Zur Revision der Gattung Gomphonema

This book presents a revision of four gomphonemoid taxa, amongst them many widespread, frequent or important species. An extensive iconography of nearly 1100 figures shows ranges of variation as well as morphological details of the diatoms discussed. Altogether 47 species, 1 subspecies. 3 varieties and 2 „morphotypes“ are treated. 21 species, 1 subspecies and 1 variety are described for the first time and depicted in numerous light microscopic (LM) and electron microscopic (SEM) figures. All the new taxa can be distinguished under a light microscope and with the exception of one fossil diatom they all were found outside the type-locality, too.