Hmmmm, are the leaves papery thin or do they have a bit of thickness to them?
If it's Pennisetum then they will be really thin and sharp on the edges like most grasses. You know how you can get a paper-cut style injury from a blade of grass if you pull on it...that's the feel that I mean.
Also, Pennisetum usually has long, tapering blades that have very sharply pointed ends.
This one is quite a challenge!
