Densely tufted perennial, up to 0.8 m tall, basal sheath splitting into fibres with age. Leaves linear, flat; ligule an unfringed membrane. Inflorescence an open panicle. Spikelets 14-20 mm long (excluding awns), many-flowered, pallid but flushed purple, awned; glumes unequal, shorter than spikelet; lemma nerves distinct, lobes long-awned, central awn 27 mm long, bent, basally twisted.