arytaenoideae

Arytaenoideae is a subfamily of the family Fabaceae, which includes legumes. It is characterized by its distinctive flowers, which are typically zygomorphic and have a unique structure. The flowers are usually hermaphroditic, with a standard petal that is fused to the keel petal, forming a structure known as the vexillum. The vexillum is often brightly colored and is used for pollination. The subfamily is found in tropical and subtropical regions, with a few species extending into temperate areas. The most well-known genus in this subfamily is Inga, which includes many economically important species, such as Inga edulis, the source of the popular food ingredient guar gum. Other notable genera include Pterogyne and Hymenaea. The subfamily is of significant ecological and economic importance, providing food, timber, and other resources to many communities.