FIGURES 20–34 in Taxonomic studies of the diatom genus Halamphora (Bacillariophyceae) from the mountainous regions of southwest China, including the description of two new species

FIGURES 20–34. Halamphora hezhangii, sp. nov. 20–27. LM. Valve views showing size diminution series. Figure 24 is of the holotype. Scale bars = 10 μm for all LM figures. 28–34. SEM. 28, 30–32. External views. 28. Entire valve showing shape of the valve. 30. Show of dash–like areolae composed of biseriate, which distinctly in several rows of axial areolae near the raphe ledge. 31. View of central area with curved proximal raphe. 32. View of curved distal raphe end. 29, 33, 34. Internal views. 29. Entire valve view. 33. Central area with a narrow central helictoglossae. 34. View of valve end, with curved distal raphe ends and helictoglossa. Scale bars show in each SEM figure.