Petiole is correct Jorick. *N. sanguinea doesn't have a defined petiole. *The leaves are strap like.
I saw your thread in the ID area... Doesn't look like N. fusca at least the typical kind..
Why not just email the photos to the company and see what they say?
At this point my best guess would guess some sort of N. maxima or maxima hybrid? I wouldn't venture to stick a tag on it though until it is much older or the company can give a positive ID.