Asplenium - Aspleniaceae

Asplenium barteri hook.

Photo: C. Jongkind
Liberia

Photo: C. Jongkind
Liberia

 

 

 

 

Synonyms

Asplenium lunulatum sw. var. barteri (Hook.) bonap.
Asplenium sherburgense Baker
Asplenium barteri Hook. var. acuta Hieron.

Common name

Description

Rhizome erect, short; rhizome scales dark brown, to 4 mm long, narrowly triangular in outline, apex abruptly narrowedinto a tapering point, margin pale brown with few hair-like lobes. Fronds monomorphic, tufted, pinnate, proliferous, subcoriaceous. Stipe 10–30 cm long, greyish, with few narrow, black scales to 3 mm long. Lamina ovate-lanceolate in outline, 14–30 x 4–6 cm, with 13-18 pairs of pinnae, basal pinnae not or only slightly reduced, apical pinnae abruptly narrowed into a linear lobed terminal pinna, at its base often proliferous; pinnae ovate or elliptic in outline, apex shortly tapering to point or rounded, base unequal, often slightly auriculate on the acroscopic side, margin slightly crenate-dentate, 2–4 x 0.5–1.2 cm, sessile, closely spaced; rhachis scaly; veins mostly simple, . Sori in 6–7 pairs on each side of the costa, at angle of 45°, 2–4 mm long; indusium linear, membranous, entire, 0.4–0.5 mm wide.

Notes

A. barteri has pinnate, proliferous fronds; rhizome scales up to 4 mm long with marginal protuberances.

Derivation

barteri: named after Charles Barter (1829/30-1859), foreman of the Regent's Park gardens of the Royal Botanic Society, London, was natural history collector on the second Niger expedition of William Balfour Baikie (1857-1859).

Habitat

Moist forest, close to river, on schist.

Distribution worldwide

See African distribution.

Distribution in Africa

Angola, Benin, Cameroon, Central African Republic, Congo, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Nigeria, Sierra Leone, Sudan and South Sudan, Tanzania , Uganda.

Growth form

Epiphytic.

Literature

  • Beentje, H.J. (2008) Aspleniaceae. Flora of Tropical East Africa, Page 22. (Includes a picture).
  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Page 80.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3. Flore du Cameroun, Pages 192 - 193.
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8. Flore du Gabon, Pages 130 - 132.
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