Simonsenia delognei (Grunow) Lange-Bertalot; 1979; 132

Key references

Witkowski A., Żelazna-Wieczorek J., Solak C.N., Kulikovskiy M. 2014. Morphology, ecology and distribution of the diatom (Bacillariophyceae) species Simonsenia delognei (Grunow) Lange-Bertalot. Oceanological and Hydrobiological Studies. 43(4): 393-401.

Morphology

Shape
Valves lanceolate with small rostrate or subcapitate ends.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Parallel, dot-like marks are visible at the valve margins, which are the spaces between the fibulae.

Raphe
The raphes of the two valves lie on opposite sides ('nitzschioid symmetry').

SEM morphology
Striae biseriate, becoming multiseriate towards the raphe.

Literature

References are given in chronological order.

Reference	Citation
Lange-Bertalot H. 1979. Simonsenia, a new genus with morphology intermediate between Nitzschia and Surirella. Bacillaria. 2: 127-136.	Morphology; Taxonomy; Description
Belcher J.H., Swale E.M.F. 1981. Records of Simonsenia delognei and some interesting species of Navicula (diatoms) from English rivers, mainly near Cambridge. Microscopy. 34: 201-206.	Morphology; Illustrations
Taylor J.C., Harding W.R., Archibald C.G.M. 2007. An illustrated guide to some common diatom species from South Africa. Water Research Commission, WRC Report TT 282/07. 12 pp; 178 pl.	Morphology; Ecology; Illustrations
Witkowski A., Żelazna-Wieczorek J., Solak C.N., Kulikovskiy M. 2014. Morphology, ecology and distribution of the diatom (Bacillariophyceae) species Simonsenia delognei (Grunow) Lange-Bertalot. Oceanological and Hydrobiological Studies. 43(4): 393-401.	Illustrations; Morphology; Ecology

This page should be cited as:

Jüttner I. Simonsenia delognei (Grunow) Lange-Bertalot; 1979; 132. In: Jüttner I., Carter C., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M. 2025 . Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=2792. [Accessed: 3 April 2025].

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Record last modified: 27/12/2020