Potamogeton illinoensis Morong
Family: Potamogetonaceae
Illinois pondweed
[Potamogeton lucens auct. non L.]
Potamogeton illinoensis image
Andrew Hipp  
Etymology: Potamogeton: from Greek potamos, "a river," and geiton, "a neighbor," because of the habitat
Plants: perennial, submersed aquatic; stems to 7', stout; thick rhizomes
Leaves: alternate, entire, with prominent midvein, 9-19 veins, stipules free of axils of leaves & with 2 ridges; sometimes produces elliptical floating leaves
Flowers: green-brown, small, stalk usually thicker than stem; inflorescence dense cylindrical spike
Fruits: dry seed with 3 dorsal ridges and a short beak
Habitat: clear water to >10'
Conservation Status: Native
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Andrew Hipp  
Potamogeton illinoensis image
Paul Skawinski  
Potamogeton illinoensis image
Potamogeton illinoensis image
Robert W. Freckmann  
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Paul Skawinski  
Potamogeton illinoensis image
Potamogeton illinoensis image
Paul Skawinski  
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Paul Skawinski  
Potamogeton illinoensis image
Potamogeton illinoensis image
Paul Skawinski  
Potamogeton illinoensis image
Potamogeton illinoensis image
Robert W. Freckmann  
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
Potamogeton illinoensis image
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