FIGURES 22–34 in New and rare diatom (Bacillariophyta) species from a mountain lake in Eastern Siberia

FIGURES 22–34: Brachysira species. Figs 22–28, 33, 34. B. subtile, sp. nov. Figs 22–28. LM. Fig. 23. Holotype specimen. Figs 33, 34. SEM. Fig. 33. Internal valve view. Fig. 34. External valve view. Figs 29, 30. B. styriaca, LM. Figs 31, 32. B. zellensis, LM. Scale bar in Fig. 22 = 10 µm for all LM figures, in Figs 33, 34 = 5 µm.