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82 results for “Eunotia”
FIGURES 40–48 in Three new Eunotia (Bacillariophyta) species from Acadia National Park, Maine, USA
FIGURES 40–48. Eunotia novaeangliae sp. nov., external views, SEM. Figs 40–42, 43–46 and 47–48 each represent the same specimen. Figs 40, 43, 47 Whole valves in valve or oblique views. Figs 40–44, 46–48 Distinctive character of the raphe, which is situated mostly on the valve mantle and terminates on the valve face only with a very short slit (expanding to less than 1/5 of the valve width). Figs 41, 46 Details of the apices with openings to rimoportulae. Figs 42, 44, 48 Apices without rimoportula apertures. Fig. 45 Detail of the externally occluded
FIGURES 1–39 in Three new Eunotia (Bacillariophyta) species from Acadia National Park, Maine, USA
FIGURES 1–39. Size reduction series of Eunotia novaeangliae sp. nov., LM. Figs 1–34 Valve views. Fig. 6 Photograph of the isotype specimen (Is). Fig. 10 Photograph of the holotype specimen (H). Figs 35–39 Frustules in girdle views, with noticeably long raphe slits. Pairs of photographs representing the same specimen in different focal planes are marked with "=". Scale bar = 10 µm.
FIGURES 49–55 in Three new Eunotia (Bacillariophyta) species from Acadia National Park, Maine, USA
FIGURES 49–55. Eunotia novaeangliae sp. nov., internal views, SEM. Figs 49–51 and 52–53 each represent the same specimen. Figs 49, 52, 54, 55 Whole valves. Figs 50, 51, 53 Details of internally unoccluded areolae and thickened helictoglossa structures with two expanding ribs to the opposite side of the valve. Fig. 50 Apex without a rimoportula. Figs 51, 53 Details of apices with rimoportulae. Scale bars = 1 µm.
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.
Figures 1- 2 from: Bukhtiyarova LN (2019) The genus Eunotia Ehrenb. (Bacillariophyta) in the Cheremsky Nature Reserve, Ukrainian Polissya, and refined terminology relevant to the raphe system morphology. PhytoKeys 128: 1-31. https://doi.org/10.3897/phytokeys.128.35566
Figures 1- 2 - Location of the studied area 1 The Cheremsky Nature Reserve on the map of Ukraine, indicated by red dot 2 map-scheme of the Cheremsky Nature Reserve.
Figures 7-12a from: Bukhtiyarova LN (2019) The genus Eunotia Ehrenb. (Bacillariophyta) in the Cheremsky Nature Reserve, Ukrainian Polissya, and refined terminology relevant to the raphe system morphology. PhytoKeys 128: 1-31. https://doi.org/10.3897/phytokeys.128.35566
Figures 7-12a - New and rare in Ukraine species of Eunotia Ehrenb. from the Cheremsky Nature Reserve. 7–8a Eunotia julma Lange-Bert. in Lange-Bertalot et al., arrow indicates distal end of raphe slit, double arrow – funnel-like lacuna, terminal fissure is between the arrows 9 Eunotia sp. 1 (cf E. formica Ehrenb.) 10, 11 Eunotia formicina Lange-Bert. in Lange-Bertalot et al. 12, 12a Eunotia jarensis Lange-Bert. et al., arrow indicates rimoportula. Figs 7, 9–11 LM 8, 8a outside valve surface 12, 12a inside valve surface, SEM. Scale bars: 10 µm (7–17); 3 µm (8a); 2 µm (12a).
Figures 4-6b from: Bukhtiyarova LN (2019) The genus Eunotia Ehrenb. (Bacillariophyta) in the Cheremsky Nature Reserve, Ukrainian Polissya, and refined terminology relevant to the raphe system morphology. PhytoKeys 128: 1-31. https://doi.org/10.3897/phytokeys.128.35566
Figures 4-6b - New in Ukraine species Eunotia genuflexa Nörpel-Schempp in Lange-Bertalot and Metzeltin, outside valve surface, SEM. Arrows indicate distal ends of raphe slits, double arrows – funnel-like lacunae, terminal fissures are between the arrows. Scale bars: 10 µm (4–6); 2 µm (4a, 5a, 6a); 1 µm (6b).
