The American Materia Medica, Therapeutics and Pharmacognosy, 1919, was written by Finley Ellingwood, M.D. Hydrastis. Hydrastis canadensis. Gold and Sodium Chloride Phosphorus. Avena. Avena sativa. Coca. Erythroxylon coca. Kola. Cola acuminata. Book Navigation ‹ Division III. up Hydrastis. Hydrastis canadensis. ›