[Ferns East of the Crest of the Cascade Mountains of Oregon and Washington]

Alpine Ladyfern, American Alpine Lady Fern

Athyrium alpestre ssp. americanum

Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum

Alpine ladyfern as seen in a talus field in the Strawberry Mountain Wilderness of central Oregon........August 3, 2011.

Ventral surface of a leaflet of Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum - Dorsal surface of a leaflet of Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum

Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum

Additional close-up photos of alpine ladyfern as seen in a talus field in the Strawberry Mountain Wilderness of central Oregon........August 3, 2011.

Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum - Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum

Alpine ladyfern as seen in a talus field along the Onion Creek Trail #368, Strawberry Mountain Wilderness of central Oregon........July 18, 2013.

Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum

Alpine lady fern as seen in a boulder field just south of Wildhorse Lake, Steens Mountain, Harney County, Oregon..........July 10, 2014.

Habitat of Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum - Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum

Alpine lady fern as seen in a granitic boulder field uphill to the west of Lost Lake and along the East Fork Lostine River Trail #1662, Eagle Cap Wilderness.........August 4, 2016.
Paul Slichter