I have different colors of monti caps (3 currently - orange, brown/purple, green/purple). Some grow flat, while others swirl. For the ones that do swirl, when I frag them, they also swirl. For the ones that grow flat, when I frag them, they're also flat. I'm not sure if this is always the case, but based on my limited experience, this is what I've noticed. Perhaps someone with more experience with these corals can chime in.