Find research datasets worth reusing

FIGURES 65–77 in Novel diatom species (Bacillariophyta) from the freshwater discharge site of Laguna Diablas (Island Isabela = Albemarle) from the Galapagos

FIGURES 65–77: Frustulia galapagosaxonica sp. nov. LM images. Valve view, showing size diminution series. Fig. 67 is of the holotype. Figs 72–77: with DIC, differential interference contrast, remaining bright field. Scale bar = 10 μm.

FIGURES 101–106 in Novel diatom species (Bacillariophyta) from the freshwater discharge site of Laguna Diablas (Island Isabela = Albemarle) from the Galapagos

FIGURES 101–106: Eunotia pacificomonodon sp. nov. SEM external valve views. Fig. 101: valve arched with non-parallel margins with rather evenly spaced striae. Figs 102–105: terminal raphe fissures on valve face very long, parallel to the pole, extending to the dorsal margin (arrow in Fig. 102). Fig. 106: specimen in a girdle/valve view. Shortened striae present on the abvalvar margin of the valve mantle (arrow).

FIGURES 88–100 in Novel diatom species (Bacillariophyta) from the freshwater discharge site of Laguna Diablas (Island Isabela = Albemarle) from the Galapagos

FIGURES 88–100: Eunotia pacificomonodon sp. nov. LM images. Figs 88–98: valve views, size diminution series, Figs 99, 100: valves in girdle view. Fig. 95 is of the holotype. Scale bar = 10 μm.

FIGURES 174–179 in Novel diatom species (Bacillariophyta) from the freshwater discharge site of Laguna Diablas (Island Isabela = Albemarle) from the Galapagos

FIGURES 174–179: Pinnularia valdecontroversa sp. nov. SEM internal valve views. Figs 174, 177: striae radiate in the proximal part of valve, in the distal part becoming strongly asymmetrical about the apical axis. Fig. 175: proximal raphe ends small, slit-shaped, bent in the same direction towards valve secondary side (arrows). Figs 176, 178, 179: distal raphe ends terminate in small helictoglossae (arrow in Fig. 179). Note the open alveolae (Fig. 176 arrow).

FIGURES 107–120 in Novel diatom species (Bacillariophyta) from the freshwater discharge site of Laguna Diablas (Island Isabela = Albemarle) from the Galapagos

FIGURES 107–120: Eunotia isabelensis sp. nov. LM images. Figs 107–115: valve views, size diminution series, Figs 116, 117: frustules in girdle view. Fig. 107 is of the holotype. Scale bar = 10 μm for LM figures. Figs 118, 119: SEM girdle views of frustule. Fig. 118: ventral side of a frustule with the short raphe branches (arrows). Fig. 119: dorsal side of a frustule with less differentiated ribs and perforations than ventral side. Fig. 120: internal valve view with distal raphe end forming a well-developed helictoglossa (arrow).

FIGURES 62–65 in Resolving the confusion between two fossil freshwater diatoms from Otago, New Zealand: Encyonema jordanii and Encyonema jordaniforme (Cymbellaceae, Bacillariophyta)

FIGURES 62–65. Scanning electron micrographs from sample AT82 (Encyonema jordani, Otago, New Zealand, Weissflog Collection, Jordan, 4/1882) present in the Hustedt Collection in Bremerhaven (Germany). 62. External view of an entire valve. 63. External view of the valve apex showing the terminal raphe fissure. 64. Internal view of an entire valve showing the helictoglossa and the deflected proximal raphe endings. 65. Internal view of the central area showing the intermissio and the square-shaped areolae. Scale bar represent 10 μm in figs 62, 64 and 1 μm for figs 63, 65.

FIGURES 25–61. E. jordanii. 25–43 in Resolving the confusion between two fossil freshwater diatoms from Otago, New Zealand: Encyonema jordanii and Encyonema jordaniforme (Cymbellaceae, Bacillariophyta)

FIGURES 25–61. E. jordanii. 25–43. Light micrographs from sample AT82 (Encyonema jordani, Otago, New Zealand, Weissflog Collection, Jordan, 4/1882) present in the Hustedt Collection in Bremerhaven (Germany). 44–61. Light micrographs from sample Slide VIII-2-B1 (Van Heurck Collection, Botanic Garden Meise, Belgium). Scale bar represents 10 μm.

