Adiantum schweinfurthii Kuhn
Synonyms |
Adiantum chevalieri Christ |
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Common name |
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Description |
Rhizome short; rhizome scales linear-lanceolate in outline, apex gradually tapering to a sharp point, brown, entire. Fronds monomorphic, tufted, erect with tips arching, narrowly oblong-lanceolate in outline, 15-35 cm long, membraneous. Stipe slender, not winged, 3-7 cm long, dark purple, shiny, glabrous, base with brown scales. Lamina pinnate, 12-20 x 3-4 cm; pinnae narrowly oblong or oblong-lanceolate in outline, dimidiate, apex rounded, upper margin lobed, lower margin entire, 12-22 x 3-10 mm, pale green, hairless; rhachis black, shiny, not winged; stalklets to 0,5 mm long; veins forked. Sori 4-7 per pinna, oblong-kidney shaped, 1.2-1.8 x 0.7 mm. |
Notes | A. schweinfurthii is pinnate, has a rhachis that is not hairy and short, unwinged petiolules (< 1mm), this makes it different from other species in Adiantaceae. Its pinnae are more oblong-lanceolater and have 4-7 sori per pinna; thus differing from A. stolzii (pinnae more rectangular, sori 2-3(-4) per pinna) |
Derivation | schweinfurthii named after G.A. Schweinfurth (1836-1925), German botanist, ethnologist, who traveled in Central East Africa, the Congo, the Libyan desert, and from the Nile River to Khartoum. |
Habitat | Steep sloping bank in woodland, shade. |
Distribution worldwide | See African distribution. |
Distribution in Africa |
Angola, Burkina Fasso, Cameroon, Central African Republic, Chad, Dem. Republic of Congo, Guinea, Mali, Nigeria, Sudan and South Sudan, Tanzania , Togo. |
Growth form |
Terrestrial. |
Literature |
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