FIGURES 14–18. Diploneis hoevsgoelensis morphotype 1, SEM internal valve views. Fig. 14 in The genus Diploneis Ehrenberg ex Cleve (Bacillariophyta) from Lake Hövsgöl, Mongolia

FIGURES 14–18. Diploneis hoevsgoelensis morphotype 1, SEM internal valve views. Fig. 14. View of the whole valve. Fig. 15. Central area with simple proximal raphe endings. Fig. 16. Distal raphe endings. Fig. 17. Structure of the single elongate opening of the alveolus. Fig. 18. Alveoli covered with thin layer of perforate silica. Scale bars = 10 μm (Fig. 14); 5 μm (Figs 15, 16); 2 μm (Fig. 17); 1 μm (Fig. 18).