Pond Boss Forums AQUATIC VEGETATION Identifying plants Illinois Pondweed?

This is in the lake right in front of the pier. This stand has been there for probably the past 6 or 7 years. The herbacide that is applied on the lake hasn't killed it (Reward, Rodeo, Cutrine). It spreads very slowly, it is now a patch that is about 10' square. This is the first time that I've seen it poke up past the surface of the water. It's growing in 4' deep water. For comparison, each "board" on the pier is roughly 6" wide.





Since it grows so slowly, I was thinking of harvesting some of it and moving it to my pond. But before doing that I want to know exactly what it is. I'd have to be very careful in rinsing it off because there is milfoil in the lake and I don't want that in the pond.