American Alpine Lady Fern

Athyrium distentifolium americanum

Habitat 3

Moist, open rocky subalpine slopes and alpine meadows.

Distribution 3

Yukon: East-central Yukon; known only from near the Northwest Territories border at about 63°N
North America: From Yukon to Newfoundland, southwestern United States
World: North America

Distinguishing Features 3

Sori round, submarginal; indusia much reduced or usually absent. This species is smaller than the Lady Fern (<80 cm) and has a crinkled appearance as though scorched by a flame. Lady Fern has horseshoe-shaped indusia.

Sources and Credits

  1. (c) J Brew, some rights reserved (CC BY-SA), uploaded by J Brew, http://www.flickr.com/photos/93452909@N00/7993261918
  2. (c) brewbooks, some rights reserved (CC BY-SA), https://www.flickr.com/photos/brewbooks/7993253369/
  3. (c) L.G. Johanson, some rights reserved (CC BY-SA)

More Info

iNaturalist.ca Map

Plant All (Plantae), Wood Fern Family (Dryopteridaceae)