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Dataset results
23 results for “Gomphonemataceae”
FIGURES 22–27 in Gomphonema supersaprophilum sp. nov., a new diatom species (Gomphonemataceae, Bacillariophyceae) from Flemish rivers (Belgium)
FIGURES 22–27. Gomphonema supersaprophilum Van de Vijver & E.Reichardt, sp. nov. SEM images taken from the holotype sample (BR-4831, Devebeek, Ingelmunster, Wet-Vlaanderen, Belgium, sample APM23-73). 22. SEM external view of an entire valve in oblique view showing the valve mantle. 23. SEM external detail of the central area showing the isolated pore (arrow) and the slit-like areolae. 24. SEM external detail of the footpole with the apical pore field bisected by the terminal raphe fissure. 25. SEM internal view of an entire valve. 26. SEM internal detail of the central area showing the isolated pore (arrow) and the hooked central raphe endings. Note the reduced silica struts. 27.SEM internal detail of the footpole with the helictoglossa. Scale bars = 10 µm (Figs 22, 25) = 1 µm (Figs 23, 24, 26, 27).
PLATE 10, FIGURES 55–60 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 10, FIGURES 55–60. Gomphoneis basirobusta, LM. Valve views showing size diminution series. Figure 56 is the holotype. Scale bars = 10 µm for all figures.
PLATE 7, FIGURES 35–38. G.qii. SEM, internal views. Fig. 35 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 7, FIGURES 35–38. G.qii. SEM, internal views. Fig. 35. Entire valve view showing prominent axial area and central nodule, the large helictoglossae and pseudosepta. The rectangular shape of the central area is evident. Fig. 36. Headpole, showing the pseudoseptum. Fig. 37. Central area with the internally elevated central nodule bearing the recurved proximal raphe ends. Fig. 38. Footpole, with helictoglossa and pseudosepteum obvious.
PLATE 1, FIGURES 1–6 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 1, FIGURES 1–6. Gomphoneis subtiloides, LM. Valve views showing size diminution series. Figure 3 is the holotype. Scale bars = 10 µm for all figures.
PLATE 2, FIGURES 7–14. G. subtiloides, SEM. Figs 7–11, external views. Fig. 7 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 2, FIGURES 7–14. G. subtiloides, SEM. Figs 7–11, external views. Fig. 7. Entire valve showing shape of the valve and shape of the distinct central area. Fig. 8. View of central area with branching striae. Fig. 9. Headpole, with striae composed of two rows of rounded areolae. Fig. 10. Central area showing dilated external proximal raphe ends and striae terminating in a single row of areolae. Fig. 11. Distinct apical pore field dominates the footpole. Porelli are in distinct rows, and appear similar in shape to areolae. Figs 12– 14, internal views. Fig. 12. Headpole with distinct helictoglossa and pseudoseptum. Fig. 13. Central area with proximal raphe ends recurved in the same direction on the edge of the central nodule and striae terminating as single rows of areolae. Fig. 14. Footpole, with prominent helictoglossa and wide pseudoseptum.
PLATE 14, FIGURES 84–90 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 14, FIGURES 84–90. Gomphoneis rostratoides, LM. Valve views showing size diminution series. Figure 84 is the holotype. Scale bar = 10 µm for all figures.
PLATE 11, FIGURES 61–66. G. basirobusta. SEM. Figs 64, 66, external views. Fig. 64 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 11, FIGURES 61–66. G. basirobusta. SEM. Figs 64, 66, external views. Fig. 64. Central area, showing striae composed of two rows of areolae tapering to single rows near the axial area. Fig. 66. Footpole, with distal raphe end bisecting the bilobed apical pore field. Porelli are organized into two rows. Figs 61–63, 65, internal views. Fig. 61. Entire valve view with prominent axial area, footpole and helictoglossa. Fig. 62. Central nodule is small and internally elevated, areolae near the center have prominent thickenings. Central nodule has recurved proximal raphe ends. Fig. 63. Headpole, with helictoglossa and pseudoseptum prominent. Fig. 65. Footpole, with helictoglossa prominent, pseudoseptum present and interstriae dividing the rows of porelli at the pore field.
PLATE 4, FIGURES 19–25. G. pseudosubtiloides. SEM. Figs 20–22, external views. Fig. 20 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 4, FIGURES 19–25. G. pseudosubtiloides. SEM. Figs 20–22, external views. Fig. 20. Headpole, showing striae convergent near the apex and distal raphe end extending onto mantle. Fig. 21. Central area with proximal raphe ends dilated and radiate striae around the center terminating in single rows of areolae. Fig. 22. Bilobed apical pore field has porelli aligned in two rows, and they resemble the areolae. Distal raphe end bisects the pore field. Figs 19, 23–25, internal views. Fig 19. Entire valve view show prominent axial area and expanded central area. Fig. 23. Headople with pseudoseptum and helictoglossa evident. Fig. 24. Central area with raised central nodule, recurved proximal raphe ends and striae terminating as single rows of areolae. Fig. 25. Footpole with prominent helictoglossa and distinct divisions between rows of porelli of the apical pore field.
PLATE 9, FIGURES 48–54. G. XINJIANGIANA. SEM. Figs 49–51, external views. Fig. 49 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 9, FIGURES 48–54. G. XINJIANGIANA. SEM. Figs 49–51, external views. Fig. 49. Headpole, with striae composed of double rows of areolae and distal raphe end bending slightly onto the mantle. Fig. 50. Central area with proximal raphe ends dilated and striae with double rows of areolae, but terminating in a single areola. Fig. 51. Footpole, with apical pore field bisects by distal raphe end. Porelli of pore field in rows of two, appearing morphologically similar to areolae. Figs 48, 52–54, External views. Fig. 48. Entire valve view, with central nodule, helictoglossae and pseudosepta prominent. Fig. 52. Headpole, showing pseuoseptum and helictoglossa. Fig. 53. Central area, with small, elevated central nodule having proximal raphe ends recurved slightly, and striae tapering from 2 rows to 1 row of areolae. Fig. 54. Footpole, with helictoglossa aligned straight with the raphe and thin interstriae evident at the apical pore field.
