Tuft large and dense. Leaves flat, 30-85 cm long, 2-7 mm wide, glabrous, slightly glaucous; apex rounded or obtuse; sheath margin intact or lacerated, predominantly white or straw-coloured. Male inflorescence usually 1/3-2/3 as long as leaves, branched; scape well exserted, longer than rachis, flattened; branches and flower clusters whorled. Female similar to male but unbranched. Cluster bracts inconspicuous, much shorter than flowers, about as wide as long; bract and inner bract whitish, purplish or partly brownish. Flowers ellipsoidal, sessile; male flowers c. 2.5 mm long, females 2.5-3.5 mm long. Sepals and petals scarcely opening, all yellow or sepals purple; petals thicker than sepals.