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35 results for “Stauroneis”
FIGURE 25 in Five new species of Stauroneis (Bacillariophyta, Stauroneidaceae) from the northern Rocky Mountains, USA
FIGURE 25: Wolverine Lakes in the Galton Range, northwest Montana. Upper Wolverine Lake (foreground) is the type locality of Stauroneis thompsonii and typical of habitats for Stauroneis species in the northern Rocky Mountains. Photo by the author.
FIGURES 9–24 in Five new species of Stauroneis (Bacillariophyta, Stauroneidaceae) from the northern Rocky Mountains, USA
FIGURES 9–24: Stauroneis sacajaweae, S. spauldingiae, and S. thompsonii. Figs 9–15: Stauroneis sacajaweae. Figs 9, 11–15: Type locality. Fig. 10: Haystack Seep, Going-To-The-Sun Road, Glacier National Park, Montana. Figs 16–21: Stauroneis spauldingiae. Figs 16–18, 20, 21: Copper Lake, Shoshone County, Idaho (type locality). Fig. 19: Lily Lake, Lemhi County, Idaho. Figs 22–24: Stauroneis thompsonii from the type locality.
FIGURES 1–8 in Five new species of Stauroneis (Bacillariophyta, Stauroneidaceae) from the northern Rocky Mountains, USA
FIGURES 1–8: Stauroneis clarkii and Stauroneis lewisii. Figs 1–4: Stauroneis clarkii from the type locality. Figs 5–8: Stauroneis lewisii from various locations. Figs 5–6: Blodgett Lake, Selway-Bitterroot Wilderness, Montana (type locality). Fig. 7: Fred Burr Lake, Selway-Bitterroot Wilderness, Montana. Fig. 8: Bloody Dick Pond No. 6, Beaverhead County, Montana.
FIGURE 26 in Stauroneis lacusvulcani sp. nov. (Bacillariophyceae), a new diatom from volcanic lakes in northeastern China
FIGURE 26. Sedimentary record of Lake Xiaolongwan plotted versus core depth (primary y-axis) and calibrated years BP (secondary y-axis). A) Simple stratigraphy showing laminated sediments interrupted by a slump deposit. B) Position of samples analyzed for diatoms in this study. C) Water content of the sediment. D) Dry bulk density. E) Diatom concentration. F) Variations of the relative percentages of Stauroneis lacusvulcani.
FIGURE 25 in Stauroneis lacusvulcani sp. nov. (Bacillariophyceae), a new diatom from volcanic lakes in northeastern China
FIGURE 25. Length vs width scatter plot for Stauroneis lacusvulcani. The valve width is significantly related to valve length (Width = 3.916 + 0.092 × Length, r2=0.52, F =101.3, p<0.001, n=92).
FIGURES 2–15 in Stauroneis lacusvulcani sp. nov. (Bacillariophyceae), a new diatom from volcanic lakes in northeastern China
FIGURES 2–15. Light micro-photographs of Stauroneis lacusvulcani. Scale bar = 10 µm. Figs 3,4,7,8. Specimen from Sifangshan Tianchi, surface-sediment. Figs 2, 5, 6. Specimens from Xialongwan surface-sediment. Figs 9–15. Specimens from Xiaolongwan core sample.
FIGURES 16–21 in Stauroneis lacusvulcani sp. nov. (Bacillariophyceae), a new diatom from volcanic lakes in northeastern China
FIGURES 16–21. SEM of Stauroneis lacusvulcani from Sifangshan. 16. Exterior view of whole valve. 17. Close-up of valve centre. 18. Close-up of distal end. 19. Interior view of whole valve. 20. Interior view of centre showing ridge bearing raphe fissure. 21. Interior view of distal end showing helictoglossa.
FIGURES 22–24 in Stauroneis lacusvulcani sp. nov. (Bacillariophyceae), a new diatom from volcanic lakes in northeastern China
FIGURES 22–24. Box plots showing quantile distributions of valves characters for populations of Stauroneis lacusvulcani observed in the 2 localities: Sifangshan (n=35) and Xialongwan (n=7 for surface sediment and n=50 for core sample). 22. Valve length. 23. Valve width. 24. Striae density (= number of striae in 10 µm). The 25–75 percent quartiles (excluding outliers) are drawn using a box. The median is shown with a horizontal line inside the box. The whiskers represent the upper and lower "inner fence", i.e. are drawn from the edge of the box up to the largest/lowest data point less than 1.5 times the box height. Outliers, i.e. values outside the inner fences, are shown as circles if they lie further from the edge of the box than 3 times the box height.
