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Athyrium angustum
Also called Northern Lady Fern, Subarctic Lady Fern, Subarctic Ladyfern
Athyrium angustum, the northern lady fern or subarctic lady fern, is a fern native to northeastern North America. It was long included in the superspecies Athyrium filix-femina, but is now largely recognized as a distinct species.
Athyrium angustum has a more southern counterpart — Athyrium asplenioides, the southern lady fern — that is very similar. The latter has a broader frond, especially at the base.
Athyrium angustum has been described as "small but easy-to-grow" for shady landscaped areas, including near streams or ponds.
A. angustum is distributed broadly across the northeast of North America, ranging from Labrador to Manitoba in the north and south potentially as far as Tennessee and North Carolina, although older authors limited the southern border of its range to Pennsylvania and northern Missouri.
Alpine ladyfern · Athyrium arisanense · Southern Lady Fern · Shady Ladyfern · Lady-fern · Athyrium haleakalae · Athyrium medium · Eared Lady Fern · Asian Common Ladyfern · Lady Fern
Text excerpted from the Wikipedia article Athyrium angustum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
