This section is from the book "A Text-Book Of Pharmacology, Therapeutics And Materia Medica", by T. Lauder Brunton. Also available from Amazon: A text-book of pharmacology, therapeutics and materia medica.
. The rhizome and rootlets of Caulophyllum thalictroides.
Characters. - Rhizome about four inches (10 centimetres) long, and about one-fourth to two-fifths of an inch (6 to 10 millimetres) thick, bent; on the upper side, with broad, concave stem-scars and short, knotty branches; externally grey-brown, internally whitish, tough and woody. Eootlets numerous, matted, about four inches (10 centimetres) long, and one twenty-fifth of an inch (1 millimetre) thick, rather tough; nearly inodorous; taste sweetish, slightly bitter, and somewhat acrid.
Dose. - 1-5 gr. in infusion.