Pteris buchananii Baker ex Sim
Synonyms |
Pteris subquadripinnata Chiov. |
---|---|
Common name |
|
Description |
Rhizome widely creeping, c. 10mm in diameter; rhizome scales ovate, dark brown, entire, apex pointed, up to 4.5 x 1.5-3 mm. Fronds widely spaced, herbaceous, (0.8-)1.5-2 m long. Stipe up to 1 m high, glabrous, strawcoloured or darker brown at base . Lamina 0.5-1 m x 50-80 cm, broadly triangular in outline, 3-pinnate to 4-pinnatifid, basal pinnae almost as long as lamina and strongly basiscopically developed. secondary pinnae ovate-triangular in outline, 17-40 x 10-25 cm; pinnules in 5-10 pairs, oblong-lanceolate in outline, 3-15 x 1.2-5 cm, pinnatifid or sometimes bipinnatifid, often cut almost to the costa; ultimate lobes in 7-20 pairs, 0.6-2.5 x 0.2-0.8 cm, oblong-lanceolate, falcate, margins bluntly toothed; veins free, but united below the sinuses; glabrous on both surfaces but with a spine at junction of costae and costules above. Rhachis stramineous spinose. Sori in marginal lines, extending for half to three quarters of the length of fertile lobes; indusia entire, membranous. |
Notes | Could be confused with Pteris dentata which has a short, erect rhizome and veins that are free. |
Derivation | buchananii: named after Rev. J. Buchanan (1821-1903); type specimen was collected by him in Natal (Kwazulu-Natal) in the 1870s. |
Habitat | Clearings in Evergreen forest, in areas of more light intensity, receiving high rainfall; swampy places; steep forest slopes with streams and swamps. |
Distribution worldwide | See African distribution. |
Distribution in Africa |
Ethiopia, Kenya, Malawi, South Africa, Tanzania , Uganda, Zimbabwe. |
Growth form |
Terrestrial. |
Literature |
|