United States, Minnesota, Pope, 9.5 miles north of Sunburg.
45.49 -95.23 +-2m. NAD83
T123N R36W sec05
397 meters (1302ft)
Growing in the northern part of Johanna Lake (ID 61000600), a 1,400 acre shallow, eutrophic lake situated in the Minnesota River Prairie Ecological Subsection. Water clarity good. Adjacent to an island point. Individuals locally abundant in 1.2 meters of water.