T: Papua New Guinea, Western Highlands, Yobobos grassland area (source of Lagaip River), Laiagam subdistrict, c. 8500 ft [2590 m], 25 Aug 1960, R.D.Hoogland & R.Schodde 7595; holo: NSW; iso: BM, CANB, L, LAE.
Perennials, shortly rhizomatous. Stem terete, hard, mid-green?, c. 120 cm long, 1.8–2.3 mm in diam.; culm striations c. 50; pith strongly interrupted, dense. Sterile leaf-like culms present but real leaves reduced to cataphylls c. 15 cm long, lax, shiny (less so towards apex), abaxially yellow-brown to very dark golden brown towards base, adaxially dark golden brown. Lower bract c. 13 cm long, apparently continuous with culm, exceeding inflorescence. Inflorescence c. 2 cm long, diffuse, with more or less densely clustered flowers; flowers 5–10 per cluster and 2–10 clusters per inflorescence. Tepals acute to acuminate, stramineous-brown, with ±broad membranous margins; outer tepals 2.0–2.5 mm long, slightly longer than or equalling inner tepals. Stamens 3, shorter than outer tepals; anthers c. 0.4 mm long, shorter than filaments. Capsule trilocular, equalling or slightly exceeding outer tepals, elliptic to obovate, golden brown, acute to obtuse, not or scarcely beaked. Seeds c. 0.5 mm long. Fig. 142.