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66 results for “Pseudostaurosira”
FIGURES 472–477 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 472–477. Scanning electron micrographs of Opephoroid sp. (culture s0403 and s0402). Fig. 472. A frustule, showing lanceolate valve with widely central sternum and two rows of areolae on valve face. Fig. 473. Close up of a valve, showing apical pore field ornamented with projections (indicated by white arrow) and areolae occluded by branched volae (indicated by black arrow). Figs 474–475. Girdle views of frustules, showing marginal spines with serrated margin (indicated by white arrow) and globular base with an extending lateral projection (indicated by black arrow) associated with spines. Figs 476–477. Smaller cells, showing elliptical valves with numerous plain copulae.
FIGURES 360–367 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 360–367. Scanning electron micrographs of Serratifera andersonii (type material SZCZCH1126 and wild material). Figs 360–363. External views, showing one transapically-elongated areola on both valve face and mantle and complex volae (indicated by arrowheads) originating from transapical sides of areolae. Figs 364–365. Internal views, showing the absence of rimoportulae. Fig. 366. Girdle view of a whole frustule, showing spatulate marginal spines and plain, open copulae. Fig. 367. Close up of specimen in fig. 366, showing fringed structure (indicated by arrowhead) observed at the margin of copula. Figs 361, 363–364. Wild material from Sandwich Harbor lagoon in Namibia. Fig. 362. Wild material from Kraalbaai, South Africa.
FIGURES 330–340 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 330–340. Scanning electron micrographs of Plagiostriata baltica (type material SZCZCH1550, culture). Fig. 330. External view, showing linear valve with indistinct central sternum. Figs 331, 333. Internal views, showing the presence of simple rimoportulae (indicated by arrows). Fig. 332. Internal view, showing the absence of rimoportulae. Figs 334–335. Close up of external APFs, composed by one or two pores. Fig. 336. Close up of internal APF, composed by two pores (indicated by arrow). Fig. 337. Close up of middle part of specimen in fig. 333, showing simple rimoportula. Fig. 338. Close up of middle part of a valve, showing the absence of rimoportula. Fig. 339. Close up of centre part of a valve, showing slit-like external opening (indicated by arrow) of a rimoportula. Fig. 340. A tilted frustule, showing numerous and plain copulae.
FIGURES 324–329 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 324–329. Scanning electron micrographs of Opephora pacifica (ECT3831, culture). Figs 324–325. External views, showing clavate valves with each stria composed by single elongated areola extending from valve face to mantle continuously and head APFs ornamented with granules (indicated by arrow). Figs 326–327. Internal views, showing the absence of rimoportulae and foot pole APFs composed by up to five observed vertical rows of pores (indicated by arrows). Fig. 328. Girdle view, showing plain and open valvocopulae (indicated by arrow). Fig. 329. Girdle view, showing numerous, open and plain copulae.
FIGURES 318–323 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 318–323. Scanning electron micrographs of Nanofrustulum sp. 2, Lurio, Mozambique. Figs 318–319. External views, showing narrowly-linear sternum. Fig. 320. Internal and external views, showing branched lateral projection (indicated by arrowhead) on valve face. Fig. 321. Internal view, showing the absence of rimoportulae and APFs composed by one pore (indicated by arrowheads). Figs 322–323. Girdle views, showing plain copulae (indicated by arrow) and lateral projections (indicated by arrowhead) associated with marginal spines.
FIGURES 312–317 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 312–317. Scanning electron micrographs of Nanofrustulum sp. 1, Florida, USA. Fig. 312. External view, showing narrowly-linear sternum, variable number of areolae on valve face (from two to four). Fig. 313. External view, showing the presence of warts on the central sternum (indicated by arrowhead). Fig. 314. Internal view, showing the absence of rimoportulae and single pore APFs (indicated by arrows). Fig. 315. Girdle view, showing elongate marginal spines with serrated margin, and with lateral projections (indicated by arrow) associated with the base of spines and other projections (indicated by arrowhead) originating from opposite side of areolae beneath marginal spines. Fig. 316. Segmented copulae. Fig. 317. Open copulae.
FIGURES 306–311 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 306–311. Scanning electron micrographs of Nanofrustulum wachnickianum (other specimens, culture). Figs 306–308. External views, showing widely lanceolate sternum and the presence of warts (indicated by arrow) on valve face. Fig. 309. Internal view, showing branched volae and the absence of rimoportulae. Fig. 310. Girdle view, showing plain copulae. Fig. 311. Girdle view, showing fringed structures (indicated by arrowhead) observed at the margin of copula, and the presence of mantle plaques (indicated by arrow).
