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A Duncan Grapefruit is almost round and has a smooth, light yellow rind. The flesh is very pale yellow, juicy, and very seedy. The flavor is considered by many to be superior to similar seedless grapefruit varieties. In flavor, Duncan has remained the standard of grapefruit excellence in Florida.  However, Duncan grapefruit are no longer grown commercially because of the excessive seed count.  White Seedless Grapefruit are available mid-Dec through mid_Jan and are close to the flavor of Duncan.