Asplenium - Aspleniaceae

Asplenium cancellatum Alston






Asplenium petiolatum Mett. ex Kuhn var. subaequilaterale Baker
Asplenium subaequilaterale (Baker) Hieron.
Asplenium subhemitomum Brause
Asplenium dimidiatum var. subaequilaterale Bak.

Common name


Rhizome shortly creeping or erect; rhizome scales deltoid-lanceolate in outline, pale. Fronds monomorphic, closely spaced, up to 1 m long, subcoriaceous. Stipe up to 50 cm long, grooved at apex, shiney, blackish. Lamina pinnate; lateral pinnae c. 6 pairs, subtrapezoidal in outline, base wedge-shaped, margins irregularly toothed, 7.5 x 1.5 cm, greenish; costa apparent, slightly prominent on the underside, distinct to the top of the pinna; lateral veins united or bifurcated. Sori very thin; indusium entire, membranous.




Distribution worldwide

Africa, Madagascar.

Distribution in Africa

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

Growth form



  • 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 81.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3. Flore du Cameroun, Pages 206 - 207. (Includes a picture).
  • Thardieu-Blot, M.L. (1964) Ptéridophytes vol.8. Flore du Gabon, Page 136. (Includes a picture).