From 100 to 150 species in the tropics and subtopics, deciduous shrubs and trees, generally fast growing, and occasionally with thorns.  Leaves are compound, bipinnate, with numerous leaflets.  Mostly native to old world tropics.  A. julibrissin is the hardiest species and very common in the more mild temperate climates.
Albizia: after Filipppo degli Albizzia, a Florentine nobleman who introduced this genus into cultivation in Tuscany.

Fabaceae, Leguminosa