Asplenium fontanum (L.) Bernh.
Synonyms |
Polypodium fontanum L. |
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Common name |
Smooth spleenwort. |
Description |
Rhizome thick, erect; rhizome scales brown, lanceolate in outline, apex filiform, to 4 mm long. Fronds tufted, 10-15 (30) cm long, elongated and narrow. Stipe equal to the lamina or shorter, black at the base, green above. Lamina 2-pinnate-pinnatifid, light green to gray-green, herbaceous, glabrous. Pinnae 10-20 pair, alternate, basal pinnae more distant and drecressent; pinnules up to 5 pair at the widest part of the frond, diminishing to 2 at the base; margins coarsely incised; veins free, forking. Rhachis green, hairless or sometimes with some glandular hairs. Sori 2-3 per pinnae, oblong to linear in outline, submarginal along the vein; indusium whitish, entire, opening outwards. |
Notes | |
Derivation | fontanum: growing in running water. |
Habitat | Rocks and high mountains. Exclusively calcareous in sheltered rock crevices, mostly under overhangs or on rock faces not directly in the sun. |
Distribution worldwide | Africa, central Europe, Asia. |
Distribution in Africa |
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Growth form |
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Literature |
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