Oleandra - Oleandraceae

Oleandra annetii Tardieu

 

 

 

 

Synonyms

Oleandra distenta Kunze var. annetii (Tardieu) Tardieu

Common name

Description

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.

Notes

Derivation

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

Habitat

Rocks in forest.

Distribution worldwide

Africa, Gulf of Guinea Is., Seychelles.

Distribution in Africa

Cameroon, Equatorial Guinea (incl. Bioko).

Growth form

Lithophytic.

Literature

  • 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.
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