United States, Minnesota, Aitkin, Woross State Wildlife Management Area. About 16.5 km (10.2 miles) south of McGregor at a heading of 176 degrees.
46.45858 -93.29195
T046N R23W sec19
Soil is mesic loam with a thick organic layer.
Other ferns collected here on this date include: Phegopteris connectilis, Equisetum sylvaticum, Pteridium aquilinum var. latiusculum, Athyrium filix-femina var. angustum.