"[Plin. Nat. 24.85.] - THE CHAMÆLEUCE, FARFARUM, OR FARFUGIUM: ONE REMEDY.
The chamæleuce is known among us as the “farfarum” or “farfugium:” it grows on the banks of rivers, and has a leaf like that of the poplar, only larger. The root of it is burnt upon cypress charcoal, and, by the aid of a funnel, the smoke inhaled, in cases of inveterate cough.”
(The Natural History. Pliny the Elder. John Bostock, M.D., F.R.S. H.T. Riley, Esq., B.A. London. Taylor and Francis, Red Lion Court, Fleet Street. 1855.)