Original identification: Athyrium distentifolium var. americanum
Current identification: Athyrium distentifolium ssp. americanum
Photographer: Gerald D. Carr
Date Photographed: August 4, 2015
Location: U.S.A., Oregon, Marion County: Talus at SE end of Horseshoe Lake, off NFD Rd. 4220, 18 air mi. ENE of Detroit.
Elevation: 5385 ft.
Coordinates: 44.77635° N, 121.78624° W
Phenology: Spores