Nitzschia ligowskii Witkowski, -Bertalot, Kociolek & Brzezinska 2004
Nitzschia ligowskii Witkowski, Lange-Bertalot, Kociolek & Brzezinska 2004: 584-586, figs 26-81
Published in: Witkowski, A., Lange-Bertalot, H., Kociolek, J.P., Ruppel, M., Wawrzyniak-Wydrowska, B., Bąk, M. & Brzezinska, A. (2004). Four new species of Nitzschia sect. Tryblionella (Bacillariophyceae) resembling N. parvula. Phycologia 43: 579-595, 93 figs, 4 tables.
Publication date: 30th September, 2004
Status of name
This name is of an entity that is currently accepted taxonomically.
Type locality: Victoria Docks in Hull (UK) (Witkowski & al., 2004: 584). Holotype: (Witkowski & al., 2004: 584). Notes: Holotype: Slide 2788 in Herbar Grunow (AWH); deposited in Dr Henri van Heurck Museum in Antwerp (Belgium). Witkowski et al. (2004) note that the type preparation was found in Dr Henri Van Heurck Museum in Antwerp, Belgium, in a paper package bearing the note 'Nitzschia subconstricta Grunow'. This name has never been validly published. They also note that the sample was supposedly collected by R. Hennedy in 1858; it was passed either to A. Grunow or H. Van Heurck by Prof. G. Walker-Arnott from Glasgow.
Nitzschia subconstricta Grunow 1987
Psammodictyon subconstrictum (Grunow) Louvrou & Economou-Amilli 2012
This is a marine species.
Valves nearly linear, slightly panduriform, with cuneate apices, 10-57 µm long, 5-9 µm wide. The valve surface of N. ligowskii is distinctly undulate, bearing a keeled raphe on one side and a very shallow mantle on the opposite side. Raphe strongly eccentric; the external apical endings are abruptly deflected. The fibulae are distinct, 12-15 in 10 µm, broad and plain, and the median two are father apart than the others. Transapical striae are present in the marginal part of the valve, finely punctate, 22-27 in 10 µm; they are composed of round poroids of variable size. The striae adjacent to the distal margin are usually composed of several poroids, whereas on the opposite side, on the proximal mantle, there is a single row of relatively large areolae. The stria-forming areolae are elliptical externally but slit-like internally. A very broad sternum interrupts the striae and all striae continue on the sternum surface as hyaline depressions separated by ridges and warts
Marine and brackish waters worldwide
Witon, E. & Witkowski, A. (2006). Holocene diatoms (Bacillariophyceae) from Faeroe Islands Fjords, Northern Atlantic Ocean. II. Distribution and taxonomy of marine taxa with special reference to benthic forms. Diatom Research 21(1): 175-215.
Created: 16 November 2004 by Sandy Lawson
Verified by: 04 July 2016 by G.M. Guiry
Accesses: This record has been accessed by users 574 times since it was created.
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Cite this record as:
G.M. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 24 September 2021.