Linum Catharticum. Linum catharticum. Purging-flax. N. O. Linaceae. Tincture of whole plant.   Clinical.-Amenorrhoea. Bronchitis. Cough. Diarrhoea. Haemorrhoids. Laryngitis. Rheumatism.   Characteristics.-The proving of L. cath. (by Stokes and Galston)