Potamogeton strictifolius A.Benn.
Family: Potamogetonaceae
narrow-leaved pondweed, stiff pondweed, straight-leaved pondweed
[Potamogeton rutilus auct. non Wolfg.]
Potamogeton strictifolius image
Robert W. Freckmann  
Potamogeton strictifolius image
University of Wisconsin-Stevens Point, Robert W. Freckmann Herbarium (UWSP)  
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, stiff, 3-5 veins, pointed tip; stipules fibrous and white
Flowers: green-brown, small, stalk slender, winter buds flattened, outer leaves arching outward; inflorescence spike with whorls
Fruits: rounded, dry seed