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Athyrium angustum is known as the northern lady 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
Conservation status
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 which can be difficult to distinguish between the two.[5] This species, the southern lady fern, has a broader frond, especially at the base.


References


  1. "NatureServe Explorer Athyrium angustum". NatureServe Explorer Athyrium angustum. Arlington Virginia, United States of America: NatureServe. 2022-06-03. NatureServe Element Code:PPDRY02021. Retrieved 23 Jun 2022.
  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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