Lady Ferns: The Genus Athyrium in the Cascade Mts. of Oregon and Washington

[Ferns of the Cascade Mountains of Oregon and Washington]

Lady Ferns of the Cascade Mountains of Oregon and Washington

The Genus Athyrium

Alpine Lady Fern: Athyrium distentifolium var. americanum

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) -

Paul Slichter E-mail