Cheilanthes - Sinopteridaceae

Cheilanthes pentagona Schelpe & N.C. Anthony

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

Photo: P. Ballings
Zimbabwe

 

 

 

 

Synonyms

Common name

Description

Rhizome creeping, up to 3 mm in diameter; rhizome scales reddish brown with dark central stripe, lanceolate in outline, margin entire. Fronds closely spaced, erect, herbaceous to coriaceous, grey to midgreen. Stipe dark brown to almost black, up to 15 cm long, glabrous but with few brown scales at the base. Lamina 3.5-11 cm × 3.5-11 cm, strongly pentagonal in outline, 3-pinnatifid to 4-pinnatifid on the basal pinnae; lowest pinnae basiscopically developed. Pinnae with venation apparent on both surfaces, both surfaces glabrous, margins wavy to shallowly lobed. Rhachis very dark brown to almost black, hairless, shiny. Sori small, marginal, discrete; indusium small, discontinuous, pale, subentire to erose, membranous.

Notes

Could be confused with C. bergiana or mostly with C. multifida. C. bergiana is lightly hairy, has underground stolons and is a forest species. C. multifida differs in having brown rhizome scales, a lamina that is more dissected (3- to 5-pinnatifid), broadly ovate-deltate in outline and with obscure venation.

Derivation

pentagona: having 5 angles, referring to the pentagonal outline of the fronds.

Habitat

At the base of rocks and in crevices or in full sun, on serpentine.

Distribution worldwide

Distribution in Africa

Angola, Namibia, South Africa, Zimbabwe.

Growth form

Lithophytic, terrestrial.

Literature

  • Burrows, J.E. (1990) Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 152 - 154. (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 404 - 405. (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 184.
  • Roux, J.P. (2001) Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report, 13 Page 65.
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