"[Plin. Nat. 24.54.] - THE RHUS OR SUMACH-TREE; TWO VARIETIES OF IT: EIGHT REMEDIES. STOMATICE.
Nor yet has the tree called “rhus” any Latin name, although it is employed in numerous ways. Under this name are comprehended a wild plant, with leaves like those of myrtle, and a short stem, which is good as an expellent of tapeworm; and the shrub which is known as the “currier’s plant,” of a reddish colour, a cubit in height, and about the thickness of one’s finger, the leaves of which are dried and used, like pomegranate rind, for curing leather.
Medical men also employ the leaves of these plants for the treatment of contusions, and for the cure of cœliac affections, and of ulcers of the rectum and phagedænic sores; for all which, purposes they are pounded with honey and applied with vinegar. A decoction of them is injected for suppurations of the ears. With the branches, boiled, a stomatice is also made, which is used for the same purposes as that prepared from mulberries; it is more efficacious, however, mixed with alum. This preparation is applied also to reduce the swelling in dropsy.”
(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. 24.55.] - RHUS ERYTHROS: NINE REMEDIES.
Rhus erythros is the name given to the seed of this shrub. It possesses properties of an astringent and cooling nature, and is used as a seasoning for provisions, in place of salt. It has a laxative effect, and, used in conjunction with silphium, it gives a finer flavour to meat of all kinds. Mixed with honey, it is curative of running ulcers, pimples on the tongue, contusions, bruises, and excoriations. It causes ulcers of the head to cicatrize with the greatest rapidity; and taken with the food, it arrests excessive menstruation.”
(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.)