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13 results for “Sellaphoraceae”
FIGURES 17–29. Sellaphora pseudoventralis comb. nov. 17–27. Light microscopy. 29–29. SEM. 28. External valve view. 29 in Sellaphora smirnovii (Bacillariophyta, Sellaphoraceae), a new small-celled species from Lake Glubokoe, European Russia, together with transfer of Navicula pseudoventralis to the genus Sellaphora
FIGURES 17–29. Sellaphora pseudoventralis comb. nov. 17–27. Light microscopy. 29–29. SEM. 28. External valve view. 29. Internal valve view. Scale bars: 10 μm (Figs 17–27), 2 μm (Figs 28–29).
FIGURES 1–16 in Sellaphora smirnovii (Bacillariophyta, Sellaphoraceae), a new small-celled species from Lake Glubokoe, European Russia, together with transfer of Navicula pseudoventralis to the genus Sellaphora
FIGURES 1–16. Sellaphora smirnovii sp. nov. 1–13. Light microscopy, Fig. 7 illustrates the holotype specimen. 14–16. SEM, external valve view. Scale bars: 10 μm (Figs 1–13), 1 μm (Figs 14–16).
FIGURES 2–17 in Sellaphora davoutiana sp. nov.: a new freshwater diatom species (Sellaphoraceae, Bacillariophyta) in lakes of Northeastern France
FIGURES 2–17. Sellaphora davoutiana (type material from Lispach Lake at La Bresse). Figs 2–13. LM valve views. Holotype depicted on Fig. 5. Scale bar = 10 μm. Figs 14–17. SEM views. 14. Valve in external view. 15. Valve in internal view. 16. Close up on apex showing distal raphe fissure ending in helictoglossae. 17. Valve in external view showing distal raphe ending on the mantle. Scale bars = 2 μm.
FIGURE 1 in Sellaphora davoutiana sp. nov.: a new freshwater diatom species (Sellaphoraceae, Bacillariophyta) in lakes of Northeastern France
FIGURE 1. Sampling sites (black triangle) in Grand Est region (France) where Sellaphora davoutiana has been recorded, with the location of type locality (black star).
FIGURES 18–33 in Sellaphora davoutiana sp. nov.: a new freshwater diatom species (Sellaphoraceae, Bacillariophyta) in lakes of Northeastern France
FIGURES 18–33. Adlafia detenta comb. nov. (Hustedt Collection, Lectotype E1330, Davos, Schweiz 230, Unterer Grialetschsee, Grund, 2.10.1932). Figs 18–30. LM views. Original drawing from Hustedt in Schmidt et al. (1934, pl. 400, figs 93–95) here reproduced as Figs 18–20. Scale bar = 10 μm. Figs 31–33. SEM views. 31–32. Valve in external view. 33. Close up on apex showing distal raphe fissure ending. Note the typical stria divergence of the genus Adlafia (arrow). Scale bars = 2 μm.
FIGURES 3–51. Sellaphora gologonica G.G in Sellaphora gologonica sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from a Mediterranean karst spring (Sardinia, Italy)
FIGURES 3–51. Sellaphora gologonica G.G. Lai, Ector & C.E. Wetzel sp. nov. Population "Su Gologone" spring. LM (Figs 3–46): size reduction series of the population. Specimen here depicted in Figs 6–7. Frustules rectangular in girdle view (Fig. 31). SEM (Figs 47–51): Figs 47–50. External views showing striae patterns (strongly radiate) and double areolae near the axial area on the valve surface. Arrows–sinuous raphe system. Fig. 51. Internal view showing slightly deflected raphe endings. Arrows–large rounded apical pits present at both apices. LM scale bar = 10 μm.
FIGURES 52–59 in Sellaphora gologonica sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from a Mediterranean karst spring (Sardinia, Italy)
FIGURES 52–59. SEM comparison between Sellaphora gologonica sp. nov. from Su Gologone spring (Sardinia) and Sellaphora seminulum from Grunow's original material. Figs 52–55. External views of S. gologonica sp. nov. Figs 56–58. External views of S. seminulum. Fig. 59. Internal view of S. seminulum. Arrows–apical pits present at apices.
FIGURE 2 in Sellaphora gologonica sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from a Mediterranean karst spring (Sardinia, Italy)
FIGURE 2. Sa Vena spring: water emergency point (a), brook (b), water abstraction system inside the rock (c).
FIGURES 24–26 in Sellaphora tanghongquii sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from the Southern China
FIGURES 24–26. Sellaphora tanghongquii sp. nov., SEM, internal views. 24. Internal view of entire valve. 25. Detail of valve apex, showing pore-like pit and elongated helictoglossae. 26. Detail of the valve central area, showing biseriate striae and central raphe ends bending in the same direction. Scale bar = 2 μm (Figs 24, 26), 1 μm (Fig. 25).
FIGURES 2–20 in Sellaphora tanghongquii sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from the Southern China
FIGURES 2–20. Sellaphora tanghongquii sp. nov., LM, DIC. Valve views, showing size range and variability of the holotype population. In Figs 3–4 the white arrows point to the longitudinal ridges adjacent to the trough. Scale bar = 10 μm.
FIGURE 1 in Sellaphora tanghongquii sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from the Southern China
FIGURE 1. Study areas and the sampling sites. Sampling site (●: Samples of Sellaphora tanggongquii sp. nov. were collected from the tributaries of the Pearl River).
FIGURES 21–23 in Sellaphora tanghongquii sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from the Southern China
FIGURES 21–23. Sellaphora tanghongquii sp. nov., SEM, external views. 21. External view of the entire valve. Arrow A in the figure indicates troughs extending to the apical area and progressively becoming shallower. Arrow B indicates areolae becoming smaller from the longitudinal ridge to the trough. Arrow C indicates a row of separated and small pores on the valve mantle. 22. Detail of valve apices showing, uniseriate striae extending into the mantle. 23. External view of valve centre showing central raphe endings with the drop-shaped pores. Scale bar = 1 μm.
FIGURE 1 in Sellaphora gologonica sp. nov. (Bacillariophyta, Sellaphoraceae), a new diatom species from a Mediterranean karst spring (Sardinia, Italy)
FIGURE 1. Geographic location of the Sa Vena spring (Su Gologone karst system).
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