Analysis of information sources in references of the Wikipedia article "Sundarbans" in English language version.
On newly formed islands, flooded by every tide, Sonneratia usually springs up first, followed by Avicennia and the palm Nipa fruticans. As the ground rises other trees make their appearance, the most prevalent, though one of the later species to appear, being Exaecaria Agallocha. As the level rises by accretion, and the land is only occasionally flooded by the tide, the sundri makes its appearance.
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