Dense perennials, cushion-forming. Stems ±erect, much-branched. Leaves only in the most distal part; sheath c. 3–4 cm long; blade rigid, semicylindrical in T.S., canaliculate at base, 2–3 cm long, 1.5–2.0 mm wide; auricles membranous, fused, forming a ligule-like structure. Bracteoles membranous-scarious, unequal; lower bracteoles 4.5 mm long; upper bracteoles 4 mm long. Flowers hermaphrodite or unisexual (plants polygamo-dioecious); pedicel thin, to 5 cm long, exceeding leaves. Tepals 6.5–7.5 mm long. Stamens 6; anthers elongated, 3.5–4.0 mm long, mucronate; filaments 0.3–0.5 mm long; ovary ovoid, brownish, 2.5–3.0 mm long; style slender, 3.5–4.0 mm; stigmas exserted, 1.5–2.0 mm. Capsule ovoid, ±trigonous, brownish, shining, c. 6 mm long, 2.0–2.5 mm wide. Seed minutely reticulate, c. 0.6–0.8 mm long.