United States, Minnesota, Clearwater, Where County Road 5 crosses the Clearwater River, about 9 miles north of Clearbrook. NW of NW of section;;150N;37W;08
47.830965 -95.4257341
47.8309650° N,95.4257341° W;collector
In moist, fine-textured sediments. Black ash swamp.Unknown associated species,, Equisetum arvense.
Athyrium angustum is a synonym of Athyrium filix-femina