57 Sweet orange Citrus sinensis The orange (specifically, the sweet orange) is the fruit of the citrus species Citrus × sinensis in the family Rutaceae.The fruit of the Citrus sinensis is considered a sweet orange, whereas the fruit of the Citrus aurantium is considered a bitter orange. The orange is a hybrid, possibly between pomelo (Citrus maxima) and mandarin (Citrus reticulata), which has been cultivated since ancient times. 28889 Sweet_orange 57.jpg image/jpeg 110752 2012-04-20T09:36:15Z 60 Fruits Citrus Type 1 2011-02-09T00:37:18Z 2019-05-14T18:04:15Z false specific 2711 true FOOD00057