An erect, branching annual herb, up to 1.5 m in height, sometimes grown as a winter ornamental. Leaves oblong, 6-20 cm long (excluding petiole), broad ternate or pinnate: leaflets lanceolate, obtuse to acute; flowers white in loose compound umbels; fruits oblong, 1.5-2.0 mm long and 1 mm or less broad.
Herb Effects
Induces photosensitization (fruit); Contraceptive, diuretic and tonic (Seed)
In leukoderma and psoriasis (plant decoction); in asthma and angina (Seed infusion); in toothache (Seed decoction)
Contraindication
The sap may bring about a skin rash or irritation that can be very serious and painful. The photoactive compounds from Ammi can cause blistering to normal skin when exposed to the sun.
Reference
Chandel et al., Biodiversity in Medicinal and Aromatic Plants in India.
Singab AN. Acetylated flavonol triglycosides from Ammi majus L. Phytochemistry 1998 Dec;49(7):2177-80.