Perennials, densely caespitose; rhizome short, ascending, with internodes very abbreviated; stems usually 5–10 cm tall, to 0.7 mm in diam. Cataphylls castaneous brown at base, shining, ±gradually tapered to ±obtuse apex; blade setiform, 2–5 mm long. Cauline leaves 1–3, sub-basal; sheaths to 3–4 cm long; blade to c. 5–7 cm long. Sterile shoots (2–) 3 (–4)-phyllous; leaves filiform, c. 0.5 mm in diam., usually 10–15 (–20) cm long, much overtopping stem, with tip acute. Bracteole single, membranous, obtuse, to c. 1 mm long. Tepals linear to linear-lanceolate, c. 0.5 mm wide, acuminate, membranous to stramineous, unequal; outer tepals usually (1.1–) 1.3–1.5 cm long; inner tepals (0.9–) 1.1–1.2 cm long. Stamens 6, 5–6 mm long; anthers usually 3.0–3.5 mm long; connective with distinct 1.8–2.0 mm long apical projection; filaments 1.1–1.5 mm long. Style short, c. 1.2–1.5 mm long; stigmas c. 4 mm long. Capsule oblong-trigonous, acuminate, usually 7–9 mm long, pale brown, shining. Seeds castaneous-brown, 0.8–0.9 mm long, or 1.7–2.0 mm long including two unequal whitish appendages c. 0.3 and c. 0.5 mm long.