Large showy mostly epiphytic herbs. Leaves densely rosulate, often banded or mottled, entire. Inflorescence simple or compound, spikes usually distichous-flowered. Floral bracts conspicuous, enfolding or concealing the bases of the flowers. Flowers subsessile or on short pedicels. Sepals free. Petals nearly or quite free, ligulate, bearing one or two scales each. Stamens included or exserted. Ovary nearly or quite superior; style elongate. Ovules many, usually caudate. Seeds fusiform with a long straight basal coma.