I found a WWW page that has some photos of aquatic plants and what looks to be tons of info (haven't had the time to browse it completely). It is the Center for Aquatic Plants. The URL is: http://aquat1.ifas.ufl.edu/ Hope this is useful. Brad Lauchnor blauchno at state_ut.us in Salt Lake- two days of non-stop, light snow. Seasonal temps in the 20's.