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30 results for “Naviculales”
FIGURES 30–34 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India
FIGURES 30–34. Hippodonta mudumalaiensis sp. nov., SEM from the type material (AHMA #1405), external views. 30, 31. Views of the entire valve. 32. Central area. 33, 34. Valve apices. Scale bars = 1 μm (Figs 30–34).
FIGURES 2–29 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India
FIGURES 2–29. Hippodonta mudumalaiensis sp. nov., LM (DIC) from the type material (AHMA #1752). 2–29. Showing the valve variability of the population. Fig. 22 represents the holotype. Scale bar = 10μm.
FIGURE 1 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India
FIGURE 1. Distribution of Hippodonta taxa reported from the Indian Subcontinent. The type location of Hippodonta mudumalaiensis sp. nov., marked by a star.
FIGURES 35–39 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India
FIGURES 35–39. Hippodonta mudumalaiensis sp. nov., SEM from the type material (AHMA #1405), internal views. 35, 36. Views of the entire valve. 37, 38. Inner central area. 39. view of valve apex end with helictoglossa. Scale bars = 1 μm (Figs 35–39).
Morphological and molecular characterization of Halamphora vantushpaensis (Naviculales, Amphipleuraceae)
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FIGURES 11–13 in Stauroneis kingstonii sp. nov. (Bacillariophyta: Naviculales), a new diatom species from the Black Swamp, Arkansas, USA
FIGURES 11–13. SEM images of Stauroneis kingstonii. Fig. 11. Internal view of an entire valve. Scale bar = 10 μm. Fig. 12. Internal valve view showing thickened stauros, longitudinal ribs of raphe sternum, and slightly deflected proximal raphe ends. Scale bar = 10 μm. Fig. 13. Internal valve view showing distal raphe end deflected into a helictoglossum, striae comprising single rows of areolae that are each occluded by a hymene. Scale bar = 5 μm.
FIGURE 10 in Stauroneis kingstonii sp. nov. (Bacillariophyta: Naviculales), a new diatom species from the Black Swamp, Arkansas, USA
FIGURE 10. Raphe features of Stauroneis kingstonii; lateral raphe branch and broad axial area, proximal raphe ends nearly straight, and distal raphe ends sickle-shaped. Scale bar = 10 μm.
FIGURE 1 in Stauroneis kingstonii sp. nov. (Bacillariophyta: Naviculales), a new diatom species from the Black Swamp, Arkansas, USA
FIGURE 1. The Cache River watershed, Arkansas, USA. Station 14 is the Stauroneis kingstonii type locality. Filled circles indicate numbered sampling stations where Stauroneis kingstonii occurred and unfilled circles indicate where valves did not occur in samples.
FIGURES 2–9 in Stauroneis kingstonii sp. nov. (Bacillariophyta: Naviculales), a new diatom species from the Black Swamp, Arkansas, USA
FIGURES 2–9. Size diminution series of Stauroneis kingstonii, LM, DIC. Fig. 3. Holotype specimen (ANSP GC-65192). All images in valve view and at same scale; scale bar (Fig. 2) = 10 μm.
FIGURES 65–70 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 65–70. Navicula walkeri, SEM. Snow Creek, Oregon. 65–67. External valve views. 68–70. Internal valve views. Scale bars: Figs 65, 68 = 10 μm; all others = 5 μm.
FIGURES 47–52 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 47–52. Navicula subwalkeri, SEM, North Umpqua River, Oregon. 47–49. External valve views. 50–52. Internal valve views. Scale bars: Figs 47, 50 = 10 μm; all others = 2 μm.
FIGURES 18–29 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 18–29. Navicula ludloviana, LM. 18. Iconotype, A. Schmidt 1876. 19–22. Specimens from fossil lacustrine population near Port Ludlow, Washington (ANSP! Boyer 1060). 23, 24. Specimens from fossil lacustrine populations near Pit River, California. 23. ANSP! Boyer E-2-21. 24. ANSP! Febiger 5661. 25–29. Specimens from extant riverine populations in Oregon. 25–27, 29: Snow Creek, Oregon. 28: Lake Creek, Oregon. Scale bars = 10 μm for all images.
