Taxon Account

Brachysira wygaschii Lange-Bertalot; 1994; 72

Key references

Lange-Bertalot H., Moser G. 1994. Brachysira. Monographie der Gattung. 29. J. Cramer, Berlin. 212 pp

Morphology

Size
30-65 µm long, 7-12 µm wide (Lange-Bertalot & Moser 1994).

Shape
Valves lanceolate with cuneate apices.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Uniseriate, radiate, 20-24 in 10 µm (Lange-Bertalot & Moser 1994), transapically elongated areolae are visible in LM.

Axial area
Narrow, linear, widening slightly close to the central area.

Central area
Rhombic, 1/3-1/2 of the valve width.

Raphe
Straight, filiform with small proximal raphe ends.


SEM morphology
Valve surface smooth.

A ridge on either side of the raphe and along the valve margin.


Literature

References are given in chronological order.

Reference
Citation
Lange-Bertalot H., Moser G. 1994. Brachysira. Monographie der Gattung. 29. J. Cramer, Berlin. 212 pp Morphology; Taxonomy; Description; Type Illustration;
Hofmann G., Werum M., Lange-Bertalot H. 2011. Diatomeen im Süßwasser-Benthos von Mitteleuropa. A.R.G. Gantner, Ruggell. 908 pp Morphology; Illustrations

Similar Species

Similar species not published on this website:

This page should be cited as:

Jüttner I. Brachysira wygaschii Lange-Bertalot; 1994; 72. In: Jüttner I., Bennion H., Carter C., Cox E.J., Ector L., Flower R., Jones V., Kelly M.G., Mann D.G., Sayer C., Turner J. A., Williams D.M.. Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=4563. [Accessed:  ].

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Record last modified: 27/12/2020