FIGURE 15 in Taxonomy of epilithic diatoms and teratological forms under the presence of metals in surface sediment

FIGURE 15. Epilithic diatoms from Cascavel River micro-watershed in SEM. A. Pinnularia acoricola. B. Chamaepinnularia brasilianopsis. C–D. Sellaphora nigri, internal and external views. E. S. saugerresii. F. Navicula cryptocephala. G. N. salinicola. H–I. N. symmetrica, external and internal views. Scale bars: 2 µm (Figs A–E, G), 5 µm (Figs F, H–I).