A total 245 genera and 334 plant species were recorded by David Prain in 1903. [20] While most of the mangroves in other parts of the world are characterised by members of the Rhizophoraceae , Avicenneaceae or Combretaceae , the mangroves of Bangladesh are dominated by the Malvaceae and Euphorbiaceae . [9] Dominant flora includes: The Sundarbans flora is characterised by the abundance of sundari ( Heritiera fomes ), gewa ( Excoecaria agallocha ), goran ( Ceriops decandra ) and keora ( Sonneratia apetala ) all of which occur prominently throughout the area. The characteristic tree of the forest is the sundari ( Heritiera littoralis ), from which the name of the forest had probably been derived. It yields a hard wood, used for building houses and making boats, furniture and other things. New forest accretions is often conspicuously dominated by keora ( Sonneratia apetala ) and tidal forests. It is an indicator spe...
The Sundarbans mangrove forest, one of the largest such forests in the world (140,000 ha), lies on the delta of the Ganges, Brahmaputra and Meghna rivers on the Bay of Bengal. It is adjacent to the border of India’s Sundarbans World Heritage site inscribed in 1987. The site is intersected by a complex network of tidal waterways, mudflats and small islands of salt-tolerant mangrove forests, and presents an excellent example of ongoing ecological processes. The area is known for its wide range of fauna, including 260 bird species, the Bengal tiger and other threatened species such as the estuarine crocodile and the Indian python. 
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