FIGURES 85–89 in Resolving the confusion between two fossil freshwater diatoms from Otago, New Zealand: Encyonema jordanii and Encyonema jordaniforme (Cymbellaceae, Bacillariophyta)

FIGURES 85–89. Scanning electron micrographs of E. jordaniforme from Foulden Maar. 85. External view of an entire valve. 86. External view of the central area showing small rounded areolae and almost straight proximal raphe endings. 87. External view of a valve apex showing the terminal raphe fissure. 88. Internal view of an entire valve. 89. Internal view of the central area showing the deflected proximal raphe endings with a broad intermissio. Scale bar represent 10 μm for figs 85, 88 and 1 μm for figs 86, 87, 89.

FIGURES 1–24. 1–2. P. T in Resolving the confusion between two fossil freshwater diatoms from Otago, New Zealand: Encyonema jordanii and Encyonema jordaniforme (Cymbellaceae, Bacillariophyta)

FIGURES 1–24. 1–2. P. T. Cleve's original figures of Encyonema jordanii. 3–10. E. jordanii from Hustedt in A.Schmidt Atlas plate 379. 11–16. E. jordanii sensu Foged 1979, Krammer's type for E. jordaniforme. 17. Foged's sample phial 508 photographed by Nina Lindholm. 18–24. Raeside's figures of Cymbella jordanii. Scale bars represent 10 μm.

FIGURES 66–84 in Resolving the confusion between two fossil freshwater diatoms from Otago, New Zealand: Encyonema jordanii and Encyonema jordaniforme (Cymbellaceae, Bacillariophyta)

FIGURES 66–84. Light micrographs of E. jordaniforme from Foulden Maar (sample 7 U. K.). Scale bar represents 10 μm.

FIGURES 33–36 in Ninastrelnikovia lateritica sp. nov., a new and rare freshwater diatom species from the rocky pools of the Western Ghats, India with a note on the genus Ninastrelnikovia Lange-Bertalot & A.Fuhrmann (Bacillariophyta)

FIGURES 33–36. Close up of internal valves of Ninastrelnikovia lateritica sp. nov. (SEM). 33. Proximal raphe ends strongly deflected onto the same side and internally open areolae. 34 & 35. Distal raphe end ending in helictoglossae. 36. Straight or rudimentarily developed proximal raphe end found in a intermediate valve which attached with another valve by interdigitating, long spatulate spines (arrows). (All scale bars represent 1 μm).

FIGURES 20–28 in Ninastrelnikovia lateritica sp. nov., a new and rare freshwater diatom species from the rocky pools of the Western Ghats, India with a note on the genus Ninastrelnikovia Lange-Bertalot & A.Fuhrmann (Bacillariophyta)

FIGURES 20–28. Detail of the external views of Ninastrelnikovia lateritica sp. nov. frustules (SEM). 20 & 21. Apices showing distal raphe ends of terminal and intermediate valves respectively. 22. Girdle view of the apex of a frustule showing pseudospines (arrows), spatulate spines (arrowheads) with distal raphe end curving towards the mantle. 23. Middle part of the terminal valve showing fully developed raphe system. 24. Middle part of the intermediate valve showing rudimentary raphe. 25. Girdle view of the middle part of a frustule showing pseudospines (arrow), linking spines (arrowhead) and silica granules (round pointer). 26 & 27. Apices showing distal raphe ends of terminal and intermediate valves respectively. 28. Another broken frustule apex showing raphe slit (arrow). (All scale bars represent 1 μm).

FIGURES 15–19 in Ninastrelnikovia lateritica sp. nov., a new and rare freshwater diatom species from the rocky pools of the Western Ghats, India with a note on the genus Ninastrelnikovia Lange-Bertalot & A.Fuhrmann (Bacillariophyta)

FIGURES 15–19. External views of Ninastrelnikovia lateritica sp. nov. frustules (SEM). 15 & 16. Face views of cell colony terminating valves bearing longitudinally oriented siliceous slat system. 17 & 18. Face views of intermediate valves of cell colony showing linking spatulate spines and wedge shaped pluriseriate areolae. 19. Girdle view of cell colony terminating frustule. (All scale bars represent 2 μm).

