I collected some plants from a local lake today and I found on that I have never seen befor. It's about three feet long (propable more), I looks like a gaint strand of hornwort, has lots of stems that split off of the main one,and it has a big mass of roots at the bottom of it. It must not be hornwort scince it looks like it was rooted and I have always read that hornwort doesn't have real roots.