Cheilanthes - Sinopteridaceae

Cheilanthes leachii (Schelpe) Schelpe

Photo: BT. Wursten
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

Notholaena leachii Schelpe

Common name

Description

Rhizome shortly creeping to erect, up to 4 mm in diameter; rhizome scales linear-lanceolate in outline, c. 5 mm long, (yellow-)brown often with a dark central stripe. Fronds monomorphic, tufted, suberect, up to 31 cm long, proliferous at the apex, occasionally on costae of basal pinnae. Stipe up to 23 cm long, dark brown to almost black when mature, more or less with thin, brown, hairlike scales when young, later hairless. Lamina 2-pinnatifid to 2-pinnate, sometimes 3-pinnatifid on the lower basiscopically developed pinnae, oblong-ovate to lanceolate in outline, 3-11 × 1.8-5.5 cm; pinnae in 3-6 pairs, ovate or triangular in outline, somewhat widely spaced, 0.7-5 x 0.7-4 cm, both surfaces set with scattered, long, rusty-coloured hairs; venation obscure; rhachis as for stipe. Sori small, marginal; indusium pale brown, membranous, continuous and very narrow, entire or erose, inconspicuous.

Notes

May be mistaken for C. inaequalis which is non-proliferous.

Derivation

leachii: named after L.C. Leach of the National Herbarium in Zimbabwe. He accompanied Prof. Schelpe in 1962 on an expedition to nothern Mozambique, where the type specimen was collected.

Habitat

Rock crevices and boulder bases, among grasses and sedges near streams, at vegetation islands on granite whalebacks.

Distribution worldwide

See African distribution.

Distribution in Africa

Malawi, Mozambique, Tanzania , Zambia, Zimbabwe.

Growth form

Lithophytic, terrestrial.

Literature

  • Burrows, J.E. (1990) Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 129 - 130. (Includes a picture).
  • Jacobsen, W.B.G. (1983) The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 254 - 255. (Includes a picture).
  • Kornas, J. (1979) Distribution and ecology of the Pteridophytes in Zambia. Polska Akademia Nauk Wydzial II Nauk Biologicznych. Pages 50 - 51.
  • 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 183.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Page 64.
  • Schelpe, E.A.C.L.E. (1970) Pteridophyta. Flora Zambesiaca, 0 Pages 125 - 126.
  • Verdcourt, B. (2002) Adiantaceae. Flora of Tropical East Africa, Page 37.
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