Explain the vexillary and imbricate aestivation.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Solution:
Vexillary (Descending Imbricate) Aestivation:
- Specific type found in Fabaceae (pea family)
- 1 large standard (vexillum) petal overlaps 2 lateral wings (alae)
- Wings overlap 2 smallest keel (carina) petals
- Example: Pea, bean
Imbricate Aestivation:
- Margins of petals/sepals overlap irregularly without fixed pattern
- One margin of each petal overlaps the next while the other is overlapped
- Example: Cassia, gulmohar
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