1.2--1.4 cm. Sepals 5, lanceolate-linear, 6--7 mm, 3-veined, margin narrowly membranous, apex acuminate. Petals 5, 2-cleft nearly to base; lobes narrow. Capsule ovoid-orbicular. Seeds brown, minute, compressed, auriculate, rugulose, with granular protuberances. Fl. Jun--Jul, fr. Aug--Sep.
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