Anybody recognize this one? I'm guessing one of the Sagittaria species, but it's a stiffer, tougher leaf than I'm used to seeing, almost like an Iris but way too narrow. Widest leaf is 5 mm. It was growing in strong flow in Quankey Creek, a fairly acid trib of Roanoke River southeast of Roanoke Rapids, NC. The part of the channel where it was growing probably has flow pretty much all the time except maybe in severe droughts.
Edited by gerald, 01 February 2010 - 02:08 PM.