#bitter_orange_tree__sour_orange__Seville_orange__bitter_orange__bigarade__marmalade_orange__marmaladeorange__Citrus_aurantium  any of various common orange trees yielding sour or bitter fruit; used as grafting stock
  supertype:  orange_tree__orange  any citrus tree bearing oranges
  part:  bitter_orange__Seville_orange__sour_orange  highly acidic orange used especially in marmalade

No statement uses or specializes bitter_orange_tree; click here to add one.