Explanation

[image:5_image74.jpeg] $C_{1 + 2 + (2) -}5$ petals arranged freely as one larger, posterior petal called vexillum overlapping two smaller lateral petals called wings, the latter overlap a boat shaped structure called kell or carina, formed by two anterior petals fused lightly on anterior side. Aestivation is called as vexillary imbricate, papilonaceous (butterfly shaped). $A_{(9) + 1} - 10$, diadelphous anthers dehiscing longitudinally. ${\underline{G}}_{(1)}$ Monocarpellary, superior ovary, unilocular, marginal placentation.