This submerged pondweed has a stout stem with lance/oval shaped
leaves. The leaves have a sharp point on the end and 9-
10 veins per leaf. It has many leaves on each stem, but fewer than the
Large-Leaf Pondweed which is a very similar plant. Large-Leaf Pondweed
has more leaves with each leaf having more veins than Illinois Pondweed.