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FIGURES 2–28 in Sellaphora jiuzhaienis sp. nov. (Bacillariophyceae)-A new diatom species from Jiuzhaigou National Nature Reserve, China

FIGURES 2–28. Sellaphora jiuzhaienis sp. nov. Light microscopy (LM). Valve size diminution series. Scale bar = 10 μm.

FIGURE 1 in Sellaphora jiuzhaienis sp. nov. (Bacillariophyceae)-A new diatom species 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 35–39 in Sellaphora jiuzhaienis sp. nov. (Bacillariophyceae)-A new diatom species from Jiuzhaigou National Nature Reserve, China

FIGURES 35–39. Sellaphora jiuzhaienis sp. nov. Scanning electron microscopy (SEM). Fig. 35. Internal view of entire valve. Figs 36, 39. Internal view of half of the valve. Fig. 37. Detailed internal view of the valve centre. Fig. 38. Internal view of valve apex (white arrow indicates dome-shaped hymens), Scale bar = 5 μm (35), 2 μm (36–39).

FIGURES 29–34 in Sellaphora jiuzhaienis sp. nov. (Bacillariophyceae)-A new diatom species from Jiuzhaigou National Nature Reserve, China

FIGURES 29–34. Sellaphora jiuzhaienis sp. nov. Scanning electron microscopy (SEM). Figs 29–31. External view of entire valve. Figs 32, 33. External view of half of the valve. White arrow indicates narrow grooves surrounding the conopeum. Fig. 34. Detailed external view of the valve centre (white arrow indicates narrow grooves surrounding the conopeum). Scale bar = 5 μm (29–31), 2 μm (32–34).

opennotspecifiedDec 2023View details →

FIGURES 15–20 in Cymbella alexandrovichii sp. nov. (Cymbellaceae, Bacillariophyceae), a new cymbelloid diatom species with predominantly biseriate striae from South-East Asia

FIGURES 15–20. Cymbella alexandrovichii sp. nov. SEM, type material, sample no. 01612. Internal valve surface. 15. The whole valve, note that the interstriae wider than striae (white arrows). 16–17. Details of the central areae, note the closed terminal nodule (16–17, black arrows); interstriae wider than striae (16, white arrows); rounded or elongated stigmata openings, surrounded by fine ingrowths from their perimeter (16–17, white arrowheads). 18. Internal structure of striae, note the Voigt discontinuity (18, white arrow). Alveolate striae are located in depressions between interstriae (virgae) (18, black arrows) and occlusions are absent. 19–20. Details of the apices, note the APFs (19–20, black arrows); helictoglossa (19–20, black arrowheads); the interstriae that are narrower than striae (19–20, white arrows). Scale bars = 5 µm (Fig. 15), 2 µm (Fig. 16), 1 µm (Figs 17–20).

opennotspecifiedDec 2023View details →

FIGURES 1–8 in Cymbella alexandrovichii sp. nov. (Cymbellaceae, Bacillariophyceae), a new cymbelloid diatom species with predominantly biseriate striae from South-East Asia

FIGURES 1–8. Cymbella alexandrovichii sp. nov. LM, DIC, type material, slide no. 01612. Fig. 2 represents the holotype. 1–6. Size diminution series. 7. Details of the central area. 8. Details of the valve end. Scale bars = 10 μm (Figs 1–6), 2 μm (Figs 7–8).

opennotspecifiedDec 2023View details →

FIGURES 9–14 in Cymbella alexandrovichii sp. nov. (Cymbellaceae, Bacillariophyceae), a new cymbelloid diatom species with predominantly biseriate striae from South-East Asia

FIGURES 9–14. Cymbella alexandrovichii sp. nov. SEM, type material, sample no. 01612. External valve surface. 9. The whole valve, note the slightly widened central branches of the raphe (white arrowheads); terminal raphe fissure (black arrowhead); Voigt discontinuities (black arrow). 10–12. Details of the central area, note the slightly widened central branches of the raphe (10, white arrowheads); biseriate (10, black arrowheads) and uniseriate striae (11, white arrowheads) with single slit-like (12, white arrows) or round (11–12, white arrowheads) areolae; ventral stigmata (10–11, black arrows). 13–14. Details of the apices, note the terminal raphe fissure (13, black arrowhead); biseriate striae on the valve mantle (13–14, black arrows); apical pore field (13–14, white arrowhead). Scale bars = 10 µm (Fig. 9), 2 µm (Figs 10, 12), 1 µm (Figs 11, 13–14).

