Unknown plant growing rampantly

[wtamuboi]

Hi all,

Recently I have had a great deal of problems with this particular plant, and would very much like to know what it is. Every answer I've gotten so far has been proven wrong, and I really just want to know what I'm dealing with. Now when I say problems, I don't mean that the plant isn't doing well. On the contrary, the plant is far too successful.

Pictures are shown below. This doesn't show you the full plant, just one of the offshoots. The leaf texture and the way it browned seemed identical to Spathoglottis, though the base structure is not right. The flowers are very small and yellow, but the plant exceeds 2 meters in height. Someone suggested that it was a Carludovica, but it has no division to the leaves (and Carludovica is meant to have 2-5 divisions). Cast Iron plant was also thrown around, but this plant is near Aspidistra and it is obviously different.

Even if it isn't an orchid (which I doubt at this point), hopefully it's at least something that somebody has come across in the course of their adventures.