Pteris linearis Poir.
Synonyms |
Pteris nemoralis Bory ex Willd. |
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Common name |
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Description |
Rhizome erect; rhizome scales linear-lanceolate in outline, ± 5 mm long, with dark shiny centre stripe and pale margins. Fronds tufted, 1–2 m tall. Stipe straw-coloured, dull pale brown to reddish and with scattered scales near base, 50–80 cm long. Lamina ± oblong in outline, 60–70 × 35 cm, pinnate with lower pinnae branched near base; upper pinnae in 6–15 pairs, narrowly oblong in outline, 8–30 × 2–6 cm, apex usually abruptly ending in a long tail-like tip, sterile margins entire; ultimate segments in 15–30 pairs, narrowly oblong or ± curved like a sickle, 0.8–3.5 cm long, 4–8 mm wide, apex rounded, sometimes ± glandular beneath; veins joined only at base of sinus, the areoles broadly triangular bordered by the costa of the pinna; costa above with spinules at junction with costulae. Sori up to 3 cm long, occupying up to 5/6th of length of segments. |
Notes | This species can be recognized by a pinnate lamina with branched lower pinnae near base, anastomising veins and rounded entire apices of pinna lobes. |
Derivation | linearis: linear |
Habitat | On riverbanks near waterfalls, places moist at least during the rains and shaded by the fringing trees. |
Distribution worldwide | Africa, Comoro Isl., Madagascar, Réunion, Azia |
Distribution in Africa |
Burundi, Cameroon, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, Ghana, Guinea, Ivory Coast, Liberia, Mali, Rwanda, Sierra Leone, Sudan and South Sudan, Tanzania , Uganda, Zambia, Zimbabwe. |
Growth form |
Terrestrial. |
Literature |
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