Mimosoideae

Mimosoideae is a subfamily of the flowering plant family Fabaceae (or Leguminosae). It was traditionally described as one of three subfamilies, along with the Caesalpinioideae and the Papilionoideae. However, modern molecular phylogenetic work has shown that the group of plants traditionally described as the Mimosoideae is paraphyletic, and the group is now commonly divided between the Caesalpinioideae and the Faboideae.

Description

The Mimosoideae are typically trees and shrubs, with small, pinnately compound leaves. The flowers are actinomorphic (radially symmetrical), small, and borne in dense inflorescences. The flowers are often showy and fragrant to attract pollinators (usually insects). The stamens, which are often numerous to create a showy effect, are usually the most conspicuous part of the flower.

Taxonomy

The Mimosoideae were historically divided into four tribes: the Acacieae, the Ingeae, the Mimoseae, and the Mimozygantheae. However, this traditional classification has been completely revised in light of modern molecular phylogenetic studies.

Distribution and habitat

Members of the Mimosoideae are found worldwide, but they are most diverse in the tropics and subtropics. They are commonly found in a variety of habitats, including forests, grasslands, and deserts.

Uses

Many species of Mimosoideae have important uses for humans. Some, like the Acacia and Mimosa, are important sources of timber. Others, like the Leucaena leucocephala, are important in agroforestry, where they are used as windbreaks, for soil improvement, and as a source of fodder.

See also

• List of Fabaceae genera
• List of Mimosoideae genera

References

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