Figures 13-27 from: Bukhtiyarova LN (2019) The genus Eunotia Ehrenb. (Bacillariophyta) in the Cheremsky Nature Reserve, Ukrainian Polissya, and refined terminology relevant to the raphe system morphology. PhytoKeys 128: 1-31. https://doi.org/10.3897/phytokeys.128.35566
Figures 13-27 - New and rare in Ukraine species of Eunotia Ehrenb. from Ukrainian Polissya and the Lectotypes of two Eunotia species. 13, 13a Eunotia pseudoflexuosa Hust., arrow indicates rimoportula at the middle of pole where raphe slit distal end finishes on the outer valve surface, double arrow – position of terminal fissure distal end on the outer valve surface, between the arrows – hyaline field from inside valve surface where the terminal fissure is located on the outer valve surface 14 Eunotia ruzickae Bílý & Marvan 15, 16 Eunotia implicata Nörpel-Schempp et al. Lectotype: 15 = Eunotia impressa var. angusta Grunow in Van Heurck 1881: pl. 33/fig. 22, designated here 17, 17a Eunotia sp. 2 ( cf. mongolica Kulikovskiy et al.) 18–20 Eunotia sp. 3 (cf. Eunotia paludosa Grunow) 21–23 Eunotia incisa W. Smith ex Gregory. Lectotype: 23 = Eunotia incisa W. Smith ex Gregory 1854: pl. 4/fig. 4, designated here 24 Eunotia sp. 4 (cf. Eunotia intermedia (Krasske ex Hustedt) Nörpel & Lange-Bert.) 25–27 Eunotia sp. 5 (cf. Eunotia meridiana Metzeltin & Lange-Bert.). Figs 13, 17, 18 SEM: 13, 13a inside valve surface 17, 17a, 18 outside valve surface; 19–28 LM. Scale bars: 10 µm (13–17, 19–27); 5 µm (18); 1 µm (13a, 17a).
Figure 3 from: Bukhtiyarova LN (2019) The genus Eunotia Ehrenb. (Bacillariophyta) in the Cheremsky Nature Reserve, Ukrainian Polissya, and refined terminology relevant to the raphe system morphology. PhytoKeys 128: 1-31. https://doi.org/10.3897/phytokeys.128.35566
Figure 3 - Scheme of the mirror-symmetric, mantle-offset, brevisslit raphe system in frustule of the genus Eunotia Ehrenb. A valve view, different parts of valve. TA – transapical axis. Central part – between the arrows, middle part – between upper and double arrows, the beginning of valve pole – double arrow B girdle view, arrow – central raphe pore C, D raphe system without terminal fissures C arrow – a pore outer at distal end of slit, that finishes at the middle of valve pole D arrow – a funnel-like outer at distal end of slit, that finishes at the venral corner of valve pole E, F raphe system with terminal fissures – dotted lines between arrows, arrow – distal end of a slit E double arrow – the end of terminal fissure F double arrow – lacuna at the end of terminal fissure. (Original by L. Bukhtiyarova)
Figures 28-35 from: Bukhtiyarova LN (2019) The genus Eunotia Ehrenb. (Bacillariophyta) in the Cheremsky Nature Reserve, Ukrainian Polissya, and refined terminology relevant to the raphe system morphology. PhytoKeys 128: 1-31. https://doi.org/10.3897/phytokeys.128.35566
Figures 28-35 - Species of Eunotia Ehrenb. from the Cheremsky Nature Reserve. 28, 28a, 29 Eunotia dorofeyukiae Lange-Bert. & Kulikovskiy 28a arrow indicates pore outer on the raphe slit distal end 29 arrow indicates rimoportula at the venral corner of pole where raphe slit distal end finishes on the outer valve surface 30, 30a Eunotia neocompacta S. Mayama 30a arrow indicates rimoportula at the venral corner of pole, absence of a hyaline field indicates absence of terminal fissure 31 Eunotia praerupta Ehrenb. 32 Eunotia sp. 6. 33 Eunotia sp. 7. 34, 35 Eunotia tetraodon Ehrenb. Figs 28–31 SEM: 28, 28a outside valve surface; 29–31 inside valve surface; 32–35 LM. Scale bars: 5 µm (28, 29, 30); 2 µm (28a); 1 µm (30a); 10 µm (31–34).
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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