Alpine Lady Fern, American Alpine Lady Fern: Athyrium distentifolium var. americanum (Synonyms: Athyrium alpestre, Athyrium alpestre var. americanum, Athyrium americanum, Athyrium distentifolium ssp. americanum) -
Common Ladyfern, Northwestern Ladyfern, Northwestern Lady Fern: Athyrium filix-femina var. cyclosorum (Synonym: Athryium filix-femina ssp. cyclosorum) -