United States, Minnesota, Roseau, Hereim State Wildlife Management Area, about 6.8 km (4.2 miles) southwest of the approximate center of Greenbush at a heading of 236 degrees.
48.66656 -96.25738
T160N R43W sec19
At the upland edge of a black ash swamp. Habitat
In moist sandy loam.
Dominated by Fraxinus nigra and Populus tremuloides. Other ferns collected here include: Athyrium filix-femina var. angustum, Dryopteris carthusiana.