I'm going to assume that plant is in a pot, right? Musa yunnanensis has basal hermaphrodite flowers, so you should have a nice little seed crop there. Great pictures! Have you grown this Musa outside? It is extremely cold hardy in my USDA zone 7a here in Knoxville, TN, and gets larger every year. I expect to see it flower one of these years. Here's what it looked like back in September of 2009:
Frank