Stems rather stout, erect, triquetrous, smooth, c. 150 cm by 3-4 mm. Leaves shorter than the stem, stiff, 3-15 mm wide, sheaths shining membranous in front. Inflorescence consisting of 4-7 fascicles of panicles consisting of a very lax raceme of up to 7 secondary spikelets. Spikelets lax-flowered, 2-6 cm long, 4-8 mm thick, the female part much longer than the male part, from c. 4-to c. 10-flowered. Glumes (reddish) brown, 5-7 mm long, awn 0-1 mm long. Utricles exceeding the glumes, suberect to patulous, gradually narrowed into the 2-3 mm long beak, 7-9 by 1-1.5 mm.