"[Plin. Nat. 24.46.] - THE ALDER: ONE REMEDY.
The leaves of the alder, steeped in boiling water, are an undoubted remedy for tumours.”
(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.)