Tangelo

A tangelo is a cross between a tangerine and a pomelo or grapefruit. Because there are few varieties of citrus fruits, tangelos are among the relatively few modern improvements in citrus. The first deliberate hybrid tangelos were bred in Florida by W. T. Swingle of the United States Department of Agriculture (USDA) at Eustis, Florida, in 1897. Swindle eventually developed the Orlando variety still in wide cultivation, released in 1911. The Jamaican Ugli was a chance hybrid tree discovered by G. G. R. Sharp in a pasture around 1917. Sharp kept selecting branches whose fruit had fewer seeds and grafting them until he had enough trees on his estate to being exporting in the mid-1930s. (Almost all commercial citrus fruits are grafted.)