FIGURES 300–305 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 300–305. Scanning electron micrographs of Nanofrustulum wachnickianum (type material SZCZCH285, culture). Fig. 300. External view, showing circular valve with widely-lanceolate sternum and radiating areolae towards to valve mantle. Fig. 301. Internal view, showing the absence of rimoportulae. Fig. 302. Girdle view, showing spatulate marginal spines with serrated margin and lateral projections (indicated by white arrowhead) associated with the base and other projections (indicated by black arrowhead) projecting from opposite side of areolae beneath marginal spines. Fig. 303. Oblique valves, showing warts (indicated by arrow) observed on valve face. Fig. 304. Open copula (indicated by arrowhead). Fig. 305. Girdle view, showing much wider valvocopula, plain and open copulae, and fringed structure (indicated by arrowhead) observed at the margin of copulae.
FIGURES 413–419 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 413–419. Scanning electron micrographs of Serratifera nosybeana (culture SZCZCH992 and wild material). Figs 413–415. External views, showing narrowly-linear sternum and each stria composed by one (sometimes two) areolae on valve face and one areola on mantle. Figs 416–417. Incomplete external valve views, showing lateral projections (indicated by arrowheads) associated with the base of marginal spines and extending towards to mantle. Fig. 418. Internal view, showing the absence of rimoportulae. Fig. 419. Plain and open copulae. Fig. 416. Wild material from the coast of Nosy Be Island, Madagascar.
FIGURES 425–430 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 425–430. Scanning electron micrographs of Serratifera punctata (culture s0386). Fig. 425. External view, showing narrowly-linear sternum and each stria composed of a single slightly-elliptical areola on both valve face and mantle. Fig. 426. Internal view, showing the absence of rimoportulae. Fig. 427. Close up of a valve, showing foot APF composed by four observed vertical rows of pores. Fig. 428. Close up of a valve, showing head APF ornamented by few particles. Fig. 429. Close up of central part of a specimen, showing 2–3 granules (indicated by arrow) aggregated around the base of marginal spines and complex volae projecting from transapical side of areolae. Fig. 430. Girdle view, showing plain, open copulae, and the presence of mantle plaques (indicated by arrow).
FIGURES 385–392 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 385–392. Scanning electron micrographs of Serratifera brevis (culture HK446 and wild material). Figs 385, 388. External views, showing narrowly-linear sternum, and each stria consisted of single slightly-elliptical areola on both valve face and mantle. Fig. 386. A whole frustule, showing elongated spatulate marginal spines with bifurcated tips on top. Fig. 387. A smaller external valve, showing extensively transapically elongate areolae on valve face. Fig. 389. Internal view, showing the absence of rimoportulae. Fig. 390. Girdle view, showing open (indicated by white arrowhead) and plain copulae, and the presence of mantle plaques (indicated by black arrowhead). Fig. 391. Close up of marginal spine of a specimen, showing few small granules (indicated by arrowhead) aggregated near the base of spines. Fig. 392. Close up of copulae of a specimen, showing fringed structure (indicated by arrowhead) observed at the margin of copula. Fig. 388. Wild material from the coast of Nosy Be Island, Madagascar.
FIGURES 296–299 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 296–299. Scanning electron micrographs of open (indicated by arrow) or segmented copulae of Nanofrustulum shiloi within different populations. Fig. 296. Clone SZCZM562, Lumbarda Beach, Croatia. Fig. 297. Clone SZCZCH196, Marquesas, Florida, USA. Fig. 298. Clone SZCZM633, Lumbarda, Croatia. Fig. 299. Clone SZCZM540, Lumbarda, Croatia.
FIGURES 286–289 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 286–289. Scanning electron micrographs of Nanofrustulum shiloi within different populations. Fig. 286. Clone SZCZE381, Paulilles, Mediterranean Sea, showing presence of projections (indicated by white arrow) above the areolae and one pore apical pore fields (indicated by arrowheads). Fig. 287. Clone SZCZM540, Lumbarda, Croatia, showing presence of branched projections (indicated by arrow) above the areolae. Fig. 288. Clone SZCZM404, Lumbarda, Croatia, showing the presence of warts (indicated by arrow) on valve face and lateral projection (indicated by arrowhead) associated with the base of marginal spines. Fig. 289. Clone SZCZM404, showing the absence of rimoportulae.
FIGURES 290–295 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 290–295. Scanning electron micrographs of copulae of Nanofrustulum shiloi within different populations. These show segmented copulae (indicated by white arrowheads) and open copulae (indicated by black arrowheads). Figs 290–291, 294–295. Clone SZCZM115, Lumbarda, Croatia. Fig. 292. Clone SZCZM540, Lumbarda, Croatia. Fig. 293. Clone SZCZCH196, Marquesas, Florida, USA.
