Posted: 11/02/2014 at 14:49
I didn't see it as a grass or any sort of monocot.
Seeing it in situ might be helpful, is it in deep water, a marginal or what.Does it float or rooted to the bottom, in deep or shallow water. Does it emerge from the water or entirely submerged? Did it flower last summer? What are the roots like? Are they all linked together like a spreading perennial or lots of individual plants.