Plant to c. 1 m tall. Stems to c. 10 cm long. Leaves 50-80 cm long, 8-10 mm wide, inconspicuously discolorous, attenuate but ultimately obtuse or truncate, without teeth at apex. Inflorescence 60-90 cm long, sparsely and irregularly branched in upper third; functioning flower clusters towards ends of primary or short secondary branches, axis elongating. Flowers white, mostly caducous, each subtended by a minute persistent bract. Sepals elliptic, c. 3 mm long. Petals obovate to obcordate, c. 2.5 mm long. Stamens: filaments ±triangular, outer to 1 mm long, inner to 0.6 mm long; anthers c. 0.6 mm long. Ovary c. 1 mm long; style c. 0.75 mm long. Capsule depressed-globular, c. 0.6 cm long. Seed smooth, ±hemispherical, c. 4.5 mm long.