FIGURES 282–285 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 282–285. Scanning electron micrographs of Nanofrustulum shiloi (CCMP1306, culture). Fig. 282. External view, showing circular valve shape with warts (indicated by black arrowhead) observed on the vimines or on central sternum, the presence of lateral projections (indicated by arrow) near the base of marginal spines and some smaller projections (indicated by white arrowhead) originating from opposite side of areola beneath spines. Fig. 283. Internal view, showing the absence of rimoportulae, branched volae (indicated by white arrowheads) and APFs consisting of one pore (indicated by black arrowheads). Fig. 284. An external valve and incomplete girdle view, showing the presence of warts on the vimines and the presence of mantle plaques (indicated by arrow). Fig. 285. Girdle view, showing scale-like copulae (indicated by arrow).
FIGURES 130–183 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 130–183. Light micrographs, showing morphology of cleaned valves. Figs 130–137. Serratifera sp. (S. cf. andersonii), showing morphological variations within different populations. Figs 138–142. Serratifera brevis. Figs 143–147. Serratifera clavata. Figs 148–151. Serratifera corallina. Figs 152–156. Serratifera namibica. Figs 157–160. Serratifera nosybeana. Figs 161–165. Serratifera parkii. Figs 166–168. Serratifera punctata. Figs 169–171. Serratifera rhombica. Figs 172–175. Serratifera sourniae. Fig. 176. Serratifera takanoi. Figs 177–178. Serratifera sp. 2. Figs 179–183. Stauroforma rinceana. Figs 130–131. Clone SZCZM910, from Lokrum, Croatia. Figs 132–134. Clone SZCZP693, from Sea of Marmara, Turkey. Figs 135–137. Clone SZCZP696, from San Sebastian Beach, Canary Islands. Scale bar, 10 µm.
FIGURES 259–262 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 259–262. Scanning electron micrographs of Gedaniella mutabilis (culture SZCZCH153 and wild material). Figs 259–260. External views, showing apically-rectangular areolae with round corners and foot pole APF consisted of five observed vertical rows of pores ornamented externally by wavy projections (indicated by arrow). Fig. 261. Girdle view, showing four rows of areolae located on mantle and the presence of small granules (indicated by arrow) on the vimines. Fig. 262. Girdle view, indicating five observed plain copulae. Fig. 260. Wild material from Sopot, Baltic Sea, Poland.
FIGURES 241–246 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 241–246. Scanning electron micrographs of Gedaniella flavovirens (other specimens, cultures), showing variations of valve shape within different populations. Figs 241–242, 244–246. External views. Fig. 243. Internal view. Fig. 241. Clone SZCZCH1268, from Resko lake, Baltic Sea, Poland. Fig. 242. Clone SZCZM1465, from Aegean Sea, Turkey. Fig. 243. Clone SZCZCH1276, from Resko Lake, Baltic Sea, Poland. Fig. 244. Clone SZCZCH1264, from Dalian, Yellow Sea, China. Fig. 245. Clone SZCZCH1484, from Yantai, Yellow Sea, China. Fig. 246. Clone SZCZCH1351, from Dalian, Yellow Sea, China.
FIGURES 4–12 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 4–12. Light micrographs, showing colonies and chloroplast information of living diatoms. Fig. 4. Cratericulifera crinigera. Fig. 5. Gedaniella boltonii (SZCZCH1528, Kraalbaai, South Africa). Fig. 6. Gedaniella boltonii (SZCZP15, Sandwich Harbour, Namibia). Fig. 7. Gedaniella boltonii (SZCZP20, Nuuk, Greenland). Fig. 8. Gedaniella alfred-wegeneri. Fig. 9. Gedaniella arenaria. Fig. 10. Gedaniella flavovirens (SZCZCH1549, Baltic Sea, Poland). Fig. 11. Gedaniella flavovirens (SZCZCH1276, Baltic Sea, Poland). Fig. 12. Gedaniella flavovirens (SZCZCH1351, Yellow Sea, China). Scale bars, 10 µm.
FIGURES 235–240 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 235–240. Scanning electron micrographs of Gedaniella flavovirens (SZCZCH1549, culture). Figs 235–236. External views, showing slightly transapically-elliptical or roundish areolae. Fig. 237. Internal view, showing the absence of rimoportulae. Fig. 238. Close up of external view, showing APFs composed by nine observed vertical rows of pores, located on mantle. Fig. 239. Close up of internal view, showing branched volae (indicated by arrow) projecting from apical side or transapical side of areolae. Fig. 240. Girdle view, showing numerous plain copulae and branched marginal spines with lateral projections (indicated by arrow) associated with the base.
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