ID please, grew on a piece of lace rock?

[Zerc]

This grew on a piece of dry lace rock i got at a pet store. it started as a couple polyps and now has like 15 as you can see in the picture. There is no color yet as I can tell, only white. It is the only one in my entire tank that I have ever seen, it has been there since around April. It is underneath the red hornet zoas in the picture.

 

[IPisces]

its some type of euphyllia. could be frogspawn or hammer. You will find out for sure when it gets bigger. great coral.

 

[Zerc]

Neat! I have a purple torch in my tank that has 3 heads, that would be neat if it was a little one of those. Thanks for the input!