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Athyrium filix-femina subsp. angustum (Willd.) R.T. Clausen Search in IPNISearch in Australian Plant Name IndexSearch in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical GardenAfrican Plants, Senckenberg Photo GallerySearch in Flora do Brasil 2020Search in Reflora - Virtual HerbariumSearch in Living Collections Decrease font Increase font Restore font

Published In: Cornell University Agricultural Experiment Station Memoir 291: 7. 1949. (Cornell Univ. Agric. Exp. Sta. Mem.) Name publication detail

Project Name Data (Last Modified On 7/9/2009)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native


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1a. ssp. angustum (Willd.) R.T. Clausen (northern lady fern) Pl. 4e

A. angustum (Willd.) C. Presl

A. filix-femina var. angustum (Willd.) T. Moore

A. filix-femina var. michauxii (Spreng.) Farw.

A. filix-femina f. elatius (Link) Clute

A. filix-femina f. rubellum (Gilbert) Farw.

Petiole scales brown to dark brown. Leaf blades elliptic, broadest near the middle and tapering to the base, the rachises and midribs usually glandular. Spores yellow to light brown. 2n=80. June–October.

Nearly throughout the species’ range in Missouri, but more common north of the Missouri River (northeastern U.S. west to South Dakota, south to North Carolina; Canada).

This subspecies is somewhat less common in Missouri than ssp. asplenioides. The leaf blades tend to be slightly less divided than in the other subspecies, but the degree of leaf division is variable.



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