Perennials, 11–50 cm tall. Rhizome horizontal creeping, short, short-noded; internodes usually 1–3, rarely to 7 mm long. Stem erect, terete, 1–2 mm in diam. Cataphylls 1–3, lax, usually 3–6 cm long, stramineous-brown; basal leaves 1–3. Cauline leaves 2–3 (–4); blade usually 5–15 cm long, 1–2 mm in diam., terete somewhat laterally compressed, unitubular, perfectly septate (septa externally visible, not very distinct); sheaths of cauline leaves usually lax and ±dilated; auricles scarious to yellowish, oblong, obtuse or subacute, 1.0–1.5 mm long. Lower bract leaf-like, 0.5–3.0 cm long, usually erecto-patent, equalling or longer than inflorescence (rarely shorter). Inflorescence of 1–5 (–7) globose, many-flowered congested heads, or 1–2 heads on erect to suberect rigid peduncles. Tepals subequal, with outer ones (3.5–) 3.7–4.5 mm long, slightly longer than inner ones, very narrowly triangular-lanceolate, subulate at apex, greenish dorsally, pale brown at apex,with central band distinctly 3-veined. Stamens 3, c.1/2 as long as perianth; anthers 0.5–0.7 (–0.8) mm long, 2/3–1/2 as long as 0.8–1.0 mm filaments; style c. 0.2 mm long; stigmas c. 0.7–1.5 mm long. Capsule 4–5 mm long, exceeding perianth, unilocular, narrowly pyramidal, gradually tapering to a 0.5–1 mm rostrum, yellow brownish, shiny. Seeds (0.3–) 0.4–0.5 mm long, ellipsoid, finely reticulate. 2n = 40, fide M.Zandee, Proc. Kon. Ned. Akad. Wet., C, 84: 245 (1981).