Botanical name: 

The bark of the oak, Quercus alba, is strongly astringent and has ever been used in domestic medicine where an astringent material is applicable, as for example, in dysentery, hemorrhages, etc. In the form of a poultice, a decoction, and as a tincture it has a domestic record, probably in common with other species of oak in all countries. The medical profession has added little, if anything, to the domestic uses of the drug, as recorded by Rafinesque (535), Porcher (520), Cutler (178), and the early American dispensatories and works on materia medica.

The History of the Vegetable Drugs of the U.S.P., 1911, was written by John Uri Lloyd.