I suspect that this aquatic plant may be what I saw emerging from the bottom of Frog Pond too, last May, but there were no leaves then, just stems starting upward. Anyhow, this plant here, was growing on the edges of Squaw Lakes - http://www.mdvaden.com/squaw_lakes.shtml - in Southern Oregon, near Applegate Lake. Elevation in the 2000 to 2500 foot range. Rogue River National Forest. Photo taken today - July 2nd.