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Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta)
No full textWilliams, David M., Sims, Pat A. (2023): Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta). Phytotaxa 589 (3): 213-229, DOI: 10.11646/phytotaxa.589.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.589.3.
FIGURES 31–33 in Description of the new species Kittonia kempii (Biddulphiales: Kittoniaceae) with comments on Kittonia hannai P. Lefébure & Chenevière and Kittonia gigantea (Greville) De Toni
No full textFIGURES 31–33: Reproduction of illustrations in Brigger & Hanna of Kittonia gigantea (Brigger & Hanna 1965, figs 6, 7 and 17 = Figs 31–33, respectively)Published as part of Sims, Pat A. & Williams, David M., 2022, Description of the new species Kittonia kempii (Biddulphiales: Kittoniaceae) with comments on Kittonia hannai P. Lefébure & Chenevière and Kittonia gigantea (Greville) De Toni, pp. 275-285 in Phytotaxa 573 (2) on page 282, DOI: 10.11646/phytotaxa.573.2.7, http://zenodo.org/record/734998
Notes on the rare Cretaceous species Syndetocystis uralensis Strelnikova leading to the description of a new monotypic genus Monoportula P.A.Sims et D.M.Williams nov. gen.
No full textWilliams, David M., Sims, Pat A., Witkowski, Jakub (2023): Notes on the rare Cretaceous species Syndetocystis uralensis Strelnikova leading to the description of a new monotypic genus Monoportula P.A.Sims et D.M.Williams nov. gen. Phytotaxa 595 (2): 219-224, DOI: 10.11646/phytotaxa.595.2.8, URL: http://dx.doi.org/10.11646/phytotaxa.595.2.
FIGURES 9–15 in Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta)
No full textFIGURES 9–15. Pyrgodiscus armatus Kitton ex Cleve LM. 9, 10. BM 7333, d= 78 µm; cd = 26 µm; sp = 29 µm. 11, 12. BM 7334, d= 72 µm; sp = 30 µm. 13–15. BM 7334, d= 73 µm; cd = 28 µm; sp = 32 µm. Scale bars = 10 µm (Figs 9–12), 20 µm (Figs 13–15).Published as part of Williams, David M. & Sims, Pat A., 2023, Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta), pp. 213-229 in Phytotaxa 589 (3) on page 219, DOI: 10.11646/phytotaxa.589.3.1, http://zenodo.org/record/777694
FIGURES 34, 5. Pyrgodiscus kinkeri Pantocsek. 34. Reproduced from Pantocsek 1905 in Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta)
No full textFIGURES 34, 5. Pyrgodiscus kinkeri Pantocsek. 34. Reproduced from Pantocsek 1905: pl. 34, fig. 486. 35. Specimen from BM Adams L22, "F̧r Jutland", d = 50 µm. Scale bar = 10 µm (Fig. 35).Published as part of Williams, David M. & Sims, Pat A., 2023, Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta), pp. 213-229 in Phytotaxa 589 (3) on page 222, DOI: 10.11646/phytotaxa.589.3.1, http://zenodo.org/record/777694
FIGURES 15–18 in The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution
No full textFIGURES 15–18: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and 'pegs' (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17).Published as part of Williams, David M. & Sims, Pat A., 2023, The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution, pp. 209-219 in Phytotaxa 591 (3) on page 212, DOI: 10.11646/phytotaxa.591.3.3, http://zenodo.org/record/780083
FIGURES 24–33. Pyrgodiscus simplex Witt. 24. Reproduced from Witt 1885 in Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta)
No full textFIGURES 24–33. Pyrgodiscus simplex Witt. 24. Reproduced from Witt 1885: 30, pl. VI, fig. 6. 25. Reproduced from Schmidt 1886: pl. 100, fig. 13. 26–29. BM 64641 eX Barker 185, d = 54 μm, cdw = 34 μm; 30–33. BM 65879 eX FergUsOn, d = 44 μm, cdw = 31 μm. Scale bars = 5 µm (Figs 26–29), 10 µm (Figs 27–33).Published as part of Williams, David M. & Sims, Pat A., 2023, Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta), pp. 213-229 in Phytotaxa 589 (3) on page 221, DOI: 10.11646/phytotaxa.589.3.1, http://zenodo.org/record/777694
FIGURES 16–23 in Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta)
No full textFIGURES 16–23. Pyrgodiscus armatus Kitton ex Cleve. 16–18. BM 57612, Wynne Baxter 2985, Kitton, d= 70 µm; cd = 33 µm. 19, 20. BM Adams J3765, Alfredo Truan, Sep [18]86), d= 78 µm; sp = 19 µm. 21–23. BM 46164, Sturt A1101, Kitton, d= 70 µm; cd = 28 µm; sp = 29 µm. Scale bars = 5 µm (Figs 16–18), 10 µm (Figs 19–23).Published as part of Williams, David M. & Sims, Pat A., 2023, Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta), pp. 213-229 in Phytotaxa 589 (3) on page 220, DOI: 10.11646/phytotaxa.589.3.1, http://zenodo.org/record/777694
FIGURES 1–8 in Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta)
No full textFIGURES 1–8. Pyrgodiscus armatus Kitton ex Cleve. 1, 4. Reproduction from Cleve 1885: pl. 13, fig. 13a–b. 2, 5. Reproduced from Witt 1885: 30, pl. VI, figs 7, 8. 3, 6. Reproduction from Schmidt 1886: pl. 92, figs 15, 16. 7, 8. LM of Pyrgodiscus armatus: BM 46649, Sturt A1588, d= 85 µm; cdw = 43 µm; sp = 29µm. Scale bar = 10 µm (Figs 7, 8).Published as part of Williams, David M. & Sims, Pat A., 2023, Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta), pp. 213-229 in Phytotaxa 589 (3) on page 215, DOI: 10.11646/phytotaxa.589.3.1, http://zenodo.org/record/777694
FIGURES 36–40 in Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta)
No full textFIGURES 36–40. Stephanogonia sp. SEM (All from "Japan 2019"). 36, 37. Whole valve to show spines at the top of the pillar linking with the remaining part of the valve. 38. Reproduced from Pantocsek 1889: pl. 9, fig. 161, "Szakal", Hungary, of Stephanogonia cincta. 39, 40. Detail Of the spine strUctUre (Fig. 39) and central part Of pillar (Fig. 40). Scale bars = 15 μm (Figs 36–7), 6 μm (Figs 39–40).Published as part of Williams, David M. & Sims, Pat A., 2023, Notes on the diatom collection of the Natural History Museum, London (BM) VII: An account of some original specimens of Pyrgodiscus (Bacillariophyta) with notes on Stephanogonia (Bacillariophyta), pp. 213-229 in Phytotaxa 589 (3) on page 223, DOI: 10.11646/phytotaxa.589.3.1, http://zenodo.org/record/777694
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