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Studies in the genus Riccia (Marchantiales) from southern Africa. 9. R. nigrella and the status of R. capensis
Bothalia | Vol 18, No 1 | a980 |
DOI: https://doi.org/10.4102/abc.v18i1.980
| © 1988 S. M. Perold, O. H. Volk
| This work is licensed under CC Attribution 4.0
Submitted: 21 October 1988 | Published: 23 October 1988
Submitted: 21 October 1988 | Published: 23 October 1988
About the author(s)
S. M. Perold, Botanical Research Institute. Department of Agriculture and Water Supply, South AfricaO. H. Volk, Botanische Anstalten d. Univ. Wurzburg, Germany
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R. nigrella DC. (Lamarck & De Candolle 1815), with which R. capensis auct. non Steph.: S. Amell (1952, 1963), is conspecific, is now also recognized from southern Africa. The thallus is brown marginally and dorsally and has shiny black scales with smooth margins at which coloured and hyaline cells alternate irregularly. Arnell's (1961) records of R. capensis Steph. from the Canary Islands are to be regarded as erroneous. R. capensis Steph. (Stephani in Brunnthaler 1913) is now placed in synonymy under R. limbata Bisch.
Keywords
distribution; Marchantiales; <i>Riccia capensis</i>; <i>R. nigrella</i>; southern Africa; spores
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