United States, Minnesota, Swift, Monson Lake State Park; 3 miles southwest of Sunburg.
45.32 -95.28 +-2m. NAD83
T121N R37W sec02
376 meters (1233ft)
Growing near the southwest shoreline of Monson Lake (ID 76003300), a shallow, 200 acre eutrophic basin situated in the Minnesota River Prairie Ecological Subsection. Water clarity good. Individuals locally common in 0.5 meters of water. Bordering the opening to a protected bay. Observed throughout basin's nearshore zone.
Gravel substrate.
Associated with Potamogeton richardsonii, Stuckenia pectinata, Heteranthera dubia, Najas flexilis.