Taxon Account

Cymatopleura elliptica (Brébisson) W. Smith; 1851; 13

Key references

Hofmann G., Werum M., Lange-Bertalot H. 2011. Diatomeen im Süßwasser-Benthos von Mitteleuropa. A.R.G. Gantner, Ruggell. 908 pp

Jahn R., Kusber W.-H., Cocquyt C. 2017. Differentiating Iconella from Surirella (Bacillariophyceae): typifying four Ehrenberg names and a preliminary checklist of the African taxa. PhytoKeys. 82: 73-112.

Morphology

Shape
Valves elliptical with obtuse point to wide lanceolate.

Symmetry
Isopolar, bilaterally symmetrical.

Axial area
There is no axial structure, but a line is detectable, formed where opposing sets of striae meet during valve development.

Raphe
Raphe system running around the whole of the valve perimeter, raised very slightly above the valve face. The raphe system is detectable by the presence of fibulae and the edges of the subraphe canal, which can appear as a submarginal line running close to and parallel to the perimeter.

Other features
Valve face prominently undulate, homogeneously structured, containing very fine striae that bend in various directions according to their positions relative to the undulations.

Chloroplasts highly dissected plates, appearing as a network of interconnected angular or lobed segments.


SEM morphology
There can be slight irregular thickenings on the valve face, giving a speckled appearance.

Literature

References are given in chronological order.

Reference
Citation
Smith W. 1851. Notes on the Diatomaceae, with descriptions of British Species included in the genera Campylodiscus, Surirella and Cymatopleura. Annals and Magazine of Natural History, 2nd series, Vol. 7. 1-14; 3 pls. Morphology; Description; Illustrations
Hartley B., Barber H.G., Carter J.R., Sims P.A. 1996. An Atlas of British Diatoms. Bristol,. Biopress Limited. 601 pp; 290
Hofmann G., Werum M., Lange-Bertalot H. 2011. Diatomeen im Süßwasser-Benthos von Mitteleuropa. A.R.G. Gantner, Ruggell. 908 pp Morphology; Ecology; Illustrations;
Jahn R., Kusber W.-H., Cocquyt C. 2017. Differentiating Iconella from Surirella (Bacillariophyceae): typifying four Ehrenberg names and a preliminary checklist of the African taxa. PhytoKeys. 82: 73-112. Morphology; Taxonomy; Type Illustration;
This page should be cited as:

Mann D. G. Cymatopleura elliptica (Brébisson) W. Smith; 1851; 13. 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=3960. [Accessed:  ].

Image Gallery

Record last modified: 27/12/2020