Zygomorphic flower | plant anatomy | Britannica (original) (raw)

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description

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  In flower: Form and types
  …and snapdragons, is irregular or zygomorphic.
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floral symmetry

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  In symmetry: Symmetry in flowers
  …two equal parts, it is zygomorphic, or bilaterally symmetrical, as in the snapdragon, orchid, and sweet pea.
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  In angiosperm: The corolla
  … and is called irregular or zygomorphic (e.g., violets, Viola; Violaceae).
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Papilionoideae

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  In Fabales: Classification of Fabaceae
  …the unique bilaterally symmetric (zygomorphic) flowers that especially characterize the group, so that thousands of species can be recognized as a member of Papilionoideae at a glance. The Lathyrus odoratus (sweet pea) flower provides an example. It has a large petal at the top, called the banner, or standard,…
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