Rhamnus
  鼠李屬
  Rham·nus /ˈræmnəs/ 名詞
  Rham·nus n.  Bot. A genus of shrubs and small trees; buckthorn. The California Rhamnus Purshianus and the European Rhamnus catharticus are used in medicine. The latter is used for hedges.
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  Buck·thorn n. Bot. A genus (Rhamnus) of shrubs or trees. The shorter branches of some species terminate in long spines or thorns. See Rhamnus.
  Sea buckthorn, a plant of the genus Hippophaë.
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  Rhamnus
       n : type genus of the Rhamnaceae: buckthorns [syn: genus
           Rhamnus]