The Shiranui Tangerine is a hybrid between a Ponkan tangerine and a Kiyomi tangor, that was created in Japan. Later it was given a name Decopon. In the United States it was trademarked as Sumo Citrus® in 2011. It was favored by american consumers for its bright, sweet taste, seedless flesh, and easy-to-peel nature. 
 
Taste: The flesh has a firm but soft and succulent consistency, the flavor is rich, refreshing, fruity, balanced sweet and tangy.
Tree size: 10 - 15 ft tall
Fruit size: Large (8 - 10 cm in diameter)
Seeds per fruit: Seedless
Season: January - April
Zones: 9 - 11