FIGURES 30–33 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 30–33. Navicula ludloviana, SEM. Specimens from fossil lacustrine population near Pit River, California (ANSP! Boyer 338). 30, 31. External valve views. 32, 33. Internal valve views. Scale bars: Figs 30, 32, 33 = 10 μm; Fig. 31 = 2 μm.
FIGURES 53–64 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 53–64. Navicula walkeri, LM. 60. Close-up of central area of valve in 63. 61, 62. Iconotypes, Sovereign 1958. 63, 64. Same valve at different levels of focus. 53. North Umpqua River, Oregon. 54, 55, 57–59. Snow Creek, Oregon. 56. Pit River diatomite, California (ANSP! Boyer 338). 60, 63, 64. Lake Creek, Oregon.
FIGURES 11–17 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 11–17. Navicula volcanica, SEM, North Umpqua River, Oregon. 11, 12. External valve views. 13–17. Internal valve views. Scale bars: Figs 11, 13 = 10 μm; Figs 12, 14, 16 = 5 μm; Figs 15, 17 = 1 μm.
FIGURE 1 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURE 1. Map of the northwestern United States showing approximate locations of sampling sites listed in Table 1 and mentioned in the text. Key to states: CA = California, ID = Idaho, MT = Montana, NV = Nevada, OR = Oregon, WA = Washington. Key to sites: C = Chiloquin, CL = Crater Lake, CR = Columbia River, DL = Diamond Lake, JC = Jackson Creek, LC = Lake Creek, LW = Lake Washington, M = Merced River, NUR = North Umpqua River, PL = Port Ludlow, PR = Pit River, QC = Quartzville Creek, SNC = Snow Creek, SC = Spring Creek, T = Terrebonne, UCR = upper Clearwater River, UKL = Upper Klamath Lake.
FIGURES 2–10 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 2–10. Navicula volcanica, LM. 3. Preserved specimen with intact chloroplasts and four large oil droplets. 5. Holotype specimen. 2, 4, 6–10. Clearwater River, Oregon. 3, 5. North Umpqua River, Oregon. Scale bars = 10 μm.
FIGURES 34–46 in Two new species of Navicula (Bacillariophyta, Naviculales) from the Cascade Mountains of the American Northwest
FIGURES 34–46. Navicula subwalkeri, LM. 34. Holotype specimen. 42. Close-up of central area. 45, 46. Preserved specimens with intact but somewhat degraded chloroplasts. 34, 37, 41, 45, 46. North Umpqua River, Oregon. 35, 36, 38–40, 42, 44. Clearwater River, Oregon. 43. Pliocene diatomite, Chiloquin, Oregon (ANSP! GC63230). Scale bars: Fig. 42 = 5 μm; all others = 10 μm.
FIGURES 26–30 in Pinnularia wuyiensis sp. nov., a new diatom (Bacillariophyceae, Naviculales) from the north region of Wuyi Mountains, Jiangxi Province, China
FIGURES 26–30. Pinnularia wuyiensis, SEM. Internal view of morphological features. 26. Internal view of an entire valve. 27, 28. Internal view of the valve apex showing typical helictoglossa. 29. Internal view of the central area. 30. Internal view of alveoli pattern. Scale bars: Fig. 26 = 10 μm, Figs 27–29 = 3 μm, Fig. 30 = 1 μm.
FIGURES 19–25 in Pinnularia wuyiensis sp. nov., a new diatom (Bacillariophyceae, Naviculales) from the north region of Wuyi Mountains, Jiangxi Province, China
FIGURES 19–25. Pinnularia wuyiensis, SEM. External view of morphological features. 19–21. General view of valve. 22, 23. Detail of the sickle-shaped raphe fissure at pole, and alveolus with rows of rounded areolae. 24. Central area showing proximal raphe fissures bent in the same direction. 25. Detail of an alveolus with rows of rounded areolae. Scale bars: Figs19–21 = 10 μm, Figs 22–25 = 2 μm.
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