Anissimova, O.V., 2021. European flora of the desmid genus Euastrum — Special studies on the cell wall ornamentation. KMK Scientific Press Ltd., Moscow, 109 pp. Focus in the above-mentioned publication is on cell wall sculpturing as found in 45 European Euastrum species. SEM-pictures illustrating specific differences in ornamentation are of extreme good quality and may facilitate identification of light microscopically hard to distinguish taxa. Based on different types of ornaments, especially scrobicles, seven species groups are differentiated, some of which being more credible than other ones. As adequate species diagnoses and identification keys are wanting, the paper in question may be characterized as an atlas rather than a traditional flora. Yet, it is a most valuable contribution to our knowledge of European Euastrum species. A pdf of the paper in question is free available: