THE FLOWER AND ITS FLORAL PARTS
A complete flower has flower parts arranged in four concentric circles around a floral axis. Each circle (known as a whorl) has a set number of parts for a species. The outer two, non-reproductive whorls are called the perianth. The two inner whorls are the reproductive parts. The photo shows a section through the flower of a Wild Cherry. Note that incomplete flowers have one or more of the flower parts missing. To learn more about these flowers click HERE. From the outside towards the centre the flower parts are:-
2. The petals, collectively known as the corolla, attract pollinators and provide landing sites for them.
3. The stamens (male Androecium) – each one consists of a filament supporting an anther which produces and releases pollen grains.
4. The carpels (female Gynoecium) – each one consists of an ovary with ovules, a style and a stigma on which pollen grains are received. The ovary becomes a fruit and the ovules become seeds. A flower may have one or more carpels.
This simplified floral diagram shows a flower with only 5 stamens and formula K5 C5 A5 G1.