"Fly Fishers Guiding Each Other By Sharing Their Personal Reports"
It would make me wonder if the flower bloomed outside the water and a sudden water rise caused this. Mark
Good question Shoreman. In any case, very cool.
This part of the river has good flow and has areas where it is likely underwater all the time. Maybe some botanist out there can tell us what this flowering, sub-aquatic plant is called. Thanks for the comments.