Pongamia pinnata (L.) Pierre is a fast
growing medium-sized, nearly evergreen tree
species. It attains a height up to 25m, with straight
or crooked trunk up to 50 cm diameter (Allen and
Allen 1981). The crown is broad, spreading or
dropping branches with dense foliage. The species
is found in humid and sub-tropical environments.
It occurs naturally in lowland, near canals, rivers,
waste places, along the edges of mangrove forest
and tidal streams. In Bangladesh, it usually grows
on the sandy mud in the coastal districts and in the
fresh water swamp forests of the north-eastern
wetlands.