Taxon Account

Brachysira zellensis (Grunow) Round & Mann; 1981; 227

Key references

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

Morphology

Shape
Valves linear to linear-rhombic with rounded or cuneate ends, valve margins can be undulate in larger and medium-sized cells.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Uniseriate, radiate, transapically elongated areolae are visible in LM.

Axial area
Variable in width bordered by striae of varying length due to irregularly spaced areolae.

Central area
Circular and variable in size, it can extend to the valve margins.

Raphe
Straight, filiform, proximal endings appear expanded in LM.


SEM morphology
Small protrusions on the virgae.

Literature

References are given in chronological order.

Reference
Citation
Grunow A. 1860. Über neue oder ungenügend gekannte Algen. Erste Folge, Diatomeen, Familie Naviculaceen. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien. 10: 503-582; pls. 3-7.
Round F.E., Mann D.G. 1981. The diatom genus Brachysira. I. Typification and separation from Anomoeoneis. Archiv für Protistenkunde. 124: 221-231. Taxonomy
Lange-Bertalot H., Moser G. 1994. Brachysira. Monographie der Gattung. 29. J. Cramer, Berlin. 212 pp Morphology; Illustrations;
This page should be cited as:

Mann D. G., Jüttner I. Brachysira zellensis (Grunow) Round & Mann; 1981; 227. 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=4538. [Accessed:  ].

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Record last modified: 27/12/2020