Wyethia. Wyethia helenoides. Alarconia helenoides. Melarhiza inuloides. Poison Weed. N. O. Compositae. Tincture of the root.   Clinical.-Amenorrhoea. Asthma. Constipation. Cough. Debility. Diarrhoea. Dysmenorrhoea. Epiglottis, affections of. Fever. Haemorrhoids. Headache.