petal

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petal,

one of the four basic parts of a flowerflower,
name for the specialized part of a plant containing the reproductive organs, applied to angiosperms only. A flower may be thought of as a modified, short, compact branch bearing lateral appendages.
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, next innermost organ from the sepal. The whorl of petals is known collectively as the corolla [Lat.,=little crown]. The number of petals is usually constant within groups (e.g., five in the rose family), as are the numbers of the other organs. Identification by number is, however, complicated by various factors; the petals may be fused, inconspicuous, or entirely absent, in which case their role as the showy part of the flower is sometimes supplanted by modified leaves, the bracts, as in the dogwood and poinsettia, or by modified stamens, as in the canna and the lady's-slipper. Selective breeding can produce petallike stamens (e.g., in cultivated roses and geraniums) and so-called double flowers, i.e., varieties with more than the normal number of petals. Petals are usually brightly colored and often secrete perfume and nectar (in nectaries at the base of the petal) that attract insects and birds needed for cross-pollination. When fertilization has taken place the petals usually drop off; however, in some flowers they persist (see everlastingeverlasting
or immortelle
, names for numerous plants characterized by papery or chaffy flowers that retain their form and often their color when dried and are used for winter bouquets and decorations.
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). In general there are fewer petals and their fusion is greater as the evolutionary development increases. Radially symmetrical arrangement also gives way to bilateral symmetry or even asymmetry.

Petal

 

a leaflike member of the corolla in a flower, which is generally brightly colored. In sympetalous plants, the petals are grown together to some degree. The leaflets of simple corolliform perianths are sometimes erroneously called petals.

petal

[′ped·əl]
(botany)
One of the sterile, leaf-shaped flower parts that make up the corolla.

petal

One of the overlapping shingles or tiles in imbrication.

petal

any of the separate parts of the corolla of a flower: often brightly coloured
References in periodicals archive ?
As stamens abort, petaloid structures develop and tend to dominate the floral display (Fig.
This Combi also incorporates the latest Sidel technologies such as bottle lightweighting made possible with the new petaloid base design.
About 25% of the PET bottles manufactured have a petaloid design, developed by the Continental Can Co.
Helleborus) petals are absent and the sepals are petaloid which behave as petals (Damboldt & Zimmerman, 1965).
This versatile machine is designed for the supply of cylindrical and petaloid containers in sizes up to 110mm diameter, 340mm length and from 0.
A phylogenetic evaluation of a biosystematic framework: Brodiaea and related petaloid monocots (Themidaceae).
Amcor's design team at its Centre of Excellence in Brecht, Belgium had developed the Low Hybrid Base[TM], which combines the sleek, smoothness of a champagne base with the structural strength of the so-called petaloid base.
It is suitable for carbonated drinks because of the petaloid base.
One problem is that sepals and petals are not clearly differentiated, and the perianth organs are referred to as tepals, even if the inner ones are different from the outer ones and petaloid.
In the past, different interpretations have been given for the petaloid antesepalous scales.