opennotspecifiedApr 2014View details →

FIGURES 21–30 in Auxosporulation, morphology of vegetative cells and perizonium of Fallacia tenera (Hust.) D.G. Mann (Bacillariophyceae)

FIGURES 21–30: The fine structure of a complete cingulum. Bars in Figs 21, 22, 28 are 2 µm. Bars in Figs 23–27 and Fig. 28 are 1 µm. The bar in Fig. 30 is 500 nm. Fig. 21. A complete theca, two ligulae (arrow and arrowhead) of pleurae could been found at the two terminals. Fig. 22. An open valvocopula with undulate margin. Fig. 23. The internal view of a ligula (arrow) of the pleura 2 (the third band). Fig. 24. The external view of the ligula (arrow) of the pleura 2 (the third band). Fig. 25. The external view of a ligula of the pleura 1 (the second band). Fig. 26. The internal view of the ligula (arrowhead) of the pleura 1 (the second band). Fig. 27. The linear strip (arrow) of the pleura 2 (the third band). Fig. 28. The two terminals of the linear strips (arrows) of the pleura 2 (the third band). Fig. 29. The linear strip (arrow) of pleura 2 (the third band) and the linear strip (arrowhead) of pleura 1 (the second band). Fig. 30. The two terminals (arrowheads) of pleura 1 (the second band).

opennotspecifiedApr 2014View details →

FIGURES 9–20 in Auxosporulation, morphology of vegetative cells and perizonium of Fallacia tenera (Hust.) D.G. Mann (Bacillariophyceae)

FIGURES 9–20: The fine structure of Fallacia tenera in SEM and TEM. All Scale bars = 1 µm except Figs 9, 10, 18 (2 µm) and Figs 19–20 (200 nm). Figs 9–10. Plan view (Figs 19–20) of external valve face and internal valve face. Figs 11–12. View of external and internal valve face at 30°tilt. Fig. 13. The detail of a frustule terminal. Note the finely porous conopeum (arrow) and two pores (arrowhead) lies beside the terminal fissures. Fig. 14. The broken valve shows a round areola (arrow) which should be covered by a conopeum and a "peg" (arrowhead), a silica flip. Fig. 15. The broken valve showing the depressed sterna (arrow). And also the "peg" (arrowhead) extend from the edge of the valve mantle. Fig. 16. The undulate margin of the conopeum. Fig. 17. The lumen between the conopeum and the valve (arrow), connecting outside through the terminal pores (arrowhead). Fig. 18. TEM photograph of a valve clearly shows the hyaline canal (arrowhead) and some silica structures (arrow) supporting the conopeum. Figs 19–20. The pattern of the areolae in longitudinal lines on the valve surface (fig. 19. Areolae are between the raphe and the canal, fig. 20, left) and on the mantle of valve. (fig. 20, right). They all belong to hexagonal array of hymen.

opencc-zeroApr 2024View details →

Supplementary material 8 from: Olszyński RM, Zakrzewski PK, Rimet F, Sulkowska J, Peszek Ł, Żelazna-Wieczorek J (2024) Morphology and phylogeny of Nitzschia nandorii sp. nov. (Bacillariophyceae), a new small-celled lanceolate species from a post-mining reservoir. PhytoKeys 241: 1-26. https://doi.org/10.3897/phytokeys.241.117406

Confocal Laser Scanning Microscopy projection of rotating chloroplast of Nitzschia nandorii sp. nov.

opennotspecifiedMar 2021View details →

FIGURES 35–40 in A new species of Epithemia Kützing (Bacillariophyceae, Rhopalodiales) from the Mula river, Western Ghats, India, with comments on the phylogenetic position of Rhopalodia and Epithemia

FIGURES 35–40. Epithemia agharkarii sp. nov., SEM from the type material (AHMA #1405), external and internal views. 35, 36. Dorsal frustule showing a regularly sculptured outer surface (Fig. 35, arrows) of the valve with C-type foramina, single row of poroids on the valvocopula and cingulum elements (Fig. 35, asterisks). 37. Ventral view of valve internal with primary (arrows) and secondary fibular costae (arrows), alveolus. 38. Internal view showing the siliceous extensions of the ribs indicated by asterisks. 39. Magnified view of primary fibular costae inside with secondary fibular costae, alveolus (asterisks), C-shaped foramina (arrows), silica processes, and irregularly shaped portula with internal raphe (arrowheads) inside the canal. 40. Broken valve showing the raphe canal (arrows), portula (arrowheads) and stright distal raphe ending. Scale bar = 10 μm (Fig. 35), 2 μm (Fig. 36), 4 μm (Figs 37, 38, 40), 1 μm (Fig. 39).

