FIGURE 7 in New and interesting aerial diatom assemblages from southwestern Iceland

FIGURE 7. Light (C–I) and SEM (A–B, J–L) microscopy images of aerial diatom assemblages from southwestern Iceland. A–E. Humidophila biceps: A–B external, valve view showing external expression of areolae, distal raphe endings, and proximal raphe endings with adjacent depressions (arrow). C–E. valve view; F–L. Humidophila perpusilla: F–I. size series in valve view, and J–L. external view of valve and tilted frustule showing valve and girdle views. Note depressions flanking proximal raphe ends (arrow). M–P. Humidophila parallela: valve view. P. external view showing hints of T-shaped proximal and distal raphe endings. LM scale bar = 10 μm, SEM scale bars as shown.