What is vexillary astevation means

1.	What is vexillary astevation means
Answer» Vexillary aestivation is the special arrangement where one large petal covers the other smaller petals. ... The two innermost, boat-shaped petals are called keels in this aestivation. The plants of Papilionaceae or legume family exhibit the ideal examples of vexillary aestivation.

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