The Parent Species Citron Citrus medica Mandarin, tangerine Citrus reticulata Pummelo Citrus grandis Their Offspring Sour orange Citrus aurantium Sweet Citrus sinensis, pummelo x orange mandarin(?) Citrus paradisi, pummelo x Grapefruit sweet orange Sour lime Citrus aurantifolia Persian/Tahiti Citrus latifolia, sour lime x lime citron(?) Citrus limon, citron x sour lime x Lemon pummelo(?) Meyer Citrus limon, lemon x mandarin or lemon sweet orange? Modern Hybrids Citrus x tangelo, tangerine x Tangelo grapefruit Citrus x nobilis, tangerine x sweet Tangor orange Common or juice oranges have a smooth blossom end, generally contain seeds, and have a more adherent skin than navel oranges Commercial orange juice is made from juice varieties with little tendency to develop limonin bitterness The mild flavor of the juice is usually augmented by the addition of peel oils Blood oranges have been grown in the southern Mediterranean at least since the 18th century, and may have originated there or in China They’re now the major type of orange grown in Italy Blood oranges owe the deep maroon color of their juice to anthocyanin pigments, which develop only when night temperatures are low, in the Mediterranean ... limonin bitterness The mild flavor of the juice is usually augmented by the addition of peel oils Blood oranges have been grown in the southern Mediterranean at least since the 18th century, and may have originated there or in... century, and may have originated there or in China They’re now the major type of orange grown in Italy Blood oranges owe the deep maroon color of their juice to anthocyanin pigments, which develop only when night... grapefruit Citrus x nobilis, tangerine x sweet Tangor orange Common or juice oranges have a smooth blossom end, generally contain seeds, and have a more adherent skin than navel oranges Commercial