Large-Leaf Pondweed (Potamogeton amplifolius)

Leaves are both floating and submersed. Submersed leaves are large, oblong, wavy and taper to the stem. Floating leaves are oval-shaped. Parallel leaf veins are evident. Stems are seldom branched. Leaves are alternately arranged on the stem. Solid, tightly packed spike of nutlets at tip of weed rises above water surface when mature.

E=Excellent, G=Good, F=Fair