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66 results for “Pseudostaurosira”
FIGURES 217–221 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 217–221. Scanning electron micrographs of Gedaniella alfred-wegeneri (type material s0263, culture). Figs 217–218. External views, showing apically-elliptical areolae, occluded by branched vola (indicated by arrow), projecting from apical side of areola, and often two or multiple parallel volae per areola. Fig. 219. Internal view, showing the absence of rimoportulae. Fig. 220. Close up of external view, showing head APF composed by four vertical rows of pores located on mantle and elevating and thickening (indicated by arrow) of junction between valve face and mantle. Fig. 221. Close up of external view, showing foot APF constituted by five vertical row of two to four round pores, ornamented by wavy projections along vertical margin of pores.
FIGURES 13–20 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 13–20. Light micrographs, showing colonies and chloroplast information of living diatoms. Fig. 13. Gedaniella mutabilis. Fig. 14. Gedaniella panicellus. Fig. 15. Gedaniella paucistriata. Fig. 16. Nanofrustulum shiloi (SZCZE381, Paulilles, France). Fig. 17. Nanofrustulum shiloi (SZCZM404, Lumbarda, Croatia). Fig. 18. Nanofrustulum wachnickianum (SZCZCH193, Marquesas, USA). Fig. 19. Nanofrustulum wachnickianum (SZCZCH194, Marquesas, USA). Fig. 20. Nanofrustulum sp. 1. Scale bars, 10 µm.
FIGURES 39–129 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 39–129. Light micrographs, showing morphology of cleaned valves. Figs 39–41. Cratericulifera crinigera. Figs 42–59. Gedaniella boltonii, showing morphological variations within different populations. Figs 60–62. Gedaniella alfred-wegeneri. Figs 63–67. Gedaniella arenaria. Figs 68–80. Gedaniella flavovirens, showing morphological variations within different populations. Figs 81–87. Gedaniella mutabilis, showing morphological variations within different populations. Figs 88–89. Gedaniella panicellus. Figs 90–94. Gedaniella paucistriata. Figs 95–96. Nanofrustulum shiloi. Figs 97–98. Nanofrustulum wachnickianum. Figs 99–104. Opephora pacifica. Figs 105–107. Plagiostriata baltica. Figs 108–113. Pseudostaurosira elliptica, showing morphological variations within different populations. Figs 114–119. Pseudostaurosira madagascariensis. Figs 120–129. Serratifera andersonii, showing morphological variations within different populations. Figs 42–46, 58. Clone SZCZCH1528, from Kraalbaai, South Africa. Figs 47–48, 53, 59. Clone SZCZCH751, from Ponta Deldaga, Azores, Portugal. Figs 49–50. Clone SZCZP1101, from Kraalbaai, South Africa. Figs 51–52. Clone SZCZCH760, from Capelas, Azores, Portugal. Figs 54, 57. Clone SZCZP15, from Sandwich Harbour, Namibia. Figs 55–56. Clone SZCZP20, from Nuuk, Greenland. Figs 68–69. Clone SZCZCH1549, from Sopot, Baltic Sea, Poland. Figs 70–72. Clone SZCZCH1268, from Resko Lake, Baltic Sea, Poland. Figs 73–74. Clone SZCZCH1276, from Resko Lake, Baltic Sea, Poland. Figs 75–76. Clone SZCZM1465, from Aegean Sea, Turkey. Figs 77–78. Clone SZCZCH1282, from Dalian, Yellow Sea, China. Figs 79–80. Clone SZCZCH1351, from Dalian, Yellow Sea, China. Figs 81–85. Clone SZCZCH1381, from Resko Lake, Baltic sea, Poland. Figs 86–87. Clone SZCZCH153, from Gdansk, Baltic Sea, Poland. Figs 108–109. Clone SZCZCH1348, from Resko Lake, Baltic Sea, Poland. Figs 110–111. Clone s0398, from Miedzyzdroje, Baltic Sea, Poland. Figs 112–113. Clone SZCZCH1249, from Resko Lake, Baltic Sea, Poland. Figs 120–122. Clone SZCZCH1126, from Kraalbaai, South Africa. Figs 123–124. Clone SZCZP1059, from Langebaan Lagoon, South Africa. Figs 125–127. Clone SZCZP695, from Langebaan Lagoon, South Africa. Figs 128–129. Clone SZCZP1183, from Key West, Florida, USA. Scale bar, 10 µm.
FIGURE 3 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURE 3. The second part of the small-celled clade cut from the whole phylogenetic tree (Fig. S1). Taxa in bold are newly described species. Support values greater than 50 (ML) and 0.5 (BI) are shown at nodes.
