It's hard to tell why they changed the name from Musa formosiana to Musa Basjoo 'Formosiana' since the two plants look nothing alike. The formosiana with it's really waxy pseudostem, with black dots looks alot more like Musa balbisiana, and that's what someone who didn't know the first thing about bananas pointed out when they were checking out the nanners at my place. I didn't get any pics of the overall leaf pics, but it looks basically like any other green edible banana at the stage it is at.

Here's a pic comparing the two basjoo's with regular on the right, and formosiana on the left.