"[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.)

"[Plin. Nat. 25.30.] - CENTAURION OR CHIRONION: TWENTY REMEDIES.
Centaury, it is said, effected a cure for Chiron, on the occasion when, while handling the arms of Hercules, his guest, he let one of the arrows fall upon his foot: hence it is that by some it is called “chironion.” The leaves of it are large and oblong, serrated at the edge, and growing in thick tufts from the root upwards. The stems, some three cubits in height and jointed, bear heads resembling those of the poppy. The root is large and spreading, of a reddish colour, tender and brittle, a couple of cubits in length, and full of a bitter juice, somewhat inclining to sweet.
This plant grows in rich soils upon declivities; the best in quality being that of Arcadia, Elis, Messenia, Mount Pholoë, and Mount Lycæus: it grows also upon the Alps, and in numerous other localities, and in Lycia they prepare a lycium from it. So remarkable are its properties for closing wounds, that pieces of meat even, it is said, are soldered together, when boiled with it. The root is the only part in use, being administered in doses of two drachmæ in the several cases hereafter mentioned. If, however, the patient is suffering from fever, it should be bruised and taken in water, wine being used in other cases. A decoction of the root is equally useful for all the same purposes.”
(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.)