Asplenium - Aspleniaceae

Asplenium normale D. Don

Photo: P. Ballings
Mozambique

Photo: P. Ballings
Mozambique

 

 

 

 

Synonyms

Asplenium normale D.Don var. grandidentatum Bonap.
Asplenium rectangulare Bonap.
Asplenium opacum Kunze
Asplenium multijugum Wall. ex Mett.

Common name

Description

Rhizome ± 5 mm diameter, erect; rhizome scales dark brown, up to 2.5 mm long, lanceolate, apex gradually tapering to a point, with a narrow ferrugineous margin. Fronds tufted, erect or arching, sometimes proliferous near the apex, firmly membranous. Stipe glossy dark brown, 2–16 cm long, without grooves, glabrous. Lamina linear in outline, up to 50 x 3.3 cm, 1-pinnate, hardly decrescent below. Pinnae 18–49 pairs, up to 1.7 x 0.8 cm, with a short petiole, mostly oblong in outline, the midrib slightly forms the basiscopic margin, apex rounded, shallowly auriculate, acroscopically becoming increasingly deflexed and unequally triangular towards the base, shallowly crenate on the acroscopic and outer margins, glabrous on both surfaces. Rhachis glossy dark brown, grooved ventrally. Sori up to 3 mm long, 2–7 per pinna, oblong; indusium linear, membranous, entire.

Notes

Derivation

Habitat

Deeply shaded, moist evergreen forests, occasionally up into the heath zone.

Distribution worldwide

Africa, Asia.

Distribution in Africa

Kenya, Malawi, Mozambique, Rwanda, Tanzania , Uganda.

Growth form

Terrestrial.

Literature

  • Beentje, H.J. (2008) Aspleniaceae. Flora of Tropical East Africa, Page 17. (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 92.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Page 168.
  • Schelpe, E.A.C.L.E. (1970) Pteridophyta. Flora Zambesiaca, 0 Page 175.
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