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irregular flower

irregular flower in Science
irregular flower
A flower in which one or more members of a whorl, or of several floral whorls, differ in form from other members. Irregular flowers, such as those of the violet or the pea, are often bilaterally symmetric. The pea has one large upper petal above, two free petals on the each side, and two petals fused together in a keel shape below. Compare regular flower.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Historical Examples
  • Study of an irregular flower to show adaptations for insect visitors.

    A Civic Biology George William Hunter
  • An irregular flower is generally distinguished by petals of unequal size or shape.

    The Plants of Michigan Henry Allan Gleason
  • Peloria, an abnormal return to regularity and symmetry in an irregular flower; commonest in Snapdragon.

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