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41 results for “Eunotiaceae”
FIGURES 1–15 in Eunotia pottieziana, a new diatom (Eunotiaceae, Bacillariophyta) species found in a tropical aquarium
FIGURES 1–15. Eunotia pottieziana Van de Vijver sp. nov. LM images of specimens taken from the holotype sample (BR-4816, tropical freshwater aquarium, Belgium). 1–2. LM views of two short chains in girdle view observed in untreated material. 3. LM view of the ventral side of a frustule showing the raphe branches. 4–15. LM valve views of specimens of the type population arranged in decreasing length. Scale bar = 10 µm.
FIGURES 1 in A new genus and species in the diatom family Eunotiaceae Kützing (Bacillariophyceae) from the Amazonian hydrographic region, Brazil
FIGURES 1: A–E. Light microscopy, Valve views. Figure 1B is of the holotype. Figures 1A-C are typical valves. Figures 1D, 1E are of deformed valves. Scale bar = 20 µm.
FIGURES 4A–E. SEM, valve interior. Fig. 4A in A new genus and species in the diatom family Eunotiaceae Kützing (Bacillariophyceae) from the Amazonian hydrographic region, Brazil
FIGURES 4A–E. SEM, valve interior. Fig. 4A. Valve view. Scale bar = 20 µm. Figs 4B-D showing apex of valve with raphe branch, helictoglossa and rimoportulae evident. Fig. 4E. Central portion of the valve with interruption of striae evident in the center of the valve. Scale bars = 2 µm for figures 4B–D.
FIGURE 5 in A new genus and species in the diatom family Eunotiaceae Kützing (Bacillariophyceae) from the Amazonian hydrographic region, Brazil
FIGURE 5. Phylogenetic hypothesis of the evolutionary relationships within the Eunotiophycidae, and to other pennate groups. Short, horizontal bars indicate putative synapomorphies for the particular level of evolutionary branching.
FIGURES 3A–C. SEM, valve exterior. Figs 3A, 3B in A new genus and species in the diatom family Eunotiaceae Kützing (Bacillariophyceae) from the Amazonian hydrographic region, Brazil
FIGURES 3A–C. SEM, valve exterior. Figs 3A, 3B are of the valve apex showing the raphe, presence of siliceouis nodules and spinules on the valve face and external openings of rimoportulae. Fig. 3C. Valve center showing sternum positioned about at the center of the valve. Areolae are small, round. Scale bars = 2 µm for all figures.
FIGURES 2A–E in A new genus and species in the diatom family Eunotiaceae Kützing (Bacillariophyceae) from the Amazonian hydrographic region, Brazil
FIGURES 2A–E. Light microscopy of valve detail. Figs 2A-C show end of valve with rimoportulae present. Figs 2A and 2B are of typical valves, figs 2C and 2D are of deformed valves. Fig. 2E is taken in the valve center. Scale bars = 10 µm.
FIGURES 18–23. Eunotia relicta. SEM images. Fig. 18 in A new uncommon epilithic Eunotia (Bacillariophyceae, Eunotiaceae) from the Chapada Diamantina region, Northeast Brazil
FIGURES 18–23. Eunotia relicta. SEM images. Fig. 18. Valve apices showing conical spine and drop-shaped terminal raphe endings. Figs 19, 20. Detail of the mantle striation pattern. Note the closer striae in the apices. Fig. 21. General view of internal valve. Figs 22–23. Detail of valve apices internally. Note the presence of well-developed rimoportulae at both extremities. Note the cell wall internally thickened at the apical regions. Scale bars: 5 µm for figures 18, 20, 22 and 23; 2 µm for figure 19; 10 µm for figure 21.
FIGURES 2–12 in A new uncommon epilithic Eunotia (Bacillariophyceae, Eunotiaceae) from the Chapada Diamantina region, Northeast Brazil
FIGURES 2–12. Eunotia relicta. LM and SEM images. Figs 2–5, 6–10. Valve view showing general patterns of valve outline, apices and striae. Fig. 11. Girdle view showing ventral margins, mantle and girdle bands. Note the whole frustule showing deflection of valve faces, laterally visible. Note also the raphe branches and central nodules at the mantle. Fig. 12. External valve face showing an irregular surface and striae. Note the striae not interrupted in the dorsal side, continuing onto the valve mantle. Observe the raphe branches entering the valve face in the ventral side, and the conical spines at valve apices. Scale bars: 20 µm for figures 2–11; 10 µm for figure 12.
