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Soapberry Order |
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Main, Real, Two First-Leaves (Dicots) |
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Real, Two First-Leaves (Dicots) |
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Half Capsule Seed Division |
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Magnolia Division |
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Seed Plants |
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Multiple Spore Sub-Kingdom |
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Multicellular Land Plants |
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Cells with a Nucleus |
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The orange is a hybrid of ancient cultivated origin, possibly between pomelo (Citrus maxima) and mandarin (Citrus reticulata).
All citrus trees are of the single genus, Citrus, and remain largely interbreedable; that is, there is only one "superspecies" which includes grapefruits, lemons, limes, and oranges. Nevertheless, names have been given to the various members of the genus, oranges often being referred to as Citrus sinensis and Citrus aurantium. Fruits of all members of the genus Citrus are considered berries because they have many seeds, are fleshy, soft, and derive from a single ovary. An orange seed is called a pip. The white thread-like material attached to the inside of the peel is called pith.
Orange Tree
Orange Tree - January 05, 2010
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