Lellingeria - Polypodiaceae

Lellingeria oosora (Baker) A.R. Sm. & R.C. Moran

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

 

 

 

 

Synonyms

Grammitis oosora (Baker) J.E. Burrows
Xiphopteris oosora (Baker) Alston
Polypodium oosorum Baker

Common name

Description

Rhizome c. 1 mm diameter, shortly creeping to ascending; rhizome scales brown, entire, lanceolate, up to 1.5 mm long. Fronds pinnatifid to pinnate, tufted, erect, sessile or subsessile, subcoriaceous. Stipe short, 2-6 mm long, less than 1/7 the length of the lamina or included in the lamina, with hairs and glandular hairs. Lamina up to 4.9-11 × 0.4-0.7 cm, linear in outline, apex rounded to pointed, base wedge shaped to tapering, deeply pinnatifid to pinnate, pinnae 2-4 x 1-2 mm, oblong, glabrous or with hairs and glandular hairs on both surfaces of rhachis and glandular hairs on upper surface of lamina, midrib dark brown to blackish; veins free, ending in a conspicuous pale hydathode on the upper surface. Sori round to elliptic, one on each lobe next to the midrib.

Notes

Derivation

oosora: with sori shaped like an egg.

Habitat

Moist, moss-covered rocks along a deeply shaded streambank in high-altitude evergreen mist forest, epiphyte in montane forest.

Distribution worldwide

Africa, Madagascar, São Tomé.

Distribution in Africa

Cameroon, Equatorial Guinea (incl. Bioko), Gabon, Guinea, Ivory Coast, Liberia, Malawi, Mozambique, Rwanda, Sierra Leone, Tanzania , Zimbabwe.

Growth form

Epiphytic, lithophytic.

Literature

  • Burrows, J.E. (1990) Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 186 - 187. As Grammitis oosora (Includes a picture).
  • Parris, B.S. (2005) Grammitidaceae. Flora of Tropical East Africa, Page 7. (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 156.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Page 107.
  • Schelpe, E.A.C.L.E. (1970) Pteridophyta. Flora Zambesiaca, 0 Pages 143 - 144. As Xiphopteris oosora
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