#genus_Rhamnus__Rhamnus  type genus of the Rhamnaceae: buckthorns
  supertype:  dicot_genus__dicotgenu__magnoliopsidgenu  genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
  member of:  family_Rhamnaceae
  member:  buckthorn.shrub  a shrub or shrubby tree of the genus Rhamnus; fruits are source of yellow dyes or pigments

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