Taxon Account

Diatoma Bory; 1824; 461

Key references

Williams D.M. 1985. Morphology, Taxonomy and Inter-Relationships of the Ribbed Araphid Diatoms from the Genera Diatoma and Meridion (Diatomaceae: Bacillariophyta). Bibliotheca Diatomologica Vol. 8, J. Cramer, Vaduz. 228 pp.; 27 pls.

Morphology

Cells isovalvar, isopolar and bilaterally symmetrical.

Valves are elliptical to elongate in valve view, quadrate or rectangular in girdle view with broadly rounded, subrostrate, rostrate or capitate poles.

Cells joined either at the valve face to form ribbon-like colonies, or at one corner to form zig-zag or stellate colonies.

Striae are fine, uniseriate with small, round areolae; striae parallel and sometimes radiate towards poles.

Internally prominent transapical ribs extend from the sternum to the mantle.

Narrow axial area without central area.

Apical pore field present and a single, transapically orientated rimoportula close to the pore field.

Girdle bands with rows of pores.

Many small discoid, rod-like, or plate-like plastids.

Literature

References are given in chronological order.

Reference
Citation
Kociolek J.P., Lowe R.L. 1983. Scanning electron microscopic observations on the frustular morphology and filamentous growth habit of Diatoma hiemale var. mesodon. BioScience. 33(10): 655-656. Morphology; Illustrations
Williams D.M. 1985. Morphology, Taxonomy and Inter-Relationships of the Ribbed Araphid Diatoms from the Genera Diatoma and Meridion (Diatomaceae: Bacillariophyta). Bibliotheca Diatomologica Vol. 8, J. Cramer, Vaduz. 228 pp.; 27 pls. Morphology; Taxonomy;
Williams D.M. 1990. Distrionella D.M. Williams, nov. gen., a new araphid diatom (Bacillariophyta) genus closely related to Diatoma Bory. Archiv für Protistenkunde. 138: 171-177.
Williams D.M. 1990. Cladistic analysis of some freshwater araphid diatoms (Bacillariophyta) with particular reference to Diatoma and Meridion. Plant Systematics and Evolution. 171: 89-97. Biology
Lange-Bertalot H., Rumrich U., Hofmann G. 1991. Zur Revision der Gattung Diatoma Bory (Subgenus Diatoma, Bacillariophyceae) Identifikation ökologisch wichtiger, aber taxonomisch problematischer Arten. Acta Biol. Benrodis. 3: 115-130. Morphology; Taxonomy; Illustrations
Blanco S., Williams D.M. 2015. Corrections to the nomenclature of genus Diatoma (Bacillariophyta: Fragilariaceae). Phytotaxa. 202(3): 225-227. Taxonomy

Similar Species

Similar species not published on this website:

Distrionella Williams; 1990

This page should be cited as:

Mann D. G., Kelly M., Jüttner I. Diatoma Bory; 1824; 461. In: Jüttner I., Carter C., Chudaev D., 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.. Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=3707. [Accessed:  ].

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Record last modified: 13/04/2021