*Leaves 1(-2) basal and 1 cauline, ovate to elliptical or lanceolate, 25-55 cm × 6-23 cm; petiole with sheath-like basal part.
*Inflorescence head-like, seemingly axillary to cauline leaf, subsessile, 4-6(-8) cm in diameter, consisting of many bracteate spikes.
*Flowers in pairs, zygomorphous, bisexual, white; sepals 3, free; corolla with narrow tube up to 13 mm long, lobes slightly shorter; stamen 1, anther with 1 fertile cell and 1 sterile, petaloid cell, staminodes 4.
*Fruit an oblong-ellipsoid capsule, about 1 cm long, hidden among the bracts, greyish-blue, 1-seeded.
*Seed ellipsoid, with red aril.