Asplenium - Aspleniaceae

Asplenium laurentii J. Bommer ex H. Christ

 

 

 

 

Synonyms

Common name

Description

Rhizome erect, ± 5 mm diameter; rhizome scales dark brown, flat and narrow, tapering from the base to a sharp tip, entire, 8–13 mm long. Fronds tufted, not proliferous. Stipe blackish grey, 7–20 cm long, with sparse subulate dark brown scales. Lamina lanceolate in outline, 17–30 x 5–9 cm, pinnate, basal pinnae not reduced, terminal pinna similar to others. Pinnae in 5–11 pairs, (sub)opposite, fan-shaped, 3–4 x 4–6 cm, margin entire, apical margin irregularly toothed, petiolate, veins flabellate, surfaces with thread-like slightly lobed black scales. Sori many, along the veins, linear, 18–30 mm long, opening in both directions, not reaching the margin; indusium membranous, entire, ± 0.3 mm wide.

Notes

Derivation

laurentii: named after Laurent, who discovered this fern in DRC.

Habitat

Moist forest.

Distribution worldwide

See African distribution.

Distribution in Africa

Cameroon, Congo, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Gabon, Liberia, Uganda.

Growth form

Epiphytic.

Literature

  • Beentje, H.J. (2008) Aspleniaceae. Flora of Tropical East Africa, Pages 33 - 34. (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 89.
  •