Athyriaceae
Lady Fern Family
1 genera
2 species
2 subspecies and varieties
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Athyrium distentifoliumalpine lady-fern
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana, Wyoming and Colorado; also in northeastern Canada and Greenland.
Habitat: Open, rocky slopes and along streams at mid- to high elevations in the mountains.
Origin: Native
ssp. americanum – American alpine lady fern
Athyrium filix-feminalady-fern
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast; circumboreal.
Habitat: Moist woods, meadows, forest edge, and shaded riparian corridors from low to middle elevations.
Origin: Native
Spores: May-September
ssp. cyclosorum – lady fern, northwestern lady fern