Perennials. Roots ± thick, fibrous. Rhizomes short, thick. Culms 0.5-1.5(-3) m tall, slightly stout, obtusely 3-angled to subterete, base with bladeless sheaths, apically scabrid. Basal leaf sheaths yellowish brown; apical leaf sheaths pale green and mostly to 20 cm. Involucral bracts 11-18, leaflike, ca. 2 × as long as inflorescence, subequal in length, 1-14 mm wide, ± horizontal, stiff, margin scabrous. Inflorescence a decompound anthela; rays 8-18, 3-10 cm, each with 1-4 raylets; raylets 1-1.5 cm, each with 3-9 spikelets. Spikelets clustered at apex of raylets, linear to narrowly linear-ovoid, 5-20 × 1-1.5 mm, flattened, 10-40-flowered; rachilla straight, wingless. Glumes pale green, densely imbricate, ovate, ca. 2 mm, membranous, 3-veined, apex acuminate. Stamens 3; anthers linear, ca. 1 mm, apex setose. Style ca. 1 mm; stigmas 3, ca. 1 mm. Nutlet brown at maturity, stipitate, ellipsoid to ovoid, ca. 0.8 mm, 1/3-1/2 as long as subtending glume, compressed 3-sided, apex apiculate. 2n = 32.
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A leafless sedge. The stems are green and up to 1 m tall. They are slender and triangle shaped. They have ribs. The plant spreads 1 m wide. The leaves are sheaths only. The flowers are in spikes and are yellow or rust coloured. They are surrounded by 12 curving leaf-like bracts that hang down. These form a ring at the top.
Subequal rays bearing clusters of elliptical, acute, shining brown spikelets
Robust, leafless, triangular stems to 2 m. high
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