Common name: Wild tamarind Subabul
Botanical name: Leucaena leucocephala
Family: Fabaceae (pea family)
Bengali: সুবাবূল
(http://t3.gstatic.com/images?q=tbn:ANd9GcRfe9E5D9qiSBy8b1ad1WVdBYlrrxjh8948eD3ywIaIbex6lINdQA)
It is a low scrubby tree of tropical and subtropical North America having white flowers tinged with yellow resembling mimosa and long flattened pods. The leaves are like that of tamarind. It is a thornless shrubby bush or tree often only to 6-8ft but occasionally to 30-60ft. Grows very well in arid tropical climates and can become a pest species in such climates. Grows best under full sun, needs little water or care once established. Very fast grower. Grows in practically any soil type. The tree has a huge wealth of uses, and is an extremely fast-growing, but care should be taken in some regions to control growth as the seeds are easily dispersed by birds and grazing cattle and the tree has the potential to become a pest. It is grown for fodder, but unless severely grazed or controlled, it spreads rampantly throughout adjacent areas.