Leaves on non-flowering shoots 20-50(-120) cm x (2-)5-12 mm, dark green, with rounded, often mucronate apex, those on flowering stems usually narrower; sheaths closed, splitting irregularly when old. Flowering stems up to 80(-150) cm, terminal, much-branched. Retinacula absent, except rarely in the lowest flower. Stigma twice as long as style. Fruit 3-3.5 mm, ellipsoid.