Sawamura thought that α-bergamoten could play an important role in the fragrance of Rangpur essential oil. And its interesting to see how our Portuguese-speaking world likes the taste of rangpur or Limão galego as it is known here which plays the role of a lemon or and lime (also rich in α-bergamotene). To give another reference there is some in hops. 
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The aroma of the essential oil extracted from this unsuspecting fruit is unique, it is a has a heady citrus spark, with a warm floral ginger spice. 
 
 
The Rangpur lime is most recognised from being one of the main botanicals and the name of a Tanqueray gin.