Platycerium - Polypodiaceae

Platycerium elephantotis Schweinf.

Photo: BT. Wursten
Mozambique

Photo: S. Tolan
Zambia

Photo: BT. Wursten
Mozambique

Photo: P. Ballings
Mozambique

Photo: BT. Wursten
Mozambique

Photo: BT. Wursten
Mozambique

 

 

 

 

Synonyms

Platycerium angolense Welw. ex Baker
Alcicornium angolense Welw. ex Underw.
Platycerium velutinum C. Chr.

Common name

Itala dawikulukulu Mutuntami

Description

Rhizome c. 1 cm. in diameter; rhizome scales awl-shaped, ciliate, up to 1.5 cm. long, brown with a central black stripe. Sterile fronds lower part thick and spongy, upper part membranous, c. 45 x 30 cm., erect, oblong in outline, overlapping at the cordate base and forming a large thalloid mass, prominently veined in the upper 2/3, margin entire to irregularly wavy at the apex, covered at first with grey stellate hairs, becoming hairless with age. Fertile fronds 50 x 25 cm., broadly obcuneate in outline, apex rounded, margin entire to subentire, coriaceous, subglabrous above, densely set below with rufous stellate hairs c. 1 mm. in diameter. Sporangia covering a large oval area of about 25 cm. wide below the frond apex, densely set with brown stellate hairs similar to those on the lamina.

Notes

The fertile frond is broadly cuneate, lacking the ‘stag horns’ of the commonly cultivated species.

Derivation

eléphantos: elephant, otis: ear; an allusion to the very large and broad fronds.

Habitat

High level epiphyte on large trees in dry forests, at forest edges, in light shade or full sunlight

Distribution worldwide

Distribution in Africa

Angola, Benin, Burundi, Cameroon, Congo, Dem. Republic of Congo, Ethiopia, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Malawi, Mozambique, Nigeria, Rwanda, Senegal, Sierra Leone, Sudan and South Sudan, Tanzania , Togo, Uganda, Zambia.

Growth form

Epiphytic, lithophytic.

Literature

  • Jacobsen, W.B.G. (1983) The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 300 - 301. (Includes a picture).
  • Kornas, J. (1979) Distribution and ecology of the Pteridophytes in Zambia. Polska Akademia Nauk Wydzial II Nauk Biologicznych. Pages 75 - 76.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Pages 96 - 97. (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 162.
  • Schelpe, E.A.C.L.E. (1970) Pteridophyta. Flora Zambesiaca, 0 Page 145.
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