Brassicaceae Aestivation:

In Brassicaceae, the aestivation refers to the arrangement of petals in a flower bud before it opens. The most common type of aestivation in Brassicaceae is valvate, where the petals slightly overlap but do not completely cover each other. This valvate aestivation is characteristic of many species in this family.

Fruit and Seed:

- Fruit: In Brassicaceae, the fruit is typically a dry dehiscent capsule known as a silique or silicle. These fruits are long and narrow, with two distinct chambers separated by a thin septum. When mature, the silique or silicle splits open along the septum, releasing the seeds inside.

- Seed: The seeds of Brassicaceae are small, round to oval-shaped, and can vary in color. They are often produced in large numbers within the dehiscent fruit. The seeds have a hard seed coat that protects the embryo inside. Some species have specialized structures called elaiosomes, which attract ants for seed dispersal.

Overall, the Brassicaceae family exhibits valvate aestivation in their flowers and produces dry dehiscent capsules as fruits, containing small, rounded seeds with a hard seed coat.