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Reference.org
Citrus × sinensis
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<p><i>Citrus</i> × <i>sinensis</i> (sometimes written <i>Citrus sinensis</i>), a hybrid between <a href="/facts/Pomelo/uxb80y7X">pomelo</a> (<i>Citrus maxima</i>) and <a href="/facts/Mandarin_orange/r1AVJlH1">mandarin</a> (<i>Citrus reticulata</i>), also known as the sweet oranges, is a commonly cultivated species of <a href="/facts/Orange_(fruit)/qQdDNeL4">orange</a> that includes <a href="/facts/Valencia_orange/RR4HNkUL">Valencia oranges</a>, <a href="/facts/Blood_orange/A59uTcQJ">blood oranges</a> and <a href="/facts/Navel_orange/qQdDNeL4">navel oranges</a>. </p>