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Answer :- Aestivation is the arrangement of petals or sepals in a floral bud about the other participants of a similar whorl.
It is classified into five categories:
- A) Valvate Aestivation: When petals or sepals are organized in a whorl as well as just touch one another’s margins, like in Caltrops.
- B) Twisted Aestivation: -As seen in China rose, one appendage margin overlaps the next.
C)Imbricate Aestivation: The flower’s margin overlaps, but not in the same way as in Gulmohar.
- D) Vexillary Aestivation: -When 5 petals distinguish into a large standard vexillum or petal that overlaps 2 lateral petals named wings, which overlap the littlest anterior petals termed
