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49 results for “Pinnularia”
FIGURES 59–64 in Pinnularia baetica sp. nov. (Bacillarophyceae): Comparison with other panduriform species in the Mediterranean area
FIGURES 59–64. Pinnularia infirma Krammer. Scanning electron micrographs of the population collected in Ouiouane, Morocco. (59) external valvar view; (60) internal valvar view; (61) external view of the apex, showing the distal raphe hooked endings; (62) external central nodule bent on one side; (63) external rows of each alveoli; (64) Girdle view. Scale bars 5 μm (59–61); 1 μm (62–63); 10 μm (64).
FIGURES 2–18 in Pinnularia sikkimensis sp. nov. (Bacillariophyceae), from Eastern Himalayas and its distribution in Southeast Asia
FIGURES 2–18. Light microscope images of Pinnularia sikkimensis sp. nov. Valve view showing the size diminution series. Figs 2–8, Samples from India. Figs 9–18, Samples from Vietnam. Figs 9, 12–14, 17 from slide no 00319; Figs 10, 11, 15, 18 from slide no 02084. Scale bar: Figs 2 –18: 10 µm.
FIGURE 1 in Pinnularia sikkimensis sp. nov. (Bacillariophyceae), from Eastern Himalayas and its distribution in Southeast Asia
FIGURE 1. Map showing the type locality of Pinnularia sikkimensis sp. nov. and its distribution in Vietnam.
FIGURES 25–29 in Pinnularia sikkimensis sp. nov. (Bacillariophyceae), from Eastern Himalayas and its distribution in Southeast Asia
FIGURES 25–29. Pinnularia sikkimensis sp. nov. SEM. 25. Internal view of a whole valve. 26, 27. Internal view of poles showing the helictoglossae. 28. Internal view of center valve showing the central depression. 29. Magnified view of striae pattern showing the internal structure of areolae. Scale bars: Figs 25–28: 2 µm; Fig. 29 = 1 µm.
FIGURES 19–24 in Pinnularia sikkimensis sp. nov. (Bacillariophyceae), from Eastern Himalayas and its distribution in Southeast Asia
FIGURES 19–24. Pinnularia sikkimensis sp. nov. SEM. 19. External view of the whole valve. 20. Girdle view of the whole valve. 21, 22. External view of poles showing the distal raphe endings. 23. External view of valve centre, showing the proximal raphe endings. 24. Magnified view of striae patterns showing small areolae and covered by silicified hymens. Scale bars: Figs 19, 20: 2 µm; Figs 21–24 = 1 µm.
FIGURES 26–32 in Four new Pinnularia Ehrenberg (Bacillariophyta, Pinnulariaceae) species from Amazonian black water (Tupé Lake, Amazonas State, Brazil)
FIGURES 26–32. SEM: Pinnularia tupensis sp. nov. Fig. 26. General internal view of valve. Fig. 27. Ends showing terminal raphe with a prominent helictoglossa (arrow). Fig. 28. Internally, proximal raphe fissure showing no intermission near central nodule. Fig. 29. External view showing proximal raphe fissures bent in same direction. Fig. 30. Ends capitate, elongate. Figs 31, 32. Detail of alveoli structure and bayonet raphe shape. Scale bars: Figs 26, 28, 30 = 5 µm; Figs 29, 31 = 2 µm; Figs 27, 32 = 1 µm.
FIGURES 33–38 in Four new Pinnularia Ehrenberg (Bacillariophyta, Pinnulariaceae) species from Amazonian black water (Tupé Lake, Amazonas State, Brazil)
FIGURES 33–38. SEM: Pinnularia walkerae sp. nov. External view of morphological features. Fig. 33. General view of valve. Fig. 34. Detail of central area showing proximal raphe fissures bent in same direction. Figs 35, 36. Detail of alveolus showing 3–7 rows of areolae. Figs 37, 38. Detail of pole with sickle-shaped raphe and showing alveoli structure. Scale bars: Fig. 33 = 10 µm; Figs 34, 37 = 5 µm; Fig. 35 = 2 µm; Figs. 36, 38 = 1 µm.