FIGURES 263–268 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 263–268. Scanning electron micrographs of Gedaniella panicellus (type material SZCZCH1350, culture). Figs 263–264. External views, showing branched volae (indicated by arrow), originating from apical side of areolae. Figs 265–266. Internal views, showing the absence of rimoportulae and relatively large foot pole APF (indicated by arrow) and small head pole APF (indicated by arrowhead). Fig. 267. Plain copulae. Fig. 268. Numerous broken valves, showing relatively large foot APFs (indicated by arrowhead).
FIGURES 275–281 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 275–281. Scanning electron micrographs of Gedaniella paucistriata (type material SZCZCH1281, culture). Figs 275–276. External views, showing one areola on valve face and the presence of lateral projections (indicated by arrow) associated with the base of marginal spines. Fig. 277. Internal view, showing the absence of rimoportulae. Fig. 278. Close up of external view, showing the presence of small granules on the vimines (indicated by arrow). Fig. 279. Close up of external view, showing foot pole APF constituted by five observed vertical rows of pores, ornamented by small granules. Fig. 280. Close up of internal view, showing branched vola (indicated by arrow) projecting from apical side of areolae. Fig. 281. Girdle view of a frustule, showing open copulae (indicated by black arrow), fringed structure (indicated by arrowhead) at the margin of copula, and the presence of mantle plaques (indicated by white arrow).
FIGURES 253–258 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 253–258. Scanning electron micrographs of Gedaniella mutabilis (culture SZCZCH1381 and wild material). Figs 253–254. External views, showing apically rectangular areolae with round corners, branched volae (indicated by black arrow) with rods projecting from apical side of areolae, and the presence of small granules (indicated by white arrow) on the vimines. Figs 255–256. Internal views, showing the absence of rimoportulae. Fig. 257. Close up of girdle view, showing the presence of granules on the vimines of areolae on mantle and spatulate marginal spines. Fig. 258. Girdle view, showing open, plain copulae and the presence of mantle plaques (indicated by arrowhead). Figs 254–255. Wild material from Sopot, Baltic Sea, Poland.
FIGURES 199–204 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 199–204. Scanning electron micrographs of Gedaniella boltonii (other specimens, culture). Figs 199–202. External views, showing the shape of areolae changing from apically-elliptical to square with round corners. Fig. 203. Internal view, showing the absence of rimoportulae. Fig. 204. Girdle view, showing scale-like copulae.
FIGURES 228–234 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 228–234. Scanning electron micrographs of Gedaniella arenaria (wild material). Figs 228–230, 232. External views. Fig. 231. Girdle view, showing cingulum composed by four plain copulae. Figs 233–234. Internal views. Figs 228, 232–233. Material from Sandwich Harbor lagoon, Namibia. Figs 229, 231. Material from Tagus Estuary Natural Reserve, Portugal. Figs 230, 234. Material from Azores, Portugal.
FIGURES 33–38 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 33–38. Light micrographs, showing colonies and chloroplast information of living diatoms. Fig. 33. Serratifera parkii. Fig. 34. Serratifera punctata. Fig. 35. Serratifera rhombica. Fig. 36. Serratifera sourniae. Fig. 37. Serratifera takanoi. Fig. 38. Stauroforma rinceana. Scale bar in Fig. 35, 20 µm; all other scale bars, 10 µm.
FIGURES 211–216 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 211–216. Scanning electron micrographs of Gedaniella boltonii (Oval specimens, wild material). Figs 211–214. External views. Figs 215–216. Internal views. Figs 211–216. Material from Sandwich Harbor lagoon, Namibia.
FIGURES 191–198 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 191–198. Scanning electron micrographs of Gedaniella boltonii (type material SZCZCH1528, culture). Figs 191–192. External views, showing apically elliptical areolae, the presence of small granules located on the vimines (indicated by arrow) and branched volae (indicated by arrowhead), projecting from apical side of areolae. Fig. 193. Internal view, showing the absence of rimoportulae. Fig. 194. Oblique external view, showing two rows of areolae located on mantle. Fig. 195. Close up of external valve, showing foot pole APF ornamented by lateral projections (indicated by arrow). Fig. 196. Close up of internal valve, showing foot pole APF composed by four vertical rows of one to two round pores. Fig. 197. Oblique external valve, showing four rows of areolae on mantle and the presence of mantle plaques (indicated by arrow). Fig. 198. Girdle view, showing plain and open copulae (indicated by arrow).
