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Longitudinal section of female flower of a squash showing pistil (=ovary+style+stigma), ovules, and petals. The petals and sepals are above the ovary; such a flower is said to have an inferior ovary, or the flower is said to be epigynous. Cross section of a tulip ovary
A floral diagram is a graphic representation of the structure of a flower. It shows the number of floral organs, their arrangement and fusion. Different parts of the flower are represented by their respective symbols. Floral diagrams are useful for flower identification or can help in understanding angiosperm evolution.
The sepals are drawn as white lunules, the petals as black or sometimes colored lunules. The stamens are symbolized by cross sections of the anther, and the gynoecium is represented in the center of the diagram by a cross section of the ovary. Usually the pieces of one whorl alternate with the pieces of the previous whorl.
Longitudinal section of carpellate flower of squash showing ovary, ovules, stigma, style, and petals. In flowering plants, the ovule (from Latin ovulum meaning small egg) is a complex structure born inside ovaries. The ovule initially consists of a stalked, integumented megasporangium (also called the nucellus).
Each plant produces either functionally male flowers or functionally female flowers. In Ilex aquifolium (see the illustration), the common European holly, both kinds of flower have four sepals and four white petals; male flowers have four stamens, female flowers usually have four non-functional reduced stamens and a four-celled ovary. [9]
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The disk floret is bisexual with female parts (one pistil containing one style, two stigmas, and an ovary with one ovule) and male parts (stamen, anthers, and filaments). Labeled parts are as follows: 1 – two stigmas, shown opened (if closed, they would appear as an extension of the style); 2 – style; 3 – five anthers fus...
Longitudinal section of a female flower of a squash plant (courgette), showing the ovary, ovules, pistil and petals Fruits are the mature ovary or ovaries of one or more flowers . They are found in three main anatomical categories: aggregate fruits , multiple fruits , and simple fruits .