Ammi majus, commonly called bishop's weed, false bishop's weed, bullwort, greater ammi, lady's lace, false Queen Anne's lace, or laceflower, is a member of the carrot family Apiaceae. The seed is contraceptive, diuretic and tonic. An infusion is used to calm the digestive system, whilst it is also used in the treatment of asthma and angina. A decoction of the ground-up seed, eaten after intercourse, appears able to prevent implantation of the fertilized ovum in the uterus. This decoction is also used as a gargle in the treatment of tooth ache. The seed contains furanocoumarins (including bergapten), which stimulate pigment production in skin that is exposed to bright sunlight. The plant is widely cultivated in India for these furanocoumarins which are used in the treatment of vitiligo (piebald skin) and psoriasis.