Taxonomic and biogeographical notes on Okavango desmids (Zygnematophyceae, Streptophyta)
Systematics and Geography of Plants
Faculty of Science (FNWI)
Institute for Biodiversity and Ecosystem Dynamics (IBED)
In October 2007, a selection of water bodies in the Okavango Delta (Botswana) and the southwestern part of the Zambezi Basin
(Namibia) were sampled for desmid algae. In this paper 27 taxa belonging to the genera Penium, Closterium, Pleurotaenium,
Triplastrum, Tetmemorus, Euastrum and Micrasterias are separately discussed and figured. Five taxa are newly described: Closterium
okavangicum, Tetmemorus euastroides var. africanus, Euastrum attenuatum var. groenbladii, Euastrum okavangicum and Euastrum
sudanense. The names of five taxa are newly given or recombined: Euastrum africanum, Euastrum compereanum, Euastrum fritschii,
Euastrum scottii and Micrasterias schmidleana. The majority of the taxa discussed can be characterized as African endemics.
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