When the ovules get ready to grow, the flower prepares to bloom.

All about the ovules the delicate walls of the ovary shut tightly.

The white filaments of the stamens group themselves about it; you cannot see the ovary, they stand so close to it.

Their anther cells reach halfway up to the stigma, for the white stigma stands above the anthers. The anthers and the stigma are there for the sake of the ovules.

But this is not all.

A delicate corolla of bright colors surrounds the stamens and pistil. It holds them in its white tube, and spreads the bright border out wide for the bees to see and come to the help of the ovules.

But this is not all.

The green calyx wraps its sepals about the end of the corolla tube, and when the corolla falls the calyx covers nicely the ovary and helps it protect the ovules.