The grapefruit is a subtropical citrus tree famous for its fruit with delicate taste varying from sour to semi-sweet. According to recent researches, grapefruit appeared as a result of natural crossing between two species – sweet orange and shaddock (known as pomelo). The hybrid was first discovered in Barbados and documented by the Welsh researcher Rev. Griffith Hughes in 1750 who was exploring and depicting specimens of Barbados at the time. Curiously, but its current name the grapefruit got only in the 19th century and before the 19th century people had called it "Forbidden Fruit" or "Shaddock" or even "Shattuck".