United States, Minnesota, Cook, Boundary Waters Canoe Area Wilderness, Rolling bedrock terrain between Gaskin and Vista lakes, 19 miles north-northwest of Grand Marais. T64N R2W SE1/4 of NE1/4 of NE1/4 Sec. 25, NE1/4 of SE1/4 of NE1/4 Sec. 25
48.00109352 -90.51371147 +-6m. NAD1983
5319413N 685456E; T64N R02W sec25
Occasional in Snack Lake. Scattered loose patches in the western end of this small, shallow, boggy lake. Silty-organic substrate. In water ~5 feet deep. Full sun. Leaves floating; yellow flowers are floating to held slightly emergent. ~10-30 leaves and 3-10 flowers per patch.
Associates include Potamogeton robbinsii, P. pusillus, P. amplifolius, Myriophyllum sp.