Tufted perennial 250-700 mm high; culm base bulbous, surrounded by old, woolly, persistent leaf sheath. Leaf blade to 200 x to 1.5 mm. Inflorescence 50-130 mm long, loosely contracted, interrupted, branches visible. Spikelet 18-25 x to 12 mm, 4-7-flowered; glumes 15-22(-25) mm long, 5-nerved, sometimes densely pubescent; lemma 9-15 mm long, back covered from base to middle in short, dense hairs, and with a row of white hairs across middle of back, glabrous above this; 2-lobed; lobes 5-8 mm long, adnate to the central awn for 1/3-1/2 their length, ending in a short, soft awn; central awn 12-20 mm long; anther 2.8-4.5 mm long.
Perennial to 60 cm, culm bases swollen. Leaves linear, rolled, sheaths densely woolly. Spikelets in a loosely contracted, interrupted panicle, straw-coloured and purple, glumes 5-7-nerved, lemmas 9-15 mm long, hairy below with transverse median row of white hairs, awn 12-20 mm long, geniculate.