There is no tree species known scientifically as "Ayan Tree." It's possible that this is a local or regional name for a specific tree.

To help you find the scientific name, please provide more information:

* Where is this tree found? (Specific region or country)

* What does it look like? (Leaf shape, bark texture, flower/fruit appearance)

* What are its uses? (Wood, medicinal, etc.)

With more details, we can try to identify the correct scientific name.