Plants tufted, with shoots from axils of basalmost leaves, dying to base. Stems 1-4(-7) dm × 1-3 mm, with 5-8 leaf pairs near base and to 15 pairs in all. Leaves easily detached and rooting; blade 4-10 mm wide, 3-5 mm thick, apex acuminate with tip 1 mm. Inflorescences of compact, 1(-3)-flowered cincinni, 5-20-branched, 2-15 cm × 12-20 mm; branches mostly 1-flowered. Flowers: sepals 2.5-4 × 1-2.5 mm; petals 5-6 × 2 mm; corolla 3.5 × 5-7 mm (open). Follicles brown, 7-8 mm. Seeds ca. 0.6 mm. 2n = 88.
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