FIGURES 21–32 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 21–32. Light micrographs, showing colonies and chloroplast information of living diatoms. Fig. 21. Opephora pacifica. Figs 22–27. Plagiostriata baltica. Fig. 28. Pseudostaurosira madagascariensis. Fig. 29. Serratifera andersonii. Fig. 30. Serratifera sp. (S. cf. andersonii). Fig. 31. Serratifera brevis. Fig. 32. Serratifera clavata. Scale bars, 10 µm.
FIGURES 184–190 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 184–190. Scanning electron micrographs of Cratericulifera crinigera (type material HK506, culture). Fig. 184. External view, showing crater-like (indicated by arrow) external opening of areolae. Fig. 185. Girdle view, showing one row of areola on valve mantle. Fig. 186. Internal view, showing the absence of rimoportulae. Fig. 187. Apical pore field, showing the depression (indicated by arrow) of apical pore field externally. Fig. 188. Internal apical pore field, composed by three round pores. Fig. 189. Girdle view, showing valvocopula perforated by two horizontal rows of poroids, upper one larger (indicated by arrowhead) and lower one smaller (indicated by arrow), and copulae as well bearing two horizontal rows of poroids, the size of which are similar (indicated by arrows). Fig. 190. External and internal valve views.
FIGURES 205–210 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 205–210. Scanning electron micrographs of Gedaniella boltonii (clavate to elliptical specimens, wild material). Figs 205–208. External views. Figs 209–210. Internal views. Figs 205–206, 209–210. Material from Sandwich Harbor lagoon, Namibia. Figs 207–208. Material from Kraalbaai, South Africa.
FIGURE 2 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURE 2. The first part of the small-celled clade cut from the whole phylogenetic tree (Fig. S1). Taxa in bold are newly described species. Support values greater than 50 (ML) and 0.5 (BI) are shown at nodes.
FIGURES 269–274 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 269–274. Scanning electron micrographs of Gedaniella panicellus (other specimens and wild material). Figs 269–270, 273. External views. Figs 271–272, 274. Internal views. Figs 273–274. Wild material from Sandwich harbor, Namibia.
FIGURES 222–227 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 222–227. Scanning electron micrographs of Gedaniella arenaria (type material s0393, culture), Fig. 222. External view, showing apically-elliptical areolae. Fig. 223. Close up of central part for the specimen in fig. 222, showing volae projecting from apical side of areola, and often two oppositely pointing volae per areola. Fig. 224. Internal view, showing the absence of rimoportulae. Fig. 225. Close up of central part of specimen in fig. 224, showing branched volae. Fig. 226. Girdle view, showing plain copulae and wider valvocopulae. Fig. 227. Complete frustules.
FIGURES 247–252 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira
FIGURES 247–252. Scanning electron micrographs of Gedaniella flavovirens (cultures), showing variations of the number of areolae on mantle and structure of the linking spines within different populations. Note the detail of linking spines in Figs 248 and 249; in Fig. 248, linking spines have simple expanded ends which anchor the two neighbouring cells, whereas in Fig. 249 the spines have serrated margins. In all populations the connecting spines have some form of lateral projection directed both above and below the plane of the valve face, in some cases even completely occluding the mantle areolae. Fig. 247. Clone SZCZCH1276, Resko Lake, Baltic Sea, Poland. Fig. 248. Clone SZCZCH1268, Resko Lake, Baltic Sea, Poland. Fig. 249. Clone SZCZM1465, Aegean Sea, Turkey. Fig. 250. Clone SZCZCH1277, Dalian, Yellow Sea, China. Fig. 251. Clone SZCZCH154, Gdansk, Baltic Sea, Poland. Fig. 252. Clone CCMP2653, Chile, South Pacific.
FIGURES 64–67 in Pseudostaurosira crateri sp. nov. (Fragilariaceae, Bacillariophyta), a new small araphid, fossil diatom species from the Pleistocene (Atlantic Forest, Brazil)
FIGURES 64–67. SEM micrographs of Pseudostaurosiropsis geocollegarum (Witkowski) E.Morales from Lac d'Yrieux, France (64) and Lake Edward, Democratic Republic of the Congo and Uganda (65–67). (64, 67) Valve view presenting details of sternum, apical pore fields, and striae composed of two rows of areolae. Notice the disc-like closing plates that occludes each areola (64, 66, 67). Detail on simple and bifurcate spines (65). Valve interior showing absence of rimoportulae. Notice the volae in the inner perimeter of the areolae (66). Girdle view showing open, plain, and ligulate copulae without perforations. Notice the mantle plaques.
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