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
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 6, Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos USGS - Northern Prairie Wildlife Research Center: Wetland Plants and Plant Communities of Minnesota and Wisconsin