American, Long-leaf Pondweed (Potamogeton nodosus)

There are both floating and submerged leaves. The floating leaves are elliptical to oval and are 4-7 inches long and up to 2 inches wide. The submerged leaves are blade like, somewhat transparent and smaller than the floating leaves. The stem is rust colored and branched in threes.

Concern: Can form dense mats and block sunlight from submerged vegetation species.