FIGURE 1 in Stauroneis lacusvulcani sp. nov. (Bacillariophyceae), a new diatom from volcanic lakes in northeastern China
FIGURE 1: Geographical location of the study sites. Lake Xiaolongwan is marked by an X, Sifangshan Tianchi by a S. Shaded areas represent mountainous regions with an elevation>1000 m.
FIGURES 2–16. Stauroneis schinzii var. argentina Frenguelli. Fig. 2 in Revision Of The Type Materials Of Stauroneis Schinzii Var. Argentina Frenguelli And S. Schinzii Var. Maxima Frenguelli (Bacillariophyceae)
FIGURES 2–16. Stauroneis schinzii var. argentina Frenguelli. Fig. 2. Original drawing of Frenguelli (1933, Pl. I, fig. 10). Figs 3–16. LM. Specimens from type population. Figs 5–6. Lectotype, same specimen in different focus. Fig.15. Detail of valve end showing distal raphe fissure. Fig. 16. Detail of valve centre showing sternum and proximal raphe ends. Note the irregularly long striae delimiting the axial area (arrow). Scale bars: 10 µm (Figs 2–14); 5 µm (Figs 15–16).
FIGURE 1 in Revision Of The Type Materials Of Stauroneis Schinzii Var. Argentina Frenguelli And S. Schinzii Var. Maxima Frenguelli (Bacillariophyceae)
FIGURE 1. Map of Esteros del Iberá (Corrientes, Argentina), showing the sampling sites corresponding to the series of Frenguelli Collection re-examined.
FIGURES 22–31. Stauroneis schinzii var. maxima Frenguelli. Figs 22 in Revision Of The Type Materials Of Stauroneis Schinzii Var. Argentina Frenguelli And S. Schinzii Var. Maxima Frenguelli (Bacillariophyceae)
FIGURES 22–31. Stauroneis schinzii var. maxima Frenguelli. Figs 22. Original drawing of Frenguelli (1933, Pl. I, fig. 11). Figs. 23–28. LM. Specimens from type population. Fig. 24. Lectotype. Fig. 27. Detail of valve end showing distal raphe fissure. Note the thickened sternum. Fig. 28. Detail of valve centre showing sternum and proximal raphe ends. Figs 29–31. Specimen from type population. SEM. Fig. 29. Detail of internal valve end showing distal raphe end terminating in a weakly developed helictoglossa (arrow). Fig. 30. Detail of internal valve center showing proximal raphe ends and stauros. Fig. 31. Broken tilted valve in internal view. Scale bars: 10 µm (Figs 22–26, 31); 5 µm (Figs 27–30).
FIGURES 17–21. Stauroneis schinzii var. argentina Frenguelli. Specimens from type population. SEM. Fig. 17 in Revision Of The Type Materials Of Stauroneis Schinzii Var. Argentina Frenguelli And S. Schinzii Var. Maxima Frenguelli (Bacillariophyceae)
FIGURES 17–21. Stauroneis schinzii var. argentina Frenguelli. Specimens from type population. SEM. Fig. 17. Broken valve in external view. Fig.18. Broken valve in internal view. Fig. 19. Detail of external valve end showing distal raphe fissure. Note one row of poroids on each girdle band (arrows). Fig. 20. Detail of external valve face; note the transapical elongated areolae. Fig. 21. Detail of internal valve center showing proximal raphe ends. Scale bars: 10 µm (Figs 17–18); 2 µm (Figs 19–21).
FIGURES 3–17 in Description of Stauroneis saprophila sp. nov. (Bacillariophyta), a new diatom species from anthropogenic environment
FIGURES 3–17. LM images of Stauroneis saprophila. Scale bar = 10 μm.
FIGURES 37–41. Stauroneis dharwarensis Wadmare & B in Revisiting two Stauroneis Ehrenberg (Bacillariophyta) from H. P. Gandhi's Diatom collection: Notes on Ultrastructure, Types and Nomenclature
FIGURES 37–41. Stauroneis dharwarensis Wadmare & B.Karthick nom. nov., stat. nov., SEM, internal valve views. 37, 38. Internal views of an entire valve. 37, 39. Apices showing terminal raphe fissures as helictoglossae. 40. Stauros thick bearing deflected central raphe ends. 39–41. Areolae with hymen layer. Scale bars = 4 µm (Figs 37–41).
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