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129 results for “Diploneis”
Fig. 4 in Taxonomy and distribution of two small negligible diatoms of Plagiogrammopsis minima and Diploneis aestuarii from Northeast Asian tidal flats
Fig. 4. Light microscope (LM) photographs of Diploneis aestuarii: A-N. Size range in valve view. Scale bar = 10 μm.
Fig. 3 in Taxonomy and distribution of two small negligible diatoms of Plagiogrammopsis minima and Diploneis aestuarii from Northeast Asian tidal flats
Fig. 3. Scanning electron microscope (SEM) photographs of Plagiogrammopsis minima from A-D (Minami-arao, Japan), E, F (Nakdong, Busan, Korea): A. Entire view of the girdle. Arrow indicates row of the short spines on the valve face. Large arrowhead indicates girdle bands ornamented by a row of poroids; B. External view of the valve face with girdle bands. Right arrow indicates pseudoseptum extends from margin to margin in the central fascia. Left arrow indicates the cribrum occlusion; C. External view of the whole valve. Large arrowheads indicate the two ocelluli which are twisted to opposite directions along the valve axis. Arrow indicates the cribrum occlusion; D. Internal view of the whole valve. Large arrowheads indicate the two ocelluli which are twisted to opposite directions at valve apex. Arrow indicates internal view of the cribrum occlusion located outside of the areolae; E. Right arrow indicates the pseudosptum while left arrow indicates external aperture of the rimoportula; F. Right arrow indicates the pseudosptum while left arrow indicates a rimoportula.
Figs. 67-69. Diploneis zannii. 67, 68 in O gênero Diploneis Ehrenberg ex Cleve (Bacillariophyceae) em marismas do sul do Brasil
Figs. 67-69. Diploneis zannii. 67, 68. Vista geral (MO). 69. Vista externa (MEV), evidenciando os canais longitudinais (cabeça de seta preta) e as estrias (cabeça de seta branca). Barras = 10 µm.
Figs. 52-62. Diploneis subovalis. 52-54 in O gênero Diploneis Ehrenberg ex Cleve (Bacillariophyceae) em marismas do sul do Brasil
Figs. 52-62. Diploneis subovalis. 52-54. Vista geral (MO). 55-58. Vista interna (MEV). 56-58. Detalhe das extremidades proximais (cabeças de setas branca) e distais (cabeças de setas preta) da rafe e das estrias (seta branca); 59-62. Vista externa (MEV), evidenciando a variação na largura da área central; 61. Extremidade distal da rafe (cabeça de seta preta); 62. Detalhe da extremidade proximal da rafe (cabeça de seta branca), das estrias (seta branca) e dos canais longitudinais (seta preta) ornamentados por linhas de 1-4 pequenos poros. Barras: Figs. 52-55, 59, 60 = 10 µm; Figs. 56, 61, 62 = 5 µm; Figs. 57, 58 = 1µm.
Figs. 46-51 in O gênero Diploneis Ehrenberg ex Cleve (Bacillariophyceae) em marismas do sul do Brasil
Figs. 46-51. Diploneis smithii (MEV). 46, 47. Vista interna. 47. Detalhe das estrias (seta branca), extremidades proximais (cabeça de seta branca) e distais (cabeça de seta preta) da rafe. 48-51. Vista externa. 48. Extremidade proximal (cabeça de seta branca) e distal (cabeça de seta preta) da rafe; 50. Extremidade distal da rafe (cabeça de seta preta); 51. Detalhe dos canais longitudinais (seta preta), aréolas cribradas (cabeça de seta preta) e extremidade proximal da rafe (cabeça de seta branca) Barras: Figs. 46, 48-50 = 10 µm; Figs. 47, 49, 51 = 5 µm.
Figs. 40-45 in O gênero Diploneis Ehrenberg ex Cleve (Bacillariophyceae) em marismas do sul do Brasil
Figs. 40-45. Vista geral de Diploneis nitescens (MO). 43-45. Vista geral de Diploneis smithii (MO). Barras: 10 µm.
