Diatoms from Akan-ko (Lake Akan) in Hokkaido, Japan. 5. Raphid diatoms: Aneumastus，Craticula，Diatomella，Diploneis，Frustulia，Gyrosigma，Luticola，Neidium，Sellaphora，Stauroneis

Abstract

In this paper, a continuation of four previous papers, 28 taxa belonging to the genera Aneumastus, Craticula, Diatomella, Diploneis, Frustulia, Gyrosigma, Luticola, Neidium, Sellaphora and Stauroneis are reported with light and scanning electron microscope photographs. Some comments are made mostly on the taxonomy and morphology of each taxon.