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Rhamnus |
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Rhamnus /Rham·nus/ (ram´nus) [L.] a genus of trees and shrubs often having a cathartic bark and fruit. R. purshia´na D.C. is the source of cascara sagrada. Rhamnus a genus of small trees in the family Rhamnaceae all of which contain glycosides from which anthraquinone, a purgative, can be prepared. Includes R. cathartica (buckthorn), R. frangula (Frangula alnus, alder buckthorn), R. purshiana (buckthorn). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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