A member of Hamamelis, family; Hamamelidaceae, a genus of trees or shrubs which flower in late autumn after the leaves have fallen, especially H. virginiana, native to North America. An alcoholic solution of a substance extracted from the bark of H. virginiana and used as a medicinal lotion. Hamamelis has astringent properties and contains gallic acid, a bitter principle, and a trace of volatile oil. It is used in preparations for the symptomatic relief of haemorrhoids.
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