CONCERNING THE MORPHOLOGY OF SELLAPHORA BACILLUM (BACILLARIOPHYTA)

The morphological features of the valves of the diatom Sellaphora bacillum were studied using scanning electron microscopy. Epipsammon and periphyton from rocks on the bottom of the Kilmez River (Udmurt Republic) were used. Quantitative (the length and width of the valve, the number of striae in 10µm) and qualitative (the shape of the valve and axial area, the location of the striae, the raphe) features were studied. The data obtained and the literature information made it possible to specify the description of the species.