Culms to 150 cm × 1.5–3 mm. Leaves: sheaths reaching ± to middle of culm, fronts truncate to convex, membranous at mouth, veins diverging proximal to apex leaving acutely triangular veinless area; widest blade 2–6 mm wide. Inflorescences subumbellate, all or most spikelets solitary or in clusters of 2–7 on 3–11 rays, rays not exceeding 9 cm; involucral bracts that surpass inflorescence 1–3, widest bract 2–3 mm wide. Spikelets 3–30, ovoid to narrowly lanceoloid or cylindric, 10–40 × 3–5 mm; scales loosely imbricate, orange-brown to stramineous, 5–6 × 2.5 mm, membranous, transparent, apex 2-fid 0.5–1 mm deep, awns slender, 1–2 × 0.25 mm at base. Flowers: perianth bristles mostly tightly attached to shed achene, medium brown, much shorter than to equaling achene; anthers yellow, 3 mm; styles (2–)3-fid. Achenes pale brown to blackish brown, cuneate-obovate, clearly to obscurely trigonous or some thickly biconvex, angles rounded, 2.5–3.3 × 1.3–2.3 mm, apex rounded, beak minute, surface glossy, exocarp cells not evident at 20X, in cross section 1/3 of mesocarp thickness, cells isodiametric; achene specific gravity greater than water. 2n = 110 (Czech Republic).
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Perennial, up to 1.5 m high. Rhizome with distant scales only associated with the development of culms. Culms 300-800(-1500) mm high. Leaf blades up to 600 mm long, 4-10 mm wide. Flowers: inflorescence simple or 2(3) x compound; spikelets pale golden-brown, borne on rays, oblong in outline at maturity; glumes 5-8 mm long, tightly overlapping, midrib elongated into 1.5-2.0 mm long awn; perianth bristles 4-6.
A sedge. It grows 20-30 cm tall. These grow in clumps and have grass like leaves and solid stalks. It has round turnip shaped root tubers. The stalks are slightly twisted. There are no leaves but short sheaths at the base of the stalk. The flower spike is at the top. These occur singly and are cylinder shaped. The seed are rounded.
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