Cheilanthes acrostica (Balb.) Tod.
Synonyms |
Pteris acrostica Balbis |
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Common name |
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Description |
Rhizome shortly creeping, often branched in terminal part; rhizome scales narrow, 1-1.5 x 0.5-0.8 mm, red-brown. Fronds monomorphic, densely tufted, 8-17 x 2-3.5 cm, stiff. Stipe 3-5 cm long, dark brown, with scattered scales similar to those on the rhizome basaly. Lamina 2-pinnate, lanceolate in outline, bluish to dark green, hairless above; pinnae in 8-12 pairs, broadly lanceolate in outline, 1-2 x 0.8-1 cm, deeply pinnatifid; ultimate segments oblong in outline, margin bluntly toothed to deeply pinnatifid, apex narrowly rounded, 8-10 x 3-5 mm, hairy underneath, subglabrous on upper surface; venation obscure. Sori marginal, at first discrete but forming a continuous line at maturity; indusium continuous or irregularly discontinuous, narrow, membranous. |
Notes | |
Derivation | |
Habitat | Shady, damp areas under sanstone rock. |
Distribution worldwide | Africa, Cape Verde Islands, Southern Europe, Turkey, Iran, Afganistan to western Himalayas. |
Distribution in Africa |
Algeria, Egypt, Ethiopia, Libya, Morocco and Western Sahara, Tunesia. |
Growth form |
Terrestrial. |
Literature |
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