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"[Plin. Nat. 27.73.] - THE LYCAPSOS: TWO REMEDIES.
The lycapsos has longer and thicker leaves than those of the lettuce, and a long, hairy stem, with numerous offshoots a cubit in length; the flower is diminutive, and of a purple colour; it grows in champaign localities. In combination with barleymeal, it is used as an application for erysipelas: the juice of it, mixed with warm water, is employed as a sudorific, in fevers."
(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.)