Athyrium filix-femina (L.) Roth - Lady Fern


 

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Athyrium filix-femina - (image 1 of 5)

 

Taxonomy

Family: Aspleniaceae

Habitat

Moist or mesic woods, meadows, and streambanks.

Associates

 

Distribution

Quebec to Ontario and SD, south to FL, eastern TX, southern IN, MO, OK, and eastern KS.

Morphology

Deciduous from a short-creeping to erect rhizome. Leaves light green, to 1 m; blade 10-35 cm wide, acuminate, slightly reduced below, sparsely scaly, bipinnate to bipinnate-pinnatifid; pinnae 20-30 pairs, lance-linear, subsessile; veins forking, directed into the teeth; indusia dark brown, thin, ciliate when young, horseshoe-shaped.

Notes

Fruiting July

Wetland Indicator: Facultative

The horseshoe-shaped indusia are one of the best diagnostic features. Northern plants are mostly var. michauxii (Spreng.) Farw.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.

 


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Michael Hough 2010