Leafless herbs with scaly scapes or stem. Flowers 1-few, large,
bracteate, solitary or in corymbose inflorescence. Calyx with spathaceous
sepals, tubular below but split near to the apex. Corolla subequally 5-lobed,
petals united, tubular at the base with broad libs. Stamens 4, didynamous,
anther cells unequal, one fertile and other sterile with basal spur. Ovary
1-celled, ovules many, style single, slender, little curved at the terminal end
with obscurely large peltate stigmas. Capsules partially 2-valved, with
numerous pitted or reticulate seeds.