This section is from the book "A Text Book Of Materia Medica, Being An Account Of The More Important Crude Drugs Of Vegetable And Animal Origin", by Henry G. Greenish. Also available from Amazon: A Text Book of Materia Medica : Being an Account of the More Important Crude Drugs of Vegetable and Animal Origin.
H. muticus, Linne, Egyptian henbane (Egypt, India); leaves entire or toothed, petiolate; calyx striated, pubescent; corolla yellow or nearly white; pyxis cylindrical not urn-shaped. The commercial drug is imported in large quantity from Egypt, often with a considerable proportion of stout, yellowish stalk; used as source of hyoscyamine (0.2 to 1.0 per cent.).