Locality:
United States, Wisconsin, Dodge, In the Rock River on the Horicon Marsh
43.46614707 -88.75428723
Verbatim Coordinates:
T12N R15E sec31
Habitat:
In river in 9 to 10 dm. of water. Growing with coontail in slight turbid slow water subject to wave action, with heavy muddy siltation as a bottom.