Athyrium distentifolium Opiz var. americanum (Butters) Cronquist
American alpine lady fern
2014 Steve Matson 2014 Steve Matson 2021 R.A. Chasey 2014 Steve Matson 2025 UCJEPS - University and Jepson Herbaria, University of California, Berkeley 2021 R.A. Chasey 2021 R.A. Chasey 2021 R.A. Chasey 2014 James Gonsman 2022 John Rawlings 2021 R.A. Chasey 2021 R.A. Chasey 2020 Bob Sweatt 2014 Steve Matson
Athyrium distentifolium var. americanum is a fern that is native to California.
[Wikipedia] Range, Alternate Name: The subspecies americanum is found in the mountains of western United States, Alaska, Canada and coastal Greenland,[5] and is sometimes classified as a separate species Athyrium americanum. (link added by Mary Ann Machi)
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Suggested Citation
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 05/13/2025).
