Do I really have this many dendro's??? (ID pics)

[AquaKnight]

I'm back home over break from school, and looking into my Dad's tank, it really looks like he has some Dendrophyllia's in there? They are all clustered together on a filter clam I think. They all came on the LR we got from a LFS. Anyway, here are some pics for ID purposes. Please overlook those darn pest anems.

 

[ViPeR_930]

Those are florida hidden cup corals.

 

[AquaKnight]

Phyllangia americana?

I thought they were a bit small, any info out there? I just found their scientific names.