Warner WetlandsWalk by Dr. Quentin Carpenter, Senior Lecturer in the Gaylord Nelson Institute for Environmental Studies at UW-Madison / 23Bulrush by Marilyn Sallee 6/12/2011 click on small image to see larger one

Bulrush in the sedge family (Cyperaceae) has a distinctly three-edged leaf. If it was an equilateral triangle, then Scirpus fluviatilus; if only had a keel, then Sparganium