Can someone help me identify this coral?

[lalala]

I’m a total newbie and received a few coral frags for free when buying my clownfish from my lfs. I already posted on another site and was told it was radianthus malu, do you agree? If so, I think it was probably given to me as a mistake as it was attached to a piece of rock with a Kenya tree.

 

[Mr. Mojo Rising]

To me it looks like a type of mushroom.