Oleandra - Oleandraceae

Oleandra annetii Tardieu






Oleandra distenta Kunze var. annetii (Tardieu) Tardieu

Common name


Rhizome long creeping; rhizome scales triangular, slightly indented at the base, attached by the center, provided with very long hair-like extensions, multicellular, glandular. Fronds monomorphic, spaced on rhizome, simple. Stipe articulated c. 1 cm from the base, 4-5 cm long, glabrous. Lamina simple, 25-30 × 4.5 cm, lanceolate in outline, base oblique, apex tapering in a 2-3 cm long point, margins entire, thickened, bearing multicellular hairs, lower surface glandular; veins simple, sometimes forked near the costa, with short hairs; costa with short glandular hairs. Sori in an irregular line on either side of the midrib, situated within the inner half of the lamina; indusium kidney-shaped, glandular.



annetii: this fern was discovered by E. Annet in Cameroun.


Rocks in forest.

Distribution worldwide

Africa, Gulf of Guinea Is., Seychelles.

Distribution in Africa

Cameroon, Equatorial Guinea (incl. Bioko).

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 107.
  • Tardieu-Blot, M.-L. (1964) Ptéridophytes vol.3.Flore du Cameroun, Page 107.