1911 Encyclopædia Britannica/Shaddock

SHADDOCK (Citrus decumana), a tree allied to the orange and the lemon, presumably native to the Malay and Polynesian islands, but generally cultivated throughout the tropics. The leaves are like those of the orange, but downy on the under surface, as are also the young shoots. The flowers are large and white, and are succeeded by very large globose fruits like oranges, but paler in colour, and with a more pungent flavour. The name Shaddock is asserted to be that of a captain who introduced the tree to the West Indies. The fruit is also known under the name of grape-fruit, pommeloes, and “forbidden fruit.” Varieties occur with yellow and reddish pulp; and there are also pear-shaped varieties.