3,805 research outputs found
Letter from Pat [Cummings] to Michi Weglyn, January 22, 1993
No full textA letter from Pat Cummings to Michi Weglyn about a story of Frank Chin's that they both think should be published. The author of the letter is probably children's book author and illustrator Pat Cummings.These materials are from box 73 and 74 of the Frank Chin Papers. The Frank Chin Papers contain personal and professional correspondence between Frank Chin and Michi Weglyn relating to particular projects on which either author was working as well as files related to the Day of Remembrance Tribute to Michi Weglyn
Letter from Pat Cummings to Eleanor Tellemac, April 6, 1992
No full textA letter from Pat Cummings to Eleanor Tellemac about plans to create a Multicultural Resource Center at HarperCollins publishing company.These materials are from box 73 and 74 of the Frank Chin Papers. The Frank Chin Papers contain personal and professional correspondence between Frank Chin and Michi Weglyn relating to particular projects on which either author was working as well as files related to the Day of Remembrance Tribute to Michi Weglyn
Monoportula P. A. Sims & D. M. Williams, nov. gen.
No full text<i>Monoportula</i> P.A.Sims & D.M.Williams nov. gen. <p> <b>Registration</b>: http://phycobank.org/103661</p> <p> Type species:— <i>Monoportula uralensis</i> (Strelnikova) P.A.Sims & D.M.Williams nov. comb.</p> <p>Frustules cylindrical, valve face circular, flat. Valve face bordered by expanded marginal ridge separating it from vertical mantle. Areolae poroid, on valve face arranged in interrupted radial and sub-radial rows extending from off-centre hyaline area from which a stout spine extends. Scattered spinules cover valve face disturbing areolar arrangement. Mantle areolae in vertical rows situated between hyaline marginal ridge and hyaline valve margin. Mantle areolae covered by network of anastomosing costae. Internally areolae sunk in rows between hyaline ribs, areolae becoming more numerous towards valve margin. One (1) rimoportula present, its external opening through stout tube expanded at its summit, internally as slit between raised lips.</p>Published as part of <i>Williams, 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., pp. 219-224 in Phytotaxa 595 (2)</i> on page 220, DOI: 10.11646/phytotaxa.595.2.8, <a href="http://zenodo.org/record/7905940">http://zenodo.org/record/7905940</a>
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
Kittonia kempii P. A. Sims & D. M. Williams 2022, sp. nov.
No full textKittonia kempii P.A.Sims & D.M.Williams sp. nov. (Figs 1–7) Type:— New Zealand, DSDP 275 1-2, 64- 5 cm, “Southeast Campbell Plateau, Position: 50°26.34’S; 176°18.99’E […] Late Cretaceous”, New Zealand; see Shipboard Scientific Party (1975) (holotype BM 101972!, one specimen = Figs 1, 2) Etymology:— Named for the late Klaus Kemp (1937–2022) who found and mounted the holotype specimen. Registration: http://phycobank.org/103337 Valve outline broadly oval with crenulated margin, two specimens found (Figs 1, 2, the holotype specimen, BM 101972; Figs 3–7, SEM miCrographs): 36 x 127μm (Figs 1, 2), 45 x 150μm (Figs 3–7). Valve faCe gently Convex with depressed central area, small hyaline valve centre lying within (Figs 5, 6). Well-developed marginal ridge separating valve from Crenulated mantle and margin, Ca. 7μm deep (Figs 4–6, arrows in Figs 5, 6). On valve faCe, towards pole, large hyaline area, stout tubular process with flattened summit at centre, angled towards valve margin, but not beyond it (second process presumed missing due to break in valve, Figs 1, 4). Ocellus-like structure on surface of subtriangular summit, Ca. 7.5μm wide with radial rows of five poroids surrounding hyaline margin (Figs 1–5, 7). Areolae poroid arranged in rows radiating from valve Centre, Ca. 7 areolae in 10μm, 7 rows in 10μm (Figs 1, 3–6). Areolae on valve face with raised rims and occluded by elaborate cribra (Figs 1, 3–6). Mantle areolae in mostly vertical rows, cribra lying flush with valve surface (Figs 5, 6). Only two specimens have been found, both lack a significant part of the central area where the rimoportulae would normally have been situated.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 276, DOI: 10.11646/phytotaxa.573.2.7, http://zenodo.org/record/734998
Stictodiscus manilensis D. M. Williams, P. A. Sims, & J. Witkowski 2021, sp. nov.
No full text<i>Stictodiscus manilensis</i> D.M.Williams, P.A.Sims, & J.Witkowski, <i>sp. nov.</i> <p> <b>Type:—</b> Philippines: Manila (‘ Manilla’), (holotype BM Adams F 1148 = Fig. 1, one specimen); BM 5473 (Deby, one specimen), BM 7431 (Deby, one specimen), BM 8865 (Deby, ‘ Manilla’ = Fig. 3, one specimen), BM 10652 (Deby, L.H. 826, two specimens), BM 45641 (Sturt, A578, three specimens), BM 45863 (Sturt A800, one specimen). Singapore: BM 10435 (Deby, L.H. 547, one specimen).</p> <p>Valves circular with flat valve face; mantle distinctive. Valve with small central annulus, radiating network of ‘siliceous bars’ leading to areolae, mostly biseriate. Raised siliceous thickenings surround series of radiating inner areolae, becoming more conspicuous towards valve mantle. No other surface structures.</p>Published as part of <i>Williams, David M., Sims, Pat A. & Witkowski, Jakub, 2021, Notes on the diatom collection of the Natural History Museum, London (BM) V: (a) ' Stictodiscus manillensis' nom. nud., (b) Stictodiscus pantocsekii and ' Stictodiscus pantocsekii var. minor', (c) a note on the name ' Stictodiscella'; and (d) some comments on Jósef Pantocsek's Beiträge zur Kenntnis der Fossilen Bacillarien, pp. 167-174 in Phytotaxa 507 (2)</i> on page 169, DOI: 10.11646/phytotaxa.507.2.4, <a href="http://zenodo.org/record/5425611">http://zenodo.org/record/5425611</a>
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 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 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
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