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"[Plin. Nat. 26.88.] - POLYCNEMON: ONE REMEDY.
Polycnemon is a plant which resembles cunila bubula; it has a seed like that of pennyroyal, a ligneous stem with numerous articulations, and odoriferous umbels, with a pleasant though pungent smell. This plant is chewed and applied to wounds inflicted with iron, the application being removed at the end of four days. Symphyton causes sores to cicatrize with the greatest rapidity; the same, too, with sideritis, which is applied in combination with honey. The seed and leaves of verbascum, boiled in wine and pounded, are used for the extraction of all foreign substances adhering to the body; and a similar use is made of leaves of mandragora mixed with polenta, and roots of cyclaminos with honey. Leaves of trixago, bruised in oil, are used for ulcers of a serpiginous nature more particularly, as also sea-weed bruised with honey. Betony, with the addition of salt, is employed for the cure of carcinomatous sores and inveterate blisters on the neck.”
(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.)