In French literature this cultivar was referred to as the Indo-Chinese or Cambodian mandarin. The group of “King” mandarins is thought to have originated in Indochina, and then spread north to Japan and south to Malaysia. These mandarins are similar to oranges in appearance, which suggests that “King” mandarins may be a hybrid of the two, and therefore a natural tangor. The fruits are large with flattened ends. The very thick rind varies from smooth to rough and knobbly, and adheres to the fruit. When ripe the fruit is yellowish-orange to orange in colour.