Java16

I heard it was the musa ivory or something like that but I'm not sure

MediaHound

That which has not yet been discovered

Seriously, though.
Check out this one
All-red thai banana slowly making its way into the US

Red Thai Banana



From the ebay listing where it was sold:
"This is one of the rarest bananas on today's market. it comes from Thailand, where it is considered a most rare and desireable plant. This banana is not as tall a grower as some, and usually matures around 7-9 feet. (we have never seen the fruit, but this beauty is grown soley for ornamental value). It is cold sensitive and would need winter protection outside of Zone 9B. Here in the USA, very few collectors have managed to get this plant, and then, only at very high prices.

This beautiful plant produces leaves that emerge a pale green with some red, and, as they mature become either solid red, or about 98% red. Amazing! I have attached a picture of a more mature plant, taken in Thailand at the nursery from where this plant was purchased. You can easily see why this plant is in such high demand!

The actual plant for auction is also pictured as a shot of the whole plant, and a close-up of one of its older leaves that has become solid red. The actual plant for auction is 11" tall measured from the soil line, and, she is starting to take off with the summer heat. "

This last one on ebay went for $460 - the seller, size123, is a member here.
All-red thai banana slowly making its way into the US

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tropicalkid

I didn't know the seller was a member here

tropicalkid

Those are rare, but I would vote for either Musa ingens, or Musa jackeyi. This last one is considered an endangered species (so far I've read on inibap), so you could get into a bit of trouble if you try to remove one of those from it's habitat.

Carlos

PaulOdin

Sounds like a good choice for tissue culturing.

Gabe15

There are tons of rare bananas, but the rarest are all wild species really, there are some mutant one of a kind sports of edibles though. But some of the newer wild species that are being discovered are extremely rare, often being native to very small specific regions and no where else. Musa azizii, Musa voonii and Musa bauensis are among those.

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Growing bananas in Colorado, Washington, Hawaii since 2004. Commercial banana farmer, 200+ varieties.

bigdog

You could be thinking of musa 'Indonesian Ivory', a variegated banana. I'm really not sure of the origins of this plant, but supposedly the fruit is edible and pretty sweet. The one plant that I've seen wasn't anything to write home about though.