Abstract
Navicula novaesiberica Lange-Bertalot was recorded for the first time on the Hungarian stretch of the Danube River. The species was found in low relative abundance values in the epilithon at Göd (riv.km. 1669). N. novaesiberica was described more than ten years ago, it is a relatively large and conspicuous species. However, there are only a few records of it in the literature. Some additional details on the morphology and autoecology of this species are provided here.
Keywords: