585. TUSSILAGO.—COLTSFOOT, N.F. The herb of Tussila'go farfar'a Linné. Habitat: Europe, and Middle and Northern United States, along the banks of streams. Demulcent, popularly used in the treatment of coughs (hence the name, from tussis, cough). Its expectorant properties are not pronounced, however. Dose: 30 to 60 gr. (2 to 4 Gm.), in decoction.