Tufted perennial. Leaves grass-like, 30–100 cm long, 4–9 mm wide, marginally asperous. Culms erect, equal to or nearly as long as leaves, 40–100 cm high, asperous below and near the leaf-like bracts, smooth in the lower part; subtending bracts very leaf-like, 10–50 cm long; inflorescence of (5–) 10–25 spikes, in 2–4 pedunculate clusters, each cluster of c. 4 or 5 crowded, ± sessile, short spikes 1–4 cm long, and a single longer terminal spike 5–7 cm long, with its uppermost flowers male. Glumes broadly lanceolate, equal to or longer than utricles, acute to aristate, with prominent midrib. Stigmatic branches 3. Utricles ellipsoidal-ovoid, 3.5–4 mm long, obscurely veined, shiny dark brown, shortly and slightly scabrid-beaked.
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