Leaves subcoriaceous, broadly linear, with 3 prominent nerves, septate-nodulose by numerous cross-nervules, conspicuously narrowed towards the conduplicate base (but not petioled), rather gradually to abruptly contracted into a long, triquetrous, aculeate-scabrous acumen, spinulose-scabrous on the margins in the upper part, 30-65 cm by (10-)15-25 mm. Scapes lateral, from the caudex below the leaves, slender, terete or subtrigonous, striate, smooth, 6-20 cm by c. 1 mm, the base clothed with some pale brown, striate, loose scales up to 5 cm long. Inflorescence consisting of a single spikelet, ovoid or oblong-ovoid, acutish, terete, finally 1½-2 by 1½ cm. Glumes subcoriaceous, ovate-oblong, obtuse, many-nerved, with scarious margins, 8-10 mm long. Flowers about as long as the glumes; outermost scales ciliolate on the keel in the upper half. Style 3-cleft. Nut obovoid-pyriform, terete, slightly rugulose, brown, purplish spotted, shortly stipitate (stipe ½-⅔ mm), c. 4 by 2-2½ mm, the short recurved beak included.
In damp primary forests, along streams, on forested hillsides, 850-1400 m altitude.
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