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Perennial or a short-lived perennial; up to 0.9 m high; densely to laxly tufted. Culms erect to geniculate; simple or branched well above base. Leaf blades up to 200 mm long; setaceous; up to 2 mm wide; leaves mainly basal. Flowers: inflorescence contracted or effuse with many spikelets; spikelets 8-10 mm long; excluding awns; glumes usually < 10 mm long; glabrous or long hairy; if hairy; hairs dense or sparsely scattered but at least always present on margins; lemmas tuberculate around point of articulation; articulation between apex of lemma and base of column; column well developed; plumed in upper half; with hairs > 1.5 mm long; only central awn plumose with hairs occurring up to 1/3 above or down to branching point of awns; apex without hairs; callus 0.5-1.2 mm long; with short hairs along entire length and long hairs at junction of lemma and callus; with pungent; naked apex.
Perennial (to subperennial), densely to laxly tufted (erect to geniculate), up to 0.9 m high. Leaves mainly basal, leaf blades up to 200 mm long, setaceous, up to 2 mm wide. Culms simple or branched well above base. Spikelets 8-10 mm long (excluding awns). Inflorescence narrow or effuse with many spikelets; glumes usually shorter than 10 mm, glabrous; lemma tuberculate around point of articulation, articulation between apex of lemma and base of column; column well developed, plumed in upper half, with hairs longer than 1.5 mm; only central awn plumose with hairs occurring up to a third above or down to branching point of awns, apex without hairs; callus 0.5-1.2 mm long, with short hairs along entire length and long hairs at junction of lemma and callus, with pungent, naked tip.