Figs. 18-27. Diploneis interrupta. 18-20 in O gênero Diploneis Ehrenberg ex Cleve (Bacillariophyceae) em marismas do sul do Brasil
Figs. 18-27. Diploneis interrupta. 18-20. Vista geral (MO). 21-27. Vista externa (MEV). 22. Extremidade proximal da rafe (seta branca), canais longitudinais compostos por uma fileira de pequenas aréolas (cabeça de seta preta); 23. Extremidade distal da rafe (seta preta), estrias terminando em sulcos marginais reniformes (cabeça de seta branca); 24. Aréolas dos canais longitudinais com oclusões do tipo vola (cabeça de seta); 25. Vista da extremidade da valva; 26. Estrias formadas por um único canal composto por aréolas volatas (cabeça de seta preta), terminando em um sulco marginal (cabeça de seta branca); 27. Detalhe dos canais longitudinais (cabeça de seta preta). Barras: Figs. 18-21 = 10 µm; Fig. 25 = 2 µm; Fig. 22, 23, 26, 27 = 1 µm; Fig. 24 = 0,5 µm.
Figs. 3-8. 3-5 in O gênero Diploneis Ehrenberg ex Cleve (Bacillariophyceae) em marismas do sul do Brasil
Figs. 3-8. 3-5. Vista geral de Diploneis aestuari (MO). 6-8. Vista geral de Diploneis bombus (MO). Barras = 10 µm.
Figs. 63-66. Diploneis weissflogii. 63, 64 in O gênero Diploneis Ehrenberg ex Cleve (Bacillariophyceae) em marismas do sul do Brasil
Figs. 63-66. Diploneis weissflogii. 63, 64. Vista geral (MO), evidenciando a área central areolada (seta branca). 65. Vista conectival externa (MEV); 66. Vista valvar externa (MEV), evidenciando os canais longitudinais (cabeça de seta preta), estrias (cabeça de seta branca) e área central areolada (seta preta). Barras = 10 µm.
FIGURE 1 in New diatom species Diploneis zhui sp. nov. from Jiuzhaigou National Nature Reserve, China
FIGURE 1. Map of Jiuzhaigou National Nature Reserve and location of the study sites (1= Rhinoceros Lake, 2=Long Lake, 3= Arrow Bamboo Lake, 4= Mirror Lake, 5= The Peacock Riverbed, and 6= Reed Lake).
FIGURES 26–30 in New diatom species Diploneis zhui sp. nov. from Jiuzhaigou National Nature Reserve, China
FIGURES 26–30. Diploneis zhui sp. nov. Scanning electron microscopy. Figs 26, 27. External view of the entire valve. Figs 28, 30. External view of the middle of the valve. Fig. 29. Detailed external view of the valve end. Scale bar = 5 μm (26, 27), 2 μm (28–30).
FIGURES 31–35 in New diatom species Diploneis zhui sp. nov. from Jiuzhaigou National Nature Reserve, China
FIGURES 31–35. Diploneis zhui sp. nov. Scanning electron microscopy. Figs 31, 32. Internal view of the entire valve. Figs 33. Internal view of half of the valve. Fig. 34. Detailed internal view of the valve end. Fig. 35. Detailed internal view of the valve centre. Scale bar = 5 μm (31, 32), 2 μm (33–35).
FIGURES 2–25 in New diatom species Diploneis zhui sp. nov. from Jiuzhaigou National Nature Reserve, China
FIGURES 2–25. Diploneis zhui sp. nov. Light microscopy. Valve size diminution series. Scale bar = 10 μm.
FIGURES 21–26 in A new small marine Diploneis species (Diploneidaceae, Bacillariophyta) from Guangdong Province, China
FIGURES 21–26. Diploneis guangdongensis sp. nov., SEM external valve view. 21. External view of the whole valve. 22–23. External view of the elongated slits (Fig. 22, white arrow) and distal raphe endings. 24. Expanded, drop-shaped proximal raphe endings and structure of the longitudinal canal; the elongated slits are formed as an interspace between costae (white arrow). 25. Girdle bands. 26. External opening of alveoli covered with volae. Scale bars = 1 µm (Figs 21–22, 24–26); 500 nm (Fig. 23).
