http://dx.doi.org/)
Lectotypes are selected and illustrated for seven names of diatom species described by Ehrenberg in 1840 from Greece: Amphitetras antediluviana, Epithemia hellenica (Eunotia hellenica), Lyrella praetexta (Navicula praetexta), Rhopalodia graeca (Cocconema graecum), Stictodiscus parallelus (Amphitetras? parallela), Triceratium favus and T. pileus. This includes the type of the genera Amphitetras and Triceratium. New combinations are validated for Epithemia hellenica and Rhopalodia graeca.