The various species of Ranunculus, or Buttercup, so common in this country, are chiefly remarkable for their acridity, proved by chewing a small portion of their leaves. Their action is emetic, and when bruised and applied to the skin, irritating, acting like a mustard-plaister, or blister. See Crowfoot. Their acridity arises from a volatile principle, which is destroyed by boiling, or even by drying. It is not fit to be taken inwardly, on account of its poisonous influence. The juice of most members of this genus of plants when applied to the skin acts as a rubefacient; in some cases it acts as a blister. The knowledge of this might prove very useful.
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This page and the rest of the encyclopedia of medicinal herbs was reproduced from old herbals written in the 1700 and 1800s. They are of historical interest to show the traditional uses of various herbs based on folk medicine and ancient wisdom. However the traditional uses for these herbs have not been confirmed by medical science and in some cases may actually be dangerous. Do not use the these herbs for any use, medicinal or otherwise, without first consulting a qualified doctor.
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