Ampelopteris - Thelypteridaceae

Ampelopteris prolifera (Retz.) Copel.

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

 

 

 

 

Synonyms

Goniopteris prolifera (Retz.) C.Presl
Dryopteris prolifera (Retz.) C.Chr.
Thelypteris prolifera (Retz.) P.J.Vorster

Common name

Description

Rhizome long creeping, up to 10 mm in diameter; rhizome scales black, triangular, entire. Fronds closely spaced, arching, proliferous at intervals along the rhachis, thinly coriaceous. Stipe up to 40 cm long, pale brown, hairless. Lamina up to 1 × 0.26 m, lanceolate in outline, pinnate, apex of indefinite growth, lower 3-4 pairs of pinnae gradually reduced in size. Pinnae narrowly oblong, shortly petiolate to sessile, base truncate, often with the basal acroscopic lobe overlapping the rhachis, margin shallowly incised into lobes with 5-7 pairs of veins anastomosing below the shallow sinus; undersurface sparsely set with minute hairs, upper surface hairless. Rhachis pale brown, hairless. Sori round to elongated, situated along the veins, with paraphyses; exindusiate.

Notes

Resembles Pneumatopteris unita which has a single gemmae positioned at the apex of the rhachis, an erect rhizome and 4-5 pairs of veins meeting below the sinus; this species is not found in full sun.
Ampelopteris prolifera look for: proliferous habit with several gemmae positioned along the rhachis, shortly creeping rhizome, 5-7 pairs of veins anostomising.

Derivation

prolifera: bearing plantlets; this plant produces adventituous shoots from the lamina.

Habitat

Among grass, sedges, reed banks of Phragmites on banks of rivers, ponds or lakes in hot deciduous woodland, sometimes in light shade of riverine forest.

Distribution worldwide

Africa, throughout the tropics of the old world, also Madagascar and Mauritius.

Distribution in Africa

Angola, Botswana, Burundi, Democratic Republic of Congo, Equatorial Guinea (incl. Bioko), Guinea, Kenya, Malawi, Mozambique, Senegal, South Africa, Swaziland, Tanzania , Zambia, Zimbabwe.

Growth form

Terrestrial.

Literature

  • Burrows, J.E. (1990) Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 270 - 272. (Includes a picture).
  • Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011) Ferns of Southern Africa, A comprehensive guide. Struik Nature. Pages 700 - 701. (Includes a picture).
  • Jacobsen, W.B.G. (1983) The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 398 - 399. (Includes a picture).
  • Kornas, J. (1979) Distribution and ecology of the Pteridophytes in Zambia. Polska Akademia Nauk Wydzial II Nauk Biologicznych. Pages 93 - 94.
  • 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 201.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Pages 113 - 114. (Includes a picture).
  • Schelpe, E.A.C.L.E. (1970) Pteridophyta. Flora Zambesiaca, 0 Pages 200 - 202. (Includes a picture).
  •