Original Research

Studies in the liverwort genus Riccia (Marchantiales) from the south-west Cape

O. H. Volk, S. M. Perold
Bothalia | Vol 15, No 1/2 | a1110 | DOI: https://doi.org/10.4102/abc.v15i1/2.1110 | © 1984 O. H. Volk, S. M. Perold | This work is licensed under CC Attribution 4.0
Submitted: 29 October 1984 | Published: 06 December 1984

About the author(s)

O. H. Volk, Botanische Anstalten d. Univ, Germany
S. M. Perold, Botanical Research Institute, Department of Agriculture, South Africa

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A new species of Riccia, R. parvo-areolata Volk & Perold, as well as sporophytes and spores of R. villosa Steph. ex Brunnthaler, are described. Earlier descriptions of R. villosa were based on sterile plants. The unique structure of the dorsal epithelium consisting of loose cell pillars in these two species (and also present in allied species grouped together in the section Pilifer) is described and illustrated.


dorsal epithelium; Pilifer; Riccia species; spores; sporophytes


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