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An acrid, poisonous, crystallizable substance, obtained from some species of anemone.

An acrid, poisonous, crystallizable substance, obtained from some species of anemone.

A poisonous principle from pulsatilla.

A poisonous crystalline substance, C15H12O6, obtained from the leaves and flowers of several species of Anemone. It is volatile and has a burning, aromatic taste like that of pepper. It has been used in whooping-cough, bronchitis, and asthma.