[Lady Ferns: The Genus Athyrium in the Cascade Mountains of Oregon and Washington]

Alpine Lady Fern, American Alpine Lady Fern

Athyrium distentifolium var. americanum

Synonyms: Athyrium alpestre, Athyrium alpestre var. americanum, Athyrium americanum, Athyrium distentifolium ssp. 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)

American alpine lady fern as seen growing at the base of several large rocks along the Lower Burroughs Mountain Trail at Rainier National Park..........August 22, 2009.

Alpine Lady Fern, American Alpine Lady Fern: Athyrium distentifolium var. americanum (Synonyms: Athyrium alpestre, Athyrium alpestre var. americanum, Athyrium americanum, Athyrium distentifolium ssp. americanum)

American alpine lady fern as seen growing in rocks along the Goat Ridge Trail #95 in Jordan Basin, Goat Rocks Wilderness........July 12, 2018.
Paul Slichter