FIGURES 1–20 in A new small marine Diploneis species (Diploneidaceae, Bacillariophyta) from Guangdong Province, China
FIGURES 1–20. Diploneis guangdongensis sp. nov. LM. 1–20. Valve view showing the size and shape. Fig. 2. Holotype specimen. Scale bars = 10 µm.
FIGURES 27–32 in A new small marine Diploneis species (Diploneidaceae, Bacillariophyta) from Guangdong Province, China
FIGURES 27–32. Diploneis guangdongensis sp. nov., SEM internal valve views. 27. View of the entire valve. 28. Girdle bands. 29. Valve central area with slightly expanded proximal raphe endings bent to the same side of the valve. 30. Distal raphe endings and elongated alveoli occluded by a thin siliceous layer with perforations arranged in a hexagonal array. 31–32. Areolae in the corroded valve. Scale bars = 1 µm (Figs 27–28, 30, 32); 500 nm (Figs 29, 31).
FIGURES 152–165 in The genus Diploneis Ehrenberg ex Cleve (Bacillariophyta) from Lake Hövsgöl, Mongolia
FIGURES 152–165. Diploneis exigua, LM and SEM valve views. Figs 152–159. LM valve views. Figs 153, 156, 158. Specimens from the holotype slide, M272A. Fig. 160. External view of the entire valve. Fig. 161. External distal raphe endings with short terminal fissure. Fig. 162. Broken valve, showing the external and internal opening of the alveolate striae. Fig. 163. Internal view of the distal raphe endings. Fig. 164. Showing the simple proximal raphe endings from the interior. Fig. 165. Internal view of the whole valve. Scale bars = 10 μm (Figs 152–160, 165); 3 μm (Fig. 161); 2 μm (Fig. 162); 1 μm (Figs 163, 164).
FIGURES 253–271 in The genus Diploneis Ehrenberg ex Cleve (Bacillariophyta) from Lake Hövsgöl, Mongolia
FIGURES 253–271. LM and SEM external valve views. Fig. 253. Diploneis cf. eximia, LM valve view. Figs 254, 255. Diploneis cf. minuta, SEM external valve views. Fig. 254. Valve view. Fig. 255. Proximal raphe endings. Figs 256–259. Diploneis sp. 1. Fig. 256. LM valve view. Fig. 257. Central area with proximal raphe endings, SEM. Fig. 258. Distal raphe endings, SEM. Fig. 259. View of the entire valve, SEM. Figs 260–269. Diploneis sp. 2, LM valve views. Fig. 270. Diploneis sp. 3, LM valve view. Fig. 271. Diploneis sp. 3, LM valve view. Scale bars = 10 μm (Figs 253, 256, 260–271); 5 μm (Figs 254, 259); 2 μm (Figs 255, 257, 258).
FIGURES 166–183 in The genus Diploneis Ehrenberg ex Cleve (Bacillariophyta) from Lake Hövsgöl, Mongolia
FIGURES 166–183. LM valve views. Figs 166–169. Diploneis elliptica cf. var. ladogensis. Figs 170–172. Diploneis pseudovalis. Figs 173–178. Diploneis subovalis. Fig. 179. Diploneis mongolica. Figs 180–183. Diploneis spectabilis. Scale bar = 10 μm.
FIGURES 206–210, 213–219 in The genus Diploneis Ehrenberg ex Cleve (Bacillariophyta) from Lake Hövsgöl, Mongolia
FIGURES 206–210, 213–219. Diploneis aff. heteromorphiforma, LM and SEM valve views. Figs 211, 212. Diploneis dimorpha, type slide (O4/78) from Hustedt collection, the Friedrich Hustedt Study Centre for Diatoms in Bremerhaven, Germany. Figs 206–212. LM valve views. Fig. 213. Valve central area with proximal raphe endings. Fig. 214. View of the whole valve. Fig. 215. Close view of the external distal raphe endings. Fig. 216. Internal valve view. Fig. 217. Internal view of the central area with proximal raphe ends. Fig. 218. Showing the distal raphe endings from the interior. Fig. 219. View of the alveoli structure in a corroded specimen. Scale bars = 10 μm (Figs 206–212, 216); 5 μm (Figs 214, 219); 2 μm (Figs 213, 215, 217, 218).
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