the anemone in the picture is Haddon's anemone = Stichodactyla haddoni
"maxi", "maxi mini" and "mini" = Stichodactyla tapetum
there's big differences between the species
edit:
FYI: there's an EXCELLENT and FREE anemone FAQ at the top of RC's Anemone/Clownfish Forum. It's better than much of the currently published books on anemones.
Haddon's anemone is as likely to eat an ocellaris clownfish as it is host one (it's an opportunistic fish eater) and maxi anemones don't host ANY clownfish. This is why it's good to reserach before purchase!
Additionally: many anemones collected for the trade simply die in captivity due to poor handling, shipping care etc.
Haddon's anemone is one species to be concerned about. Clownfish DO NOT need an anemone. They will "host" in almost anything... and a good, easy to keep alternative are Sarcophyton ("toadstool" soft corals).