Thick, yellowish green tufts. Rhizome 5–8 mm. diam., very hard and woody. Culms 60–150 cm. × 2–4 mm., up to 6 mm. wide at base. Lvs , almost all cauline and = or > culms; lamina up to 9 mm. wide, flat or involute, glab. abaxially, margins scabrid; sheaths all closely appressed to and enclosing base of culm, slightly rough above, becoming dark brown to almost black, and smooth and shining towards the node. Panicle 20–40 × 3–6 cm., rigid, us. erect, many-fld, light brown, branchlets 2–7–(13) cm. long, often in dense, ± distant clusters along the axis of the panicle. Spikelets 1-fld. c. 8 mm. long, alternate on the branchlets, sessile or shortly stalked. Glumes 4–5; the outer 2–3 light red-brown; inner glumes pale cream, with a red lacerate tip. Stamens 4. Style-branches 3. Nut 3.5–4.5 mm. long, slightly < 2 mm. diam., oblong-ellipsoid or oblong-obovoid, black, shining, with a minute apiculate tip; endocarp obscurely transversely striate within.
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