as far as i noe, for euphyllia family, there's frogspawn, hammer and octopus
but octopus got split 2 types, one is bumps r quite big and looks very close to frogspawn but is not, the other type is bumps quite small which is wat some refer to as the true octo
paradivisa and divisa refers to the skeleton
true or false refers to the size of the bumps.
this is wat i noe
correct me if i'm wrong though