KraKen

I just got back from vacation at Woodloch Pines resort in Pennsylvania. It's on Lake Teetywskung so while I was there I collected some aquatic plants. It seems that I've got 4 different kinds, a moss, 2 stem plants and a rosette.

I think the rosette might be a spiral vallis, it has straight spiral leaves, propagates through runners and formed dense lawns on the bottom of the lake.

I found one of the stem plants growing amongst the vallis type plant, it's red in color and has long thin underwater leaves with 2 at each node, it also had wider leaves which floated on the surface like lily pads. It's flower consisted of a oval cluster of small purple flowers.

The moss grew in large dense clumps on sticks and other things submerged in the water, it's about five times as big as java moss and was black except for the growing tips.

I found very little of the other stem plant and what I found was floating just under the surface. It too was redish and had short thin leaves with many on each node.

Does anyone know the identities of these plants and whether or not they can grow in a tropical npt?

pictures will be coming once photobucket cooperates.