RHAMNACEÆ.
Buckthorn (Rhamnus Catharticus L.) and (R. Frangula L.). The berries of both species are toxic and purgative, but both are uncommon and rarely eaten by stock.
Toxic Principle. The berries and bark contain the glucosides Frangulin (C21H20O9) and Rhamnetin (C16H12O7).
Symptoms. The berries are purgative, and there is some danger from large quantities, which may induce superpurgation. The leaves are astringent and may arrest milk secretion (Cornevin). Müller states that the inflammation of the stomach and intestines may terminate fatally.
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