Quercus Alba

White-oak Bark

The bark of Quercus alba Linne (Nat. Ord. Cupuliferae).

Quercus Tinctoria

Black-oak bark. (Not official.) Écorce de chine, Fr.; Eichenrinde, Ger.

Decoctum Quercus Albae

Decoction of white oak. (Not official.) (oz j—Oj-) Dose, oz ss— oz j.

Composition

Quercitrin or quercitric acid, tannic acid, etc.