Die Identität von Gomphonema entolejum Østrup (Bacillariophyceae) sowie Revision ähnlicher Arten mit weiter Axialarea
This paper presents a revision of some Gomphonema taxa characterized by a wide axial area, short (marginal) striae composed of single rows of areolae and the presence of a stigma near the central nodule. Since the identity of the classical species G. brachyneurum, G. clevei, G. entolejum and G. frickei remained unknown, misinterpretations and incorrect species concepts have led to the wrong assumption that these species (may) belong to one taxon which was mainly called G. clevei. Accordingly, data on their distribution are misleading. With the exception of G. clevei the identity of the other classical taxa could be clarified with the help of type specimens or original material. They proved to be independent species with a more restricted distribution than suggested so far. The same applies to G. clevei var. javanica which was raised to species rank with the new name G. sundaense. In addition four species are described as new (G. hawaiiense, G. moresbyanum, G. pyrenaicum, G. siamense) and some other similar Gomphonemata are presented with additional data and/or micrographs.
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Document Type: Research Article
Publication date: 2005-08-01
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- Nova Hedwigia is an international journal publishing original, peer-reviewed papers on current issues of taxonomy, morphology, ultrastructure and ecology of all groups of cryptogamic plants, including cyanophytes/cyanobacteria and fungi. The half-tone plates in Nova Hedwigia are known for their high quality, which makes them especially suitable for the reproduction of photomicrographs and scanning and transmission electron micrographs.
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