Taxon: Athyrium alpestre (Hoppe) Nyl. ex Milde var. americanum Butters

Synonym of Athyrium distentifolium Tausch ex Opiz var. americanum (Butters) Boivin

Summary

Genus:

Athyrium

Family:

Athyriaceae

Nomen number:

415022

Place of publication:

Rhodora 19:204. 1917

Verified:

10/12/1999 ARS Systematic Botanists.

Accessions:

0 (0 active, 0 available) in National Plant Germplasm System.

Other conspecific taxa

Autonyms (not in current use), synonyms and invalid designations

No images

Conservation Status

Reference(s)

FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum

Common names

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Reference
1	Native	Northern America	Eastern Canada	Canada	Newfoundland and Labrador	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Eastern Canada	Canada	Québec	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Northwestern U.S.A.	United States	Colorado	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Northwestern U.S.A.	United States	Idaho	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Northwestern U.S.A.	United States	Montana	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Northwestern U.S.A.	United States	Oregon	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Northwestern U.S.A.	United States	Washington	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Northwestern U.S.A.	United States	Wyoming	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Southwestern U.S.A.	United States	California	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Southwestern U.S.A.	United States	Nevada	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Southwestern U.S.A.	United States	Utah	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Subarctic America	Canada	Yukon	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Subarctic America	Greenland		FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Subarctic America	United States	Alaska	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Western Canada	Canada	Alberta	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum
1	Native	Northern America	Western Canada	Canada	British Columbia	FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum

Native
Northern America

SUBARCTIC AMERICA: Canada [Yukon], Greenland, United States [Alaska]
EASTERN CANADA: Canada [Québec, Newfoundland and Labrador]
WESTERN CANADA: Canada [Alberta, British Columbia]
NORTHWESTERN U.S.A.: United States [Colorado, Idaho, Montana, Oregon, Washington, Wyoming]
SOUTHWESTERN U.S.A.: United States [California, Nevada, Utah]

Reference(s)

FNA Editorial Committee. 1993-. Flora of North America. Note: = Athyrium alpestre (Hoppe) Clairville var. americanum

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=415022. Accessed 18 October 2026.