Taxon Account

Cymbella tumida (Brébisson) Van Heurck; 1880; pl.2, fig.10

Key references

Krammer K. 2002. Cymbella. Lange-Bertalot H. (ed), Diatoms of Europe, Diatoms of the European Inland Waters and Comparable Habitats, Vol.3, A.R.G. Gantner Verlag K.G., Ruggell. 584 pp

Ector L., Wetzel C.E., Novais M.H., Guillard D. 2015. Atlas des diatomées des rivières des Pays de la Loire et de la Bretagne. DREAL Pays de la Loire, Nantes. 649 pp

Morphology

Size
33-95 µm long, 14.5-22 µm wide (Lange-Bertalot et al. 2017, Reichardt 2018).

Shape
Valves with strongly convex dorsal margin, tapering abruptly near valve ends; ventral margin more or less straight with slightly tumid central section. Valve ends broadly rounded, protracted, rostrate.

Symmetry
Dorsiventral, isopolar.

Striae
Striae radiate and often curved, 8-11 in 10 µm in valve centre, areolae visible in LM, 14-19 in 10 µm (Lange-Bertalot et al. 2017).

Axial area
Narrow, linear, approximately in centre of valve.

Central area
Round or rhombic, approximately 1/3-1/2 of valve width.

Raphe
Raphe slightly lateral becoming filiform near proximal and distal ends, proximal ends expanded, drop-shaped, slightly ventrally deflected, dorsally deflected terminal fissures.

Other features
One stigma on ventral side of central nodule.

Literature

References are given in chronological order.

Reference
Citation
Kützing F.T. 1849. Species Algarum. Lipsiae. F.A. Brockhaus. 922 pp. Morphology; Description
Van Heurck H. 1880. Synopsis des Diatomées de Belgique. Atlas. Ducaju & Cie., Anvers.; 1-30 pls Taxonomy; Illustrations; Morphology
Van Heurck, H. 1885. Synopsis des Diatomées de Belgique. Texte. Martin Brouwers & Co., Anvers. 235 pp. Morphology
Patrick R.M., Reimer C.W. 1975. The Diatoms of the United States Exclusive of Alaska and Hawaii. Volume 2. Part 2. Entomoneidaceae, Cymbellaceae, Gomphonemaceae, Epithemiaceae. Monographs of the Academy of Natural Sciences of Philadelphia. 13: 213 pp.; 28 pls. Morphology; Ecology; Illustrations
Ko-Bayashi T., Fukushima H., Ohtsuka H. 1986. Taxonomical studies on pennate diatom Cymbella tumida (Bréb.) van Heurck (1) (2) (3) (4). Japanese Journal of Water Treatment Biology. 22: 13-18, 19-24, 25-30, 31-37. Morphology; Illustrations
Suzuki S. 1995. Auxospore formation of Cymbella tumida (Brébisson) Van Heurck. Diatom. 11: 85-87. Morphology; Biology
Silva-Benavides A. M. 1996. The epilithic diatom flora of a pristine and a polluted river in Costa Rica, Central America. Diatom Research. 11(1): 105-142. Morphology; Ecology; Illustrations
Krammer K. 2002. Cymbella. Lange-Bertalot H. (ed), Diatoms of Europe, Diatoms of the European Inland Waters and Comparable Habitats, Vol.3, A.R.G. Gantner Verlag K.G., Ruggell. 584 pp Morphology; Illustrations;
Kermarrec L., Ector L., Bouchez A., Rimet F., Hoffmann L. 2011. A preliminary phylogenetic analysis of the Cymbellales based on 18S rDNA gene sequencing. Diatom Research. 26(3): 305-315. Morphology; Biology; Illustrations
Lee J.H. 2011. Algal Flora of Korea Vol. 3, No. 4. National Institute of Biological Resources, Seo-gu Incheon. 70 pp Morphology; Ecology; Illustrations
Ector L., Wetzel C.E., Novais M.H., Guillard D. 2015. Atlas des diatomées des rivières des Pays de la Loire et de la Bretagne. DREAL Pays de la Loire, Nantes. 649 pp Morphology; Illustrations;
Solak C.N., Kaleli A., Baytut Ö. 2016. The distribution of cymbelloid diatoms in Yalova running waters. Turkish Journal of Fisheries and Aquatic Sciences. 16: 953-959. Morphology; Illustrations
Lange-Bertalot H., Hofmann G., Werum M., Cantonati M. 2017. Freshwater Benthic Diatoms of Central Europe: Over 800 Common Species Used in Ecological Assessment. Cantonati M., Kelly M.G., Lange-Bertalot H. (eds.), Koeltz Botanical Books, Schmitten-Oberreifenberg, Germany. 942 pp Morphology; Ecology; Illustrations
Reichardt E. 2018. Die Diatomeen im Gebiet der Stadt Treuchtlingen. Bayerische Botanische Gesellschaft Vol. 1,2. 1184 pp Morphology; Illustrations
Genkal S.I., Shcherbak V.I., Semenyuk N.Ye. 2020. Morphological variability of some species of the genus Cymbella (Bacillariophyta) from reservoirs of the Dnieper Cascade (Ukraine). International Journal of Algae. 22: 129-136. Morphology; Illustrations
Le Cohu R., Lange-Bertalot H., Van de Vijver B., Tudesque L. 2020. Analysis and critical evaluation of structural features in four Cymbellaceae taxa from New Caledonia. Fottea. 20: 75-85. Morphology; Illustrations
This page should be cited as:

Jüttner I., Wetzel C.E., Ector L. Cymbella tumida (Brébisson) Van Heurck; 1880; pl.2, fig.10. 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=2820. [Accessed:  ].

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Record last modified: 06/12/2022