Leaves usually bipinnately compound, alternate
Flowers bisexual, actinomorphic, in tight clusters
Fruit a legume
40 genera, 2000 species, mostly tropical and subtropical, in dry regions
Prosopis - mesquite
Albizia - mimosa
Acacia
Economic importance: gum acacia, some timber, scents, charcoal from mesquite
Diagnostic characteristics: bipinnate leaves, stamens 10-many, extending beyond corolla, flowers in tight clusters
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