This species resembles broad-leaved pondweed Potamogeton natans in its habitat and shape of leaves.
However in contrast all leaves are submerged as well as floating leaves -shorter stalks on submerged than the floating. The leaves are thin, translucent, reddish brown, tapered into the stalk. They have a fine network of veins. It has no flexible joint at the top of the leaf stalk. Oval elliptical floating leaves are 5 to 10 cm long, submerged ones are narrow.
Flowers June to July.
|This monocot-related article is a stub. You can help Wikipedia by expanding it.|