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79 results for “Achnanthidiaceae”
FIG. 2 in Two new species of Achnanthidium Kützing (Achnanthidiaceae) from the Quaternary sediments of the Colônia basin, Southeast Brazil
FIG. 2. — Achnanthidium ectorianum Marquardt & C.E.Wetzel, sp. nov. Population from the type locality. SEM: A-E, external views, raphe valve; F, internal view, raphe valve. Scale bars: A, 4 µm; B-F, 5 µm.
FIG. 7 in Two new species of Achnanthidium Kützing (Achnanthidiaceae) from the Quaternary sediments of the Colônia basin, Southeast Brazil
FIG. 7. — Achnanthidium craterianum Marquardt & C.E.Wetzel, sp. nov. Population from the type locality. SEM: A-D, internal views; A-C, raphe valve; B, detail of helictoglossa, apical striae, and areolae; C, detail of the central area and transapical striae; D, rapheless valve. Scale bars: 1 µm.
FIG. 5 in Two new species of Achnanthidium Kützing (Achnanthidiaceae) from the Quaternary sediments of the Colônia basin, Southeast Brazil
FIG. 5. — Achnanthidium craterianum Marquardt & C.E.Wetzel, sp. nov. Population from the type locality. LM micrographs, size diminution series: A-U, raphe valve; V-AH, raphless valve; AI-AJ, frustules in girdle view. Scale bar: 10 μm.
FIG. 1 in Two new species of Achnanthidium Kützing (Achnanthidiaceae) from the Quaternary sediments of the Colônia basin, Southeast Brazil
FIG. 1. — Achnanthidium ectorianum Marquardt & C.E.Wetzel, sp. nov. Population from the type locality. LM micrographs, size diminution series: A-T, raphe valve; U-AM, raphless valve; AN, frustules in girdle view. Scale bar: 10 μm.
FIG. 4 in Two new species of Achnanthidium Kützing (Achnanthidiaceae) from the Quaternary sediments of the Colônia basin, Southeast Brazil
FIG. 4. — Achnanthidium ectorianum Marquardt & C.E.Wetzel, sp. nov. Population from the type locality. SEM: A-C, external views, rapheless valve; D-E, internal views, rapheless valve; F, girdle view. Scale bars: A, 3 µm; B-F, 5 µm.
FIG. 8 in Two new species of Achnanthidium Kützing (Achnanthidiaceae) from the Quaternary sediments of the Colônia basin, Southeast Brazil
FIG. 8. — Achnanthidium craterianum Marquardt & C.E.Wetzel, sp. nov. Population from the type locality. SEM: A-C, girdle views. Scale bars: 1 µm.
FIGURES 27–32. Achnanthidium tibeticum Y in One new species of Achnanthidium Kützing (Bacillariophyta, Achnanthidiaceae) from Tibet, China
FIGURES 27–32. Achnanthidium tibeticum Y.Liu & Kociolek sp. nov. SEM pictures, rapheless valve. 27–30. External view. 27. Whole valve view, showing the round areolae on the valve face (small arrow) and slit-like areolae on the mantle (wide arrow). 28–29. Apices of the same valve. 30. External areolae openings. 31–32. Internal view, apex of the valve (Fig. 31) and of the whole valve (Fig. 32). Scale bars indicated in each figure.
FIGURES 21–26. Achnanthidium tibeticum Y in One new species of Achnanthidium Kützing (Bacillariophyta, Achnanthidiaceae) from Tibet, China
FIGURES 21–26. Achnanthidium tibeticum Y.Liu & Kociolek sp. nov. SEM pictures, internal view of the raphe valve. 21, 26. Whole valve view. 22–23 Helictoglossa of the same valve. 24. Internal opening of the areolae. 25. Proximal raphe ends. Scale bars indicated in each figure.
FIGURES 15–20. Achnanthidium tibeticum Y in One new species of Achnanthidium Kützing (Bacillariophyta, Achnanthidiaceae) from Tibet, China
FIGURES 15–20. Achnanthidium tibeticum Y.Liu & Kociolek sp. nov. SEM pictures, external view of the raphe valve. 15. Whole valve view. 16–17. Distal raphe end from the same valve. 18. Proximal raphe ends. 19. Proximal raphe end and the areolae openings. 20. Whole valve view, showing the round areolae opening on the valve face (small arrow) and slit-like areolae on the mantle (wide arrow). Scale bars indicated in each figure.
FIGURES 1–14. Achnanthidium tibeticum Y in One new species of Achnanthidium Kützing (Bacillariophyta, Achnanthidiaceae) from Tibet, China
FIGURES 1–14. Achnanthidium tibeticum Y.Liu & Kociolek sp. nov. LM images showing the size diminution of the valve. "=" means the raphe valve and rapheless valve are from the same frustule. Scale bar: 10 μm.
FIGURES 1–40 in Achnanthidium guarulhense sp. nov. (Achnanthidiaceae, Bacillariophyta), a new diatom species from a Conservation Unit in Southeast Brazil
FIGURES 1–40. LM images of Achnanthidium guarulhense sp. nov. of the (UPCB 105117) holotype slide from Negro Lake, Guarulhos, state of São Paulo. 1–29. LM views of raphe valves. 30–37. LM views of rapheless valves. 38–40. LM of girdle view. LM scale bar = 10 μm.
