FIGURE 6 in New and interesting aerial diatom assemblages from southwestern Iceland

FIGURE 6. Light (A–E) and SEM (F–J) microscopy images of aerial, diatom population of Eunotia curtagrunowii from southwestern Iceland. A–C. valve view size diminution series and D–E. girdle view with different focuses, F. internal view showing helictoglossa and internal opening of areolae with a close up of the apex of the same valve in I. to show the internal expression of the rimoportula (arrow), G. close up of valve apex with external opening to the rimoportula (arrow), H. external view, showing arrangement of striae and raphe ends on the valve face, note the markings along the ventral edge of the valve face, J. tilted girdle view showing cingulum. LM scale bar = 10 μm, SEM scale bars as shown.