Family: Potamogetonaceae
grass-leaved pondweed, variable-leaved pondweed
[Potamogeton heterophyllus auct. non Schreb.]
Brenton Butterfield
University of Wisconsin - Madison (WIS-VP)
Etymology: Potamogeton: from Greek potamos, "a river," and geiton, "a neighbor," because of the habitat
Plants: perennial, submersed aquatic; stems branched; spreading rhizomes
Leaves: alternate, entire, with prominent midvein; submersed linear-lance like; 3-7 veins, stemless; floating stalked, 11-19 vein; stipules free in leaf axils
Flowers: green-brown, small, stout stalk; inflorescence dense cylindrical spike
Fruits: dry, flat oval
Habitat: water about 3' deep; in firm sediment soil
Conservation Status: Native
Plants: perennial, submersed aquatic; stems branched; spreading rhizomes
Leaves: alternate, entire, with prominent midvein; submersed linear-lance like; 3-7 veins, stemless; floating stalked, 11-19 vein; stipules free in leaf axils
Flowers: green-brown, small, stout stalk; inflorescence dense cylindrical spike
Fruits: dry, flat oval
Habitat: water about 3' deep; in firm sediment soil
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 7, Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Selected Wetland Plants: Photos, descriptions, information
Brenton Butterfield
Brenton Butterfield
Brenton Butterfield
Brenton Butterfield
Brenton Butterfield
Brenton Butterfield
Paul Skawinski
