Perennials, to 50 cm tall, densely caespitose; rhizome short, stout, many-headed. Stem rigid, erect, terete, finely 12–15-striate; subepidermal sclerenchyma strands present; pith continuous, of rounded parenchymatous cells. Two basal cataphylls stramineous-scarious, the others deep castaneous; uppermost cataphyll bearing a leaf-blade 20–30 cm long; auricles developed, short; blade ±canaliculate, acute (subpungent). Lower bract erect, forming an apparent prolongation of stem, 3–4 cm long, shorter than inflorescence. Inflorescence pseudolateral, ±loose, compound, c. 20–40-flowered, of c. 6–12 main branches with loose unilateral cymes. Bracteoles ovate, acute, c. 1 mm long, scarious. Tepals subequal (outer slightly longer), ±lanceolate, 3.0–3.5 mm long, acute to acuminate, pale brown; central band 3-veined with veins dark; margins broad, membranous. Stamens 6, ±half as long as tepals; anthers c. 0.5–0.6 mm long; filaments c. 1–1.2 mm long; style c. 0.1 mm long. Capsule ±ovoid, triseptate, c. 3 mm long, shorter than perianth; apex truncate to retuse, pale castaneous. Seeds ovoid-ellipsoid, c. 0.5 × 0.2–0.3 mm, distinctly apiculate, reticulate; appendages absent.