Leaves numerous, 30-70 cm long, up to 5 cm wide at the base, acuminate, involute-subulate towards the apex; inflorescence generally digitate, sometimes simple; floral spikes complanate, with long infertile bases; floral bracts imbricate, pointed, length commonly exceeding the sepals; petals linear, up to 6 cm capsule acuminate, 4 cm.