Tufted, erect perennial, up to 1 m tall. Leaf sheaths truncate at apex, blades absent. Stems rigid, compressed-cylindrical, 2-3 mm diam. Inflorescence appearing subterminal or lateral, a dense, rounded, cluster of brown spikelets (5-)9-20 x (5-)9-20 mm, overtopped by an erect, rigid, basal bract with obtuse apex.
Tufted perennial with rigid stems to 100 cm. Spikelets in dense, brown heads.