The flower-heads of Matricaria Chamomilla.

Characters. - About three-fourths of an inch (18 millimetres) broad, composed of a flattish, imbricate involucre, a conical, hollow, naked receptacle, about fifteen white, ligulate, reflexed ray-flowers, and numerous yellow, tubular, perfect flowers without pappus.

Action and Uses. - Strongly aromatic, bitter, carminative, and anthelmintic. It is generally used as an infusion or decoction like chamomile.