Thanks for your responses and very detailed explanations.
(the 2 pdf's that Gabe gave, especially the 2nd ,are very informative)
I can understand the difficulty of ID'ing a banana tree, and of course i don't expect to do it by just looking at a photo (which anyway may be confusing enough: photo by photo is different, leaving apart different conditions of light, distance, camera quality etc at shot time).
But if for example all genuine FHIA-01's have the same exact flower, i still want to have a good photo of it for refference and examination.
For example the first photo at my post (it is the photo of Jarred's contest) tells me that i don't have a Goldfinger because none of my flowers gets even close to be the same!
Personaly i find it very difficult to see big differences by just looking bananas of same size, and i want to try flowers. Ok, i can see the difference between my D.Red , SH-3008 and the others, its obvious.
Of course for some bananas, another sure way of ID'ing i think it must be the fruit itself: Pitogo, Rhinohorn, Praying Hands, Red, Blue Burmese etc i understand that must be easy to distinguish.
How about fruit taste? Is it a criterion of ID'ing? If yes, then we can ID Ice Cream, Manzano and others (this safely can be a blind test
)