opennotspecifiedMar 2021View details →

FIGURES 1–28 in A new species of Epithemia Kützing (Bacillariophyceae, Rhopalodiales) from the Mula river, Western Ghats, India, with comments on the phylogenetic position of Rhopalodia and Epithemia

FIGURES 1–28. Epithemia agharkarii sp. nov., LM (DIC) from the type material (AHMA #1405). 1–28. Valves, focused on the ventral part of the valve face, showing the valve variability of the population. 4–5. Same valve showing fibular costae. 21–26. Frustule focused on the ventral girdle view of the frustule variability of the holotype population. Fig. 20 represents the holotype. Figs 3, 20, and 28. In LM view, arrows showing the raphe, extending from near the ventral margin at the apices to nearly the dorsal margin in the center. 24. In LM view, arrows indicating the terminal thickenings of the transapical costae. Scale bar = 10 μm, Figs 1–20 (Fig. 8) & 21–28 (Fig. 21).

FIGURES 106, 107 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 106, 107. SEM micrographs of Cocconeis species (11). Figs 106, 107. Cocconeis schmidtii, the internal view of SV (Fig. 106), the external view of RV (Fig. 107). Scale bars = 2 μm (Figs 106, 107).

FIGURES 88–93 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 88–93. SEM micrographs of Cocconeis species (8). Figs 88, 89. C. pseudomarginata var. intermedia, the external view (Fig. 88) and internal view of SVs (Fig. 89). Fig. 90. C. dirupta var. flexella, the external valve of SV. Figs 91–93. C. cf. diruptoides, the external view of SVs (Figs 91, 92), and the internal view of RV (Fig. 93). Scale bars = 5 μm (Figs 88, 89), 2 μm (Figs 90, 92), 1 μm (Fig. 93).

FIGURE 2 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURE 2. Field images of two seaweeds, Melanothamnus harlandii (A, B) and Gelidium elegans (C, D), which are representative ones among host plants and were collected in St. 1.

FIGURES 25–44 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 25–44. LM micrographs of Cocconeis species (2). Figs 25, 26. Cocconeis cf. diruptoides, RV (Fig. 25) and SV (Fig. 26). Figs 27–32. C. dirupta var. dirupta, SVs (Figs 27–31) and RV (Fig. 32). Figs 33–37. C. dirupta var. flexella, SVs (Figs 34–36) and RVs (Figs 33, 37). Figs 38–41. C. delicata, RVs (Figs 38) and SVs (Figs 39, 40, 41). Figs 42–44. C. convexa, SVs (Figs 42, 43) and RV (Fig. 44). Scale bar = 10 μm (Figs 25–44).

FIGURE 1 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURE 1. Map of Jeju Island (dotted square), the southernmost regions of Korea (left), the four localities for diatom samplings in Seogwipo coast of Jeju Island (right). St. 1: A partly closed water body surrounded by volcanic rocks in the coast, a kind of shallow pseudo-lagoon with a lot of seaweeds (a representative point, 33o18'N 126o49'E). St. 2: As a rocky coast, there are small pools on rocks after high tide (33o25'N 126o55'E). St. 3: A large open lagoon where seawater moves at low and high tide through one entrance (33o27'N 126o55'E). St. 4: A lake in coast, a field of reeds in the mouth area, where many migratory birds flock (33o30'N 126o53'E).

FIGURES 69–76 in Distribution of the genus Cocconeis (Bacillariophyceae) along the Seogwipo coast of Jeju Island, South Korea

FIGURES 69–76. LM micrographs of Cocconeis species (5). Figs 69–72. Cocconeis pseudomarginata, RVs (Figs 69, 72) and SVs (Figs 70, 71) (Figs 69 and 70, a complete valve). Figs 73–76. C. pseudomarginata var. intermedia, RVs (73, 76) and SVs (Figs 74, 75). Scale bar = 10 μm (Figs 69–76).