Densely caespitose perennial up to 80 cm tall; base of culm bulbous with the outer leaf sheaths ultimately breaking up into fibres, exposing the inner ones which are densely tomentose with dirty white hairs; leaf lamina flat or becoming involute, 7–45 cm × 3–6(8) mm, pungent, glabrous or loosely pilose above.
Panicle 13–14.5 cm long, broadly ovate, the branches spreading or ascending, scaberulous, the terminal pedicels up to 8 mm long.