Description
Trees or shrubs.
Leaves of mature plants bipinnate;
Stipules spinescent;
Distribution
Africa present, America present, Asia present, Asia-Tropical, Australasia, Pantropical present
Pantropical; most diversified in Africa (c. 80 species) and America (more than 20 species); few in Asia (c. 10) and in Australia (3 or 4); in Malesia 3 species.
Cytology
Chromosomes 2n = 26, 52, 104 []; polyploidy frequent.