Athyrium angustum, the northern lady fern, is a fern native to northeastern North America.[3][4] It was long included in the superspecies Athyrium filix-femina, but is now largely recognized as a distinct species.
| Athyrium angustum | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Aspleniineae |
| Family: | Athyriaceae |
| Genus: | Athyrium |
| Species: | A. angustum
|
| Binomial name | |
| Athyrium angustum | |
Athyrium angustum has a more southern counterpart — Athyrium asplenioides, the southern lady fern — that is very similar.[5] The latter has a broader frond, especially at the base.
References
edit- ^ NatureServe (November 1, 2024). "Athyrium filix-femina ssp. angustum". NatureServe Explorer. Arlington, Virginia. Retrieved November 17, 2024.
- ^ Faber-Langendoen, D; Nichols, J; Master, L; Snow, K; Tomaino, A; Bittman, R; Hammerson, G; Heidel, B; Ramsay, L; Teucher, A; Young, B (2012). NatureServe Conservation Status Assessments: Methodology for Assigning Ranks (PDF) (Report). Arlington, Virginia, United States of America: NatureServe.
- ^ Hazen, H. H. (1947). "Survey of Ferns in a Maine Mountain Area". American Fern Journal. 37 (3): 79–82. doi:10.2307/1545194. JSTOR 1545194.
- ^ Wright, Kenneth E.; Crandall, Dorothy L. (1941). "Rhode Island Ferns". Torreya. 41 (3): 73–75. ISSN 0096-3844. JSTOR 40597390.
- ^ Benedict, R. C. (1934). "Can Anyone Readily Distinguish the Northern and Southern Lady Fern Species?". American Fern Journal. 24 (4): 117–119. doi:10.2307/1544507. JSTOR 1544507.
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External links
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Media related to Athyrium asplenioides var. angustum at Wikimedia Commons
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