Tussocks dense. Leaves flat or channelled, 30–60 cm long, 1–2 mm wide, glabrous, old leaves coiled and straw-coloured; apex obtuse; sheath margins lacerated, pale brown to purple. Male inflorescence largely concealed among leaf bases, c. 4–5 cm long, branched; branches whorled or alternate; scape shorter than rachis, hidden; flowers separate or 2 or 3 together. Female inflorescence similar, smaller, almost completely hidden. Bracts tapering, shorter to slightly longer than pedicel; inner bract present. Male flowers globular or ovoid, 3.5–6 mm long, pedicellate; sepals and petals incurved; sepals shorter, thinner than petals, purple; petals fleshy, yellow. Female flowers similar, ovoid, 5–8 mm long.