Athyrium angustum

Athyrium angustum
Conservation status
Secure  (NatureServe) [1] [2]
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 (Willd.) C. Presl

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 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

1. NatureServe (November 1, 2024). "Athyrium filix-femina ssp. angustum". NatureServe Explorer. Arlington, Virginia. Retrieved November 17, 2024.
2. 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.
3. 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.
4. Wright, Kenneth E.; Crandall, Dorothy L. (1941). "Rhode Island Ferns". Torreya. 41 (3): 73–75. ISSN   0096-3844. JSTOR   40597390.
5. 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

• Media related to Athyrium asplenioides var. angustum at Wikimedia Commons