Step 1: Understanding the Concept:
The Sundarbans, spanning India and Bangladesh, is the largest contiguous halophytic mangrove forest in the world. Its name is linked to its dominant tree species.
Step 2: Detailed Explanation:
- The name 'Sundarban' translates literally to "beautiful forest."
- It is named after the Sundari tree ({Heritiera fomes), a dominant, large mangrove tree species belonging to the family Malvaceae.
- This species produces high-quality, durable timber and is adapted to the brackish waters of the delta.
- Rhizophora mangle, Avicennia germinans, and Laguncularia racemosa are red, black, and white mangrove species native to the Americas.
Step 3: Final Answer:
The name Sundarban is derived from the mangrove tree species Heritiera fomes.