''Athyrium filix-femina'' is a large, feathery species of fern native throughout most of the temperate Northern Hemisphere, where it is often abundant in damp, shady woodland environments and is often grown for decoration.
The plant is caespitose . The fronds are light yellow-green, 20-90 cm long and 5-25 cm broad; they are deciduous. Sori appear as dots on the underside of the frond, 1-6 per pinnule. They are covered by a prominently whitish to brown reniform indusium. Fronds are very dissected, being 3-pinnate. The stripe may bear long, pale brown, papery scales at the base.
The rhizomes and young fronds are poisonous when raw, but edible after cooking.
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