Fabaceae, i.e. Leguminosae is the family of plant having legumes, peas group in them. This group is the third largest group and economically important family of flowering plants. In this group the following floral characteristics are observed.

The flower is bisexual and zygomorphic with superior ovary and diadelphous anther. The sepals are fused and show imbricate or valvate aestivation. Corolla with 5 petals show vexillary aestivation. Aestivation is the arrangement of the petals/sepals around the flower. In this pattern, the anterior petal is innermost and posterior petal is outermost and largest. There is large petal which has two lobes fused. There are two wings and one small keel or carina. This aestivation is also called descending imbricate.