I already asked but in the beginning of the summer the plant was too little, and suppose it was difficult to recognize it. So let's try again:
the unknown banana when I planted it in the middle of may
and the same banana few days ago, 3 months latter.
Why its so important to me to identify it? Because of it's wintering: I must know does he have some chances to overwinter in 7a zone (at least his corm - well mulched or even with some heating - I just became in love in that plant, it grows from 2 feet in the first photo to 10 to 10 and more(to the top of the spear) for 3 months only, and seems very great and... "architectural"

Even regret that planted it there, so close to that peach, but HOW I to expect him to grow SO BIG??
Some additional information: in june I cut 2 of 4 pups he had, but unfortunately they haven't roots

I put him in water. One lives, but not the big one: he made from the part of older's corm I cut another one little(maybe 1 inch large) with two little pups and some roots, So I planted it and the new banana had already 2 new leaves, 2-3 inches big. Hope it will survive.
But the more serious problem is with the big plant. To the end of vegetation it will be at least with 7-9 feet pseudostem, with very hard and big underground corm and it will be practically impossible or very difficult to dig it and put in large pot to overwinter. Even that, I will try to do anything possible to save it - it looks just great, my first banana taller than 10 ft

So pls, let me know what kind is it. Will try to do some bigger photos this weekend when i go to my "rancho" there
If they are helpful, some older photos of the plant:
25th of june
11th july
And more: this plant have some hardiness: last winter he survived two periods of few days with temps between 35-45 F it that room where keep it, even in February grows a little.