Maybe it's "Champa Kala", another form of "Chini champa". "Chini Champa" grows at altitude and is said to be more stout. Champa Kala is typically grown in the lowlands and is said to grow very tall. Both have the famous sweet fruit and black stems.
With that beeing said, the second photo in the first post looks almost exactly like my musa "helens". Especially in leaf shape. I am guessing Chini Champa has something to do with it.
Erlend