The graceful cattail is exactly that.  Graceful as the foliage arches and sways gracefully in the breeze.  Its foliage is narrow, from 1/2 inch to 2 inches wide.  It height is 4-6 feet and grows in sun to part shade in moist soil or water up to 12 inches deep.  It is hardy in Zones 3-11.   They overwinter well in cooler water and withstand freezing temperatures. They will tolerate water over their crown.  Another thing about cattails is they can be a source of food.  The rootstock can be ground into flour, and the new shoots may be boiled and eaten as a vegetable. 

A graceful cattail's catkins are very thin and can be used in floral arrangements and are quite attractive.