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"[Plin. Nat. 26.22.] - TRIPOLIUM: THREE REMEDIES.
Tripolium is a plant found growing upon cliffs on the sea-shore against which the waves break, springing up, so to say, neither upon dry land nor in the sea. The leaves are like those of isatis, only thicker; the stem is a palm in height and divided at the extremity, and the root white, thick, and odoriferous, with a warm flavour; it is recommended for diseases of the liver, boiled with spelt. This plant is thought by some to be identical with polium, of which we have already spoken in the appropriate place.”
(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.)