Quote Originally Posted by Ram_Puppy
I am not so much doubting him as trying to understand why suck a different growth form would even be considered in the same species.
I believe the 'button' polyps many people call playthoa are actually in the protopalythoa genus. The distinguishing factor all palythoa have is the thick mat between polyps.

The best synopsis I found on the difference in 'zoanthid' type colonial corals is here:

http://www.advancedaquarist.com/issu...003/invert.htm