Original Research

Studies in the genus Riccia (Marchantiales) from southern Africa. 8. R. campbelliana (subgenus Riccia), newly recorded for the region

S. M. Perold, O. H. Volk
Bothalia | Vol 18, No 1 | a979 | DOI: https://doi.org/10.4102/abc.v18i1.979 | © 1988 S. M. Perold, O. H. Volk | This work is licensed under CC Attribution 4.0
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 Africa
O. H. Volk, Botanische Anstalten d. Univ. Wurzburg, Germany

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Abstract

R. campbelliana Howe (1899), a rare species originally known from California and later from Georgia, Arkansas (Jacobs 1951; Wittlake 1954), Kansas and Nebraska (S. Jovet-Ast pers. comm.), as well as from Kazakhstan (Ladyzhenskaja 1967), has now also been found at a few localities in southern Africa. It is characterized by the distinctive yellow-brown or rusty colouration of the dorsal surface along the margins and over the proximal parts; enlarged cells, ‘idioblasts', which differ in shape and contents from the adjacent cells, are generally found in all parts of the thallus.


Keywords

anatomy; ‘idioblasts’; Marchantiales; <i>Riccia campbelliana</i>; southern Africa; spores

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