FIGURES 1–14 in Ninastrelnikovia lateritica sp. nov., a new and rare freshwater diatom species from the rocky pools of the Western Ghats, India with a note on the genus Ninastrelnikovia Lange-Bertalot & A.Fuhrmann (Bacillariophyta)

FIGURES 1–14. LM-micrographs of Ninastrelnikovia lateritica sp. nov., from the type population; valve views showing the size diminution series. Holotype depicted in Fig. 11. 3 & 4. Frustules in valve view with high and low focusing showing distinct raphe and central nodule. 8 & 9. Showing reduced raphes with wider spaced central endings (Scale bar represents 10 μm).

FIGURES 29–32 in Ninastrelnikovia lateritica sp. nov., a new and rare freshwater diatom species from the rocky pools of the Western Ghats, India with a note on the genus Ninastrelnikovia Lange-Bertalot & A.Fuhrmann (Bacillariophyta)

FIGURES 29–32. Internal views of Ninastrelnikovia lateritica sp. nov. frustules (SEM). 29–31. Whole valve showing striae pattern, central area, proximal raphe ends and narrowly elliptical valve shape with gradually swollen centre. 32. One terminal cell (arrows) connected with another intermediate valve that showing proximal raphe end. (All scale bars represent 3 μm).

FIGURES 37–40 in Ninastrelnikovia lateritica sp. nov., a new and rare freshwater diatom species from the rocky pools of the Western Ghats, India with a note on the genus Ninastrelnikovia Lange-Bertalot & A.Fuhrmann (Bacillariophyta)

FIGURES 37–40. Close up of internal valves of Ninastrelnikovia lateritica sp. nov. (SEM). 37. Curved proximal raphe end found in a intermediate valve as it bears spines (arrows). 38 & 39. Curved proximal raphe end found in a terminal valve which shows slender siliceous slats (arrows). 40. A broken apical part showing strut like structures which holds the mantle. (All scale bars represent 1 μm).

FIGURES 10–13. SEM, external views. Fig. 10 in Halamphora daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China

FIGURES 10–13. SEM, external views. Fig. 10. External view of an entire valve. Fig. 11. Ventral view of entire frustule with girdle bands. Fig. 12. Entire valve seen from the dorsal side in oblique view showing the dorsal mantle and girdle bands. Fig. 13. Entire valve seen from the dorsal side showing the girdle band areolae. Scale bars = 10 μm.

FIGURES 1–9 in Halamphora daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China

FIGURES 1–9. LM micrographs of the type population of Halamphora daochengensis in Lake Congqiancuo. Figs 1–7. Valve views, showing the valve variability of the holotype population. Figs 8, 9. Light micrographs showing the frustule in girdle view. Scale bar = 10 μm.

FIGURES 14–19 in Halamphora daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China

FIGURES 14–19. SEM, detail of external valve views. Fig. 14. View of central area with numerous girdle bands. Figs 15, 16. View of frustule end and girdle bands with rows of rounded poroids. Fig. 17. External detail of the valve centre. Fig. 18. External detail of valve apex showing the prominent raphe ledge. Fig. 19. External detail of part of the dorsal valve, valve face/mantle margin and mantle. Scale bars =2 μm (Figs 14, 17), 3 μm (Fig. 18), 5 μm (Figs 15, 16, 19).

FIGURES 20–25. SEM, internal valve views. Fig. 20 in Halamphora daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China

FIGURES 20–25. SEM, internal valve views. Fig. 20. Internal view of entire valve with girdle bands. Fig. 21. Oblique view of valve. Fig. 22, 23. Internal view of valve apex with prominent helictoglossa. Fig. 24. Internal view of valve centre with girdle bands. Fig. 25. Internal view of valve centre with fused helictoglossa. Scale bars = 2 μm (Figs 22, 23), 3 μm (Fig. 25), 5 μm (Figs 20, 21, 24).