Athyrium - Woodsiaceae

Athyrium filix-femina (L.) Roth

 

 

 

 

Synonyms

Polypodium filix-femina L.
Asplenium filix-femina (L.) Bernh.

Common name

Lady fern.

Description

Rhizome short-creeping, forming an asymmetric clump, stout, scaly. Fronds monomorphic, 120 x 30 cm, deciduous, blade/stipe ratio: more than 1:1 to 2:1. Stipe straw-colored above, base dark red-brown or black, swollen; in some forms very red, old stipes persistent; scales linear- to ovate-lanceolate in outline, 7-20 × 1-5 mm, light to dark brown. Lamina 2-pinnate-pinnatifid, less and more also seen, elliptic to lanceolate in outline, apex acuminate, herbaceous, yellow-green to bright green; pinnae 20 to 30 pair, sessile to short-stalked, linear-oblong to lanceolate in outline, apex acuminate, margins toothed or lobed, blunt or pointed at the tip; veins free, forking, not reaching the margin; rhachis , costae, and costules glabrous or with glands or hairs; costae grooved above, V-shaped, continuous from rhachis to costae to costules. Sori straight, sometimes hooked at the far end, or horseshoe-shaped, at the base of the segments; indusium elongate, toothed, to a veinlet.

Notes

Derivation

filix: fern, femina: female or woman.

Habitat

Meadows, thickets, woodland, swamps.

Distribution worldwide

North, Central and south America, Africa, Europe, Asia.

Distribution in Africa

Algeria, Libya, Morocco and Western Sahara, Tunesia.

Growth form

Terrestrial.

Literature

  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Page 0. (Includes a picture).
  • Stuart, T. (2004-) Hardy Fern Library. Published on the internet: http://hardyfernlibrary.com/ferns/home.cfm. Page 0. (Includes a picture).
  •