OBSERVATIONS ON TAXA OF MELOSIRA SENSU LATO AMONG THE SLIDES FROM THE GRUNOW DIATOM COLLECTION IN VIENNA (AUSTRIA). PART 1

摘要

The taxa belonging earlier to the diatom genus Melosira from slides in the Grunowcollection at the Natural History Museum in Vienna, were investigated using the lightmicroscope (LM). Raw material related to several slides were also found and observed usingthe scanning electron microscope (SEM). According to valve morphology some were foundto belong to other taxa and so several new combinations are given. This contribution dealswith taxa that are mostly neglected in contemporary literature and also brings some oldnames back into general use. Several Aulacoseira taxa are presented here showing morevalve pattern variability therefore emending LM and SEM-pictures presented by otherauthors.