Potamogeton friesii Rupr.
Family: Potamogetonaceae
Fries's pondweed
Potamogeton friesii image
Paul Skawinski  
Etymology: Potamogeton: from Greek potamos, "a river," and geiton, "a neighbor," because of the habitat
Plants: perennial, submersed aquatic; from rhizomes
Leaves: alternate, entire, with prominent midvein; narrow with 5-7 veins, rounded tip with short beak; pair of glands at nodes; stipules fibrous, white
Flowers: green-brown, small, stalk flattened, winter buds in tight in fan shape at 90deg. from outer leaves; inflorescence spike
Fruits: rounded, dry seed with low or no ridges
Conservation Status: Native