PLATE 3, FIGURES 15–18 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 3, FIGURES 15–18. Gomphoneis pseudosubtiloides, LM. Valve views showing size diminution series. Figure 16 is the holotype. Scale bar = 10 µm for all figures.
PLATE 6, FIGURES 31–34. G. qii. SEM, external views. Fig. 31 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 6, FIGURES 31–34. G. qii. SEM, external views. Fig. 31. Entire valve view showing shape of the valve and dilated proximal raphe ends. Fig. 32. Headpole, with distal raphe end extended from valve face to mantle. Striae are doubly-punctae, with areolae small and round. Fig. 33. Central area showing striae of reduced length and external proximal raphe ends. Fig. 34. Footpole, with porelli of the apical pore fields similar in position and shape to the areolae.
PLATE 17, FIGURES 102–108. G. distorta, SEM. Figs 103–105, external views. Figs 103, 105 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 17, FIGURES 102–108. G. distorta, SEM. Figs 103–105, external views. Figs 103, 105. Apices showing doubly-punctate striae and, at the footpole, apical pore field with porelli similar to the areolae. Fig. 104. Central area with dilated proximal raphe ends and striae tapering from biseriate to uniseriate. Figs 102, 106–108, internal view. Fig. 102. Entire valve view. Note prominent helictoglossae and central nodule. Fig. 106. Headpole with helictoglossa slightly offset from main axis of raphe. Fig. 107. Raised central nodule with proximal raphe ends deflected in the same direction. Internal thickenings are evident in the striae near the axial area. Fig. 108. Footpole, with prominent helictoglossa, small pseudoseptum and thin interstriae dividing the porelli.
PLATE 16, FIGURES 97–101 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 16, FIGURES 97–101. Gomphoneis distorta, LM. Valve views showing size diminution series. Figure 98 is the holotype. Scale bars = 10 µm for all figures.
PLATE 8, FIGURES 39–47 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 8, FIGURES 39–47. Gomphoneis xinjiangiana, LM. Valve views showing size diminution series. Figure 42 is the holotype. Scale bar = 10 µm for all figures.
PLATE 15, FIGURES 91–96. G. rostratoides. SEM. Figs 91–93, external views. Fig. 91 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 15, FIGURES 91–96. G. rostratoides. SEM. Figs 91–93, external views. Fig. 91. Headpole with doubly-punctate striae ending from the valve face onto the mantle. The raphe is deflected slightly before extending onto the mantle. Fig. 92. Central area with biseriate striae tapering to uniseriate striae near the axial area. Proximal raphe ends are dilated. Fig. 93. Footpole, with apical pore fields bilobed, with porelli of the same size and structure as the areolae. Raphe is deflected slightly on the valve face, before extending onto the mantle. Figs 94–96, internal views. Figs 94, 96, headpole and footpole, respectively, showing presence of pseudosepta and helictoglossae. Thin interstriae separate the rows of porelli at the footpole. Fig. 95. Central area with raised central nodule bearing recurved proximal raphe ends. Curved striae taper from doubly punctate to uniseriate. Prominent thickenings are oriented perpendicular to the interstriae and occur when the striae are uniseriate.
PLATE 12, FIGURES 67–76 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 12, FIGURES 67–76. Gomphoneis stoermeri, LM. Valve views showing size diminution series. Figure 68 is the holotype. Scale bar = 10 µm for all figures.
PLATE 5, FIGURES 26–30 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 5, FIGURES 26–30. Gomphoneis qii, LM. Valve views showing size diminution series. Figure 27 is the holotype. Scale bar = 10 µm for all figures.
PLATE 13, FIGURES 77–83. G. stoermeri. SEM. Figs 78–80, external views. Fig. 78 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China
PLATE 13, FIGURES 77–83. G. stoermeri. SEM. Figs 78–80, external views. Fig. 78. Headpole, showing slight bend in the raphe branch, which does not extend onto the mantle. Striae composed of two rows of areolae extend well onto the mantle. Fig. 79. Central area with striae tapering from double to single rows and proximal raphe ends are dilated. Fig. 80. Apical pore field has porelli aligned in double rows at the footpole. The raphe bends slightly before bisecting the pore field. Figs 77, 81–83, internal views. Fig. 77. Entire valve view, with central nodule, helictoglossae and pseudoseptae prominent. The expanded central area is distinct. Figs 81, 83. Headpole and footpole, respectively., with helictoglossae prominent and pseudosepta present. Fig. 82. Central area with raised central nodule bearing proximal raphe ends recurved. Striae taper from doubly punctate to uniseriate. Prominent thickenings oriented perpendicular to the interstriae occur at the point when the striae have single rows of areolae.
Figure 4 in Gomphonema incrassata sp. n., a new benthic diatom species (Bacillariophyceae: Gomphonemataceae) from Walayar Dam, Palakkad district, Kerala, India
Figure 4. Scanning electron microscopic image of Gomphonema incrassata sp. n.
Figure 3 in Gomphonema incrassata sp. n., a new benthic diatom species (Bacillariophyceae: Gomphonemataceae) from Walayar Dam, Palakkad district, Kerala, India
Figure 3. Outer layer of Gomphonema incrassata sp. n.
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