FIGURES 22–25 in Four new Pinnularia Ehrenberg (Bacillariophyta, Pinnulariaceae) species from Amazonian black water (Tupé Lake, Amazonas State, Brazil)
FIGURES 22–25. SEM: Pinnularia manausensis sp. nov. External view of morphological features. Fig. 22. General view of valve. Fig. 23. Detail of the sickle-shaped raphe fissure at pole. Fig. 24. Central area showing proximal raphe fissures bent in same direction. Fig. 25. Alveolus with rows of rounded areolae. Scale bars: Fig. 22 = 10 µm; Figs 23, 24 = 5 µm; Fig. 25 = 2 µm.
FIGURES 2–21 in Four new Pinnularia Ehrenberg (Bacillariophyta, Pinnulariaceae) species from Amazonian black water (Tupé Lake, Amazonas State, Brazil)
FIGURES 2–21. LM valve views. Figs 2–6. P. manausensis sp. nov. Figs 7–12. P. nelsonii sp. nov. Figs 13–17. P. tupensis sp. nov. Figs 18–21. P.walkerae sp. nov. Scale bar = 10 µm.
FIGURES 16–20 in Pinnularia qinghainensis: a new diatom species (Bacillariophyta) found in the brackish Lake Qinghai, China
FIGURES 16–20. Pinnularia qinghainensis sp. nov., SEM external view. 16. Complete valve. 17. Detail of centre in Fig. 16, note hexagonal central area and slightly bent central raphe ends. 18, 19. Detail of pole in Fig. 16 showing curved distal raphe fissures and striae composed of 4 rows of small areolae. 20. Detail of striae showing small areolae occluded by silica plates. Scale bar = 10 μm (Fig. 16), 1 μm (Figs 17–20).
FIGURES 21–25 in Pinnularia qinghainensis: a new diatom species (Bacillariophyta) found in the brackish Lake Qinghai, China
FIGURES 21–25. Pinnularia qinghainensis sp. nov., SEM internal view. 21. Complete valve. 22. Detail of centre in 21, note hexagonal central area bordering margins with few short striae. 23. Detail of centre of valve showing hexagonal central area reaching margins. 24, 25. Details of two poles in Fig. 21. Scale bar = 10 μm (Fig. 21), 1 μm (Figs 22–25).
Figure 2 from: Xu S-M, Liu B, Rioual P, Yi M-Q, Ma Y-D (2024) A new freshwater species of Pinnularia (Bacillariophyta) from Hunan Province, China. PhytoKeys 237: 179-189. https://doi.org/10.3897/phytokeys.237.116946
Figure 2 Pinnularia hupingensis sp. nov., LMA–I nine valves exhibiting a size diminution series, note the Voigt faults present in some of the valves (arrows on A, E, G, H) B micrograph of the holotype specimen. Scale bar: 20 μm.
Figure 1 from: Xu S-M, Liu B, Rioual P, Yi M-Q, Ma Y-D (2024) A new freshwater species of Pinnularia (Bacillariophyta) from Hunan Province, China. PhytoKeys 237: 179-189. https://doi.org/10.3897/phytokeys.237.116946
Figure 1 Pinnularia hupingensis sp. nov., LMA–C three living cells in girdle view, note that the girdle-appressed chloroplast spreads along the apical plane D–G four living cells in valve view, note the two plate-like, girdle-appressed chloroplasts. Scale bar: 20 μm.
Figure 5 from: Xu S-M, Liu B, Rioual P, Yi M-Q, Ma Y-D (2024) A new freshwater species of Pinnularia (Bacillariophyta) from Hunan Province, China. PhytoKeys 237: 179-189. https://doi.org/10.3897/phytokeys.237.116946
Figure 5 Pinnularia hupingensis sp. nov., SEMA one complete valvocopula, note a row of elongate poroids are produced in the pars exterior (four arrows) B middle part details from A, note the pars interior, suture, pars exterior and the elongate poroids (wavy arrows) C one apical detail from A, note the valvocopula is closed at this apex D the other apical detail from A, note the valvocopula is open at this apex (black arrow). Scale bars: 5 μm (A); 1 μm (B–D).
