United States, Minnesota, Pine, Chengwatana State Forest, about 14.5 km (9 miles) due east of the approximate center of Pine city.
45.82522 -92.78319
T039N R20W sec36
Other ferns collected here on this date include: Matteuccia struthiopteris var. pensylvanica, Equisetum pratense, E. hyemale var. affine, Onoclea sensibilis.