what type of coral is this?

[TakeitEasy]

I bought a piece of live rock with a few corals on it from a local reefer but he wasn’t able to tell me what type of coral this was. He said it started growing on the rock.
I’d like to ID this coral in order to care for it correctly.

 

[tbrown]

Looks like a Green Leptoseris.

 

[encrustingacro]

Pavona. The coenosteum of Leptoseris forms “folds.”