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Athyrium
LADY FERN

Higher Taxonomy
Family: WoodsiaceaeView DescriptionDichotomous Key

Common Name: CLIFF FERN FAMILY
Habit: Perennial herb in soil or rock crevices; rhizome generally short-creeping, ascending, or erect, scales small to large, generally tan to brown, generally uniformly colored. Leaf: generally tufted or short-spaced, 5--200+ cm, generally +- alike; stipe firm or fleshy (easily crushed), base darker or not, with 2 vascular strands; blade generally 1--3-pinnate, +- glabrous or with hairs, hair-like scales, or gland-tipped hairs on axes, veins generally free (or netted); rachis, costa generally grooved adaxially. Sporangia: sori round, oblong, J-shaped, or linear along veins; indusia 0 or oblong, J-shaped, reniform, or linear, or of many segmented hair- or scale-like fragments or lobes encircling sorus from below; spores elliptic, winged, ridged, or spiny, scar linear.
Genera In Family: +- 15 genera, 700 species: worldwide, especially tropics, wooded areas, but some genera (e.g., Cystopteris, Woodsia) generally temperate. Note: See note, reference (Smith et al. 2006 Taxon 55:705--731) under Dryopteridaceae for removal of genera from that family to this.
eFlora Treatment Author: Alan R. Smith, except as noted
Scientific Editor: Thomas J. Rosatti.

Athyrium
Habit: Rhizome short-creeping to suberect, stout. Leaf: stipe stout, fleshy, easily crushed, straw-colored except base generally blackened, base scaly, ×-section with 2 crescent-shaped vascular strands; blade generally >= 2-pinnate, pinnae of equal sides, +- glabrous or minutely hairy, veins free. Sporangia: sori +- round, +- oblong, or J-shaped; indusia 0, oblong, J-shaped, or reniform, laterally attached.
Species In Genus: +- 100 species: generally northern temperate, especially eastern Asia. Etymology: (Greek: doorless, from enclosed sori)
eFlora Treatment Author: Alan R. Smith
Jepson Online Interchange
Key to Athyrium

Previous taxon: Woodsiaceae
Next taxon: Athyrium distentifolium var. americanum

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Citation for this treatment: Alan R. Smith 2016. Athyrium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=10761, accessed on May 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 28, 2016.


Athyrium filix-femina var. cyclosorum
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© 2008 Keir Morse
Athyrium filix-femina var. cyclosorum
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© 2008 Keir Morse
Athyrium distentifolium var. americanum
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© 1995 John Game
Athyrium filix-femina var. cyclosorum
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© 2008 Keir Morse
Athyrium alpestre var. americanum
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© 2010 Keir Morse
Athyrium filix-femina
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© 2013 California Academy of Sciences

More photos of Athyrium in CalPhotos