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New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa
Van de Vijver, B.; Mataloni, G.; Stanish, L.; Spaulding, S.A. (2010). New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa. Phycologia 49(1): 22-41. https://dx.doi.org/10.2216/09-27.1
In: Phycologia. International Phycological Society: Odense. ISSN 0031-8884; e-ISSN 2330-2968, meer
Peer reviewed article  

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  • Van de Vijver, B.
  • Mataloni, G.
  • Stanish, L.
  • Spaulding, S.A.

Abstract
    During a survey of the terrestrial diatom flora of some sub-Antarctic islands in the southern Indian and Atlantic Oceans and of the Antarctic continent, more than 15 taxa belonging to the genus Muelleria were observed. Nine of these taxa are described as new species using light and scanning electron microscopy. Comments are made on their systematic position and how they are distinguished from other species in the genus. Additionally, two previously unrecognized taxa within the genus were discovered in samples from South Africa. One of these, Muellcria taylorii Van de Vijver & Cocquyt sp. nov., is new to science; the other, Muelleria vandermerwei (Cholnoky) Van de Vijver & Cocquyt nov. comb., had been included in the genus Diploneis. The large number of new Muelleria taxa on the (sub)-Antarctic locations is not surprising. Species in Muelleria occur rarely in collections; in many habitats, it is unusual to find more than 1-2 valves in any slide preparation. As a result, records are scarce. The practice of "force-fitting" (shochorning) specimens into descriptions from common taxonomic keys (and species drift) results in European species, such as M. gibbula and M. linearis, being applied to Antarctic forms in ecological studies. Finally, the typical terrestrial habitats of soils, mosses and ephemeral water bodies of most of these taxa have been poorly studied in the past.

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