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Pronunciation: ram'nus

Definition: A genus of shrubs and trees (family Rhamnaceae). The bark and berries of Rhamnus cathartica are cathartic; Rhamnus frangula is the source of frangula; Rhamnus purshiana is the source of cascara sagrada.

[G. rhamnos]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.