Structure of Flower

1. Structure
1. The reproductive structure of some seed-bearing plants, characteristically having either specialized male or female organs or both male and female organs, such as stamens and a pistil, enclosed in an outer envelope of petals and sepals.
2. Such a structure having showy or colorful parts; a blossom.
2. A plant that is cultivated or appreciated for its blossoms.
3. The condition or a time of having developed flowers: The azaleas were in full flower.
4. Something, such as an ornament or a figure of speech, that resembles a flower in shape, fineness, or attractiveness.
5. The period of highest development; the peak. See synonyms at bloom1.
6. The highest example or best representative: the flower of our generation.
7. A natural development or outgrowth: “His attitude was simply a flower of his general good nature” (Henry James).
8. flowers Chemistry. A fine powder produced by condensation or sublimation of a compound.

Flower

A higher plant's sexual apparatus in the aggregate, including the parts that produce sex cells and closely associated attractive and protective parts (Fig. 1). “Flower” as used in this article will be limited, as is usual, to the angiosperms, plants with enclosed seeds and the unique reproductive process called double fertilization. In its most familiar form a flower is made up of four kinds of units arranged concentrically. The green sepals (collectively termed the calyx) are outermost, showy petals (the corolla) next, then the pollen-bearing units (stamens, androecium), and finally the centrally placed seed-bearing units (carpels, gynoecium). This is the “complete” flower of early botanists, but it is only one of an almost overwhelming array of floral forms. One or more kinds of units may be lacking or hard to recognize depending on the species, and evolutionary modification has been so great in some groups of angiosperms that a flower cluster (inflorescence) can took like a single flower.