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These include flowers that are usually radially symmetric and petals that are free. The gynoecium (female reproductive part) generally consists of two carpels (ovary, style and stigma) that are free, at least toward the apex (partially fused bicarpellate gynoecium) and possess a hypanthium (cup shaped basal floral tube).
In some plants such as Narcissus, the lower part of the petals or tepals are fused to form a floral cup above the ovary, and from which the petals proper extend. [ 4 ] [ 5 ] [ 6 ] A petal often consists of two parts: the upper broader part, similar to a leaf blade, also called the blade; and the lower narrower part, similar to a leaf petiole ...
Claw – a noticeably narrowed or attenuated organ base, typically a petal; e.g. Viola. Connate – when the same parts of a flower are fused to each other, petals in a gamopetalous flower; e.g. Petunia. Corolla – the whorl of petals of a flower. Corona – an additional structure between the petals and the stamens.
The petals of buttercups are often highly lustrous, especially in yellow species, owing to a special coloration mechanism: the petal's upper surface is very smooth causing a mirror-like reflection. [ 10 ] [ 11 ] The flash aids in attracting pollinating insects and temperature regulation of the flower's reproductive organs.
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Having separate petal s, not fused (sympetalous). apophyllous Perianth or other segments free, not united. Compare symphyllous, gamophyllous, and polyphyllous. apophysis 1. The external part of a cone scale. 2. An outgrowth of an organ or an enlargement of a stem. appendage
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A single, large, upper petal is known as the banner (also vexillum or standard petal). The semi-cylindrical base of the banner embraces and compresses two equal and smaller lateral wings (or alae). The wings in turn enclose a pair of small keel petals, that are situated somewhat lower than the wings, but are interior to them. [1]