FIGURES 41–49 in Achnanthidium guarulhense sp. nov. (Achnanthidiaceae, Bacillariophyta), a new diatom species from a Conservation Unit in Southeast Brazil
FIGURES 41–49. SEM images of Achnanthidium guarulhense sp. nov. of the (UPCB 105117) holotype slide from Negro Lake, Guarulhos, state of São Paulo. 41. SEM external view of raphe valve showing striation pattern, and axial and central areas. 42–44. SEM internal view of the raphe valve. 44. Note the detail of areolae occlusions. 45–46. SEM external view of the rapheless valve. 47. SEM internal view of the rapheless valve. 48–49. SEM showing the girdle view. SEM scale bar = 3 μm; 44 =1 μm; 46, 49 = 4 μm.
FIGURES 27–32 in Achnanthidium petuniabuktianum sp. nov. (Achnanthidiaceae, Bacillariophyta), a new representative of the A. pyrenaicum group from Spitsbergen (Svalbard Archipelago, High Arctic)
FIGURES 27–32. Achnanthidium petuniabuktianum sp. nov. Light and scanning electron micrographs. All pictures taken from the type population (BR-4177). 27–28. SEM external views of an entire rapheless valve. 29. SEM internal view of an entire rapheless valve. 30. SEM detail of an external rapheless valve. 31. SEM detail of an internal rapheless valve. 32. SEM view showing a frustule in girdle view. Scale bars always 10 μm, except Figs 30–31 where scale bar is 1 μm.
FIGURES 2–26 in Achnanthidium petuniabuktianum sp. nov. (Achnanthidiaceae, Bacillariophyta), a new representative of the A. pyrenaicum group from Spitsbergen (Svalbard Archipelago, High Arctic)
FIGURES 2–26. Achnanthidium petuniabuktianum sp. nov. Light and scanning electron micrographs. All pictures taken from the type population (BR-4177). 1. LM view of a frustule in girdle view. 3–11. LM views of raphe valves. 12–19. LM views of rapheless valves. 20–22. SEM external views of an entire raphe valve. 23. SEM detail of the distal raphe ending of a raphe valve. 24. SEM detail of the internal raphe valve. 25–26. SEM internal views of an entire raphe valve. Scale bars always 10 μm, except Figs 23–24 where scale bar is 1 μm and Fig. 25 where scale bar is 5 μm.
FIGURES 352–355 in Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China
FIGURES 352–355. Achnanthidium subtilissimum sp. nov. SEM views of rapheless valve. 352. External view of an entire rapheless valve. 353. Detail of the areolae on the external of the rapheless valve. 354. Internal view of an entire rapheless valve. 355. Internal areola openings with fine hymenate structures. Scale bars 1 μm (352, 354), 0.1 μm (353, 355).
FIGURES 356–404 in Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China
FIGURES 356–404. Kolbesia sichuanenis sp. nov. 356–378. LM of raphe valve. 379–402. LM of rapheless valve. 356, 379. Holotype. 403–404. SEM views of raphe valve. 403. External view of an entire raphe valve. 404. Internal view of an entire raphe valve. Scale bars 10 μm (356–402), 1 μm (403–404).
FIGURES 232–289 in Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China
FIGURES 232–289. Achnanthidium limosua sp. nov. 232–259. LM of raphe valve. 260–285. LM of rapheless valve. 242, 273. Holotype. 286–289. SEM views of raphe valve. 286. External view of an entire raphe valve. 287. Detail of the areolae on the external of the raphe valve. 288. Internal view of an entire raphe valve. 289. Internal areola openings with fine hymenate structures. Scale bars 10 μm (232– 285), 1 μm (286, 288), 0.1 μm (287, 289).
FIGURES 405–408 in Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China
FIGURES 405–408. Kolbesia sichuanenis sp. nov. SEM views of rapheless valve. 405. External view of an entire rapheless valve. 406. Internal view of an entire rapheless valve. 407. Detail of the areolae on the external of the rapheless valve. 408. Internal areola openings with fine hymenate structures. Scale bars 1 μm (405–406), 0.2 μm (407–408).
FIGURES 293–351 in Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China
FIGURES 293–351. Achnanthidium subtilissimum sp. nov. 293–318. LM of raphe valve. 319–347. LM of rapheless valve. 300, 328. Holotype. 348–351. SEM views of raphe valve. 348. External view of an entire raphe valve. 349. Detail of the areolae on the external of the raphe valve. 350. Internal view of an entire raphe valve. 351. Internal areola openings with fine hymenate structures. Scale bars 10 μm (293–347), 1 μm (348, 350), 0.1 μm (349, 351).
FIGURES 290–292 in Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China
FIGURES 290–292. Achnanthidium limosua sp. nov. SEM views of rapheless valve. 290. External view of an entire rapheless valve. 291. Detail of the areolae on the external of the rapheless valve. 292. Internal view of an entire rapheless valve. Scale bars 1 μm (290, 292), 0.1 μm (291).
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Allen Brain Atlas
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OpenNeuro
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