Athyrium filix-femina (L.) Roth
Synonyms |
Polypodium filix-femina L. |
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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 |
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Growth form |
Terrestrial. |
Literature |
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