Perennial; up to 1 m high; densely or laxly tufted. Culms erect or occasionally geniculate; nodes with long stiff spreading hairs; sheaths hairy but not woolly; or glabrous. Leaf blades up to 300 x 1.5 mm; leaves mainly basal. Flowers: panicle contracted or open; branches flexuous; spikelets 6.5-12 mm long; excluding awns; variable in size; straw-coloured; often purple at base; glumes equal to subequal; lower glume oblong to narrowly oblong; apex obtuse to truncate; firm; articulation ± in middle of lemma; column length variable; only central awn plumose; hairs usually silvery; occasionally golden; callus 2.0-2.5 mm long; with pungent; naked apex.