United States, Minnesota, Hennepin, 2.2 miles southeast of Rockford.
45.06623 -93.69954 +-4m. NAD83
T119N R24W sec34
Found growing in the western half of Sarah Lake (ID 27019100), a 550 acre eutrophic basin situated in the Big Woods Subsection. Semi-sheltered from wave action by stand of Typha sp. Locally abundant on surface and throughout water column at 0.3 meters of depth.
Soft, muck substrate.
Associated with Spirodela polyrrhiza, Ceratophyllum demersum, Myriophyllum spicatum.