FIGURES 13–17. Eunotia relicta. SEM images. Fig. 13 in A new uncommon epilithic Eunotia (Bacillariophyceae, Eunotiaceae) from the Chapada Diamantina region, Northeast Brazil
FIGURES 13–17. Eunotia relicta. SEM images. Fig. 13. Girdle view showing girdle bands in the dorsal valve side. Fig. 14. Detail of valve face and mantle. Note the thickened and irregular transapical interstriae between groups of striae. Fig. 15. Details of striation pattern of girdle bands. Fig. 16. Valve face view showing irregular surface. Note the interstriae and spines in the apices. Fig. 17. Girdle view showing girdle bands broader at the dorsal side. Note the amphoroid frustule symmetry. Scale bars: 10 µm for figures 13, 14, 16 and 17; 2 µm for figure 15.
FIGURES 58–64 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 58–64. Eunotia parabidens from Patos Lake sediment samples, Upper Paraná River floodplain, Brazil. 58–63. LM. 64. SEM, external view of valve. Scale bars = 10 μm.
FIGURES 45–50 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 45–50. LM micrographs of Eunotia neomundana from Patos Lake sediment, Upper Paraná River floodplain, Brazil. Scale bar = 10 μm.
FIGURES 51–57 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 51–57. Eunotia papilio from Patos Lake sediment samples, Upper Paraná River floodplain, Brazil. 51–56. LM. 57. SEM, external view of valve. Scale bars = 10 μm.
FIGURES 37–44 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 37–44. Eunotia monodon from Patos Lake and Garças Lake sediment samples, Upper Paraná River floodplain, Brazil. 37–43. LM. 44. SEM, external view of valve. Scale bars = 10 μm.
FIGURES 20–29 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 20–29. Eunotia deformis from Patos Lake and Garças Lake sediment samples, Upper Paraná River floodplain, Brazil. 20–28. LM. 29. SEM, external view of valve. Scale bars = 10 μm.
FIGURES 12–19 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 12–19. Eunotia deficiens from Patos Lake and Garças Lake sediment samples, Upper Paraná River floodplain, Brazil. 12–18. LM. 19. SEM, external view of valve. Scale bars = 10 μm.
FIGURES 9–11 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 9–11. SEM images of Eunotia nupeliana sp. nov. from type material, Patos Lake sediment, Upper Paraná River floodplain, Brazil. External views of valves. Type population (Nupélia UEM! 18099). Scale bars = 10 μm.
FIGURES 2–8 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURES 2–8. LM images of Eunotia nupeliana sp. nov. from type material, Patos Lake sediment, Upper Paraná River floodplain, Brazil. 2. Holotype specimen 3–8. Type population (Nupélia UEM! 18099). Scale bars = 10 μm.
FIGURE 1 in A new uncommon epilithic Eunotia (Bacillariophyceae, Eunotiaceae) from the Chapada Diamantina region, Northeast Brazil
FIGURE 1. Localization of Chapada Diamantina region, Bahia State, Northeast Brazil.
FIGURE 1 in Eunotia Ehrenberg (Eunotiaceae, Bacillariophyta) in a subtropical floodplain: a new species and taxonomic contributions
FIGURE 1. Study area in the Upper Paraná River Floodplain showing the Garças and Patos lakes.
FIGURES 82–84 in The identity of Eunotia paludosa Grunow 1862 (Eunotiaceae, Bacillariophyta), a revision, and the description of three new species of Eunotia Ehrenberg
FIGURES 82–84. Eunotia sphagnicola Van de Vijver, A.Mertens & Lange-Bertalot, sp. nov. SEM images taken from the holotype material (sample D283, Egelmeer, Veenendaal, the Netherlands). Fig. 82. External view of a frustule in girdle view showing the ventral side with the raphe branches. Fig. 83. SEM external view in valve face view showing the short terminal raphe fissures and the absence of spines. Fig. 185. Internal view in valve face view. The arrow indicates the rimoportula. Scale bars indicate 10 µm.
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