"[Plin. Nat. 25.13.] - THE PANACES CHIRONION: FOUR REMEDIES.
A third kind of panaces is surnamed “chironion,” from him who first discovered it. The leaf is similar to that of lapathum, except that it is larger and more hairy; the flower is of a golden colour, and the root diminutive. It grows in rich, unctuous soils. The flower of this plant is extremely efficacious; hence it is that it is more generally used than the kinds previously mentioned.”
(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.)