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Kützing described the species  Achnanthes capensis  Kützing along with the variety  Achnanthes capensis  ß  multiarticulata  Kützing. The latter was based on ‘ Achnanthes striata  Suhr’, a name first mentioned, without description or figure, in Drège’s  Zwei pflanzengeographische Documente . ‘ Achnanthes striata ’ became a synonym of  Achnanthes capensis  in Kützing’s protologue without it ever being validly published. All original specimens of  Achnanthes capensis ,  A. capensis  ß  multiarticulata  and  A. striata  are from Table Bay, Cape Province, Cape of Good Hope, South Africa. This account describes specimens from original material for all three names in  Achnanthes  and clarifies their relationships. As no morphological differences among these three named taxa could be found based on light and scanning electron microscopy observations, we place the other two names into  A .  capensis , as this name has priority. In short,  A .  capensis  ß  multiarticulata  and  A .  striata  are synonyms of  Achnanthes capensis .

diatom research

Studies on type material from Kützing’s diatom collection VII:  Achnanthes capensis  Kützing,  Achnanthes capensis  ß [var.]  multiarticulata  Kützing and ‘ Achnanthes striata  Suhr’