Annual or perennial, terrestrial, aquatic or epiphytic herbs,
without true roots, bearing small complex bladder-like traps for capture and
digestion of planktons. Inflorescence racemose. Bracts varied, basifixed,
medifixed or variously produced below the point of attachment. Calyx 2-lobed.
Corolla bilabiate, yellow, various shades of violet or purple, white or rarely
blue or red. Stamens 2, inserted at base. Ovary globose or ovoid, stigmas
2-lipped. Capsules globose or ovoid. Seeds 1 to many, variously shaped and