(J.Gay ex E.Mey.) Steud., Syn. Pl. Glumac. 2: 294 (1855)
Perennials usually 20–30 cm tall, loosely caespitose, densely hairy at base; rhizome long, ±densely branched, subvertical to ascending, c. 2–3 mm in diam., often covered with greyish brown fibrous remains of old leaf sheaths. Stem up to 1 mm in diam., upper part nodding. Basal leaves usually ±canaliculate, usually 4–7 (–11) cm long, up to 2 mm wide, (leaves of new tillers and intravaginal shoots much narrower, c. 0.5 mm). Cauline leaves 2–3; blade usually 3–4 cm long, ±equalling or shorter than leaf sheaths. All leaves with ±papillose-serrulate margins; apex acute to acuminate. Lower bract herbaceous at base, ±brownish, 1.0–2.0 (–2.5) cm long, usually exceeding inflorescence; middle bracts ovate-lanceolate, membranous, c. 6–9 mm long, ciliate. Inflorescence ±nodding, usually 4–9 (–13)-flowered, spike-like, usually congested, rarely with a ±remote basal cluster (or flower). Bracteoles ovate, membranous, ciliate, c. 2.0–2.5 mm long. Tepals ±equal, entire to sparsely denticulate at apex, usually 3.7–4.5 mm long, castaneous-brown with paler to ±membranous margins above. Stamens 6; anthers 2.0–2.9 mm long; filaments 0.3–0.4 mm long; style 1.8–2.5 mm long; stigmas 2.0–2.5 mm long. Capsule straw-brown to pale castaneous-brown, subglobose, subacute, ±mucronate; capsule segments 3.0–3.5 × 2.6–3.0 mm long. Seeds pale brown, broadly ovoid, usually 1.6–1.9 mm long (including a small paler apex c. 1.5 mm wide); basal appendage yellowish, c. 0.2 mm long, fibrillate. 2n=12 [12AL], fide C.Garcia-Herran, in litt.