Figure 3 from: Xu S-M, Liu B, Rioual P, Yi M-Q, Ma Y-D (2024) A new freshwater species of Pinnularia (Bacillariophyta) from Hunan Province, China. PhytoKeys 237: 179-189. https://doi.org/10.3897/phytokeys.237.116946
Figure 3 Pinnularia hupingensis sp. nov., SEM, valve external view A, B two complete valves, note the primary and secondary sides and the curved distal raphe fissures (black arrows) C middle part, details from B showing the large, hexagonal central area, slightly expanded proximal raphe endings bent in the same direction towards the primary side D, E apices, details from B showing the curved distal raphe fissures and apical hyaline areas F detail of the striae, note each stria comprises 3–5 rows of small round poroids. Scale bars: 5 μm (A, B); 1 μm (C–F).
Figure 4 from: Xu S-M, Liu B, Rioual P, Yi M-Q, Ma Y-D (2024) A new freshwater species of Pinnularia (Bacillariophyta) from Hunan Province, China. PhytoKeys 237: 179-189. https://doi.org/10.3897/phytokeys.237.116946
Figure 4 Pinnularia hupingensis sp. nov., SEM, valve internal view A, B two complete valves, note the primary and secondary sides C middle part, details from B, note the large, hexagonal central area and the internal proximal raphe fissures both deflecting towards the primary side (two arrows) D, E apices, details from B, note each internal distal raphe fissure running into a small, knob-like helictoglossa, the hyaline areas and the Voigt fault (B, E, wavy arrow respectively) F internal detail of the chambers, note the large transapical elongate apertures (two double-headed arrows). Scale bars: 5 μm (A, B); 1 μm (C–F).
Figs. 44-51 in O gênero Pinnularia Ehrenberg (Bacillariophyceae) em um lago de inundação do rio Tapajós (Lago Verde, Santarém, Pará, Brasil)
Figs. 44-51. Imagens em MO. 44, 45. Pinnularia stoermeri; 46. P. subboyeri; 47. P. subelongatoides; 48. P. subelongatoides; 49. P. superpaulensis; 50, 51. P. tumescens. Barra = 10 μm.
Figs. 11-15 in O gênero Pinnularia Ehrenberg (Bacillariophyceae) em um lago de inundação do rio Tapajós (Lago Verde, Santarém, Pará, Brasil)
Figs. 11-15. Imagens em MO. 11. Pinnularia discrepantia; 12, 13. P. divergens var. malayensis; 14, 15. P. divergens var. media. Barra = 10 μm.
Fig. 1 in O gênero Pinnularia Ehrenberg (Bacillariophyceae) em um lago de inundação do rio Tapajós (Lago Verde, Santarém, Pará, Brasil)
Fig. 1. Localização geográfica do Lago Verde, indicando as quatro estações amostrais, no município de Santarém no estado do Pará. IM = Igarapé do Macaco, IMe = Igarapé do Meiritiapina, CL= região Central do Lago, IC = Igarapé do Camarão.
Figs. 57-67 in O gênero Pinnularia Ehrenberg (Bacillariophyceae) em um lago de inundação do rio Tapajós (Lago Verde, Santarém, Pará, Brasil)
Figs. 57-67. Imagens em MEV. Pinnularia do Lago Verde. 57 - 60. Pinnularia amoena. 57. vista externa das extremidades proximais da rafe na área central; 58, 59. vista externa da extremidade distal da rafe; 60. vista geral externa da valva; 61 - 63. P. discrepantia.61. vista geral interna da valva; 62. vista interna da rafe na área central; 63. vista interna da extremidade distal da rafe; 64 - 67. P. divergens var. media.64. vista externa da extremidade distal da rafe; 65. vista geral interna da valva; 66. vista externa das extremidades proximais da rafe na área central; 67. vista externa da extremidade distal da rafe. Barras: Figs. 57, 58, 62, 63 = 5μm; Figs. 59, 64, 66, 67 = 2 μm; Fig. 60 = 20 μm; Figs. 61, 65 = 10 μm.
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